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Minolta Di 620 Manual

Minolta Di 620 Manual

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Table of Contents

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Di 620
GENERAL,
MECHANICAL/
ELECTRICAL

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Summary of Contents for Minolta Di 620

  • Page 1 Return to Main Form Return to Copier Form Di 620 GENERAL, MECHANICAL/ ELECTRICAL...

  • Page 2: Table Of Contents

    CONTENTS 1155SBG000BA GENERAL 1. SAFETY INFOMATION ......G-1 2. SPECIFICATIONS ....... . .G-7 3.
  • Page 3 CONTENTS 10. PH SECTION........M-47 10-1.
  • Page 4 CONTENTS 13. TRANSPORT/SYSCHRONIZING ROLLERS UNIT..M-98 13-1. Paper Dust Remover......M-99 13-2.

  • Page 5: General

    1151SBG000CA GENERAL...

  • Page 6: Safety Information

    CAUTION: 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 documentation.
  • Page 7 For European 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 15mW and the wavelength is 780nm. (Two provided.) For Denmark Users: ADVARSEL Usynlig laserstråling ved åbning, når sikkerhedsafbrydere er ude af funktion.
  • Page 8 Laser Safety Labels Laser safety labels are attached to the outside of the copy machine as shown below. For Europe For United States 1155O698CB 1155O653AA 1155O699EA...
  • Page 9 Label inside copy machine The following laser safety label will be attached inside the copy machine as shown below. 1155G002AA...
  • Page 10 1155SBG000D 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.
  • Page 11 ALL Areas CAUTION "Replace only with the same or equivalent type recommended by the manufacturer. Dispose of used IC Package according to the manufacturer’s instruction." Germany only VORSICHT! ⇒"Austausch nur durch denselben oder einen vom Hersteller empfohlenen, gleichwertigen Typ. Entsorgung gebrauchter Batterien nach Angaben des Herstellers."...

  • Page 12: Specifications

    1155SBG0200A SPECIFICATIONS TYPE : Console (with Stationary Platen) PHOTOCONDUCTOR : Organic Photoconductor ORIGINAL SCANNING : Lens Reduction Type CCD Line Sensor RESOLUTION : 400dpi, 600dpi : 400dpi × 400dpi, 600dpi × 600dpi SCANNING DENSITY : 400dpi × 400dpi, 600dpi × 600dpi PRINT DENSITY COPYING SYSTEM : Electrostatic Dry Powdered Image Transfer to Plain...
  • Page 13 MULTIPLE COPIES : 1 to 999 WARMING-UP TIME : 7 min. or less with room temperature of 20°C and rated power voltage × FIRST COPY TIME : A4C or 8-1/2” 11”C: 6.0 sec. or less (in Full size Mode using 1st Drawer) CONTINUOUS COPY SPEED (copies/min.) Fed from 1st Drawer/Memory Mode: Zoom Ratio Zoom Ratio...
  • Page 14 ENVIRONMENTAL CONDITIONS Temperature 10 to 32°C with a fluctuation of 10°C or less per hour Humidity 15 to 85% RH with a fluctuation of 10% RH or less per hour Ambient Illumination 3,000 lux or less Levelness 1° (1.75 mm/100 mm) DIMENSIONS : Width ..
  • Page 15 1155SBG0300A 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. Which is in the direct air stream of an air conditioner, heater or ventilator.

  • Page 16: Precautions For Use

    1155SBG0400A PRECAUTIONS FOR USE To ensure that the copier is used in an optimum condition, observe the following precautions. Never place a heavy object on the copier or subject the copier to shocks. Insert the power plug all the way into the outlet. Do not attempt to remove any panel or cover which is secured while the copier is making copies.

  • Page 17: Handling Of The Consumables

    1155SBG0500A 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 can to be easily damaged by dampness. To prevent absorption of mois- ture, 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 18: System Options

    1155SBG0700A SYSTEM OPTIONS 1145M035AA 1138O525AA 4487U043AA 1155O013DA 4487U025AA Data Terminal DT-103 Large Capacity Cassette C-304 Plug-In Counter Finisher FN-3 Electronic Document Handler EDH-1 16MB Memory Data Controller D-102 Hard Disk Drive Kit G-13...
  • Page 19 1155SAM000CA MACHANICAL/ ELECTRICAL...

  • Page 20: Cross-Sectional View

    1155SBM0100A CROSS-SECTIONAL VIEW 5 6 7 12 13 14 45 46 1155G001AA...
  • Page 21 1. Mirror #3 39. Suction Unit 2. Mirror #2 40. Cleaning Blade 3. Mirror #1 41. Lower Fusing Roller 4. Exposure Lamp (FL1) 42. Lower Fusing Roller Heater Lamp (H2) 5. Web Wind-up Roller 43. PC Drum Separator Finger 6. Web Coat/Transfer Roller 44.

  • Page 22: Copying Process

    1155SBM0200A COPYING PROCESS 1. Photoelectric 2. IR Image-Processing 3. Memory 4. PH Image-Processing Conversion Section Section Section Section 7. Drum 5. Laser Exposure Charging 14. Main Erase 6. PC Drum 13. Cleaning 8. Image Development 17. Upper Paper Exit Switch 11/12.
  • Page 23 10. Image Transfer A single-wire transfer corona generates a positive DC corona discharge on the back side of the sheet being fed. This causes the visible image on the PC drum to transfer onto the front side of the paper. 11.

  • Page 24: Drive System

    1155SBM0300A DRIVE SYSTEM DRIVE SYSTEM 1155M052AA A. PC Drum Drive Motor (M2) : Drives the PC Drum and the Suction Belt. 1. Suction Belt Drive Gears 2. PC Drum Drive Docking Shaft and 2nd and 3rd Mirror Carriage. B. Scanner Motor (M31) : Drives the scanner 3.

  • Page 25: Operating Sequence

    1155SBM0400A OPERATING SEQUENCE DRIVE SYSTEM Power cord is plugged into power outlet. Power source outputs stabilized DC24V power supply to the dehumidifying heaters. (LCC Tray) Note: Only if the Paper Dehumidifying Switch (S8) is ON. Power Switch is turned ON. DC Voltage output Control panel display Approx.
  • Page 26 =The following shows the sequence for making a single copy onto A4C paper, feeding from the 1st Drawer, at 100% magnification.= When START key is turned ON (IR Section). Exposure Lamp (FL1) IR Cooling Fan Motor (M33) Scanner Motor (M31) ..Moves under shading sheet. M31.......
  • Page 27 When START key is turned ON (Printer Section). Developer bias Approx. 50ms PC-Drum Drive Motor (M2) Suction Fan Motor (M14) Main Erase Lamp (LA1) Approx. 200ms PC Drum Charger Grid output After reading AIDC pattern: Approx. 110ms Grid output Power Supply Unit Cooling Fan Motor #2, #3 (M16, M18) PH Cooling Fan Motor (M19) Ozone Ventilation Fan...
  • Page 28 When VD signal from PWB-B (Memory Board) to PWB-A (Master Board) goes Start laser illumination of drum. Approx. 164ms Synchronizing Motor (M5) Transfer/Separator Charger Separator-Finger Solenoid (SL4) Approx. 230ms Approx. 135ms Exit/Duplex Switching Solenoid (SL3) Approx.1225ms When sheet clears Transport Roller Sensor (PC1): Vertical Transport Motor (M22) Approx.131ms Transport Motor (M23)
  • Page 29 When sheet clears Turnover/Exit Sensor (PC14): Turnover Motor (M6) Approx. 5075ms Fusing Motor (M3) When VD signal to PWB-A (Master Board) changes from Stop laser illumination. Approx. 110ms Grid output Developing Unit Drive Motor (M1) Approx. 160ms Approx. 290ms Transfer/Separator Charger Approx.

  • Page 30: Image Stabilizing System

    1155SBM0500A IMAGE STABILIZING SYSTEM The following table outlines the controls measures taken to maintain stable imaging. Item Purpose Method Initial Setup First correct for AIDC sensor disparity Set initial values for grid voltage (Vg) and contamination. Then use ∆V con- and developer bias (Vb).

  • Page 31: Aidc Sensor

    1155SBM0501A 5-1. AlDC Sensor To provide image stabilization control, this copier has AlDC Sensor fitted to the Cleaning Unit of the Imaging Unit. The sensor is used to detect the toner density and background level on the PC Drum. Operation 1: The LED projects approx.

  • Page 32: Control Methods The Image Stabilizing System

    1155SBM0502A 5-2. Control Methods of the Image Stabilizing System AIDC Sensor Control Grid Voltage Control (Vg) Controls are implemented as follows. -1. Adjustment of AIDC Sensor Disparity (coarse adjustment) This adjustment is required when normal correction of AIDC contamination and disparity (installation disparity, circuitry error, drum deterioration, etc.) fails to bring operation to within the appropriate range.

  • Page 33: Pc Drum

    1155SBM0600A PC DRUM The copier uses an OPC (organic photocondutor) drum. * The drum consists of an aluminum base coated with a carrier generation layer and a charge holding layer. The drum provides good spectral sensitivity in the near infrared range. (Usage Precautions) Protracted exposure to extraneous light can cause the drum surface to suffer light fatigue, resulting in a loss of optical sensitivity.

  • Page 34: Grounding Of The Pc Drum

    1155SBM0602A 6-2. Grounding of the PC Drum The PC Drum ground point is inside the rear end. When the PC Unit is slid into the copier, the Drum Holding Shaft contacts the ground point. This provides for assured grounding of the PC Drum through the Ground Plate in the rear to the frame of the copier.

  • Page 35: Drum Charging

    1155SBM0700A DRUM CHARGING A scorotron charger system generates a negative DC corona discharge onto the drum surface. A grid mesh provides uniform charging. The grid voltage (VG) applied to the grid mesh is controlled by the constant voltage circuitry within the Drum Charge High Voltage Unit (HV1). In order to restrict ozone production, the copier utilizes two comb electrode chargers to generate the charge.

  • Page 36: Pc Drum Charge Corona Comb Electrode Cleaning Mechanism

    1155SBM0701A 7-1. PC Drum Charge Corona Comb Electrode Cleaning Mechanism The two PC Drum Charge Corona Comb Electrodes are provided with a cleaning mechanism that removes from the electrodes any toner and dust particles which would otherwise cause uneven charging, white streaks on copies, and charge leak. <Mechanism>...
  • Page 37 <Control> The PC Drum Charge corona wires are automatically cleaned under the follow- ing conditions. The cleaning function is, however, disabled if the “Charge Wire Cleaning” function of “System Input” available from the Tech. Rep. mode has been set to “Off”. (1) A period of 500 msec.

  • Page 38: Ozone Filter

    1155SBM0702A 7-2. Ozone Filter Ozone produced by the PC Drum Charge Corona is absorbed by the Ozone Filter as the air is drawn out of the copier by Ozone Ventilation Fan Motor. PC Drum Charger Ozone Filter PC Drum Cooling Fan Motor (M17) Ozone Ventilation Fan Motor (M12)

  • Page 39: Ir Section

    1155SBM0800A IR SECTION • Light reflected from the original during scanner movement passes through three mir- rors and one lens to form a reduced image on the CCD sensor. The sensor con- verts the light pattern (image data) into an electrical image signal. •...

  • Page 40: Exposure Section: Structure And Operation

    1155SBM0801A 8-1. Exposure Section: Structure and Operation 1155M007AA 1. Auxiliary Reflector When books or other bound volumes are copied, the paper in the area near the binding generally fails to come flush against the glass, so that the copy for these areas is generally too dark.

  • Page 41: Exposure Lamp On/Off Control

    1155SBM0802A 8-2. Exposure Lamp ON/OFF Control • ON/OFF of the Exposure Lamp is controlled by the Exposure Lamp remote signal from the Digital Image Processing Board. • ON/OFF timing varies according to whether the operation is generated by the Power Switch or by the Start key, as follows.
  • Page 42 =Operation when START key is pressed (ON)= <Exposure Lamp ON Timing> • The Exposure Lamp remote signal goes (Exposure Lamp comes ON) as soon as the Start key is pressed. To help ensure stable illumination, data scan- ning (including sequential-data scanning) does not begin until the lamp has been •...

  • Page 43: Ir Image Processing System

    1155SBM0803A 8-3. IR Image Processing System • The IR image processing system is composed of the following blocks. These blocks implement various types of corrective processing. 1. Photoelectric Conversion (CCD Sensor): PWB-IA 2. Analog Processing: PWB-IA 3. ODD/EVEN Synthesis: PWB-IB 4.
  • Page 44 1. Photoelectric Conversion (CCD Sensor): PWB-IA • Light from the Exposure Lamp (FL1) reflects off the original, passes through mirrors and one lens, and reaches the CCD sensor. The CCD sensor converts the optical data into analog electrical signals. 2. Analog Processing: PWB-IA •...

  • Page 45: Image Density Control

    1155SBM0804A 8-4. Image Density Control 1) Auto Density (AE) Control • Auto Density Control (AE Control) varies the background removal threshold in accordance with the original type (newspaper, photograph, etc.). This helps ensure that only the fogging component in the low-density areas is removed, while retaining the image density of the characters and other high-density areas of the image.
  • Page 46 <Realtime Scanning> • Realtime scanning is carried out by scanning the image data while copying is in progress. (This is the same type of scanning used with analog PPCs). • The data samples are plotted into a reflectivity histogram. The histogram is used to determine the type of the original, and the background removal threshold is calculated accordingly.
  • Page 47 • The control flow for auto density (AE) control is shown below. Start Key ON <Realtime Scanning> The scanner starts normal scanning of the document. (The copy cycle starts.) The image data read by the CCD sensor is transmitted (in parallel) from the Shading Correction block to the Histogram block, where the data val- ues are sampled, and the samples are counted in order to generated the reflectivity histogram.
  • Page 48 ¿ The gradation curve of the density-corrected data is adjusted in accordance with the Image Quality mode so as to enhance the reproduction of the high- density areas. The above processing helps retain density detail within characters and other high-density areas, while removing the fogging component from the low-den- sity areas.
  • Page 49 2) Manual Density Control • If the copier is set to manual density mode, the user can set copy density to any of nine settings (or “steps”) at the control panel (touch panel). • Based on the user’s setting, the CPU of the PWB-IB transmits a predetermined background removal threshold value to the IR Density Correction block, which then implements density correction accordingly.
  • Page 50 ¿ The threshold value is transmitted from the PWB-IB to the IR Density Correc- tion block. This block then corrects the image density of incoming data in accordance with the relation shown below. Output X=aχ-b X: Image density value after density correction a: 1 χ: Image density value before density correction Input...

  • Page 51: Detecting Of Original

    1155SBM0805A 8-5. Detection of Original 1) Detection • The detection system detects the original’s size, position, and skew. • Detection operation is illustrated below. <Inch-based Area> <Metric Area> 1155M059AA 1155M059AA 1155M099AA ¿: Detection of Original ¿: Detection of Original ¡: Scanning of Original ¡,¬: Return Ð: Scanning of Original Detection is achieved using the EDH-1 pressure pad, the Original Detecting Filter,...
  • Page 52 <Detection Conditions> The system can detect originals that meet the following conditions. Edge coloration (wavelength) is between 400nm and 490nm, provided that average reflectivity of this color is at least 39%. Shape is rectangular. Note that the system cannot detect the following types of original: •...
  • Page 53 2) Detection System • The following diagram shows the spectral reflectivity of the (yellow) EDH-1 pres- sure pad and the spectral transmissitivity of the original detecting filter. Spectral Reflectivity/ Transmissivity Transmitting Area Cutoff Area Filter Transmissivity Yellow Reflectivity Threshold Average Yellow Reflectivity (nm) Wavelength (Visible Range) 1155M108CA...
  • Page 54 • The reflected light that passes through the filter reaches the CCD Sensor, which converts the light into an electrical signal (image data signal). This signal then passes into the Digital Image Processing Board, as illustrated below. EDH-1 Original Original Glass Lens PWB-IA Original Detecting...
  • Page 55 <Calculation of Original’s Skew> θ Original 1155M111CA • The skew is calculated from the main-scan and subscan edge values, as follows. (1) Skew = (B-A) / (M-L) = tanθ • Relation (1) gives the angle of tilt. • If the user has set the skew warning mode to ON (“user’s choice” setting), then the copier will output a warning if the detected skew is beyond the acceptable limit.
  • Page 56 3) Original Detecting Filter Mechanism • Switching of the Original Detecting Solenoid causes the Original Detecting Filter to flip up and down, as shown below. Original Original Detecting Solenoid Detecting Filter (SL7) Cushion (*1) 1155M031AA *1: The cushion muffles the sound of the filter dropping down (when the Original Detecting Solenoid switches OFF).
  • Page 57 4) ON/OFF Control of Original Detecting Solenoid • The Original Detecting Solenoid is controlled by the Original Detecting Solenoid remote signal output by the Digital Image Processing Board. <Original Detecting Solenoid ON Timing> ¿ At Power Switch ON, or at CPU Reset •...
  • Page 58 1155SBM0806A 8-6. Drive Mechanism for Scanner and Mirrors Carriage <Scanner> • As the scanner moves, light from the exposure lamp projects evenly along the original, reflects off the original, bounces off Mirror #1, and moves to Mirrors #2 and #3. •...

  • Page 59: Scanner-Motor Drive Control

    1155SBM0807A 8-7. Scanner Motor Drive Control <Overview> • The Scanner Motor is a DC server motor. The motor is controlled by PWM (pulse width modulation); that is, the speed controlled by varying the average width of the motor drive pulse. •...

  • Page 60: Scanner Movement

    1155SBM0808A 8-8. Scanner Movement <Operation in EDH-1 Mode> • At Start Key ON ¿ Original Registration Roller EDH-1 : Start transport of orig- inal sheet. IR Section : Turn the Exposure Scanner reference Lamp on, complete position warmup, and then start scanner move- Scanner ment.
  • Page 61 <Operation in Manual Placement Mode> • At Start Key ON ¿ Home position for hand-placed original IR Section: Set the Exposure Scanner Lamp on, complete Original reference warm-up, and then position start scanner move- Scanner ment. Main Unit: Gain/shading If APS : Standby 1155M067AA adjustment position...

  • Page 62: Ccd And Cooling-Fan Motors

    1155SBM0809A 8-9. CCD and IR Cooling Fan Motors • Fans are installed to prevent the IR section from overheating as a result of the heat generated by the Exposure Lamp and other components. The CCD Cooling Fan Motor draws in air from the outside. The IR Cooling Fan Motor passes heated air to the Ozone Ventilation Fan Motor, which then passes it out of the unit.

