Page 1 CF910 SERVICE MANUAL 1154-7990-11...
Page 2: Table Of Contents
CONTENTS GENERAL 1. SAFETY INFORMATION ................... G-1 2. SPECIFICATIONS .....................G-6 3. PRECAUTIONS FOR INSTALLATION .............. G-9 4. PRECAUTIONS FOR USE ................G-10 5. HANDLING OF THE CONSUMABLES .............. G-11 6. OTHER PRECAUTIONS ..................G-11 7. SYSTEM OPTIONS ................... G-12 8. HIGHLIGHTS ..................... G-13 MECHANICAL/ELECTRICAL 1.
Page 3 11-4. ATDC Sensor ..................M-56 11-5. AIDC Sensor ................... M-58 11-6. Black Toner Replenishing Control ............M-59 11-7. Auxiliary Toner Replenishing Mechanism ..........M-61 11-8. Toner Suction Fan Motor ................ M-62 12. TONER HOPPER SECTION ................M-63 12-1. Toner Replenishing Mechanism ............. M-64 12-2.
Page 4 (1) Paper Separation Lifting Finger ............M-101 (2) Paper Separator Corona ..............M-101 (3) Paper Separator Finger ..............M-101 (4) Paper Separating Failure Detection Mechanism ....... M-102 (5) Paper Holding Mechanism ..............M-102 (6) Paper Separation Control ..............M-103 16-5. Transfer Film Cleaning Mechanism ............M-104 16-6.
Page 5: Safety Information
The use of controls, adjustments or performance of procedures other than those specified in this manual may result in hazardous radiation exposure. Because of this, Minolta strongly recommends that you operate your copy machine only as described in this docu- mentation.
Page 6 For Europe Users: WARNING Use of controls, adjustments or performance of procedures other than those specified in this manual may result in hazardous radiation exposure. This is a semiconductor laser. The maximum power of the laser diode is 8mW and the wavelength is 780nm. For Denmark Users: ADVARSEL Usynlig laserstråling ved åbning, når sikkerhedsafbrydere er ude af funktion.
Page 7 Laser safety labels are attached on the outside of the copy machine as shown below. For Europe CLASS 1 LASER PRODUCT LASER KLASSE 1 PRODUKT For United States MINOLTA CO., LTD 2, Higashiakatsuchi, Yawata-cho, Toyokawa-shi Aichi-ken 442-8585, Japan MANUFACTURED: THIS PRODUCT COMPLIES WITH 21 CFR CHAPTER I, SUBCHAPTER J.
Page 8 Label inside copy machine The following laser safety label will be attached inside the copy machine as shown below. CAUTION- INVISIBLE LASER RADIATION WHEN OPEN AVOID EXPOSURE TO BEAM VORSICHT- UNSICHTBARE LASERSTRAHLUNG WENN ABDECKUNG GEÖFFNET NICHT DEM STRAHL AUSSETZEN VARO! AVATTAESSA OLET ALTTIINA NÅKYM TTÖM ÄLLE Å...
Page 9 ALL Areas CAUTION Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent type recommended by the manufacturer. Dispose of used batteries according to the manufacturer’s instructions. Denmark only ADVARSEL! Lithiumbatteri - Eksplosionsfare ved fejlagtig håndtering Udskiftning må...
Page 10: Specifications
1154SBG0200A SPECIFICATIONS Type Freestanding Platen Type Stationary Original Scanning Scanning in the main-scanning direction with a reduction-type color CCD (RGB 3 lines) sensor Resolution 400 dpi 400 dpi × 400 dpi Scanning Density 400 dpi × 400 dpi Print Density Copying System Electrostatic dry powdered image transfer to plain paper Paper Feeding...
Page 11 Copy Paper Type: 1st to 3rd Drawers Multi Bypass Table (automatic feeding) Plain paper (64 to 90 g/m Translucent paper — — OHP transparencies (dedicated) — — Thick paper (91 to 105 g/m — Thick paper (106 to 157 g/m A6 thick paper (for MH) —...
Page 12 Multiple Copies 1 to 99 copies (count-down system) Zoom Ratios × 1.000 Full size × 1.214, × 1.294, × 2.000 Inch Enlargement × 1.154, × 1.224, × 1.414 Fixed Metric × 0.647, × 0.733, × 0.785 Inch Reduction × 0.707, × 0.816, × 0.866 Metric ×...
Page 13: Precautions For Installation
1154SBG0300A PRECAUTIONS FOR INSTALLATION Installation Site To ensure safety and utmost performance of the copier, the copier should NOT be used in a place: • Where it will be subjected to extremely high or low temperature or humidity. • Which is exposed to direct sunlight. •...
Page 14: Precautions For Use
1154SBG0400A PRECAUTIONS FOR USE To ensure that the copier is used in an optimum condition, observe the following precau- tions. • Never place a heavy object on the copier or subject the copier to shocks. • Insert the power plug all the way into the outlet. •...
Page 15: Handling Of The Consumables
1154SBG0500A HANDLING OF THE CONSUMABLES Before using any consumables, always read the label on its container carefully. • Use the right toner. The applicable copier model name is indicated on the Toner Bottle. • Paper is apt to be easily damaged by dampness. To prevent absorption of moisture, store paper, which has been removed from its wrapper but not loaded into the Drawer, in a sealed plastic bag in a cool, dark place.
Page 16: System Options
1154SBG0700A SYSTEM OPTIONS 1138O525AA 1144O642AA 1151O007AA 1145M035AA 1144M172AB 4467U008AA 9, 10 1139O0020A 1144O184AA 1154O028AA 1144O003AB 1. Data Terminal DT-104 6. Editor Board E-2M 2. Plug-In Counter 7. Large Capacity Cassette C-101 3. Duplexing Document Feeder AFR-12 8. Duplex Unit AD-7 4.
Page 17: Highlights
1154SBG0800A HIGHLIGHTS • The CF910 Copier is a digital full-color copier positioned as the successor to CF900 and intended for 100% customer satisfaction through the “CS-color technologies” that offer enhanced image quality, greater reliability, and better operability. • It offers even more enhanced image quality than CF900 could, has a built-in controller, and is priced low to gain a competitive edge in the market for greater sales.
Page 18: Cross-Sectional View And Paper Path
1154SBM0100A CROSS-SECTIONAL VIEW AND PAPER PATH • The illustration below shows where different parts of the copier are placed and how the copy paper moves through the copier. • Each of the mechanical and electrical parts is identified and located in the relevant sec- tion that appears later in this manual.
Page 19: Copy Process
1154SBM0200A COPY PROCESS 3. Photoelectric 4. IR Image Conversion Processing 5. PH Image Processing 20. Paper Exit 19. Fusing 6. Laser Exposure 13. Paper Separation 14. Oil Cleaning 17. Cleaning Transfer Drum 15. Toner Cleaning 18. Main Erase 12. Image Transfer 1.
Page 20 1. PC Drum • An electrostatic latent image is formed on the surface of a photoconductive material that coats an aluminum cylinder. • An OPC type photoconductor is used. (For details, see p. M-16.) 2. PC Drum Charging A single-wire PC Drum Charge Corona employing the Scorotron system deposits a nega- tive DC charge across the entire surface of the PC Drum.
Page 21 11. Attraction The Static Charge Corona applies a positive DC corona emission to the Transfer Film, while the Static Charge Roller presses the paper against the surface of the Transfer Film so that the paper is attracted to the film by static charge. (For details, see p. M-92.) 12.
Page 22: Drive System
1154SBM0300A DRIVE SYSTEM • The illustration below outlines the drive system of the copier. • The directions of rotation of the motors, gears, pulleys, and belts will be found in the rel- evant section that appears later in this manual. Drive for Synchronizing Roller, Static Scanner Drive Motor Charge Roller, and Fur Brush Unit...
Page 23: Operating Sequence
1154SBM0400A OPERATING SEQUENCE Power Switch ON Paper Dehumidifying Heater 1 to 4 H4 to H7: When Paper Dehumidifying Switch S2 is ON. Power Supply Cooling Fan Motor M20 Ozone Ventilation Fan Motor M5 Toner Suction Fan Motor M4 Fusing Unit Cooling Fan Motor M14 PH Cooling Fan Motor M13 PC Drum Charge Wire Cleaning Motor M3: Cleans the PC Drum Charge Corona wire.
Page 24 γ correction (See 6-2. Image Stabilization System Control.) → Transfer Drum Reference Position Sensor 1 PC20 Transfer Film cleaning mode: (See 16-7. Toner Cleaning.) Developing Drive Motor M16 Developing bias (–DC) → Transfer Drum Reference Position Sensor 1 PC20 Approx. 0.1 sec. Auxiliary Erase Lamp UN21 Pre-Cleaning Charge Corona (AC) Approx.
Page 25 (Upper Drawer feeding, single copy, full size, mono color) Start key ON Paper Dehumidifying Heater 1 to 4 H4 to H7: When Paper Dehumidifying Switch S2 is ON. “ ” Operation when the Power Switch is turned ON Developing Drive Motor M16 Developing bias (-DC) →...
Page 26 Static Charge Roller Solenoid SL13 Backup Blade 2 Solenoid SL19 Approx. 0.2 sec. Synchronizing Roller Clutch CL21 Transport Roller Clutch CL15 Approx. 0.1 sec. Paper attraction Static Charge Corona output → Paper Leading Edge Detecting Sensor PC18 Approx. 0.1 sec. Synchronizing Roller Clutch CL21 Transport Roller Clutch CL15 Static Charge Roller Solenoid SL13...
Page 27 Approx. 0.2 sec. Pre-Cleaning Charge Corona output (-DC) Pre-Cleaning Charge Corona output (AC) Approx. 0.3 sec. Pre-Cleaning Charge Corona output (-DC) Pre-Cleaning Charge Corona output (AC) → Transfer Drum Reference Position Sensor 2 PC28 Approx. 1.4 sec. Paper Separator Finger Solenoid SL14 Lifting Finger Solenoid SL16 Paper Separator Corona output Separation...
Page 28: Control Block Diagram
1154SBM0500A CONTROL BLOCK DIAGRAM Photoelectric IR Image Converter Processing Unit A/D Converter Board (PWB-B) IR Control Board (PWB-C) Control Panel (UN27) CCD Sensor Board (PWB-A) Motor Drive Board (PWB-G) PH Image Processing Unit PH Control Board PH Control Board (Digital) (PWB-JD) (Analog) (PWB-JA) SOS Board Laser Diode (LD1)
Page 29: Image Stabilization System
1154SBM0600A IMAGE STABILIZATION SYSTEM 1154SBM0601A 6-1. Image Stabilization System Overview Purpose Means Control (Sensor) • To stabilize γ correction control • AIDC Sensor UN20 • AIDC Sensor contamination correction • Surface Potential Detec- image density • To stabilize gra- • AIDC detection tion Sensor UN22 •...
Page 30: Image Stabilization System Control
1154SBM0602A 6-2. Image Stabilization System Control Summary • The copier uses the data obtained through AIDC detection and PC Drum surface poten- tial detection to perform various operations, thereby finding the optimum γ correction exposure curve for image stabilization control. Sensitometry ID (Image Density) Reversal...
Page 31 1. AIDC Sensor UN20 Fine Adjustment • This function corrects variations in the AIDC detection level (the amount of toner attracted to the surface of the PC Drum) that occur due to a contaminated UN20. • It is carried out when the Power Switch is turned ON. Operation Flow A.
Page 32 2. AIDC Detection • Three density patterns selected through the AIDC Sensor UN20 fine adjustment are pro- duced on the surface of the PC Drum for each color (in the order of Y, M, C, and Bk) to allow UN20 to detect the amount of toner attracted to the drum surface. •...
Page 33: Pc Drum Section
1154SBM0700A PC DRUM SECTION • The photoconductive drum used in this copier is the organic photoconductor (OPC) type. • The drum consists of two distinct, light-sensitive, organic semiconductor materials on an aluminum alloy base. The outer of the two layers is called the Charge Transport Layer (CTL), while the inner layer is called the Charge Generating Layer (CGL).
Page 34: Pc Drum Drive Mechanism
1154SBM0702A 7-2. PC Drum Drive Mechanism <PC Drum Drive Mechanism> • The PC Drum is driven by PC Drum Drive Motor M18. • A flywheel mounted on the drum shaft smooths out power surges occurring due to back- lash in the gears. Flywheel Ground Plate Drum Shaft...
Page 35: Pc Drum Temperature Control
1154SBM0703A 7-3. PC Drum Temperature Control • PC Drum Heater H3 is installed inside the PC Drum to maintain drum sensitivity and pre- vent condensation from forming on the drum surface. • H3 is turned ON or OFF by a temperature-sensitive reed switch installed inside the PC Drum, keeping the drum surface temperature at 35±5°C.
Page 36: Pc Drum Charging Section
1154SBM0800A PC DRUM CHARGING SECTION • The PC Drum Charge Corona has a Scorotron grid to deposit a negative DC charge evenly across the surface of the PC Drum. • The grid voltage (VG) applied to the grid mesh is kept in the range between –400 and –1100V by the Constant-Voltage Circuit in High Voltage Unit 1 HV1.
Page 37: Pc Drum Charge Corona Wire Cleaning Mechanism
1154SBM0802A 8-2. PC Drum Charge Corona Wire Cleaning Mechanism <Mechanism> • Rotation of PC Drum Charge Wire Cleaning Motor M3 turns the screw shaft, which moves the cleaner mounted on the screw shaft to clean the corona wire. • Charge Cleaner Home Position Sensor PC16 and Charge Cleaner Return Position Sen- sor PC17 detect the point at which the direction of M3 rotation is switched from forward to backward, or vice versa, and at which M3 is stationary, thereby moving or stopping the cleaner.
Page 38: Pc Drum Charge Section Ozone Filter
1154SBM0803A 8-3. PC Drum Charge Section Ozone Filter • Ozone produced by the PC Drum Charge Corona is absorbed by the Ozone Filter from the air blown against the back of the PC Drum Charge Corona by Ozone Ventilation Fan Motor M5.
Page 39: Image Reader (Ir) Section
1154SBM0900A IMAGE READER (IR) SECTION 1154M019AC 1. DC Power Supply 2 PU2 13. Scanner Home Position Sensor PC1 2. Original Glass Cooling Fan Motor M2 14. Cable Pulley 3. Original Cover Angle Detecting Sensor 15. Cable PC22 16. IR Control Board PWB-C 4.
Page 40: Ir Image Processing
1154SBM0901A 9-1. IR Image Processing 1. Photoelectric Conversion 2. Analog-to-Digital Conversion 3. Shading Correction 4. Line-to-Line Variation Correction 6. Histogram Making 5. Zoom/Movement Processing (ACS/AE Processing) Interface 7. Image Data Editing 8. AE Processing 10. Color Correction (Reflection/Density 9. Image Area Discrimination Conversion, Masking, UCR/BP) 11.
Page 41 Photoelectric Conversion: PWB-A • A reduction-type color CCD Sensor is used. • The R, G, and B chips of the CCD Sensor read the light reflected off the original and convert the optical data into a corresponding analog electric signal. •...
Page 42 Zoom/Movement Processing: PWB-C • The image is edited according to the editing features selected on the control panel (enlargement/reduction, image moving, image repeat) • Two memories (FIFOs) are used to edit the image as required. Input Output FIFO FIFO (Write) (Read) Zoom •...
Page 43 Histogram Making: PWB-C ACS: Auto Color Selection • The scanning area is divided into 256 blocks [512 (main-scanning) × 512 (sub- scanning) dots]. • The image data of the original (excluding the edges) is sampled during the pres- can after the shading correction (at a rate of every 4 dots both in the main- and sub-scanning directions).
Page 44 AE Processing: PWB-C <Histogram Making> • The scanning area is divided into two in the feeding direction [at a point 216 mm from the trailing edge of the original (excluding the edge)]. The area is not divided if, depending on the size of the original, the division point falls within, or outside, the edge on the leading edge side of the original.
Page 45 Image Area Discrimination: PWB-C • The image areas (color edge area, black edge area, dot area, continuous grada- tion area) are discriminated to optimize edge emphasis, smoothing and other pro- cessing just right for the image. • Either LIMOS I or New Screen LIMOS is selected according to the result of this discrimination.
Page 46 10 Color Correction: PWB-C Reflection/Density Conversion • Color reproduction faithful to the original is not possible if the original reflection data (R, G, B) obtained through the CCD Sensor is converted to the complementary color data for developing. Example: White Becoming Black Reflection Factor...
Page 47 Masking Considering the spectral transmission characteristics of the R, G, and B filters of the CCD Sensor and the spectral reflection characteristics of the toner, the image data is corrected and the DR, DG, and DB data are replaced with C, M, and Y data, thereby enabling color reproduction faithful to the original.
Page 48 11 Miscellaneous Processing: PWB-C <Improved reproduction of black characters> The Bk data for black characters is replaced with MAX (DR, DG, DB) data, which improves reproduction of black fine lines, realizing reproduction of black characters that do not depend on line width very much. DR DG DB 1154M020AA Edge Emphasis...
Page 49: Ccd Sensor
1154SBM0902A 9-2. CCD Sensor • A reduction-type color CCD sensor is used. • Each of the R, G, and B CCD chips is placed in a line with a clearance of 40 µm from the adjacent chip and provided with a color filter. •...
Page 50: Exposure Components Section
1154SBM0903A 9-3. Exposure Components Section 1. Exposure Lamp LA1 • Exposure Lamp LA1 uses a DC power supply to emit an even amount of light. • It is a halogen frost lamp that works in combination with the Edge Reflectors to ensure uniform light distribution.
Page 51: Exposure Lamp Control
1154SBM0904A 9-4. Exposure Lamp Control • Exposure Lamp LA1 is turned ON and OFF by the Scan Start Timing signal (PRE-TRIG) and Image Request signal (I-REQ) from Master Board PWB-I and the Lamp ON signal (LMPON) and Sub-Scanning Area signal (VD) from IR Control Board PWB-C. Control Signal Wiring Diagram PRE-TRIG...
Page 52: Scanner And 2Nd/3Rd Mirrors Carriage Movement Mechanism
Full Color, Manual Mode, Full Size: Start Key ON 1st Scan 2nd Scan 3rd Scan 4th Scan Image Request Signal (I-REQ) 0.5sec 0.5sec 0.5sec 0.5sec 0.5sec Scan Start Timing Signal (PRE-TRIG) Lamp ON Signal (LMPON) Exposure Lamp (LA1) Sub-Scanning Area Signal (VD) A : Varies for different paper sizes and zoom ratios.
Page 53: Scanner Motor Drive Control
1154SBM0906A 9-6. Scanner Motor Drive Control Scanner Drive Motor M1, a stepping motor, is controlled by Master Board PWB-I, IR Con- trol Board PWB-C, and Motor Drive Board PWB-G. PWB-I Scan Enable Signal Transfer Drum Reference Position (SCAN-ENABLE) Detecting Signal (T-BASE) Image Request Signal (I-REQ) FC1 I-30A PWB-JD...
Page 54 <When Making Two Mono-Color Copies> Start Key ON Scan Start Timing Signal (PRE-TRIG) Lamp ON Signal (LMPON) 0.5sec 0.5sec Image Request Signal (I-REQ) Sub-Scanning Area Signal (VD) Scan Scanner Motor Stop (M1) Return 2nd Copy 1st Copy 0.5sec 1144M04TCB <Speed Control> •...
Page 55: Ir Section Cooling Fan Motor Mechanism
1154SBM0907A 9-7. IR Section Cooling Fan Motor Mechanism • Original Glass Cooling Fan Motor M2: Draws air into the copier to prevent the temperature on the surface of the Original Glass from rising due to heat from Exposure Lamp LA1. •...
Page 56: Original Size Detecting Section
1154SBM0908A 9-8. Original Size Detecting Section 1. Original Size Detecting Sensors • A multibeam sensor is used for the Original Size Detecting Sensors (SE1 to SE4). • A multibeam sensor consists of a light emitter and a photosensor. • The light emitter employs an optical device called the grating that diffracts the light emit- ted by the LED (infrared) into three beams.
Page 57 2. Original Size Detection Timing Original Cover Angle Size Reset Detecting Sensor PC2 Switch S12 HIGH Each multibeam sensor outputs (Original Cover angle: 15° or HIGH or LOW regardless of whether more) there is an original on the Original Glass. HIGH to LOW The copier latches the HIGH or LOW (when the Original Cover is...
Page 58 Inch Areas <Standard> 5-1/2” × 8-1/2” L 8-1/2” × 11” L 8-1/2” × 14” L 5-1/2” × 8-1/2” C 8-1/2” × 11” C 8-1/2” × 11” L 8-1/2” × 14” L 8-1/2” × 11” C 8-1/2” × 11” C 11” × 17” L 11”...
Page 59: Printerhead (Ph) Section
1154SBM1000A PRINTERHEAD (PH) SECTION 1154M023AA 1. Upper PH Assy 5. PH Cooling Fan Motor M13 2. PH Control Board (Analog) PWB-JA 6. Polygon Motor Drive Board (U1V19) 3. PH Control Board (Digital) PWB-JD 7. SOS Board (PWB-S) 4. Lower PH Assy <Laser Beam Path>...
Page 60: Image Processing Block Diagram
1154SBM1001A 10-1. Image Processing Block Diagram Digital image data PWB-JD FIFO Memory Master γ Correction Print Area Board Circuit Control PWB-I New Screen LIMOS Processing Circuit SOS Board PWB-S PWB-JA Max. LD1 Intensity Control D/A Converter Bias Intensity Control Adder Intensity Monitor Differential Amplifier LD1 Driver...
