Page 1 CF1501/CF2001 SERVICE MANUAL GENERAL...
Page 2 INDEX (GENERAL) GENERAL MECHANICAL/ELECTRICAL This copier assumes that components be replaced by the unit. No circuit dia- grams or electrical component layout drawings therefore contain any of elec- trical parts included in units. In text, however, some of these electrical components are given for the sake of explanation of mechanical operations of different units.
Page 3 GENERAL...
Page 4: Table Of Contents
CONTENTS 1. SPECIFICATIONS ................... G-1 2. PRECAUTIONS FOR INSTALLATION ............G-4 2-1. Installation Site ..................G-4 2-2. Power Source ..................G-4 2-3. Grounding ....................G-4 3. PRECAUTIONS FOR USE ................G-5 3-1. To ensure that the copier is used in an optimum condition ..... G-5 3-2.
Page 5: Specifications
SPECIFICATIONS Freestanding scanner and printer separated from each Type other Scanning in main scanning direction with a reduction-type Original Scanning color CCD (RGB 3 lines) OPC (organic photoconductor) PC Drum Type Electrostatic dry-powdered image transfer to plain paper Copying System Equivalent to 600 dpi Scanning Density Equivalent to 600 dpi in main scanning direction x 1800 dpi...
Page 6 First Copy Time: Full Color 15 sec. (A4C) Mono Color 12 sec. (A4C) (1st Drawer, full size, Manual Exposure) Copying Speed for Multi-Copy Cycle (copies/min.): Full Color / Mono Color 15-cpm 20-cpm 15-cpm 20-cpm Area Size Area Size Copier Copier Copier Copier 11 ×...
Page 7 Environmental Conditions: Temperature 10 to 30 °C (with a fluctuation of 10 °C or less per hour) Humidity 25 to 85 % (with a fluctuation of 20 % or less) Ambient Illumination 3,000 lux or less Levelness 1° (1.75/100 or less) Dimensions With Rack Width ..
Page 8: Precautions For Installation
PRECAUTIONS FOR INSTALLATION 2-1. 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. • Where it will be subjected to sudden fluctuations in either temperature or humidity. •...
Page 9: Precautions For Use
PRECAUTIONS FOR USE 3-1. To ensure that the copier is used in an optimum condition • 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 10: Handling Of The Consumables
HANDLING OF THE CONSUMABLES Before using any consumables, always read the label on its container carefully. • Paper can be easily damaged by dampness. To prevent absorption of moisture, store paper, which has been removed from its wrapper but not loaded in the drawer, in a sealed plastic bag in a cool, dark place.
Page 11: System Options
SYSTEM OPTIONS 1166O014AA C4004O047AA 1166O007AA C4004O046AA C4004O040AA C4004O043AA C4004O041AA C4004O042AA C4004O044AA C4004O045AA 1166O190AA 4108U010 1166O191AA 1. Duplexing Document Feeder AFR-16 8. Copy Desk 2. Original Cover OC-2 9. Copy Table 3. Copier Stand 10. 10-Mailbin Sortor JS-1002 4. Duplex Unit AD-14 11.
Page 12 MECHANICAL/ ELECTRICAL...
Page 13 CONTENTS 1. CROSS-SECTIONAL VIEW ................M-1 2. COPY PROCESS .................... M-2 3. DRIVE SYSTEM ....................M-4 4. OPERATING SEQUENCE ................M-5 5. CONTROL BLOCK DIAGRAM ................ M-7 6. LOCATIONS OF TERMINALS ................ M-8 7. IMAGE STABILIZATION SYSTEM ..............M-10 7-1. AIDC Detection ..................M-11 7-2.
Page 14 14-1.Toner Replenishing Mechanism .............. M-50 14-2.Toner Empty Detection Control ............... M-52 15. PAPER TAKE-UP SECTION ................M-53 15-1.Drawer-in-Position Detecting Mechanism ..........M-53 15-2.Drawer Paper Empty Detecting Mechanism ..........M-54 15-3.Drawer Paper Near Empty Detecting Mechanism ........M-54 15-4.Paper Supply Level LED Display ............. M-55 15-5.Paper Size Detecting System ..............
Page 15 (3) Web Take-Up Mechanism ............... M-92 (4) Web Slack Take-Up Control ............M-92 21-6.Fusing Web Near Empty and Empty Detection ........M-93 21-7.New Fusing-Related Parts Detection ............M-93 21-8.Fusing Temperature Control ..............M-94 22. OTHER MECHANISMS ................... M-96 22-1.Memory Backup ..................M-96 22-2.Flash Memory ..................
Page 16: Cross-Sectional View
CROSS-SECTIONAL VIEW 4004M001AA 1. IR Section 5. Imaging Unit 2. Exit Section 6. LED Drive 3. Fusing Section 7. Drawers 4. Transfer Belt Unit...
Page 17: Copy Process
COPY PROCESS 3. Photoelectric Conversion 17. Paper Exit 16. Fusing 12. Paper 4. IR Image Processing Separation 13. Transfer Belt 10. 1st Image Transfer 11. 2nd Image Cleaning Transfer 14. Main Erase 7. Developing 15. PC Drum PC Drum Cleaning 2.
Page 18 8. Paper Feeding • Paper is fed from each drawer. 9. Manual Bypass • Paper is fed from the Manual Bypass Table. 10. 1st Image Transfer • A DC positive voltage is applied to the backside of the Transfer Belt so that the visible, developed image formed on each of the four PC Drums (Y, M, C, and Bk) is transferred to the surface of the Transfer Belt.
Page 19: Drive System
DRIVE SYSTEM 4004M521AA 1. Toner Replenishing Motor Y/M (M10) 7. Toner Replenishing Motor C/Bk (M9) 2. 1st Image Transfer Pressure/Retraction 8. Main Motor (M13) Motor (M11) 9. Imaging Unit Motor Bk (M18) 3. Scanner Motor (M1) 10. Imaging Unit Motor C (M17) 4.
Page 20: Operating Sequence
OPERATING SEQUENCE • When Power Switch is Turned ON Power Switch ON Full-speed rotation In synchronism with the timing Temperature Half-speed rotation at which Scanner Motor is energized control Power Supply Cooling Fan Motor (M21) Ozone Ventilation Fan Motor (M22) Fusing Cooling Fan Motor 1 (M23) Fusing Cooling Fan Motor 2 (M24) Original Glass Cooling...
Page 21 • When Start key is Turned ON Start key ON Half-speed rotation Full-speed rotation End of job Power Supply Cooling Fan Motor (M21) Ozone Ventilation Fan Motor (M22) Fusing Cooling Fan Motor 1 (M23) Fusing Cooling Fan Motor 2 (M24) Original Glass Cooling Fan Motor (M2) IR Cooling Fan Motor 1 (M3)
Page 22: Control Block Diagram
CONTROL BLOCK DIAGRAM Control Panel AFR-16 (UN1) Scanner Motor Image Processing DC Power Sup- Drive Board Board (PWB-C) ply 2 (PU2) (PWB-IC) Flat Cable IR PRIF Board CCD Sensor (PWB-D) Board (PWB-A) Scanner Exposure Lamp Motor (LA1) (M1) Engine Controller I/F Controller PIC Board (PWB-PIC) MSC Board...
Page 23: Locations Of Terminals
LOCATIONS OF TERMINALS • Inside the Copier (under LED Unit) PC Drum Charge Output: Bk, C, M, and Y from left to right Developing Bias: Y, M, C, and Bk from left to right Grid Voltage: Y, M, C, and Bk from left to right ATDC Bias 4004M579AA...
Page 24 • LED Unit Front PC Drum Charge Output: Y, M, C, and Bk from right to left 4004M582AA Developing Bias: Grid Voltage: Y, M, Y, M, C, and Bk C, and Bk from from right to left right to left •...
Page 25: Image Stabilization System
IMAGE STABILIZATION SYSTEM • The copier provides the image stabilization control as detailed below to ensure stabilized copy image. Purpose Means Control (Sensor) • To stabilize • Background margin control • AIDC Sensor image density • AIDC intensity control • Temperature/Humidity •...
Page 26: Aidc Detection
7-1. AIDC Detection • Patterns are produced on the Transfer Belt and AIDC Sensors detect the amount of toner sticking to the patterns. Intensity of Light Amount of Toner Sticking Output Reflected Large Small Small High Great 1. The light-emitting diode emits infrared rays illuminating the toner pattern on the Trans- fer Belt.
Page 27: Image Stabilization System Control
7-2. Image Stabilization System Control • The copier uses the data obtained through AIDC detection to perform various operations, thereby finding the optimum γ correction exposure curve for image stabilization control. Sensitometry ID (Image Density) Reversal Developing Image Density Characteristics Characteristics Image Input Transfer Belt...
Page 28 • During • Multi-print cycle 2 automatic adjustment (1) AIDC intensity (1) AIDC intensity control control (2) Background (2) Background margin control margin control (3) Max. density control 2 correction control correction control Test pattern print CCD reading Another correction 4004M080CA ✽...
Page 29: Aidc Sensor Led Intensity Control
AIDC Sensor LED Intensity Control • Controls changes in characteristics due to change with time and contamination of the AIDC Sensor, and part-to-part variations in the sensors, and change of environment. Control Provided: 1. Adjusts the intensity (current value) of the LED on the surface of the Transfer Belt, on which no toner sticks.
Page 30: Pc Drum
PC DRUM 8-1. PC Drum Drive Mechanism • A motor is used to turn the PC Drum of each color. • It is a planet motor capable of transmitting highly accurate drive and preventing pitch noise. • The motor employs planet rollers that transmit drive through friction to decelerate its speed, which means that it produces no noise or uneven rotation.
Page 31: Pc Drum Charge Corona
PC DRUM CHARGE CORONA • The PC Drum Charge Corona generates corona emission to deposit a charge evenly across the surface of the PC Drum through a grid mesh. • It has a comb electrode, which ensures that a charge is concentrated on the grid mesh, thus reducing the amount of ozone produced.
Page 32: Image Reader (Ir) Section
10. IMAGE READER (IR) SECTION 4004M005AA 1. Original Cover Detecting Sensor PC25 11. Scanner Home Sensor PC24 2. Original Glass Cooling Fan Motor M2 12. Size Reset Switch S10 3. Original Size Detecting Sensor FD1 13. Image Processing Board PWB-C PC30 14.
Page 33 10-1. 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) 7. Image Data Editing 8. AE Processing 10. Color Correction (Reflection/Density 9. Image Area Discrimination Conversion, Masking, UCR/BP) 11.
Page 34 1. Photoelectric Conversion • 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 con- vert the optical data into a corresponding analog electric signal. •...
Page 35 5. Zoom/Movement Processing • The image is edited according to the editing features selected on the control panel (enlargement/reduction, Image Monitor) • Two memories (FIFOs) are used to edit the image as required. Output Input FIFO FIFO (Read) (Write) Zoom •...
Page 36 6. Histogram Making • The scanning area is divided into multiple blocks. • The image data of the original (excluding the edges) is sampled during the prescan after the shading correction. • A histogram is then generated of lightness by saturation. •...
Page 37 8. AE Processing Histogram Making • Lightness data readings are tallied up for each four gradation levels using the image data sampled through “Histogram Making.” • The lightness data readings tallied up for each four gradation levels are totaled to gener- ate one lightness histogram (for AE processing).
Page 38 9. Image Area Discrimination • The image areas (color edge area, black edge area, dot area, continuous gradation area) are discriminated to optimize edge emphasis, smoothing and other processing just right for the image. • Either edge emphasis or smoothing is selected according to the results of image area discrimination.
Page 39 10. Color Correction 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 1144M178CA...
Page 40 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 41 Edge Expansion • Edge emphasis produces a difference in contrast between the edge and center of text. This processing expands edges toward the inner side and identifies them as a new edge. 4004M524AA Smoothing • The noise components contained in the image data are removed to smooth the data. Noise 1144G05MBA Density Adjustment and Color Balance...
Page 42: 10-2.Ccd Sensor
10-2. 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 given clearance from the adjacent chip and provided with a color filter. •...
Page 43: 10-3.Exposure Components Section