  • Page 63: Memory Section

    1155SBM0900A MEMORY SECTION Memory Board (PWB-B) Memory Section 1155M045AA • The Memory Board contains built-in memory. This memory enables rapid storage and handling of the large quantities of image data generated from the originals. • The memory receives the image data from the IR section. The memory allows for efficient coordination between the IR section and the printer section, thereby improving the copying performance.
  • Page 64 result to the PH section. Memory Section IR Section ¿ Input Image Memory (2MB) ¡ Compression Circuitry ¬ Encoded Memory (16MB) Ð Expansion Circuitry ƒ Output Image Memory(12MB) PH Section ¿ Input Image Memory • Stores binarized image data, which then moves into the next block for further compression.
  • Page 65 ¬ Encoded Memory • Stores the encoded (compressed) data received from the previous block. • Consists of 16MB of DRAM. Capable of holding data for up to about 200 pages of standard A4 originals. Ð Expansion Circuitry • This block expands the data from the Encoded Memory block (restores the data to the form it had prior to compression by the Compression Circuitry block).

  • Page 66: Ph Section

    1155SBM1000A PH SECTION Image data from the memory section is corrected in accordance with the PH copy characteristics. The laser diode (LD) then generates the latent image defined by the corrected data onto the PC drum. This copier is provided with two types of Laser Units, one for 400 dpi and the other for 600 dpi.
  • Page 67 PH (Printer Head) Components 1155M008AA Polygon Motor (M4) SOS Sensor Board (PWB-G) Cylindrical Lens Return Mirror 600dpi LD/Collimeter Unit Long Cylinder Lens Beam Splitter SOS Mirror 400dpi LD/Collimeter Unit 10. f-θ Lenses M-48...

  • Page 68: Ph Image Processing System

    1155SBM1001A 10-1. PH Image Processing System The PH image processing system is composed of the following blocks. These blocks implement a variety of types of corrective processing, as described below. Memory: PWB-B 1. PH-I/F: PWB-J 2. Bit Expansion: PWB-J 3. Screen Processing: PWB-J 4.
  • Page 69 1. PH-I/F: PWB-J Blocks out external noise during transfer of image density data from the memory section (PWB-B) to the PH section. 2. Bit Expansion: PWB-J If image quality is set to “photo” mode, this block expands binary data values into 8-bit data values.

  • Page 70: Laser Emission Timing (Sos Signal

    1155SBM1002A 10-2. Laser Emission Timing (SOS Signal) The SOS-EXE ENBL signal from the Master Board forces the firing of the laser. The laser beam moves to the polygon motor, then through the lenses, then reflects off the SOS Mirror and hits the SOS Sensor Board, which generates the SOS signal. Polygon Motor (M4) SOS Sensor Board (PWB-G)
  • Page 71 PC Drum Sensor SOS Mirror Board A to B: LD force-ON area B to C: LD OFF 1155M087CA C to D: Laser beam area according to the image data 1155M087CA Laser Diode (LD) SOS Signal A : Varies depending on the image area (paper size and zoom ratio). 1155T41MCB M-52...

  • Page 72: Developing Unit

    1155SBM1100A DEVELOPING UNIT This copier employs the New Micro-Toning developing system equipped with three Sleeve/Magnet Rollers. The toner fed up to the Toner Replenishing Sleeve/Magnet Roller is supplied to the turning 1st and 2nd Sleeve/Magnet Rollers. From there, it is supplied to the electro- static latent image on the surface of the PC Drum to form a visible, developed toner image of the original.

  • Page 73: Developing Unit Drive Mechanism

    1155SBM1101A 11-1. Developing Unit Drive Mechanism Drive for the Developing Unit comes from Developing Unit Drive Motor. Coupling Gear 2 is spring-loaded. If the protruding part of Coupling Gear 1 makes contact with that of Coupling Gear 2 when the PC Unit is slid into the copier, spring- loaded Coupling Gear 2 is pushed back toward the rear of the copier allowing the PC Unit to be slid into position.

  • Page 74: Magnetic Pole Positioning

    1155SBM1102A 11-2. Magnetic Pole Positioning Each Magnet Roller of the Toner Replenishing, 1st, and 2nd Sleeve/Magnet Rollers is made up of five magnets asymmetrically packed. The Bias Plate at the front of the Developing Unit ensures that the angle of principal magnetic pole N1 of the 1st Sleeve/Magnet Roller and that of principal magnetic pole S1 of the 2nd Sleeve/Magnet Roller will not be changed with respect to the center of the PC Drum.
  • Page 75 <Toner Replenishing Sleeve/Magnet Roller> N3, S2 : The developer fed by the Bucket Roller is attracted onto the surface of the Sleeve Roller. : The developer brush is formed by this pole. The height of the brush is mod- erate before the brush is regulated by the Doctor Blade. : This pole functions to hold the developer brush firmly onto the surface of the Sleeve Roller as it is fed onto the point of supply to the 1st Sleeve/Magnet Roller.

  • Page 76: Developing Bias

    1155SBM1103A 11-3. Developing Bias A negative voltage (Vb = Developing Bias voltage) is applied to the Sleeve Roller to prevent a foggy background on the copy. The amount of toner attracted onto the sur- face of the PC Drum depends on how much lower the PC Drum surface potential (Vi) is than Vb (i.e., the potential difference).

  • Page 77: Atdc Sensor

    1155SBM1104A 11-4. ATDC Sensor During operation, the ATDC sensor detects the T/C ratio (toner-to-carrier ratio) in the developer mixing chamber. If the detected ratio is below the target level of 4%, the copier will add toner. Note that the reference T/C ratio of 4% (at setup) produces an ATDC sensor output of 2.5V.
  • Page 78 <Toner Replenishing Control by ATDC Sensor> In general, the ATDC sensor detects the T/C ratio once every copy. The detected value is compared against the target value (generally 4%, but may vary in accordance with image stabilizing control). If the result indicates that resupply is required, the Sub-hopper Toner Replenishing Motor is activated so as to supply the appropriate amount.

  • Page 79: Sub Hopper Toner Replenishing Mechanism

    1155SBM1105A 11-5. Sub Hopper Toner Replenishing Mechanism Sub Hopper Toner Replenishing Motor is energized for the toner replenishing time which is calculated based on the ATDC Sensor output voltage (T/C ratio) and the size of the paper being fed through the copier. Sub Hopper Toner Replenishing Roller...

  • Page 80: Sub-Hopper Toner Empty Detection Mechanism

    1155SBM1106A 11-6. Sub-hopper Toner Empty Detection Mechanism Detection is effected by a magnet that rotates together with the sub-hopper's toner agitation lever. When toner falls to a low level, the magnet will pass close to switch Sub-hopper Toner Empty Switch on each rotation, causing the switch to go repeat- edly ON and OFF.

  • Page 81: Main Hopper Toner Replenishing Mechanism

    1155SBM1107A 11-7. Main Hopper Toner Replenishing Mechanism When toner-empty ON/OFF pulses are detected in the Sub Hopper, Main Hopper Toner Replenishing Motor is energized to turn the Toner Bottle, thereby supplying toner from the Main Hopper to Sub Hopper. The Home Position Detecting Plate fitted to the coupling and Toner Bottle Home Position Sensor ensure that the Toner Supply Port in the Toner Bottle is positioned at the top whenever the Toner Bottle is stopped.

  • Page 82: Coupling Locking Mechanism

    1155SBM1108A 11-8. Coupling Locking Mechanism The coupling is locked in position to prevent it from moving when the Toner Bottle is removed or installed. When the Toner Bottle Holder is swung out to the front, the ten- sion of the spring causes the Coupling Lock Lever to hook the coupling. When the holder is swung into position, the bottom of the Coupling Lock Lever is pushed by the protrusion of the holder, disengaging the Coupling Lock Lever from the coupling.

  • Page 83: 11-10.Toner Suction Fan Motor

    1155SBM1110A 11-10. Toner Suction Fan Motor This copier is provided with a Suction Duct under the 2nd Sleeve/Magnet Roller. Toner particles from the Developing Unit are drawn in through the Suction Duct so that they will not fall over the Pre-Image Transfer Guide Plate and Image Transfer/ Paper Separator Coronas Unit.

  • Page 84: Paper Take-Up/Feed Section

    1155SBM1200A PAPER TAKE-UP/FEED SECTION Construction 34 35 1075M106AB Synchronizing Roller 24. Main Tray Paper Leading Edge Sensor PC2 25. Shifter Transport Timing Belt Transport Rollers 26. Shifter Transport Roller Transport Roller Sensor PC1 27. Shift Tray Manual Bypass Separator Roll 28.

  • Page 85: Drawer-In-Position Detection

    1155SBM1201A 12-1. Drawer-in-Position Detection When the 1st/2nd Drawer is slid into the copier, the light blocking plate in the rear of the drawer blocks 1st/2nd Drawer Set Sensor ( The copier then knows that the drawer has been slid into position. 1st/2nd Drawer Set Sensor (PC44/45) Light Blocking Plate 1075M107AA...

  • Page 86: Paper Empty Detection

    1155SBM1202A 12-2. Paper Empty Detection (1) Metric Areas A paper empty detection in the 1st and 2nd Drawers is detected by 1st Drawer Paper Empty Sensor and 2nd Drawer Paper Empty Sensor, respectively. (2) Inch Areas A paper empty detection in the 1st and 2nd Drawers is detected by 1st Drawer Paper Empty Sensor and 2nd Drawer Paper Empty Sensor, and 1st Drawer Paper Empty Key and 2nd Drawer Paper Empty Key, respectively.
  • Page 87 CONTROL SIGNAL UNBLOCKED BLOCKED WIRING DIAGRAM PC48 PJ15F-8B H-23 PC49 PJ14F-8B G-23 PWB-E1 PJ5A-1A A~B-22~23 PWB-E2 PJ5A-3A C~D-22~23 M-68...

  • Page 88: Paper Lifting/Lowering Mechanism

    1155SBM1203A 12-3. Paper Lifting/Lowering Mechanism 1) Metric Areas When the drawer is slid into the copier, the flat spring at the rear of the drawer raises the Lift-Up Motor Assy and, as a result, Gear A on the Paper Lifting Arm shaft meshes with the Lift-Up Motor Assy gear.
  • Page 89 During Copy Cycle Paper is consumed as copies are made. ↓ As the Paper Take-Up Roll lowers, 1st/2nd Drawer Lift-Up Sensor is unblocked ( ↓ 1st/2nd Drawer Lift-Up Motor is energized to raise the paper stack, thus blocking the 1st/2nd 4425M006AA Drawer Lift-Up Sensor ( ↓...
  • Page 90 2) Inch Areas When the drawer is slid into the copier and, if 1st/2nd Drawer Paper Empty Sen- sor and 1st/2nd Drawer Paper Empty Key are blocked ( ), any of the following operations will energize 1st/2nd Drawer Lift-Up Motor to turn forward, thus rais- ing the paper stack.

  • Page 91: Paper Stack Lowering/Drawer Locking Mechanism

    1155SBM1204A 12-4. Paper Stack Lowering/Drawer Locking Mechanism (Inch Areas) When the Paper Descent Key is pressed or the drawer runs out of paper during a copy cycle, the Lift-Up Motor is energized to turn backward to lower the Paper Lift- ing Plate.

  • Page 92: Inch Area

    1155SBM1205A 12-5. Paper Level Detection The amount of paper still available for use, or the paper level, of the 1st and 2nd Drawer is detected by 1st/2nd Drawer Lift-Up Motor Pulse Sensor and a pulse disk. The pulse disk is mounted on the shaft of the intermediary gear that transmits drive from the Lift-Up Motor.

  • Page 93: Universal Tray (2Nd Drawer) Paper Size Detection

    1155SBM1206A 12-6. Universal Tray (2nd Drawer) Paper Size Detection The 2nd Drawer is a Universal Tray that automatically detects the size of the paper loaded in it. Both the length (in the feeding direction) and width (in the crosswise direction) of the paper are detected and the copier CPU determines the paper size based on the combination of the two readings.
  • Page 94 Detectable Paper Sizes and ON/OFF Combinations of Paper Size Detecting Switches Paper Size Detecting Switches Width Paper Size Inch x Length Length Width Name Equivalent (mm) 148×210 − − (5-1/2”×8-1/2”) Voltage across (Invoice L)* (140×216) resistors Greater − − − 182×257 (4.23V) −...

  • Page 95: 3Rd Drawer-In-Position Detection

    1155SBM1207A 12-7. 3rd Drawer in Position Detection When the 3rd Drawer is slid into the copier, the light blocking plate in the rear of the drawer blocks 3rd Drawer Set Sensor ( ) and the copier determines that the 3rd Drawer has been slid into it.

  • Page 96: 3Rd Drawer Paper Empty Detection

    1155SBM1208A 12-8. 3rd Drawer Paper Empty Detection Main Tray A paper-empty condition of the Main Tray is detected by 3rd Drawer Main Tray Paper Empty Board and 3rd Drawer Paper Empty Sensor. 3rd Drawer Main Tray Paper Empty Board detects a paper-empty condition at a tim- ing when the 3rd Drawer is slid into the copier (i.e., when the Main Tray is at its lower limit position).
  • Page 97 CONTROL SIGNAL BLOCKED UNBLOCKED WIRING DIAGRAM PWB-E PJ2H-6A E~F-25 CONTROL SIGNAL BLOCKED UNBLOCKED WIRING DIAGRAM PC50 PJ13F-8B F-23 PC31 PJ2H-4A H-25 M-78...

  • Page 98: Main Tray Paper Stack Lifting/Lowering Mechanism

    1155SBM1209A 12-9. Main Tray Paper Stack Lifting/Lowering Mechanism Main Tray Paper Stack Lifting/Lowering Mechanism The Main Tray is raised and lowered by 3rd Drawer Elevator Motor. When the 3rd Drawer Elevator Motor turns forward or backward, the wires at the front and rear are wound around, or fed off, the pulleys to raise or lower the Main Tray.
  • Page 99 When Drawer is Slid in 3rd Drawer Set Sensor is blocked( ↓ 1sec. 3rd Drawer Lift-Up Sensor (PC42) 3rd Drawer Paper Descent Key is pressed. (For inch areas) ↓ 3rd Drawer Elevator Motor is energized to raise the Main Tray. ↓...
  • Page 100 The Main Tray is Lowered When: (1) 3rd Drawer Paper Empty Sensor is unblocked ( ) during a paper take-up sequence. (2) 3rd Drawer Paper Descent Key is pressed. (3) Power Switch is turned ON when the Main Tray is located at a position other than its upper and lower limits.
  • Page 101 1155SBM1210A 12-10. 3rd Drawer Paper Level Detecting Mechanism The amount of paper still available for use, or the paper level, of the Main Tray is detected using 3rd Drawer Elevator Motor Pulse Sensor and a pulse disk which detect the speed of 3rd Drawer Elevator Motor. *Paper Level Indicator When 3rd Drawer is Slid in Counting of the number of pulses is started...

  • Page 102: 12-11.Shifter Drive Mechanism

    115SBM1211A 12-11. Shifter Drive Mechanism The Shifter is driven by 3rd Drawer Shift Motor via a belt. As the 3rd Drawer Shift Motor is energized, the Shifter transfers the paper stack on the Shift Tray to the Main Tray. The Shifter is at its home position when 3rd Drawer Shifter Home Position Sen- sor is blocked ( ).

  • Page 103: 12-12.Shift Gate Drive Mechanism

    1155SBM1212A 12-12. Shift Gate Drive Mechanism The Shift Gate serves as a wall to block the paper on the Shift Tray from moving toward the Main Tray. When the paper stack on the Shift Tray needs to be moved onto the Main Tray, the Shift Gate is retracted.

  • Page 104: 12-13.3Rd Drawer Lock/Release

    1155SBM1213A 12-13. 3rd Drawer Lock/Release Lock When the 3rd Drawer is slid into the copier, the locking pawl in the rear of the copier is hooked onto the locking shaft in the rear of the 3rd Drawer. Release Press 3rd Drawer Paper Descent Key. ↓...

  • Page 105: U.s.a., And Canada

    1155SBM1214A 12-14. Paper Dehumidifying Heaters (Except Europe, U.S.A., and Canada) When the paper in the drawer grows damp, its electrical resistance decreases, which degrades image transfer efficiency. As a result, void areas and other image problems occur on the copy. Upper and Lower Paper Dehumidifying Heaters are provided to prevent this prob- lem.

  • Page 106: 12-15.Drawer Paper Take-Up Mechanism

    1155SBM1215A 12-15. Drawer Paper Take-Up Mechanism <Paper Take-Up Mechanism> Drive for the paper take-up sequence is transmitted from Paper Take-Up Motor when 1st/2nd/3rd Drawer Paper Take-Up Clutch is energized. Paper Take-Up Motor (M21) Paper Take-Up Roll 1st/2nd/3rd Drawer Paper Take-Up Clutch (CL3/4/5) Paper Feed Roll Paper Separator Roll 1075M114AA...
  • Page 107 <Paper Separating Mechanism> The paper separating mechanism employs a torque limiter to ensure that only the top sheet of paper is fed in by separating the second sheet of paper from the top one. This is accomplished by the difference in friction coefficient between the Feed and Separator Rolls.
  • Page 108 <Paper Pressure Release Mechanism> (Except 3rd Drawer) If the drawer is pulled out when a sheet of paper is pinched between the Feed and Separator Rolls, that sheet of paper is left inside the copier and it becomes difficult to remove it. This copier is therefore provided with a mechanism that releases the Separator Roll from the Feed Roll when the drawer is slid out of the copier.
  • Page 109 <Paper Take-Up Motor M21 Control> Paper Take-Up Motor is a DC motor* and controlled by the Paper Take-Up Motor Remote signal output from Master Board. Control Timing (Multi copy cycle for 2 copies) T1: 75msec. T2: 6msec. 1155T25MCA CONTROL SIGNAL WIRING DIAGRAM PJ2F-2 H-19...
  • Page 110 <Paper Take-Up Interval Control> The Paper Feed Roll and Separator Roll may sometimes fail to separate the subse- quent sheet of paper properly and the leading edge of that paper may be ahead of the Feed and Separator Rolls inside the copier. If the paper take-up sequence for that paper is started in this condition, the distance between the preceding and the current sheet of paper will be shorter than normal, resulting in a misfeed.