Page 61 Digital image data PWB-JD FIFO Memory Corrects the processing speed for the image data transmitted from IR to match with that of the PH. • γ Correction Circuit LIMOS I and New Screen LIMOS processing tables are provided for each color of C, M, Y, and Bk (thus a total of eight different types of tables).
Page 62: Laser Exposure Process
1154SBM1002A 10-2. Laser Exposure Process Press the Start Key. Laser Diode (LD1) is forced to emit light. The laser beam strikes the SOS Board via the polygon mirror, lens, and mirror, which generates an SOS signal. The SOS signal is input to PH Control Board (Digital) PWB-JD, which ensures that LD1 is turned ON at the same timing for all main scanning lines.
Page 63: Laser Emission Timing (Sos Signal
1154SBM1003A 10-3. Laser Emission Timing (SOS Signal) • The signal output from Master Board PWB-I (SOS-EXP) forces the LD1 to turn ON and the laser beam strikes the SOS Board via the Polygon Mirror, Lens, and SOS Mirror to generate an SOS signal. •...
Page 64: Laser Emission Area (Hia And Via Signals
1154SBM1004A 10-4. Laser Emission Area (HIA and VIA Signals) • The laser beam area is controlled by the main scanning direction paper width area signal (HIA), the main scanning direction valid image area signal (HIA inside) and the sub-scan- ning direction valid image area signal (VIA) generated by the Print Area Control of PH Control Board (Digital) PWB-JD.
Page 65: Limos I And New Screen Limos
1154SBM1005A 10-5. LIMOS I and New Screen LIMOS • “9. Image Area Discrimination” as part of the IR image processing functions performed by the IR discriminates the image area and, based on this discrimination, either LIMOS I or New Screen LIMOS is selected. The following outlines the control for turning ON the LD1 for LIMOS I and New Screen LIMOS.
Page 66: Developing Unit Section
1154SBM1100A DEVELOPING UNIT SECTION • The Developing Unit is located under the PC Drum. It consists of the Y developing unit, M developing unit, C developing unit, and Bk developing unit placed from right to left as viewed from the front of the copier. •...
Page 67 1154M027AA High Voltage Unit 4 HV4 Developer Supply Clutch (Y) CL19 AIDC Sensor UN20 ATDC Sensor (Y) UN35 Developing Drive Motor M16 ATDC Sensor (M) UN34 Developer Supply Clutch (Bk) CL16 10. ATDC Sensor (C) UN33 Developer Supply Clutch (C) CL17 11.
Page 68: Developing Unit Drive Mechanism
1154SBM1101A 11-1. Developing Unit Drive Mechanism <Drive Mechanism> • The Sleeve/Magnet Roller of each color of toner is driven via gears and belts by Devel- oping Drive Motor M16. • The Developer Supply Roller and Single-Shaft Circulation Screw are driven through the Developer Supply Clutch of each color of toner (CL16 to 19) by M16.
Page 69 <Control> Control Signal Energized Deenergized Wiring Diagram Developing Drive PWB-I PJ2I-3A 16-E Motor M16 Developer Supply PWB-I PJ2I-5A 16-E Clutch (Bk) CL16 Developer Supply PWB-I PJ2I-8A 16-E Clutch (C) CL17 Developer Supply PWB-I PJ2I-7A 16-E Clutch (M) CL18 Developer Supply PWB-I PJ2I-6A 16-E Clutch (Y) CL19...
Page 70: Developer Flow
1154SBM1102A 11-2. Developer Flow 1. From toner replenishment to development Toner is supplied from the Hopper. Single-Shaft Circulation Screw Inner screw As the inner screw turns, the toner, being mixed together with the developer, is fed to the rear of the copier. The developer is fed to the outer screw.
Page 71 Sleeve/Magnet Roller With its magnetic force, the roller attracts developer from the surface of the Developer Supply Roller. The roller conveys the developer through its rotation and magnetic pole positioning. The developer is attracted to the surface of the PC Drum. 1144M036AA 2.
Page 72: Developing Bias And Atdc Bias
1154SBM1103A 11-3. Developing Bias and ATDC Bias Developing Bias • A developing bias (VB) is applied to the Sleeve/Magnet Roller to maintain an adequate amount of toner attracted onto the surface of the PC Drum. • During development, AC and DC negative bias voltages are applied to the Sleeve/Mag- net Roller to help toner transfer to the PC Drum.
Page 73: Atdc Sensor
1154SBM1104A 11-4. ATDC Sensor • The optical ATDC Sensors (UN33, 34, 35) installed under the inner screw of the Single- Shaft Circulation Screw detect the toner-to-carrier ratio of the developer. • A DC negative voltage is applied to the ATDC detection surface, thereby preventing false detection due to toner sticking to the surface.
Page 74 <Toner Replenishing Control by ATDC Detection> • An ATDC detection is made while each of the Developer Supply Clutches (C, M, and Y) CL17, 18, and 19 is energized (during a copy cycle). • The number of detections made varies depending on the paper size in the feeding direc- tion as detailed below.
Page 75: Aidc Sensor
154SBM1105A 11-5. AIDC Sensor • AIDC Sensor of a reflector type converts the amount of toner attracted to the surface of the PC Drum and the PC Drum background level to corresponding voltage values which are in turn used for γ correction control of the image stabilization system. •...
Page 76: Black Toner Replenishing Control
1154SBM1106A 11-6. Black Toner Replenishing Control • The amount of toner consumed and toner-to-carrier ratio are calculated for each copy to determine the amount of toner to be replenished and to replenish toner. Calculating the amount of toner consumed and toner-to-carrier ratio •...
Page 77 Toner is replenished • The amount of toner to be replenished as determined through these processes is replenished when the Developer Supply Clutch (Bk) is energized for the next copy cycle. • Time for a single toner replenishing cycle is between 700msec and 1150msec to pre- vent the toner replenishing port from being clogged.
Page 78: Auxiliary Toner Replenishing Mechanism
1154SBM1107A 11-7. Auxiliary Toner Replenishing Mechanism • The Developing Unit of each color of toner can be set into the auxiliary toner replenishing mode when that particular developing unit is selected with “ATDC Toner Supply” of “Image Adjust” available from the Service mode and when the Start Key is then pressed. •...
Page 79: Toner Suction Fan Motor
1154SBM1108A 11-8. Toner Suction Fan Motor • Toner Suction Fan Motor M4 is used to draw toner particles from the developing unit of each color of toner into the Toner Collecting Box. Y Developing Unit Rear of Copier Duct Toner Collecting Box 1144M039AA <Control>...
Page 80: Toner Hopper Section
1154SBM1200A TONER HOPPER SECTION Toner Replenishing Motor (Bk) M9 Toner Replenishing Motor (C) M10 Toner Transport Motor (Bk) M22 Toner Replenishing Toner Transport Motor (M) M11 Motor (C, M, Y) Toner Replenishing Motor (Y) M12 1154M030AA Storage/Toner Agitator 1 Empty Detector/ Toner Agitator 2 Meter Chute...
Page 81: Toner Replenishing Mechanism
1154SBM1201A 12-1. Toner Replenishing Mechanism • Toner is replenished from the Hopper to the developing unit according to the amount of toner to be replenished as detected through ATDC detection for the C, M, and Y toner and through the black toner replenishing control for the Bk toner. Storage/Toner Agitator 1 and Empty Detector/Toner Agitator 2 •...
Page 82 Toner Metering • The Metering Roller turns to let toner drop into the Conveyor. The time over which this roller is turned determines the amount of toner to be replenished. Metering Roller 1144M045AA • The Metering Roller is turned through gears by the Toner Replenishing Motor of each color of toner (M9 to 12).
Page 83: Toner Empty Detection Control
1154SBM1202A 12-2. Toner Empty Detection Control The Toner Empty Switches (S5 to 8) are actuated two consecutive times. The Empty Detection Counter starts to count the ON times of S5 to 8. When S5 to 8 are actuated 14 times, Near Toner Empty is displayed on the control panel. 1144M187CA Turn the Power Open the Front Door, pull out the...
Page 84: Paper Take-Up/Feed Section
1154SBM1300A PAPER TAKE-UP/FEED SECTION 1154M033AA 1. Transport Roller 11. Lower Drawer Feed Roll 2. Transport Roller Sensor PC19 12. Lower Drawer Separator Roll 3. Vertical Transport Rollers 13. Lower Drawer Paper Take-Up Roll 4. Upper Drawer Paper Take-Up Sensor 14. Lower Drawer Paper Lifting Plate PC12 15.
Page 85: Universal Tray Paper Size Detection Mechanism
1154SBM1301A 13-1. Universal Tray Paper Size Detection Mechanism • The width (crosswise direction) and length (feeding direction) of the paper are indepen- dently detected and the copier determines the paper size by combining the two separate detections made. • Reed switches, built into CD Size Detection Unit UN26 and FD Size Detection Unit UN25, are actuated and deactuated by the magnets placed as illustrated below.
Page 86 <UN29 Inch> Universal Sensors Universal Sensors Size Size × × × × × × × × Invoice L Legal L × × × × × × Invoice L Invoice L × × × × × × Invoice L Invoice L ×...
Page 87: Drawer-In-Position Detection Mechanism
1154SBM1302A 13-2. Drawer-in-Position Detection Mechanism • The copier detects that a particular drawer is slid into, or out of, the copier as follows. The light blocking plate in the rear of each drawer blocks Upper/Middle/Lower Drawer Set Sensor PC3/4/5. Light Blocking Plate PC3/4/5 1154M034AA Rear of Copier...
Page 88: Drawer Paper Lifting/Lowering Mechanism
1154SBM1303A 13-3. Drawer Paper Lifting/Lowering Mechanism • The stack of paper loaded in each drawer is raised or lowered by the segment gear which is driven by Upper/Middle/Lower Drawer Lift-Up Motor M6/7/8. • The paper stack lifting motion follows the numerical order of A through E below. Paper Lifting Arm M6/7/8 PC3/4/5...
Page 89 When the Drawer is Slid in The Paper Lifting Arm raises the paper stack. PC9/10/11 The paper stack pushes the Paper Take-Up Roll upward. Upper/Middle/Lower Drawer Lift-Up Sensor PC9/10/11 is blocked (L). M6/7/8 is deenergized and the paper stack 4425M005AA lifting motion is completed.
Page 90: Paper Empty Detection Mechanism
1154SBM1304A 13-4. Paper Empty Detection Mechanism • A paper-empty condition in each drawer is detected by Upper/Middle/Lower Drawer Paper Empty Sensor 1 PC6/7/8 and the Paper Empty Lever. Rear of Copier Paper Lifting Plate PC6/7/8 Front of Copier Paper Empty Lever 1138M365AA <When Paper is Loaded>...
Page 91: Paper Take-Up Mechanism
1154SBM1305A 13-5. Paper Take-Up Mechanism • The Paper Take-Up Roll, Feed Roll, and Separator Roll of each drawer are driven via Transport Roller Clutch CL15 and Upper/Middle/Lower Drawer Paper Take-Up Clutch CL11/12/13 by Paper Take-Up Motor M15. Separator Roll Feed Roll CL11 Paper Take-Up Roll CL15...
Page 92: Paper Separating Mechanism
1154SBM130501A (1) Paper Separating Mechanism • A torque limiter is used for paper separation. • Using the friction coefficient between the Feed Roll and Separator Roll, the Separator Roll is stopped so that only the 1st sheet of paper is taken up and fed into the copier. <Normal Feeding>...
Page 93: Paper Take-Up Roll Retracting Mechanism
1154SBM130503A (3) Paper Take-Up Roll Retracting Mechanism • The Paper Take-Up Roll is designed to retract while the drawer is being slid into or out of the copier to prevent the paper from contacting the Paper Take-Up Roll during that time. •...
Page 94: Paper Dehumidifying Heaters And Humidity Sensor
1154SBM1306A 13-6. Paper Dehumidifying Heaters and Humidity Sensor <Paper Dehumidifying Heaters> • Paper Dehumidifying Heaters 1 to 4 H4 to H7 are provided to prevent damp paper from adversely affecting the copy image. • Each of these heaters is a 30W heater. Paper Dehumidifying Switch S2 Actuated Deactuated...
Page 95: Vertical Transport Drive Mechanism
1154SBM1307A 13-7. Vertical Transport Drive Mechanism • The Transport Rollers and Vertical Transport Rollers are driven via Transport Roller Clutch CL15 by Paper Take-Up Motor M15. Transport Rollers 1st Vertical Transport Rollers CL15 2nd Vertical Transport Rollers 3rd Vertical Transport Rollers 1154M039AA M-78...
Page 96: Paper Take-Up Control
1154SBM1308A 13-8. Paper Take-Up Control Control Signal Energized Deenergized Wiring Diagram Paper Take-Up Motor PWB-I PJ6I-1 13-D Transport Roller Clutch PWB-I PJ6I-8 13-D CL15 Upper Drawer Paper PWB-K PJ6K-5A Take-Up Clutch CL11 Middle Drawer Paper PWB-K PJ6K-7A Take-Up Clutch CL12 Lower Drawer Paper PWB-K PJ6K-2B Take-Up Clutch CL13...
Page 97 <Upper Drawer high-speed feeding> Start key ON PC20 Approx. 0.2 sec. CL15 Approx. 0.1 sec. CL11 Approx. 0.6 sec. PC12 1154T27MCA <Two-sheet attraction> Start key ON Transfer Drum Reference Position Sensor 1 (PC20) Transfer Drum Reference Position Sensor 2 (PC28) Paper Take-Up Motor Approx.
Page 98: Manual Feed Table Section
1154SBM1400A MANUAL FEED TABLE SECTION 1154SBM1401A 14-1. Manual Feed Paper Take-Up Mechanism • The Manual Bypass Take-Up Roll, Feed Roll, and Separator Roll are driven via Transport Roller Clutch CL15 and Manual Feed Paper Take-Up Clutch CL14 by Paper Take-Up Motor M15.
Page 99: Manual Feed Take-Up Control
1154SBM1402A 14-2. Manual Feed Take-Up Control Control Signal Energized Deenergized Wiring Diagram Paper Take-Up Motor PWB-I PJ6I-1 13-D Transport Roller Clutch PWB-I PJ6I-8 13-D CL15 Manual Feed Paper PWB-K PJ7K-1 Take-Up Clutch CL14 Control Signal DOWN Wiring Diagram Manual Feed Paper PWB-K PJ7K-3 Pick-Up Solenoid PWB-K PJ7K-5...
Page 100: Manual Take-Up Roll Pressure Mechanism
1154SBM1403A 14-3. Manual Take-Up Roll Pressure Mechanism • The Manual Bypass Take-Up Roll is in the raised (standby) position at all times except when it takes up a sheet of paper from the Multi Bypass Table. When the Start Key is pressed, Manual Feed Paper Pick-Up Solenoid SL20 is operated to press the Manual Bypass Take-Up Roll against the paper, enabling it to take up a sheet of paper.
Page 101: Manual Feed Paper Separating Mechanism
1154SBM1404A 14-4. Manual Feed Paper Separating Mechanism • A torque limiter is used for paper separation. • Using the friction coefficient between the Manual Bypass Feed Roll and Manual Bypass Separator Roll, the Manual Bypass Separator Roll is stopped so that only the 1st sheet of paper is taken up and fed into the copier.
Page 102: Manual Feed Paper Empty Detection Mechanism
1154SBM1405A 14-5. Manual Feed Paper Empty Detection Mechanism • Manual Feed Paper Empty Sensor PC15 detects a sheet of paper on the Multi Bypass Table. PC15 Manual Bypass Take-Up Roll Actuator 1144M057AA When Paper is Present When No Paper is Present Actuator Paper PC15: Blocked...
Page 103: Manual Feed Paper Width Detection Mechanism
1154SBM1406A 14-6. Manual Feed Paper Width Detection Mechanism • Manual Feed Paper Size Detecting Sensor UN24 is built into the Multi Bypass Table. The output voltage from UN24 is varied as the Edge Guides on the Multi Bypass Table are moved. The copier knows the width of the paper placed on the Multi Bypass Table according to the output from UN24.
Page 104: Manual Feed Paper Length Detection Mechanism
1154SBM1407A 14-7. Manual Feed Paper Length Detection Mechanism • The length of the paper placed on the Multi Bypass Table is detected by Transport Roller Sensor PC19 which is blocked (L) and unblocked (H) and Synchronizing Roller Clutch CL21 which is energized while the paper is being taken up and fed in. •...
Page 105: Synchronizing Rollers Section
1154SBM1500A SYNCHRONIZING ROLLERS SECTION • The Synchronizing Rollers synchronize the leading edge of the copy paper accurately with the leading edge of the toner image on the PC Drum. • There are three rollers installed so that the paper tends to curl along the shape of the Transfer Drum.
Page 106: Synchronizing Roller Drive Control
1154SBM1502A 15-2. Synchronizing Roller Drive Control Control Signal Energized Deenergized Wiring Diagram Paper Take-up PWB-I PJ6I-1 13-D Motor M15 Transport Roller PWB-I PJ6I-8 13-D Clutch CL15 Synchronizing PWB-I PJ5I-10A 14-D Roller Clutch CL21 Control Signal Blocked Unblocked Wiring Diagram Paper Leading Edge Detecting PWB-I PJ5I-1B 14-E...
Page 107: Transfer Drum Section
1154SBM1600A TRANSFER DRUM SECTION 1154M042AE 1. Paper Holding Solenoid SL23 19. Backup Blade 2 2. Paper Separator Corona 20. Backup Blade 2 Solenoid SL19 3. Lifting Finger 21. Charge Neutralizing Corona 4. Lifting Finger Solenoid SL16 22. Synchronizing Rollers 5. Paper Separator Finger Solenoid SL14 23.
Page 108: Transfer Drum Drive Mechanism
1154SBM1601A 16-1. Transfer Drum Drive Mechanism • The Transfer Drum is driven by PC Drum Drive Motor M18. • Use of the same drive as the PC Drum means that the toner image can be transferred to the paper on the Transfer Drum with correct registration. Flywheel PC Drum Transfer Drum...
Page 109: Paper Attraction
1154SBM1602A 16-2. Paper Attraction Paper is fed by the Synchronizing Rollers. Paper Attracting Operation A. Backup Blade 2 pushes the Transfer Film. Backup Blade 2 Solenoid SL19 B. The Static Charge Corona deposits a positive High Voltage Unit 3 HV3 charge from the inside of the Transfer Drum.
Page 110: Static Charge Roller
1154SBM160201A (1) Static Charge Roller • The Static Charge Roller is driven by the Transfer Drum. • The Static Charge Roller is pressed against, and released from, the surface of the Trans- fer Drum via Static Charge Roller Solenoid SL13 by Paper Take-Up Motor M15. SL13 Static Charge Roller 1144M068AA...
Page 111: Backup Blade 2
1154SBM160202A (2) Backup Blade 2 • When Backup Blade 2 Solenoid is energized ( A ), Backup Blade 2 pushes the Transfer Film from the inside of the Transfer Drum. SL19 Backup Blade 2 Transfer Film 1144M071AA 1154SBM160203A (3) Static Charge Corona •...
Page 112: Paper Attraction Detection (Before Image Transfer
1154SBM160205A (5) Paper Attraction Detection (before image transfer) • Paper Attraction Detection Board 1 PWB-O detects that a sheet of paper has been attracted properly onto the Transfer Film. • PWB-O illuminates the paper fed and, according to the timing at which the reflected light is detected, determines the type of paper (standard or PPC paper, OHP transparencies).
Page 113: Image Transfer Section
1154SBM1603A 16-3. Image Transfer Section Paper attracted to the Transfer Film passes by the PC Drum as the Transfer Drum turns. Image Transfer Operation A. Backup Blade 1 pushes the Transfer Film. Backup Blade 1 Solenoid SL18 B. The Image Transfer Corona applies a positive High Voltage Unit 3 HV3 corona emission from the inside of the Transfer Film.
Page 114: Image Transfer Corona
1154SBM160301A (1) Backup Blade 1 • In addition to pushing the Transfer Film from the inside of the Transfer Drum, Backup Blade 1 restricts the electric field generated by the Image Transfer Corona output, thereby narrowing the field so that toner is attracted to the exact point on the paper. •...
Page 115: Charge Neutralizing Cloth
1154SBM160302A (2) Image Transfer Corona • The Image Transfer Corona, employing the corotron system, applies a DC positive corona emission to the inside of the Transfer Film to attract the negatively charged toner on the surface of the PC Drum onto the surface of the paper. •...
Page 116: Image Transfer Control
1154SBM160305A (5) Image Transfer Control Control Signal Energized/ON Deenergized/OFF Wiring Diagram Backup Blade 1 PWB-I PJ4I-8B 15-E Solenoid SL18 High Voltage PWB-I PJ4I-7A 15-D Unit 3 HV3 <One-sheet attraction> Transfer Drum Reference Position Sensor 1 (PC20) Approx. 1.8 sec. SL18 Approx.
Page 117: Paper Separation Section
1154SBM1604A 16-4. Paper Separation Section The paper to which the toner image has been transferred travels further. Paper Separating Operation A. The Lifting Finger pushes up the Transfer Film. Lifting Finger Solenoid SL16 B. The Paper Separator Corona applies an AC High Voltage Unit 2 HV2 corona emission from the outside of the Transfer Film to weaken the attraction of the paper to the...
Page 118: Paper Separation Lifting Finger
1154SBM160401A (1) Paper Separation Lifting Finger • The Lifting Finger pushes up the Transfer Film from the inside of the Transfer Drum when Lifting Finger Solenoid SL16 is energized. Paper Paper Separator Corona Transfer Film A : Energized Lifting Finger SL16 1144M081AA 1154SBM160402A...