10-3. Exposure Components Section 1. Exposure Lamp • Exposure Lamp uses a DC power supply to emit an even amount of light. • A halogen frost lamp is used. 2. Main and Auxiliary Reflectors • The Main and Auxiliary Reflectors are laid out to correct any deviation in condensing of the Exposure Lamp light that may result from Exposure Lamp positioned eccentrically or improperly.
Page 44 10-4. Exposure Lamp Control • The Exposure Lamp is turned ON and OFF by the Scan Start Timing signal (PRE-TRIG) and Image Request signal (I-REQ) fed from the Master Board and the Lamp ON signal (LMPON) and Sub-Scanning Area signal (VD) from the Image Processing Board. Control Signal WIRING DIAGRAM PRE-TRIG (PWB-I PJ18I-6A)
Page 45: 10-5.Scanner And 2Nd/3Rd Mirrors Carriage Movement
10-5. Scanner and 2nd/3rd Mirrors Carriage Movement Mechanism Scanner Movement Mechanism • The Scanner moves at a speed according to the set zoom ratio with reference to that in the full size mode. It is driven by the Scanner Motor. •...
Page 46: 10-6.Scanner Motor Drive Control
10-6. Scanner Motor Drive Control • The speed at which the Scanner travels is controlled by varying the cycle of the motor drive pulse that is timed with the reference clock. High Speed Low Speed Cycle • The distance over which the Scanner travels is controlled by the number of motor drive pulses which is determined according to the paper size and zoom ratio.
Page 47: Original Size Detecting Section
11. ORIGINAL SIZE DETECTING SECTION • Original Size Detecting Sensors are provided for detecting the size of the original. Rear Front 4004M519AA 1. Original Cover Detecting Sensor (PC25) 5. Size Reset Switch (SW10) 2. Original Size Detecting Sensor FD1 6. Original Size Detecting Sensor CD2* (PC30) (PC34) 3.
Page 48 11-2. Locations of Original Size Detecting Sensors • The Original Size Detecting Sensors are located at the following places so that various original sizes can be detected properly. • Mounting optional Original Size Detecting Sensors will increase the number of original sizes to be detected.
Page 49: 11-3.Determining The Original Size
11-3. Determining the Original Size • The Image Processing Board determines the size of the original by the combination of the original statuses, whether there is an original or not, determined by each of the Origi- nal Size Detecting Sensors. •...
Page 50 ✽ Inch Area - Standard Original Size 11 × 17 8.5 × 14 8.5 × 11 11 × 8.5 G: Original present -: Original not present • When optional sensors are mounted (optional) (optional) (optional) Original Size 11 × 17 8.5 ×...
Page 51: 11-4.Original Size Detection Timing
11-4. Original Size Detection Timing 1. Original size detection : When the Original Cover is raised to an angle of 15° or more (Original Cover Detecting Sensor is unblocked). 2. Original size validation : When the Original Cover is lowered to an angle of less than 15°...
Page 52: Printer Section
12. PRINTER SECTION • The printer section makes necessary corrections of the image data output from the IR. • The light from the LED illuminates the surface of the PC Drum to form an electrostatic latent image. 4004M001AA PC Drum 4004M006AA LED Array M-37...
Page 53: 12-1.Printer Section Image Processing Block Diagram
12-1. Printer Section Image Processing Block Diagram Image Data PIC Board 1. Image Bus Selector 2. GBTC Compression 3. Input Buffer Memory 5. Frame Memory 4. Memory Access Coordinator Standard memory: 48MB Expanded memory: 256MB (15-cpm copier: option; 6. Output Buffer Memory 20-cpm copier: standard) 7.
Page 54 1. Image Bus Selector • Chooses between the image data from the Scanner and that from the printer controller. 2. GBTC (General Block Truncation Coding) Compression • Compresses the Y, M, C, and Bk image data (8 bits, 256 gradation levels, 4 colors) to reduce its volume.
Page 55 10. 1,800-dpi Color Shift/Skew Correction • Corrects skew in the print position to ensure alignment in the main scanning direction between each of the Y, M, C, and Bk LED assemblies and PC Drums. • The maximum unit of correction is 1,800 dpi. 11.
Page 56 12. Interpolation • Provided for the PIC Board and used when resolution is changed from 600 dpi to 1,800 dpi. • Applicable only for continuous gradation areas. • Converts the resolution of a target pixel. At this time, correction is made using the target pixel and the ones adjacent to it in the sub-scanning direction.
Page 57: Imaging Unit
13. IMAGING UNIT • The Imaging Unit carries out development process by allowing toner to stick to the elec- trostatic latent image formed on the surface of the PC Drum. Imaging Unit Motor Y/M/C/Bk (M15/16/17/18) Sleeve/Magnet Roller PC Drum Developing Clutch Y/M/C/Bk (CL11/12/13/14) 4004M007AB EEPROM Board 2...
Page 58: 13-1.Control Of Detection Of New Imaging Unit
13-1. Control of Detection of New Imaging Unit Each Imaging Unit is provided with EEPROM Board 2 that detects whether a new Imaging Unit is installed. Power Switch is turned ON New Imaging Unit Detection Timing Front Door is closed Operations when no new Imaging Units are detected: Transfer Roller Transfer Belt...
Page 59: 13-4.Doctor Blade
• Developer Flow 1. Toner is supplied from the Hopper. 2. Toner is fed to the lower conveying coil. 3. Toner is fed on to the rear of the unit, while being mixed with developer and triboelectri- cally charged. 4. The ATDC Sensor installed on the underside of the Developing Unit detects toner-to- carrier ratio during this time.
Page 60 13-3. Sleeve/Magnet Roller • The magnet roller having magnetic characteristics and the sleeve roller that rotates on the magnet roller work together to convey developer to the point of development. • The magnetic force of the magnet roller is the strongest at the point of development so that the developer brush stands straight up to deliver the greatest amount of toner to the PC Drum.
Page 61: 13-5.Developing Bias And Atdc Bias
13-5. Developing Bias and ATDC Bias 1. Developing Bias • The developing bias (Vb) is applied to the Sleeve/Magnet Roller to ensure that an ade- quate amount of toner is attracted to the PC Drum. • It is applied through the bias contact via the Doctor Blade to prevent current leak. •...
Page 62: 13-6.Atdc Sensor
13-6. ATDC Sensor ATDC Sensor (Y, M, C) • The ATDC Sensor for Y, M, and C is an optical type that detects toner-to-carrier ratio (T/ C) of the developer. • A DC(-) bias is applied to the ATDC Sensor window to prevent false detection as a result of toner sticking to it.
Page 63: 13-7.Toner Replenishing Control
13-7. Toner Replenishing Control • The T/C ratio is detected when Developing Clutch C, M, Y, or Bk is energized (during a copy cycle). • The detection time varies with the system speed. • The copier compares the T/C reading against “ATDC Level Setting” of “Tech. Rep. Mode”...
Page 64: Toner Hopper
14. TONER HOPPER Toner Replenishing Motor C/Bk (M9) Toner Empty Switch (SW5 to SW8) Toner Replenishing Motor Y/M (M10) 4004M016AA Storage Section Agitating Section, Empty Detector Metering Section 4004M017AA M-49...
Page 65: 14-1.Toner Replenishing Mechanism
14-1. Toner Replenishing Mechanism • Toner is supplied from the Hopper to the Imaging Unit. • A single Toner Replenishing Motor is used to replenish two different colors of toner (i.e., one motor for Y and M and the other motor for C and Bk). Toner Replenishing Motor Y/M (M10) Toner Replenishing Motor C/Bk (M9) One-Way Clutch...
Page 66 1. The Toner Replenishing Motor turns the Agitating Coils inside the Toner Hopper. 2. The Metering Chamber provided at the Toner Supply Port controls the amount of toner supplied. The amount is controlled by varying the period of time through which the Metering Roller turns.
Page 67: 14-2.Toner Empty Detection Control
14-2. Toner Empty Detection Control • A toner-empty condition is detected by the Toner Empty Switch. • Whether the Toner Empty Switch is actuated or deactuated is detected while the Toner Replenishing Motor turns one complete turn. • A toner-near-empty condition results if the Toner Empty Switch is actuated a predeter- mined number of times after it has been actuated twice consecutively.
Page 68: Paper Take-Up Section
15. PAPER TAKE-UP SECTION NOTE • For details of the 2nd Drawer (optional paper source), see the relevant option service manual. Paper Size Detecting Edge Guide Board (PWB-I1) Paper Take-Up Roll Trailing Edge Stop 4004M024AA 15-1. Drawer-in-Position Detecting Mechanism • When the drawer is slid into the copier, the Light Blocking Plate blocks the Set Sensor. The copier then determines that the drawer has been slid in position.
Page 69: 15-2.Drawer Paper Empty Detecting Mechanism
15-2. Drawer Paper Empty Detecting Mechanism • The Paper Empty Sensor is used to detect a paper-empty condition of the drawer. 1st Drawer Paper Empty Sensor (PC6) 4004M026AA Paper Empty Lever Controlled Part Control Signal Blocked Unblocked WIRING DIAGRAM PJ3I-8A 15-3.
Page 70: 15-4.Paper Supply Level Led Display
15-4. Paper Supply Level LED Display • The paper supply level is indicated by a lit, blinking, or OFF LED as detailed below. • Details are as follows. Item When drawer is slid out Paper empty Paper near empty Blinking Normal supply level Plain Thick 1...
Page 71 15-5. Paper Size Detecting System • The width (CD) and length (FD) of the paper are detected. The copier determines the paper size according to the combination of the different states of the paper size detecting switches and sensor. • Metric Area Paper Size Detecting Switch (PWB-I1) CD Paper Size Detecting...
Page 72 Paper Size Detecting Board (PWB-I1) Trailing Edge Stop 4004M028AA Controlled Part Control Signal WIRING DIAGRAM PWB-I1(1) PJ17I-4B PWB-I1(2) PJ17I-5B PWB-I1(3) PJ17I-6B PWB-I1(4) PJ17I-7B Controlled Part Control Signal Blocked Unblocked WIRING DIAGRAM PJ3I-11A M-57...
Page 73: 15-6.Paper Type Setting
15-6. Paper Type Setting • The type of paper is set by the Paper Type Setting Dial. • It ensures that paper is fed through the copier at a system speed corresponding to the paper type. Paper Type Setting Dial Paper Type System Speed Plain...
Page 74: 15-7.Drawer Paper Take-Up Mechanism
15-7. Drawer Paper Take-Up Mechanism • Paper take-up drive is provided by a motor through the Paper Take-Up Clutch. • A Paper Separator Roll is used to prevent double feed. Main Motor (M13) Paper Separator 1st Drawer Paper Roll Take-Up Clutch (CL1) 4004M031AA 4004M601AA Start key ON...
Page 75: 15-8.Double Feed Control
15-8. Double Feed Control • Double feed control is provided to reduce paper misfeed caused by double feed. • If the second sheet of paper reaches the Double Feed Sensor after the first one has been taken up, the copier delays the paper take-up sequence to provide an adequate interval between the sheets of paper.
Page 76: Manual Bypass Paper Take-Up Section
16. MANUAL BYPASS PAPER TAKE-UP SECTION • Manual bypass paper take-up drive is provided by a motor through the Manual Feed Paper Take-Up Clutch. Main Motor (M13) Manual Feed Paper Take-Up Clutch (CL3) Manual Bypass Paper Take-Up Roll Manual Feed Paper Take- Up Sensor (PC15) 4004M030AA Paper loaded...
Page 77: 16-1.Manual Bypass Paper Take-Up Detecting Mechanism
16-1. Manual Bypass Paper Take-Up Detecting Mechanism • The Manual Feed Paper Take-Up Sensor detects a sheet of paper as it is placed on the Manual Bypass Table. • The size and type of paper for manual bypass is set on the control panel. Manual Feed Paper Take-Up Sensor (PC15) 1167M086AA...
Page 78: Synchronizing Rollers
17. SYNCHRONIZING ROLLERS • The Synchronizing Rollers synchronizes the image transfer section (2nd image transfer) with the paper transport (paper). Synchronizing Roller 1171M029AA 17-1. Paper Dust Remover • Through static attraction, paper dust is attracted onto the surface of the driven Synchro- nizing Roller and the Paper Dust Remover removes paper dust from the roller.