  • Page 111: 12-16.Vertical Transport Drive Mechanism

    1155SBM1216A 12-16. Vertical Transport Drive Mechanism Each Vertical Transport Roller is driven by Vertical Transport Motor. Vertical Transport Motor (M22) Vertical Transport Rollers 1075M118AB Timing Chart 1155T26MCA T1: 62msec. CONTROL SIGNAL WIRING DIAGRAM PJ17F-3~6 Pulse Output M-92...

  • Page 112: 12-17.Multi Bypass Table

    1155SBM1217A 12-17. Multi Bypass Table 1) Construction The Multi Bypass Table consisting of the following parts is fitted to the Right Door of the copier. Rear of Copier 1075M135AB Front of Copier Manual Feed Paper Empty Sensor PC6 Manual Bypass Table Manual Bypass Separator Roll Manual Feed Size Detecting Resistor Manual Bypass Feed Roll...
  • Page 113 2) Manual Bypass Paper Take-Up Drive Mechanism Drive for paper take-up from the Multi Bypass Table is transmitted from Transport Motor via Manual Feed Paper Take-Up Clutch to the Manual Bypass Feed and Take-Up Rolls. Here is the drive train. Transport Motor (M23) Manual Feed Paper...
  • Page 114 3) Manual Take-Up Roll Pressure Mechanism The Manual Bypass Take-Up Roll is operated as follows when Manual Feed Paper Pick-Up Solenoid is energized and deenergized. The two Paper Stoppers, which block the leading edge of the paper stack loaded on the Multi Bypass Table, are also operated as follows as the Manual Feed Paper Pick-Up Solenoid is energized and deenergized.
  • Page 115 5) Manual Bypass Paper Empty Detection The Multi Bypass Table is equipped with Manual Feed Paper Empty Sensor which detects a sheet of paper on the Multi Bypass Table. Manual Feed Paper Empty Sensor (PC6) Manual Bypass Take-Up Roll 1075M140AA <When Paper is Placed>...
  • Page 116 6) Manual Bypass Take-Up Control <Multi Copy Cycle for 2 Copies> 1155T27MCA T1: 67msec. T2: 87msec. T3: 76msec. CONTROL SIGNAL WIRING DIAGRAM PJ2A-2B I-29~30 SL1 DOWN PJ8A-2B H-15 SL1 UP PJ8A-1B H-15 M-97...

  • Page 117: Transport/Syschronizing Rollers Unit

    1155SBM1300A TRANSPORT/SYNCHRONIZING ROLLERS UNIT The Transport/Synchronizing Rollers Unit can be removed as an assembly for easy serviceability. Each of the Transport and Synchronizing Rollers is driven by a stepping motor ded- icated to it so that the paper is properly fed by the Transport Rollers and a loop is positively formed in the paper before the Synchronizing Rollers.

  • Page 118: Paper Dust Remover

    1155SBM1301A 13-1. Paper Dust Remover The Upper Transport Roller and Upper Synchronizing Roller are each equipped with a Paper Dust Remover to prevent paper dust from sticking to the surface of the PC Drum. Since these two rollers are covered with a vinyl tubing, triboelectric charging occurs as the rollers turn in contact with the Paper Dust Remover.

  • Page 119: Transport Roller Drive Control

    1155SBM1303A 13-3. Transport Roller Drive Control The Transport Rollers are driven by Transport Motor. Transport Motor, a stepping motor, is controlled by energizing the four internal coils using pulse signals output from Drawer S/P Board, as controlled by Master Board. <Multi Copy Cycle for 3 Copies>...

  • Page 120: Synchronizing Roller Drive Mechanism

    1155SBM1304A 13-4. Synchronizing Roller Drive Mechanism The Upper Synchronizing Roller is driven by the Lower Synchronizing Roller. The Lower Synchronizing Roller is driven by Synchronizing Motor through a gear train. Lower Synchronizing Roller Synchronizing Motor (M5) 1155M044AA 1155SBM1305A 13-5. Synchronizing Roller Drive Control Synchronizing Motor, a stepping motor, is controlled by energizing the four internal coils using pulse signals output through the control by Master Board.

  • Page 121: Image Transfer And Paper Separation

    1155SBM1400A IMAGE TRANSFER AND PAPER SEPARATION Image Transfer The Image Transfer Corona applies a DC negative corona emission to the underside of the paper thereby attracting the positively charged toner onto the surface of the paper to form a visible, developed image of the original. Paper Separation The Paper Separator Corona showers the underside of the paper with both positive and negative charges so that the paper can be easily separated from the PC Drum.

  • Page 122: Ozone Filter

    1155T30MCA CONTROL SIGNAL WIRING DIAGRAM PJ3A-5A I.T. Corona PJ3A-2A P.S. Corona 1155SBM1401A 14-1. Ozone Filter Ozone Produced by the Image Transfer/Paper Separator Coronas is absorbed by the Ozone Filter from the air being drawn out of the copier by Suction Fan Motor. 1155M015AA M-103...

  • Page 123: Cleaning Mechanism

    1155SBM1402A 14-2. Image Transfer/Paper Separator Corona Wires Cleaning Mechanism The Image Transfer/Paper Separator Coronas are provided with a mechanism that automatically cleans its corona wires. It effectively removes from the wires any toner and dust particles which would otherwise cause uneven charging, white streaks on copies, and charge leak.
  • Page 124 <Control> The Image Transfer/Paper Separator corona wires are automatically cleaned under the following conditions. The cleaning function is, however, disabled if the “Charge Wire Cleaning” function of “System Input” available from the Tech. Rep. mode has been set to “Off”. (1) A period of 500 msec.

  • Page 125: Cleaning Unit

    1155SBM1500A CLEANING UNIT The Cleaning Blade is pressed tightly against the surface of the PC Drum and scrapes off any toner remaining on the surface after image transfer and paper sep- aration have been completed. The scraped-off toner falls into the Toner Conveying Coil and is conveyed by that Coil to the Toner Chute and into the Toner Collecting Bottle at the back of the copier.

  • Page 126: Cleaning Blade Moving Mechanism

    1155SBM1501A 15-1. Cleaning Blade Moving Mechanism The Cleaning Blade is moved back and forth while the PC Drum is turning to ensure that all residual toner is scraped cleanly off the surface of the PC Drum, thereby preventing the PC Drum as well as Cleaning Blade from deteriorating. Drive from PC Drum Drive Motor turns the Lateral Movement Cam.

  • Page 127: Toner Conveying/Collecting Mechanism

    1155SBM1502A 15-2. Toner Conveying/Collecting Mechanism The toner which has been scraped off the surface of the PC Drum by the Cleaning Blade is conveyed to the rear of the copier by the Toner Conveying Coil and dropped into the Toner Collecting Bottle through the Toner Chute. The Toner Conveying Coil is driven by PC Drum Drive Motor.

  • Page 128: Pc Drum Paper Separator Fingers Moving

    1155SBM1503A 15-3. PC Drum Paper Separator Fingers Moving Mechanism <Mechanism> The PC Drum Paper Separator Fingers, together with the Paper Separator Corona, ensure good separation of paper from the PC Drum after image transfer has taken place. The Paper Separator Fingers are made of metal with their tips ground to mini- mize damage to the surface of the PC Drum.
  • Page 129 = Finger Pressing Motion = The PC Drum Paper Separator Fingers are pressed against the surface of the PC Drum by Separator Finger Solenoid as it is energized at a timing to separate paper from the surface of the PC Drum. When the Separator Finger Solenoid is energized, part A of the Actuating Lever is raised.
  • Page 130 = Finger Back-and-Forth Motion = The PC Drum Paper Separator Fingers are moved in the crosswise direction by the eccentric cam with ratchet when Separator Finger Solenoid is operated. When the Separator Finger Solenoid is energized, the Actuating Lever is moved in the direction of arrow C.

  • Page 131: Main Erase Lamp

    1155SBM1600A MAIN ERASE LAMP Main Erase Lamp neutralizes any surface potential remaining on the surface of the PC Drum after cleaning. It consists of nine incandescent tungsten-filament lamps connected in a series inside a glass tube. Main Erase Lamp (LA1) Main Erase Lamp (LA1) 1075M093AA 1155M016AA...

  • Page 132: Transport Section

    1155SBM1700A TRANSPORT SECTION Rotation of Suction Fan Motor results in the paper separated from the PC Drum being drawn onto the turning Suction Belts. As a result, the paper is smoothly car- ried to the Fusing Unit. The Suction Belts are turned by the Suction Belt Drive Roller which is driven by PC Drum Drive Motor.

  • Page 133: Fusing Unit

    115SBM1800A FUSING UNIT The Fusing Unit fixes permanently the developed image to the paper by applying heat to the toner and paper. A given pressure is also applied between the Upper and Lower Fusing Rollers, thereby providing a certain width of area of contact between the two rollers.

  • Page 134: Drive For The Fusing Unit

    1155SBM1801A 18-1. Drive for the Fusing Unit The Fusing Unit is driven by Fusing Motor fitted to the Fusing Drive Unit in the rear of the copier. Upper Fusing Roller Drive Gear Upper Fusing Roller Lower Fusing Roller Clutch Spring Fusing Motor (M3) The gears enclosed by are on the copier frame.

  • Page 135: Fusing Rollers Pressure Mechanism

    1155SBM1802A 18-2. Fusing Rollers Pressure Mechanism To ensure that there is a certain width of area of contact between the Upper and Lower Fusing Rollers, a pressure spring is installed to the front and rear Pressure Holders. The Lower Fusing Roller is held pressed against the Upper Fusing Roller at all times.

  • Page 136: Cleaning Web Take-Up Mechanism

    1155SBM1804A 18-4. Cleaning Web Take-Up Mechanism The Cleaning Web wound around the Web Roller is taken up by the Web Take-Up Roller which is driven by Cleaning Web Drive Motor. Cleaning Web Drive Motor is turned about one turn in every 7 to 14 copies made to take up the Cleaning Web.* * The length of the Cleaning Web taken up per one revolution of the Cleaning Web Drive Motor varies depending on the amount of Cleaning Web which has already...

  • Page 137: Fusing Temperature Control

    1155SBM1805A 18-5. Fusing Temperature Control The Fusing Unit is provided with two heater lamps, each turning ON to provide fus- ing temperature control at a particular timing so that power consumption can be minimized. Controlled Part Name Symbol Function Temperature Turns ON during the warming-up cycle, a copy cycle, and in the standby state fol- Upper Fusing Roller...
  • Page 138 <Temperature Control> Upper Fusing Roller Thermistor and Lower Fusing Roller Thermistor detect the surface temperatures of the corresponding rollers. They provide analog voltage inputs to Master Board for the control of fusing temperature. Detection of Abnormally High Temperature When the Upper Fusing Roller Thermistor detects an abnormally high temperature (215°C or higher), Master Board outputs a signal to turn OFF Main Relay, thus cutting off power to the heater lamps.

  • Page 139: Cpm Control

    1155SBM1806A 18-6. CPM Control The CPM (copies/minute) control is provided to keep good fusing performance even in multi-copy cycles and with the system power sourced from a single power outlet. <What is CPM Control?> As noted earlier, only Upper Fusing Roller Heater Lamp is ON during a copy cycle.
  • Page 140 Multi-Copy Cycle Immediately After Warm-up in Early Morning (normal CPM: 62) 1155M082CA M-121...

  • Page 141: Exit/Duplex Switching Section

    1155SBM1900A EXIT/DUPLEX SWITCHING SECTION This section determines the path of the sheet coming from the fusing section. The sheet can be directed along either of two paths: Out onto the upper copy-exit tray (ejection), or Toward the lower copy-exit tray or duplex unit. Front View Paper Exit Switch (S10) Exit Switching Lever...

  • Page 142: Exit/Duplex Switching Mechanism

    • Exit/Duplex Switching Mechanism <Overview> The Exit/Duplex Switching Solenoid moves the switching levers so as to direct paper either out into the upper copy-exit tray or else onward toward the lower copy-exit tray or the duplex unit. Paper Exit Roller To Upper Copy-Exit Tray Switching lever To Lower Copy-Exit...

  • Page 143: Turnover Section

    1155SBM2000A TURNOVER SECTION This section receives the sheet transported from the Exit/Duplex Switching Section, turns the sheet over, and sends it out trailing-edge-first. The sheet then proceeds either to ejection into the Lower Paper-Exit Tray or else transport to the Duplex Unit. Exit/Duplex Switching Section...

  • Page 144: Drive Mechanism

    1155SBM2001A 20-1. Drive Mechanism Turnover Transport Rollers #1 and #2 are driven by the Fusing Motor by means of gears on the Duplex Unit. The Turnover Roller is controlled independently by the Turnover Motor. Turnover Trans- port Roller #1 Turnover Trans- port Roller #2 Turnover Feed Entry Sensor (PC11)

  • Page 145: Turnover Control

    1155SBM2002A 20-2. Turnover Control The Turnover Motor is a step motor. Forward rotation transports paper downward, while reverse rotation transports paper towards the lower-paper-exit tray/duplex unit side. The Turnover Feed Entry Sensor controls the timing of the Turnover Motor forward/ reverse switching.

  • Page 146: Roller Separation Control

    1155SBM2003A 20-3. Roller Separation Control This control prevents overlapped turnover during multiple copies. The control oper- ates by disengaging the Transport Roller Drive Roller from the Transport Roller in the event that the leading edge of a copied sheet arrives at the Transport Roller before the trailing edge of the previous sheet has cleared this roller.

  • Page 147: Lower-Paper-Exit Switching Section

    1155SBM2100A LOWER PAPER EXIT SWITCHING SECTION This section determines the path of the sheet coming from the turnover section. Specifically, the section directs the sheet to either of the following. Ejection at the lower copy exit tray (if the copier is operated in folded sorting mode).

  • Page 148: Paper-Exit Switching Section

    • Paper Exit Switching Section <Overview> The Duplex Unit Turnover Exit Solenoid selects the paper path by moving the switching lever. Depending on the Duplex Unit Turnover Exit Solenoid state (ON or OFF), the sheet moves either to the Lower Paper Exit Copy Tray (ejection) or else to the Turnover Switching Section.

  • Page 149: Duplex Unit

    1155SBM2200A DUPLEX UNIT The Duplex Unit is driven by two motors: the Fusing Motor and the Vertical Trans- port Motor. Fusing Motor drives Horizontal Roller #1 by gear train, and Horizontal Roller #1 drives Horizontal Roller #2 by means of a timing belt. The sheet coming from the Transport Section is carried first by Roller #1 and then by Roller #2.
  • Page 150 <Control> CONTROL SIGNAL UNBLOCKED BLOCKED WIRING DIAGRAM PC12 PJ7A-3B G-29 PC13 PJ7A-4B F~G-29 PC56 PJ7A-5B G-29 The duplex copy rate is enhanced by using a cyclic approach. Within each cycle, a fixed number are printed on one side, then turned over and printed on the other side.

  • Page 151: Memory Backup

    1155SBM2300A MEMORY BACKUP IC1 of RAM Board connected to Master Board stores the setting/adjustment values set in the Tech. Rep. Modes as well as the counter counts. Backup Battery is mounted on the RAM Board to prevent the contents of memory from being lost when the power cord is unplugged or the RAM Board removed from the copier.

  • Page 152: Flash Memory

    1155SBM2400A FLASH MEMORY The conventional system software has been upgraded by replacing the ROMs on each printed wiring board. This copier employs a flash memory for its system con- trol IC mounted on Memory Board. Data can be easily rewritten by following the steps given below using the IC card (memory card) in which data has previously been recorded.
  • Page 153 1155SBS000AA Di620 SWITCHES ON PWBs, TECH. REP . SETTINGS...
  • Page 154 1155SBS000BA CONTENTS 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 CONTROL PANEL KEYS AND TOUCH PANEL .
  • Page 155 CONTENTS SECURITY MODE ........S-50 6-1. Security Mode Menu Screen ..... . .S-50 6-2.

  • Page 156: Precautions For Handling The Pwbs

    PRECAUTIONS FOR HANDLING THE PWBs 1151SBS0101A 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 and they are not exposed to direct sunlight. •...

  • Page 157: Control Panel Keys And Touch Panel

    CONTROL PANEL KEYS AND TOUCH PANEL * For more details, see the “Operator’s Manual” shipped with the copier. 1155SBS0201A 2-1. Control Panel Keys 1155O058EA Display Contrast Knob Panel Reset Key • • Turn to vary the brightness of the Touch Press to set the copier into the initial mode, Panel.

  • Page 158: Explanation Of The Touch Panel

    2-2. Explanation of the Touch Panel 1155SBS020201A 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. Supplementary on Keys Function Display Functi •...
  • Page 159 1149SBS020202A 2) Warning Screens • The warning screen may be a malfunction display, error display, warning display, or a caution dis- play. <Malfunction Display> <Error Display> • • A malfunction display is given when trouble An error display is given when trouble occurs occurs which cannot be corrected by the user.

  • Page 160: Pwb Location

    FUNCTIONS OF SWITCHES AND OTHER PARTS ON PWBs 3-1. PWB Location PWB-W PWB-A PWB-B PWB-S PWB-J 1155S001AC 1155SBS0302A 3-2. Master Board 1155S013AC Symbol Name Description S1-1 Used when making factory settings. S1-2 Factory-Setting Note 1: NEVER use these switches in the field. S1-3 Switches Note 2: Normally set to “OFF”...

  • Page 161: Memory Board

    Symbol Name Description Starts blinking at 1-second intervals when the Power Switch Operation Check LED is turned ON. Operation Check LED Light up when the system is ready for operation. 1155SBS0303A 3-3. Memory Board 1155S014AC Symbol Name Description Used when an expansion memory is mounted. Expansion Memory DIPSW1-1 DIPSW1-2...

  • Page 162: Phc Board

    Symbol Name Description DIPSW1-6 Used when making factory checks. Factory Check DIPSW1-7 Note 1: NEVER use these switches in the field. Switches DIPSW1-8 Note 2: Initial settings are “OFF” for all. Memory Board CPU Used to reset the CPU on the Memory Board. Reset Switch Starts blinking at 0.5-second intervals when the Power LED1...

  • Page 163: Tech. Rep. Settings Switches Board

    Symbol Name Description S1-1 S1-2 S1-3 S1-4 Used when making factory adjustments/checks. S1-5 Factory Adjustment/ Note 1: NEVER use these switches in the field. S1-6 Check Switches Note 2: Initial settings are “OFF” for all. S1-7 S1-8 S1-9 S1-10 S3-1 S3-2 Used when making factory adjustments.
  • Page 164 Symbol Name Description Resets a malfunction including those of the Exposure Lamp Trouble Reset Switch (C04XX) and fusing (C05XX). Tech. Rep Setting Switch Sets the copier into the Tech. Rep. mode. Forcibly resets a misfeed or malfunction that occurs due to Initialize Switch incorrect operation, etc.