Page 119: Paper Separating Failure Detection Mechanism
1154SBM160404A (4) Paper Separating Failure Detection Mechanism • Separating Failure Detecting Sensor PC21 detects that the paper has been properly sep- arated from the surface of the Transfer Film. Paper Paper Separator Finger PC21 Transfer Drum 1144M083AA 1154SBM160405A (5) Paper Holding Mechanism •...
Page 120: Paper Separation Control
1154SBM160406A (6) Paper Separation Control Control Signal Wiring Diagram Paper Separator Finger PWB-I PJ5I-2B 14-E Solenoid SL14 Lifting Finger Solenoid SL16 PWB-I PJ4I-6B 15-E High Voltage Unit 2 HV2 PWB-I PJ5I-5A 14-D Paper Holding Solenoid SL23 PWB-I PJ7I-9A 13-F Control Signal Blocked Unblocked Wiring Diagram Transfer Drum Reference...
Page 121: Transfer Film Cleaning Mechanism
1154SBM1605A 16-5. Transfer Film Cleaning Mechanism • The Transfer Film cleaning mechanism removes toner and fusing oil from, and neutral- izes any residual charge on, the surface of the Transfer Film. • Transfer Film cleaning can occur in any of the following three patterns. Cleaning Mode Means •...
Page 122 <Operation Flow> The paper separating operation is completed. The Transfer Film is again charged positively by the Static Charge Corona, Static Charge Roller, and Backup Blade 2 so that flying toner particles are attracted to the Transfer Film. (During predrive and at the end of 1-sided copy (At the end of 2-sided or manual bypass copy cycle) cycle)
Page 123: Oil Cleaning Backup Brush
1154SBM160601A (1) Oil Cleaning Backup Brush • When Backup Brush Solenoid SL17 is energized, the Backup Brush is pressed against the Transfer Film from the inside to push it outward. SL17 Energized SL17 Backup Brush Backup Brush 1144M121AA 1144M089AA 1154SBM160602A (2) Oil Roller •...
Page 124: Oil Cleaning Control
SL22 A : Energized Transfer Film B : Deenergized Ratchet Pawl Ratchet Oil Collecting Roller Pawl 1144M087AA 1154SBM160603A (3) Oil Cleaning Control Control Signal Energized Deenergized Wiring Diagram Backup Brush PWB-I PJ4I-9B 15-E Solenoid SL17 Oil Roller Sole- PWB-I PJ5I-4B 14-E noid SL22 Transfer Drum Reference...
Page 125: Toner Cleaning
1154SBM1607A 16-7. Toner Cleaning • The toner particles on the Transfer Film are collected by the Fur Brush Unit. Toner Cleaning Operation A. The Backup Brush is pressed against the Trans- Internal Fur Brush Solenoid SL15 fer Film from the inside of the Transfer Drum. B.
Page 126: Toner Cleaning Backup Brush
1154SBM160701A (1) Toner Cleaning Backup Brush • The Backup Brush is pressed against, and pushes, the Transfer Film from the inside of the Transfer Drum when Internal Fur Brush Solenoid SL15 is energized. Transfer Film SL15 Energized SL15 1154M009AA Backup Brush Backup Brush 1144M086AA 1154SBM160702A...
Page 127: Fur Brush Roller/Toner Collecting Roller
1154SBM160703A (3) Fur Brush Roller/Toner Collecting Roller • When Fur Brush Pressure Solenoid SL11 is energized, it turns the cams raising the flat springs under the Fur Brush Unit. This results in the Fur Brush Roller being pressed against the Transfer Film. Fur Brush Roller Flat Spring SL11...
Page 128: Fur Brush Control
• A bias voltage of DC+300V is applied to the Fur Brush Roller so that it collects toner par- ticles from the surface of the Transfer Film. • The Toner Collecting Roller, to which a bias of DC+900V is applied, collects toner from the surface of the Fur Brush Roller.
Page 129: Charge Neutralizing
1154SBM1608A 16-8. Charge Neutralizing • The Charge Neutralizing Corona employing a corotron system neutralizes any residual charge on the inner and outer surfaces of the Transfer Film. • The corona output is varied according to the temperature and humidity inside the copier and the type of paper being used.
Page 130: Transfer Drum Retraction Mechanism
1154SBM1609A 16-9. Transfer Drum Retraction Mechanism • The Transfer Drum is retracted in times other than during image formation to prevent it from being contaminated with oil or AIDC pattern. • The drive for retracting the Transfer Drum is given via Transfer Drum Retract Solenoid SL12 by Paper Take-Up Motor M15.
Page 131: Pc Drum Cleaning Section
1154SBM1700A PC DRUM CLEANING SECTION 1154SBM1701A 17-1. Pre-Cleaning Charge Corona • The Pre-Cleaning Charge Corona employs a corotron system to deposit either an AC or DC negative corona emission, selected as necessary, to the surface of the PC Drum to neutralize any residual charge on it.
Page 132: Pc Drum Cleaning
1154SBM1702A 17-2. PC Drum Cleaning <Cleaning Operation> 1. The Cleaning Blade is pressed against the sur- face of the PC Drum to scrape toner off it. 2. The Paddle flips toner accumulated on the edge of the Cleaning Blade to the Toner Conveying Coil.
Page 133: Ozone Exhaust From Pre-Cleaning Charge Corona And Transfer Drum
1154SBM1703A 17-3. Ozone Exhaust from Pre-Cleaning Charge Corona and Transfer Drum • Ozone produced by the Pre-Cleaning Charge Corona and inside the Transfer Drum is absorbed from the air being drawn out of the copier by Fusing Unit Cooling Fan Motor M14 by the Ozone Filter located beside M14.
Page 134: Main Erase Section
1154SBM1800A MAIN ERASE SECTION • Main Erase Lamp LA2 consists of a number of incandescent tungsten-filament lamps connected in series inside a glass tube. It neutralizes any surface potential remaining on the surface of the PC Drum after cleaning. Main Erase Lamp LA2 PC Drum Charge Corona PC Drum 1144M103AA...
Page 135: Fusing Unit Section
1154SBM1900A FUSING UNIT SECTION 1154M043AA 1. Charge Neutralizing Brush 13. Oil Pump Tube 2. Paper Exit Switch S10 14. Collecting Pipe 3. Paper Separator Fingers 15. Lower Fusing Roller Thermostat TS2 4. Upper Fusing Roller 16. Lower Fusing Roller Thermistor TH2 5.
Page 136: Fusing Unit Drive Mechanism
1154SBM1901A 19-1. Fusing Unit Drive Mechanism 1154SBM190101A (1) Upper Fusing Roller • The roller is constructed so that it does not swell due to silicone oil that has seeped into it, which is a major cause of paper wrinkles and a deteriorating roller. •...
Page 137: Fusing Rollers Drive Mechanism
1154SBM190103A (3) Fusing Rollers Drive Mechanism • The Upper and Lower Fusing Rollers are driven by Fusing Motor M17. • The Lower Fusing Roller is turned a little slower than the upper one, which ensures that oil is collected properly from the Upper Fusing Roller. •...
Page 138: Fusing Rollers Drive Control
1154SBM190104A (4) Fusing Rollers Drive Control Control Signal Energized Deenergized Wiring Diagram Fusing Motor PWB-I PJ6I-4 13-C End of Transfer Drum Before Transfer Start key Cleaning Control of Last Color Transfer Drum Reference Position Sensor 1 PC20 1154T38MCA 1154SBM190105A (5) Fusing Speed Switching Control •...
Page 139: Fusing Roller Pressure Mechanism
1154SBM1902A 19-2. Fusing Roller Pressure Mechanism • To ensure that there is a certain width of area of contact between the Upper and Lower Fusing Rollers, compression springs are installed at the front and rear ends of the Lower Fusing Roller. •...
Page 140: Fusing Temperature Control
1154SBM1903A 19-3. Fusing Temperature Control • Fusing temperature is controlled by the following components. Part Name Symbol Function • Turns ON during the warming-up cycle; it turns OFF, how- Upper Fusing Roller Heater ever, while AIDC and Vi are being detected during the image Lamp stabilization sequence and during shading correction.
Page 141 • In the standby state following warm-up TH1: H1 is turned ON and OFF according to the temperature detected at 20-sec. intervals. TH2: H2 is turned On and OFF according to the temperature detected at 30-sec. intervals. • During a copy cycle TH1, TH2: H1 and H2 are turned ON and OFF according to the temperature detected at 5- sec.
Page 142: Fusing Oil Application/Collection Mechanism
1154SBM1904A 19-4. Fusing Oil Application/Collection Mechanism A. The cam presses and relaxes the Oil Pump Tube to pump up the Fusing Motor M17 oil in the Oil Tank to the Oil Reservoir. B. The bank of the Oil Reservoir limits the amount of oil in the reser- voir.
Page 143: Fusing Oil Application Drive Mechanism
1154SBM190401A (1) Fusing Oil Application Drive Mechanism • Drive from Fusing Motor M17 moves the cam that presses and relaxes the Oil Pump Tube. It also turns the Oil Pick-Up Roller, Oil Supply Roller, and Oil Application Roller. Upper Fusing Roller Oil Pump Tube 1154M015AD Upper Fusing Roller...
Page 144: Exit Unit Section
1154SBM2000A EXIT UNIT SECTION Drive Mechanism • Drive from Fusing Motor M17 turns the Paper Exit Roller to feed the paper out of the copier. Paper Exit Roller 1144M114AA Paper Exit Detection • Paper Exit Switch S10 detects a sheet of paper that is fed out of the copier. •...
Page 145: Horizontal Transport Unit Section
1154SBM2100A HORIZONTAL TRANSPORT UNIT SEC- TION • In the 2-sided copy mode the Horizontal Transport Rollers transport the paper fed from Duplex Unit AD-7 to the Synchronizing Rollers. Drive Mechanism • The Horizontal Transport Rollers are turned via Horizontal Transport Drive Clutch CL23 by Paper Take-Up Motor M15.
Page 146 Horizontal Transport Roller PC24 Paper is fed from AD-7. Paper CL23 CL25 1154M016AA <PC24: Blocked> AD-7 PC24 PC24 Paper 1144M119AA Horizontal Transport Horizontal Rollers Transport Rollers Synchronizing <PC24: Unblocked> Rollers PC24 1144M118AA 1144M120AA M-129...
Page 147 <Control> Control Signal Energized Deenergized Wiring Diagram Horizontal Transport PWB-K PJ2K-2 Clutch CL23 Control Signal Blocked Unblocked Wiring Diagram Horizontal Transport PWB-K PJ2K-4 Sensor PC24 M-130...
Page 148: Power Supply
1154SBM2200A POWER SUPPLY 1154SBM2201A 22-1. Power Lines When the Power Cord is Plugged in Power cord plugged in Power supply voltage Noise Filter FLT1 Power supply Power supply voltage voltage Power Switch S1 OFF Paper Dehumidifying Switch S2: ON Power supply voltage DC Power Supply 1 PU1: ON Paper Dehumidifying Heaters 1 to 4 H4 to H7: ON...
Page 149: Power Lines When The Power Switch Is Turned On
1154SBM2002A 22-2. Power Lines When the Power Switch is Turned ON S1 : ON Power supply DC24V4 voltage DC±12V1 Main Switch Detect- DC24V3 ing Relay RY4: ON DC Power Supply 1 PU1 DC24V1 DC24V4 Power Supply Board A/D Converter Master Board PWB-I PWB-L Board PWB-B Option Relay Remote...
Page 150: Power Supplies On/Off Control
1154SBM2203A 22-3. Power Supplies ON/OFF Control DC Power Supply 1 PU1 DC5V DC5V DC5V DC±12V DC±12V DC24V DC24V DC24V DC24V Power cord × × × × × × plugged in Power Switch S1 ON × × Door open Malfunction × ×...
Page 151: Memory Backup
1154SBM2300A MEMORY BACKUP • The counter value and other settings made in the Service and User modes are stored in IC72 (RAM) on IR Control Board PWB-C. • IC72 (RAM) has a built-in backup battery. NOTE When replacing PWB-C, care must be taken not to replace IC72 (RAM) together with the board.
Page 152 Safety Precautions for Inspection and Service When performing inspection and service procedures, observe the following precautions to prevent accidents and ensure utmost safety. Different markings are used to denote specific meanings as detailed below. Indicates a potentially hazardous situation which, if not avoided, WARNING could result in death or serious injury.
Page 153 4. Handle the power cord with care and never use a multiple socket. • Do not brake, crush or otherwise damage the power cord. Placing a heavy object on the power cord, or pulling or bending it may damage it, resulting in a possible fire or electric shock.
Page 154 CAUTION 1. Precautions for Service Jobs • A toothed washer and spring washer, if used originally, must be reinstalled. Omitting them may result in contact failure which could cause an electric shock or fire. • When reassembling parts, make sure that the correct screws (size, type) are used in the correct places.
Page 155 5. Precautions for Laser Beam (Products Employing Laser Only) • Removing the cover marked with the following caution label could lead to possi- ble exposure to the laser beam, resulting in eye damage or blindness. Be sure to unplug the power cord before removing this cover. •...
Page 156 Other Precautions • To reassemble the product, reverse the order of disassembly unless otherwise specified. • While the product is energized, do not unplug or plug connectors into the circuit boards or harnesses. • The magnet roller generates a strong magnetic field. Do not bring it near a watch, floppy disk, magnetic card, or CRT tube.
Page 157 Used Batteries Precautions (ALL Areas) CAUTION Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent type recommended by the manufacturer. Dispose of used batteries according to the manufacturer’s instructions. (Germany only) VORSICHT! Explosinsgefahr bei unsachgemäßen austausch der batterie. Ersatz nur durch denselben oder einen vom hersteller empfohlenen ähnlichen typ.
Page 158 CONTENTS 1. SERVICE INSTRUCTIONS ................D-1 1-1. IDENTIFICATION OF FUSES AND CIRCUIT BREAKERS ....D-1 1-2. PRECAUTIONS FOR HANDLING THE LASER EQUIPMENT ....D-1 1-3. INSTRUCTIONS FOR HANDLING THE PWBs WITH MOS ICs ..... D-2 1-4. HANDLING OF THE PC DRUM .............. D-2 1-5.
Page 159 Cleaning of the Ds Rolls, Toner Scattering Prevention Seal 1 and Toner Scattering Prevention Plate ...........D-44 Replacement of the Toner Collecting Box, Air Filter, and Ozone Filter ................D-44 Removal of the Bk Developing Unit ..........D-45 Removal of the Y, M, and C Developing Units ........ D-46 Disassembly of the Developing Unit ..........
Page 160 (11) Cleaning and Replacement of the Static Charge Corona Assy ..D-88 (12) Cleaning and Replacement of the Image Transfer Corona Assy ..D-89 (13) Replacement of the Transfer Film ...........D-90 (14) Installing the Transfer Film .............. D-91 (15) Replacement of the Backup Blade 1 and Backup Blade 2 ....D-94 (16) Replacement of the Static Charge Roller Scraper ......
Page 161 Adjustment of the Gap Between the Doctor Blade and Sleeve Roller ................... D-140 Adjustment of the Amount of Transfer Drum Retraction ....D-141 Adjustment of the Paper Separator Finger Roll Position ....D-142 Adjustment of Clearance Between the Transfer Drum Joint and Paper Separator Guide ..............
Page 162: Service Instructions
SERVICE INSTRUCTIONS 1-1. IDENTIFICATION OF FUSES AND CIRCUIT BREAKERS DC Power Supply 2 (PU2) 125V 6.3A Power Supply Board (PWB-L) 250V 3.15A (4pcs.) DC Power Supply 1154D219AA 1 (PU1) 125V 10A Circuit Breaker (CB1) 15A (CB2) 20A (200V Areas) 1-2. PRECAUTIONS FOR HANDLING THE LASER EQUIPMENT •...
Page 163: Instructions For Handling The Pwbs With Mos Ics
1-3. INSTRUCTIONS FOR HANDLING THE PWBs WITH MOS ICs The following precautions must be observed when handling P.W. Boards with MOS (Metal Oxide Semiconductor) ICs. During Transportation/Storage: • During transportation or when in storage, new P.W. Boards must not be indiscriminately removed from their protective conductive bags.
Page 164 If, however, the surface is contaminated with fingerprints, clean it using the following proce- dure. 1. Place the PC Drum into one half of its container. 1076D001 2. Gently wipe the residual toner off the surface of the PC Drum with a dry, dust-free cotton pad. •...
Page 165: Parts Which Must Not Be Touched
1-5. PARTS WHICH MUST NOT BE TOUCHED (1) Red Painted Screws Purpose of Application of Red Paint Red painted screws show that the assembly or unit secured can only be adjusted or set at the factory and shall not be readjusted, set, or removed in the field. Note that when two or more screws are used on the part in question, only one representa- tive screw may be marked with red paint.
Page 166: Disassembly/Reassembly
DISASSEMBLY/REASSEMBLY 2-1. DOORS, COVERS, AND EXTERIOR PARTS: IDENTIFICATION AND REMOVAL PROCEDURES 1154D117AC 1154D118AC...
Page 167 Name Removal Procedure Remove No. 5. → Open and then remove the Front Front Door Door. Open Original Cover. → Open No. 1. → Remove No. 4, Control Panel Unit 13. → Remove No. 12. → Remove two magnet catches. → Remove two screws that secure the Con- trol Panel Unit.
Page 168: Removal Of Circuit Boards And Other Electrical Components
2-2. REMOVAL OF CIRCUIT BOARDS AND OTHER ELECTRICAL COMPONENTS • When removing a circuit board or other electrical component, refer to “PRECAUTIONS FOR HANDLING THE PWBs” contained in SWITCHES ON PWBs and follow the corre- sponding removal procedures. • The removal procedures given in the following omit the removal of connectors and screws securing the circuit-board support or circuit board.
Page 169 Symbol Name Removal Procedure Remove No. 13,12. → Remove the CCD Assy Cover. → PWB-A CCD Sensor Board PWB-A. Note: Remove with CCD Assy. Remove No. 5. → Remove the Shield Cover C,D. → PWB-B A/D Converter Board Remove the IR Board Assy. → Remove the Shield Cover B.→PWB-B.
Page 170: Removal Of Units
2-3. REMOVAL OF UNITS • This copier provides maintainability of each mechanical unit to shorten downtime at the user’s premises. • Note that replacement of a unit may call for readjustments or resetting of particular items. Paper Take-Up Unit Toner Hopper Unit Multi Bypass Unit PC Unit Transfer Unit...
Page 171: Removal Of The Pc Unit
(2) Removal of the PC Unit Remove the PC Unit after the Toner Hopper Unit has been removed, the Transfer Unit lever has been unlocked and the Transfer Unit Cover Assy has been removed. 1. Developing Unit Cover 2. Slide out and then push down the Developing Unit Pressure Lever.
Page 172 Note: When mounting the PC Unit: • Try to keep the PC Unit in the horizontal position. • When turning the PC Unit upside down (at installation), turn it counterclockwise as illus- trated below. Turning it clockwise could spill spent toner. If spent toner is spilled, wipe the surface clean of toner.
Page 173: Removal Of The Developing Unit
(3) Removal of the Developing Unit Remove the Developing Unit after the Toner Hopper Unit has been removed. 1. Developing Unit Cover 2. Slide out and then push down the Developing Unit Pressure Lever. 1144D008AB 4. Remove the Developing Unit. Fig.
Page 174: Removal Of The Fusing Unit And Transfer Unit
(4) Removal of the Fusing Unit and Transfer Unit Note: When lifting out the Fusing Unit, hold it upright to prevent spilling the oil. 2. Fusing Unit Fig. 1 1. Transfer Unit Cover Assy 3. Transfer Unit 1144D011AE Fig. 1 Unplugging the Connectors 1144D012AA D-13...
Page 175: Removal Of The Multi Bypass Unit
(5) Removal of the Multi Bypass Unit 2. Connector Fig. 1 3. Multi Bypass Unit 1. Swing open. 1144D014AC Fig. 1 Unplugging the Connector 1144D013AA D-14...
Page 176: Removal Of The Paper Take-Up Unit
(6) Removal of the Paper Take-Up Unit Remove the Paper Take-Up Unit after the Multi Bypass Unit has been removed. 2. Paper Take-Up Board Connectors Fig. 1 3. Slide out the Drawers and Transfer Unit. 1. Mounting Bracket 4. Paper Take-Up Unit 1154D123AB Fig.
Page 177: Removal Of The Ir Board Assy
(7) Removal of the IR Board Assy NOTE: When securing the IR Board Assy, try to push it down at the place indicated by the arrow during the procedure. See NOTE. 2. Shield Cover C Fig. 1 3. IR Board Assy Fig.
Page 178: Removal Of The Print Head Upper And Lower Assy
(8) Removal of the Print Head Upper and Lower Assy DANGER You must conform to these procedures or you are endangering your eyes by exposure by class lllb laser radiation. WARNING Whenever servicing the Print Head Upper Assy, Print Head Lower Assy or Optical Cover, make sure that the power cord has been unplugged from the outlet.
Page 179: Removal Of The Ph Control Board (Digital/Analog) Assy
(9) Removal of the PH Control Board (Digital/Analog) Assy Note: The Print Head Upper Assy, Print Head Lower Assy, PH Control Board (Digital/Analog) Assy and Polygon Motor Drive Board must be replaced as one set. Remove the PH Control Board (Digital/Analog) after the IR Board Assy and Print Head Upper and Lower Assy have been removed.
Page 180: Paper Take-Up Section
2-4. PAPER TAKE-UP SECTION (1) Cleaning and Replacement of the Paper Take-Up Roll, Feed Roll, Separator Roll, and Paper Dust Remover 5. Paper Take-Up Clutch Fig. 4 Paper Dust Remover Clean/replace. Note: Align the edge with the guide plate end Loosen set face at replacement.