Page 79: 17-2.Synchronizing Roller Drive Mechanism
17-2. Synchronizing Roller Drive Mechanism • The Synchronizing Roller is driven by a motor through a clutch. Synchronizing Roller Clutch (CL21) Synchronizing Rollers Main Motor (M13) 4004M032AA Start key ON Synchronizing Roller Synchronizing Roller Start signal Start signal Main Motor (M13) Synchronizing Roller Sensor (PC17) Synchronizing Roller...
Page 80: 17-3.Ohp Detecting Mechanism
17-3. OHP Detecting Mechanism • OHP detection determines whether the paper type setting matches the results of OHP detection. • The OHP Detecting Sensor performs this function. • OHP detection is made after a loop has been formed in the paper before the Synchroniz- ing Rollers.
Page 81: Image Transfer Section
18. IMAGE TRANSFER SECTION 1. 1st Image Transfer • In the 1st image transfer stage, image transfer current from High Voltage Unit 2 is applied to the 1st Image Transfer Roller for each color to transfer the toner images pro- duced by the Imaging Units onto the Transfer Belt, one image on top of another in the order of Y, M, C, and Bk.
Page 82: 18-1.Transfer Belt Unit Drive Mechanism
18-1. Transfer Belt Unit Drive Mechanism • The Transfer Belt Unit is driven by the Main Motor. • The speed at which the Transfer Belt turns is selected according to the type of paper as detailed below. Paper Type During Copying Plain paper 90 mm/s Thick paper 1, thick paper 2, OHP...
Page 83: 18-2.Color Shift Detection
18-2. Color Shift Detection • Patterns are produced on the surface of the Transfer Belt and the Registration Sensors detect any color misalignment on the patterns. 1. A light-emitting diode emits infrared rays illuminating the color shift pattern on the Transfer Belt.
Page 84: 18-3.Color Shift Correction
18-3. Color Shift Correction • In a tandem engine provided with a separate image reproduction process for each of the four different colors of toner, incorrect color registration, or color shift, is more likely to occur due to positional deviations among different LED Units. Any misalignment among different colors is automatically detected and corrected both in the main scanning and sub-scanning directions.
Page 85: 18-4.1St Image Transfer Roller Pressure/Retraction Mechanism
18-4. 1st Image Transfer Roller Pressure/Retraction Mechanism • The Sliding Plates press the 1st Image Transfer Rollers against, and retract them from, the corresponding PC Drums. • The drive for these operations comes from a motor dedicated to the purpose. •...
Page 86 • Transfer Belt Pressure/Retraction Operation 1. Drive from the 1st Image Transfer Pressure/Retraction Motor turns the cam. 2. The Sliding Plates move. 3. The 1st Image Transfer Roller Pressure/Retraction Lever moves. 4. The 1st Image Transfer Rollers are pressed against, or retracted from, the Transfer Belt.
Page 87: 18-5.Pressure Position Changing Mechanism
18-5. Pressure Position Changing Mechanism • The pressure position of the Y, M, and C Image Transfer Rollers is made different from that of the Bk Image Transfer Roller in the monochrome mode by changing the pulse count of the 1st Image Transfer Pressure/Retraction Motor. •...
Page 88: 18-6.Retraction Mechanism
18-6. Retraction Mechanism • The Transfer Belt face is changed between the color mode and monochrome mode. • To accomplish this, the pressure position is changed. • The pressure position is changed between the color mode and monochrome mode by changing the cam position, which moves the Retraction Roller up or down.
Page 89: 18-7.Backup Mechanism
18-7. Backup Mechanism • The Lifting Mylar pushes the Transfer Belt in the pressed position of the monochrome mode. • This ensures that the Bk PC Drum makes contact with the Transfer Belt in the same manner as in the color mode. •...
Page 90: 18-8.2Nd Image Transfer Roller Pressure/Retraction Mechanism
18-8. 2nd Image Transfer Roller Pressure/Retraction Mechanism • The 2nd Image Transfer Roller is pressed against, and retracted from, the Transfer Belt by a clutch. • The pressed position is detected by the 2nd Image Transfer Pressure Position Sensor. • The retracted position is where the cam turns a half turn with the clutch energized. 2nd Image Transfer Pressure/Retraction Clutch (CL15) 2nd Image Transfer Pressure Position Sensor (PC23)
Page 91: 18-9.Aidc Sensor Shutter Mechanism
18-9. AIDC Sensor Shutter Mechanism • In the 2nd image transfer stage, the shutter is moved to cover the AIDC Sensors to pre- vent them from being dirtied with toner. • The shutter operation is in synchronism with the pressure and retraction motion of the 2nd Image Transfer Roller.
Page 92: 18-10.Paper Charge Neutralization
18-10. Paper Charge Neutralization • A Charge Neutralizing Cloth is used to neutralize any residual charge left on the paper which has undergone the 2nd image transfer stage. • The Charge Neutralizing Cloth is floated under conditions of high temperature and high humidity to prevent image transfer failure from occurring due to damp paper.
Page 93: 18-12.Transfer Belt Cleaning Mechanism
18-12. Transfer Belt Cleaning Mechanism • The Cleaning Blade scrapes any residual toner off the surface of the Transfer Belt. • The Transfer Belt is turned backward to remove paper dust wedged between the Clean- ing Blade and Transfer Belt. When Power Switch is turned ON Operation Timing For every 100 copies made...
Page 94: 18-14.Waste Toner Collecting Mechanism
18-14. Waste Toner Collecting Mechanism • Toner on the Transfer Belt is collected in the Toner Collecting Bottle. • Waste toner that overflows from the Waste Toner Tank of the Imaging Unit is collected. • The Conveying Coil is turned by the drive from the Main Motor. Waste Toner Conveying Coil for Imaging Unit Toner Collecting...
Page 95 18-15. Waste Toner Near Full and Full Detecting Mechanism • Waste toner near full and full conditions are detected. Waste Toner Full Detecting Sensor (PC29) Toner Collecting Bottle 4004M057AA 1. Waste Toner Near Full • The Waste Toner Full Detecting Sensor is used to detect a waste toner near full condi- tion.
Page 96 2. Waste Toner Full • When a given number of copies are made after the waste toner near full condition has been detected, a waste toner full condition results and the copier inhibits the initiation of a new copy cycle. A predetermined number of copies About 4,500 copies using A4 paper •...
Page 97: 18-16.Image Transfer Atvc Control
18-16. Image Transfer ATVC Control • The copier measures resistance of the Transfer Belt and adjusts the 1st and 2nd image transfer output voltages so that the values of current that flows from the 1st and 2nd Image Transfer Rollers are optimized. •...
Page 98 • Outline of Adjustment Operations Constant Voltage Constant Measure Constant Current Resistance Value Current 1st Image Transfer Roller Transfer Belt PC Drum Ground 2nd Image Transfer Roller Transfer Belt Transfer Belt Drive Roller Transfer Belt Unit 2nd Image Transfer Feedback Terminal 4004M078CB M-83...
Page 99: 18-17.Detection Of A New Transfer Belt Unit
18-17. Detection of a New Transfer Belt Unit • A new Transfer Belt Unit is detected when it is mounted. New Unit Detection Timing Power Switch is turned ON. Transfer Belt Unit Front Door is opened and closed. Right Door is opened and closed. •...
Page 100: Pc Drum Cleaning Unit
20. PC DRUM CLEANING UNIT 20-1. Cleaning Mechanism • The Cleaning Blade scrapes residual toner off the surface of the PC Drum. Cleaning Blade Imaging Unit PC Drum 4004M046AA 4004M045AA M-85...
Page 101: Fusing Section
21. FUSING SECTION • Toner is permanently fixed onto the paper by heat and pressure applied by the Fusing Belt and Lower Fusing Roller. 4004M047AA 1. Web Take-Up Roller 10. Upper Fusing Roller 2. Backup Roller 11. Fusing Belt 3. Web 12.
Page 102: 21-1.Fusing Section Drive Mechanism
21-1. Fusing Section Drive Mechanism • The fusing section is driven by a motor. Fusing Drive Motor (M14) Fusing Belt Heating Roller 4004M048AB Controlled Part Control Signal Energized Deenergized WIRING DIAGRAM PJ13I-2A 21-2. Fusing Speed Control • The fusing speed is changed according to the paper type. Paper Type During a Copy Cycle Plain paper...
Page 103: 21-3.Fusing Roller Stabilized Rotation Control
21-3. Fusing Roller Stabilized Rotation Control • The copier provides Fusing Roller stabilized rotation control when a copy cycle is initi- ated. • To enhance fusing performance, the fusing speed set according to the paper type is cor- rected to a stabilized one. •...
Page 104: 21-4.Lower Fusing Roller Pressure/Retraction Mechanism
21-4. Lower Fusing Roller Pressure/Retraction Mechanism • To extend the service life of the Fusing Belt, the Lower Fusing Roller is retracted from the Fusing Belt at any time except during a copy cycle or when there is a paper misfeed. •...
Page 105 Fusing Pressure/Retraction Motor (M8) Lower Fusing Roller Sector Gears Fusing Retraction Position Sensor (PC8) 4004M050AB Fusing Pressure Position Sensor When Pressed When Retracted Sector Gear Lower Fusing 4004M051AB 4004M564AA Roller During During Controlled Part Control Signal pressure retraction WIRING DIAGRAM operation operation PJ14A-4A...
Page 106: 21-5.Fusing Unit Cleaning Mechanism
21-5. Fusing Unit Cleaning Mechanism Fusing Oil Application Mechanism • Oil is applied to the Fusing Belt to prevent offset and ensure better paper separation. • Toner sticking to the Fusing Belt is removed with the Web by way of the Oil Donor Roller. Backup Roller Oil Donor Roller 4004M047AA...
Page 107: Web Take-Up Mechanism
Web Take-Up Mechanism • Oil is applied from the Web to the Oil Donor Roller. • The Web is taken up by a motor. • The Cleaning Web Drive Motor controls the amount of web taken up. Web Take-Up Amount 0.125 mm per sec.
Page 108: 21-7.New Fusing-Related Parts Detection
21-6. Fusing Web Near Empty and Empty Detection 1. Fusing Web Near Empty • A web near-empty condition is detected if either of the following two events, whichever occurs earlier, occurs. “Life” of “Tech. Rep. Mode”: “Fusing Web Unit” counter reads 16,000. Detection Timing Detected by the Near-Empty Lever (See below.) •...
Page 109: 21-8.Fusing Temperature Control
21-8. Fusing Temperature Control • Heater lamps are turned ON and OFF to keep the surface temperatures of the Heating Roller and Fusing Roller at predetermined levels. • The surface temperatures of the Heating Roller and Lower Fusing Roller are detected by thermistors that convert temperatures to corresponding electrical signals.
Page 110 Power Switch ON Warm-up completed Heating Roller Heater Lamp 1 ON Lower Fusing Roller Heater Lamp OFF Heating Roller Heater Lamp 1 OFF Lower Fusing Roller Heater Lamp ON Heating Roller Heater Lamp 1 ON Lower Fusing Roller Heater Start key ON Canceled Lamp OFF During a...
Page 111: Other Mechanisms
22. OTHER MECHANISMS 22-1. Memory Backup • IC5 (RAM) connected to the MSC Board stores the settings and adjustments made, and counter values entered using the Tech. Rep. Mode. • IC5 (RAM) has a built-in backup memory. NOTE • When the MSC Board is to be replaced with a new one, use care not to replace IC5 (RAM) together with the board.
Page 112: 22-3.Expanded Memory
22-3. Expanded Memory • Expanded memory of 256 MB (128 MB ×2) is made optionally available. 15-cpm copier Option 20-cpm copier Standard • Mounting the expanded memory permits the following control. 2-sided copying 2in1 copying Expanded Memory (HSD-IDN) PIC Board (PWB-PIC) 4004M60AA M-97...
Page 113: 22-4.Temperature/Humidity Sensor
