Ricoh FT4430 Service Manual

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RICOH FT4430

S E R V I C E

M A N U A L

RICOH COMPANY, LTD.

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Summary of Contents for Ricoh FT4430

Page 1 RICOH FT4430 S E R V I C E M A N U A L RICOH COMPANY, LTD.
Page 2 SECTION 1 OVERALL MACHINE INFORMATION...
Page 3 Table of Contents SPECIFICATIONS . . OPERATION PANEL SECTION A ..SECTION B ..
Page 4 16 April ’88 SPECIFICATIONS Configuration: Desk top Dry electrostatic transfer system Copying Process: Sheet/book Original: Maximum A3 (11“ x 17”) Original Size: Maximum A3 (11“ x 17”) Copy Paper Size: Minimum A6 (51/2" x 81/2”) Cassette feed 52 to 128 g/m lb to Copy Paper Weight: Manual feed...
Page 5 16 April ’88 The copy speed (in copies per minute) is shown Copying Speed: in the following tables: A4 Version A4R B5R Letter Version LT(R) When used with document feeder, A4 (LT) speed is 17 cpm (sideways). First-Copy Time: 6.0 seconds (A4 or x 11”) 81/2”...
Page 6 16 April ’88 - Double universal cassette feed, 250 sheets each Paper Feed: (auto cassette shift) - Manual feed table - Optional large capacity tray (LCT) at second feed station. Paper-Feed System: Friction-pad system Exposure System: Slit exposure, moving optics Lens: Through lens, F8, f = 180mm Light Source:...
Page 7 16 April ’88 Electronic Control 8-bit microprocessor System: 250 sheets (B4 / 10” x 14”) Copy Tray Capacity: 100 sheets (A3 / 11” x 17“) Self-diagnostics: 19 codes, displayed in the copy counter Power Source: 110V/60Hz..15A 115V/60Hz..15A 220V/50Hz..8A 220V/60Hz..8A 240V/50HZ..8A Power Consumption: Warm-up: 1.0 kW...
Page 8 16 April ’88 OPERATION PANEL (A4/A3 Version) SECTION A 1. Sort Indicator 9. Copy Image Size Indicator 2. Stack Indicator 10. Zoom Keys 3. Auto Reduce/Enlarge Indicator 11. Size Magnification Key Paper Select Indicator 4. Auto 12. Margin Adjustment Key 5.2 Single Copies Indicator Single Copies Key 13.2...
Page 9 16 April ’88 SECTION B Version) 1. (LT/LDG (A4/A3 Version) < Auto Image Density Key Manual Image Density Key Manual Image Density Indicator Color Toner Indicator Misfeed Location Display Select Cassette Key Paper Size Indicator 13 , Full Size Key Full Size Indicator Magnification Ratio Indicator Enlarge Key...
Page 10 16 April ’88 (LT/LDG Version) (A4/A3 Version) 1. Number Keys 5. Clear Modes Key 2. Recall/Enter Key 6. Start Key 3. Interrupt Indicator 7. Clear/Stop Key 4. Interrupt Key...
Page 13: Paper Path
16 April ’88 PAPER PATH Paper feed starts from one of the two paper feed stations. The path followed depends on which cassette the operator has selected. For copy processing, all sheets follow the same path from the paper feed mechanism through the fusing unit.
Page 14 16 April ’88 2. Registration At the programmed time, the registration rollers start turning to feed the paper to the drum. Image Transfer The toner image on the drum surface is pulled from the drum onto the passing paper by the transfer corona. 4.
Page 15 16 April ’88 MECHANICAL COMPONENT LAYOUT Development Unit First Feed Roller First Cassette Second Feed Roller Pick-up Roller (LCT) Registration Roller Quenching Lamp 19 . Pre-Transfer Lamp (PTL) /lmaqe Main Corona Unit Density Sensor Board Erase Lamp Unit 20. Transfer/Separation Corona Unit Toner Shield Glass 21.
Page 16: Drive Layout
16 April ’88 DRIVE LAYOUT Wire Pulleys Gears WP1 Scanner Drive Pulley Second Feed Clutch Gear WP2 Second Scanner Drive Pulley Pick-up Roller Drive Gear(LCT) First Feed Clutch Gear Timing Belt Toner Supply Clutch Gear Hot Roller Drive Gear Exit Roller Drive Gear TB1 Drum Drive Belt Belt Sprockets...
Page 17 16 April ’88 ELECTRICAL COMPONENT LAYOUT 1-14...