Page 181 Separator Roll Assy Fig. 1 Replace/clean. Guide Plate Pressure Spring 1154D131AC Fig. 2 Torsion Spring Torsion Spring installed position Fig. 2 Torsion Spring Feed Roll Actuator Replace/clean. Bushing Actuator Bushing 1144D071AA Torsion Spring Paper Take-Up Roll Replace/clean. 1144D070AC D-20...
Page 182: Removal Of The Synchronizing/Static Charge Roller Assy
(2) Removal of the Synchronizing/Static Charge Roller Assy 1. Transfer Cover Assy 2. Synchronizing/Static Charge Roller Assy Fig. 1 1144D079AC Fig. 1 See below at installation. Transfer Front Side Plate Assy Install the bushing. Transfer Rear Side Plate Assy Fig. 2 Note: Place the Static Charge Roller lever under the cam.
Page 183: Disassembly Of The Synchronizing Roller Assy
(3) Disassembly of the Synchronizing Roller Assy Synchronizing Roller Clutch 3. Guide Plate Fig. 1 4. Guide Fig. 2 Harness Guide Fig. 3 1. Synchronizing Roller Assy 2. Static Charge Roller Assy 5. Upper Synchronizing Roller Fig. 1 Guide Plate installed position Clean.
Page 184 6. Lower Synchronizing Rollers Clean. Milled end Fig. 5 1144D087AC Fig. 5 Installed positions of bushing and compression Spring Protrusion in Bushing Compression Spring Protrusion in rear side plate Roller motion check Note: The roller should be returned to its original position by the spring tension when pressed in the direction of the arrow.
Page 185: Removal Of The Drawer Lift-Up Motor Assy
(4) Removal of the Drawer Lift-Up Motor Assy Remove the Drawer Lift-Up Motor Assy after each drawer has been removed. Upper Drawer Lift-Up Motor Assy Middle Drawer Lift-Up Motor Assy Lower Drawer Lift-Up Motor Assy 1144D180AA (5) Disassembly of the Multi Bypass Unit 1.
Page 186 5. Manual Feed Paper Pick-Up Solenoid Assy Fig. 3 3. Loosen the screws. Move in the direction of the arrow. 4. Multi Bypass Table Fig. 1, 2 1154D136AC Fig. 1 Multi Bypass Table Assy installed position Note: The pivot (rear) should be moved in the direc- tion of the arrow and secured.
Page 187 6. Tension Spring 9. Manual Feed Paper Take-Up Clutch Fig. 4 7. Loosen the set screw. 8. Mounting Bracket Assy 1154D138AD Fig. 4 Manual Feed Paper Take-Up Clutch installed position 0.2 mm to 1.0 mm Note: Slide the mounting bracket Assy in the direction of the arrow for play and, ensur- ing a clearance of 0.2 mm...
Page 188 11. Paper Take-Up Roll Assy Fig. 5 10. Separator Guide Assy 1154D139AE Fig. 5 Torsion Spring installed position Note: Hook the torsion spring onto the guide plate (upper). Guide Plate (upper) 1144D179AA D-27...
Page 189: Fusing Unit
2-5. FUSING UNIT (1) Replacement of the Bushings (Upper and Lower) and the Upper and Lower Fus- ing Rollers 3. Upper Fusing Roller Heater Lamp Fig. 1 Fixing Bracket Harness wiring Lamp wires 2. Rear Face Cover Thermistor wires Fig. 1 Wire Color White ↔...
Page 190 9. Top Cover 11. Upper Frame Assy 10. Pump Assy (Rear of Copier) 8. Swing open the Paper Separator Fingers Assy. 1154D223AC D-29...
Page 191 Bearing Upper Fusing Roller Bushing ×2 Fig. 4 Replace. Fig. 3 Short milled surface (Rear of Copier) 13. Upper Fusing Roller Replace 12. Holding Plate ×2 (Front of Copier) 1144D029AD Fig. 3 Fig. 4 The bushing for the front side is not the Bearing installed positions same as that for the rear side.
Page 192 Lower Fusing Roller Bushing ×2 Replace. 15. Fusing Entrance Guide Fig. 5 Note 14. Harness Cover 16. Lower Fusing Roller Replace. Bearing Fig. 6 (Front of Copier) (Rear of Copier) Paper Separator Fingers × 10 Clean. 1154D224AE NOTE: When mounting the Fusing Entrance Guide, make sure that the guide is in complete alignment with the positioning plates, having no clearance from, or overlap with, the positioning plates.
Page 193: Replacement Of The Oil Application Roller, Oil Supply Roller, And Oil Regulating Blade
(2) Replacement of the Oil Application Roller, Oil Supply Roller, and Oil Regulating Blade Fig. 1 Harness wiring Lamp wires Thermistor wires 2. Rear Face Cover Wire Color White ↔ White Fig. 1 1. Loosen the Fusing Unit Pressure Adjusting Screws.
Page 194 8. Oil Application Assy 7. Bushing Fig. 3 6. Spring ×2 Fig. 2 1144D037AC Fig. 2 Tension Spring installed position Fig. 3 Bushing (both front and rear) Hook the springs to Where the tension spring is installed, Pass the longer hook through the rectangular Turn bushing as hole and hook it in the round hole from the shown and remove.
Page 195 D-cut face 9. Round Shaft 10. Tension Spring ×2 Fig. 4 Gear Fig. 5 Note 1: Do not turn the gear in the direction of arrow. 1154D140AB Fig. 4 Tension Spring installed position 1154D141AB Fig. 5 Gear installed position Insert the pin into the round shaft. Then, mount the gear and secure it in position with the E-ring.
Page 196 D-cut face 11. Oil Application Roller Replace. (Rear side plate) 1144D043AB Note 2: Front Side Plate Assy Handle with care not to damage the blade edge. 14. Oil Regulating Blade Assy 12. Oil Supply Roller Replace. 13. Oil Pick-Up Roller 1154D142AB D-35...
Page 197: Adding The Fusing Oil
Note 6 Note 3: Face the blade as shown. 15. Holding Plate Never mind about the front and back sides of the blade. 16. Oil Regulating Blade Clean/replace. Note 3, 4 1144D045AA Support plate Note 4: At reinstallation, visually check that: •...
Page 198: Replacement Of The Cleaning Roller
(4) Replacement of the Cleaning Roller 1. Top Cover 1154D143AC 2. Cleaning Roller Assy 3. Mounting Bracket Note 4. Cleaning Roller Replace. Note: The tension spring should be fit into the U-groove in the bushing (both for the front and rear). Bushing ×2 1144D035AC Note...
Page 199: Replacement Of The Oil Collecting Blade And Oil Filter
(5) Replacement of the Oil Collecting Blade and Oil Filter (Rear of Copier) 1154D144AA 1. Left Side Face Cover 2. Oil Collecting Blade Assy Note Fig. 1 Note: The frame should be caught by the tab of the cover (at two places).
Page 200 Fig. 2 Disassembly/reassembly of the Oil Collecting Blade Assy Oil Collecting Blade ×2 Clean/replace. Retaining Plate Holding Plate Note 1154D146AA Note : At installation, ensure that the face of the blade marked with "WORKING EDGE" is on the Fusing Roller side. Make also sure that the blade is properly on the dowels. 4.
Page 201: Cleaning Of The Fusing Entrance Guide, Upper And Lower Fusing Roller Thermistors, And Upper And Lower Fusing Roller Thermostats
(6) Cleaning of the Fusing Entrance Guide, Upper and Lower Fusing Roller Thermistors, and Upper and Lower Fusing Roller Thermostats 1. Top Cover 3. Upper Fusing Roller Thermostat Assy Clean. Note 1 2. Upper Fusing Roller Thermistor Assy Clean. 4. Lower Fusing Roller Thermistor Assy Clean.
Page 202: Disassembly Of The Oil Pump Assy
(7) Disassembly of the Oil Pump Assy 1. Top Cover 2. Oil Pump Assy Note (Front of Copier) 1154D149AA Note: Be careful about oil spillage when the tube is removed from the oil tank. D-41...
Page 203 Clamp ×2 Pump Assy Fig. 1, 2 Longer part Longer part Lower Tube Holder ×2 Holder Holding Plate 1154D292AA Fig. 1 Pump installed position and angle (see below) Note 1: The tube should be aligned with the centerline of the clamp fixing screws as checked visually. Note 2: The tube ends should protrude a uniform...
Page 204 Fig. 2 At Replacement of Tube 1. Insert the syringe into the lower tube and draw about 5ml of oil from it. 1155U105AA 2. Attach the rubber tube from the accessories box to the syringe. 1155U106AA 3. Attach the tube to the lower end of the pump and inject the 5ml of oil into it.
Page 205: Developing Unit
2-6. DEVELOPING UNIT (1) Replacement of the ATDC Sensor Note: Note After replacing the ATDC Sensor window, check that the window makes full cotact with the terminal by testing for conductance using a volt-ohm meter. (See the 2. ATDC Sensor Window illustration.) Replace.
Page 206: Removal Of The Bk Developing Unit
(4) Removal of the Bk Developing Unit 2. Carrier Retrieving Assy Fig. 1 4. Bk Developing Unit Fig. 2 Fig. 3 1. Drive Cover 3. Fixing Bracket 1154D150AB Fig. 1 Fig. 2 Removal of Bk Developing Unit connector 1144D146AA Fig. 3 1154D151AD AIDC Sensor Clean.
Page 207: Removal Of The Y, M, And C Developing Units
(5) Removal of the Y, M, and C Developing Units 4. M Developing Unit 5. C Developing Unit Fig. 3 Fig. 3 3. Y Developing Unit Fig. 3 1. Drive Cover 2. Fixing Bracket 1154D152AC Fig. 3 Removal of connectors 1154D153AC D-46...
Page 208: Disassembly Of The Developing Unit
(6) Disassembly of the Developing Unit 5. Lid Assy 4. Toner Scattering Prevention Plate Assy Washer Shoulder Screw 6. Blade Assy 1. Mounting Bracket Assy 3. Seal ×2 Fig. 1 2. Duct Assy 1154D154AA Fig. 1 Seal affixing specifications (Front) (Rear) Seal ×2 1144D151AA...
Page 209 7. Remove the Developing Unit Drive Mechanism (rear). Bearing Developing Clutch Fig. 2 1154D155AB Fig. 2 Clutch installed position Developing Clutch Lock Note: 1144D153AA The clutch lock should be fitted to the mini-saddle mount on the drive side plate. D-48...
Page 210 8. Remove the drive for the Sleeve/Magnet Roller and Developer Supply Roller. Seal Fig. 3 Holding plate Collar Ds Roll (rear) (Yellow) 1154D156AB Fig. 3 Seal (rear) affixing specifications Seal 1154D157AA D-49...
Page 211 9. Remove the parts (at the front) that secure the Sleeve/Magnet Roller. Note 1: Remove the supply port with the Bk and C Devel- oping Units. Seal Fig. 6 Compression Spring Bushing Fig. 5 Bushing Holder Assy Ds Roll (front) 1144D156AB (White) Bias Terminal...
Page 212 10. Remove the Sleeve/Magnet Roller and Developer Supply Roller. Note 2 Developer Supply Roller Sleeve/Magnet Roller Bearing 1154D158AA Compression Spring Fig. 7 Fig. 7 Compression Spring installed position Note 2: Notice the black paint applied to the C, M, and Bk Developing Units and red paint applied to the Y Developing Unit.
Page 213 11. Remove the Drive (in the rear). Screw Assy Bushing (rear) Fig. 8 Replace 1144D162AB Fig. 8 Bushing installation precaution Mount the bushing onto the screw shaft while turning it slightly in the direction of the arrows. Bushing 1144D163AA D-52...
Page 214 12. Remove the Screw Assy. Screw Assy Note 4 Fixing Pipe Fig. 9 ATDC Sensor Assy Fig. 3 Note 3: Do not touch the ATDC Sensor window by hand. Note 4: 1154D160AB When replacing the ATDC sensor Assy, check for conductance between the Screw Assy terminal Screw Assy Bushing (front) and shaft.
Page 215 13. Remove the outer Screw. Outer Screw ×6 Fig. 10 O-Ring ×3 1144D166AA Fig. 10 Outer Screw installed position Outer Screw Flange (rear) Outer Screw Flange (front) 1154D161AA Note: The projection in the outer screw should be fit into the indentation in the flange (front/rear). D-54...
Page 216 14. Remove the inner screw. Flange (front) Assy Fig. 11 Pin (thin) Inner Screw Pin (thick) Flange (rear) 1144D168AA Flange (front) Fig. 11 Removal of Terminal Terminal installed position Flange (front) Terminal Terminal 1154D162AB Note: The claws (at six places) of the terminal should be fit into the channels in the flange (front).
Page 217: Cleaning Along The Left Edge Of The Developing Units
(7) Cleaning Along the Left Edge of the Developing Units Developing Units Left Edge ( Y, M, C, Bk ) Clean 1144D095YA PC Drum Developing Units 1144D345YA D-56...
Page 218: Toner Hopper
2-7. TONER HOPPER (1) Cleaning of the Shutters Toner Hopper Unit Shutters Clean. Fig. 1 1154D163AC Fig. 1 Cleaning of the shutters Shutters Clean. Open the shutter. 1144D182AB D-57...
Page 219: Disassembly Of The Toner Hopper Unit
(2) Disassembly of the Toner Hopper Unit 1. Hopper Cover Assy 2. Cover 1154D164AC Note 1: Use care not to deform this part. D-58...
Page 220 4. Tension Plate Assy 3. Tension Spring 6. Timing Belt 5. Timing Pulley 7. Timing Pulley 1154D165AD D-59...
Page 221 8. Remove the gears. Gear ×4 Fig. 1 Gear Fig. 2 1154D166AD Fig. 1 Gear installed position Fig. 2 Gear installed position Boss end Boss end Bushing 1144D193AA 1144D185AA Note: Before mounting the bushing and gear on the round shaft, check that the bushing on the opposite end is not out of position.
Page 222 Note 2 Note 2 9. Conveying Pipe Assy Fig. 3, 4 10. Color Toner Transport Motor Assy 1154D167AE Note 2: The Conveying Pipe Assy should be installed between the ground plate and Toner Hopper Unit. 1154D168AC D-61...
Page 223 Fig. 3 Connector positions 1154D169AB Fig. 4 Removal of the Toner Replenishing Motors Toner Replenishing Motor (M) Toner Replenishing Motor (Y) Toner Replenishing Motor (C) 1154D281AA D-62...
Page 224 Note 3 11. Bk Motor Assy 1154D170AB Note 3: The Bk Motor Assy should be installed between the ground plate and Toner Hopper Unit. 1154D171AC D-63...
Page 225 13. Round Shaft Assy 12. Toner Transport Fig. 5 Motor (K) Assy 14. Toner Replenishing Motor (K) Assy 1144D191AA Fig. 5 Round Shaft Assy mounting position To Mounting Bracket 1144D192AA D-64...
Page 226: Parts Around The Pc Unit
2-8. PARTS AROUND THE PC UNIT (1) Removal of the PC Drum Charge Corona Assy and Pre-Cleaning Charge Corona Assy 2. Pre-Cleaning Charge Corona Assy 1. PC Drum Charge Corona Assy 1154D172AB (2) Cleaning and Replacement of the Pre-Cleaning Charge Corona 2.
Page 227: Cleaning And Replacement Of The Pc Drum Charge Corona Assy
(3) Cleaning and Replacement of the PC Drum Charge Corona Assy 4. PC Drum Charge Corona Wire Assy. Clean/replace. 3. Rear Cover Fig. 1 Note: Wipe the grid mesh in the direction of the mesh. 1. Grid Mesh Replace. Note 9.
Page 228: Replacement Of The Ozone Filter (Pc Drum Charge Corona) And Cleaning Of The Main Erase Lamp
(4) Replacement of the Ozone Filter (PC Drum Charge Corona) and Cleaning of the Main Erase Lamp 3. Remove the PC Unit. 2. PC Front Frame Assy Fig. 1 Note 5. Ozone Filter (PC Drum Charge Corona) Replace. Fig. 2 7.
Page 229: Disassembly Of The Pc Unit
(5) Disassembly of the PC Unit 4. PC Drum Heater Control 2. PC Drum 5. Cleaning Blade Replace. Board Assy/PC Drum Heater Replace. Note 1 Note 1 9. Toner Anti- spill Seal 3. Front Flange Clean. Clean/replace. 8. Guide Plate 1.
Page 230 Note 2: When mounting the PC Unit: • Try to keep the PC Unit in the horizontal position. • When turning the PC Unit upside down (at installation), turn it counterclockwise as illus- trated below. Turning it clockwise could spill spent toner. If spent toner is spilled, wipe the surface clean of toner.
Page 231: Cleaning Of Toner Scattering Prevention Seal 2 And The Surface Potential Detection Sensor
(6) Cleaning of Toner Scattering Prevention Seal 2 and the Surface Potential Detec- tion Sensor After removing the PC Unit, clean Toner Scattering Prevention Seal 2 and the Surface Potential Detection Sensor. Toner Scattering Surface Potential Prevention Seal 2 Detection Sensor Clean.
Page 232: Disassembly Of The Pc Shaft Ground Plate
Disassembly of the PC Shaft Ground Plate 3. Pipe 2. Flywheel 1. Mounting Bracket 4. PC Shaft Ground Plate 1154D178AD Note Note: Pull out the plate with care not to drop it inside the cover plate. (8) Cleaning of the Auxiliary Erase Lamp Carrier Retrieving Assy Auxiliary Erase Lamp Clean.
Page 233: Optical Section
2-9. OPTICAL SECTION (1) Cleaning of the Original Glass Original Glass Clean. Original Glass Clean. 1144D121AA (2) Cleaning of the 1st to 3rd Mirrors, Slide Rails, and Lens Filter 1st Mirror Clean. Slide Rail ×4 Clean. Lens Filter Clean. 3rd Mirror Clean.
Page 234: Disassembly Of The Optical Section
(3) Disassembly of the Optical Section 2. CCD Assy Cover 1. Scanner 6. CCD Assy Fig. 1 5. Unplug the CCD Assy connectors. ×3 4. Shield Cover C Fig. 2 1154D244AB 3. Shield Cover D Fig. 1 Scanner harness installed position Fig.
Page 235: Disassembly Of The Scanner
(4) Disassembly of the Scanner Fig. 1 Connector orientation Fig. 3 Exposure Lamp installation direction Shorter Marking MINOLTA Longer 1144D126AA Front Rear 1144D128AA Fig. 2 Exposure Lamp installed position Lamp protruding navel orientation 90° Navel Note: Navel should be located within the 90°...
Page 236: Removal Of Cables
(5) Removal of Cables 3. Control Panel 2. Cover 4. Panel Mounting Bracket 1. Cover 5. Mounting Bracket 1154D181AA 7. DC Power 8. Master Board Supply 2 Mounting Bracket Mounting Fig. 1 Bracket 6. Cover Mounting Bracket 1154D236AC D-75...
Page 237 Fig. 1 Connectors on PWB Mounting Bracket 1154D237AB 9. Motor Drive Board 10. Cooling Fan Assy Mounting Bracket Fig. 1 1154D238AB Fig. 1 Connectors on PWB Mounting Bracket 1154D239AC D-76...
Page 238 12. ADF Mounting Bracket Assy 15. Timing Belt 13. Tension Spring 14. Scanner Drive Motor Assy 11. Mounting Bracket ×2 Fig. 2 1154D240AB Fig. 2 Scanner Drive Motor Assy installation 1. Timing Belt 3. Temporarily secure the Scanner Drive Motor Assy. 5.
Page 239 18. Cable Holding Jig ×2 23. Cable Pulley 19. Pulley Shaft Note 16. Scanner (Rear) (Front) 22. Collar 21. Cable Pulley 17. Scanner Fixing 20. Cable Tension Spring ×2 Bracket ×2 1144D136AA Note: Make sure there is no play in the shaft when securing the cable pulleys. D-78...
Page 240: Winding Of Cables
(6) Winding of Cables 2nd/3rd Mirrors Carriage Assy Cable pulley ×2 Fig. 1, 2 Cable Tension Spring 1144D137AA Fig. 1 Winding of the cable Fig. 2 Wide the cable 5 times clockwise from Scanner Drive Cable Holding Jig position side A, and 3 times counterclockwise from side B.
Page 241: Image Transfer Unit
2-10. IMAGE TRANSFER UNIT (1) Replacement of the Ozone Filter Ozone Filter (Image Transfer, Fusing Replace. 1154D182AC (2) Removal of the Paper Separator Charge Corona Assy Fig. 1 Outer Charge Neutralizing Corona installed position Corona Unit Rail 1154D183AB Note: 1154184AB Part A should be in the rectangular hole in the corona unit rail.
Page 242: Cleaning Of The Paper Separator Finger, Transfer Drum Ring, And Separating Failure Detecting Sensor
(3) Cleaning of the Paper Separator Finger, Transfer Drum Ring, and Separating Failure Detecting Sensor Separating Failure Transfer Drum Ring ×2 Detecting Sensor Clean. Clean Paper Separator Finger 1154D185AC Clean. (4) Disassembly of the Transfer Unit 4. Oil Collecting Roller Fig.
Page 243 Fig. 1 Connectors on the HV board Paper Separator Charge Neutralizing (Inner) Charge Neutralizing (Outer) Fur Brush (red) Fur Brush (white) 1154D188AB Fig. 2 Flat spring in ratchet tooth Note: Flat spring The flat spring should fit into one of the ratchet teeth.
