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Ricoh M5 Service Manual

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RICOH M5
S E R V I C E
M A N U A L

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  • Page 1 RICOH M5 S E R V I C E M A N U A L...
  • Page 2 O P E R A T I N G I N S T R U C T I O N S...
  • Page 3 May, 25, 1985 INTRODUCTION The Ricoh M5 is a desktop plain paper copier which is carefully manufactured to exacting standards of high per- It consistently yields high contrast copies with formance. a superior finish. This manual contains detailed instructions on the opera- get the maximum tion and care of the M5.

  • Page 4: Table Of Contents

    May, 25, 1985 CONTENTS 1. INSTALLATION ......1 1-1. Unpacking procedure ....1 1-2.

  • Page 5: Installation

    May, 25, 1985 1. INSTALLATION 1-1. UNPACKING PROCEDURE Take out the accessary box and the machir R e m o v e t h e t w o cushion blocks. Open the viny bag and take out the machine. C h e c k t h e q u a n t i t y o f t h e accessories using the follow- list.

  • Page 6: Installation Procedure

    May, 25, 1985 1-2. INSTALLATION PROCEDURE Remove the two strips of tape. Slider Z. Move the slider to the left until the right edge of the copier is exposed. 3. Squeeze the release latch and open the top unit. Release Latch 4.
  • Page 7 May, 25, 1985 5. Lower the master release lever. Master Release Lever 6 . R e m o v e t h e t h r e e w e d g e s from the master unit. Note: Do not touch the master ( p u r p l e m a t e r i a l ) a n d avoid’...
  • Page 8 Return the master release lever to its original position. 10 . Shake a cartridge of oner well. 11 . pins h e t o n e r cartridge into the slots on the development unit. Then, turn cartridge counter- clockwise. 12 .
  • Page 9 May, 25, 1985 14. Load paper in the cassette a s shown on page 17, and insert t h e l o a d e d c a s s e t t e until it stops. 15. Install the copy tray on the left side of the machine.

  • Page 10: Installation Requirements

    May, 25, 1985 1-3. INSTALLATION REQUIREMENTS The installation Iocatlon should be carefully chosen because environmental condi- 1l-ons greatly affect the performance of a copier Optimum environmental conditions: . Temperature ..10–30° C . Well-ventilated and wide room (50-86°...
  • Page 11 May, 25, 1985 E n v i r o n m e n t s t o a v o i d : Locations exposed to direct sun- Dusty areas ‘ light or strong light (more than 1,500 Iux) 2,000 A r e a s higher than (6,500 ft) above sea level...

  • Page 12: Power Connection

    POWER CONNECTION C o n n e c t t h e power cord to a D o n o t s e t a n y t h i n g o n t h e power source as shown below power cord.

  • Page 13: Guide To Components

    May, 25, 1985 2. GUIDE TO COMPONENTS 2-1. OVERALL MACHINE LAYOUT Cassette Guide — Exit Cover Top Unit Master Unit – 9 —...

  • Page 14: Operation Panel

    OPERATION PANEL 2-2. Check Paper Path Indicator 8. Manual Feed Indicator 2. Replace Master Unit 9. Start Key Indicator K e y 10, Clear/Stop 3. Add Toner Indicator Increase Quantity Key 4. Check Cassette Indicator 12. Decrease Quantity Key Image Density Indicators 13.

  • Page 15: Operator Controls

    M a y , 2 5 , 1 9 8 5 2-3. OPERATOR CONTROLS Check Paper Path Indicator Lights when there is a paper misfeed within the copier. Replace Master Unit Indicator Lights when it is time to change the master unit. Add Toner Indicator Lights when it is time to change the toner cartridge.
  • Page 16 May, 25, 1985 Manual Feed Indicator Lights when copy paper has been inserted. Blinks when the next sheet of copy paper should be inserted. Start Key Press to start copy operation. Clear/Stop Key Press to cancel the copy num- W h i l e c o p y i n g , ber entered.

  • Page 17: Copying

    May, 25, 1985 3. COPYING 3-1. STARTING THE COPIER Turn on the main switch. The Wait indicator ( ~ ) will turn on, which means the copier warming up. When this indica or turns off, copies can be m ade. 3-2.

  • Page 18: Manual Feed Copying

    May, 25, 1985 Enter the number of copies required b y p r e s s i n g Increase Quantity key. (Use the Decrease Quantity k e y i f y o u e n t e r t o o m a n y copies.) copies entered at one time.

  • Page 19: Two-Sided Copying

    May, 25, 1985 3-4. TWO-SIDED COPYING 1. Copy the first side in the nor- mal manner. Then, insert the c o p y i n t o t h e m a n u a l f e e d u n t i l t h e M a n u a l entrance Feed indicator lights.

  • Page 20: Color Copying

    May, 25, 1985 3-5. COLOR COPYING Blue, green, and red development units and toner are available as options in addition to standard black. (You need a separate development unit for each color.) Example: Making a green and blue copy. Install the green development unit in the copier.

  • Page 21: Replenishing Supplies

    May, 25, 1985 4. REPLENISHING SUPPLIES Lift pull cassette. Load paper into the cassette so that it is flush with the front and side fences. Note: The holds cassette approximately sheets. Press down the corners of the paper stack so that they catch underneath the corner separa- tors.

  • Page 22: Paper Storage

    May, 25, 1985 Paper Storage Paper should always be stored properly, because poor paper condition will result in .poor image reproduction, creased copies, and paper jams. Generally, to avoid absorption of moisture and curling: . Avoid storing paper in humid areas.
  • Page 23 Open the top unit. 2. Take out the toner cartidge. 3. Shake a new cartridge of toner well pins toner cartridge into the slots on the development unit. Then, turn counter- cartridge clockwise. 5. Install the cartridge crank onto the shaft and turn the cartridge crank clockwise to strip off the cartridge seal.
  • Page 24 Toner Storage Store in a COOL, DARK place. NEVER store toner where it will be exposed to heat. . Keep out of reach of children. Do not take internally. Do not lay anything heavy on toner cartridges. 2 0 — –...

  • Page 25: Replacing The Master Unit

    May, 25, 1985 5. REPLACING THE MASTER UNIT Squeeze the release latch and open the top unit. Lower the master release lever and slide Out the used master unit. Dispose of the used unit using the provided vinyl bag. R e m o v e t h e t h r e e w e d g e s from the new master unit...
  • Page 26 4. Insert the master unit into the copier. 5. Peel off the polyester cover that protects the master. 6. Returnth e master release lever to its original position. 7. Lower the top unit. — –...