22-4. Temperature/Humidity Sensor • The Temperature/Humidity Sensor detects temperature and humidity inside the copier. Temperature data Thermistor Humidity data Humidity Sensor UN23 Master Board (PWB-I) 4004M079CA Temperature/Humidity Sensor (UN23) 4004M588AA M-98...
Page 114: 22-5.Copier Interior Cooling Mechanism
22-5. Copier Interior Cooling Mechanism IR Section Cooling Mechanism • Fan motors draw air from the outside into the inside of the copier to cool the IR section (Original Glass, CCD Sensor, Image Processing Board, etc.). Original Glass Cooling Fan Motor (M2) IR Cooling Fan Motor 2 (M4) IR Cooling Fan Motor 1 (M3) 4004M054AA...
Page 115: Power Supply Section Cooling Mechanism
Power Supply Section Cooling Mechanism • A fan motor draws air from the area around the Power Supply Unit to the outside to pre- vent the Power Supply Unit temperature from running high. Power Supply Cooling Fan Motor (M21) 4004M054AA Controlled Part Control Signal Full Speed...
Page 116 Copyright 2000 MINOLTA Co., Ltd. Printed in Japan Use of this manual should be strictly supervised to avoid disclosure of confidential information. MINOLTA Co., Ltd. 4004-7990-11 00121200 10794...
Page 117 CF1501/CF2001 SERVICE MANUAL FIELD SERVICE...
Page 118 INDEX (FIELD SERVICE) DIS/REASSEMBLY, ADJUSTMENT SWITCHES ON PWBs, TECH. REP. SETTINGS...
Page 119 Safety Precautions for Inspection and Service When performing inspection and service procedures, observe the following precautions to prevent accidents and ensure utmost safety. ✽ Depending on the model, some of the precautions given in the following do not apply. 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 120 4. Handle the power cord with care and never use a multiple outlet. • Do not break, 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 121 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 122 5. Precautions for the Laser Beam (Only for Products Employing a Laser) • 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 123 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 VORSICHT! Explosionsgefahr bei unsachgemäßem Austausch der Batterie. Ersatz nur durch denselben oder einen vom Hersteller empfohlenen ähnlichen Typ.
Page 124 Precautions for Service When performing inspection and service procedures, observe the following precautions to prevent mishandling of the machine and its parts. ✽ Depending on the model, some of the precautions given in the following do not apply. Precautions Before Service •...
Page 125 Precautions for Dis/Reassembly • Be sure to unplug the copier from the outlet before attempting to service the copier. • The basic rule is not to operate the copier anytime during disassembly. If it is absolutely necessary to run the copier with its covers removed, use care not to allow your clothing to be caught in revolving parts such as the timing belt and gears.
Page 126 Handling of PWBs 1. During Transportation/Storage: • During transportation or when in storage, new P.W. Boards must not be indiscriminately removed from their protective conductive bags. • Do not store or place P.W. Boards in a location exposed to direct sunlight and high tem- perature.
Page 127 Handling of the PC Drum ✽ Only for Products Not Employing an Imaging Cartridge. 1. During Transportation/Storage: • Use the specified carton whenever moving or storing the PC Drum. • The storage temperature is in the range between –20°C and +40°C. •...
Page 128 3. Soak a small amount of either ethyl alcohol or iso- propyl alcohol into a clean, unused Dust-Free Cot- ton Pad which has been folded over into quarters. Now, wipe the surface of the PC Drum in one con- tinuous movement from its rear edge to its front edge and off its surface one to two times.
Page 129 DIS/REASSEMBLY, ADJUSTMENT 18605...
Page 130 CONTENTS 1. SERVICE INSTRUCTIONS ................D-1 1-1. IDENTIFICATION OF FUSES ..............D-1 1-2. PARTS WHICH MUST NOT BE TOUCHED ........... D-2 (1) Red Painted Screws ................ D-2 (2) Variable Resistors on Board ............D-2 2. DISASSEMBLY/REASSEMBLY ..............D-3 2-1. DOORS, COVERS, AND EXTERIOR PARTS: IDENTIFICATION AND REMOVAL PROCEDURES .......
Page 131 (4) Cleaning of the Paper Dust Remover ..........D-39 (5) Cleaning of the Transfer Belt Unit ........... D-39 (6) Cleaning of the LED ................ D-40 (7) Cleaning of the Area around the Waste Toner Collecting Port ..D-40 (8) Cleaning of the Fusing Entrance Guide Plate ......... D-41 (9) Removal of the Imaging Unit Motor C/M/Y/Bk .........
Page 132 (50) Removal of the Toner Empty Switch (Y/M/C/Bk) ......D-63 3. ADJUSTMENTS ....................D-64 3-1. ADJUSTMENT JIGS AND TOOLS USED ..........D-64 3-2. ADJUSTMENT REQUIREMENTS LIST ..........D-65 3-3. ADJUSTMENT OF SWITCHES ............... D-66 (1) Microswitches .................. D-66 3-4. ADJUSTMENT OF BELT TENSION ............D-67 (1) Adjustment of the Scanner Motor Timing Belt .........
Page 133: Service Instructions
SERVICE INSTRUCTIONS 1-1. IDENTIFICATION OF FUSES DC Power Supply 2 PU2 250 V 3 A (F1) 4004D100AB DC Power Supply 1 PU1 125 V 15 A (F1) 4004D101AB 120 V 10 A (F2) 125 V 15 A (F3) 125 V 15 A (F4)
Page 134: Parts Which Must Not Be Touched
1-2. PARTS WHICH MUST NOT BE TOUCHED 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 should not be adjusted, set, or removed in the field. •...
Page 135: Disassembly/Reassembly
DISASSEMBLY/REASSEMBLY 2-1. DOORS, COVERS, AND EXTERIOR PARTS: IDENTIFICATION AND REMOVAL PROCEDURES 4004D102AA 4004D103AA Printer 4004D104AA 4004D105AA...
Page 136 Name Removal Procedure Original Glass Remove the IR Right Cover. → Remove the IR Rear Cover. → Remove one screw and the Original Glass fixing brackets (front and rear). → Remove the Original Glass. IR Right Cover Remove two screws and the IR Right Cover. Control Panel Remove two covers below the Control Panel.
Page 137: 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 “Handling of PWBs” and follow the corresponding 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 138: Removal Of The Ccd Unit
Removal of the CCD Unit 1. Remove the IR Right Cover and Original Glass. 2. Remove eight screws and the optical cover. 4004D001AC 3. Remove three screws and the imaging process- ing lid on the right inside the IR. 4004D002AB 4.
Page 139 5. Remove four screws and the metal bracket on the upper right of the IR. 4004D004AA 6. Unplug eight connectors on the Image Process- ing Board. 4004D005AA 7. Remove three screws that secure the Image Pro- cessing Unit on the right. 4004D006AA 8.
Page 140 10. Remove two screws that secure the Image Pro- cessing Unit on the left. 4004D009AA 11. Remove the IR hookup cable. 4004D010AA Precautions for Removal/Reinstallation of the IR Hookup Cable • Be sure to hold onto the connector of the cable when removing or reinstalling the cable. NEVER pull on the cable.
Page 141: Removal Of The Ir Prif Board
14. Pull out the Image Processing Unit. 4004D013AA 15. Remove 11 screws and the Image Processing Board. 4004D014AA NOTE • At reinstallation, make sure that the Image Pro- cessing Board is properly connected to the IR PRIF Board. 4004D194AA Removal of the IR PRIF Board 1.
Page 142: Removal Of The Scanner Motor Drive Board
Removal of the Scanner Motor Drive Board 1. Remove the IR Right Cover, IR Rear Right Cover, IR Rear Upper Cover, and IR Rear Cover. 2. Remove two screws and the reinforcement frame. 4004D015AA 3. Unplug three connectors. 4. Remove one screw. Then, remove the Scanner Motor Drive Board from the PWB support.
Page 143: Removal Of Dc Power Supply 2
7. Remove one screw, unplug one connector, and remove the Flat Cable. 4004D019AA Removal of DC Power Supply 2 1. Remove the IR Rear Cover. 2. Remove two screws that secure the IR power receptacle. 4004D020AB 3. Remove six screws, two harness holders, and the DC Power Supply 2 cover.
Page 144 Printer PWB-I PWB-T PWB-PIC PWB-H PWB-I1 PWB-LK PWB-S PWB-N3 PWB-N2 4004D183AA PWB-N1 Symbol Name Removal Procedures Remove the Rear Cover. → Remove the Rear Left Cover. PWB-H MSC Board → Remove the PWB Shield Cover. → Unplug two connec- tors and remove four screws and the MSC Board. Remove the Paper Output Cover.
Page 145: Removal Of The Paper Size Detecting Board
Removal of the Paper Size Detecting Board 1. Remove High Voltage Unit 1 and 2. D-56 (steps 1 through 8) 2. Remove two screws, unplug one connector, and remove the Paper Size Detecting Board. 4004D184AB Removal of the LED Board and ATDC Sensors Y, M, and C NOTE •...
Page 146 NOTE • At reinstallation, ensure that the front hook makes positive engagement. 4004D197AA 5. Remove one screw and the holder. 4004D113AA 6. Remove four screws, unplug two connectors, and remove the LED Assy Bk. 4004D114AB ✽ Removal of the LED Assy C 7.
Page 147 NOTE • At reinstallation, ensure that the front hook makes positive engagement. 4004D197AA 9. Remove one screw and the holder. 4004D118AA 10. Remove four screws, unplug two connectors, and remove LED Assy C. 11. Following the same procedure as when removing LED Assy C, remove LED Assemblies M and Y.
Page 148: Maintenance Schedule
2-3. MAINTENANCE SCHEDULE • To ensure that the copier produces good copies and to extend its service life, it is recom- mended that the maintenance jobs described in this schedule be carried out as instructed. Maintenance Cycle Ref. Page Ref. Page in Unit PM Parts Parts No.
Page 149 ✽ 1: Replace the Transfer Belt Unit, Transfer Roller Unit, Paper Dust Remover, and Ozone Filter at the same time. ✽ 2: About 4.5 K after a waste toner near full condition has been detected. ✽ 3: Forced to a stop when 110 K is reached. ✽...
Page 150: Guidelines For Life Specifications Values By Unit
2-4. Guidelines for Life Specifications Values by Unit NOTES • The life specifications values represent the number of copies made or figures equivalent to it when given conditions are met. They can be more or less depending on the copier operating conditions of each individual user.
Page 151 ✽ 1: As a rule, the Fusing Unit is to be replaced at the same time that the Fusing Web Unit is replaced a sixth time (17 K × 6 = 102 K). If the Fusing Web Unit is replaced before 17 K is reached, there will be a discrepancy in the replacement cycle, resulting in a near life and life value ranging between 90 K and 110 K.
Page 152: Removal Of Units
2-5. Removal of Units • Note that replacement of a unit may call for recheck and readjustments of some items. Oil Cleaning Unit Fusing Web Unit Transfer Belt Unit Fusing Unit Imaging Unit LED Unit Hopper Unit 4004D182AA NOTE • For the removal of the Imaging Unit, Transfer Belt Unit, Fusing Unit, Fusing Web Unit, and Oil Coating Unit, see the Unit Replacement Manual.
Page 153: Removal Of The Toner Hopper Unit
Removal of the Toner Hopper Unit NOTE • Whenever the Imaging Unit has been slid out of the copier, be sure to cover it with the light blocking bag (black) or light blocking cloth for packing purposes and place it in a dark place.
Page 154: Removal Of The Led Unit
9. Unplug three connectors. 10. Remove five screws and the Toner Hopper Unit. 4004D046AB Removal of the LED Unit NOTE • Whenever the Imaging Unit has been slid out of the copier, be sure to cover it with the light blocking bag (black) or light blocking cloth for packing purposes and place it in a dark place.
Page 155 8. Unplug five connectors. 4004D048AB 9. Lock the Imaging Unit (C/M/Y/Bk) drive hub. NOTES • During the locking procedure, use care not to touch the LED surface. • Should the LED surface be touched, clean it with the LED Cleaning Jig. D-40 4004D024AA NOTE...
Page 156 Precaution for Reinstalling the LED Unit • The lever of the LED Unit must be fit into the space between the metal bracket in the rear of the copier and another lever as illustrated below. LED Unit Lever 4004D051AA Precaution for Replacement of the LED Unit •...