Page 244: Cleaning And Replacement Of The Paper Separator Corona Assy
(5) Cleaning and Replacement of the Paper Separator Corona Assy Paper Separator Corona Wire Paper Separator Corona Assy Replace/Clean. Paper Separator Corona Housing 1154D189AB (6) Replacement of the Scraper Blade, Fur Brush Roller and Fur Brush Pressure Spring 4. Fur Brush Roller D-cut Replace.
Page 245 Fig. 1 Note: When reinstalling the Scraper Blade, make sure that the slot is on the left side. Mounting Bracket Scraper Blade Replace. Slot Mounting Bracket 1144D112AA Fig. 2 Terminal installed position Terminal Fur Brush Roller/Toner Collecting Roller Note: The protrusion in the terminal should fit in the indentation in the roller.
Page 246: Cleaning Of The Fur Brush Roller Assy
(7) Cleaning of the Fur Brush Roller Assy Fur Brush Roller Assy Clean. Cover 1154D191AA (8) Removal of the Corona Units 5. Image Transfer Corona Assy 4. Static Charge Corona Assy 3. Inner Charge Neutralizing Corona Assy 2. Outer Charge Neutralizing Corona Assy Fig.
Page 247: Cleaning And Replacement Of The Outer Charge Neutralizing Corona Assy
Fig. 1 Note: Outer Charge Neutralizing Corona When removing the Image Transfer installed position Corona Assy, do it while raising the lever with a screwdriver. Corona Unit Rail 1154D184AB Note: 1154D193AA Part A should be in the rectangular hole in the corona unit rail. Cleaning and Replacement of the Outer Charge Neutralizing Corona Assy Outer Charge Neutralizing...
Page 248: Cleaning And Replacement Of The Inner Charge Neutralizing Corona Assy
Cleaning and Replacement of the Inner Charge Neutralizing Corona (10) Assy Inner Charge Neutralizing Inner Charge Neutralizing Corona Assy Corona Wire Replace/Clean. Inner Charge Neutralizing Corona Housing 1154D194AA D-87...
Page 249: Cleaning And Replacement Of The Static Charge Corona Assy
Cleaning and Replacement of the Static Charge Corona Assy (11) Fig. 1 Corona Wire installed position Note: The wire should be fitted at the right position. Corona Wire Corona Wire 1144D109KY <Front> <Rear> Static Charge Corona Wire Replace/Clean. Static Charge Corona Housing Clean.
Page 250: Cleaning And Replacement Of The Image Transfer Corona Assy
(12) Cleaning and Replacement of the Image Transfer Corona Assy Fig. 1 Corona Wire installed position Note: The wire should be fitted at the right position. Corona Wire Corona Wire 1144D109KY <Front> <Rear> Image Transfer Corona Wire Replace/Clean. Image Transfer Corona Housing Clean.
Page 251: Replacement Of The Transfer Film
(13) Replacement of the Transfer Film Transfer Film Replace. 1154D229AA Note: Turning the Transfer Drum in the direction of arrow , remove the Transfer Film, starting with the side that has been peeled off in step D-90...
Page 252: Installing The Transfer Film
(14) Installing the Transfer Film 1. Fit the straight pins into the joint. 2. Peel off the backing from double-sided adhesive tape on the Transfer Film. 3. Set the Transfer Film onto the straight pins. 1154D230AB 4. Press the edge of the Transfer Film against the Drum all the way across its entire width, starting with the double-sided adhesive tape end toward double-sided adhesive tape .
Page 253 6. Turn the Transfer Drum one complete turn. Note Note 1154D232AB Note Make sure that the Transfer Film does not ride on the rubber belts at the front and rear flanges of the Transfer Drum. Rubber Belt Rubber Belt Transfer Film Should not ride.
Page 254 7. Starting with the leading edge positions of double-sided adhesive tape , press the Transfer Film against the Drum as you turn the Drum one complete turn. 1154D233AB 8. Peel off the backing from double-sided adhesive tape . Starting with the center of the Transfer Film, press the film against the drum all the way out toward both ends.
Page 255: Replacement Of The Backup Blade 1 And Backup Blade 2
(15) Replacement of the Backup Blade 1 and Backup Blade 2 Paper Attraction Detection Sensor 2 2. Transfer Film Clean. 4. Backup Blade 1 Fig. 1 Replace. Paper Attraction 1154D197AB Detection Sensor 1 3. Backup Blade 2 Clean. Fig. 1 Replace.
Page 256: Replacement Of The Static Charge Roller Scraper
(16) Replacement of the Static Charge Roller Scraper Static Charge Roller Assy Clean. Note Static Charge Roller Clean. Static Charge Roller Rubber Roll ×2 Clean. Static Charge Roller Scraper Clean/replace. Fig. 1 1154D294AA Static Charge Roller Cover Clean. Note: Remove the cover and clean the Static Charge Roller Assy.
Page 257: Cleaning The Transport Sprockets
(17) Cleaning the Transport Sprockets Fig. 1 Fusing Unit Transport Sprockets Cleaning 1154D252AB Fig. 1 Energize the solenoid. 1154D253AB D-96...
Page 258: Adjustments
ADJUSTMENTS 3-1. JIGS AND TOOLS USED (1) Tools for Setting-up and PM 1154D217AA 1144D228YA Developer Chute Jumper Harness 1144D269YA 1154D211AA Mag. Roller Shield Fusing Oil Syringe 1154D216AA 1154D209AA Developer Collecting Bag & Box Rubber Tube 1154D261AA D-97...
Page 259: Miscellaneous Jigs
(2) Miscellaneous Jigs 1144D230AA 1144D229AA Doctor Blade-Sleeve Roller Cable Holding Jigs Gap Adjusting Jigs 1144D326AA 1144D235AA Scanner/Mirrors Carriage Transfer Adjusting Jig Positioning Jigs 1144D233AA 1144D231AA AIDC Sensor Positioning Jig Interlock Switch Actuating Jig D-98...
Page 260: Adjustment Requirements For Cleaning/ Replacement Of Each Part
3-2. ADJUSTMENT REQUIREMENTS FOR CLEANING/ REPLACEMENT OF EACH PART When any of the jobs listed in the Parts List column is performed (replacement or cleaning), make the adjustments in numerical order 1, 2, ... Job Type Developing Unit Gra- Devel- AIDC AIDC ATDC...
Page 261 Job Type Machine adjust Job item IR area PRT area Gra- Top margin dation Dup. Left Left Image Lead Adjust Left- image image mag. mag. margin start edge margin position position Check Void Void Lead- Refer- image image 5 ± ence 0 ±0.5 on left/...
Page 262 Job Type Machine adjust Job item PRT area Gra- Feed Top margin Transfer dation motor Dup. sensor output Left Image Lead Adjust speed Left- adjust adjust margin start edge adjust margin position position Check Void Void Color Point at image image image reg- which...
Page 263 Job Type Machine adjust Gra- Job item Job item dation Transfer Feed motor Fuser speed Fuser NIP Adjust output adjust speed adjust adjust adjust 6 ± 3mm at Cyan No Poor or Color image Check Check image center; Excessive registration should not right-left three...
Page 264 Job Type Machine adjust Gra- dation Job item Feed motor Fuser speed Fuser NIP Adjust speed adjust adjust adjust 6 ± 0.3mm at Color image Cyan image Check registration devi- should not be center; right-left three ation within brushed or difference times.
Page 265: Adjustment Of Switches
3-3. ADJUSTMENT OF SWITCHES Adjusting Screw 1. Open the Front Door. 1144D234AA Loosen the Front Door Interlock Switch assy adjusting screw. 2. If the Front Door Interlock Switch is in the deactuated position when the Front Door is closed, move the Front Door Interlock Switch assy to the front. If the Front Door Inter- lock Switch remains actuated because it is located too far forward, move the Front Door Interlock Switch assy towards the rear.
Page 266: Adjustment Of Solenoids
3-4. ADJUSTMENT OF SOLENOIDS (1) Adjustment of Transfer Drum Retract Solenoid 4. Transfer Drum Retract Assy Fig. 1 1. Flywheel 2. Paper Take-Up Board/Power Supply Board 3. Cover Assy 1154D262AD Fig. 1 Transfer Drum Retract Solenoid Adjusting Procedure 1. Loosen the adjusting screw. 2.
Page 267: Adjustment Of Static Charge Roller Solenoid
(2) Adjustment of Static Charge Roller Solenoid 1. Transfer Drum Unit Cover Static Charge Roller Solenoid Fig. 1 2. Synchronizing/Static Charge Roller Assy 1144D079AC Fig. 1 Static Charge Roller Solenoid Adjusting Procedure 1144D197AA Static Charge Roller Solenoid Adjusting Screw 1. Loosen the adjusting screw. 2.
Page 268: Adjustment Of Paper Separator Finger Solenoid
(3) Adjustment of Paper Separator Finger Solenoid Adjusting Screw Paper Separator Finger Solenoid Assy Fig. 1 1154D259AA Fig. 1 Paper Separator Finger Solenoid Mounting Position Screw Position Paper Separator Finger Solenoid Slide the Solenoid as far as it will go in the slot in the direction of the arrow. 1154D260AA D-107...
Page 269: Adjustment Of Internal Fur Brush Solenoid, Backup Brush Solenoid, And Lifting Finger Solenoid
(4) Adjustment of Internal Fur Brush Solenoid, Backup Brush Solenoid, and Lifting Finger Solenoid Backup Brush Solenoid Adjusting Screw Fig. 1 Adjusting Screw Lifting Finger Solenoid Fig. 2 Internal Fur Brush Solenoid Fig. 1 1154D257AA Fig. 1 Internal Fur Brush Solenoid/Backup Fig.
Page 270: Adjustment Of Manual Feed Paper Pick-Up Solenoid
(5) Adjustment of Manual Feed Paper Pick-Up Solenoid Manual Feed Paper Pick-Up Solenoid Assy Fig. 1 Multi Bypass Table Assy 1154D136AB Fig. 1 Manual Feed Paper Pick-Up Solenoid Adjusting Procedure 1. Manually move the Solenoid into the energized position. 2. Loosen the adjusting screws. 1075D155AA 1075D157AB 1075D156AB...
Page 271: Adjustment Of Oil Roller Solenoid
(6) Adjustment of Oil Roller Solenoid Adjusting Screw Oil Roller Solenoid Assy Fig. 1 1154D255AA Fig. 1 Oil Roller Solenoid Adjusting Procedure Oil Roller Solenoid Rubber 1. Loosen the adjusting screws. Ring 2. Manually move the solenoid into the energized position and, where the clearance between the rubber ring of the Transfer Drum and the front and rear roll...
Page 272: Adjustment Of Belt Tension
3-5. ADJUSTMENT OF BELT TENSION A given tension is being applied to the torsion spring or tension spring fitted to the tension plate that keeps each timing belt taut. Belt tension adjustment can therefore be made by simply loosening and tightening the mounting screw(s). Driven Mechanism Adjusting Procedure Developing Unit...
Page 273 Timing Belt Locations (Viewing Copier from the Back) 1144D210AA Tensioning Direction D-112...
Page 274: Touch Panel Correction Mode
3-6. TOUCH PANEL CORRECTION MODE 1. Press the following keys in this order to set the copier into the Touch Panel mode: Stop Stop 1144S009CA 1144S010CA 1144S012CA 1144S011CA Basic Screen 2. Touch on screen 1. Note As this time, be sure to touch the very center of .
Page 275: Setting Mode
3-7. SETTING MODE (1) Accessing the Setting Mode 1. Press the User Mode key on the control panel to open the User Mode screen. Then, touch [Meter Count] to open the Meter Count screen. 2. Press the following keys in this order to set the copier into the Service mode: Stop Stop 3.
Page 276: Ohp Speed
4. Remove the A3 wide (305mm × 457mm) or 12” × 18” paper from the Multi Bypass Table and, instead, place several sheets of B5 lengthwise or 5-1/2” × 8-1/2” paper on the table. 1144D013YA 5. Select “Minimum Size” and press the Start key.
Page 277: Machine Adjust Mode
3-8. MACHINE ADJUST MODE (1) Accessing the Machine Adjust Mode 1. Press the User Mode key on the control panel to open the User Mode screen. Then, touch [Meter Count] to open the Meter Count screen. 2. Press the following keys in this order to set the copier into the Service mode: Stop Stop 3.
Page 278: Fuser Speed
6. Select “Fuser NIP” from the Machine Adjust mode menu. 7. Press the Start key. 8. Measure the width of the area of con- tact between the Upper and Lower Fusing Rollers (NIP) at the front and rear ends of the copy fed out onto the Exit Tray.
Page 279 3. Press the Start key to feed paper through the copier to determine if an adequate length of loop is formed before the Fusing Rollers. 1154D215AA 1154D212AA 1154D213AA Retarded Correct Advanced The loop length is too long A good length of loop is No loop is formed causing the causing the paper to have formed as the paper moves...
Page 280: Transfer Output
(4) Transfer Output 1. Select A3 crosswise or 11” × 17” paper. 2. From the Service Mode select “Test Print” and then select “Gradation Pat- tern.” Then, select “Belt Pattern Cyan” and press the Start key. 1154D085CA 3. Check the test print for the following. <Poor Image Transfer>...
Page 281 4. For Poor Image Transfer or Excessive Image Transfer, touch the “Ex” key twice to return to the Service Mode menu screen. 5. Select “Machine Adjust” and then “Transfer Output.” 6. Touch “Normal” and “First” (image trans- fer number), in that order, and change the setting as necessary using the shift keys ( 1154D086CA...
Page 282: Jam Sensor
(5) Jam Sensor 1. Open the Front Door, remove the Transfer Drum Unit cover, and then lock the Transfer Drum Unit back into position. 2. Install the Interlock Switch Actuating Jig. 3. Select “Jam Sensor” (from “Machine Adjust”) and press the Start key. 1144D284CA 4.
Page 283: Feed Motor Speed
(6) Feed Motor Speed Normally: The amount of color overlay deviation between C and M is uniform throughout the entire print area. Faulty: 1. The amount of color overlay deviation between C and M varies from one point to another on the image. 2.
Page 284 Criteria Deviation at Center, but not at Leading Edge. M is relatively advanced Feed Motor speed is faster. M is relatively retarded Feed Motor speed is slower. Out-of-Phase Example Leading Edge Center Criteria Too slow Too fast 1154D227AA 5. If the specifications are not met, change the setting using the shift keys ( 1154D089CB 6.
Page 285: Prt Area
(7) PRT Area 1. Top-Margin This function permits adjustments of the print start position (Image Start Position) on the paper which is not affected by the image signal sent from the IR and the point at which the paper is attracted onto the surface of the Transfer Drum (Lead Edge Position). Notes 1.
Page 286 6. If the specifications are not met, slide the Transfer Unit into the copier and close the Front Door. 7. Select “Lead Edge Position” and, using the shift keys ( ), change the set- ting. Adjustments If the setting is longer, increase the setting. If the setting is shorter, decrease the setting.
Page 287 12. If the specifications are not met, slide the Transfer Unit into the copier and close the Front Door. 13. Select “Image Start Position” and, using the shift keys ( ), change the set- ting. Adjustments If the setting is longer, decrease it. 1154D111CA If the setting is shorter, increase it.
Page 288 5. If the measurement falls outside the spec- ified range, change the setting using the shift keys ( Adjustments If the setting is longer, decrease it. If the setting is shorter, increase it. 6. Make a test copy to check again. 7.
Page 289: Ir Area
5. If the measurement falls outside the spec- ified range, change the setting using the shift keys ( Adjustments If the setting is longer, decrease it. If the setting is shorter, increase it. 6. Make a test copy to check again. 1154D094CA 7.
Page 290 4. Check the image on the test copy to see where the graduations of the scales start. 10±1 Specifications 0~1mm Top Image (leading edge of image): 10 ±1 mm Left Image (left edge of image): 0 ±1 mm 1144D240AB 5. If the specifications are not met, select “Top Image”...
Page 291 2. Access the “IR Area” screen. 3. Press the Start key to make a test copy. 1144D293CA 4. Measure the scale on the test copy. Zoom Ratio Error Specifications CD zoom ratio: 200 ±1 mm FD zoom ratio: 300 ±1.5 mm 5.
Page 292: Developer Change Mode
3-9. DEVELOPER CHANGE MODE Developer Change (Developer Discharge Developer Filling Developer Agitating) Note Although functions are available to perform Developer Discharge, Developer Filling, or Developer Agitating individually, perform “Developer Change” that covers all these in a given sequence. 1. Turn OFF the Power Switch. 2.
Page 293 8. Assemble the Developer Collecting Bag. Using two clips, secure the bag to the Devel- oping Unit (Fig. 1). 9. Remove the ATDC assy from the Developing Unit or Units to be discharged (Fig. 2). 10. Pull the Bag up over the front end and clip it with two more clips (Fig. 3). Clip ×2 Fig.
Page 294 14. Remove the supply port of the Developing Unit which is to be charged with the devel- oper and install the Developer Chute. (In the illustration, the Bk Developing Unit is selected.) 1144U054YA 1144U053AA 15. Select the color of developer and press the Start key.
Page 295 16. Pour in the developer through the Devel- oper Chute. 17. When all the developer has been poured in the Developing Unit, press the Stop key. 18. After the developer of all colors has been poured, touch “Ex.”. 1144U055YA 19. Touch “On” for the color of developer charged.
Page 296: After Dev. (C/M/Y/Bk) Has Been Changed (Atdc Sensor Adjust (Auto) Aidc Sensor Adjust (Auto) Aidc Offset Black Atdc Adjust
AFTER DEV. (C/M/Y/Bk) HAS BEEN CHANGED (ATDC Sensor Adjust (Auto) AIDC Sensor Adjust (Auto) AIDC Offset Black ATDC Adjust) Note Although functions are available to perform ATDC Sensor Adjust (Auto), AIDC Sensor Adjust (Auto), AIDC Offset, or Black ATDC Adjust individually, perform “After Dev. (C/M/Y/ Bk) has been changed”...
Page 297 9. After AIDC Sensor Adjust (Auto) has been completed, the results are displayed. If they are okay, touch “Ex.” and set the copier into the AIDC Offset mode. 10. With the AIDC Offset screen on the Touch Panel, press the Start key to let the copier start an automatic adjustment sequence.
Page 298: Gradation Adjust
3-10. GRADATION ADJUST Gradation Adjust is to be performed three times to improve correction accuracy after the copier has been set up and each time a service job has been performed. 1. Press the following keys in this order to set the copier into the Service mode: Stop Stop 2.
Page 299: Other Adjustments
3-11. OTHER ADJUSTMENTS (1) Adjustment of the AIDC Sensor Position AIDC Sensor Fig. 1 Developing Unit 1154D208AC Fig. 1 Adjusting Procedure AIDC Sensor Positioning Jig AIDC Sensor Adjusting Screws 1154D250AA 1. Loosen the AIDC Sensor adjusting screws. 2. Install the AIDC Sensor Positioning Jig. 3.
Page 300: Focus-Positioning Of The Scanner And 2Nd/3Rd Mirrors Carriage
(2) Focus-Positioning of the Scanner and 2nd/3rd Mirrors Carriage Scanner Scanner/Mirrors Carriage Positioning Positioning Jig ×2 Screw ×2 Fig. 1 1144D219AC 2nd/3rd Mirrors Carriage Fig. 1 Adjusting Procedure 1144D220AA 1. Loosen the Scanner positioning screws. 2. Install the Scanner/Mirrors Carriage Positioning Jigs. 3.
Page 301: Adjustment Of The Gap Between The Doctor Blade And Sleeve Roller
(3) Adjustment of the Gap Between the Doctor Blade and Sleeve Roller Toner Scattering Prevention Plate Doctor Blade Fig. 1 Developer Supply Roller 1144D222AA Fig. 1 Adjusting Procedure Doctor Blade <Front> Adjusting Screw <Rear> Doctor Blade-Sleeve Roller Gap Adjusting Jig ×2 Developer Supply Roller 1.
Page 302: Adjustment Of The Amount Of Transfer Drum Retraction
(4) Adjustment of the Amount of Transfer Drum Retraction Retracting Cam Paper Take- Up Motor Retracting Lever Fig. 1 1154D263AD Fig. 1 Adjusting Procedure Retracting Lever Adjusting Screw Transfer Adjusting Jig Retracting Cam 1154D264AA 1. Remove the Master Board. 2. Manually turn the Paper Take-Up Motor in the direction of the arrow until the retracting cam stops.
Page 303: Adjustment Of The Paper Separator Finger Roll Position
(5) Adjustment of the Paper Separator Finger Roll Position Roll (Front) Fig. 1 Adjusting Screws 1154D282AB Loosen the adjusting screws of the roll Fig. 1 Adjusting Procedure (front) and, after positioning the roll as Position at Which to Secure the Roll shown below, tighten the screws.
Page 304: Adjustment Of Clearance Between The Transfer Drum Joint And Paper Separator Guide
(6) Adjustment of Clearance Between the Transfer Drum Joint and Paper Separator Guide Direction of Transfer Guide Roll Drum Rotation Adjusting Screw Measurement Point Flat Surface in Joint Guide 1154D283AB Adjustment Procedure 1. Turn the Transfer Drum so that the center (flat surface) of the joint is located under the guide.
Page 305: Adjustment Of The Amount Of Projection Of Backup Blade 2 And 1
(7) Adjustment of the Amount of Projection of Backup Blade 2 and 1 Adjusting Screw Adjusting Screw Scale (Backup Blade 1) (Backup Blade 1) Scale Adjusting Screw (Backup Blade 2) Adjusting Screw 1144D264YA (Backup Blade 2) Adjusting Procedure 1. Remove the Transfer Film. 2.