  • Page 27: Troubleshooting

    May, 25, 1985 6. TROUBLESHOOTING 6-1. CLEARING MISFEEDS before exiting the copier. Raise the top unit and remove the jammed paper. Note: Do not touch the master (purple material). If the paper is caught inside pull the cassette, cassette and remove the jam- med paper.
  • Page 28 May, 25, 1985 6-2. TROUBLESHOOTNG GUIDE 1. Faint Copies or White Stripes on Copies Agitate the toner. (1) O p e n the top unit and insert the narrow tab of the toner agitator into the slot in development unit cover. from Slide the toner agitator end to end several times.
  • Page 29 May, 25, 1985 Clean the corona wire with the short pad of the cleaner. Gently rub the cleaner along the wire. (4) Keep the cleaner on the holder inside the copier. Copies have Dark stripes or Heavy Background First, try pressing the Lighter key to adjust the image density.
  • Page 30 May, 25, 1985 ” 3 . N o t h i n g H a p p e n s W h e n switch Main is Turn- – No Indicators On – the power cord plugged in? into been firmly inserted the copier? completely clos- the top unit...

  • Page 31: Service Codes

    May, 25, 1985 6-3. SERVICE CODES The copier’s microcomputer con- stantly monitors mechanical and electrical functions. If a malfunc- will turn on and a service code will be displayed in the copy count- er. If this happens, turn off the main switch, wait a few seconds, and then turn it on again.
  • Page 32 May, 25, 1985 7. MAINTENANCE To maintain a high copy quality, clean the exposure glass and platen cover regularly. Exposure Glass Clean the exposure glass with a soft cloth and commercial glass cleaner. . Platen C o v e r Clean the platen cover with a damp If stains do not come off, cloth.

  • Page 33: Transporting The Copier

    May, 25, 1985 8. TRANSPORTING THE COPIER Before moving the copier from its place of installation, remove the copy tray and secure the slider with strips of tape. The copier may be badly damaged if it is moved when the slider is not pro- F o r M A X I M U M perly secured.
  • Page 34 : Approximately kg (44 lb) Note: To obtain the best copies, use Ricoh FT paper or a similar bond paper, Ask your sales or service representative to recommend a brand of paper that is suitable for use with the M 5 .
  • Page 35 S E R V I C E M A N U A L...
  • Page 36 Contents .......* ..* ..**. Specifications ....-.’...
  • Page 37 May, 25, 1985 9. Cleaning of Parts Fiber Optics ..........3-29 10.
  • Page 38 May, 25,1985 Replacement of Parts 3 - 5 8 Paper Feed Solenoid ........3 - 5 9 Registration Solenoid .
  • Page 39 Service Tables I. Maintenance Guidance ......... . 2.

  • Page 40: Specifications

    SECTION 1 SPECIFICATIONS...

  • Page 41: Copy Processes

    May, 25, 1985 Desktop (Moving platen) Configuration: Mono-component dry toner process Copy Process: Originals: Book/sheet .-. ” A4 (210 x 297 mm) Maximum Original Size: Letter (8-1 /2” x 11”) Maximum: A4 (210 x 297 mm) Copy Paper Size: Letter (8-1/2” x 11“) Minimum: Business card size (49 x 84 mm, 2“...
  • Page 42 May, 25, 1985 Single-wire with grid plate (Scorotron) Master Charge: Slit exposure, moving platen Exposure System: Fluorescent lamp 14 W Exposure Lamp: 5 W (When plugged in) Exposure LampHeater: Fiber optics Optics: Floating electrode roller system Development: (mono-component dry toner) Cartridge (70 g/black toner) Toner Replenishment: (50 g/color toner)
  • Page 43 May, 25, 1985 (W x D x H) Dimensions: Without Cassette and Copy Tray 404mm x 485 mm x 225 mm 8 - 7 / 8 ” ) (16“ X 19“ X With Cassette and Copy Tray 610 mm x 485 mm x 225mm ( 2 4 ”...

  • Page 44: Power Distribution

    SECTION 2 OVERALL MACHINE INFORMATION I. Functional Operation ..........2-1 2.

  • Page 54: Ac Power Distribution

    May, 25, 1985 Power Distribution — AC Power Distribution — -.” When the main switch is turned on, ac input voltage is supplied to the dc power supply board, ac drive board, and the triac. After the main board becomes active, it activates the triac, which then supplies ac power to the fusing lamp.

  • Page 55: Dc Power Supply

    May, 25, 1985 – DC Power Supply – This copier uses two dc power levels: +5 volts and +22 volts. The 29.5 Vac input from the transformer is rectified by DBA20B. The chopper-stabilized amplifier smoothes the output and amplifies the potential to +22 volts. This +22 volt output drives the dc components that have a relatively large current requirement, such as the power packs and solenoids.

  • Page 56: Power-On Reset

    25, 1985 May, – Power-On Reset – The reset circuit outputs a one-shot LOW pulse which resets the CPU. When the main switch is turnedon, +3.9 volts is applied to pin 6 of ICI 02, and the output becomes LOW. The output of IC102 stays LOW until Cl 05 charges to +3.9 volts (which takes about 35 ins).
  • Page 57 SECTION 3 SECTIONAL DESCRIPTIONS Master Unit ............Charge .

  • Page 58: Master Unit

    May, 25, 1985 MASTER UNIT Introduction lade Overflow Sensor caning Section The master unit consists of the master belt, the grid plate, and the cleaning section. The master is an organic-photoconductor belt. It makes two rotations per copy. The master has the characteristics of high electrical resistance in the dark, low electrical resistance when exposed to light, and flexibility.

  • Page 59: Master Sensor

    May, 25, 1985 2. Master Sensor Master Sensor Master Sensor The master sensor detects a reflective plate (called the sensor plate) on the edge of the master belt This tells the CPU the location of the master bond seam and sets start once each master rotation.

  • Page 60: Master Sensor Circuit

    May, 25, 1985 3. Master Sensor Circuit Main Board The main board applies +5 volts from CN1 02-12 to CN709-1 of the master sensor. A long as the However, when the sensor plate on the master belt sensor is off, +5 volts is present at CN102-13. passes under the sensor, the phototransistor turns on and CN102-13 drops to O volts.

  • Page 61: Charge

    May, 25, 1985 CHARGE 1. Charge Corona This model uses a single wire corona unit to charge the master (organic photoconductor belt). The corona wire generates a corona of negative ions when a high negative voltage is applied to it by the charge power pack.

  • Page 62: Charge Corona Circuit

    25, 1985 May, 2. Charge Corona Circuit Main Board Power Pack-Charge The dc power supply board supplies +22 volts through the interface board and the main board to CN706-I as the power input of the charge power pack. CN706-3 is the trigger input. the 24th pulse after the sensor plate on the master is detected, the CPU drops CN102-4 from +22 volts to O volt.