Page 157: Cleaning And Disassembly Of The Ir Unit
2-6. Cleaning and Disassembly of the IR Unit Cleaning of the Scanner Rails 1. Remove the IR Right Cover and Original Glass. 2. Using a soft cloth dampened with alcohol, wipe the Scanner Rails clean of dirt. NOTE • Lubricate the rails after cleaning. 4004D198AA Cleaning of the Mirrors (1st/2nd/3rd) 1.
Page 158: Cleaning Of The Original Glass
Cleaning of the Original Glass 1. Using a soft cloth dampened with alcohol, wipe the Lens clean of dirt. 4004D201AA Removal of the Original Glass Cooling Fan Motor 1. Remove the IR Rear Upper Cover and IR Rear Cover. 2. Unplug one connector and remove the harness from one wiring saddle.
Page 159: Removal Of Ir Cooling Fan Motor 2
5. Remove the tension spring for the Scanner Motor timing belt. 4004D028AA 6. Remove the harness from one cord clamp and one edge cover. 7. Remove three screws and the Scanner Motor Assy. 4004D029AD 8. Remove two screws and the Scanner Motor. 4004D030AA Removal of IR Cooling Fan Motor 2 1.
Page 160: Removal Of The Scanner Home Sensor
7. Remove four screws and the IR upper right metal bracket. 4004D004AA 8. Unplug one connector. 9. Remove two screws and IR Cooling Fan Motor 2. 4004D032AD Removal of IR Cooling Fan Motor 1 1. Remove the IR Right Cover and Original Glass. 2.
Page 161: Removal Of The Original Cover Detecting Sensor
(10) Removal of the Original Cover Detecting Sensor 1. Remove the IR Rear Upper Cover and IR Rear Cover. 2. Unplug one connector. 3. Remove one screw and the Original Cover Detecting Sensor Assy. 4004D037AA 4. Remove the sensor fixing bracket and the Origi- nal Cover Detecting Sensor.
Page 162: Removal Of Original Size Detecting Sensor Cd1
(12) Removal of Original Size Detecting Sensor CD1 1. Remove the IR Right Cover and Original Glass. 2. Unplug one connector. 3. Remove one screw and Original Size Detecting Sensor CD1. 4004D124AA (13) Removal of the Size Reset Switch 1. Remove the Control Panel and IR Front Cover. 2.
Page 163: Removal Of The Exposure Lamp
3. Take out the Scanner Assy by turning it in the direction of the arrow shown. NOTE • The Scanner Assy cannot be completely taken off the copier as a Flat Cable is still connected to it at this time. 4004D017AB 4.
Page 164: Removal Of The Scanner Drive Cables
4. Remove two screws and the Temperature Fuse. 4004D042AB (17) Removal of the Scanner Drive Cables 1. Remove the Control Panel. 2. Remove the IR Right Cover, IR Lower Front Cover, IR Rear Upper Cover, and IR Rear Cover. 3. Remove the Original Glass. 4.
Page 165: Winding Of The Scanner Drive Cables
11. Remove the Scanner Drive Gear, pulleys and bushings at the front and rear, and the shaft. 4002D114AD (18) Winding of the Scanner Drive Cables Pulley C Pulley E Pulley F Pulley B Pulley D Pulley A 4002D001AA Front 1. Position the round bead of the Scanner Drive Cable in the pulley as shown.
Page 166 3. Wind the hook end of the cable around the pulley five turns counterclockwise, from the front toward the rear side. NOTE • Make sure that no part of the cable rides on the other. 4002D004AA 4. Slip the Cable Holding Jig onto the pulley to secure the cable in position.
Page 167 8. Slip the Cable Holding Jig onto the pulley to secure the cable in position. 4002D502AA 9. Mount the front and rear pulleys and bushings on the shaft and install the shaft to the Scanner Unit. 10. Mount the Scanner Drive Gear on the shaft and secure it in position with one screw.
Page 168 Front 14. Wind the bead end of the cable around pulley C and pulley B, then hook the bead onto the Adjust- able Anchor. Pulley C Pulley B 4002D008AA 15. Wind the hook end of the cable around pulley A Pulley B and pulley B.
Page 169 19. Fit the hook end of the cable into the groove in the Cable Guide and hook the spring. 4002D120AB 20. Mount the Scanner Motor Assy. 21. Remove the Cable Holding Jigs from the front and rear pulleys. 22. Remove the Allen wrench. 23.
Page 170: Cleaning And Disassembly Of The Engine Parts
2-7. CLEANING AND DISASSEMBLY OF THE ENGINE PARTS Cleaning of the Paper Take-Up Roll 1. Slide out the drawer. 2. Using a soft cloth dampened with alcohol, wipe the Paper Take-Up Roll clean of dirt. 4658D005AA Cleaning of the Paper Separator Roll 1.
Page 171: Cleaning Of The Paper Dust Remover
Cleaning of the Paper Dust Remover 1. Open the Right Door. 2. Remove the Paper Dust Remover. 4004D206AB 3. Using a brush, whisk dust off the Paper Dust Remover. 4004D207AA Cleaning of the Transfer Belt Unit NOTES • If any solvent is to be used, select one from among the following: IPA, ethyl alcohol, PPC Cleaner, and Solmix AP-7.
Page 172: Cleaning Of The Led
Cleaning of the LED NOTE • Whenever the Imaging Unit has been slid out of the copier, be sure to cover it with the light blocking bag (black) or light blocking cloth for packing purposes and place it in a dark place.
Page 173: Cleaning Of The Fusing Entrance Guide Plate
3. Wipe the areas around the Waste Toner Collect- ing Port clean of spilled toner and dirt using a soft cloth dampened with water or alcohol. 4004D222AB Cleaning of the Fusing Entrance Guide Plate 1. Remove the Fusing Unit. Unit Replacement Manual 2.
Page 174 11. Remove two screws and the mounting bracket. 4004D053AA 12. Unplug two connectors of the 2nd Drawer. 4004D054AA 13. Remove two screws and the power line mounting bracket for the 2nd Drawer. 14. Remove the harness from two wiring saddles. 4004D055AA 15.
Page 175: Removal Of The Main Motor
20. Remove the harness from the wiring saddle. ✽ Wiring saddle: Two for M/C; one for Bk 21. Unplug two connectors each. 22. Remove four screws each and Imaging Unit Motor M/C/Bk. 4004D058AB (10) Removal of the Main Motor 1. Remove the MSC/PIC Board Box. D-41 (steps 1 through 8) 2.
Page 176: Removal Of The Fusing Pressure/Retraction Motor
(13) Removal of the Fusing Pressure/Retraction Motor 1. Remove the MSC/PIC Board Box. D-41 (steps 1 through 8) 2. Remove the Fusing Drive Motor. 3. Remove two screws and the harness holder. 4004D063AA 4. Unplug two connectors. 5. Remove three screws and the Fusing Pressure/ Retraction Motor Assy.
Page 177: Removal Of The 1St Image Transfer Pressure/Retraction Motor
Precaution for Reinstallation • When reinstalling the harness holder, make sure that the protrusion on the backside of the holder fits into the hole in the metal bracket. 4004D065AB (14) Removal of the 1st Image Transfer Pressure/Retraction Motor 1. Remove the MSC/PIC Board Box. D-41 (steps 1 through 8) 2.
Page 178: Removal Of Toner Replenishing Motor C/Bk
(15) Removal of Toner Replenishing Motor C/Bk 1. Open the Front Door. 2. Remove the Right Front Cover. 3. Unplug one connector. 4. Remove four screws and the Toner Replenishing Motor C/Bk Assy. 4004D071AB (16) Removal of Toner Replenishing Motor Y/M 1.
Page 179: Removal Of The Power Supply Cooling Fan Motor
6. Unplug one connector. 7. Remove two screws and the Cleaning Web Drive Motor Assy. 4004D128AB 8. Remove two screws and the Cleaning Web Drive Motor. 4004D129AA Gear Assy Construction 4004D130AA (18) Removal of the Power Supply Cooling Fan Motor 1.
Page 180: Removal Of Fusing Cooling Fan Motor 2
3. Unplug 15 connectors and remove the harness from 13 cord clamps and five wiring saddles. 4. Remove nine screws and DC Power Supply 1. 4004D075AB 5. Remove two screws and the Power Supply Cool- ing Fan Motor. 4004D076AA (19) Removal of Fusing Cooling Fan Motor 2 1.
Page 181 4. Disengage the lock at the front. Lock 4004D079AB 5. Disengage the lock in the rear and remove the 2nd Image Transfer Roller. Lock 4004D080AB 6. Remove ten screws and the Right Door reinforce- ment frame. 4004D081AB 7. Remove two screws and the support. 8.
Page 182: Removal Of The 2Nd Image Transfer Pressure/Retraction Clutch
(21) Removal of the 2nd Image Transfer Pressure/Retraction Clutch 1. Open the Right Door. 2. Unplug one connector. 3. Snap off one C-clip and remove the 2nd Image Transfer Pressure/Retraction Clutch. 4004D084AA NOTE • When reinstalling the 2nd Image Transfer Pres- sure/Retraction Clutch, make sure that it is installed correctly as shown.
Page 183: Removal Of The Manual Feed Paper Take-Up Clutch
NOTE • When reinstalling the Synchronizing Roller Clutch, make sure that it is installed correctly as shown. 4004D211AA (23) Removal of the Manual Feed Paper Take-Up Clutch 1. Remove the Rear Right Cover. 2. Unplug one connector. 3. Remove four screws and the Manual Bypass Unit.
Page 184: Removal Of The Paper Take-Up Clutch
(24) Removal of the Paper Take-Up Clutch 1. Remove the Rear Cover and Rear Right Cover. 2. Remove the MSC/PIC Board Box. D-41 (steps 1 through 14) 3. Remove the Main Motor. 4. Unplug two connectors, disconnect three ground connections, and remove the harness from the wiring saddle.
Page 185: Removal Of Aidc/Registration Sensor 1/2
NOTE • When reinstalling the Paper Take-Up Clutch, make sure that it is installed correctly as shown. 4004D213AA (25) Removal of AIDC/Registration Sensor 1/2 1. Open the Right Door. 2. Remove four screws and the Synchronizing Roller entrance guide. 4004D094AA 3.
Page 186: Removal Of The Temperature/Humidity Sensor
(26) Removal of the Temperature/Humidity Sensor 1. Remove the Synchronizing Roller entrance guide. D-53 (steps 1 and 2) 2. Remove one screw, two washers, and the cover. 4004D097AA 3. Remove one screw, unplug one connector, and remove the Temperature/Humidity Sensor. 4004D098AB (27) Removal of the Toner Supply Door Sensor 1.
Page 187: Removal Of The 1St Image Transfer Retraction Position Sensor
(29) Removal of the 1st Image Transfer Retraction Position Sensor 1. Remove the 1st Image Transfer Pressure/Retrac- tion Motor. D-43 2. Remove four screws and the 1st Image Transfer Retraction Position Sensor Assy. 4004D133AA 3. Unplug one connector. 4. Remove the sensor fixing bracket and 1st Image Transfer Retraction Position Sensor.
Page 188: Removal Of The Drawer Set Sensor And Drawer Paper Near-Empty Sensor
(31) Removal of the Drawer Set Sensor and Drawer Paper Near-Empty Sensor 1. Slide out the drawer. 2. Remove the Rear Upper Cover, Rear Right Cover, Rear Left Cover, and Rear Cover. 3. Remove the MSC/PIC Board Box. D-41 (steps 1 through 8) 4.
Page 189: Removal Of The Left Door Switch
14. Remove the sensor fixing bracket and take off the Drawer Set Sensor and Drawer Paper Near- Empty Sensor. 4004D142AA (32) Removal of the Left Door Switch 1. Remove the power supply box. D-47 (steps 1 through 5) 2. Remove two terminals. 3.
Page 190: Removal Of The Front Door Switch
(34) Removal of the Front Door Switch 1. Open the Front Door. 2. Open the Toner Supply Door. 3. Remove the Hopper Left Cover. 4. Remove two terminals. 5. Remove two screws and the Front Door Switch. 4004D145AA (35) Removal of the Fusing Roller Rotation Detecting Sensor 1.
Page 191: Removal Of The 2Nd Image Transfer Pressure Position Sensor
(38) Removal of the 2nd Image Transfer Pressure Position Sensor 1. Open the Right Door. 2. Remove the 2nd Image Transfer Roller. D-48 (steps 1 through 3) 3. Unplug one connector. 4. Remove one screw and the 2nd Image Transfer Pressure Position Sensor.
Page 192: Removal Of The Cd Paper Size Detecting Sensor Assy
(41) Removal of the CD Paper Size Detecting Sensor Assy Where Sensor Assy is Installed Rear Front 4004D156AA 1. Remove the LED Unit. D-22 2. Slide out the drawer. D-55 (step 1) 3. Pressing the portion indicated by the arrow of the CD Paper Size Detecting Sensor Assy, slide the assy to the right and take it off.
Page 193: Removal Of The Paper Separator Roll
5. Snap off one C-clip and remove the Paper Take- Up Roll. 4658D009AA (43) Removal of the Paper Separator Roll 1. Slide out the drawer. 2. Remove two screws and the Paper Separator Roll mounting bracket assy. 4658D002AA 3. Take off the rubber stopper, shaft, spring, and guide plate to remove the Paper Separator Roll fixing bracket assy.