Page 306: Adjustment Of The Sprocket Unit
(8) Adjustment of the Sprocket Unit Fig. 1 1154D284AA Fig. 1 Adjustment Procedure Press the scale against the position shown below and adjust the clearance between the sprocket unit and copier frame with the adjusting screw. Adjusting Screw 1154D279AA 27 0.5 mm Adjustment Instructions If the clearance between the sprocket unit and copier frame is wider than the specifica- tion, turn the adjusting screw counterclockwise.
Page 307: Miscellaneous
MISCELLANEOUS 4-1. INSTALLATION OF THE PLUG-IN COUNTER MOUNTING BRACKET (OPTION) 1. Remove the covers. 1154D242AA 2. Unplug the short- circuit connector. 1154D243AB 3. Plug in the connector of the Plug-In Counter mounting bracket. 4. Install the Plug-In Counter mounting bracket with one screw, and one screw and nut.
Page 308: Backup Memory Ram Pack Replacement Procedure
4-2. BACKUP MEMORY RAM PACK REPLACEMENT PROCEDURE Work Before Replacement 1. Select the List Output mode under the Service Mode and print the following lists: Image Processing, Setting/Adjust, and Counter. Note Check the settings of the following functions and make a note of them before the replace- ment as no lists will be printed for them.
Page 309 11. Carry out the following tasks in the Service Mode in the order given below. Note It is not possible to reenter the counter values. It is therefore necessary that the copier be maintained according to the Counter list printed before the replacement. Task Procedure Function Order...
Page 310 Task Procedure Function Order Fuser Nip Automatic adjustment Fuser Speed Automatic adjustment ∆ Check that “155°C” has been set. Set Fuser Temp. to “155°C” if set otherwise. Transfer Output Jam Sensor Automatic adjustment Feed Motor Speed Automatic adjustment PRT Area Top Margin Image Start Position Lead Edge Position...
Page 311: Flash Memory
4-3. FLASH MEMORY Software has conventionally been upgraded by replacing ROM on each board. This copier employs flash memory for the system control IC mounted on the IR Control Board. Its con- tents are reprogrammed easily by performing the following steps using the IC card (mem- ory card), into which data has been previously downloaded.
Page 312 CONTENTS 1. PRECAUTIONS FOR HANDLING THE PWBs ..........S-1 1-1. Precautions for Transportation and Storage ..........S-1 1-2. Precautions for Replacement and Inspection .......... S-1 2. CONTROL PANEL KEYS AND TOUCH PANEL ..........S-2 2-1. Control Panel Keys .................. S-2 2-2.
Page 313 9-2. Date/Time Input Mode Setting Procedure ..........S-51...
Page 314: Precautions For Handling The Pwbs
PRECAUTIONS FOR HANDLING THE PWBs 1-1. Precautions for Transportation and Storage • Before transporting or storing the PWBs, put them in protective conductive cases or bags so that they are not subjected to high temperature (they are not exposed to direct sun- light.) •...
Page 315: Control Panel Keys And Touch Panel
CONTROL PANEL KEYS AND TOUCH PANEL For more details, see the “Operator’s Manual” shipped with the copier. 2-1. Control Panel Keys 1. Touch Panel 7. Stop key • Shows various screens and messages. • Stops a copy cycle. 2. Display Contrast Control Knob Clear Key •...
Page 316 1154S028CA...
Page 317: Explanation Of The Touch Panel
2-2. Explanation of the Touch Panel (1) Basic Screen • The Basic screen is an initial screen that appears when the copier is turned ON, panel is reset, or when auto clear is activated. 1144S002EA 1. Index Keys 3. Function Keys •...
Page 318: Warning Screens
(2) Warning Screens • The warning screen may be a malfunction display, error display, warning display, or a caution display. <Malfunction Display> <Error Display> • A malfunction display is given when trou- • An error display is given when trouble ble occurs which cannot be corrected by occurs which can be corrected by the the user.
Page 319 <Image Stabilization Fault> • When the following message appears, see Image Stabilization Fault of TROUBLE- SHOOTING. • When a maintenance call indicator appears on the lower left corner of the Basic screen, touch that indicator, and the display shows numbers representing particular image stabi- lizer parts, together with the status of each of these parts.
Page 320: Function Of Switches And Variable Resistors On Pwbs
FUNCTION OF SWITCHES AND VARIABLE RESISTORS ON PWBs 3-1. PWB Location Tech. Rep. Setting Switches Board 1144S001AA 3-2. Tech. Rep. Setting Switches Board TROUBLE DON'T USE TOTAL MEMORY 1144S500AA Symbol Name Description Trouble Reset Resets malfunctions in the fusing and exposure systems. In Switch addition, it forcibly resets a misfeed or malfunction that occurrs due to incorrect operation, etc.
Page 321: User Mode
<Clearing Procedures> • Memory Clear Test Point TP2 1. Turn ON the Power Switch and close the circuit across TP1 and TP2. 2. With the circuit across TP1 and 2 closed, turn OFF the Power Switch and, approx. 10 sec. later, turn ON the Power Switch again. 3.
Page 322: User Mode Menu Screen
USER MODE • This mode is used to make various settings according to the user’s needs, check for the total counts, and designate the access number for the copy track function. 4-1. User Mode Menu Screen • Press the User Mode key on the control panel. 1154S027CA Note The “Fuser Oil Refill”...
Page 323: User Mode Functions Tree
4-3. User Mode Functions Tree Default Settings Full Color & Black Meter Count User Help Monotone Copy Track Functions Admin. Mode Gradation Adjust Input User Mode Job Memory Input Check Language Energy Saver Auto Reset User’s Choice Confirmation Beep Key Counter Intelligent Sort Custom 2 in1 ACS Judgement Level Adjust...
Page 324: Settings In The User Mode
4-4. Settings in the User Mode User Mode Key Touch Panel Display Setting (the default setting is Highlighted Default Settings Used to select the copying function settings established when the copier is turned ON or panel is reset. Current Settings Factory Settings Note To designate the “Current Settings,”...
Page 325 User Mode Key Touch Panel Display Highlighted Setting (the default setting is Fuser Oil Refill The function “Fuser Oil Refill” appears when the count of “Fus. Oil” of “Life 3 (Others)” of the “Life Counter” function available from the Ser- vice Mode reaches the preset value.
Page 326: Administrator Mode
(1) Administrator Mode Administrator Mode Touch Panel Display Highlighted Setting (the default setting is Admin. Mode Entry of the “Administrator #” opens the following screens. Note The “Administrator #” is to be set by using the Tech. Rep. mode. Copy Track Select whether to keep track of the copy data for each account (“ON”) Functions or not (“OFF”).
Page 327 Administrator Mode Touch Panel Display Highlighted Setting (the default setting is Account Copy Select whether to set a copy limit for each copy type or collectively. Limit Set Common Copy limit is set collectively. Individual Copy limit is set for each copy type. <Setting Procedure>...
Page 328: User's Choice
(2) User’s Choice User’s Choice Touch Panel Display Highlighted Setting (the default setting is Language Select the language in which the displays on the Touch Panel appear. With any language other than Japanese, the Service mode is only displayed in English. German French English...
Page 329 User’s Choice Touch Panel Display Highlighted Setting (the default setting is Custom 2 in 1 Select the default settings when 2in1 is selected, either “Select” or “Not Select” as detailed below. Select Paper: Auto Paper / A specific paper drawer Zoom: Auto Size / variable zoom / fixed zoom (inch X0.647 X0.707...
Page 330: Service Mode
SERVICE MODE • This mode is used by the Tech. Rep. to set, check, adjust, and/or record various service functions. 5-1. Service Mode Menu Screen 1154S020CA 5-2. Service Mode Setting Procedure <Setting Procedure> 1. Press the User Mode key and open the Meter Count screen. Then, press the following keys in this order.
Page 331: Service Mode Function Tree
5-3. Service Mode Function Tree Paper Size Paper Kind Admin. Mode RD-Mode Marketing Area Manual Paper Width Setting Org. Detect Sensor Serial # Input CH Cleaning OHP Speed Transfer Table Editor Screen -Inch area- 4×6 Paper Service Mode Margin Menu -Metric area- A6 Card Margin...
Page 332 Fuser Nip Fuser Speed Fuser Temp. AIDC offset Transfer Output Jam Sensor Service Mode Feed Motor Speed Machine Adjust Menu PRT Area IR Area ADF Check Paper Loop -Inch area- 4×6 Paper Passage -Metric area- A6 Card Passage Note The functions enclosed by must be accessed via the Developer Mode, not via the Service mode.
Page 333 PRT Max Density PRT Highlight Background Voltage Image ATDC Level Setting Adjust ATDC Toner Supply VB Shift AE Adjust Service Mode Menu Switch 1 (Paper) Switch 2 (Option) Switch 3 (Others) Table # Copying Status PC Dev. Status BK Toner Sup. Status State Confirm Temp.
Page 334 Life Counter Trouble Counter Service Mode Jam Counter Counter Menu Warning Counter Maintenance Counter U.S.A. areas only Image Processing Image List List Output Setting/Adjust Mode List Counter Gradation Pattern Halftone Lattice Pattern Test Print Solid Pattern Color Sample Gradation Adjust S-21...
Page 335: Settings In The Service Mode
5-4. Settings in the Service Mode (1) Setting (Installation) • This mode is used to make settings for paper size, count-up method, administrator mode, RD mode, marketing area, fuser oil change, and other items. Service Mode Menu Setting Touch Panel Display Setting (the default setting is Highlighted Paper Size...
Page 336 Setting Mode Menu RD Mode Touch Panel Display Highlighted Setting (the default setting is RD-Mode Make the initial settings of the copier for the Data Terminal. Password Entry of a 7-digit ID code enables making the following settings. When the ID code is entered and the [OK] key touched after the initial settings have been made, it executes the transmission of MAINT.
Page 337 Setting Mode Menu RD Mode Touch Panel Display Highlighted Setting (the default setting is DT setting -------------------------------------------------------- Used to perform the initial transmission from the PPC to the Center to Initial check for correct communication when the Data Terminal has been Transmission set up.
Page 338 Service Mode Menu Setting Touch Panel Display Highlighted Setting (the default setting is CH Cleaning Select whether or not to clean the PC Drum Charge Corona wire after the Power Switch has been turned ON, the Front Door has been opened and closed, and after image stabilization control following the completion of the copy cycle making the 100th copy.
Page 339 Service Mode Menu Setting Touch Panel Display Highlighted Setting (the default setting is Fuser Oil Change Select whether the fuser oil change is to be performed by the Tech. Rep. or the user. User Set Service Set Note “Service Set” → 20K Warning, 22K Machine Stop “User Set”...
Page 340: Machine Adjust (Mechanical Adjustments
(2) Machine Adjust (Mechanical Adjustments) • This mode is used to make the various mechanical adjustments to the copier. NOTE The following description only outlines the “Machine Adjust” functions. For more details, see DIS/REASSEMBLY, ADJUSTMENT and TROUBLE SHOOTING. Service Mode Menu Machine Adjust Touch Panel Display Highlighted...
Page 341 Service Mode Menu Machine Adjust Touch Panel Display Setting Jam Sensor Use this function to adjust the sensor output voltage for Paper Bond- ing Failure Detection Board 1 PWB-01 and Paper Bonding Failure Detection Board 2 PWB-02. Feed Motor Speed Use this function to vary the speed of the Paper Take-Up Motor according to the type of paper to be used.
Page 342 Service Mode Menu Machine Adjust Touch Panel Display Setting IR Area Use these functions to adjust the image area by varying the image reading start position of the IR and to adjust the zoom ratios. Note Pressing the Clear key will reset the setting made for the selected function to the default setting value.
Page 343 Service Mode Menu Machine Adjust Touch Panel Display Setting ADF Check Use these functions to make the various adjustments and check the operation of the ADF. Paper Passage & Use this function to check for paper passage in different modes of the Input Check ADF and for sensors along the paper path.
Page 344 Service Mode Menu Machine Adjust Touch Panel Display Highlighted Setting (the default setting is Paper Loop <Paper Loop Length Adjustment> Adjust the length of the loop formed in the paper before the Synchro- nizing Rollers. Shorter Longer A6 Card Passage <A6 Card Passage Adjustment> When setting “A6 Card Margin”...
Page 345: Image Adjust
(3) Image Adjust • This mode is used to adjust the various parameters for the image. NOTE The following description only outlines the “Image Adjust” functions. For more details, see DIS/REASSEMBLY, ADJUSTMENT and TROUBLE SHOOTING. Service Mode Menu Image Adjust Touch Panel Display Setting (the default setting is Highlighted...
Page 346: State Confirm (Copier Condition Check
Service Mode Menu Image Adjust Touch Panel Display Setting VB Shift This function should not be used in the field. AE Adjust Adjust the AE Reference. Less Foggy Foggier Note AE Center Red, Green, Blue functions should not be set in the field. (4) State Confirm (Copier Condition Check) •...
Page 347 Service Mode Menu State Confirm Touch Panel Display Setting Switch 2 (Option) Use this function to check the states of sensors of the options. Sorter Sorter Set Switch (S3) Duplex Duplex Unit Set Switch (S1) Pap. Through Vertical Transport Sensor (PC3) Switchback Sensor (PC1) Horizontal Transport Sensor (PC24): PPC LCT CN...
Page 348 Service Mode Menu State Confirm Touch Panel Display Setting Table # Use this function to show the output values of the developing bias and grid voltage of each Developing Unit. Vb-C Vg-C Vb-M Vg-M Vb-Y Vg-Y Vb-Bk120 Vg-Bk120 Vb-Bk160 Vg-Bk160 Copying Status Use this function to show the various parameters during a copy cycle.
Page 349 Service Mode Menu State Confirm Touch Panel Display Setting Bk Toner Sup. Sta- Use this function to show the parameters that determine the amount of black toner to be replenished. Dev.Bk Black Developing Machine Machine correction Unit counter Constant data ∆...
Page 350: Counter
(5) Counter • This mode is used to show the counts of various counters for use as a reference for ser- vice jobs. <Counter Resetting Procedure> 1. Select the function which contains the counter to be reset. 2. Select the counter to be reset and press the Clear key. Note If a wrong counter is reset, press the Stop key to undo the resetting operation and recover the cleared count.
Page 351 Service Mode Menu Counter Touch Panel Display Setting Trouble 1 Use this function to show corona-unit-related malfunction counters. (Charger) Display Description Malfunction Code PC Drum Charge Corona C0200 Charge malfunctions Image Transfer Corona C0210 Transfer malfunctions Dev. Bias Developing bias failures C0240 Trouble 2 (Motor) Use this function to show the motor-related malfunction counters.
Page 352 Service Mode Menu Counter Touch Panel Display Setting Trouble 3 (Fuser) <Trouble Counter 3> Shows the number of malfunctions that have occurred in fusing parts. - Fuser (Upper) - Display Name Malfunction Code Warm-Up Defective Upper Fusing Roller C0500 Heater Low Temp.
Page 353 Service Mode Menu Counter Touch Panel Display Setting Trouble 6 (Others) <Trouble Counter 6> Shows the number of malfunctions that have occurred in parts other than those noted above. Display Name Malfunction Code Defective SOS Sensor C3F80 C0F × × ATDC Defective ATDC Sensor Sensor...
Page 354 Service Mode Menu Counter Touch Panel Display Setting Warning 1 <Warning Counter 1> (Stabilizer) Shows the number of warnings issued as they relate to image stabili- zation control. Display PC Charge PC Drum VO Sensor AIDC Sensor Dev. C Dev. M Dev.
Page 355: List Output
(6) List Output • Produces a list of setting values, adjustment values, and counter counts of this copier. <List Output Procedure> 1. Place the required number of sheets of A4 lengthwise paper on the Multi Bypass Tray. 2. Select the desired function and press the Start key. Service Mode Menu List Output Touch Panel Display...
Page 356 - Details of List Output - <Image Processing> <Setting Adjust> Time Time Serial # Serial # ROM Version ROM Version PRT Max Density Marketing Area PRT Highlight Count Up Select Background Voltage Paper Kind Life Counter Marketing Area ATDC Level Setting OHP Speed VB Shift Fuser Oil Change...
Page 357: Test Print
(7) Test Print • This mode is used to make test prints for adjusting and checking the image. <Test Print Output Procedure> • Select the desired Test Print function and press the Start key. This causes the copier to automatically select the maximum size of paper loaded in the drawers and starts the test print.
Page 358: Security Mode
SECURITY MODE • This mode is used to set the counter and copy vender. 6-1. Security Mode Screen 1154S024CA 6-2. Security Mode Setting Procedure <Setting Procedure> 1. Show the Service Mode Menu on the Touch Panel and then press the following keys in this order.
Page 359: Security Mode Function Tree
6-3. Security Mode Function Tree Total Counter Count Up Select Size Counter Security Mode Vender Mode 6-4. Settings in the Security Mode Security Mode Menu Touch Panel Display Highlighted Setting (the default setting is Count Up Select Determine the condition by which the counter count is increased. When “Large paper 2 count”...
Page 360: Developer Change Mode
DEVELOPER CHANGE MODE • This mode is used to adjust and operate the Developing Unit. NOTE The Developer mode will only be outlined in this manual. For more details, see DIS/REAS- SEMBLY, ADJUSTMENT or TROUBLESHOOTING. 7-1. Developer Change Mode Menu Screen 1154S025CA 7-2.
Page 361: Developer Change Mode Function Tree
7-3. Developer Change Mode Function Tree Developer Developer Developer Developer Discharge Filling Agitating Change After Dev. (C/M/Y/Bk) has been ATDC changed Sensor Adjust After Dev. (Auto) Black (C/M/Y) ATDC ATDC has been Sensor AIDC Adjust changed Developer Change Mode Adjust Offset After Dev.
Page 362 Developer Change Mode Menu Touch Panel Display Setting After Dev. (C/M/Y/ Each of the following functions is used to adjust the ATDC/AIDC. Bk) has been changed ATDC Sensor Automatically adjusts the ATDC Sensors for C, M, and Y Developing Adjust (Auto) Units.
Page 363: Touch Panel Correction Mode
TOUCH PANEL CORRECTION MODE • This mode is used to correct the position of keys on the Touch Panel. 8-1. Touch Panel Correction Mode Screen 1144S009CA 1144S010CA 1144S012CA 1144S011CA Basic Screen 8-2. Touch Panel Correction Mode Setting/Correcting Procedures <Procedure> 1. Press the following keys to enter the Touch Panel Correct mode: →...
Page 364: Date/Time Input Mode
DATE/TIME INPUT MODE • This mode is used to set the time-of-day and date. 9-1. Date/Time Input Mode Screen 1154S026CA 9-2. Date/Time Input Mode Setting Procedure <Procedure> 1. Press the following keys in this order to enter the Date/Time Input mode. →...
Page 365 CONTENTS 1. INTRODUCTION .....................T-1 1-1. General Precautions ................T-1 1-2. How to Use This Book ................T-1 1-3. Reading the Text ..................T-1 1-4. Controlled Parts Check Procedure ............T-2 2. PAPER TRANSPORT FAILURE ..............T-5 2-1. Paper Misfeed ..................T-5 2-2.
Page 366 Smear on Entire Copy and Backside ..........T-63 Foggy Background ................T-65 4-Color Spots, Monocolor Spots ............T-67 Void Image ..................T-68 (10) Void, White Spots ................T-69 (11) Whole Uneven Density ..............T-71 (12) Uneven Density in the FD and CD ..........T-72 (13) Poor Color Reproduction ..............
Page 367: Introduction
INTRODUCTION 1-1. General Precautions 1. When servicing the copier with its covers removed, use utmost care to prevent your hands, clothing, and tools from being caught in revolving parts including chains and gears. When checking copier operation with the Rear Cover removed, be sure to install the jig.
Page 368: Controlled Parts Check Procedure
1-4. Controlled Parts Check Procedure This copier allows the Tech. Rep. to easily determine whether a particular controlled part is fully operational and check for copier operating conditions. (For details, see the following pages.) <Procedure> 1. When a paper misfeed or malfunction occurs, identify on the circuit diagram accompa- nying the text the controlled part that is probably responsible for the problem.
Page 369 • These are only typical screens which may be different from what are shown on each indi- vidual copier. 1154T038AA Switch 1 (Paper Passage) Switch 2 (Options) 1144T037CA 1154T040AA Sensors 3 (Others) Table No. 1154T041AA 1154T042AA Copying Status Developing Status 1144T043CA 1154T044AA...
Page 370 Black Toner Supply Status Temperature and Humidity 1154T045AA 1144T046CA CCD Check Paper Passage Check 1154T047AA 1144T049CA ROM Version 1154T050AA...
Page 371: Paper Transport Failure
PAPER TRANSPORT FAILURE 2-1. Paper Misfeed When a paper misfeed occurs in the copier, the misfeed message, misfeed location, and paper location are displayed on the screen. Blinking Misfeed location Paper location 1154O466AA Blinking/Lit Misfeed/Paper Location Ref. Item No. Upper Drawer take-up Middle Drawer take-up Lower Drawer take-up Multi/Manual Bypass take-up...
Page 372 <Misfeed Display Resetting Procedure> Misfeed in copier Open and close the Front Door. Misfeed in option Raise and lower the option, or slide the option away from, and back up against, the copier. <Misfeed Detecting Sensor Layout> Separating Failure Paper Exit Switch Detecting Sensor PC21 Paper Attraction...
Page 373: Types Of Misfeed Detection And Detection Timings
2-2. Types of Misfeed Detection and Detection Timings < Upper/ Middle/ Lower Drawer Paper Take-Up Misfeed> Type Detection Timing Detection of paper Upper Drawer Paper Take-Up Sensor PC12 is blocked ( L ) when left Power Switch S1 is turned ON, a misfeed is reset, or the Front Door is opened and closed.