Page 18 16 April ’88 1. Main Motor - Ml 27. Lamp Regulator PCB - PCB1 2. Lens Drive Motor - M2 28. Second Scanner Home Position 3. Lens HP Sensor - S1 Sensor - S12 4. Quenching Lamp - L1 29. Total Counter - CO1 5.
Page 19: Electrical Component Descriptions
16 April ’88 ELECTRICAL COMPONENT DESCRIPTIONS SYMBOL NAME FUNCTION LOCATION Motors Main Motor Drives all main unit components except otics unit and fans/bIowers. (100Vac) Lens Drive Motor Positions the lens. (dc stepper) Vacuum Fan Motor Provides suction so that paper is held firmly on the transport belt.
Page 20: Printed Circuit Boards
16 April ’88 LOCATION SYMBOL NAME FUNCTION Detects when it is time to add toner. Color Toner End Sensor Manual Feed Sensor Detects when the manual feed table is open. Color Toner Sensors Detects which color toner development unit is installed. First Paper End Informs the CPU when the first cassette runs out of paper.
Page 21 16 April ’88 LOCATION FUNCTION NAME SYMBOL Provides heat to the fusing unit. Fusing Lamp Power Packs Provides dc voltage for the transfer Power Pack - T/S and provides ac and dc voltage for separation coronas. Provides high voltage power for the Power Pack - C/B charge corona and the development roller bias.
Page 22: Ac And Dc Power Distribution
16 April ’88 AC AND DC POWER DISTRIBUTION The ac power supply is filtered then distributed to the fusing lamp and the main transformer. The transformer supplies 100 volts to the cooling fan, vacuum fan, and the main motor. The”dc power supply unit receives ac 26, 16, and 10 volts, via fuses, from the main transformer.
Page 23: Overall Machine Control
16 April ’88 OVERALL MACHINE CONTROL The base copier has two CPUs on the main board that control all machine operations (the main CPU and the optics CPU). The main CPU is the main controller of this copier. It monitors the input signals from sensors and controls the electrical devices through program mable 1/0 devices.
Page 24 16 April ’88 OPERATION PANEL CONTROL The CPU controls all functions of the operation panel. The CPU sends data to programmable 1/0 devices which form a multiplexing circuit consisting of 8 scan lines and 17 segment lines, Transistors drive all the scan lines at 12 volts to reduce effects from noise.
Page 25 SECTION 2 DETAILED SECTION DESCRIPTIONS...
Page 26: Table Of Contents
OVERVIEW ..........: ..2-6 LEAD EDGE ERASE .
Page 27 COLOR DEVELOPMENT ..........2-33 I.
Page 28: Selenium Drum
16 April ’88 DRUM SELENIUM DRUM Selenium has the characteristics of: Being able to accept a high positive electrical charge in the dark. (The electrical resistance of selenium is high in the absence of light.) Dissipating the electrical charge when exposed to light. (The conductivity of selenium is greatly enhanced by exposure to light.) Dissipating an amount of charge in direct proportion to the intensity of the light.
Page 29 16 April ’88 HANDLING THE DRUM Never touch the drum surface with bare hands. Store the drum in a CooI dry place away from heat. When cleaning the drum, always wear gloves. Prime the drum with setting powder only when installing a new drum. Never expose the drum to light for long periods.
Page 30: Overview
16 April ’88 DRUM CHARGE OVERVIEW This copier uses a dual wire corotron [A] and a highly sensitive selenium drum. The corona wires generate a corona of positive ions when the charge power pack [P2] applies a high positive voltage. The selenium coating receives a uniform positive charge (750 t 50 volts) as it rotates past corona unit [B].
Page 31 16 April ’88 CORONA WIRE CLEANER The flow of air around the charge corona wires [A] may deposit paper dust or toner particles on the corona wires. These particles may interfere with charging and cause low density bands on copies. The wire cleaner [B] allows the operator to correct this problem by simply pulling out and pushing in the corona unit.
Page 32: Charge Corona Power Pack
16April ’88 CHARGE CORONA POWER PACK The circuit operation for the charge corona [A] begins with the input of +24 volts to the power pack at CN1-1. This power supply is used for the high voltage coronas. The charge corona turns on 0.42 second after the Start key is pressed. A LOW signal from the main board (at CN206-A22) energizes the power pack.
Page 33 16 April ’88 ERASE OVERVIEW Lead Edge Erase Margin Side Margins -- size copies, the total of both side margins is less than mm. ) Original Image width Charged width on the Drum Lead Edge Erase Side Erase The erase lamp [A] consists of a line of LEDs extending across the full width of the drum [B].