  • Page 165: Ecc Board

    <List of Data Cleared by Switches and Points> Clearing Means Trouble Reset Initialize Memory Clear Front Door Switch Points Test Point Open/Close Data Cleared (S25) (PJ2) (TP3) Misfeed display Malfunction display (excluding Exposure Lamp and fusing malfunctions) Malfunction display − (including Exposure Lamp and fusing malfunctions) −...

  • Page 166: Image Transfer/Paper Separator Hv

    Symbol Name Description SW2-1 SW2-2 SW2-3 Used when making factory settings. Factory-Setting SW2-4 Note 1: NEVER use these switches in the field. Switches SW2-5 Note 2: All should be set to “OFF.” SW2-6 SW2-7 SW2-8 Starts blinking at 0.5-sec. intervals when the Power Switch LED1 Operation Check LED is turned ON.

  • Page 167: User's Choice Mode

    USER’S CHOICE MODE • The User’s Choice mode available through the Utility key is used to make various settings according to the user’s needs. 4-1. User’s Choice Selection Screen 1155S018CA 1155SBS0402A 4-2. User’s Choice Function Setting Procedure <Setting Procedures> 1. Press the Utility key on the control panel and then touch the “User’s Choice” key. 2.

  • Page 168: User's Choice Function Tree

    1155SBS0403A 4-3. User’s Choice Function Tree Original Copy Default Language Selected Mixed Original Detect Memory Recall Auto Paper / Auto Size Tray Priority 2in1, 4in1, Booklet Copy Zoom. Exposure Priority Default Level Output Priority User’s Choice Intelligent Sorting Criss Cross Mode Realign Warning “Small”...
  • Page 169 Confirmation Beep Universal Tray Special Paper Auto Panel Reset User’s Choice Energy Save Mode Plug-In Counter Reset Auto Shut Off Date / Time Set Print Exposure Priority Device Administrator Mode S-14...

  • Page 170: Settings In The User's Choice

    4-4. Settings in the User’s Choice [1/6] 1155SBS040401A Touch Panel Display Setting (The default is Highlighted Original Copy Default Select the type of Original Copy setting selected automatically when the copier is turned ON or Panel Reset key pressed. If “Duplex only” is selected for “Simplex /Duplex”...
  • Page 171 [2/6] 1155SBS040402A Touch Panel Display Setting (The default is Highlighted 2 in 1, 4 in 1, Select whether to enable (“ON”) or disable (“OFF”) recalling a default zoom Booklet Copy Zoom ratio for 2in1, 4in1, or Booklet Creation. Exposure Priority Specify the default exposure mode selected automatically when power is turned ON or the panel Reset key pressed.
  • Page 172 [3/6] 1155SBS040403A Touch Panel Display Setting (The default is Highlighted Realing Warning Select whether to give (“ON”) a warning message or not (“OFF”) by auto- matically detecting an original placed out of alignment on the Glass. “Small” Originals Select whether to enable (“ON”) a copy cycle or not (“OFF”) when it is initi- ated by pressing the Start key with an original of the smallest detectable size (metric areas: A5 or smaller, inch areas: Letter or smaller) placed on the Original Glass.
  • Page 173 [5/6] 1155SBS040405A Touch Panel Display Setting (The default is Highlighted Universal Tray Select the default paper size detection for the Universal Tray. Auto Detect Custom Size If Custom Size is selected, set the size for X and Y. <Metric Areas> <Inch Areas>...
  • Page 174 [6/6] 1155SBS040406A Touch Panel Display Setting (The default is Highlighted Date / Time Set Set the date and time of day for Date Printing. Year 1990 to 2089 Month 1 to 12 00 to 23 (hour) 1 to 31 Time 00 to 59 (min) Print Exposure Select the print exposure level.
  • Page 175 [6/6] Touch Panel Display Setting (The default is Highlighted − Administrator Mode Max. Copy Sets Determine the number of copies or copy sets that can be set using the 10- key Pad. 1 to 99 User Help Set the user help code to be transmitted by the user to the Center using the EP-NET.

  • Page 176: Tech. Rep. Mode

    TECH. REP . MODE • This mode is used by the Tech. Rep. to set, check, adjust, and/or program various service functions. 5-1. Tech. Rep. Mode Menu Screen 1155SBS0502A 5-2. Tech. Rep. Mode Function Setting Procedure <Setting Procedure> 1. Either one of the following two steps may be used to set the copier into the Tech. Rep. mode: 1) With the copier turned ON, press the Tech.

  • Page 177: Tech. Rep. Mode Function Tree

    1155SBS0503A 5-3. Tech. Rep. Mode Function Tree F1 Paper Passage F2 HV Output Setting F5 AIDC Sensor Printer F8 ATDC Sensor F12 Test Pattern FD Universal CD Function Opt. Mem. Check Input Image Encoded Data System Comp./ Expansion Image Memory I.R.
  • Page 178 I/O Check Address Adjust Exp. Lamp Check Focus Check Zoom (CD) Function (I.R.) Zoom (FD) / Scale Scale (CD) Scanning Check Orig. Size Adjust Orig. Size Check Pos./ Zoom (FD) Position (CD) Function (EDH) S-ADF Mode (CD) S-ADF Mode (FD) I.R.

  • Page 179: Settings In The Tech. Rep. Mode

    5-4. Settings in the Tech. Rep. Mode 1155SBS050401A 1) Function • This function allows the Tech. Rep. to make the various function tests and adjustments. <Functions> 1) Printer ....Used for making the various function tests and adjustments for the printer. 2) Image Memory..Used for making the various function tests and adjustments for image memory.
  • Page 180 Tech. Rep. Mode Function Touch Panel Display Operation F12 Test Pattern Outputs the selected test pattern either in 400 dpi or 600 dpi. Note: When Duplex is selected, the test pattern is output on paper fed out of the Duplex Unit. The following test pattern output types are available: Display Type...
  • Page 181 Tech. Rep. Mode Function Touch Panel Display Operation Input Image Checks for correct copy image by writing data in the image input memory and reading it out for exact correspondence when the copy image is defective. Note: The Touch Panel shows the percentage of processing completed of each diagnostic sequence and the number of diagnostic sequences carried out.
  • Page 182 Tech. Rep. Mode Function Touch Panel Display Operation I.R. Memory: If a faulty image occurs, this function is run to check for cor- I.R. Mem. rect image signal transfer and possible signal interruption between the IR and memory, thereby identifying the defec- tive block.
  • Page 183 Tech. Rep. Mode Function Touch Panel Display Operation Hard Disk Check Checks for proper connection and read/write operation of the Hard Disk. Note: The Touch Panel shows the percentage of sequence completed. If the check has been completed okay, it gives the message of “OK.” If a fault was encountered, the panel gives the message of “NG”...

  • Page 184: Tech. Rep. Choice

    1155SBS050402A 2) Tech. Rep. Choice • This function allows the Tech. Rep. to make the various settings and adjustments. <Functions> 1) System Set: Used for setting the choice functions concerning the operating environment of the sys- tem. 2) Printer: Used for setting the choice functions concerning the printer. <Setting Procedure>...
  • Page 185 Tech. Rep. Mode Tech. Rep. Choice Touch Panel Display Setting (The default is Highlighted Simplex / Duplex? Select whether or not to enable the setting of 1-Sided 1-Sided under Orig- inal Copy Default available from User’s Choice. Note: If “Both” is selected, 1-Sided 1-Sided becomes available as an option.
  • Page 186 Tech. Rep. Mode Tech. Rep. Choice Touch Panel Display Setting (The default is Highlighted Straight Line Use this function to make the image look soft or hard. (Not used) (Making the (Making the image look hard) image look soft) Note: The setting “0” results in no straight line screening performed. VG Adjust Set VG when a fog or void occurs in the image.

  • Page 187: System Input

    1155SBS050403A 3) System Input • This function allows the Tech. Rep. to change the fixed zoom ratios, set the paper size, define the marketing area, configure for the Key Counter, and input the telephone number. <Setting Procedure> 1. Touch [System Input] to open the System Input menu screen. 2.

  • Page 188: Counter

    1155SBS050404A 4) Counter • This function maintains the counts of the various counters, thus aiding the Tech. Rep. in performing service jobs. <Setting Procedure> 1. Touch [Counter] to open the Counter menu screen. 2. Touch the desired subfunction key to open the corresponding counter setting screen. 3.
  • Page 189 Tech. Rep. Mode Counter Touch Panel Display Operation Shows the number of misfeeds that have occurred in different parts of the system including MCBJ and MDBJ. Each counter may be reset to 0 inde- pendently of each other. <Jam Counter 1/4> Display Description MCBJ System...
  • Page 190 Tech. Rep. Mode Counter Touch Panel Display Operation <Jam Counter 4/4> Display Description Fold No. of misfeeds that occurred at the Folding Unit of the Finisher Staple No. of misfeeds that occurred at the Stapling Unit of the Finisher Finisher No.
  • Page 191 Tech. Rep. Mode Counter Touch Panel Display Operation <PM Counter 3/4> Display Description Developer 1 Time over which the PC Drum has turned (H), the number of sheets of paper as converted from the time (K) Developer 2 Time over which the PC Drum has turned (H), the number of sheets of paper as converted from the time (K) Other PM Parts 1...
  • Page 192 Tech. Rep. Mode Counter Touch Panel Display Operation Trouble Shows the number of malfunctions that have occurred in different parts of the system. Each counter may be reset to 0 independently of each other. <Trouble Counter 1/9> Malfunction Malfunction Location Location Code Code...
  • Page 193 Tech. Rep. Mode Counter Touch Panel Display Operation Trouble <Trouble Counter 6/9> Malfunction Malfunction Location Location Code Code C12A/8C Peripheral Signal C1330 VD Trouble (Output) C0602 Scanner Drive C12CX HDD Trouble C0650 Scanner Home C1300 Polygon Motor C1430 H. sync Trouble C13FX SOS Sensor <Trouble Counter 7/9>...

  • Page 194: I/O Check

    1155SBS050405A 5) I/O Check • This function is used to check the sensors and boards when a paper misfeed or malfunction occurs, thereby locating the fault. Tech. Rep. Mode I/O Check Touch Panel Display Operation I/O Check Note For details, see TROUBLESHOOTING. S-39...

  • Page 195: Edh Check

    1155SBS050406A 6) I.R. & EDH Check • This function allows the Tech. Rep. to make the various functional tests and adjustments, choice set- tings, and sensor checks as they relate to the IR and EDH. Tech. Rep. Mode I.R. & EDH Check Touch Panel Display Setting I.R.
  • Page 196 Tech. Rep. Mode I.R. & EDH Check Touch Panel Display Setting I.R. & EDH Check Function (IR) Scanning Check 1) Checks the scanning system. 2) This function is used to isolate the cause or causes of a faulty image that has occurred. Note: The Touch Panel shows “OK”...
  • Page 197 Tech. Rep. Mode I.R. & EDH Check Touch Panel Display Setting I.R. & EDH Check Function (EDH) Performs the following functions. Pos./Zoom (FD) Automatically adjusts the zoom ratio and the scanning position in the FD (sub-scanning) direction when the EDH is used and shows the results. Note 1: Run this function after making sure that the result of the Skew Check is within 1.0%.
  • Page 198 Tech. Rep. Mode I.R. & EDH Check Touch Panel Display Setting I.R. & EDH Check Function (EDH) S-ADF Mode (FD) Adjusts the scanning position (FD) for a single feed scan. Note: The Touch Panel shows “OK” if the adjustment value falls within the specified range, and “NG”...

  • Page 199: Rom Version

    Tech. Rep. Mode I.R. & EDH Check Touch Panel Display Setting I.R. & EDH Check EDH I/O Check Checks each sensor used in the EDH and shows its status with either 0 or <Procedure> 1. With the EDH I/O check screen on the Touch Panel, directly activate or deactivate each sensor.

  • Page 200: Rd Mode

    1155SBS050408A 8) RD Mode Tech. Rep. Mode RD Mode Touch Panel Display Setting RD Mode For making the initial settings of the copier for the Data Terminal. ID Code Enter a 7-digit ID code from the 10-Key Pad to enable making the following settings.
  • Page 201 Tech. Rep. Mode RD Mode Touch Panel Display Setting (The default is Highlighted RD Mode Copy Track Used to make the initial settings and various transmissions. DT Setting Enter the following data. CT-ID Enter the 4-digit ID number of the Center which has been programmed in the Center personal computer.

  • Page 202: Level History

    1155SBS050409A 9) Level History • This function is used to show the various level histories which are changed according to the operat- ing conditions of the copier and user requirements. Tech. Rep. Mode Level History Touch Panel Display Setting Level History <Fuser (Upper)>...

  • Page 203: Admin. Mode

    Tech. Rep. Mode Level History Touch Panel Display Setting Level History <AIDC Coarse Set> Displays the load resistance level of the phototransistor used in the AIDC Sensor as set with the AIDC Sensor variation adjustment. Note: The load resistance of the phototransistor can range from 0 to 15; however, actual use ranges from 0 to 12.

  • Page 204: Finisher

    1155SBS050411A 11) Finisher Tech. Rep. Mode Finisher Touch Panel Display Setting (The default is Highlighted Finisher This function allows the Tech. Rep. to make the various choice settings and sensor checks as they relate to the Finisher. I/O Check Checks the sensors of the Finisher and indicates the state of each sensor with either 0 or 1.

  • Page 205: Security Mode

    SECURITY MODE • This Function allows the Tech. Rep. to make various settings. 6-1. Security Mode Menu Screen 1155S010CA 1155SBS0602A 6-2. Security Mode Function Setting Procedure <Setting Procedure> 1. Set the copier into the Tech. Rep. mode by one of the following methods : 1) With the copier turned ON, press the Tech.
  • Page 206 Tech. Rep. Mode Security Mode Touch Panel Display Setting (The default is Highlighted Key Counter Set whether a Key Counter is plugged in (“ON”) or not (“OFF”). Plug-In Counter Select the condition by which the Key Counter count is increased. Copies Copy Made...

  • Page 207: Adjust

    1151SBS0700A ADJUST • The Adjust mode is for adjustments to be made before shipment at the factory. As a rule, use this mode only when RAM Board or Memory Board (IC28B) has been replaced with a new one. If the setting has been changed, input the value given on the Adjust Mode Label on the inside of the Front Door.

  • Page 208: Adjust Function Setting Procedure

    1155SBS0703A 7-3. Adjust Function Setting Procedure <Functions> 1) Printer ..Used for entering the Adjust values concerning the printer. 2) IR ....Used for entering the Adjust values concerning the IR. 3) EDH ..Used for entering the Adjust values concerning the EDH. <Setting Procedure>...
  • Page 209 Tech. Rep. Mode Adjust Touch Panel Display Setting (The default is Highlighted Fusing (°C) Input Set the temperature for fusing temperature control of the printer. 195°C 190°C 180°C Image Density Set the image density for the printer. (−3 to +3) ATDC Control Current: Displays the current ATDC control voltage.
  • Page 210 Tech. Rep. Mode Adjust Touch Panel Display Setting (The default is Highlighted Feed (2) Set the correction value for the original scanning position for the second page of a 2-sided original when the EDH is used. (−5.0 to +5.0) (0.0mm) Feed (FD) Set the correction value for the original scanning position in the FD direc- tion when the EDH is used.
  • Page 211 Di620 TROUBLESHOOTING...
  • Page 212 1155SBT000BA CONTENTS 1. INTRODUCTION 1-1. General Precautions ........T-1 1-2.
  • Page 213 CONTENTS 6) C0072 : Main Hopper Toner Replenishing Motor M9’s Failure to Turn ......T-46 7) C0090 : Developing Unit Drive Motor M1’s Failure to Turn .
  • Page 214 CONTENTS 16) C0996 : 3rd Drawer Lock Release Failure....T-68 C0997 : 3rd Drawer Shift Gate Motion Failure 17) C0998 : Shifter Transfer Failure..... . . T-70 C099C: 3rd Drawer Shift Motor M29’s Failure to Turn 18) C0E00 : Main Erase Lamp LA1’s Failure to Turn ON.

  • Page 215: Introduction

    INTRODUCTION 1139SBT0101A 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 the chains and gears. When servicing the copier with the Rear Cover removed, be sure to fit the interlock switch actuating jig in position. 2.

  • Page 216: I/O Check

    I/O CHECK 1155SBT0201A 2-1. Controlled Parts Check Procedure To allow the Tech. Rep. to easily and safely determine whether a particular controlled part is fully operational, this copier provides the following provision: checking the data of the input port of the board IC with the copier in the standby state (including a misfeed, malfunction, and closure failure condition) allows the Tech.

  • Page 217: I/O Check List

    1155SBT0202A 2-2. I/O Check List <I/O Check Screens> • The following screens are only typical and the port data shown does not necessarily represent the actual one. 1155T021CC 1155T024CC 1155T022CC 1155T025CC 1155T023CC 1155T026CC...
  • Page 218 <I/O Check List> Operation Charac- teristics/Panel Dis- Port CN/PJ Symbol Panel Display Parts/Signal Name play 1st Drawer Set Sen- Out of PC44 Drawer Set In position IC1F PC1 PJ15F-5B position 1st Drawer Paper Paper Paper not PC32 Take-up IC1F PC3 PJ15F-2A Take-Up Sensor present present...
  • Page 219 Operation Charac- teristics/Panel Dis- Port CN/PJ Symbol Panel Display Parts/Signal Name play Cabi- Universal Size Paper Size Detect- IC2F PF0 PJ11F-9 ing Switch FD1 Universal Size Paper Size Detect- IC2F PF1 PJ11F-7 ing Switch FD2 Universal Size Paper Size Detect- IC2F PF2 PJ11F-5 ing Switch FD3...
  • Page 220 Operation Charac- teristics/Panel Dis- Port CN/PJ Symbol Panel Display Parts/Signal Name play Fusing Upper Roller Upper Fusing Roller Voltage value IC1A ANI0 PJ3A-9B (°C) Thermistor (A/D converted) Unit Lower Roller Lower Fusing Roller Voltage value IC1A ANI1 PJ3A-10B (°C) Thermistor (A/D converted) Thermistor Set Out of...