  • Page 63: Replacement Of Parts

    May, 25, 1985 Replacement of Parts — Charge Corona Wire – .-. . Front Cover Rear Endblock remove the master Open the upper clamshell and unit. (Do not place the master unit where it will be exposed to strong light.) Unplug the high voltage cable from the power pack.

  • Page 64: Charge Corona Power Pack

    May, 25, 1985 – Charge Corona Power Pack – Ground Wire 1. Remove the front cover. (See page 3-79.) 2. Disconnect the 3P connector from the power pack. 3. Remove the ground wire from the frame (1 screw). 4. Remove the charge power pack (1 screw). 5.

  • Page 65: Exposure

    25, 1985 May, EXPOSURE 1. Introduction Exposure Light While the slider moves forward (in the arrow direction), a fluorescent lamp illuminates the surface of the original on the exposure glass. An image of the original is reflected through the fiber optics onto the master surface. Where the light strikes the master surface, the electrical resistance of the master surface decreases Where no light strikes the master surface, the and the charge on the master surface is dissipated.
  • Page 66 May, 1985 Original Slider Exposure Glass Copy Paper The master’s rotation speed is the same as the forward speed of the slider. So, after exposure, the charge pattern remaining on the master surface is an exact mirror replica of the original image as This charge pattern is called the latent image.

  • Page 67: Slider Drive

    May, 25, 1985 2. Slider Drive Reverse Clutch Slider (Forward) When the motor turns on, drive is transferred to the input gear as shown above. Drive then main passes through the clutch unit to the slider drive gear (pinion). The slider drive gear is engaged with the rack underneath the slider, and moves the slider as discussed in the following sections.
  • Page 68 Rest Position (1.8) (2.6) Home Position Forward (3.7) Cam A Home Position SW Return Position (4) Reverse (5) Cam B 3-11...
  • Page 69 May, 25, Rest Position When the Start key is pressed, the main motor turns on and the slider solenoid stays off. Since the slider solenoid is off, the reverse pawl engages the ratchet ring of the reverse clutch. The reverse clutch then engages and the slider moves from the rest position towards home position.

  • Page 70: Clutch Operation

    May, 25, 1985 3. Clutch Operation (Figure B) (Figure A) Solenoid Solenoid .- . Input Gear Clutch Sleeve Ratchet Ring Loosen Tighten Slider Slider Drive Gear Slider Drive’ Gear Gear B — Forward – Before the slider solenoid turns on, the clutch sleeve turns freely. This allows the clutch spring to be loose (figure A).
  • Page 71 25, 1985 May, Input Gear Input Gear Slider Drive Gear Slider Drive Gear Slider Gear — Reverse – When the slider solenoid turns off, the spring on the reverse pawl rotates the pawls counterclockwise. (page 3- 11 figure 5) The reverse pawl engages with the reverse ratchet ring. The clutch then engages as discussed previously under “- F o r w a r d –...

  • Page 72: Slider Lock Mechanism

    25, 1985 May, Slider Lock Mechanism Slider Gear B Lock Ratchet Slider When the clamshell is opened, a spring forces the slider stopper to engage with the slider lock ratchet on gear B. The stopper prevents gear B from turning counterclockwise, so the slider drive gear can- not turn clockwise.

  • Page 73: Slider Control Circuit

    May, 25, 1985 5. Slider Control Circuit Slider Solenoid When the slider home position is confirmed, the CPU drops CN103-12 from +22 volts to O volt This occurs 63 pulses after the sensor plate on the master is which energizes the slider solenoid. detected.

  • Page 74: Exposure Lamp Control Circuit

    25, 1985 May, 6. Exposure Lamp Control Circuit Exposure Sensor Main Boar-cl The control circuit shown above maintains a stable exposure lamp light output. The major compo- nents are the main board, the exposure lamp stabilizer, and the exposure sensor. –...
  • Page 75 May, 25, 1985 — Exposure Sensor — The exposure sensor measures the intensity of the light output by the exposure lamp and provides a feedback signal to the main board. The sensing element is a photodiode (PD). It regulates current in response to the light intensity of the exposure lamp.

  • Page 76: Lamp Heater Circuit

    25, 1985 May, 7. Lamp Heater Circuit heater is installed next to the surface of the exposure lamp. light intensity within the range of Heating the lamp decreases the time required to bring the lamp’s exposure compensation. This lamp warm-up time depends on the selected image density level and atmospheric tem- perature.

  • Page 77: Replacement Of Parts

    25, 1985 May, 8. Replacement of Parts — Exposure Glass – .-. . 1. Hold the front side of the platen cover and push it towards the rear to disengage the fasteners. Handle the platen cover carefully. CAUTION: The fasteners break off under strong force. 2.

  • Page 78: Fiber Optics

    25, 1985 May, — Fiber Optics — Reflector Leaf Spring 1. Remove the 2. Remove the 3. Remove the 4. Remove the 5. Remove the 6. Remove the 7. Pull out the NOTE: 1. Do not touch the upper and lower surfaces of the fiber optics. 2.

  • Page 79: Exposure Lamp

    May, 25, 1985 – Exposure Lamp – .-. ” Exposure Lamp Front E Term Aperture Surface sure Lamp 1. Remove the front and rear covers. (See page 3-79.) 2. Remove the slider. (See page 3-79.) 3. Remove the exposure cover (1 screw). 4.
  • Page 80 25, 1985 May, Slider Drive Gear Slider Clutch Bracket Pulse Generator Bracket 2P Connector Follow steps 1 through 6 of Exposure Lamp Replacement. (See page 3-22.) Remove the accuride rail (3 screws). Remove the pulse generator bracket (1screw). Take off the slider clutch bracket (3 screws) and unhook the slider stopper spring from the bracket.

  • Page 81: Exposure Lamp Stabilizer

    May, 25, 1985 — Exposure Lamp Stabilizer – -.’ Exposure Lamp Stabilizer 1. Remove the front cover. (See page 3-79.) 2. Disconnect the 5P and 3P connectors from the stabilizer. 3. Remove the exposure lamp stabilizer (2 screws). 3 - 2 4...

  • Page 82: Slider Clutch

    May, 25, 1985 – Slider Clutch – Remove the slider and rear cover (See page 3-79.) Disconnect the two 2P and two 3P connectors. Remove the pulse generator bracket (1 screw). Remove the wire harness from the wire clamp. Remove the slider clutch bracket (3 screws) and bracket.
  • Page 83 May, 25, 1985 Forward Clutch Reverse Clutch Install new clutch springs in the clutches. NOTE: The forward and reverse clutch springs are similar, but they coil in different direc- (See the figure.) Be careful not to mix them up. tions. 10.