Page 34: Lead Edge Erase
LEAD EDGE ERASE The entire line of LEDs turns on when the main motor turns on. They stay on until the erase margin slightly overlaps the lead edge of original image area on the drum (Lead Edge Erase Margin). This prevents the toner density sensor pattern from being developed on every copy cycle and prevents the edge of the original from appearing on the copy image.
Page 35: Side Erase Operation
16 April ’88 Side Erase Operation The tables below show which erase lamps turn off, size and reproduction ratio selected. Note that A3 side edge erase occurs because the charge corona end block covers stop the edges of the drum from receiving charge.
Page 36: Trail Edge Erase
16 April ’88 TRAIL EDGE ERASE Normally, the erase lamps turn on after the trailing edge of the latent image has passed. Therefore, a trail edge erase margin cannot be observed on the copy. Trail edge erase ON timing is the same as charge corona OFF timing. During enlargement or reduction, the trail erase ON timing changes according to the paper size and the reproduction ratio.
Page 37: Erase Lamp Circuit
16 April ’88 ERASE LAMP CIRCUIT This copier uses 34 LEDs in the erase lamp unit. Shift register drivers control the LEDs. Initially, the RESET signal (LOW active) turns off all the shift registers. Then the main board sends erase lamp data to the shift registers from CN203-15.
Page 38 16 April ’88 After the RESET signal goes back to HIGH, the shift registers start accepting data. If the data line is HIGH at the time of the CLOCK pulse (rising edge), the shift register is set to turn the LED on; if it is LOW, the the shift register is set to keep the LED off.
Page 39: Optics
April ’88 OPTICS of the original During the copy cycle, an image follows. surface via the optics assembly as Light Path: Exposure Lamp [A] --> Original [B] --> First Mirror [C] --> Lens [F] --> Second Mirror [D] --> Third Mirror [E] --> Fourth Mirror [G] -->...
Page 40: Scanner Drive
16 April ’88 SCANNER DRIVE 1. Scanner Drive Mechanism This model uses a dc servomotor [A] to drive the scanners. The first scanner [B], which consists of the exposure lamp [C] and the first mirror, is connected to the scanner drive wire by the wire clamp [D]. T h e second scanner [E], which consists of the second and third mirrors, is connected to the scanner drive wire by a movable pulley (the second scanner pulley [F]).
Page 41 16 April ’88 SCANNER DRIVE 1. Scanner Drive Mechanism This model uses a dc servomotor [A] to drive the scanners. The first scanner [B], which consists of the exposure lamp [C] and the first mirror, is connected to the scanner drive wire by the wire clamp [D]. T h e second scanner [E], which consists of the second and third mirrors, is connected to the scanner drive wire by a movable pulley (the second scanner pulley [F]).
Page 42: Scanner Motor Control
16 April ’88 2. Scanner Motor Control The scanner drive motor [M6] is a servomotor, The optics CPU on the main board [PCB6] controls the speed of this servomotor. The main CPU and the optics CPU communicate through a serial interface bus. At the programmed time, the main CPU sends a scanner start signal to the optics CPU.
Page 43: Lens/Mirrorpositioning
16 April ’88 LENS/MIRROR POSITIONING [ B ] [M2] [ A ] 1. Lens Drive The lens drive motor [M2] (stepper motor) changes the lens [A] position in accordance with the selected reproduction ratio to provide the proper optical distance between the lens and the drum surface. The lens drive motor drives the entire lens unit through an idle gear [B].
Page 44 16 April ’88 2. Scanner Motor Control The scanner drive motor [M6] is a servomotor, The optics CPU on the main board [PCB6] controls the speed of this servomotor. The main CPU and the optics CPU communicate through a serial interface bus. At the programmed time, the main CPU sends a scanner start signal to the optics CPU.
Page 45: Lens Positioning
16 April ’88 2. Lens Positioning [Enlargement] The lens home position sensor [S1] informs the optics CPU when the lens is at the full size position (home position). The optics PCB determines the lens stop position in reduction and enlarge modes by counting the number of steps the motor makes with reference to the lens home position.
Page 46: Second Scanner Drive
16 April ’88 3. Second Scanner Drive To provide the proper optical distance between the original and the lens, this model uses a stepper motor [A] to move the second scanner. A separate motor is used because the second scanner must travel a long distance to accommodate the wide range of reproduction ratios.
Page 47: Second Scanner Positioning
16 April ’88 4. Second Scanner Positioning Like the lens, the second scanner is positioned by counting the number of steps from the home position. Second scanner home position is determined by a HIGH to LOW to HIGH change at CN101-B4 of the main board. Actually, as this machine has horizontal magnification adjustment by changing the position of 2nd scanner drive pulley using SP Mode # 44, the home position may be detected when the signal goes from HIGH to LOW by...