  • Page 221: Paper Transport Failure

    PAPER TRANSPORT FAILURE 1156SBT0301A 3-1. Paper Misfeed When a paper misfeed occurs, the Touch Panel shows the corresponding message, misfeed location, and paper location. Blinking Misfeed location Paper location 1155O632CA...
  • Page 222 Lit/Blinking LED Misfeed/Paper Location Ref. Page ∗ ADF take-up See the relevant ∗ ADF turnover/exit option service manual. ∗ ADF transport Multi bypass take-up Copier transport/separator Copier fusing Duplex horizontal transport Duplex turnover 1st Drawer take-up 2nd Drawer take-up 3rd Drawer take-up Vertical transport (lower right of copier) ∗...
  • Page 223 <Misfeed Detection Sensor Layout> Paper Exit Switch Paper Leading Edge Sensor Transport Roller Sensor Manual Feed Paper Empty Turnover Feed Entry Sensor PC6 Sensor PC11 1st Drawer Paper Take-Up Turnover/Exit Sensor Sensor PC32 PC14 Vertical Transport Sensor 1 PC36 Turnover Feed Jam Vertical Transport Sensor 2 Sensor PC57 PC37...

  • Page 224: Types Of Misfeed Detection And Detection Timings

    1155SBT0302A 3-2. Types of Misfeed Detection and Detection Timings <Copier Take-Up Misfeed> Type Detection Timing Paper take-up failure 1st Drawer Paper Take-Up Sensor PC32 is not blocked ([L]) even after the detection lapse of approx. 0.3 sec. after 1st Drawer Paper Take-Up Clutch CL3 has been energized (after two paper take-up retry sequences).
  • Page 225 <Duplex Unit Paper Take-Up Misfeed> Type Detection Timing Trailing edge detection by PC11 is not unblocked ([H]) even after the lapse of approx. 2.3 sec. after Turnover Feed Entry Sen- Paper Leading Edge Sensor PC2 has been unblocked ([H]) when the sor PC11 paper is fed out onto the Lower Exit Tray or stored in the Duplex Unit.

  • Page 226: Misfeed Clearing Procedures

    1155SBT0303A 3-3. Misfeed Clearing Procedures 1) Copier Take-Up Misfeed Relevant Electrical Parts 1st Drawer Paper Take-Up Clutch CL3 Vertical Transport Motor M22 2nd Drawer Paper Take-Up Clutch CL4 Vertical Transport Sensor 1 PC36 3rd Drawer Paper Take-Up Clutch CL5 Vertical Transport Sensor 2 PC37 1st Drawer Paper Take-Up Sensor PC32 Vertical Transport Sensor 3 PC38 2nd Drawer Paper Take-Up Sensor PC33...
  • Page 227 <Copier Take-Up Misfeed Clearing Procedure> Symptom Step Check Item Result Action • Paper is not Does the paper being used meet Instruct the user to use the taken up at all. product specifications? paper that meets product • Paper is at a specifications.

  • Page 228: Transport/Separator Misfeed

    2) Transport/Separator Misfeed Relevant Electrical Parts Transport Motor M23 Suction Fan Motor M14 Transport Roller Sensor PC1 Master Board PWB-A Synchronizing Motor M5 Synchronizing Motor Control Board PWB-T Paper Leading Edge Sensor PC2 Drawer S/P Board PWB-F Separator Finger Solenoid SL4 1155C02TAA T-14...
  • Page 229 <Transport/Separator Misfeed clearing Procedure> Symptom Step Check Item Result Action Paper is at a Are the Transport Rollers deformed, Clean or change the Trans- stop at the worn, or dirty with paper dust? port Rollers. Transport Roll- Does M23 turn when the Start key is Check for overload and then ers.
  • Page 230 Symptom Step Check Item Result Action Paper is at a Is the Pre-Image Transfer Guide Plate Clean or change the guide stop near the PC dirty or deformed, or has the seal plate. Drum. been separated? Are the Image Transfer/Paper Separa- Clean or change the defec- tor Corona Wires dirty or deformed? tive corona wire.

  • Page 231: Multi Bypass Misfeed

    3) Multi Bypass Misfeed Relevant Electrical Parts Manual Feed Paper Take-Up Clutch CL1 Manual Feed Paper Pressure Solenoid SL1 Manual Feed Paper Empty Sensor PC6 Master Board PWB-A Power Supply Board PWB-C 1155C03TAA T-17...
  • Page 232 <Multi Bypass Misfeed Clearing Procedure> Symptom Step Check Item Result Action Paper is not Does the paper being used meet Instruct the user to use the taken up at all. product specifications? paper that meets product specifications. Is the paper curled, wavy, or damp? Change the paper.

  • Page 233: Fusing/Exit Misfeed

    4) Fusing/Exit Misfeed Relevant Electrical Parts Suction Fan Motor M14 Exit /Duplex Switching Solenoid SL3 Paper Exit Switch S10 Master Board PWB-A 1155C04TAB T-19...
  • Page 234 <Fusing/Exit Misfeed Clearing Procedure> Symptom Step Check Item Result Action Paper is at a Is the Fusing Guide Plate dirty or Clean or change the Fusing stop before the deformed? Guide Plate. Fusing Roller. Check M14 for operation. Check the Suction Belts and Does the voltage across PJ3A-7B on change M14.

  • Page 235: Duplex Unit Take-Up Misfeed

    5) Duplex Unit Take-Up Misfeed Relevant Electrical Parts Turnover Feed Entry Sensor PC11 Duplex Unit Horizontal Transport Jam Sensor Duplex Unit Horizontal Transport Sensor PC12 PC56 Duplex Unit Horizontal Transport Entry Sensor Turnover Feed Jam Sensor PC57 PC13 Duplex Unit Paper Take-Up Solenoid SL2 Turnover/Exit Sensor PC14 Master Board PWB-A Duplex Unit Turnover Exit Solenoid SL5...
  • Page 236 <Duplex Unit Take-Up Misfeed Clearing Procedure> Symptom Step Check Item Result Action Paper is at a Does M6 turn during a 2-sided copy Check for overloads and stop in the verti- cycle? then check step 4 and cal transport onward. section of the Is the knob of the Horizontal Transport Check gears and proper...
  • Page 237 Symptom Step Check Item Result Action Paper is at a Check SL5 for operation. Change PWB-A. stop in the turn- Does the voltage across PJ6A-3B on over section of PWB-A and GND change from the Duplex Unit. DC24V to DC0V when a copy cycle is run in the Sort and Folding mode? Has the misfeed occurred when a Check step 8.
  • Page 238 M E M O...

  • Page 239: Malfunction

    1155SBT0400A MALFUNCTION The copier CPU has a function that self-diagnoses the copier conditions. On detection of a malfunction, the corresponding malfunction name, location, and definition codes are shown on the Touch Panel together with a technical representative call message. • Perform the following steps to reset malfunctions. <Malfunction Resetting Procedure>...

  • Page 240: Detection Timing By Malfunction Code

    1155SBT0401A 4-1. Detection Timing by Malfunction Code C00∗∗ Drive system malfunctions Code Description Detection Timing • The Lock signal remains HIGH for a continuous 1.5- C0000 Fusing Motor M3's failure to turn sec. or more period while M3 remains energized. •...

  • Page 241: Failure To Turn

    Code Description Detection Timing • Toner Bottle Home Position Sensor PC4 is not C0072 Main Hopper Toner Replenishing Motor M9's failure to turn unblocked ([H]) even after the lapse of 5 sec. after M9 has been energized. • PC4 is not blocked ([L]) even after the lapse of 10 sec. after M9 has been energized and PC4 has been unblocked ([H]).

  • Page 242: C0400 Exposure Lamp Fl1'S Failure To Turn On

    C04∗∗ Exposure Lamp malfunctions C14A∗ Exposure Lamp Heater malfunctions Code Description Detection Timing C0400 Exposure Lamp FL1's failure to <When the light intensity is adjusted> turn ON The CCD read data does not exceed the specified level when the peak is detected of the intensity of light after the lapse of, or within, 1 min.

  • Page 243: C0600 Scanner Motor M31 Malfunction

    C06∗∗ Optical Section malfunctions Code Description Detection Timing C0600 Scanner Motor M31 malfunction Encoder pulses are not input to SCP Board PWB-IC at 50-msec. intervals while M31 is turning. C0602 Cable unwound Scanner Reference Position Sensor PC55 is not blocked ([H]) despite the fact that the M31 encoder pulse count represents that the Scanner is at a position 5 mm or more to the rear (to the right as viewed from the front)

  • Page 244: C0914 : 2Nd Drawer Lift-Up Motor M25'S Failure To Turn

    Code Description Detection Timing C0914 2nd Drawer Lift-Up Motor M25’s <Metric Areas> • PC26 detects no HIGH-going or LOW-going edges failure to turn even after the lapse of 500 msec. after M25 has started turning. <Inch Areas> • PC26 detects no HIGH-going or LOW-going edges even after the lapse of 500 msec.

  • Page 245: C0990 3Rd Drawer Lift-Up Failure

    Code Description Detection Timing • 3rd Drawer Paper Lift-Up Sensor PC42 is not blocked C0990 3rd Drawer lift-up failure ([L]) even when 3rd Drawer Elevator Motor Pulse Sen- sor PC29 has detected 400 HIGH-going and LOW- going edges after 3rd Drawer Elevator Motor M28 has started turning forward (for upward motion);...

  • Page 246: C0998 Shifter Transfer Failure

    Code Description Detection Timing • 3rd Drawer Shifter Return Position Sensor PC23 is not C0998 Shifter transfer failure blocked ([L]) even when 3rd Drawer Shift Motor Pulse Sensor PC30 detects 400 HIGH-going and LOW- going edges after 3rd Drawer Shift Motor M29 has started turning forward (for rightward motion);...
  • Page 247 C0B3∗ Paper aligning mechanism malfunctions Code Description Detection Timing C0B30 CD Aligning Motor M6's failure to turn C0B31 CD Aligning Motor M6's failure to turn C0B34 FD Aligning Motor M5's failure to ∗See the option service manual. turn C0B35 FD Aligning Motor M5's failure to turn C0B36 FD Aligning Motor M5's failure to turn...