  • Page 84: Slider Solenoid

    25, 1985 May, – Slider Solenoid – Slider Female Connector Remove the slider and rear cover. (See page 3-79.) Disconnect two 2P and 3P connectors. Remove the pulse generator bracket (1 screw). Remove the slider clutch bracket (3 screws), and unhook the slider stopper spring. (Do not break the slider stopper pin.) Remove the solenoid 2P female connector from the slider clutch bracket.

  • Page 85: Home Position Switch

    May, 25, 1985 – Home Position Switch – Bracket Shaft (See page 3-79.) 1. Remove the slider and the rear cover. 2. Remove the home position switch together with the plastic bracket using needle-nose pliers. 3. Remove the 2P female connector from the slider clutch bracket. NOTE: After installing a new switch, make sure it turns ON and OFF.

  • Page 86: Cleaning Of Parts

    May, 25, 1985 Parts 9. Cleaning of — Fiber Optics — Slider Fiber Optics — Upper Side of Fiber Optics – 1. Move the slider to the right. the accuride rail. 2. Remove the stud screw from 3. Move the slider to the left until the fiber optics are visible. 4.

  • Page 87: Lubrication Of Parts

    25, 1985 May, 10. Lubrication of Parts – Fiber Optics Holder – slider to the right. Move the the stud screw from the accuride rail. Remove 3. Move the slider to the left until the fiber optics holders are visible. 4.

  • Page 88: Development

    May, 25, 1985 DEVELOPMENT 1. Black Development Master Belt Bias Brush Mixing Plate Toner Supply Bar \ Development Roller Toner Metering Blade — Introduction — The development unit transforms the electric latent image on the master surface into a visible toner image.
  • Page 89 25, 1985 May, – Development Roller – Floating Electrode Magnetic Insulating Layer The development roller used in this copier is unique. The development roller rotates at approximate- ly 300 rpm. Its surface has a floating electrode layer which insulates the surface charge from the conductor.

  • Page 90: Color Development

    25, 1985 May, Color Development Toner Cartridge Bias Brush Toner Mixing Plate – Color Toner – The major difference between color development and black ferrite development is that color toner Color toner adheres to the development roller because of static contains no ferrite material.
  • Page 91 May, 25, 1985 – Color Development Roller – Blade development roller The difference between the ferrite-type material of the floating electrodes. The color development roller has carbon floating electrodes imbedded in it instead of cop- per. Carbon has a high co-efficient of friction and a low electrical resistance, which helps in creating static electricity.

  • Page 92: Bias Application

    May, 25, 1985 3. Bias Application Black Toner Develo Development as Plate erminal Color Toner Development Toner Metering Blade Develop Bias Plate Bias Terminal Bias Brush NOTE: (The color toner development) In this copier, the development bias is applied to the toner metering blade, the bias brush, and the As the development roller turns past the blade, the bias charge core of the development roller.
  • Page 93 May, 25, 1985 3. Bias Application Black Toner Develo Development as Plate erminal Color Toner Development Toner Metering Blade Develop Bias Plate Bias Terminal Bias Brush NOTE: (The color toner development) In this copier, the development bias is applied to the toner metering blade, the bias brush, and the As the development roller turns past the blade, the bias charge core of the development roller.

  • Page 94: Drive Mechanism

    25, 1985 May, 4. Drive Mechanism Black Toner Development Color Toner Development 6 4 3 Drive of black toner development: Drive of color toner development: 1 Timing Belt Belt 1 Timing 2 Timing Belt Pulley 2 Timing Belt Pulley 3 Idler Gear A 3 Idler Gear A Development Roller Gear A 4 Development Roller Gear B...

  • Page 95: Toner End Mechanism

    25, 1985 May, 5. Toner End Mechanism Insufficient Condition Sufficient Condition Toner Toner End Sensor Drive Spring The toner end detection mechanism uses an actuator and a photointerruptor. When the toner tank is full, the actuator stays in the photointerruptor. However, when the tank contains approximately 60 grams of toner, the actuator leaves the photo interrupter one time for every revolution of the toner mixing gear.

  • Page 96: Development Cover Mechanism

    25, 1985 May, 6. Development Cover Mechanism Cover When the development unit is in the copier, the cover spring rotates the cover lever clockwise as The sector gear on the cover lever turns the cover gear, opening the develop- shown by the arrow. At this time, the cover arm enters a slot on the upper feed guide which is lower ment roller cover.

  • Page 97: Bias Circuit

    May, 25, 1985 7. Bias Circuit The above diagram shows bias control circuit in block form. The dc power supply board supplies +22 volts to CN714-1 of the transfer/bias power pack. The de/de converter changes this input to the high voltage used for development bias. The bias trigger (CN101-7) is LOW active.

  • Page 98: Toner End Sensor Circuit

    May, 25, 1985 8. Toner End Sensor Circuit Main Board The CPU monitors the toner end sensor to determine whether a toner end condition exists. If CN103-8 drops to LOW three of more times during machine cycle, the CPU stops the copier and lights the Add Toner indicator.

  • Page 99: Replacement Of Parts

    May, 25, 1985 9. Replacement of Parts – Toner Metering Blade – Cover 1. Open the upper clamshell and remove the development unit. 2. Remove the toner cartridge. 3. Remove the front cover of the development unit (1 screw). 4. Remove the roller cover bracket (1 screw), and take off the development roller cover. 5.

  • Page 100: Image Transfer And Separation

    May, 25, 1985 IMAGE TRANSFER AND SEPARATION 1. Image Transfer Master Belt The relay rollers feed the copy paper through the transfer entrance guides to the transfer section. A high negative voltage is applied to the transfer corona wire, and as a result the corona wire generates a cloud of negative ions.

  • Page 101: Transfer Corona Circuit

    May, 25, 1985 3. Transfer Corona Circuit The above diagram shows the transfer corona control circuit in block form. The dc power supply board supplies +22 volts to CN714-1 of the transfer/bias power pack. The de/de converter changes this input to the high voltage used by the transfer corona. The CPU drops CN101-7 to O volt to turn on the transfer corona.

  • Page 102: Replacement Of Parts

    25, 1985 May, 4. Replacement of Parts — Transfer Corona Nylon Wire — .- . Transfer Corona Unit Unit Nylon Wire Open the upper clamshell and remove the development unit. Swing open the upper guide. Remove the transfer unit stopper (1 screw). Use a stubby screwdriver. power pack using needle-nosed Swing up the corona unit and unplug the transfer cable from the pliers.