Page 194: Removal Of The Charge Neutralizing Relay
(47) Removal of the Charge Neutralizing Relay 1. Remove the MSC/PIC Board Box. D-41 (steps 1 through 8) 2. Remove four terminals. 3. Remove one screw and the Charge Neutralizing Relay. 4004D160AB (48) Removal of the Waste Toner Full Detecting Sensor 1.
Page 195: Removal Of The Toner Empty Switch (Y/M/C/Bk
3. Unplug one connector. 4. Remove one screw and the Waste Toner Bottle Set Sensor. 4004D164AA (50) Removal of the Toner Empty Switch (Y/M/C/Bk) 1. Open the Front Door. 2. Remove six screws and the Toner Empty Switch Cover. 4004D111AB 3.
Page 196: Adjustments
ADJUSTMENTS • The adjustment procedures must be carried out in the order of printer and IR. 3-1. ADJUSTMENT JIGS AND TOOLS USED 4004D510AA 4002D503AA Scanner Positioning Jigs Scanner Drive Cable Holding Jig 4004D185AA 4004D186AA Imaging Unit Pull-out Jig LED Cleaning Jig 4004D187AA LED Cleaning Jig Pad D-64...
Page 197: Adjustment Requirements List
3-2. ADJUSTMENT REQUIREMENTS LIST Adjustment Item Requirements Ref. Page D-69 Touch Panel Adj. Automatically adjusted 5.0 ± 1.0 mm D-70 Top Margin 3.0 ± 1.0 mm D-72 Left Margin 3.0 ± 1.0 mm D-73 Dup. Left Margin Test print tilts ±...
Page 198: Adjustment Of Switches
3-3. ADJUSTMENT OF SWITCHES Microswitches The following microswitches are used in various parts of this copier. Blue Yellow (NC) (NO) (COM) (COM) 1136D007AA 1136D008AA Wiring for the NO Type Wiring for the NC Type NC (Normally-Closed) : Current flows between NC and COM when the actuator is open. NO (Normally-Open) : Current flows between NO and COM when the actuator is closed.
Page 199 riginal Glass Cooling Fan Motor. 2. Loosen the three screws th Motor mounting bracket. 4004D188AC 3. With the Scanner Drive Ge positioned on the motor sid Motor to the right and left th 4. Tighten the three screws th Motor mounting bracket. 4004D231AB...
Page 200: Electrical/Image Adjustment
3-5. ELECTRICAL/IMAGE ADJUSTMENT Accessing the Tech. Rep. Mode 1. Press the Utility key. 2. Touch [Meter Count]. 3. Press the following keys in this order: Stop → 0 → 0 → Stop → 0 → 1 Producing a Test Print 1.
Page 201: Touch Panel Adj
Touch Panel Adj. NOTE • Make this adjustment if the Touch Panel is slow to respond to a pressing action. 1. Press the following keys: Stop → 0 → Stop → 3 2. Using the tip of a pen or similar object, touch the four crosses (+) on the screen in sequence.
Page 202: Top Margin
Top Margin Requirement Width A on the test pattern produced should fall within the following range. Width 4004D511AA Specifications Adjustment Mode Setting Range 5.0 or 7.0 ± 1.0 mm Top Margin -2.0 mm to +2.0 mm ✽ The leading edge erase width is set to 5 mm or 7 mm by “Erase” under “Administrator Mode.”...
Page 203 16. Select “Cyan,” “SINGLE,” and “HYPER.” 17. Press the Clear key to clear the density setting. 18. Enter “255” from the 10-Key Pad. 19. Press the Start key to let the copier produce a test pattern. 20. Check to see if the image on the leading and trailing edges of the test pattern is faint. ✽...
Page 204: Left Margin
Left Margin Requirement Width A on the test pattern produced should fall Width A within the following range. 4004D512AA Specifications Adjustment Mode Setting Range 3.0 ± 1.0 mm Left Margin -3.0 mm to +3.0 mm This adjustment must be made in any of the following cases: •...
Page 205: Dup. Left Margin
Dup. Left Margin Requirement Width A on the test pattern produced should fall Width A within the following range. NOTE • Make this check with the backside of the test pat- tern produced. 4004D512AA Specifications Adjustment Mode Setting Range 3.0 ± 1.0 mm Dup.
Page 206: Paper Loop
Paper Loop Requirement The test pattern produced should not deviate in the direction of either A or B. 4004D520AA Adjustment Mode Setting Range Paper Loop -5 to +5 This adjustment must be made in any of the following cases: • The void image along the leading edge varies from one copy to another. •...
Page 207: Color Shift Correction
Color Shift Correction This adjustment must be made in the following case: • Color shift occurs. Adjustment Procedure 1. Make the “Paper Loop” adjustment. D-74 2. Go back to the Tech. Rep. Mode initial screen. 3. Touch these keys in this order: “Machine Adjust” → “Color Shift Correction.” 4.
Page 208 ✽ If any of the crosses deviates: 16. Touch the color of the deviated cross. 17. Change the settings for X and Y using the Up/Down key. Setting Instructions For X direction: If the cross deviates in the direction of A, decrease the setting.
Page 209 18. Fold the test pattern in half lengthwise. 19. Check to see if any of the cyan, magenta, and yellow crosses deviates with reference to the black cross. ✽ If any of the crosses deviates: 20. Touch the color of the deviated cross. 21.
Page 210: Fuser Nip
Fuser Nip Requirement The nip width on the test pattern produced should fall Nip Width within the following range. 4004D513AA Specifications Adjustment Mode Setting Range 7.0 ± 0.5 mm Fuser Nip — This adjustment must be made in any of the following cases: •...
Page 211 Adjustment Instructions If the nip width on the test pattern is longer than the specifications, loosen the adjusting screws. If the nip width on the test pattern is shorter than the specifications, tighten the adjusting screws. 10. Reinstall the front and rear covers and the Fusing Unit in position. 11.
Page 212: Fuser Temp
(10) Fuser Temp. This adjustment must be made in the following case: • Fusing performance is poor or offset occurs when the paper type or environmental condi- tions are changed. As a general rule, the following settings should not be changed: •...
Page 213: Fuser Speed
(11) Fuser Speed This adjustment must be made in the following case: • Brush effect or blurred image is evident as a result of changes in environmental condi- tions or degraded durability. Adjustment Procedure 1. Call the Tech. Rep. Mode to the screen. 2.
Page 214: Left Image
(12) Left Image Requirement The position of 0 mm of the scale on the sample copy Scale 0-mm produced should fall within the following range. Position 4004D514AA Specifications Adjustment Mode Setting Range 0 ± 1.0 mm Left Image -10.0 to +10.0 This adjustment must be made in any of the following cases: •...
Page 215: Top Image
(13) Top Image Requirement The position of 10 mm of the scale on the sample Scale 10-mm Position copy produced should fall within the following range. 4004D515AA Specifications Adjustment Mode Setting Range 10.0 ± 1.0 mm Top Image -5.0 to +5.0 This adjustment must be made in any of the following cases: •...
Page 216: Cd-Mag
(14) CD-Mag. Requirement The 200-mm width of the scale on the sample copy 200 mm produced should fall within the following range. 4004D516AB Specifications Adjustment Mode Setting Range 200 ± 1.0 mm CD-Mag. 0.990 to 1.010 This adjustment must be made in any of the following cases: •...
Page 217: Fd-Mag
(15) FD-Mag. Requirement The 300-mm width of the scale on the sample copy 300 mm produced should fall within the following range. 4004D517AB Specifications Adjustment Mode Setting Range 300 ± 1.5 mm FD-Mag. 0.990 to 1.010 This adjustment must be made in any of the following cases: •...
Page 218: Org. Detect Sensor
(16) Org. Detect Sensor This adjustment must be made in any of the following cases: • The Original Size Detecting Sensor has been replaced. • The optional Original Size Detecting Sensors have been added. • The copier fails to detect the size of the original correctly. Adjustment Procedure 1.
Page 219: Gradation Adjust
(17) Gradation Adjust This adjustment must be made in the following case: • Color reproduction performance becomes poor. Adjustment Procedure 1. Call the Tech. Rep. Mode to the screen. 2. Touch “Gradation Adjust.” 3. Press the Start key to let the copier produce a test pattern. 4.
Page 220: Prt Max Density
(18) PRT Max Density This adjustment must be made in the following case: • An image quality problem is not corrected even after Gradation Adjust has been run. Adjustment Procedure 1. Call the Tech. Rep. Mode to the screen. 2. Touch these keys in this order: “Image Adjust” → “PRT Max Density.” 3.
Page 221: Background Voltage Margin
(20) Background Voltage Margin This adjustment must be made in the following case: • Foggy background occurs. Adjustment Procedure 1. Call the Tech. Rep. Mode to the screen. 2. Touch these keys in this order: “Image Adjust” → “Background Voltage Margin.” 3.
Page 222: Other Adjustments
OTHER ADJUSTMENTS 4-1. Adjustment of the Position of the Scanner and 2nd/3rd Mirrors Carriage Requirement • With the Scanner Assy fixed to the Scanner Drive Cables, there should be no gap between the Scanner/Mirrors Carriage Positioning Jig and the Scanner and also between the Scanner/Mirrors Carriage Positioning Jig and the 2nd/3rd Mirror Carriage.
Page 223: Adjustment Of The 2Nd/3Rd Mirrors Carriage Assy For Parallel Alignment
NOTE • When installing the Scanner Positioning Jigs, be sure to fit the tabs on the jigs into the holes at the front and rear ends of the frame. 4004D220AC 5. Press the Scanner Assy and 2nd/3rd Mirrors Car- riage Assy tightly up against the Scanner Posi- tioning Jigs.
Page 224 Adjustment Instructions If there is a gap between the 2nd/3rd Mirrors Carriage Assy and the Scanner Positioning Jig at the front, turn the adjusting screw clockwise. If there is a gap between the 2nd/3rd Mirrors Carriage Assy and the Scanner Positioning Jig in the rear, turn the adjusting screw counterclockwise.
Page 225: Miscellaneous
MISCELLANEOUS 5-1. INSTALLATION OF THE MECHANICAL COUNTER (OPTION) 1. Open the Front Door. 2. Open the Toner Supply Door. 3. Remove the Panel Cover. 4. Open the Right Door. 5. Remove the Front Right Cover. 6. Cut out the knockout in the Front Right Cover. C4004U267AA 7.
Page 226: Mounting Of The Original Size Detecting Sensors (Option
5-2. MOUNTING OF THE ORIGINAL SIZE DETECTING SENSORS (OPTION) NOTE • When an Original Size Detecting Sensor has been added, select “SET” in “Org. Detect Option Sensor” of “System Input” available from the “Tech. Rep. Mode” and run “Org. Detect Sensor” of “Machine Adjust.” D-86 1.
Page 227: Flash Memory
5-3. 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 MSC Board. Its contents are reprogrammed easily by performing the following steps using the IC card (memory card), into which data has been previously downloaded.
Page 228 11. Unplug the power cord from the power outlet. NOTE • Do not turn OFF the Power Switch. 12. Remove the memory card from the slot and turn OFF the Power Switch. 13. Check that the “ROM Version” of “Tech. Rep. Mode” matches the version marked on the memory card.
Page 229: Remounting Ram Ic (Ic5
5-4. REMOUNTING RAM IC (IC5) NOTE • If the MSC Board has replaced, be sure to remount RAM IC from the old to new board. • If the MSC Board has been replaced and RAM IC is not to be remounted, be sure to record all data of User’s Choice and Tech.
Page 230 SWITCHES ON PWBs, TECH. REP. SETTINGS 17196...
Page 231 CONTENTS 1. CONTROL PANEL KEYS AND TOUCH PANEL ..........S-1 1-1. Control Panel Keys .................. S-1 1-2. Explanation of the Touch Panel ............... S-3 (1) Basic Screen ................... S-3 (2) Warning Screens ................S-4 2. FUNCTION OF SWITCHES AND OTHER PARTS ON PWBs ......S-6 2-1.
Page 232: Control Panel Keys And Touch Panel
CONTROL PANEL KEYS AND TOUCH PANEL 1-1. Control Panel Keys 4004P008AA...
Page 233 1. Access Mode Key 9. Touch Panel • Press to enter the access number when • Shows various screens and message. Copy Track of the Administrator mode 10. Job Recall Key available. Press the access Key. • Press to display the Job Recall screen. 2.