  • Page 248: C0E00 Main Erase Lamp La1'S Failure To Turn On

    C0BC∗ Paper folding malfunctions Code Description Detection Timing C0BC0 1st Crease Stopper Motor M12's failure to turn C0BC1 1st Crease Stopper Motor M12's failure to turn ∗See the option service manual. C0BC2 Paper Crease Motor M11's failure to turn C0BC3 Paper Crease Motor M11 turning at abnormal timing C0BF∗...
  • Page 249 C10∗∗~C12∗∗ Code Description C10∗∗ Failure in Memory Board (ASIC, IC, etc.) C11∗∗ C12∗∗ Defective Memory Board (control system) C12C∗ Hard Disk Drive failure C13∗∗ Printer Engine malfunctions Code Description Detection Timing • A LOW Lock signal is not detected within 5 to 20 sec. C1300 Polygon Motor M4's failure to turn after M4 has been energized at 600 dpi;...
  • Page 250 C14∗∗ Image Reader malfunctions Code Description Code Description C1401 IR main routine time over C1402 IR illegal interrupt vector occurred C1410 IR watchdog C1426 Communications error 2 reception buffer full C1428 Communications error 2 transmission C1429 Communications error 3 transmission buffer full buffer full C142A Communications error 4 transmission...
  • Page 251 1155SBT0402A 4-2. Troubleshooting Procedures by Malfunction Code ∗ If a malfunction code is shown on the Touch Panel, reset the malfunction and then start the relevant troubleshooting procedure. 1) C0000 : Fusing Motor M3's Failure to Turn C0010 : PC Drum Drive Motor M2's Failure to Turn Relevant Electrical Parts Fusing Motor M3 Master Board PWB-A...
  • Page 252 C0000 Step Check Item Result Action Check M3 for operation. Change PWB-A. Does the voltage across PJ7A-1A on PWB- A and GND change from DC5V to DC0V when the Start key is pressed? Does the voltage across PJ7A-8A on PWB- Check gears for overload and, if they are A and GND change from DC5V to DC0V okay, change M3.
  • Page 253 2) C0020 : Paper Take-Up Motor M21's Failure to Turn C0040 : Suction Fan Motor M14's Failure to Turn C0042 : Toner Suction Fan Motor M13's Failure to Turn C0048 : Hard Disk Drive Cooling Fan Motor 1 M34's Failure to Turn, Hard Disk Drive Cooling Fan Motor 2 M35's Failure to Turn Relevant Electrical Parts Paper Take-Up Motor M21...
  • Page 254 C0020 Step Check Item Result Action Check M21 for operation. Change PWB-A or PWB-F. Does the voltage across PJ2F-2 on PWB-F and GND change from DC5V to DC0V when the Start key is pressed? Does the voltage across PJ2F-4 on PWB-F Change PWB-A or PWB-F.
  • Page 255 3) C0049 : PH Cooling Fan Motor M19’s Failure to Turn C004A: PC Drum Cooling Fan Motor M17’s Failure to Turn Relevant Electrical Parts PC Drum Cooling Fan Motor M17 PH Cooling Fan Motor M19 Master Board PWB-A Power Supply Board PWB-C 1155C11TAB T-40...
  • Page 256 C0049 Step Check Item Result Action Check M19 for operation. Change PWB-A. Does the voltage across PJ8A-12A on PWB-A and GND change from DC0V to DC24V when the Start key is pressed? Does the voltage across PJ8A-11A on Change PWB-A. PWB-A and GND change from DC5V to Check gears for overload and, if they are DC0V when the Start key is pressed?
  • Page 257 4) C004B: CCD Cooling Fan Motor M32’s Failure To Turn C004C: Ozone Ventilation Fan Motor M12's Failure to Turn Relevant Electrical Parts Ozone Ventilation Fan Motor M12 Master Board PWB-A CCD Cooling Fan Motor M32 Power Supply Board PWB-C 1155C08TAB T-42...
  • Page 258 C004B Step Check Item Result Action Check M32 for operation. Change PWB-A. Does the voltage across PJ10A-9B on PWB-A and GND change from DC0V to DC24V when the malfunction is reset? Does the voltage across PJ10A-11B on Change PWB-A. PWB-A and GND change from DC5V to Check gears for overload and, if they are DC0V when the malfunction is reset? okay, change M17.
  • Page 259 5) C004D: Power Supply Unit Cooling Fan Motor 3 M18's Failure to Turn C004E: Power Supply Unit Cooling Fan Motor 1 M15's Failure to Turn Power Supply Unit Cooling Fan Motor 2 M16's Failure to Turn Relevant Electrical Parts Power Supply Unit Cooling Fan Motor 3 M18 Master Board PWB-A Power Supply Unit Cooling Fan Motor 2 M16 Power Supply Unit Cooling Fan Motor 1 M15...
  • Page 260 C004D Step Check Item Result Action Check M18 for operation. Change PWB-A. Does the voltage across PJ2A-13B on PWB-A and GND change from DC0V to DC24V when the malfunction is reset? Does the voltage across PJ2A-15B on Change PWB-A. PWB-A and GND change from DC5V to Check gears for overload and, if they are DC0V when the malfunction is reset? okay, change M18.
  • Page 261 6) C0072 : Main Hopper Toner Replenishing Motor M9's Failure to Turn Relevant Electrical Parts Main Hopper Toner Replenishing Motor M9 Master Board PWB-A Toner Bottle Home Position Sensor PC4 Toner Replenishing Motor Control Board PWB-O 1155C09TAB C0072 Step Check Item Result Action Manually turn the Toner Bottle a half turn...
  • Page 262 7) C0090 : Developing Unit Drive Motor M1's Failure to Turn Relevant Electrical Parts Developing Unit Drive Motor M1 Master Board PWB-A Power Supply Board PWB-C 1155C10TAA C0090 Step Check Item Result Action Check M1 for operation. Change PWB-A. Does the voltage across PJ7A-5A on PWB- A and GND change from DC5V to DC0V when the Start key is pressed? Does the voltage across PJ7A-7A on PWB-...
  • Page 263 8) C0100 : PC Drum Charge Comb Cleaning Motor M7's Failure to Turn Defective Drum Comb Cleaning Home Position Sensor PC16 C0110 : Image Transfer/Paper Separator Wire Cleaning Motor M8's Failure to Turn Defective Transfer/Separator Wire Cleaning Home Position Sensor PC17 Relevant Electrical Parts PC Drum Charge Comb Cleaning Motor M7 Transfer/Separator Wire Cleaning Home Position...
  • Page 264 C0100 Step Check Item Result Action Check the “I/O Check” screen to see if Check the PC16 actuator for operation PC16 is operational. and, if it is okay, change PC16. Manually turn the screw shaft to bring the cleaner to its home position. Is the "Clean (Charge)"...
  • Page 265 9) C0200 : PC Drum Charge Corona Leak Detected C0210 : Image Transfer Corona Leak Detected C0220 : Developing Bias Leak Detected C0230 : Paper Separator Corona Leak Detected Relevant Electrical Parts PC Drum Charge/Developing Bias HV HV1 Master Board PWB-A Image Transfer/Paper Separator HV HV2 Power Supply Board PWB-C 1155C13TAA...
  • Page 266 C0200 Step Check Item Result Action Is the Comb Electrode installed properly? Install the Comb Electrode properly. Is the Comb Electrode dirty or has it Clean or change the Comb Electrode. snapped? Is “C0200” shown even when PJ38HV1 is Change PWB-A. unplugged from HV1? Change HV1.
  • Page 267 10) C0400 : Exposure Lamp FL1's Failure to Turn ON C0420 : Exposure Lamp FL1 Turning ON at Abnormal Timing C14A0: Exposure Lamp Heater UN13 Failure (during Warming-up) C14A1: Exposure Lamp Heater UN13 Failure (Abnormally Low Temperature) C14A2: Exposure Lamp Heater UN13 Failure (Abnormally High Temperature) C14A3: IR Warming-up Failure Relevant Electrical Parts Exposure Lamp FL1...
  • Page 268 C0400, C0420 Step Check Item Result Action Has Exposure Lamp FL1 blackened? Change FL1. Does the Exposure Lamp turn ON when Check PWB-IE and check step 4 and "Exp. Lamp Check" of "Function (I.R.)" onward. under "I.R. & EDH Check" available from the Tech.
  • Page 269 11) C0500 : Warming-up Failure C0510 : Abnormally Low Fusing Temperature C0520 : Abnormally High Fusing Temperature C0540 : Fusing Roller Thermistor Loading Failure C0550 : Hard Protect Detected <Metric Areas> Relevant Electrical Parts Upper Fusing Roller Heater Lamp H1 Upper Fusing Heater Lamp SSR1 SSR1 Lower Fusing Roller Heater Lamp H2 Lower Fusing Heater Lamp SSR2 SSR2...
  • Page 270 <Inch Areas> Relevant Electrical Parts Upper Fusing Roller Heater Lamp H1 Lower Fusing Roller Thermal Fuse TF2 Lower Fusing Roller Heater Lamp H2 Upper Fusing Heater Lamp SSR1 SSR1 Upper Fusing Roller Thermistor TH1 Lower Fusing Heater Lamp SSR2 SSR2 Lower Fusing Roller Thermistor TH2 Main Relay (RY1) Upper Fusing Roller Thermal Fuse TF1...
  • Page 271 C0500, C0510 Step Check Item Result Action Remove the Fusing Unit Front Cover and Check step 7 and onward. then turn ON the Power Switch. Does H1 turn ON at this time? Does H2 turn ON when the malfunction is Check step 8 and onward.
  • Page 272 C0520 Step Check Item Result Action Does H1 remain ON after the copier has Check step 4 and onward. completed warming up? Or, is H2 ON when "Fuser (Lower)" shown on "Level History" available from "Tech. Rep. Mode" is 140°C or more? Does the voltage across PJ8A-3B on PWB- Change PWB-A.
  • Page 273 12) C0600 : Scanner Motor M31 Malfunction C0602 : Cable Unwound C0650 : SHOME Signal Error Relevant Electrical Parts Scanner Motor M31 Digital Image Processing Board PWB-IB Scanner Reference Position Sensor PC55 SCP Board PWB-IC 1155C16TAA T-58...
  • Page 274 C0600 Step Check Item Result Action Is PJ3IC securely plugged into PWB-IC? Plug it in securely. Check M31 for operation. Check gears for overload and, if they are Does the voltage across PJ1IC-11 on okay, change M31 or PWB-IC. PWB-IC and GND change from DC5V to DC0V when the malfunction is reset? Is the voltage across PJ3IC-6 on PWB-IC Change PWB-IB.
  • Page 275 13) C0910 : 2nd Drawer Lift-Up Failure C0911 : 2nd Drawer Lock Release Failure (Inch Areas) C0914 : 2nd Drawer Lift-Up Motor M25's Failure to Turn <Metric Areas> Relevant Electrical Parts 2nd Drawer Lift-Up Motor M25 Master Board PWB-A 2nd Drawer Paper Lift-Up Sensor PC41 Drawer S/P Board PWB-F 2nd Drawer Lift-Up Motor Pulse Sensor PC26 1155C28TAA...
  • Page 276 <Inch Areas> Relevant Electrical Parts 2nd Drawer Lift-Up Motor M25 2nd Drawer Lower Position Sensor PC19 2nd Drawer Paper Lift-Up Sensor PC41 Master Board PWB-A 2nd Drawer Lift-Up Motor Pulse Sensor PC26 Drawer S/P Board PWB-F 2nd Drawer Paper Descent Key UN8 2nd Drawer Flexible Printed Circuit PWB-M2 1155C29TAA T-61...
  • Page 277 <Metric Areas> C0910, C0914 Step Check Item Result Action Does M25 start turning when the 2nd Check for overloads and then check step Drawer is slid out and back in? 3 and onward. Does the voltage across PJ4F-3 on PWB-F Check gears for overload and, if they are and GND change from DC0V to DC24V okay, change M25.
  • Page 278 14) C0920 : 1st Drawer Lift-Up Failure C0921 : 1st Drawer Lock Release Failure (Inch Areas) C0924 : 1st Drawer Lift-Up Motor M24's Failure to Turn <Metric Areas> Relevant Electrical Parts 1st Drawer Lift-Up Motor M24 Master Board PWB-A 1st Drawer Paper Lift-Up Sensor PC40 Drawer S/P Board PWB-F 1st Drawer Lift-Up Motor Pulse Sensor PC25 1155C30TAB...
  • Page 279 <Inch Areas> Relevant Electrical Parts 1st Drawer Lift-Up Motor M24 1st Drawer Lower Position Sensor PC18 1st Drawer Paper Lift-Up Sensor PC40 Master Board PWB-A 1st Drawer Lift-Up Motor Pulse Sensor PC25 Drawer S/P Board PWB-F 1st Drawer Paper Descent Key UN7 1st Drawer Flexible Printed Circuit PWB-M1 1155C31TAA T-64...
  • Page 280 <Metric Areas> C0920, C0924 Step Check Item Result Action Does M24 start turning when the 1st Check for overloads and then check step Drawer is slid out and back in? 3 and onward. Does the voltage across PJ4F-1 on PWB-F Check gears for overload and, if they are and GND change from DC0V to DC24V okay, change M24.
  • Page 281 15) C0990 : 3rd Drawer Lift-Up Failure C0994 : 3rd Drawer Elevator Motor M28's Failure to Turn Relevant Electrical Parts 3rd Drawer Paper Lift-Up Sensor PC42 3rd Drawer Elevator Motor M28 3rd Drawer Paper Empty Sensor PC50 3rd Drawer Elevator Motor Pulse Sensor PC29 3rd Drawer Lower Position Sensor PC20 Master Board PWB-A 3rd Drawer Overrun Detecting Sensor PC21...
  • Page 282 C0990 Step Check Item Result Action Is PC42 fully operational? Make the input Check the PC42 actuator for operation port check using “I/O Check.” and, if it is okay, change PC42. Is PC50 fully operational? Make the input Check the PC50 actuator for operation port check using “I/O Check.”...
  • Page 283 16) C0996 : 3rd Drawer Lock Release Failure C0997 : 3rd Drawer Shift Gate Motion Failure Relevant Electrical Parts 3rd Drawer Lock Solenoid SL6 Master Board PWB-A 3rd Drawer Shift Gate Position Sensor PC52 Drawer S/P Board PWB-F 3rd Drawer Shift Gate Motor M30 3rd Drawer Flexible Printed Circuit PWB-H 1155C20TAA T-68...
  • Page 284 C0996 Step Check Item Result Action Check SL6 for operation. Change SL6. Does the voltage across PJ7F-2 on PWB-F Change PWB-A or PWB-F. and GND change from DC24V to DC0V when 3rd Drawer Paper Descent Key UN9 is pressed? C0997 Step Check Item Result...
  • Page 285 17) C0998 : Shifter Transfer Failure C099C: 3rd Drawer Shift Motor M29's Failure to Turn Relevant Electrical Parts 3rd Drawer Shifter Return Position Sensor PC23 3rd Drawer Shift Motor Pulse Sensor PC30 3rd Drawer Shifter Home Position Sensor PC22 Master Board PWB-A 3rd Drawer Shift Motor M29 Drawer S/P Board PWB-F 3rd Drawer Flexible Printed Circuit PWB-H...
  • Page 286 C0998 Step Check Item Result Action Is PC23 fully operational? Make the input Check the PC23 actuator for operation port check using “I/O Check.” and, if it is okay, change PC23 or PWB-H. Is PC22 fully operational? Make the input Change PWB-A.
  • Page 287 18) C0E00: Main Erase Lamp LA1's Failure to Turn ON Relevant Electrical Parts Main Erase Lamp LA1 Master Board PWB-A 1155C22TAA C0E00 Step Check Item Result Action Does the voltage across PJ10A-10B on Change PWB-A. PWB-A and GND change from DC24V to DC0V when the Start key is pressed? Is the voltage across PJ10A-10B on PWB- Change LA1.
  • Page 288 19) C0F24 : AIDC Sensor UN6 Contamination Correction Failure Relevant Electrical Parts AIDC Sensor UN6 Master Board PWB-A 1155C23TAA C0F24 Step Check Item Result Action Are PJ10A, CN27, CN21, and CN64 Plug them in securely. plugged securely into PWB-A? Is the photosensor/LED of the AIDC Sen- Clean UN6 and run the F5 operation.
  • Page 289 20) C0F32 : ATDC Sensor UN4 Failure C0F33 : Abnormally Low T/C as Detected by ATDC Sensor UN4 C0F34 : T/C Recovery Failure as Detected by ATDC Sensor UN4 Relevant Electrical Parts ATDC Sensor UN4 Master Board PWB-A 1155C24TAB C0F32, C0F33, C0F34 Step Check Item Result...
  • Page 290 21) C10∗∗~C14∗∗ • These malfunctions are concerned with faulty symptoms as they relate to software, hardware, and communications. For remedial action change the board, check for cable connections, and turn OFF and ON the power. Code Action C10∗∗ Reset the malfunction and turn OFF and ON the Power Switch. C11∗∗...
  • Page 291 Code Action C1440 Check that the Original Glass is properly installed and then reset the malfunction and turn OFF and ON the Power Switch. If C1469 is shown, check the harness between IA and IB and the IA power supply. If they are okay, change PWB-IA or PWB-IB.
  • Page 292 22) The Copier Does not Turn ON Relevant Electrical Parts Power Switch S1 DC Power Supply PU1 Lower Front Door Interlock Switch S2 Master Board PWB-A Right Door Interlock Switch S3 Power Supply Board PWB-C Upper Left Door Interlock Switch S4 Noise Filter Board PWB-D Lower Left Door Interlock Switch S5 Symptom Step...

  • Page 293: Initial Checks

    IMAGE FAILURE 1155SBT0501A 5-1. Image Failure Troubleshooting • Image failures have many possible causes. For troubleshooting, it is necessary to determine whether a failure is attributable to: A basic cause or any other cause The input system (IR, memory) or output system (engine, memory). In this chapter, troubleshooting is divided into “initial checks”...
  • Page 294 1155SBT0503A 5-3. Troubleshooting Procedures by Image Failure <Image Failure Samples> 1) Blank copy 2) Black copy 3) Low image density 4) Foggy background 5) Black streaks or bands 6) Black spots 7) Blank streaks or bands 8) Void areas 9) Smear on back 10) Uneven image density 11) Gradation reproduction failure 12) Rough image 13) Periodically uneven image...
  • Page 295 1155SBT050301A 1) Blank Copy Section Step Check Item Result Action Is the PC Drum Charge Corona installed cor- Install correctly. rectly? Are the Comb Electrode and grid mesh nor- Check and change if nec- mal? essary. Is the wiring between PC Drum Charge/ Correct the wiring.
  • Page 296 1155SBT050302A 2) Black Copy Section Step Check Item Result Action Is the PC Drum properly grounded? Clean or change the PC Drum ground plate. Is the developing bias contact normal? Clean or change the devel- oping bias contact. Engine Is the wiring between Image Transfer/Paper Correct the wiring.
  • Page 297 Section Step Check Item Result Action Select “Adjust” and “Printer,” change the This completes the proce- value for “Image Density” to a greater one (on dure. Engine the + end), and make a copy. Is the image Change HV1 or HV2. density higher on the copy than before? Select “Tech.
  • Page 298 Section Step Check Item Result Action Are the Comb Electrode and grid mesh dirty? Clean or change the PC Drum Charge Corona. Check the toner suction Engine mechanism for operation. Is the Upper Fusing Roller dirty with foreign Clean or change the Upper matter? Fusing Roller.
  • Page 299 1155SBT050307A 7) Blank Streaks or Bands Section Step Check Item Result Action Is the PC Drum surface scratched or dirty? Clean or change the PC Drum. Are the PC Drum Paper Separator Fingers Clean or change the sepa- dirty or deformed? rator fingers.
  • Page 300 Section Step Check Item Result Action Is the paper guide shorted to the frame? Close the circuit properly. Is the Image Transfer Corona installed prop- Install the corona properly. erly? Is the Image Transfer Corona wire dirty? Clean or change the Image Engine Transfer Corona.
  • Page 301 1155SBT050310A 10) Uneven Image Density Section Step Check Item Result Action Is the PC Drum grounded properly? Clean or change the PC Drum ground plate. Are the Comb Electrode and grid mesh dirty Clean or change the PC or deteriorated? Drum Charge Corona.
  • Page 302 1155SBT050311A 11) Gradation Reproduction Failure Section Step Check Item Result Action Is the Shading Sheet dirty? Clean the sheet. Is the image improved by loading new paper? Change the copy paper and instruct the user in how to store paper. Is the gradation unclear in the high-density Decrease the value for "γ...
  • Page 303 1155SBT050313A 13) Periodically Uneven Image Section Step Check Item Result Action Are the Ds Rolls of the Developing Unit dirty Clean or change the rolls. with foreign matter or scratched? Are the Developing Unit drive gears cracked Clean or change the defec- or dirty with foreign matter? tive gear.
  • Page 304 Di620 DIS/REASSEMBLY, ADJUSTMENT...
  • Page 305 1155SBD0000A For the Utmost safety Warning • For replacement parts, use the genuine parts with their part numbers specified in the parts man- ual. Use of a wrong part could cause an overload or dielectric breakdown resulting in an electric shock or fire.
  • Page 306 Caution • A high voltage is being applied to the part marked with the symbol shown on the right. Touching it can cause an electric shock. Be sure to unplug the power cord when servicing this part or other parts near it. •...
  • Page 307 1155SBD000BA CONTENTS 1 SERVICE INSTRUCTIONS 1-1. PRECAUTIONS FOR DISASSEMBLY/ADJUSTMENTS ..D-1 1-2. INSTRUCTIONS FOR HANDLING THE PWBs WITH MOS ICs ......... . .D-3 1-3.
  • Page 308 CONTENTS 5) Cleaning of the EDH Glass ......D-33 6) Cleaning of the Scanner Rails/Bushings ....D-33 7) Removal of the Scanner .
  • Page 309 CONTENTS 2-7. DEVELOPING UNIT ....... . .D-51 1) Removal of the Sub Hopper ......D-51 2) Disassembly of the Developing Unit and Replacement of Parts .
  • Page 310 CONTENTS 1) Microswitches ........D-69 2) Adjustment of the Front Lower Door Interlock Switch Position .
  • Page 311 CONTENTS 9) Zoom (FD) Adjust ....... . .D-90 10) Registration (CD)....... . .D-91 11) Registration (FD) .

  • Page 312: Service Instructions

    SERVICE INSTRUCTIONS 1151SBD0101C 1-1. PRECAUTIONS FOR DISASSEMBLY/ADJUSTMENTS Observe the following precautions whenever servicing the copier. • 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 313 <Identification of Fuses and Circuit Breakers> Exposure Lamp Holder UN11 121°C SCP Board PWB-IC 250V 3A (F1) 250V 2A (F2) Upper Fusing Roller Thermal Fuse TF1 220°C Lower Fusing Roller Thermal Fuse TF2 170°C Power Supply Board PWB-C 250V 3A (4pcs.) Circuit Breaker 1 CB1 20A DC Power Supply...

  • Page 314: Instructions For Handling The Pwbs With

    1139SBD0102A 1-2. 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 315 If, however, the surface is contaminated with fingerprints, clean it using the following procedure. 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. 1) Rotate the PC Drum so that the area of its surface on which the line of toner left by the Cleaning Blade is present is facing straight up.

  • Page 316: Parts Which Must Not Be Touched

    1151SBD0104B 1-4. 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 representative screw may be marked with red paint.

  • Page 317: Disassembly/Reassembly

    DISASSEMBLY/REASSEMBLY 2-1. DOORS, COVERS, AND EXTERIOR PARTS: IDENTIFICATION AND REMOVAL PROCEDURES 1155D002AB 1155D003AB...
  • Page 318 Part Name Removal Procedure Swing down No. 1. → Remove two screws that secure the belt. → Front Lower Door Remove four screws that secure the Front Lower Door. Swing down No. 2. → Remove one screw that secures the belt. → Front Upper Door Remove four screws that secure the Front Upper Door.
  • Page 319 Removal of the Control Panel Unit (No. 3) 1. Remove the Right Upper Cover and Left Upper Cover. 2. Raise the Electronic Document Hander and remove the two screws. 3. Loosen the four screws at the right and left and one at the front illustrated below. 4.

  • Page 320: Removal Of Circuit Boards And Other Electrical Components

    1155SBD0202A 2-2. REMOVAL OF CIRCUIT BOARDS AND OTHER ELECTRICAL COMPO- NENTS • When removing a circuit board or other electrical component, refer to "PRECAUTIONS FOR HAN- DLING THE PWBs" contained in SWITCHES ON PWBs and follow the corresponding removal pro- cedures.
  • Page 321 Symbol Part Name Removal Procedure Remove No. 25. → Remove the Master Board cover. PWB-A Master Board Remove No. 8, 9. → Remove the IR Unit fixing bracket. → PWB-B Memory Board Remove the MSC Board cover. PWB-C Power Supply Board Remove No.

  • Page 322: Paper Take-Up/Transport Sections

    2-3. PAPER TAKE-UP/TRANSPORT SECTIONS 1) Removal of the Paper Take-Up Unit 1. Remove the Right Door (Multi Bypass Unit). 2. Slide out the drawer. 3. Remove one screw and the harness cover. 4. Remove the locking wiring saddle. 5. Unplug connectors from Drawer S/P Board PWB-F. 1075D008AB 6.

  • Page 323: Replacement Of The Paper Take-Up Clutch

    2) Replacement of the Paper Take-Up Clutch 1. Remove the Paper Take-Up Unit. 2. Unplug one connector of the Paper Take-Up Clutch. 1075D198AA 3. Remove three screws and the Paper Take-Up Clutch mounting bracket. 4. Remove the bushing and Paper Take-Up Clutch Assy. 1075D199AA 5.

  • Page 324: Replacement Of The Paper Take-Up Roll, Paper Feed Roll, And Paper Separator Roll Assy

    3) Replacement of the Paper Take-Up Roll, Paper Feed Roll, and Paper Sep- arator Roll Assy 1. Open the Right Door. 2. Remove two screws and the Paper Separator Unit. 1075D010AA 3. Remove the pivot pins on both ends and the Guide Plate. 4.
  • Page 325 7. Remove the C-clip and slide the bushing to the side. 8. Slide the coupling to the left and remove the Paper Take- Up Roll Assy. 1075D013AA 9. Remove the C-clip and slide the bushing off to remove the Paper Take-Up Roll and Feed Roll. 1075D014AB NOTE When reinstalling the Paper Take-Up Roll Assy, place it...

  • Page 326: Cleaning Of The Vertical Transport Rollers

    4) Cleaning of the Vertical Transport Rollers 1. Open the Right Door. 2. Using a soft cloth dampened with alcohol, wipe clean each Vertical Transport Roller. 1075D016AA 5) Replacement of the Vertical Transport Rollers 1. Remove the Paper Take-Up Unit. 2.