  • Page 103: Transfer Corona Wire

    25, 1985 May, — Transfer Corona Wire — Front Endblock Cover .-. . Rear Endblock Cover Front Endblock Stud Follow steps 1 through 5 of Transfer Corona Nylon Wire Replacement. (See page 3-44.) (See the figure.) Gently remove the front and rear endblock covers together with the wire. Replace the corona wire as follows: Hook the large eyelet of the wire to the rear stud.

  • Page 104: Transfer/Bias Powerpack

    May, 25, 1985 — Transfer/Bias Power Pack – Power Pack 1. Follow steps 1 through 5 of Transfer Nylon Wire Replacement. (See page 3-44.) 2. Disconnect the 3P connector and the bias cable (B). 3. Remove the power pack (2 screws). 3 - 4 6...

  • Page 105: Cleaning

    25, 1985 May, CLEANING 1. Introduction Cleaning Blade After image transfer, the master moves past the cleaning section. There, the cleaning blade wipes off any toner remaining on the master surface. The toner hat drops is then moved into the used toner tank by the toner sweeping bar. 3 - 4 7...

  • Page 106: Toner Overflow Detection

    25, 1985 May, 2. Toner Overflow Detection Toner Overflow Sensor Full This copier uses a photosensor to detect toner overflow (used toner tank full). When the toner tank is empty the rubber cup rests inside the master unit. However, when the toner tank is full, toner pushes the rubber cup outward.

  • Page 107: Toner Overflow Sensor Circuit

    May, 25, 1985 Toner Overflow Sensor Circuit The main board applies +5 volts to CN708-1 to power the toner overflow sensor. The sensor signal is applied to the main board at CN102-8. When the rubber cup enters the photosensor, CN102-8 goes from LOW to HIGH and the Replace Master indicator turns on.

  • Page 108: Quenching

    25, 1985 May, QUENCHING 1. Introduction Quenching Lamp Master Unit Quenching Lamp After cleaning, the quenching lamp illuminates the master surface. This illumination is to prepare for the next copy cycle. It neutralizes any latent image charge remaining on the master surface. This machine uses a row of LEDs for master quenching.

  • Page 109: Quenching Lamp Circuit

    May, 1985 2. Quenching Lamp Circuit To light the quenching lamp, the CPU drops CN102-9 to LOW. This occurs at almost the same time that the Start key is pressed. The quenching stabilizer receives +22 volts at CN707-1. When the main motor turns off, CN102-9 goes back to HIGH, turning off the quenching lamp. 3.51...

  • Page 110: Replacement Of Parts

    M a y , 2 5 , 1 9 8 5 3. Replacement of Parts – Quenching Lamp – .- . Holder / ’ Quenching Lamp Quenching Lamp Connector (See page 3-79.) 1. Remove the front cover. 2. Disconnect the quenching lamp connector. 3.

  • Page 111: Paper Feed And Registration

    25, 1985 May, PAPER FEED AND REGISTRATION 1. Introduction Feed Roller Relay Rollers ntrance Paper can be fed either automatically from the cassette or manually one sheet at a time. The capacity of the cassette is about 100 sheets (depending on paper thickness). To start the paper feed sequence from the cassette, the pick-up roller rotates to drive the top sheet of paper forward.

  • Page 112: Paper Feed Mechanism

    25, 1985 May, 3. Paper Feed Mechanism Pick-up Roller (Figure C) Spring Clutch , Paper Feed Solenoid When the roller is not in use, the flat-side is face-down The pick-up roller has a semi-circular shape. (Figure A, dotted line). When the master sensor detects the sensor plate, the paper feed solenoid turns on for 17 pulses.

  • Page 113: Registration

    25, 1985 May, 4. Registration Registration Plate VVhen the leading edge of the paper contacts the registration plate, the paper stops. feed rollers then start to slip. This slippage occurs because of the low pressure between the feed rollers and follower roller on the development lower cover.
  • Page 114 May, 25, 1985 5. Paper Feed and Registration Timing Interface Board The main board controls all of the components shown the above diagram in the same way. The dc power supply board supplies +22 volts through the interface board to the paper feed and registration solenoids.
  • Page 115 May, 25, 1985 When the slider moves away from the home position, the home position switch opens and CN103-9 At the proper time, depending upon the DIP SW selection, the changes from O volt to +5 volts. (See the following table.) registration solenoid turns on to lower the registration plate.

  • Page 116: Replacement Of Parts

    May, 25, 1985 6. Replacement of Parts – Paper Feed Solenoid – Paper Feed Clutch Feed Solenoid Paper Paper Feed Solenoid Paper Feed Clutch’ Open the upper clamshell and remove the development unit. Remove the front inner cover (2 screws). Disconnect the 2P connector.

  • Page 117: Registration Solenoid

    25, 1985 May, – Registration Solenoid – Upper Guide r Cover Plate Front Open the upper clamshell and remove the development unit and cassette. Remove the front inner cover (2 screws). Remove the development lower cover (2 screws). Remove the upper guide. Remove the lower guide plate (4 screws).

  • Page 118: Paper Feed Sensor

    May, 25, 1985 – Paper Feed Sensor — ---- Feed Sensor 1. Follow steps 1 through 5 of Registration Solenoid Replacement. (See page 3-59.) 2. Disconnect the 2P connector on the interface board. 3. Remove the paper feed sensor (1 screw). 3 - 6 0...

  • Page 119: Adjustment Of Parts

    25, 1985 May, 7. Adjustment of Parts — Leading Edge Registration – .-.’ DIP SW DIP SW TABLE Ruler Lay a ruler on the exposure glass as shown in the figure. Make a few copies and check that the leading edge registration is within standard. Leading Edge Registration Standard: If it is out of the standard, adjust it using DIP SW No.

  • Page 120: Lubrication Of Parts

    May, 25, 1985 8. Lubrication of Parts – Paper Feed Spring Clutch – Inner Cover Input 3 - 6 2...

  • Page 121: Transport

    May, 25, 1985 TRANSPORT Transport Belt , Guide Plate Belt Drive Transfer Corona Wire Main Motor The transport belt is only used After image transfer, paper is fed by the relay roller to the fusing unit. cards). for small-sized paper (such as business The transport belt continuously turns when the main motor is on.

  • Page 122: Image Fusing

    25, 1985 May, IMAGE FUSING 1. Introduction paper with the transferred image on it is carried from the image transfer section to the fusing Copy By applying heat and pressure, the fusing Paper then passes unit. between the fusing rollers. rollers (the hot roller and the pressure roller) fuse the toner image to the paper.

  • Page 123: Drive Mechanism

    25, 1985 May, 2. Drive Mechanism .“ The fusing unit is driven by the main motor through a series of gears. The pressure roller is friction driven by the hot roller. Rotating the paper reverse knob counterclockwise removes jammed paper from the fusing unit.