Page 234: Explanation Of The Touch Panel
1-2. Explanation of the Touch Panel Basic Screen The Basic screen is the initial screen that appears when the copier is turned ON. 4004P022CB 1. Supplementary Function Keys • Select the Auxiliary, Finishing, Orig. Copy, or Basics function. 2. Message Display •...
Page 235: Warning Screens
Warning Screens The Warning screen may be a malfunction display, error display, warning display, or a cau- tion display. <Malfunction Display> <Error Display> Given when a malfunction occurs. Given when an error occurs. E.g.: Malfunctions that can be identified E.g.: Paper misfeed, door open, etc. with a specific code.
Page 236 <Engine / IR Warning> When the engine or IR develops a faulty condition, a mark appears at the lower left corner of the Basic screen. Touch this mark, and the display shows the details of the fault. NOTE • For details, see TROUBLE SHOOTING. 4004P027CB 4004P028CA...
Page 237: Function Of Switches And Other Parts On Pwbs
FUNCTION OF SWITCHES AND OTHER PARTS ON PWBs 2-1. PWB Location PWB-H PWB-T 4004S002AA 2-2. PWB-H (MSC Board) PWB-H TOTAL MEMORY 4004S001AB Symbol Name Description Initialize Switch Resets a misfeed, malfunction, and erratic display. Memory Clear Test Point Clears choice-related data. NOTE •...
Page 238: Pwb-T (Tech. Rep. Setting Switches Board
2-3. PWB-T (Tech. Rep. Setting Switches Board) 4004S003AB Symbol Name Description Trouble Reset Switch Resets the malfunction display. Clearing Procedures Initialize 1. Turn ON the Power Switch. 2. With the circuit across pins of PJ2 closed, turn OFF then ON the Power Switch. 3.
Page 239: Data/Conditions Cleared By Reset Switches/Pins
Data/Conditions Cleared by Reset Switches/Pins Clearing Method Trouble Reset Front Door Initialize Memory Clear Switch Open/Close Data Cleared ❍ ❍ Misfeed display – – Fusing/ Optical ❍ ❍ Scanner – – Malfunction display faults ❍ ❍ ❍ Others – ❍ ❍...
Page 240: Utility Mode
UTILITY MODE • Utility Mode is used to make various settings according to the user’s need. 3-1. Utility Mode Selection Screen • Press the Utility key on the control panel 4004P044CB 3-2. Utility Mode Function Tree Default Settings Meter Count Job Memory Input Administrator Mode 1/2 Utility...
Page 241: Settings In The Utility Mode
3-3. Settings in the Utility Mode Touch Panel Setting Display Default Settings Select the copying function settings established when the Power Switch is turned ON or the Panel Reset key is pressed. NOTE • To designate the “Current Settings,” first make the necessary set- tings on the control panel, then touch “Current Settings.”...
Page 242 2. User’s Choice Mode Function Tree Language selected 2in1 copy zoom Intelligent sorting User’s Choice 1/2 ACS Determination level Adjust Confirmation Beep Mail Bin Assignment User’s Choice Auto Panel Reset Energy Save Mode User’s Choice 2/2 Sleep Mode 1st Drawer Paper Select 3.
Page 243 Touch Panel Setting (The default is Highlighted Display Mail Bin Select whether or not to designate specific bin or bins for the output Assignment via the PC when a Mailbin Finisher is mounted. 2-10 Bin NOTE • When a specific bin is designated, that bin and subsequent bins are assigned for the output via the PC.
Page 244: Administrator Mode
Administrator Mode • The entry on the “Administrator #” set using the Tech. Rep. mode permits the settings of the following functions. 1. Administrator Mode Function Setting Procedure <Procedure> 1. Press the Utility key. 2. Touch the “Administrator Mode” key. 3.
Page 245 3. Settings in the Administrator Mode Touch Panel Setting (The default is Highlighted Display Administrator The entry on the “Administrator #” set using the Tech. Rep. mode per- Mode mits the settings of the following functions. Administrator Displays the various setting screens including Copy Track and Grada- Mode 1/2 tion Adjust.
Page 246 Touch Panel Setting (The default is Highlighted Display Gradation Adjust When an image failure occurs, run this function to automatically cor- rect the gamma curve. ✽ For details, see DIS/REASSEMBLY, ADJUSTMENT. Disable Sleep Select whether to enable or disable the setting of the “Sleep” function Mode available from User’s Choice.
Page 247 Touch Panel Setting (The default is Highlighted Display Expert. User’s Displays the paper passage-related function adjustment screens. Mode 2/2 PRT Area Adjust the image position for each paper source by varying the print (Top Margin) start position of the printer in the sub scanning direction. Setting -2 mm ......
Page 248: Tech. Rep. Mode
Tech. Rep. Mode • This mode is used by the Tech. Rep. to check, set, adjust, and/or program various ser- vice functions. 4-1. Tech. Rep. Mode Menu Screen 4004P030CB 4-2. Tech. Rep. Mode Function Setting Procedure <Procedure> 1. Press the Utility key. 2.
Page 249: Tech. Rep. Mode Menu Function Tree
4-3. Tech. Rep. Mode Menu Function Tree Fuser Nip Fuser Temp. Fuser Speed Orig. Detect Sensor PRT Area Machine Adjust IR Area Loop Adjust Color Shift Correction LPH Rank Staple/Hole-Punch PRT Max Density PRT Highlight Background Voltage ATDC Level Setting Image Adjust AE Adjust Stabilizer...
Page 250 Tech. Rep. Choice I/O Check ADF Check Paper Passage ROM Version RD Mode Administrator # Service Mode Input Image Processing List Output Counter Gradation Pattern Halftone Lattice Pattern Solid Pattern Test Print Color Sample IR Test Pattern 8 Color Solid Pattern Gradation Adjust S-19...
Page 251: Setting In The Tech. Rep. Mode
4-4. Setting in the Tech. Rep. Mode Machine Adjust • These functions are used to make the various mechanical adjustments of the copier. NOTE • For details, see DIS/REASSEMBLY, ADJUSTMENT or Option service manual. Touch Panel Setting Display Fuser Nip Produces a sample copy for the check of the Fusing Roller nip width.
Page 252 Touch Panel Setting Display Color Shift Color Shift Correction (C) Correction Correct (fine-adjust) color shift of the cyan image in each of X, Y, and θ directions. Color Shift Correction (M) Correct (fine-adjust) color shift of the magenta image in each of X, Y, and θ...
Page 253: Image Adjust
Image Adjust • These functions are used to make image adjustments. NOTE • For details, see TROUBLE SHOOTING. Touch Panel Setting (The default is Highlighted Display PRT Max Density Adjust the image density by varying the maximum amount of toner sticking to paper.
Page 254: System Input
System Input • The function allows the Tech. Rep. to define the marketing area, and make settings. Touch Panel Setting (The default is Highlighted Display Marketing Area Set the marketing area. Org. Detect Option Select “ON” when the optional Original Size Detecting Sensor is Sensor mounted.
Page 255 Touch Panel Setting (The default is Highlighted Display Unit Change Select who is to replace a unit when its replacement time arrives, either “User” or “Service.” Set the type of “Warning” message displayed on the Touch Panel when the replacement time arrives depending on the setting. Unit To be replaced by Toner...
Page 256: Counter
Counter • Shows the number of copies made on each paper size or type. <Clearing a Count> 1. Open the counter menu screen. 2. Select the counter to be cleared. 3. Press the Clear key. Press the Stop key to undo the clearing operation, restoring the original count. 4.
Page 257 Touch Panel Setting Display Life Display Description LPH (Y) Period of time over which the Yellow LPH has been used. LPH (Bk) Period of time over which the Black LPH has been used. Counts the number of misfeeds that have occurred at different loca- tions in the copier.
Page 258 Touch Panel Setting Display Trouble Display Description C0206 Black PC Charge C0400 Exposure Lamp off C0410 Exposure Lamp On C0500 Fuser (Upper) C0501 Fuser (Lower) C0510 Abnormal Low Temp. (Upper) C0511 Abnormal Low Temp. (Lower) C0520 Abnormal High Temp. (Upper) Display Description C0521...
Page 259: State Confirm
Touch Panel Setting Display Warning Displays the number of warnings issued for different parts. Display Display AIDC Sensor (Front) CCD Gain AIDC Sensor (Back) Exp. Lamp Adjust Cyan IU Color Shift Test Pattern Magenta IU Color Shift Adjust Yellow IU ATVC (C) Black IU ATVC (M)
Page 260 Touch Panel Setting Display Level History 1 Displays ATDC, AIDC, and fusing temperatures. Display Description ATDC-C ATDC Sensor, cyan ratio (%) ATDC-M ATDC Sensor, magenta ratio (%) ATDC-Y ATDC Sensor, yellow ratio (%) ATDC-Bk ATDC Sensor, black ratio (%) AIDC1 AIDC Sensor output value 1 (V) AIDC2 AIDC Sensor output value 2 (V)
Page 261: Adf Check
ADF Check • Allows the Tech. Rep. to make the various functional tests and adjustments of the (ADF). ✽ For details, see Option service manual. Touch Panel Setting Display Tech. Rep. Choice Displays the screens used to adjust. Original Stop Adjust the document stop position in each of the ADF modes.
Page 262: Rd Mode
RD Mode • Make the initial settings of the copier for the Data Terminal. 1. RD Mode Menu Function Tree e-mail System Set Modem CT-ID DT-ID TEL. No. DT Setting (Setting Modem) Initial Mail Address Billing Center Transmission (Setting e-mail) (Setting Modem) Billing RAM Clear...
Page 263 2. Setting in the RD Mode Touch Panel Setting (The default is Highlighted Display System Set Set the control system. e-mail Modem Billing Center Displays the various setting screens. DT Setting Displays the setting screens for CT-ID, DT-ID, and telephone number. The mail address is also displayed if “e-mail”...
Page 264: Administrator # Input
Touch Panel Setting (The default is Highlighted Display Date/Time Set Set the date and time-of-day for Date Printing. Common DT Displays the screens for communications settings. Dial Mode Sets the type of telephone line of the user. Tone Pulse Auto Receive Sets the auto reception function.
Page 265 Details of List Output Image Counter Date/Time IR Area OHP Speed ADF Original Position Transfer Table Count Up Select PC Action ATDC Sensor Volume Fuser Action AIDC Level PC PAT. PRT max Density Paper Size PRT Highlight Marketing Area Background Voltage Serial # ATDC Level Setting Fuser Oil Choice...
Page 266: Test Print
(11) Test Print • Output the test pattern. <Procedure> 1. Select the test pattern type. 2. Make the necessary settings according to the specific Test Print function (Color mode, density, etc.). 3. Press the Start key to start the output sequence. ✽...
Page 267: Touch Panel Correction Mode
TOUCH PANEL CORRECTION MODE • Corrects deviation in the sensitive area of the Touch Panel. 5-1. Touch Panel Correction Mode Screen 4004P031CA 5-2. Touch Panel Correction Mode Setting Procedures <Procedure> 1. Press the following keys in this order. Stop ¡ 0 ¡ Stop ¡ 3 2.
Page 268: Security Mode
SECURITY MODE • Allows the Tech. Rep. to set the various counters. 6-1. Security Mode Screen 4004P032CA 6-2. Security Mode Setting Procedures <Procedure> 1. Show the Tech. Rep. mode menu screen. 2. Press the following keys in this order: Stop ¡ 9 3.
Page 269: Settings In The Security Mode
6-3. Settings in the Security Mode Touch Panel Setting (The default is Highlighted Display Size Counter Select the size of the paper to be counted by the Size Counter. No Count A3/11×17 A3/B4/11×17/Legal A3/B4/FLS/11×17/Legal Total Counter Select the condition by which the Counter count is increased. 1 Copy per 1 copy cycle Mode 1 Multiple count-up according to paper size 1/2-sided...
Page 270: Date/Time Input Mode
DATE/TIME INPUT MODE • This mode is used to set time-of-day and date. 7-1. Date/Time Input mode Screen 4004P033CA 7-2. Date/Time Input Mode Setting Procedure <Procedure> 1. Press the following keys in this order. Stop ¡ 1 ¡ 1 ¡ 4 ¡ 4 Clear 2.