Page 48: Stepper Motor Control
16 April ’88 STEPPER MOTOR CONTROL [M5] are Both the lens drive stepper motors. The stators of these stepper motors have four coils (labeled A, B, A and B above), and the rotors are permanent magnets. Pulse signals energize the four coils as shown in the above illustration. The rotor turns in discrete steps.
Page 49: Automatic Image Density Sensing
16 April ’88 AUTOMATIC IMAGE DENSITY SENSING Leading Edge of the Original The input for the automatic image density circuit is via a fiber optic cable [A] that is “mounted on the first scanner. Light from the exposure lamp [B] passes through a small hole in the reflector, reflects from the original, and is collected by the fiber optic cable.
Page 50: Exposure Lamp Control
16 April ’88 EXPOSURE LAMP CONTROL Lamp ON/OFF [PCB4] The lamp regulator board controls the exposure lamp. The voltage applied to the exposure lamp is determined by the combination of HIGH and LOW signals at CN204-6, -7, and -8. The main CPU sends the lamp trigger signal 0.13 seconds after the registration clutch turns off.
Page 51: Service Call Conditions
16 April ’88 Service Call Conditions Self Diagnostic Code 11: Exposure Lamp Malfunction Code 11 is displayed if the lamp monitor voltage is detected during standby (lamp ON), or if the lamp filament opens. Self Diagnostic Code 21: Home Position canner Check Code 21 is displayed if the scanner home position sensor stays deactivated...
Page 52: Development
16 April ’88 DEVELOPMENT Overview When the main motor turns on, the paddle roller [A] and development roller [B] start turning. The paddle roller picks up developer in its paddles and transports it to the development roller. Internal permanent magnets in the development roller attract the developer to the development roller sleeve.
Page 53: Seals And End Magnets
16 April ’88 SEALS AND END MAGNETS [ A ] Several seals prevent toner from spilling out into the copier. The upper brush seal [A] prevents particles from scattering upward. The side seals [B] at the ends of the development unit contact the drum-ends (out of the image area); they prevent toner from scattering out of the sides.
Page 54: Cross-Mixing
16 April ’88 CROSS-MIXING This copier uses a standard cross-mixing mechanism to keep the toner and developer evenly mixed. It also helps agitate the developer to prevent developer clumps from forming and helps create the triboelectric charge. The developer on the turning development roller is split into two parts by the doctor blade [A].
Page 55: Image Density Control
16 April ’88 IMAGE DENSITY CONTROL bias Image density is controlled by changing two items: (1) the strength of the voltage applied to the development roller sleeve, and (2) the strength of the voltage applied to the exposure lamp. Applying a bias voltage to the development sleeve reduces the potential between the development roller and the drum, thereby reducing the amount of toner transferred.
Page 56: Automatic Image Density Control
16 April ’88 2. Automatic Image Density Control ‘ Development Bias Voltage (V) When automatic image density control is on, the exposure lamp voltage is set to Vo + 5 volts. A change in the bias voltage only controls the image ‘density. The normal factory setting is the fourth column;...
Page 57: Bias Compensation Factors
16 April ’88 3. Bias Compensation Factors As discussed previously, either the automatic image density system or the operator, through the image density keys, sets the bias base level (V1). The CPU increases the bias base level as necessary to compensate for the rest time between copy runs and the drum temperature, both of which affect drum T D : D r u m T e m p e r a t u r e 4.
Page 58: Drum Temperature Compensation (V3)
16 April ’88 5. Drum Temperature Compensation (V3) (v) , Temp TH Resistance monitors drum temperature through a thermistor (TH-2), and it The CPU increases or decreases the bias voltage to compensate for variations in drum sensitivity that are induced by temperature changes in the drum cavity. The temperature compensation is effective from 5 degrees to 50 degrees (Celsius).
Page 59: Bias For Id Sensing
16 April ’88 BIAS FOR ID SENSING Bias change Signal ( from Optics Board) Scanner Bias for ID Sens’or Pattern for ‘Image ( Fixed Bias) ( S e l e c t e d B i a s ) 6 0 0 Drum Temp = 30”C for Image Rest Time = Over 2hours...
Page 60: Color Development
16 April ’88 COLOR DEVELOPMENT 1. Overview This copier has mono-color copying capability in red, green, and blue as well as standard black. To change colors, the development unit must be replaced. To detect which color is used, an actuator is mounted on the development unit.
Page 61: Color Detection
16 April ’88 The ID sensor bias can be changed to adjust the color image density by using SP Mode # 75 as follows: Data ID Sensor Bias o . . 590 volts 1 . . 620 volts Normally, the data of SP Mode # 75 “O”.