  • Page 124: Fusing Control

    May, 25, 1985 3. Fusing Control TH Temp 115° C Ready Room Temp. After the TH senses 160 degrees Celsius, the enable signal changes to a switching signal. The fus- This decreases the rate of heat application and ing lamp switches on 125 ms and then off 500 ms. prevents excessive over shoot.
  • Page 125 May, 25, 1985 The switching signal is turned on (switching power) when the TH detects a temperature less than 182 degrees Celsius and is turned off again when TH detects 185 degrees Celsius. The only exception is At that time, if the hot roller is less than 185 degrees Celsius, the when the main motor turns on.

  • Page 126: Fusing Lamp Control Circuit

    25, 1985 May, 4. Fusing Lamp Control Circuit The circuit has both ac and de components, Above is a schematic of the fusing lamp control circuit. which are coupled through a photocoupler. The following discussion centers on circuit operation from the viewpoint of the signals that can be observed between the main board and the ac drive board.
  • Page 127 May, 25, 1985 — Hardware Overheat Protection — In case the software overheat protection fails, a thermoswitch is installed in series with the fusing 245 degrees Celsius, the thermoswitch opens. lamp. If the thermoswitch temperature reaches .- . – Service Call Conditions – Thermistor Circuit Open: If the temperature detected through the TH does not reach 2 degrees Celsius (300 kilo-ohm) within...
  • Page 128 May, 25, 1985 Replacement of Parts 1. Remove the copy tray. Remove the rear cover (2 screws). Remove the front cover. (See page 3-79.) Open the upper clamshell and stand it straight. CAUTION: Place a block in front of the exit cover. (See page 3-80.) Open the exit cover and remove the fusing unit cover (2 screws).

  • Page 129: Hot Roller

    May, 25, 1985 – Hot Roller – 1. Follow steps 1 through 4 of the fusing lamp replacement. (See page 3-70.) 2. Open the exit cover and remove the fusing unit cover (2 screws). 3. Remove the top frame (2 screws). 4.

  • Page 130: Pressure Roller

    25, 1985 May, – Pressure Roller – .-. ” Pressure Roller 8 of the 1. Follow steps 1 through Hot Roller Replacement. (See 3-71.) page 2. Remove the fusing lower guide (3 screws). Remove the pressure roller gear (1 E-ring). 4.

  • Page 131: Hot Roller Strippers

    May, 25, 1985 — Hot Roller Strippers — 1. Remove the copy tray. 2. Remove the exit cover (2 screws). 3. Lower the exit assembly. 4. Unhook the pressure springs. 5. Remove the stripper pawls. NOTE: Do not damage the hot roller or stripper pawls. 3 - 7 3...

  • Page 132: Fusing Thermoswitch

    25, 1985 May, – Fusing Thermoswitch – Follow steps 1 through 4 of Fusing Lamp Replacement. (See page 3-70.) Open the exit cover and remove the fusing unit cover (2screws). Take off the top frame (2screws). Remove the thermoswitch (2screws). careful not to damage the pressure and hot rollers.

  • Page 133: Other Mechanical And Electrical Components

    May, 25, 1985 OTHER MECHANICAL A ND ELECTRICAL COMPONENTS 1. Safety Switch The safety switch is installed in series with and prior to the main switch. When this switch turns off, it cuts ac power, turning off all electrical components in the copier. This safety switch is on only if both the front and rear sides of the safety switch lever are pressed down.

  • Page 134: Pulse Generator

    May, 25, 1985 2. Pulse Generator Timing Belt The copier’s CPU controls the timing of all machine operations based on how many pulses it has received from the pulse generator. Pulses are generated by the rotation of a perforated disk within a photocoupler.

  • Page 135: Jam Sensing

    May, 25, 1985 3. Jam Sensing Paper Feed Sensor Exit Sensor The paper feed sensor and the exit sensor monitor the movement of the copy through the paper path. If the CPU determines that a jam condition exits, it displays either the Check Paper Path or Check Cassette indicator depending on the location of the jam.

  • Page 136: Indicator Board

    May, 25, 1985 4. Indicator Board J - 9 J - 5 J - 4 — The LEDs are energized by clock pulses from the elements. This copier uses only LEDs for display CPU. light any particular LED, the CPU drops the appropriate control line to O volt at the same time that This operation is illustrated below.

  • Page 137: Replacement Of Parts

    May, 25, 1985 5. Replacement of Parts – Exterior Parts – Slider 1. Front Cover Remove 4 screws. To get at the top screws, move the slider left and right. NOTE: After installing the front cover, the edge of exposure glass must be in the groove of the front cover.
  • Page 138 May, 25, 1985 Torsion Bar Remove the front and rear covers. (See page 3-79.) a block in front of the exit cover. Place NOTE: This block must have a height of approximately 50 mm (2”). Raise the upper clamshell part way and the hinge.

  • Page 139: Ozone Filter

    May, 25, 1985 – Ozone Filter – Toner Overflow Sensor 1. Open the upper clamshell and remove the master unit. (Avoid exposing the master unit to light.) 2. Remove the copy tray and the two stud screws, then stand the upper clamshell straight up.

  • Page 140: Main Motor

    25, 1985 May, — Main Motor – AC Power Supply Board 2P Connector Main Motor Capacitor T i m i n g B e l t “ (See 1. Remove the rear cover. page 3-79.) 2. Remove the master unit. 3.

  • Page 141: Pulse Generator

    May, 25, 1985 — Pulse Generator — Slider Clutch Bracket Pulse Generator Bracket 1. Remove the rear cover. (See page 3-79.) 2. Disconnect the pulse generator connector. 3. Remove the pulse generator bracket (1 screw). 4 Remove the pulse generator sensor (1 screw). 3 - 8 3...

  • Page 142: Main Board

    25, 1985 May, – Main Board – 1. Remove the front cover. (See page 3-79.) 2. Disconnect all 4 connectors from the main board. 3. Remove the main board assembly (3 screws). 3 - 8 4...

  • Page 143: Dc Power Supply Board

    May, 25, 1985 – Dc Power Supply Board – Supply Board 1. Follow steps 1 through 3 of Transfer Corona Nylon Wire Replacement. (See page 3-44.) 2. Remove the front inner cover (2 screws). 3. Swing open the transfer unit. 4.
  • Page 144 May, 25, 1985 – Transfer Guide Plate – 1. Follow steps 1 through 5 of Transfer Corona Nylon Wire Replacement. (See page 3-44.) 2. Remove the mylar from the guide plate. 3. Stick a new mylar guide as shown in the figure. 3 - 8 7...