  • Page 327: Removal Of The Lift-Up Motor (Metric Areas Only

    6) Removal of the Lift-Up Motor (Metric areas only) 1. Remove the Right Rear Cover and Rear Cover. 2. Unplug the connectors from Toner Replenishing Motor Control Board and Drawer S/P Board and remove the harness from the wiring saddle. 3.

  • Page 328: Removal Of The Synchronizing Rollers Unit

    7) Removal of the Synchronizing Rollers Unit 1. Open the Front Lower Door. 2. Lower Lever M4 and slide out the Transport Tray Assy. 3. Remove Misfeed Clearing Knob M3. 4. Remove one screw and Lever M4. 5. Remove three screws and the Transport Unit cover. 1155D009AB 6.

  • Page 329: Disassembly Of The Synchronizing Rollers Unit

    8) Disassembly of the Synchronizing Rollers Unit 1. Remove the Synchronizing Rollers Unit. 2. Unhook the springs from the front and rear ends of the Misfeed Clearing Guide Plate. 1155D011AA 3. Remove the pressure springs at the front and rear, Upper Transport Roller, and Upper Synchronizing Roller.
  • Page 330 5. Remove three screws and the Pre-Synchronizing Rollers Guide Plate. 6. Remove four screws and the Pre-Transport Rollers Guide Plate. 1155D014AB 7. Pull out the joint and remove the cover. 8. Remove the two E-rings and pull out the bushing for the Lower Transport Roller. 9.
  • Page 331 10. Remove two screws and the front and rear holders. Then, remove the Pre-Image Transfer Guide Plate. 11. Snap off one E-ring and remove the bushing from the Lower Synchronizing Roller. 1155D016AB 12. Remove the Lower Transport Roller by sliding it in the direction shown. 13.

  • Page 332: Cleaning Of The Upper Transport Roller/Upper Synchronizing Roller

    9) Cleaning of the Upper Transport Roller/Upper Synchronizing Roller 1. Remove the Transport Roller Unit. 2. Using a brush or soft cloth, clean the Upper Transport Roller/Upper Synchronizing Roller. 1155D018AA 10) Cleaning of the Lower Transport Roller/Lower Synchronizing Roller 1. Remove the Transport Rollers Unit. 2.

  • Page 333: Removal Of The Suction Belts

    12) Removal of the Suction Belts 1. Open the Front Lower Door. 2. Lower Lever M4 and slide out the Transport Tray Assy. 3. Remove Misfeed Clearing Knob M3. 4. Remove one screw and Lever M4. 5. Remove three screws and the Transport Unit cover. 6.

  • Page 334: Disassembly Of The Multi Bypass Unit

    13) Disassembly of the Multi Bypass Unit 1. Remove the Right Door (Multi Bypass Unit). 2. Remove the three screws shown and the Multi Bypass Unit. 1155D023AB 3. Loosen two screws, slide the pivot shaft to the side and remove the Multi Bypass Table. 1075D032AA 4.
  • Page 335 5. Remove three screws, unplug two connectors, and remove the Manual Feed Paper Pick-Up Solenoid Assy. 1075D039AA 6. Remove the Paper Take-Up Roll Assy by removing the two C-clips, gear, and bushings shown. 1155D024AA 7. Disassemble the Paper Take-Up Roll Assy. 1075D037AA D-24...

  • Page 336: Removal Of The 3Rd Drawer

    8. Remove four screws and the Guide Plate. 1155D025AA 9. Remove the Paper Separator Roll pressure spring. 10. Remove the C-clip and Paper Separator Assy. 1075D034AA 11. Remove the C-clip, slide the bushing off, and remove the Paper Separator Roll Assy. 1075D035AA 14) Removal of the 3rd Drawer 1.

  • Page 337: Removal Of The 3Rd Drawer Wires

    15) Removal of the 3rd Drawer Wires 1. Remove the 3rd Drawer. 2. Remove four screws, unplug one connector, and remove the Cover Assy. 1155D027AA 3. Remove two screws and the inner cover. 4425D104AA 4. Remove two screws and the drive bottom cover. 1161D016AA 5.
  • Page 338 6. Remove two screws and the Rear Cover. 1155D028AA 7. Remove two E-rings, four pulley covers and four pulleys. 1155D029AA 8. Remove four wire holders and the Main Tray. NOTES • Use care not to bend the wire. • Use new wire holders at reinstallation. 1155D030AA 9.

  • Page 339: Cleaning Of The 3Rd Drawer Paper Empty Board (Pwb-E

    16) Cleaning of the 3rd Drawer Paper Empty Board Using a soft cloth, wipe clean the 3rd Drawer Paper Empty Board. 1155D032AA 17) Removal of the Paper Drawer (Inch areas only) 1. Press the Paper Descent Key and slide out the drawer. 1075D304CA * If pressing the Paper Descent Key does not allow you to slide out the drawer, open the Right Door and push the...

  • Page 340: Removal Of The Lift-Up Motor (Inch Areas Only

    4. Unplug one connector and remove one screw and flat cable mounting bracket. 5. Remove the Front Right Cover, Drawer Stoppers, and the drawer. 1075D307CA 18) Removal of the Lift-Up Motor (Inch areas only) 1. Slide out the drawer. 2. Remove one screw and the Lift-Up Motor Cover. 1075D308CA 3.

  • Page 341: Optical Section

    2-4. OPTICAL SECTION 1) Sliding Out the IR Unit 1. Open the Electronic Document Hander. 2. Swing down the Front Upper Door, Front Lower Door. 3. Remove the Right Upper Cover, Upper Right Cover. 4. Remove the Left Upper Cover and Rear Cover. 5.

  • Page 342: Removal Of The Ccd Unit

    2) Removal of the CCD Unit 1. Open the Electronic Document Hander. 2. Remove the Control Panel. 3. Remove the Original Glass. 4. Slide the Scanner all the way to the left. 5. Loosen three screws indicated by the arrow. 6.

  • Page 343: Removal Of The Ph Unit

    3) Removal of the PH Unit DANGER You must conform to these procedures or you are endangering your eyes to exposure by class IIIb laser radiation. WARNING Whenever servicing the PH Unit, make sure that the power cord has been unplugged from the outlet.

  • Page 344: Cleaning Of The Original Glass

    4) Cleaning of the Original Glass Wipe clean the Original Glass with a soft cloth. 1155D041AA 5) Cleaning of the EDH Glass Wipe clean the EDH Glass with a soft cloth. 1155D211AA 6) Cleaning of the Scanner Rails/Bushings 1. Remove the Original Glass. 2.

  • Page 345: Removal Of The Scanner

    7) Removal of the Scanner 1. Remove the Original Glass. 2. Remove two screws and the Scanner cover. 1155D214AA 3. Unplug two connectors. 1155D045AA 4. Remove one screw and the flat cable holding bracket. 5. Remove three screws and the flat cable. 1155D046AA 6.

  • Page 346: Cleaning Of The Exposure Lamp

    8) Cleaning of the Exposure Lamp 1. Remove the Scanner Cover. 2. Using a soft cloth dampened with alcohol, clean the lamp by gently wiping its surface in one direction. 1155D048AA Replacement 1. Remove the Scanner Cover. 2. Remove the heater harness from the cord clamp and edge cover.

  • Page 347: Cleaning Of The 1St, 2Nd, And 3Rd Mirrors

    10) Cleaning of the 1st, 2nd, and 3rd Mirrors 1. Remove the Original Glass. 2. Remove two screws and the Reflector Mirror Assy. 3. Wipe clean the 1st Mirror with a soft cloth. NOTE Ensure that the mirror is not moved out of its correct position when wiped clean.

  • Page 348: Removal Of The Scanner Drive Cables

    1. Remove the Rear Cover. 2. Remove the IR Section Cooling Fan Filter. 1155D118AA 3. Using a brush or a vacuum cleaner, clean the Cooling Fan Filters. 1155D212AA 13) Removal of the Scanner Drive Cables 1. Remove the Electronic Document Hander, Rear Cover, Upper Rear Cover, Right Upper Cover, Upper Right Cover, Left Upper Cover, Upper Left Cover, and Original Glass.

  • Page 349: Winding Of The Scanner Drive Cables

    8. Remove one screw, unhook one spring, and remove the Scanner Drive Cable. 1155D057AA 9. Remove three screws and the drive side plate. 10. Remove the Scanner Drive Pulley. 1155D058AA 14) Winding of the Scanner Drive Cables. Pulley C Pulley B Pulley A Cable Drive Pulley 1155D059AA...
  • Page 350 2. Wind the length of the cable on the cylindrical stopper end counterclockwise four turns around the pulley, from the back to the front side. 1155D061AA 3. Wind the length of the cable on the mounting bracket end clockwise four turns from the front to the back side, then slip the Cable Holding Jig onto the pulley to secure the cable in position.
  • Page 351 NOTE When winding the cable around pulley B, place the length of the cable on the cylindrical stopper end at the front and the length of the cable on the mounting bracket end in the rear. 1155D066AB 7. Fit the cable into the Cable Guide Groove, hook on the spring, and secure it in position.

  • Page 352: Pc Unit

    2-5. PC UNIT 1) Sliding Out the PC Unit 1. Open the Front Lower Door. 2. Lower Lever M4. 3. Loosen three screws and slide out the PC Unit. 1155D069AA 2) Removal of the Developing Unit 1. Slide out the PC Unit. 2.

  • Page 353: Removal Of The Pc Drum

    5) Removal of the PC Drum 1. Remove the PC Drum Charge Corona. 2. Unlock two PC Drum Lock Levers and remove the PC Drum. NOTE When the PC Drum has been replaced, clear the count of PC Drum 3 of PM Counter 2/4 available from Tech. Rep. mode and perform the F5 operation (AIDC Sensor Adjustment).

  • Page 354: Cleaning Of The Toner Antispill Seal, Aidc Sensor, And Pc Drum Paper Separator Fingers

    8) Cleaning of the Toner Antispill Seal, AIDC Sensor, and PC Drum Paper Separator Fingers 1. Remove the PC Drum. 2. Using a brush or soft cloth, clean the Toner Antispill Seal, AIDC Sensor, and PC Drum Paper Separator Fingers. 1075D090AA 9) Disassembly of the PC Drum Paper Separator Fingers Assy 1.

  • Page 355: Cleaning Of The Aidc Sensor

    6. When reinstalling the PC Drum Paper Separator Fingers, be sure to rehook the torsion spring correctly as shown. After reinstallation, check that the fingers move smoothly. 1075D094AA 7. Move the separator fingers and the pressure lever laterally to ensure that they move smoothly. NOTE Whenever the PC Drum Paper Separator Fingers have been removed and reinstalled, be sure to adjust the...

  • Page 356: Replacement Of The Cleaning Blade

    NOTE When securing the Toner Antispill Seal, try to press it in the direction of the arrow. 1155D215AA 12) Replacement of the Cleaning Blade 1. Remove the PC Drum and Main Erase Lamp. 2. Unhook the spring. 3. Remove two shoulder screws, one spring, and one cap, and remove and replace the Cleaning Blade.

  • Page 357: Replacement Of The Ozone Filters

    13) Replacement of the PC Ground Plat 1. Remove the Rear Cover. 2. Remove three screws and the Flywheel. 1155D116AA 3. Remove one screw and the PC Ground Plate. Replace the PC Ground Plate. 1155D075AB 14) Replacement of the Ozone Filters PC Drum Charge Corona 1.

  • Page 358: Replacement Of The Toner Collecting Bottle

    Image Transfer/Paper Separator Coronas 1. Slide out the Transport Tray Assy. 2. Remove four screws and the Suction Deck. 1155D021AB 3. Remove four screws and Suction Fan Assy. 1155D128AA 4. Pull out the Ozone Filter and replace it. 1155D129AA 5. Remove the Rear Cover. 6.

  • Page 359: Pc Drum Charge Corona And Image Transfer/Paper Separator Coronas

    2-6. PC DRUM CHARGE CORONA AND IMAGE TRANSFER/PAPER SEPA- RATOR CORONAS 1) Replacement of the PC Drum Charge Corona Grid Mesh, PC Drum Charge Comb Electrode and Cleaners 1. Remove the PC Drum Charge Corona. 2. Remove the grid meshes. 3.

  • Page 360: Cleaning Of The Pc Drum Charge Corona Housing

    2) Cleaning of the PC Drum Charge Corona Housing Using a soft cloth dampened with alcohol, wipe clean the corona housing. NOTE Use care when cleaning the housing, as it is easy to deform. 1075D106AA 3) Cleaning and Replacement of the Grid Mesh Blow all foreign matter off the Grid Mesh with a blower brush.

  • Page 361: Replacement Of The Image Transfer/Paper Separator Corona Wires And Wire Cleaners

    5) Replacement of the Image Transfer/Paper Separator Corona Wires and Wire Cleaners 1. Remove the Image Transfer/Paper Separator Coronas. 2. Remove the holder covers at the front and rear and four paper guides. 1155D082AA 3. Extend the corona wire spring and remove the corona wire and wire cleaner.

  • Page 362: Removal Of The Sub Hopper

    2-7. DEVELOPING UNIT 1) Removal of the Sub Hopper 1. Remove the Developing Unit. 2. Remove two screws and the Sub Hopper. 1075D217AA 2) Disassembly of the Developing Unit and Replacement of Parts 1. Remove the Sub Hopper. 2. Loosen two screws and the Developer Scattering Prevention Plate.
  • Page 363 6. Remove one screw and the gear holder at the front of the Developing Unit. 7. Unplug one connector and remove four gears. 1155D086AB 8. Remove two screws and the Sub Hopper Toner Replenishing Motor. 9. Snap off the E-ring and remove the bushing for the Developer Conveying/Agitating Screw. 10.
  • Page 364 13. Remove the E-ring and gear. Remove one screw and the bias contact plate. Then, remove the bushing for the Developer Conveying/Agitating Screw. 14. Remove three screws and the cord clamp. 15. Remove two screws and the bushing for the Bucket Roller. NOTE When reinstalling the bushing, twist it into position.

  • Page 365: Cleaning And Replacement Of The Developer Side Seals

    * Identifying the 1st Sleeve/Magnet Roller and its Bushing from the 2nd Sleeve/Magnet Roller and its Bushing No Groove in Shaft: 1st Blue Gray Sleeve/Magnet Roller Groove in Shaft: 2nd Sleeve/Magnet Roller 1075D227AA NOTE Install the spring and developing bias terminal as illustrated on the left 1075D228AB 3) Cleaning and Replacement of the Developer Side Seals...

  • Page 366: Cleaning And Replacement Of The Ds Positioning Collars

    4) Cleaning and Replacement of the Ds Positioning Collars Using a soft cloth dampened with alcohol, wipe the Ds Posi- tioning Collars clean of dirt. 1075D231AB Replacement 1. Remove one screw; then, remove the gear holder from the front side of the Developing Unit. 2.

  • Page 367: Filter

    7) Replacement of the Developer Scattering Prevention Filter Press the lock of the Developer Scattering Prevention Filter, slide out and replace the Developer Scattering Prevention Filter. 1075D233AA 8) Removal of the ATDC Sensor 1. Remove the duct cover. 2. Unplug one connector, remove three screws and the ATDC Sensor.

  • Page 368: Fusing Unit

    2-8. FUSING UNIT 1) Removal of the Fusing Unit 1. Swing down the Front Lower Door. 2. Lower Lever M4 and slide out the Transport Tray Assy. 3. Remove three screws and the Fusing Front Cover. 1155D091AA 4. Unplug one connector. 1155D092AA 5.
  • Page 369 4. Remove two screws and the harness cover. 1075D244AA 5. Remove one screw and the Fusing Roller Thermal Fuse holder. 6. Remove two screws and the heater harnesses. 1155D095AA 7. Remove two screws and the Fusing Roller Thermal Fuse. 1075D246AA 8.
  • Page 370 11. Remove two screws and the cover. 12. Remove two screws and the rear harness cover. 1155D098AA 13. Remove two screws and the heater lamp holder (rear). 14. Unplug one connector. 1155D099AA 15. Remove one screw and the front harness cover. 16.
  • Page 371 19. Unplug the connectors of the Cleaning Web Drive Motor and Upper Fusing Roller Thermistor. 20. Remove four shoulder screws, one washer, and the Upper Fusing Unit. 1155D101AA 21. Remove two screws and the Lower Paper Separator Fingers Assy. 1075D253AA 22.

  • Page 372: Cleaning And Replacement Of The Upper Paper Separator Fingers

    24. Remove the Lower Fusing Roller and bearings. NOTE When the Lower Fusing Roller has been removed, clear the count of Fusing Roller of PM Counter 4/4 available from Tech. Rep. mode. 1075D256AA 3) Cleaning and Replacement of the Upper Paper Separator Fingers 1.

  • Page 373: Cleaning And Replacement Of The Upper Fusing Roller Thermistor

    6) Cleaning and Replacement of the Upper Fusing Roller Thermistor 1. Remove the Fusing Unit and harness cover. 2. Unplug one connector and remove one screw and the Upper Fusing Roller Thermistor Assy. 3. Remove one screw and the thermistor from the Upper Fusing Roller Thermistor Assy.

  • Page 374: Replacement Of The Web Roller

    Replacement 1. Free the Lower Fusing Roller Thermistor. 2. Unplug one connector, remove the rubber stopper, and slide out the shaft to remove the Lower Fusing Roller Thermistor. 8) Replacement of the Web Roller 1. Remove the Fusing Unit. Remove the Web Roller Assy from the Fusing Unit.

  • Page 375: Cleaning Of The Upper Transport Roller

    10) Cleaning of the Upper Transport Roller 1. Open the Front Lower Door. 2. Lower Lever M4 and slide out the Transport Tray Assy. 3. Using a soft cloth dampened with alcohol, wipe clean the Upper Transport Roller. 11) Cleaning of the Lower Transport Roller 1.

  • Page 376: Duplex Unit

    2-9. DUPLEX UNIT • Removal of the Duplex Unit 1. Open the Front Lower Door. Slide out the Duplex Unit and, slightly lifting it up, remove it from the copier. 2-10. TURNOVER UNIT • Cleaning of the Turnover Roller/Transport Rollers (Upper/Lower) 1.

  • Page 377: Exit Unit

    2-11. EXIT UNIT • Removal of the Exit/Duplex Switching Unit 1. Remove the Rear Cover, Left Upper Cover and Left Rear Cover. 2. Unplug one connector. 3. Remove one screw and the ground wire. 4. Remove the harness from the cord clamps. 1155D112AA 5.