Page 62: Service Call Condition
16 April ’88 SERVICE CALL CONDITION Self Diagnostic Code 31: Drum Thermistor Open Code 31 is displayed if the drum thermistor circuit becomes open. Self Diagnostic Code 32: PTL / ID Sensor Boaard Ope n Code 32 is displayed if the PTL / ID sensor board circuit becomes open or it is not set properly.
Page 63: Toner Density Detection And Toner Supply
16 April ’88 TONER DENSITY DETECTION AND TONER SUPPLY TONER DENSITY DETECTION Sensor Original Lead Edge Edge Erase [Low Toner] Developed Sensor The main CPU checks toner density by directly sensing the image density at the beginning of the first copy cycle after the main switch is turned on, and at every 10th copy after that.
Page 64 16 April ’88 The image density sensor checks the density of the sensor pattern image once every 10 copy cycles. The CPU receives two voltage values directly from the sensor: the value for the bare drum (Vsg) and the value for the sensor pattern (Vsp).
Page 65: Toner Density Control
April ’88 Detect mode A controls toner density as follows: High image density (no toner is added) Low image density (toner is added) SP Mode # 35 changes the toner end detection level and the timing cycle. The toner end detection level drops to 0.65 and the monitoring cycle is every 5 copy cycles.
Page 66: Toner Supply
16 April ’88 TONER SUPPLY Roller Drive Mechanism The toner supply clutch gear [A] turns when the main motor is on. T h e transmission of this rotation to the toner supply drive gear [B] is controlled by the toner supply clutch [C]. When the toner supply solenoid [SOLI ] energizes, the toner supply clutch engages and starts turning the toner supply drive gear.
Page 67: Toner Agitator Drive Mechanism
16 April ’88 2. Toner Agitator Drive Mechanism The toner agitator mechanism, contained in the toner cartridge, prevents toner from blocking. The toner supply roller gear engages the toner agitator gear [A] through an idle gear [B]. Therefore, the toner agitator gear turns whenever the toner supply clutch is engaged.
Page 68: Toner Supply Amount
16 April ’88 TONER SUPPLY AMOUNT This copier has two different ways of controlling the amount of toner sup plied. Normally, the detect supply system controls toner supply; however, a fixed supply system can also be selected. When color toner development unit is installed, the CPU automatically selects fixed supply mode.
Page 69: Toner End Detection
16 April ’88 TONER END DETECTION The CPU uses the image density sensor to detect a toner end condition. This method is effective in both detect and fixed supply modes. If Vsp becomes greater than 0.75 volt, the CPU determines that it is time to add toner and starts blinking the Add Toner indicator.
Page 70: Color Toner End Detection
16 April ’88 Color Toner End Detection [ E ] [ A ] [ c l [ D ] [ F ] The toner agitator gear [A] has a cam [B] (the toner end cam) on its inner surface, and it rotates only when toner is supplied. The cam follower on the end of the toner end lever [C] rides on the surface of the toner end cam (spring pressure).
Page 71: Abnormal Condition
16 April ’88 3. Abnormal Condition If Vsg becomes lower than 3.2 volts, the machine will reduce toner supply to half of the normal supply amount. (For example, the amount of toner supply condition, the Service Call indicator is not displayed and the machine can be operated.
Page 72: Image Transfer And Paper Separation
16 April ’88 IMAGE TRANSFER AND PAPER SEPARATION PRE-TRANSFER LAMP (PTL) After the latent image is developed but before the image is transferred to the copy paper, the drum surface is illuminated by the pre-transfer lamp [A]. This illumination reduces the positive potential on the drum surface. This prevents the toner particles from being re-attracted to the positively charged drum during the paper separation process.
Page 73: Paper Separation
April ’88 PAPER SEPARATION After image transfer the copy must be separated from the drum. To break the attraction between the paper and the drum, the separation corona wire [D] applies an ac corona (500 Hz) to the reverse side of the paper. The stiffness and weight of the paper causes it to separate from the drum [E].
Page 74: Pre-Transfer Lamp Circuit
16 April ’88 PRE-TRANSFER LAMP CIRCUIT When the Start key is pressed, the main board outputs a LOW signal to activate the pre-transfer lamp. The pre-transfer lamp, like the erase lamp, is an array of LEDs. However, the CPU does not control the individual elements of the pre-transfer lamp as it does the erase lamp.