  • Page 145: Remarks

    SECTION 4 SERVICE REMARKS...
  • Page 146 May, 25, 1985 General Place a block in front of the exit cover before removing the two stopper screws on the clamshell hinge. The upright clamshell needs to rest on a block with a height of approximately 50 mm (2”) to prevent damage to the baseplate. (See page 3-80.) Do not insert anything in the safety switch slot when the upper clamshell is open.
  • Page 147 May, 25, 1985 Installation When only one toner cartridge is used at machine installation, the Add Toner indicator lights after To prevent customer dissatisfaction, make sure that customers use two toner about 200 copies. cartridges to fill the toner-tank at initial set-up. M a s t e r Dispose of used master units in a plastic bag according to local regulations (as plastic material).
  • Page 148 May, 25, 1985 Fusing 1. Be careful not to damage the edge of the strippers or their springs. 2. Make sure both ends of the fusing lamp are properly set on the terminals. Paper Feed Do not allow the pick-up roller, turn rollers, feed rollers, or relay rollers to become oily or dirty Operator Instruction 1.
  • Page 149 May, 25, 1985 4. Master Unit: Instruct the operator on how to install a new master unit. Avoid exposing the master unit to light or heat. 5. Toner Cartridge Instruct the customer on how to install the toner cartridge. Instruct the customer to peel off the seal with the crank. (Peel off the seal completely.) 4 - 4...

  • Page 150: Service Tables

    SECTION 5 SERVICE TABLES 1. Maintenance Guide ..........5-1 2.
  • Page 157 SECTION 6 TROUBLESHOOTING 1. Mechanical ............6-1 2.

  • Page 168: Parts Catalog

    RICOH M50 PARTS CATALOG RICOH COMPANY, LTD. First Edition May 1992...
  • Page 169 PARTS CATALOG INTRODUCTION This chapter instructs you the numbers and names of these parts on this machine. INDEX to PARTS CATALOG 1. EXTERIOR (A094) ................2 10. MAIN BOARD (A094) ................ 21 2. OPTICS SECTION (A094) ..............4 11. POWER SUPPLY BOARD (A094) ............23 3.

  • Page 170: Exterior (A094)

    1. EXTERIOR (A094)
  • Page 171 1. EXTERIOR (A094) Index Q'ty per Index Q'ty per Part No. Description Part No. Description Assembly Assembly A094 1431 Rear Cover - 220/240V 0353 0060F Philips Truss Head Screw - M3x6 5214 7182 Praten Cover 0413 0100F Philips Truss Head Screw - M3x10 Not Used 0965 4010W Tapping Screw with Flat Washer - M4x10 5214 1551...

  • Page 172: Optics Section (A094)

    2. OPTICS SECTION (A094)
  • Page 173 2. OPTICS SECTION (A094) Index Q'ty per Index Q'ty per Part No. Description Part No. Description Assembly Assembly A094 1991 Slider Cover 5214 9001 Corona Wire - 10pcs/Set A094 1921 Slider Rack Angle 5214 2072 Rear End Cover - Charge 5214 1971 Slid Rail 5214 2060...

  • Page 174: Paper Feed Section (A094)

    3. PAPER FEED SECTION (A094)
  • Page 175 A094 1246 Front Side Plate - Paper Feed 0951 3006W Philips Screw With Flat Washer - M3x6 5214 2571 Gear - 16T 0965 4012W Philips Pan Head Screw - M4x12 5214 2563 Gear - 38T 0720 0050E Retaining Ring - M5...

  • Page 176: Development Unit - Black (A094)

    4. DEVELOPMENT UNIT - BLACK (A094)
  • Page 177 5214 3102 Gear - 20T 0443 0082W Hexagon Head Tapping Screw - M3x8 5214 3100 Gear - 24T 0701 0050B Flat Washer - M5 5214 3105 Spring - Toner End Lever 0720 0040E Retaining Ring - M4 5214 3130 Toner End Lever...

  • Page 178: Development Unit - Color (A094)

    5. DEVELOPMENT UNIT - COLOR (A094)
  • Page 179 5. DEVELOPMENT UNIT - COLOR (A094) Index Q'ty per Index Q'ty per Part No. Description Part No. Description Assembly Assembly 5214 3152 Rear Development Cover 1030313 0060M Philips Pan Head Screw - M3x6 5921 3111 Gear - 16T 0313 0060W Philips Pan Head Screw - M3x6 5203 3124 Coupled Gear - 12T/22T 0443 0060W Hexagon Head Tapping Screw - M3x6...

  • Page 180: Fusing Section (A094)

    6. FUSING SECTION (A094)
  • Page 181 6. FUSING SECTION (A094) Index Q'ty per Index Q'ty per Part No. Description Part No. Description Assembly Assembly A094 4207 Fusing Cover - 220/240V 5447 2769 Stepped Screw A094 5316 Rear Fusing Harness A094 4087 Lower Exit Guide A094 5315 Front Fusing Harness 5214 4127 Exit Roller...
  • Page 182 Index Q'ty per Index Q'ty per Part No. Description Part No. Description Assembly Assembly 0313 0060M Philips Pan Head Screw - M3x6 0313 0120W Philips Pan Head Screw - M3x12 0443 0060W Hexagon Head Tapping Screw - M3x6 0443 0080W Hexagon Head Tapping Screw - M3x8 0720 0030E Retaining Ring - M3 0720 0040E Retaining Ring - M4 0720 0060E Retaining Ring - M6...

  • Page 183: Drive Section (A094)

    7. DRIVE SECTION (A094)
  • Page 184 7. DRIVE SECTION (A094) Index Q'ty per Index Q'ty per Part No. Description Part No. Description Assembly Assembly 5214 5820 Holder - AC Drive Board Not Used A094 5615 AC Drive Board Ass’y 5203 1828 Bevel Gear - 36T (Return) A094 5605 Main Motor - AC 220V 11W 5203 1831...

  • Page 185: Upper Unit (A094)

    8. UPPER UNIT (A094)
  • Page 186 8. UPPER UNIT (A094) Index Q'ty per Index Q'ty per Part No. Description Part No. Description Assembly Assembly 5214 1120 Rear Hinge - Top Unit 0443 0060W Hexagon Head Tapping Screw - M3x6 5214 5810 Spacer - Toner End Sensor 0443 0120W Hexagon Head Tapping Screw - M3x12 A094 5231 Photocoupler...

  • Page 187: Lower Unit (A094)

    9. LOWER UNIT (A094)
  • Page 188 9. LOWER UNIT (A094) Index Q'ty per Index Q'ty per Part No. Description Part No. Description Assembly Assembly 5214 5842 Safety Switch Lever 0313 0600W Philips Pan Head Screw - M3x6 A094 5640 AC Power Supply Board Ass’y - 220/240V 0314 0060M Philips Pan Head Screw - M4x6 A094 5637 Receptacle - 220/240V...