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Cf2001

Minolta CF1501 Service Manual

General

1 Specifications

2 Precautions for Installation

3 Precautions for Use

4 Handling of the Consumables

5 Other Precautions

6 System Options

Mechanical/ Electrical

1 Cross-Sectional View

2 Copy Process

3 Drive System

4 Operating Sequence

5 Control Block Diagram

6 Locations of Terminals

7 Image Stabilization System

8 Pc Drum

9 Pc Drum Charge Corona

10 Image Reader (Ir) Section

11 Original Size Detecting Section

12 Printer Section

13 Imaging Unit

14 Toner Hopper

15 Paper Take-Up Section

16 Manual Bypass Paper Take-Up Section

17 Synchronizing Rollers

18 Image Transfer Section

19 Main Erase Lamp

20 Pc Drum Cleaning Unit

21 Fusing Section

22 Other Mechanisms

Dis/Reassembly, Adjustment

1 Service Instructions

2 Disassembly/Reassembly

3 Adjustments

4 Other Adjustments

5 Miscellaneous

Switches on Pwbs, Tech. Rep. Settings

1 Control Panel Keys and Touch Panel

2 FUNCTION of SWITCHES and OTHER PARTS on Pwbs

3 Utility Mode

4 Tech. Rep. Mode

5 Touch Panel Correction Mode

6 Security Mode

7 Date/Time Input Mode

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Summary of Contents for Minolta CF1501