Page 75: Transfer/Separationcorona Circuit
16 April ’88 TRANSFER/SEPARATION CORONA CIRCUIT When the Start key is pressed, the main board sends signals to energize the power pack for the transfer and separation coronas. The power pack has a dc to dc converter and a dc to ac inverter. The dc to de converter changes +24 volts to +5.6 kilovolts for the transfer corona.
Page 76: Pick-Off Mechanism
16 April ’88 PICK-OFF MECHANISM 1. Touch and Release Mechanism The pick-off solenoid [A] energizes 1.69 seconds after the Start key is pressed. The pick-off lever [B] rotates counterclockwise (rear view) and pushes the pawl shaft pin [C]. Then the pawl shaft [D] rotates clockwise and the pick-off pawls [E] touch the drum.
Page 77: Side To Side Movement
16 April ’88 2. Side to Side Movement The pick-off pawls [A] do not always contact the drum in the same place but instead move slightly to the side on each copy cycle. The pick-off pawl shaft [B] and the cam rider [C] are joined by a one-way bearing [D].
Page 78: Pick-Off Circuit
16 April ’88 PICK-OFF CIRCUIT S e p a r a t i o n S o l e n o i d M a i n B o a r d The main PCB supplies +24 volts to the pick-off solenoid at CN206-BI 2.
Page 79: Drum Cleaning
16 April ’88 DRUM CLEANING OVERVIEW [ c l The cleaning brush [A] and cleaning blade [B] remove any toner remaining on the drum after the image is transferred to the paper. The cleaning brush and drum move in opposite directions at their point of contact.
Page 80 16 April ’88 DRIVE MECHANISM The main chain [A] drives the cleaning unit when the main motor is on. The brush gear [B] is fitted into the cleaning drive sprocket [C]. A pin on the inside of the sprocket drives an allen screw [D] on the shaft of the gear, turning the gear.
Page 81: Cleaning Blade
16 April ’88 CLEANING BLADE solenoid [A] is energized, it turns the cleaning solenoid lever [B] clockwise [C], the (rear view). Due to the pull of the cleaning blade pressure spring pressure arm [D] also turns clockwise and pushes the cleaning blade lever [E] up.
Page 82 16 April ’88 BOTTLE VIBRATION TONER COLLECTION The toner collection bottle [A] is vibrated to prevent toner from building up in one place and activating the toner overflow sensor too early. The main drive chain [B] turns the drive sprocket [C]. The drive sprocket has a gear on the reverse side which turns the cam drive gear [D].
Page 83: Toner Overflow Sensor Circuit
16 April ’88 TONER OVERFLOW SENSOR CIRCUIT The toner overflow sensor [S14] signals the CPU when the toner collection bottle is full. used as A tiny tuning fork is the sensing element of the toner overflow sensor. This tuning fork is a damping element in multivibrator circuit.
Page 84: Cleaning Solenoid Circuit
16 April ’88 CLEANING SOLENOID CIRCUIT When the Start key is pressed or the main switch is turned on, the CPU sends a LOW signal to CN206-A24. This signal energizes the cleaning solenoid. Fifteen minutes after the main motor turns off, this signal becomes HIGH again, turning off the solenoid.
Page 85: Quenching Lamp
16 April ’88 QUENCHING LAMP In preparation for the next copy cycle, light from the quenching lamp [A] neutralizes any charge remaining on the drum [B]. The LED array lamp used for quenching is similar to the pre-transfer lamp (PTL) [C]; however, the light intensity of the quenching lamp is less than that of the PTL.
Page 86: Paper Feed And Registration
16 April ’88 PAPER FEED AND REGISTRATION OVERVIEW This model has two paper feed stations. The first cassette [A] and second cassette are located on the right side of the copier. The capacity of each of the cassettes is 250 sheets. As an option the second cassette can be replaced with a 1,000 sheet large capacity tray [6].
Page 87 April ’88 FRICTION PAD FEED SYSTEM This copier uses a feed roller and friction pad paper feed system. The friction pad separates a single sheet from the top of the stack of paper. When the feed roller [A] starts turning, it forces a single sheet of paper across the friction pad [B].
Page 88: Paper Lift Mechanism
16 April ’88 PAPER LIFT MECHANISM 1 m First and Second Feed Stations [ E ] When a cassette is inserted into the copier, the curved release guides on the sides of the cassette press against the rollers on the release levers [A] and force the release levers down.
Page 89 16 April ’88 2. Paper End Detection When a cassette or the LCT runs out of paper, the paper end feeler (A] drops through a slot in the cassette (or LCT) bottom plate. The paper end actuator [B], which is on the same shaft as the paper end feeler, pivots into the detector (photointerrupter).