Page 374 < Separator Misfeed> Type Detection Timing Leading-edge Separating Failure Detecting Sensor PC21 is not blocked ( L ) even separation after the lapse of approx. 2.2 sec. after Paper Separator Finger Sole- failure detection noid SL14 has been energized (At two-sheet attraction). PC21 is not blocked ( L ) even after the lapse of approx.
Page 375: Misfeed Troubleshooting Procedures
2-3. Misfeed Troubleshooting Procedures (1) Upper/Middle/Lower Drawer Paper Take-Up Misfeed Possible Defective Components • Upper Drawer Paper Take-Up Sensor • Upper Drawer Paper Take-Up Clutch PC12 CL11 • Middle Drawer Paper Take-Up Sensor • Middle Drawer Paper Take-Up Clutch PC13 CL12 •...
Page 376 <Troubleshooting Procedure> Symptom Step Check Item Result Action • Paper is not Does the paper being used con- Instruct the user to use taken up at form to the product specifica- paper that conforms to all. tions? the product specifica- •...
Page 377 <Troubleshooting Procedure> Symptom Step Check Item Result Action • Paper is at a Are the Paper Take-Up Roll and Clean or change the stop at the Paper Separator Roll deformed, Paper Take-Up Roll Paper worn, or dirty with paper dust? and/or Paper Separator Take-Up Roll.
Page 378: Multi/Manual Bypass Paper Take-Up Failure
(2) Multi/Manual Bypass Paper Take-Up Failure Possible Defective Components • Manual Feed Paper Pick-Up Solenoid • Manual Feed Paper Empty Sensor PC15 • Master Board PWB-I SL20 • Manual Feed Paper Take-Up Clutch CL14 • Paper Take-Up Board PWB-K 1154C02TAA T-12...
Page 379 <Troubleshooting Procedure> Symptom Step Check Item Result Action • Paper is not Is Mnl-PEmp (PC15) operational Check the PC15 actua- detected. as checked with “Switch 1 tor and, if it is okay, (Paper)”? change PC15. • Paper is not Does the paper being used con- Instruct the user to use taken up at form to the product specifica-...
Page 380: Transport Misfeed
(3) Transport Misfeed Possible Defective Components • Paper Take-Up Motor M15 • Paper Leading Edge Detecting Sensor • Transport Roller Clutch CL15 PC18 • Transport Roller Sensor PC19 • Master Board PWB-I • Paper Take-Up Board PWB-K 1154C03TAA T-14...
Page 381 <Troubleshooting Procedure> Symptom Step Check Item Result Action • Paper is at a Are the Transport Rollers Clean or change the stop at the deformed, worn, or dirty with Transport Rollers. Transport paper dust? Rollers. Does M15 turn when the Start key Check for possible is pressed? overload.
Page 382: Transfer Misfeed
(4) Transfer Misfeed Possible Defective Components • Paper Attraction Detection Board PWB-O • Backup Blade 2 Solenoid SL19 • Paper Attraction Detection Board PWB-P • PC Drum Drive Motor M18 • Failure Sensor Adj. Board PWB-Y • High Voltage Unit 3 HV3 •...
Page 383 <Troubleshooting Procedure> Symptom Step Check Item Result Action • Paper is at a Is the Static Charge Roller Clean or change the stop at the deformed, worn, or dirty with Static Charge Roller. Static paper dust? Charge Does the Static Charge Roller Check the drive sys- Roller.
Page 384: Separator Misfeed
(5) Separator Misfeed Possible Defective Components • Separating Failure Detecting Sensor • Lifting Finger Solenoid SL16 • High Voltage Unit 2 HV2 PC21 • Paper Separator Finger Solenoid SL14 1154C05TAA <Troubleshooting Procedure> Symptom Step Check Item Result Action • Paper is at a Does SL14 operate? Check the wiring stop at the...
Page 385: Fusing/Exit Misfeed
(6) Fusing/Exit Misfeed Possible Defective Components • Fusing Motor M17 • Master Board PWB-I • Paper Exit Switch S10 1154C06TAA <Troubleshooting Procedure> Symptom Step Check Item Result Action • Paper is at a Are the Fusing Rollers deformed, Change the Fusing stop at the worn, or dirty with paper dust? Rollers.
Page 386: Duplex Unit Misfeed
(7) Duplex Unit Misfeed Possible Defective Components • Horizontal Transport Drive Clutch CL23 • Paper Take-Up Motor M15 • Horizontal Transport Sensor PC24 • Master Board PWB-I • Paper Take-Up Board PWB-K 1154C07TAA <Troubleshooting Procedure> Symptom Step Check Item Result Action •...
Page 387: Malfunction
MALFUNCTION • This copier has a CPU circuit that self-diagnoses the copier conditions. On detection of a malfunction, it shows on the Touch Panel the corresponding code that consists of num- bers and letters representing a particular malfunction name, location, and definition as detailed below.
Page 388 - What Malfunction Each Code Represents (Machine Status 2) - • If a particular image stabilizer part develops a malfunction, the corresponding code is marked with “NG” on the “Machine Status 2” screen. Listed below is what malfunction each code shown on the screen represents. Study the list and take necessary remedial action.
Page 389 Malfunction Code Detection Timing Description • The Leak Detection signal remains ON for a continuous 1- P-11 Paper Separa- tor Corona mal- sec. period or more after the Paper Separator Corona output function has been turned ON. • The Leak Detection signal remains ON for a continuous 1- P-12 Charge Neutral- izing Corona...
Page 390: Detection Timing By Malfunction Code
3-1. Detection Timing by Malfunction Code , C0100, C309 , C30A (Drive system malfunctions) Code Description Detection Timing C0000 Paper Take-Up Motor The M15 Lock signal is not detected 5 sec. after M15 M15’s failure to turn has been energized. C0001 Paper Take-Up Motor The M15 Lock signal is not detected for a continuous 5- M15 turning at abnor-...
Page 391 C30A1 Polygon Motor M19 The M19 Lock signal remains HIGH for a continuous 10- turning at abnormal sec. period or more while M19 remains energized. timing T-25...
Page 392: C02 , C32 (Pc Drum Charge/Image Transfer/Paper Separator/Charge Neutralizing/Static Charge/Developing Bias Coronas Malfunctions
, C32 (PC Drum Charge/Image Transfer/Paper Separator/Charge Neutralizing/ Static Charge/developing bias coronas malfunctions) Code Description Detection Timing C0200 PC Drum Charge The PC Drum Charge Corona Leak Detection signal Corona failure remains ON for a continuous 1-sec. period or more after the corona output has been turned ON.
Page 393 Code Description Detection Timing C0520 Abnormally high fusing The surface temperature of the Upper Fusing Roller temperature (Defec- remains 180°C or more for a continuous 1-sec. period tive upper fusing heat- after the copier has completed warming up. ing system) C0521 Abnormally high fusing The surface temperature of the Lower Fusing Roller temperature (Defec-...
Page 394 (PH malfunctions) Code Description Detection Timing C3F80 SOS not detected An SOS signal is not detected within 30 msec. after LD has turned ON. (Exposure Lamp malfunctions) Code Description Detection Timing C0400 Exposure Lamp LA1’s Though the LPON signal turns ON, the LPDOWN signal failure to turn ON does not turn OFF when the Power Switch is turned ON, the Front Door is opened and closed, or the Start...
Page 395 (Paper Take-Up Section malfunctions: Isolated Malfunctions) Code Description Detection Timing C0900 Lower Drawer lifting Lower Drawer Lift-Up Sensor PC11 does not go LOW failure even after the lapse of 5 sec. after Lower Drawer Lift-Up Motor M8 has started turning forward. C0910 Middle Drawer lifting Middle Drawer Lift-Up Sensor PC10 does not go LOW failure...
Page 396 Option-Related Malfunctions (S-105/ST-103) Code Description Detection Timing C0B00/ Sorter transport failure See the relevant option Service Manual for the detec- C0B01 tion timings and troubleshooting procedures for different malfunctions. C0B10/ Paper Clamp Unit C0B11 motion failure C0B50/ Stapling failure C0B51/ C0B52 C0B30/ Paper aligning drive...
Page 397 3-2. Troubleshooting Procedures (1) C00 , C0100, C309 , C30A (Drive System Malfunctions) 1. C0000 (M15’s Failure to Turn) C0001 (M15 Turning at Abnormal Timing) Possible Defective Components • Paper Take-Up Motor M15 • Master Board PWB-I 1154C08TAA Step Check Item Result Action Is the malfunction code C0000 shown?
Page 398 2. C0010 (M18’s Failure to Turn) C0011 (M18 Turning at Abnormal Timing) Possible Defective Components • PC Drum Drive Motor M18 • Master Board PWB-I 1154C09TAA Step Check Item Result Action Is the malfunction code C0010 shown? Go to step 5. Does M18 turn when the Start key is YES Check rollers, gears, etc.
Page 399 3. C0049 (M13’s Failure to Turn) Possible Defective Components • Master Board PWB-I • PH Cooling Fan Motor M13 1154C12TAA Step Check Item Result Action Does the voltage across PJ12I-11B on YES Change M13. PWB-I and GND remain DC0V when the Change PWB-I.
Page 400 5. C0030 (M16’s Failure to Turn) C0031 (C16 Turning at Abnormal Timing) Possible Defective Components • Developing Drive Motor M16 • Master Board PWB-I 1154C10TAA Step Check Item Result Action Is the malfunction code C0030 shown? Go to step 5. Does M16 turn when the Start key is YES Check rollers, gears, etc.
Page 401 6. C0042 (M4’s Failure to Turn), C004C (M5’s Failure to Turn) Possible Defective Components • Toner Suction Fan Motor M4 • Master Board PWB-I • Ozone Ventilation Fan Motor M5 1154C11TAA Step Check Item Result Action Is the malfunction code C0042 shown? Go to step 5.
Page 402 7. C0060 (M17’s Failure to Turn) C0061 (M17 Turning at Abnormal Timing) Possible Defective Components • Fusing Motor M17 • Master Board PWB-I 1154C14TAA Step Check Item Result Action Is the malfunction code C0060 shown? Go to step 5. Does M17 turn when the Start key is YES Check rollers, gears, etc.
Page 403 8. C3090 (M14’s Failure to Turn) Possible Defective Components • Fusing Unit Cooling Fan Motor M14 • Master Board PWB-I • Power Supply Board PWB-L 1154C24TAA Step Check Item Result Action Does M14 turn when the Start key is YES Check rollers, gears, etc. for pressed? overload.
Page 404 9. C3090 (M3’s Failure to Turn) Possible Defective Components • PC Drum Charge Wire Cleaning Motor • Power Supply Board PWB-L • Master Board PWB-I 1154C15TAA Step Check Item Result Action Does M3 turn when the Start key is Check for loose connectors. pressed? Do PJ9L-1 and -2 on PWB-L output as fol- Change PWB-L.
Page 405 10. C30A0 (Polygon Motor’s Failure to Turn) C30A1 (Polygon Motor Turning at Abnormal Timing) Possible Defective Components • Polygon Motor • Master Board PWB-I • Polygon Motor Drive Board Step Check Item Result Action Is the malfunction code C30A0 shown? Go to step 3.
Page 406 C0210 Step Check Item Result Action Is the housing dirty, the high-voltage con- YES Clean or change the defective tact deformed, or the wire dirty or snapped part. off? Does the voltage across PJ15IB-9 on YES Change HV3. PWB-I and GND remain DC0V after the Change PWB-I.
Page 407: (Fusing Malfunctions
(3) C05 (Fusing Malfunctions) 1. C0500 (Warming-up Failure: Upper Fusing Roller Heater) C0510 (Abnormally Low Fusing Temperature: Upper Fusing Roller Heater) C0520 (Abnormally High Fusing Temperature: Upper Fusing Roller Heater) Possible Defective Components • Upper Fusing Roller Heater Lamp H1 •...
Page 408 C0500, C0510 Step Check Item Result Action Does H1 turn ON when the Power Switch Go to step 5. is turned ON after the malfunction has been reset? Is TH1 connected securely? Connect TH1 securely. Is TH1 dirty? YES Clean or change TH1. Disconnect CN51.
Page 409 2. C0501 (Warming-up Failure: Lower Fusing Roller Heater) C0511 (Abnormally Low Fusing Temperature: Lower Fusing Roller Heater) C0521 (Abnormally High Fusing Temperature: Lower Fusing Roller Heater) Possible Defective Components • Lower Fusing Roller Heater Lamp H2 • Lower Fusing Roller Thermistor TH2 •...
Page 410 C0501, C0511 Step Check Item Result Action Does H2 turn ON when the Power Switch Go to step 5. is turned ON after the malfunction has been reset? Is TH2 connected securely? Connect TH2 securely. Is TH2 dirty? YES Clean or change TH2. Disconnect CN52.
Page 411: C09 (Paper Take-Up Section Malfunctions: Isolated Malfunctions
(4) C09 (Paper Take-Up Section Malfunctions: Isolated Malfunctions) 1. C0900 (Lower Drawer Lifting Failure) C0910 (Middle Drawer Lifting Failure) C0920 (Upper Drawer Lifting Failure) Possible Defective Components • Upper Drawer Lift-Up Motor M6 • Upper Drawer Lift-Up Sensor PC9 • Middle Drawer Lift-Up Motor M7 •...
Page 412: C0E (Erase Lamp Malfunctions
Step Check Item Result Action Does M7 turn when the Middle Drawer is Check the motor for overload slid into the copier? and for loose connectors. If they are okay, change M7. Select “Switch 1 (Paper)” from the “State Check PC10 for installation and Confirm”...
Page 413: C0F (Sensor Malfunctions), C3500 (Black Developing Unit Malfunction), C3F90 (T-Base Failure
(6) C0F (Sensor Malfunctions), C3500 (Black Developing Unit Malfunction), C3F90 (T-Base Failure) C0F30 [ATDC Sensor (C) Low Density Failure] to C0F39 [Multi-Copy Cycle Developing Efficiency (Bk) High Density Failure] C3500 (Black Developing Unit Failure) For these troubleshooting procedures, see “4-3. Troubleshooting Procedure by Particular Image Quality Problem”...
Page 414 C3700 (Optical System Cooling Fan Motor Malfunction 1: Front) C3710 (Optical System Cooling Fan Motor Malfunction 2: Rear) C3720 (Optical System Cooling Fan Motor Malfunction 3: Original Surface) Possible Defective Components • A/D Converter Board PWB-B • IR Cooling Fan Motor 2 M25 •...
Page 415: C3 (Ph Malfunctions
(7) C3 (PH Malfunctions) C3F80 (SOS Not Detected) Possible Defective Components • PH Control Board (Analog) PWB-JA • SOS Sensor • PH Control Board (Digital) PWB-JD <Troubleshooting Procedure> Step Check Item Result Action Are the connectors in the PH Unit plugged YES Change the PH Unit.
Page 416: C37 (Optical System Malfunctions
(9) C06 , C33 , C37 (Optical System malfunctions) 1. C0650 (Scanner Home Position Sensor PC1 Malfunction) / C0660 (Scanner Overrun Failure) Possible Defective Components • A/D Converter Board PWB-B • Scanner Home Position Sensor PC1 • IR Control Board PWB-C •...
Page 417 <Troubleshooting Procedure> Step Check Item Result Action Is any of the CF910 gain adjustment val- YES A. Check for loose connector ues of CCD Check “0” or “255”? between PWB-A and PWB- B, or between PWB-B and PWB-C, or check har- nesses for open circuit.
Page 418: Power Supply Related Malfunctions
3-3. Power Supply Related Malfunctions (1) Main Relay RY1 is Not Turned ON Possible Defective Components • Noise Filter FLT1 • Power Supply Board PWB-L • DC Power Supply 1 PU1 • Main Relay RY1 • Master Board PWB-I 1154C21TAA <Troubleshooting Procedure>...
Page 419: Though Main Relay Ry1 Is Turned On, No Control Panel Indicators Light Up
(2) Though Main Relay RY1 is Turned ON, No Control Panel Indicators Light Up Possible Defective Components • IR Control Board PWB-C • Control Panel UN27 • Power Supply Board PWB-L • DC Power Supply 1 PU1 1154C22TAA <Troubleshooting Procedure> Step Check Item Result...
Page 420: No Power Is Supplied To Options
(3) No Power is Supplied to Options Possible Defective Components • Power Supply Board PWB-L • DC Power Supply PU1 1154C23TAA <Troubleshooting Procedure> Step Check Item Result Action Is the source voltage being applied to Check the power line wiring. PU1? Is DC24V being output from PU1? Change PU1.
Page 421: Image Quality Problems
IMAGE QUALITY PROBLEMS 4-1. Troubleshooting Image Quality Problems 1. Image quality problems can occur for various reasons. When troubleshooting an image quality problem, you must first determine A. whether the cause or causes of the prob- lem are very basic ones or highly technical ones, and B. whether the cause or causes are attributable to the IR or PH.
Page 422: White Lines In The Fd And Cd
4-3. Troubleshooting Procedure by a Particular Image Quality Problem (1) White Lines in the FD and CD White Lines in the FD White Lines in the CD 1144T002AA 1144T003AA <Troubleshooting Procedure> Cause Step Check Item Result Action Does the image problem occur Go to step 12.
Page 423 <Troubleshooting Procedure> Cause Step Check Item Result Action Defective PC Is the surface of the PC Drum YES Change the PC Drum. Drum dirty or scratched? Change the Cleaning Blade as a set if necessary. (“AIDC Mode/AIDC Offset” and “Gradation Adjust”) Are the edges of the PC Drum YES Clean the edges.
Page 424: Black Lines In The Fd And Cd
(2) Black Lines in the FD and CD Black Lines in the FD Black Lines in the CD 1144T004AA 1144T005AA <Troubleshooting Procedure> Cause Step Check Item Result Action Does the image problem occur Go to step 9. in the FD? Defective IR Is the value for the “Left Readjust.
Page 425: Oil Streaks In The Fd
<Troubleshooting Procedure> Cause Step Check Item Result Action Defective Are the Corona Wire and YES Clean or change the Cleaning Unit Housing dirty or deteriorated? Corona Wire and Housing. (“Gradation Adjust”) Is the connector on HV1 con- Reconnect the connector. nected properly? Defective Is there a burr on the end of...
Page 426: White Bands In The Fd And Cd
(4) White Bands in the FD and CD White Bands in the FD White Bands in the CD 1144T007AA 1144T008AA <Troubleshooting Procedure> Cause Step Check Item Result Action Does the image problem occur Go to step 15. in the FD? Defective IR Is the shading sheet dirty? YES Clean the sheet.
Page 427 <Troubleshooting Procedure> Cause Step Check Item Result Action Defective Is the Paper Separator Corona YES Clean or replace it. Paper Sepa- dirty or deteriorated? rator/ Charge If white bands persist in the FD direction even after performing step Neutralizing 2 through 13, the PH Unit is probably contaminated; therefore, Unit replace it.
Page 428: Black Bands In The Fd And Cd
(5) Black Bands in the FD and CD Black Bands in the FD Black Bands in the CD 1144T009AA 1144T010AA <Troubleshooting Procedure> Cause Step Check Item Result Action Does the image problem occur Go to step 10. in the FD? Defective IR Is the value for the “Left Readjust.
Page 429 <Troubleshooting Procedure> Cause Step Check Item Result Action Defective PC Is the surface of the PC Drum YES Change the PC Drum. Drum dirty or scratched? Change the Cleaning Blade as a set if necessary. (“AIDC Mode/AIDC Offset” and “Gradation Adjust”) Is the PC Drum grounded Clean or change the PC properly?
Page 430: Smear On Entire Copy And Backside
(6) Smear on Entire Copy and Backside Smear on Entire Copy Smear on Backside 1144T011AA 1144T012AA <Troubleshooting Procedure> Cause Step Check Item Result Action Does the image problem occur YES Go to step 7. on the back side of the copy? Defective IR Are the lens, mirror, and Origi- YES Clean these surfaces.
Page 431 <Troubleshooting Procedure> Cause Step Check Item Result Action Defective Is the gap in the Transfer Drum Readjust the gap. Transfer Retract Solenoid adjusted Drum properly? Defective Is the Static Charge Roller YES Clean or replace it. Static Charge Scraper dirty or deteriorated? Unit Defective Is the Synchronizing Roller...
Page 432: Foggy Background
(7) Foggy Background 1144T013AA <Troubleshooting Procedure> Step Check Item Result Action Is extraneous light striking the interior of YES Block the extraneous light. the copier? Do the data for “VB Shift,” “Background A. Change the data to the Voltage,” “ATDC Level Setting,” and “AE standard values.
Page 433 <Troubleshooting Procedure> Step Check Item Result Action When comparing the color of the devel- YES Check the wiring between oper in the Developing Unit with that of the PWB-I and the Toner Replen- starter, is the developer color apparently ishing Motor and, if it is intact, darker? change the motor.
Page 434: 4-Color Spots, Monocolor Spots
(8) 4-Color Spots, Monocolor Spots 4-Color Spots Monocolor Spots 1144T014AA 1144T015AA <Troubleshooting Procedure> Cause Step Check Item Result Action Does the image problem occur YES Go to step 7. on the back side of the copy? Defective Is the inside of the Developing YES Remove the foreign mat- Developing Unit plugged with foreign mat-...
Page 435: Void Image
(9) Void Image 1144T016AA <Troubleshooting Procedure> Cause Step Check Item Result Action Does the image problem occur YES Go to Step 6. on the leading edge of the copy? Defective Is the developing bias being Check the wiring between Developing output properly? PWB-I and HV4 and, if it is Unit...