  • Page 378: Adjustment Jigs And Tools Used

    ADJUSTMENT 3-1. ADJUSTMENT JIGS AND TOOLS USED NOTE The number above the illustration of each jig is the Jig part number. Front Lower Door Interlock Predrive Inhibit Switch Actuating Jig Switch Actuating Jig 1075-7906-02 1067-7901-01 1075D114AA 1075D115AA Scanner Drive Cable Holding Jig PC Drum Paper Separator Fingers Jig 1155-7901-01 1.

  • Page 379: Adjustment Requirements List

    3-2. ADJUSTMENT REQUIREMENTS LIST Adjustment Item Requirements Adjustment Point Ref. page Touch Panel Adj. Automatically adjusted Control Panel D-82 ↑ ↑ Orig. Size Adjust D-83 ↑ ↑ Address Adjust D-84 ↑ ↑ ATDC Sensor Adjust D-85 ↑ ↑ AIDC Sensor Adjust D-86 Universal Tray width detection ↑...

  • Page 380: Adjustment Of Switches

    1151SBD0303A 3-3. ADJUSTMENT OF SWITCHES Microswitches The following microswitches are used in various parts of this copier. Blue (NC) Yellow (NO) Red (COM) Red (COM) 1136D009AA 1136D007AA Wiring for the NC Type Wiring for the NO 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 381: Adjustment Of The Front Lower Door Interlock Switch Position

    2) Adjustment of the Front Lower Door Interlock Switch Position 1. Open the Front Lower Door. 2. Accessing through the notch in the Right Front Cover, loosen the screw that secures the Interlock Switch Assy. 1075D120AA 3. If the Interlock Switch is OFF when the Front Lower Door is closed, move the Interlock Switch Assy towards the front.

  • Page 382: Sensor Adjustment

    3-4. SENSOR ADJUSTMENT • Adjustment of Front Upper Door Set Sensor Position 1. Open the Front Upper Door. 2. Accessing through the notch in the Right Front Cover, loosen the screw by which the Set Sensor Assy is mounted. 1075D128AA 3.

  • Page 383: Adjustment Of Belt Tension

    3-5. ADJUSTMENT OF BELT TENSION Checks after Adjustment 1) Turn the Timing Belt and check that all the Pulleys and grooves of the Belt fit securely. 2) Each Belt should flex a little when the Belt is lightly pressed with a finger. Reference Since a given tension is applied by a tension spring to the Tension Lever that maintains the tension of each timing belt, adjustment is completed by re-tightening the mounting screw after it has been...

  • Page 384: Adjustment Of The Pc/Suction Drive Timing Belt

    3) Adjustment of the PC/Suction Drive Timing Belt 1. Remove the Rear Cover. 2. Remove the Master Board mounting plate Assy. and flywheel. 3. Loosen the screw with which each tension lever is secured as shown on the left and then re-tighten it. 1155D133AB 4) Adjustment of the Duplex Unit Timing Belt 1.

  • Page 385: Adjustment Of The Paper Exit Timing Belt

    6) Adjustment of the Paper Exit Timing Belt 1. Remove the Rear Cover. 2. Remove five screws and the Fusing Unit Drive Assy. 1155D136AA 3. Loosen the screw by which the Tension Lever is mounted as shown on the left and then re-tighten it. 1155D138AA 7) Adjustment of the Scanner Motor Timing Belt 1.

  • Page 386: Adjustment Of The Turnover Unit Timing Belt

    5. Loosen the screw by which the Tension Pulley Assy is mounted and move the assy in the direction of the arrow. 6. After moving it, tighten the mounting screw. 1075D313AA 9) Adjustment of the Turnover Unit Timing Belt 1. Remove the Front Left Cover and Left Front Cover. 2.

  • Page 387: Solenoid Position Adjustment

    3-6. SOLENOID POSITION ADJUSTMENT 1) Adjustment of Manual Feed Paper Pick-Up Solenoid Position Requirement The Paper Stoppers should be fixed perpendicularly when the Pick-Up Solenoid is ON. Adjustment Procedure 1. Remove the Right Door. 2. Remove three screws and the Multi-Bypass Unit. 3.

  • Page 388: Adjustment Of The Duplex Unit Paper Take-Up Solenoid Position

    2) Adjustment of the Duplex Unit Paper Take-Up Solenoid Position Requirement The gap between the E-ring of the plunger and the Take-Up Solenoid should be 2.5 to 3.0 mm when the Take-Up Solenoid is OFF. Adjustment Procedure 1. Remove the Left Lower Door. 2.

  • Page 389: Adjustment Of The Exit/Duplex Switching Solenoid Position

    3) Adjustment of the Exit/Duplex Switching Solenoid Position Requirement The stopper of the Exit/Duplex Switching Plate should be in contact with the guide plate when the Switching Solenoid is energized. Adjustment Procedure 1. Remove the Left Upper Door. 2. Loosen the screw by which the Switching Solenoid Assy is mounted.

  • Page 390: Positioning Of The Pc Drum Paper Separator Fingers [Separator Finger Solenoid

    4) Positioning of the PC Drum Paper Separator Fingers [Separator Finger Solenoid] Requirement The gap between the three PC Drum Paper Separator Fingers and the PC Drum should be 0.3 to 1.0 mm when the Separator Finger Solenoid is OFF. Adjustment Procedure 1.

  • Page 391: Adjustment Of The Duplex Unit Turnover Exit Solenoid Position

    5) Adjustment of the Duplex Unit Turnover Exit Solenoid Position Requirement The gap between the guide fingers and guide plate should be 4 + mm when the Turnover Exit Solenoid is ON. Adjustment Procedure 1. Remove the Left Lower Door. 2.

  • Page 392: Accessing The Tech. Rep. Mode, Security Mode And Adjust Mode

    3-7. ACCESSING THE TECH. REP. MODE, SECURITY MODE AND ADJUST MODE 1) Accessing the Tech. Rep. Mode To access the Tech. Rep. Mode, press the following keys in that order. With the copier turned ON, press the Tech. Rep. Setting Switch. Or, with the Meter Count screen opened from Utility, press the following keys in this order: Stop Key “0”...

  • Page 393: Electrical/Image Adjustment

    3-8. ELECTRICAL/IMAGE ADJUSTMENT 1) Touch Panel Adj. When is this adjustment required? Be sure to perform the Touch Panel Adj. after the following items have been done. 1) Memory Clear 2) Control Panel replacement Adjustment Procedure 1. Call the Tech. Rep. mode to the screen. 2.

  • Page 394: Orig. Size Adjust

    2) Orig. Size Adjust When is this adjustment required? Be sure to perform the Orig. Size Adjust after the following items have been done. 1) Memory Clear 2) A faulty original size detection occurs. 3) Replacement of the CCD Unit and Scanner parts (including the Exposure Lamp) Adjustment Procedure 1.

  • Page 395: Address Adjust

    3) Address Adjust When is this adjustment required? Be sure to perform the Address Adjust after the following items have been done. • Replacement of the CCD Unit and Scanner parts (including the Exposure Lamp) Adjustment Procedure 1. Lower the Electronic Document Hander with no original placed on the Original Glass.

  • Page 396: Atdc Sensor Adjustment (F8 Mode

    4) ATDC Sensor Adjustment (F8 Mode) When is this adjustment required? • Be sure to perform the ATDC Adjustment (F8 mode) after the following items have been done. 1) Starter replacement 2) ATDC Sensor replacement Adjustment Procedure 1. Load the Developing Unit with two packs of fresh starter. 2.

  • Page 397: Aidc Sensor Adjustment (F5 Mode

    5) AIDC Sensor Adjustment (F5 Mode) When is this adjustment required? • Be sure to perform the AIDC Adjustment (F5 mode) after the following items have been done. 1) Starter replacement 2) AIDC Sensor replacement 3) Memory clear NOTE This adjustment must be made after F8 ATDC Sensor Adjustment. Adjustment Procedure 1.

  • Page 398: Universal Tray Width Detection Adjustment (Fd Mode

    6) Universal Tray Width Detection Adjustment (FD Mode) When is this adjustment required? • Be sure to perform the Universal Tray Width Detection Adjustment (FD Mode) after the following items have been done. 1) Memory Clear 2) RAM Board replacement 3) Disassembly of the Universal Tray Adjustment Procedure 1.

  • Page 399: Pc Unit Connection Adjustment

    7) PC Unit Connection Adjustment When is this adjustment required? Be sure to perform the PC Unit Connection Adjustment after the following items have been done. • PC Unit replacement Adjustment Procedure 1. Slide out the PC Unit. 1155D069AA 2. Remove the Rear Cover. 3.

  • Page 400: Transport Unit Connection Adjustment

    8) Transport Unit Connection Adjustment When is this adjustment required? Be sure to perform the Transport Unit Connection Adjustment after the following items have been done. 1) Transport Unit replacement 2) Removal of the Transport Motor and Synchronizing Motor Adjustment Procedure 1.

  • Page 401: Zoom (Fd) Adjust

    9) Zoom (FD) Adjust Requirement Width A on the test pattern output should fall within the following range. Specification Adjust Mode Setting Range 410 ± 0.5 mm Zoom (FD) Adjust -3 to +3 1155D208AA NOTE This adjustment must be made when the PH or the Scanner Drive Cable has been replaced. Adjustment Procedure 1.

  • Page 402: Registration (Cd

    10) Registration (CD) Requirement Width A on the test pattern output should fall within the following range. Specification Adjust Mode Setting Range 5.0 ± 0.5 mm Registration (CD) -8.2 to +8.2 1155D154AB NOTE This adjustment must be made after the PH has been replaced and following the adjustment of the reference Zoom (FD) Adjust.

  • Page 403: Registration (Fd

    11) Registration (FD) Requirement Width A on the test pattern output should fall within the following range. Specification Adjust Mode Setting Range 5.0 ± 0.5 mm Registration (FD) -8.2 to +8.2 1155D155AB NOTE This adjustment must be made after the PH has been replaced and following the Zoom (FD) Adjust. Adjustment Procedure 1.
  • Page 404 6. Use the 10-key Pad to change the setting value. Setting Instructions If width A is longer than the specifications, make the setting value smaller than the current one. If width A is shorter than the specifications, make the setting value greater than the current one. 1) Use the following equation to find the setting value: Specification (5.0 mm) - measurement = setting value 2) If a single adjustment procedure does not successfully bring width A into the specified range, try...

  • Page 405: Lead Edge Erase

    12) Lead Edge Erase Requirement Width A on the test pattern output should fall within the following range. Note: The measurement shall be taken at the center on the leading edge of the paper. Specification Adjust Mode Setting Range 3.0 ± 3.0 mm Lead Edge Erase 0 to 5 1155D156AB...
  • Page 406 12. Press the Start key to let the copier produce a test pattern. Then, press the Stop key. 13. Check to see if width A on the test pattern is up to the specifications. If it is outside the specified range, replace the PH Unit.

  • Page 407: Trail Edge Erase

    13) Trail Edge Erase Requirement Width A on the test pattern output should fall within the following range. Note: The measurement shall be taken at the center on the trailing edge of the paper. Specification Adjust Mode Setting Range 3.0 ± 3.0 mm Trail Edge Erase 0 to 5 1155D157AB...
  • Page 408 12. Press the Start key to let the copier produce a test pattern. Then, press the Stop key. 13. Check to see if width A on the test pattern is up to the specifications. If it is outside the specified range, replace the PH Unit.

  • Page 409: Loop Adjustment

    14) Loop Adjustment Requirement Adjust so that a correct loop is formed at part A when paper is fed through. Specification Adjust Mode Setting Range Approx. 3.0 mm (visual) Loop Adjustment -3 to +3 NOTE This adjustment is to be made when any of the following symptoms occurs: variations in the amount of print leading edge void, paper skew, folded edge, and misfeed.
  • Page 410 If the loop length falls outside the specified range, perform the following adjustment steps. 4. Call the Tech. Rep. mode to the screen. 5. Touch [Tech. Rep. Choice] and [Printer], in that order. 6. Touch [Loop Adjustment]. 7. Use the 10-key Pad to change the setting value. Setting Instructions If loop length A is longer than the specifications, make the setting value smaller than the current one.

  • Page 411: Table

    15) γ Table Requirement The gradation on the test pattern output should fall within the range between the upper and lower limits when compared with the reference gradation. <Reference Gradation> 1138D349AA 1138D349AA NOTE This adjustment must be made when the PC Drum has been replaced. Adjustment Procedure 1.
  • Page 412 6. Press the Start key to let the copier produce a test pattern. Then, press the Stop key. 7. Compare the test pattern output with the reference gradation to determine if the output falls within the range between the upper and lower limits. If it falls outside the range, perform the following adjustment steps.

  • Page 413: Erasure Width

    16) Erasure Width Requirement Adjust so that dimensions A and B on the copy of the test chart fall within the following specifications. Setting Zoom Ratio Specification Adjust Mode Range Full size 3.0 mm Erasure Width 0 to 5 (×1.000) 1155D162AB NOTE This adjustment must be made when a shadow is produced from the Original Scale.
  • Page 414 8. Use the 10-key Pad to change the setting value. Setting Instructions If width A/B on the copy of the test chart is longer than the specifications, make the setting value smaller than the current one. If width A/B is shorter than the specifications, make the setting value greater than the current one. •...

  • Page 415: Zoom (Cd

    17) Zoom (CD) Requirements 1) The difference should be within ± 0.5% of the actual length. 2) Adjust so that the following specifications are satisfied with a scale length of 200 mm. Zoom Ratio Specification Adjust Mode Setting Range Full size (×1.000) 200 ±...
  • Page 416 5. Use the 10-key Pad to change the setting value. Setting Instructions 1) If the scale on the copy is longer than the actual scale, decrease the setting value. 2) If the scale on the copy is shorter than the actual scale, increase the setting value. * If the measurement does not fall within the specifications through one setting, try another setting.

  • Page 417: Zoom (Fd

    18) Zoom (FD) Requirements 1) The difference should be within ± 0.5% of the actual length. 2) Adjust so that the following specifications are satisfied with a scale length of 300 mm. Zoom Ratio Specification Adjust Mode Setting Range Full size (×1.000) 300 ±...
  • Page 418 5. Use the 10-key Pad to change the setting value. Setting Instructions 1) If the scale on the copy is longer than the actual scale, decrease the setting value. 2) If the scale on the copy is shorter than the actual scale, increase the setting value. * If the measurement does not fall within the specifications through one setting, try another setting.

  • Page 419: Scale (Cd

    19) Scale (CD) Requirement Adjust so that the leading edge of the image of the scale on the copy sample falls within the specified range with respect to the Original Width Scale. Specification Adjust Mode Setting Range 0 ± 0.5 mm Scale (CD) -7.0 to +7.0 NOTES...
  • Page 420 9. Use the 10-key Pad to change the setting value. Setting Instructions If the scale image on the copy is on the + end with respect to the Original Width Scale, make the setting value smaller than the current one. If the scale image on the copy is on the - end with respect to the Original Width Scale, make the setting value greater than the current one.

  • Page 421: Scale (Fd

    20) Scale (FD) Requirement Adjust so that the leading edge of the image of the scale on the copy sample falls within the specified range with respect to the Original Length Scale. Specification Adjust Mode Setting Range 0 ± 0.5 mm Scale (FD) -12.0 to +12.0 NOTES...
  • Page 422 10. Use the 10-key Pad to change the setting value. Setting Instructions If the scale image on the copy is on the + end with respect to the Original Length Scale, make the setting value smaller than the current one. If the scale image on the copy is on the - end with respect to the Original Length Scale, make the setting value greater than the current one.

  • Page 423: Focus-Positioning Of The Scanner And 2Nd/3Rd Mirrors Carriage

    21) Focus-Positioning of the Scanner and 2nd/3rd Mirrors Carriage When is this adjustment required? • After the Scanner Drive Cable has been replaced. • When the Scanner Fixing Bracket has been removed from the Scanner Drive Cable. • When the Scanner Drive Cable comes unwound. Requirement With the Scanner 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...

  • Page 424: 2Nd/3Rd Mirrors Carriage Height Adjustment

    22) 2nd/3rd Mirrors Carriage Height Adjustment Requirement Adjust so that the amount of skew on the copy of the test chart falls within the following range. Specification Movable Range of Mounting Bracket ± 3.0 mm ± 1.5 mm Skew1 Skew2 1155D223AA Adjustment Procedure 1.
  • Page 425 8. Slide the 2nd/3rd Mirrors Carriage to the right as viewed from the rear of the copier. 1155D226AA 9. Loosen the screw for adjusting height of the 2nd/3rd Mirrors Carriage and move the mounting bracket as detailed below:. Adjustment Procedure If the skew is: In the direction of skew 1: Move the mounting bracket to the left as viewed from the rear...

  • Page 426: Installation Of The Plug-In Counter (Option) Mounting Bracket

    MISCELLANEOUS • INSTALLATION OF THE PLUG-IN COUNTER (OPTION) MOUNTING BRACKET Installation Procedure 1. Remove the counter cover from the Right Front Cover. 2. Open the Front Lower Door. 1075D288AA 3. Remove the Right Front Cover. 4. Remove the Total Counter cover. 1075D123AA 5.

  • Page 431: Electrical Parts Layout

    SYMBOL PART NAME LOCATION SYMBOL PART NAME LOCATION PWB-A Master Board D~I-10~15 Power Switch PWB-B Memory Board F~I-16~18 Lower Front Door Interlock Switch PWB-C Power Supply Board A~G-34~35 Right Door Interlock Switch ELECTRICAL PARTS LAYOUT PWB-D Noise Filter Board H~I-33~34 Upper Left Door Interlock Switch H~I-4 PWB-E...
  • Page 432 CONNECTORS LAYOUT CN No. TYPE LOCATION CN No. TYPE LOCATION CN70 CN23 PC Unit CN25 QR/P C-11 CN71 CN24 CN64 CN73 CN26 D-13 CN74 G-11 UN10 CN29 PWB-IC CN21 PWB-IB C-11 CN78 CN27 CN11 QR/P4 E-11 CN79 1155M091AA PWB-P CN60 CN59 PWB-J CN13...
  • Page 466 1155SB000EA Copyright 1998 MINOLTA CO., Ltd. Printed in Japan Use of this manual should be strictly supervised to avoid disclosure of confidential information. 1155-7997-11 98022370 MINOLTA CO., LTD. 17196...

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