Page 90 PAPER SIZE DETECTION [Actuator Plate Combination Table] Five microswitches in the cassette entrance detect the cassette tray paper size. The paper size switches [A] are actuated by a plate on the front of the cassette. Each paper size has its own unique combination of notches in the actuator plate [B].
Page 91: Paper Feed Drive
16 April ’88 PAPER FEED DRIVE The main drive chain [A] turns the paper feed drive sprockets. The upper drive sprocket [B] turns the first magnetic clutch [C], and the second feed magnetic clutch [D] through the idle gears [E]. 2-64...
Page 92: Manual Feed
16 ApriI ’88 MANUAL FEED The manual feed table [A] uses the same feed mechanism as the first cassette. When the manual feed table is opened, it forces down the copy the way for manual feed. A slot in the paper in the first cassette, clearing manual feed table allows the paper end feeler [B] to drop down and the Add Paper indicator turns on.
Page 93 16 April ’88 FEED AND REGISTRATION TIMING The following table shows the timing of the rollers used with the various feed stations. Main Drive M 2-66...
Page 94 16 April ’88 T1 ----- If the cleaning solenoid is on and the Start key pressed, then the main motor and the registration clutch turn on. T2 ----- The selected paper feed station’s paper feed clutch turns 0.63 the same time, the second after the Start key is pressed.
Page 95: Paper Transport
16 April ’88 PAPER TRANSPORT The copy paper rides on the transport belt [A] to the fusing unit [B]. A vacuum fan [C] holds the paper firmly against the belt so there is enough friction between the paper and the belt for smooth transportation. The transport belt is directly gear driven (no clutch);...
Page 96: Image Fusing And Paper Exit
16 April ’88 IMAGE FUSING AND PAPER EXIT OVERVIEW Two fusing rollers, which apply heat and pressure, fuse the image to the copy [A] is paper. The hot roller made of teflon, and the pressure roller is made silicone rubber with a teflon tube coating. Pressure is constantly applied between the rollers.
Page 97: Fusing Drive Mechanism
16 April ’88 FUSING DRIVE MECHANISM The fusing drive gear [A] turns the release gear [B] which drives the hot roller gear [C]. Rotation passes from the hot roller gear through two idle gears to the exit rollers. The friction between the hot roller and the pressure roller drives the pressure roller.
Page 98: Oil Supply And Cleaning
16 April ’88 OIL SUPPLY AND CLEANING Silicone oil is applied to the hot roller to help prevent toner and paper from sticking to the hot roller, to reduce paper curl, and to assist roller cleaning. A small one-way valve moves the oil from the oil tank [A] (capacity 580 cc) to the oil sump [B].
Page 99: Oil End Sensor
16 April ’88 OIL END SENSOR Oil end detection is based on the difference between the index of refraction of air and the index of refraction of silicone oil. The index of refraction of silicone oil (1.40) is very near that of the sensor casing (1.49);...
Page 100: Fusing Exit Assembly
16 April ’88 FUSING EXIT ASSEMBLY The fusing exit assembly [A] includes the fusing roller strippers [B], the lower fusing exit guide [C], the exit sensor, and the antistatic brush. The hot roller strippers prevent copy paper from wrapping around the hot roller.
Page 101: Image Fusing
16 April ’88 IMAGE FUSING Entrance Guide 1• The entrance guide [A] of this machine is adjustable for thick and thin paper. When using thin paper the entrance guide should be set in the upper position. This slightly lengthens the paper path which prevents the paper from creasing in the fusing unit.
Page 102 16 April ’88 SERVICE CALL CONDITIONS Self-diagnostic Code 53: Thermistor Open The main CPU checks the conductivity of the thermistor. Code 53 is displayed if the thermistor circuit is open. Self-diagnostic Code 54: No Warm-up ignal Code 54 is displayed if the hot roller does not reach the ready temperature within 8 minutes after the power is turned on.
Page 103 SECTION INSTALLATION...
Page 104 DRIVE MECHANISM ........... .2-53 CLEANING BLADE .
Page 105 16 April ’88 INSTALLATION REQUIREMENTS ENVIRONMENT 100C to 30°C (50°F to 86°F) Temperature Range: 2. Humidity Range: 3. Ambient Illumination: Less than 1,500 Iux (Do not expose to direct sunlight.) Ventilation: Room air should turn over at least 3 times/hour. Ambient Dust: Less than 0.15 mg/m oz/yd...
Page 106 16 April ’88 MACHINE LEVEL Front to back: Within 5 mm (0.2”) of level Right to left: Within 5 mm (0.2”) of level Place the machine on a table and screw the leveling foots [A] up or down to level the machine. Use a leveling gauge if necessary. MINIMUM SPACE REQUIREMENT 1.