  • Page 189: Main Board (A094)

    10. MAIN BOARD (A094)
  • Page 190 10. MAIN BOARD (A094) Index Q'ty per Index Q'ty per Part No. Description Part No. Description Assembly Assembly 5214 5151 Main Board 1407 0975 IC - HD7407P 5214 5153 CPU - Main Board 1407 1091 IC - HD74LS02P 1400 0328 Transistor - 2SA720 1401 0631 Diode - 1S2075K...

  • Page 191: Power Supply Board (A094)

    11. POWER SUPPLY BOARD (A094)
  • Page 192 11. POWER SUPPLY BOARD (A094) Index Q'ty per Index Q'ty per Part No. Description Part No. Description Assembly Assembly 5214 5100 Power Supply Board Ass’y 1607 0097 Choke - 300mH, 2A 1408 0402 IC - STR2024 1408 0331 IC - MPC7805H 1405 0150 Rectifier - DBA20B 1402 0467...

  • Page 193: Ac Drive Board (A094)

    12. AC DRIVE BOARD (A094)
  • Page 194 12. AC DRIVE BOARD (A094) Index Q'ty per Index Q'ty per Part No. Description Part No. Description Assembly Assembly 5214 5415 AC Drive Board Ass’y - 115V 1405 0160 Photo Thyristor 5214 5615 AC Drive Board Ass’y - 220/240V 1405 0161 Photo Thyristor - 220/240V 1400 0345 Transistor - 2SC3330...

  • Page 195: Interface Board (A094)

    13. INTERFACE BOARD (A094)
  • Page 196 13. INTERFACE BOARD (A094) Index Q'ty per Index Q'ty per Part No. Description Part No. Description Assembly Assembly 5214 5120 Interface Board 1402 0467 Diode - S5566G 1103 1771 Connector - 5P 1103 1797 Connector - 3P 1103 1782 Connector - 2P 1103 1796 Connector - 2P 1103 1783...

  • Page 197: Upper Unit Harness - Rear (A094)

    14. UPPER UNIT HARNESS - REAR (A094)
  • Page 198 14. UPPER UNIT HARNESS - REAR (A094) Index Q'ty per Index Q'ty per Part No. Description Part No. Description Assembly Assembly 5214 5399 Upper Unit Harness - Rear 1102 1994 Socket Housing - 14P 1100 1329 Contact 1102 1983 Connector - 3P 1100 1329 Contact 1102 1984...

  • Page 199: Upper Unit Harness - Front (A094)

    15. UPPER UNIT HARNESS - FRONT (A094)
  • Page 200 15. UPPER UNIT HARNESS - FRONT (A094) Index Q'ty per Index Q'ty per Part No. Description Part No. Description Assembly Assembly 5214 5301 Upper Unit Harness - Front 1102 2008 Socket Housing - 14P 1100 1329 Contact 1102 1983 Connector - 3P 1100 1329 Contact 1102 1982...

  • Page 201: Ac Harness (A094)

    16. AC HARNESS (A094)
  • Page 202 16. AC HARNESS (A094) Index Q'ty per Index Q'ty per Part No. Description Part No. Description Assembly Assembly 5214 5310 AC Harness 1102 1404 Connector - 1P 1100 1171 Fastening Receptacle 1102 0717 Terminal Insulator 1100 1117 Fastening Receptacle 1102 0717 Terminal Insulator 1100 0822 Fasten Receptacle With Tab...

  • Page 203: Special Tool (A094)

    17. SPECIAL TOOL (A094)
  • Page 204 17. SPECIAL TOOL (A094) Index Q'ty per Index Q'ty per Part No. Description Part No. Description Assembly Assembly 5214 9500 Test Chart OS-A4 (10 Pcs/Set) 5214 9501 Test Chart OS-A4 (100 Pcs/Set) 5447 9078 Heat Resisting Grease MT-78 5420 9507 Digital Multimeter - Beckman 5420 9508 Test Lead Kit...

  • Page 205: Parts Index

    PARTS INDEX...
  • Page 206 Paper and Paper and Part No. Part No. Description Description Index No. Index No. A094 4179 Lamp Holder Spring 13- 48 A094 0025 Power Supply Cord - 220V 19-150 A094 4207 Fusing Cover - 220/240V 13- 1 A094 1121 Left Cover 5- 8 A094 4411 Pressure Roller...
  • Page 207 Paper and Paper and Paper and Paper and Part No. Part No. Part No. Part No. Description Description Description Description Index No. Index No. Index No. Index No. AA11 3028 Front Outer Insulator 13- 50 5214 1118 Front Hinge - Top Unit 17- 20 AD03 0030 Development Roller...
  • Page 208 Paper and Paper and Part No. Part No. Description Description Index No. Index No. 5214 1856 Idle Gear - 22T 15- 22 5214 2556 Paper Feed Clutch 7- 36 5214 1857 Belt Drive Shaft 15- 18 5214 2563 Gear - 38T 7- 35 5214 1858 Coupling Cover...
  • Page 209 Paper and Paper and Part No. Part No. Description Description Index No. Index No. 5214 3103 Gear - 18T 9- 2 5214 4104 Fusing Unit Mylar 13- 57 5214 3104 Toner Supply Shaft 9- 15 5214 4107 Bushing - 20x28x8mm 13- 11 5214 3105 Spring - Toner End Lever...
  • Page 210 Paper and Paper and Part No. Part No. Description Description Index No. Index No. 5214 5235 Paper Feed Sensor 7- 20 5214 7804 Rear End Cover - Transfer 7- 16 5214 5238 Micro Switch - Scan 15- 5 5214 9001 Corona Wire - 10pcs/Set 5- 36 5214 5260...
  • Page 211 7-106 0720 0040E Retaining Ring - M4 15-126 0313 0120W Philips Pan Head Screw - M3x12 13-106 0720 0050E Retaining Ring - M5 7-151 0313 0250W Philips Pan Head Screw - M3x25 7-107 0720 0060E Retaining Ring - M6 7-127...
  • Page 212 Paper and Paper and Part No. Part No. Description Description Index No. Index No. 0965 4012W Philips Pan Head Screw - M4x12 17-141 1103 1446 Wafer - 2P 25- 17 0965 4012W Philips Pan Head Screw - M4x12 19-141 1103 1768 Connector - 2P 27- 8 1100 0280...
  • Page 213 Paper and Paper and Part No. Part No. Description Description Index No. Index No. 1405 0150 Rectifier - DBA20B 23- 4 1607 0097 Choke - 300mH, 2A 23- 1 Resistor - 100 Ω 1/4T ±5% 1405 0153 Triac - TG16C40 13-149 1611 4101 23- 20...

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