Page 436: Void, White Spots
(10) Void, White Spots Void White Spots 1144T017AA 1144T018AA <Troubleshooting Procedure> Cause Step Check Item Result Action Is the image problem “white YES Go to step 8. spots”? Defective Is the inside of the Developing YES Remove the foreign mat- Developing Unit plugged with foreign mat- ter.
Page 437 <Troubleshooting Procedure> Cause Step Check Item Result Action Defective Is the inside of the Developing YES Remove the foreign mat- Developing Unit plugged with foreign mat- ter. If the problem recurs, Unit ter or toner? change the developer. (“Developer” and “Grada- tion Adjust”) Is the Toner Replenishing YES Remove the foreign matter.
Page 438: Whole Uneven Density
(11) Whole Uneven Density <Troubleshooting Procedure> Cause Step Check Item Result Action Defective IR Are the connectors on PWB-A, Reconnect the connectors. -B, and -C connected properly? Is the source voltage being Change PU4. supplied? Defective PH Is the window of the PH Lower YES Clean the window.
Page 439: Uneven Density In The Fd And Cd
(12) Uneven Density in the FD and CD Uneven Density in the FD Uneven Density in the CD 1144T019AA 1144T020AA <Troubleshooting Procedure> Cause Step Check Item Result Action Does the image problem occur Go to step 8. in the FD? Defective IR Is the shading sheet dirty? YES Clean the sheet.
Page 440 <Troubleshooting Procedure> Cause Step Check Item Result Action Defective Are the Corona Wire and YES Clean or change the Cleaning Unit Meshes dirty or deteriorated? Corona Wire and Meshes. Is the connector on HV1 con- Reconnect the connector. nected properly? Others Is the Main Erase Lamp dirty YES Clean or replace the Main...
Page 441: Poor Color Reproduction
(13) Poor Color Reproduction 1144T022AA <Troubleshooting Procedure> Cause Step Check Item Result Action Defective PH Is the window of the PH Lower YES Clean the window. Unit dirty? (“Gradation Adjust”) Defective Is the inside of the Developing YES Remove the foreign matter. Developing Unit plugged with foreign mat- If the problem recurs,...
Page 442 <Troubleshooting Procedure> Cause Step Check Item Result Action Defective PC Is the PC Drum Heater ener- A. Check the PC Drum Drum gized? flange contact for proper contact. B. Check the wiring between SSR5 and H3. Change the Heater Assy if necessary. Is the PC Drum grounded Clean or change the PC properly?
Page 443 <Troubleshooting Procedure> Cause Step Check Item Result Action Defective Is the Image Transfer Corona YES Clean or change the Image Image Trans- dirty or deteriorated? Transfer Corona. fer Corona Is the HV3 output proper? Check the connections of the connector on the Board, and if it is proper, change HV3.
Page 444: Gradation Reproduction Failure In Original Higher-Density Areas
(14) Gradation Reproduction Failure in Original Higher-Density Areas 1144T023AA <Troubleshooting Procedure> Step Check Item Result Action Run “Gradation Adjust” three times using CF paper. Is gradation failure evident on the output YES Go to step 4. sample? Does gradation failure persist when a This completes the procedure.
Page 445: Gradation Reproduction Failure In Original Lower-Density Areas
(15) Gradation Reproduction Failure in Original Lower-Density Areas 1144T024AA <Troubleshooting Procedure> Step Check Item Result Action Is the Original Glass dirty? (Is the shading YES Clean the Original Glass and sheet dirty?) shading sheet. Run “Gradation Adjust” three times using CF paper. Is gradation failure evident on the output Go to step 5.
Page 446 <Troubleshooting Procedure> Step Check Item Result Action Are the PH Upper and Lower Units incor- Change the Polygon Motor rectly installed? Is the PH Lower Unit win- Drive Board, PWB-JA, and -JD, dow dirty? and PH Upper and Lower Units as a set.
Page 447: Rough Image (Uneven Particle Size
(16) Rough Image (Uneven Particle Size) 1144T025AA <Troubleshooting Procedure> Cause Step Check Item Result Action Defective Is the Developer Life Counter YES Replace the developer. Developing around 30K? Unit Is the inside of the Developing YES Remove the foreign matter. Unit plugged with foreign mat- If the problem recurs, ter or toner?
Page 448 <Troubleshooting Procedure> Cause Step Check Item Result Action Defective Is the Transfer Film affixed Referring to Transfer Film properly? DIS/REASSEMBLY, ADJUSTMENT, reaffix the film. Defective Is the Image Transfer Corona YES Clean or change the Image Image Trans- dirty or deteriorated? Transfer Corona.
Page 449: High I.d
(17) High I.D. 1144T026AA <Troubleshooting Procedure> Step Check Item Result Action Open the “IR Area” screen from the Readjust the items of “IR Area.” “Machine Adjust” menu of the Service mode. Is each adjusting item okay? Do the data for “VB Shift,” “Background A.
Page 450 <Troubleshooting Procedure> Step Check Item Result Action Open the “ATDC Sensor” screen from the Go to step 13. “Machine Adjust” menu of the Service mode and check for the sensor output of the color that is considered faulty. Is the sensor output 8% or more? When comparing the color of the devel- YES Check the wiring between...
Page 451: Low I.d
(18) Low I.D. 1144T027AA <Troubleshooting Procedure> Step Check Item Result Action Open the “IR Area” screen from the Readjust the items of “IR Area.” “Machine Adjust” menu of the Service mode. Is each adjusting item okay? Do the data for “VB Shift,” “Background A.
Page 452 <Troubleshooting Procedure> Step Check Item Result Action 11 Does the problem persist even after the YES Change the Polygon Motor Transport Unit has been changed? Drive Board, PWB-JA, and -JD, and PH Upper and Lower Units as a set. (“IR Area,” “PRT Area,” and “Gradation Adjust”) This completes the procedure.
Page 453: Blank Copy, Black Copy
(19) Blank Copy, Black Copy Blank Copy Black Copy 1144T028AA 1144T029AA <Troubleshooting Procedure> Step Check Item Result Action Is the problem a “blank copy”? Go to step 7. From the “Test Print” menu, select “Gradation Pattern” and then “4 Color” and press the Start key.
Page 454: Incorrect Image Registration
(20) Incorrect Image Registration 1144T030AA <Troubleshooting Procedure> Symptom Step Check Item Result Action Defective IR Is the value for “Left Image” out of Readjust by referring to correct adjustment? DIS/REASSEMBLY, ADJUSTMENT. Is the value for “Top Image” out of Readjust by referring to correct adjustment? DIS/REASSEMBLY, ADJUSTMENT.
Page 455 (21) Incorrect Image Registration 1144T031AA 1144T032AA <Defective Image Samples> Symptom Step Check Item Result Action Defective IR. Is the focus out of correct adjust- Readjust by referring to ment? DIS/REASSEMBLY, ADJUSTMENT. Are the values for “CD-Mag” and Readjust by referring to “FD-Mag”...
Page 456: Toner Scattering Image
(22) Toner Scattering Image 1144T032AA <Troubleshooting Procedure> Cause Step Check Item Result Action Is the problem “distortion”? YES Go to step 11. Defective Is the Developer Life Counter YES Replace the developer. Developing around 30K? Unit Is the inside of the Developing YES Remove the foreign matter.
Page 457 <Troubleshooting Procedure> Cause Step Check Item Result Action Defective Is the Charge Neutralizing YES Clean or change the Paper Sepa- Corona dirty or deteriorated? Corona. rator/Charge Neutralizing Unit Defective IR Is the belt in the scanner motor Retighten the belt. properly taunt? Are the connectors on PWB-A, Reconnect the connectors.
Page 458: Incorrect Color Image Registration, Moire
(23) Incorrect Color Image Registration, Moire Incorrect Color Image Registration Moire 1144T033AA 1144T034AA <Troubleshooting Procedure> Cause Step Check Item Result Action Is the problem “moire”? YES Go to step 9. Defective IR Is the Scanner timing belt YES Readjust by referring to slack? DIS/REASSEMBLY, ADJUSTMENT.
Page 459: Periodic Uneven Density
(24) Periodic Uneven Density 1144T035AA <Troubleshooting Procedure> Cause Step Check Item Result Action Defective PH Are the uneven pitches at YES Check the installation of intervals of between 0.5 and each PH Assy. If it is cor- 0.6mm? rect, replace the PH Upper and Lower Assy.
Page 460: Image Stabilizer Malfunction
4-4. Image Stabilizer Malfunction (1) P-1: NG (LD Failure) Step Check Item Result Action Are the PH Upper and Lower Units Reinstall the unit. installed properly? Is there any print jack left loose on PWB-I, YES Plug the print jacks into posi- -JD, and -JA, SOS Board, and Polygon tion.
Page 461: P-3: Ng (Pc Drum Failure
(3) P-3: NG (PC Drum Failure) Step Check Item Result Action Is the VO value correct as checked with Change the VO Sensor. “Copying Status” available from “Machine Adjust”? (4) P-4: NG (Surface Potential Detection Sensor Failure) Step Check Item Result Action Is Surface Potential Detection Sensor...
Page 462: P-6: Ng (C Developing Unit Failure
(6) P-6: NG (C Developing Unit Failure) Step Check Item Result Action Select “Test Print” from the Service mode menu. Select “Gradation Pattern” and then “4 Color”; then, press the Start key. • No image: To step 3. How is the output image? •...
Page 463 Step Check Item Result Action Is there contact and continuity between YES Change the ATDC Sensor and the Fixing Bracket and the end of the shaft developer. (“Developer at the front end of the Developing Unit? Change Mode,” “Gradation Adjust”) Change the Developing Unit.
Page 464: P-7: Ng (M Developing Unit Failure
(7) P-7: NG (M Developing Unit Failure) Step Check Item Result Action Select “Test Print” from the Service mode menu. Select “Gradation Pattern” and then “4 Color”; then, press the Start key. • No image: To step 3. How is the output image? •...
Page 465 Step Check Item Result Action Is there contact and continuity between YES Change the ATDC Sensor and the Fixing Bracket and the end of the shaft developer. (“Developer at the front end of the Developing Unit? Change Mode,” “Gradation Adjust”) Change the Developing Unit.
Page 466: P-8: Ng (Y Developing Unit Failure
(8) P-8: NG (Y Developing Unit Failure) Step Check Item Result Action Select “Test Print” from the Service mode menu. Select “Gradation Pattern” and then “4 Color”; then, press the Start key. • No image: To step 3. How is the output image? •...
Page 467 Step Check Item Result Action Is there contact and continuity between YES Change the ATDC Sensor and the Fixing Bracket and the end of the shaft developer. (“Developer at the front end of the Developing Unit? Change Mode,” “Gradation Adjust”) Change the Developing Unit.
Page 468: P-9: Ng (Bk Developing Unit Failure 1
(9) P-9: NG (Bk Developing Unit Failure 1) Step Check Item Result Action Is the value for “Dev. Bk” of “Bk Toner YES Change the developer. Sup. Status” near 30,000? Or, is the η value low with an image that is rough to the touch? Is the AIDC Sensor dirty or the adjustment YES Clean the AIDC Sensor, then...
Page 469: P-11: Ng (Paper Separator Corona Failure
(11) P-11: NG (Paper Separator Corona Failure) Step Check Item Result Action Is the Paper Separator Corona wire dirty YES Clean or change the corona or has it snapped off? wire. (12) P-12: NG (Charge Neutralizing Corona Failure) Step Check Item Result Action Is the Charge Neutralizing Corona wire...
Page 470: P-17: Ng (S/P Communications Error
(17) P-17: NG (S/P Communications Error) Step Check Item Result Action Are print jacks on PWB-K (PJ10K) and Reconnect the print jacks. PWB-I (PJ3I) plugged in correctly? (18) P-18: NG (PC Drum Charge Corona Wire Cleaning Malfunction) Step Check Item Result Action Does the cleaning element move...
Page 471: P-20: Ng (Abnormally High Bk Developing Efficiency
(20) P-20: NG (Abnormally High Bk Developing Efficiency) Step Check Item Result Action Is the Toner Hopper turning abnormally YES A. Check the wiring between during a copy cycle? PWB-I and Toner Replen- ishing Motor (Bk) M9. B. Check the motor drive for possible overload and, if it is free of overload, change C.
Page 472: S-2: Ng (Intensity Adjustment Failure
(22) S-2: NG (Intensity Adjustment Failure) Step Check Item Result Action Are the Original Glass, mirror, and CCD YES A. Clean dirty parts or change lens dirty or deteriorated? defective parts. B. Open “Machine Adjust” and then “IR Area.” Reset the control value to “0”...
Page 473 CF911P Service Information Revision Histry Table. DATE PAGE NOTE 98.10.28 All Pages C01 stage data E-Mail to MC(Utiyama), MH(Suzanne)
Page 474 Trademarks Minota, CF911P are registered trademark or trademarks of Minolta Co., Ltd. PC/AT is a registered trademark of International Business Machines Corporation. Microsoft, MS-DOS, Windows and Windows NT are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries.
Page 475 This manual contains explanations, modifications and replacements that will make the CF910 Service Manual applicable to the CF911P Printer. • For all pages in the CF910 Service Manual, please read “printer” for the word “copier” and “print” for the word “copy”.
Page 476: Cf910 To Cf911P Changes List
D: DisReassembly/Adjustment 1. CF910 to CF911P Changes List 1-1. The CF911P does not contain the following CF910 parts (Electrical Parts List). Exposure Lamp Scanner Motor Original Glass Cooling Fan Motor IR Cooling Fan Motor 1 IR Cooling Fan Motor 2...
Page 477: Disreassembly/Adjustment
D: DisReassembly/Adjustment 2. DisReassembly/Adjustment Manual Change List PAGE µ Laser max power 8 mW 26.79 D-7, 8 PWB-A, PWB-B, PWB-C, PWB-G, Not applicable UN27 Changed CF911P Operational Panel. D-72 to 79 Optical Section Not applicable D-100 IR (CCD Assy, Mirror Lens/Exposure Not applicable Lamp/ Cable D-113...
Page 478: General/Mechanical/Electrical
M: General/Mechanical/Electrical 3. General/Mechanical/Electrical Manual Change List PAGE 26.79 µW Laser Radiation Power: 8mW Exposure Lamp, Original Scanning, Scanning Delete Density, Exposure System, Types of Originals, Maximum Size of Original. Warming-up Time After Energy Saver Mode Not applicable First Copy Time (Upper Drawer, ×1.000, First Print Time (Upper Drawer) Manual Exposure Mode) Copying Speed for Multi Copy Cycle (Upper...
Page 479: Switches On Pwbs, Service Mode
S: Switches on PWBs/Service Mode 4. Switches on PWBs, Service Mode Manual Change List PAGE All pages “Touch Panel Display” “PC screen Display”. S-3, 4 Control Panel Change to Operation Panel illust. See page 7 in this manual. Warning screens See replacement page 20.
Page 480: Troubleshooting
T: TroubleShooting 5. TroubleShooting Manual Change List PAGE T-2, 3, 4 Screen illust. Change to PC screen. See replacement page Numeric jam locations. Changed to lettering. See replacement page IR scanner section Cut IR section. See replacement page 28. T-21 Malfunction call indicator.
Page 481: Operation Panel
M: General/Mechanical/Electrical 6. Operation Panel 6-1. Control Panel Part Name Function 1. On-line key ON: Printer is connected to the host PC. OFF: The printer is not connected. 2. Ready LED ON: The printer is idle (normal state). Blinking: The printer is processing or printing a job, or commu- nicating with a remote computer.
Page 482 M: General/Mechanical/Electrical Part Name Function The down arrow takes you to the previous entry in the list. The right arrow in the setup menus advances the cursor to the text-entry position to the right. The left arrow in the setup menus backspaces the cursor to the text-entry position to the left.
Page 483: Connection To Notebook Pc And X-Rite (Dtp32)
CONNECTION TO NOTEBOOK PC AND X-RITE (DTP32) CP911P ........... Color printer Notebook PC........Starts the Jig Software for adjustment. X-rite..........Color Tone Tester Switcher .......... Switches between the Notebook PC and the X-rite. Converter ........Converts the RS232C into the TTL RC232C straight cable ....
Page 484: Jig Software Set-Up
JIG SOFTWARE START-UP 1. Load the Service Software CD into the CD Drive of the Notebook PC. Copy the software to the HDD. 2. Open Windows Explorer, click on the HDD drive, double-click on the file “FACTE.exe”. If chains of small characters “DF” appear on the PC screen, the connection is complete.
Page 485: Replacement
8. Replacement Pages 3-7. SETTING MODE (1) Accessing the Serviceman Mode 1. Select “Serviceman mode” from the “CF911P” in the menu bar. (2) Manual Paper Width 1. Place several sheets of A3 wide (305mm × 457mm) or 12” × 18” paper on the Multi Bypass Table.
Page 486 3-8. MACHINE ADJUST MODE (1) Accessing the Machine Adjust Mode 1. Open “CF911P” in the menu bar on the PC and click “Serviceman Mode.” 2. Select “Machine Adjust” from the Serviceman mode menu. (2) Fuser NIP NOTE After Fuser Nip is adjusted, Fuser Speed must also be adjusted. 1.
Page 487 3-9. DEVELOPER CHANGE MODE Developer Change (Developer Discharge Developer Filling Developer Agitating) Note Although functions are available to perform Developer Discharge, Developer Filling, or Developer Agitating individually, perform “Developer Change” that covers all these in a given sequence. 1. Turn OFF the Power Switch. 2.
Page 488 3-10. GRADATION ADJUST 1. Turn OFF the front door interlock switch and close the front door. Click “Gradation Adjust.” 2. For the Gradation adjustment procedure, refer to the on-line manual. (Double-click the file “FACThelp.htm” on the CD-ROM.) NOTE: Before making the Gradation Adjust, set PRT Max. Density, PRT Highlight, Background Voltage and VB Shift in the Image Adjust to “0”.
Page 489 If the printer is not printing, restart the Facte.exe program. This screen appears before the print cycle is completed. 1. Switch the Swticher to the “B” X-Rite position. (If the switch position is not changed, the PC screen shows “_”.) 2.
Page 490 print through the X-Rite from the front so it can read the Black data. 10. Transmit the correction values to CF911P. Switch the Switcher to the “A” CF911P position. (If the switch position is not changed, the PC screen shows “_”.) Click the Exit button. Data is then transferred to the printer, showing the message “Cyan Copying, .."...
Page 491 Another GRADATION ADJUSTMEN Another Gradation Adjustment is Visual Calibration, when the X-Rite DTP32 is not being used. 1. To print out the VisualCal chart (Fig. 1): chart Limits and 30% Match Press the Menu key. Press the down key to select “Reboot Server”. Press the Set key.
Page 492 4-3. FLASH MEMORY Software has conventionally been upgraded by replacing ROM on each board. This printer employs flash memory for the system control IC mounted on the IR Control Board. Its con- tents are reprogrammed easily by performing the following steps using the IC card (mem- ory card), into which data has been previously downloaded.
Page 493 8-1. PC Drum Cleaning <Cleaning Operation> 1. The Cleaning Blade is pressed against the sur- face of the PC Drum to scrape toner off it. 2. The Paddle flips toner accumulated on the edge of the Cleaning Blade to the Toner Conveying Coil.
Page 494 (1) Warning Screens • The warning screen may be a malfunction display, error display, warning display, or a caution display. <Malfunction Display> • A malfunction display is given when trou- ble occurs which cannot be corrected by the user. Load xxx in Tray 1 Alert Service Code...
Page 495 FUNCTION OF SWITCHES AND VARIABLE RESISTORS ON PWBs <Clearing Procedures> • Open “CF911P” in the menu bar on the PC screen and click “Clear Mode”. 1. Turn ON the Power Switch and click the “Trouble Reset” or “Memory Clear” buttons. 2.
Page 496 DEVELOPER CHANGE MODE • This mode is used to adjust and operate the Developing Unit. NOTE The Developer mode will only be outlined in this manual. For more details, see DIS/REAS- SEMBLY, ADJUSTMENT or TROUBLESHOOTING. 7-1. Developer Change Mode Menu Screen 7-2.
Page 497 DATE/TIME INPUT MODE • This mode is used to set the time-of-day and date. 9-1. Date/Time Input Mode Screen 9-2. Date/Time Input Mode Setting Procedure <Procedure> 1. Open “CF911P” in the menu bar on the PC and click “Serviceman Mode.” 2.
Page 498 1-4. Controlled Parts Check Procedure This printer allows the Tech. Rep. to easily determine whether a particular controlled part is fully operational and check for printer operating conditions. (For details, see the following pages.) <Procedure> 1. When a paper misfeed or malfunction occurs, identify on the circuit diagram accompa- nying the text the controlled part that is probably responsible for the problem.
Page 499 • These are only typical screens which may be different from what are shown for each indi- vidual printer. Switch 1 (Paper Passage) Switch 2 (Options) Sensors 3 (Others) Table No. Copying Status PC Dev. Status -25-...
Page 500 Black Toner Supply Status Temperature and Humidity ROM Version Paper Passage Check -26-...
Page 501 PAPER TRANSPORT FAILURE 2-1. Paper Misfeed When a paper misfeed occurs in the printer, a misfeed message and the misfeed location are displayed on the LCD. Paper misfeed location label inside Front Door. LCD Message Paper jam at Misfeed location 1154O466AA Location Misfeed/Paper Location...
Page 502 <Misfeed Display Resetting Procedure> Misfeed in printer Open and close the Front Door. Misfeed in option Raise and lower the option, or slide the option away from, and back up against, the printer. <Misfeed Detecting Sensor Layout> Separating Failure Paper Exit Switch Detecting Sensor PC21 Paper Attraction...

Minolta CF910 Service Manual

Table of Contents

Service Instructions/Disassembly/Reassembly

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Troubleshooting

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