Page 107 16 April ’88 POWER REQUIREMENT 1. Input voltage level: 11 0V/60Hz : More than 15A 115V/60Hz : More than 15A 220V/50Hz : More than 8A 220V/60Hz : More than 8A 240V/50Hz : More than 8A At least 300V, 30A capacity and less than 5 3.
Page 108 16 April ’88 COPIER INSTALLATION Accessory Check Check the quantity and condition of the accessories in the box according to the following list: 1. Installation Procedure (11 W - English only/220V - five languages) 2. New Equipment Condition Report 3. Envelope - NECR (115V only) 4.
Page 109 16 April ’88 2. Installation Procedure [ B ] [ D ] [ E ] [ C ] [ H ] 1. Remove the shipping tapes [A] from the copier as shown. 2. Open the front cover [B], and remove the shipping tape [C] and the wedge [D] between the registration rollers, and cut the cable tie [E] securing the toner collection bottle.
Page 110 16 April ’88 [ B ] [ F ] 6. Pull out the fusing unit [A] to the lock position and remove the fusing unit cover [B] (2 screws). Prime the oil supply pad [C] with silicon oil. Fill the oil tank [D] with silicon oil. Manually operate the oil pump lever [E] and confirm the proper operation of the silicon oil supply system.
Page 111 16 April ’88 screw) to the left, and un- Swing the toner collection bottle cover [A] (1 plug the toner overflow sensor connector [B]. 16 . Remove the toner collection bottle [C], and lower the T/S corona unit [D]. 17 . Place a sheet of paper [E] over the T/S corona unit.
Page 112 16 April ’88 When installing the development unit [A], be sure the development unit rail is properly engaged with the unit guide rail on the copier. 23. Install one toner cartridge [B]. NOTE: Confirm that the toner cartridge gear is properly engaged by attempting to rotate the cartridge counterclockwise.
Page 113 16 April ’88 25 . Place a few sheets of white paper (A3 or 11” x 17“) on the exposure glass and lower the platen cover. 26 . Plug in the machine and turn on the main switch. 27 . After the warm up period is completed, enter 99 copies and press the Start Key for drum conditioning.
Page 114 16 April ’88 COLOUR UNIT INSTALLATION 1. Accessory Check Check the quantity and condition of the accessories in the box according to the following list: 1. Actuator - Red 1 pc 2. Actuator - Blue 1 pc 3. Actuator - Green 1 pc 4.
Page 115 16 April ’88 2. Installation Procedure NOTE - The colour development unit should be installed after drum conditioning is finished. (See the copier installation procedure.) - The following procedure should be done when the colour developer is replaced. 1. Install the colour actuator [A] on the colour development unit (1 screw). NOTE: Each actuator has a coloured sticker.
Page 116 5. Remount the toner tank on the development unit. 6. Install a color development unit [A]. When installing the colour development unit, be sure the development unit rail is properly engaged with the unit guide rail on the copier. Install a colour toner cartridge [B]. Remove the DIP switch cover [C] (1 screw) and turn on DIP SW No.
Page 117: Key Counter Holder Installation
16 April ’88 KEY COUNTER HOLDER INSTALLATION NOTE: Three types of counters recommended for this copier (Ricoh, Hecon, and Hengstler key counters). Remove the front cover. Remove the registration knob [A] (1 screw) and the right inner cover [B] (3 screws).
Page 118 16 April ’88 ACCESSORY COUNTER INSTALLATION 1. Remove the front cover. 2. Remove the registration knob [A] (1 screw) and the right inner cover [B] (3 screws). cover using wire cutters. 3. Remove the cap [C] from the right inner space provided until it locks.
Page 119: Cassette Modification
16 April ’88 CASSETTE MODIFICATION 1. Take off the cassette cover [A]. 2. Remove the side fences [B] (1 screw each) and the bottom plate [C] (2 positioning pins). 3. Re-position the rear fence [D] in the desired paper size position (1 screw).
Page 120 16 April ’88 MODIFYING MAIN TRANSFORMER VOLTAGE (220V TO 240V) [A] \, 1. Remove the rear cover (2 screws). 2. Disconnect the 220V connector [A] (White: 1 P). 3. Connect the 240V connector [B] (Red: 1 P). Reinstall the rear cover. 3-16...
Page 121: Preparation For Transporting The Copier
16 April ’88 PREPARATION FOR TRANSPORTING THE COPIER Short Haul Transportation [B-] The copier may be seriously damaged if it is moved without proper preparation. Before moving the copier from its place of installation, be sure to prepare it for transportation as follows: 1.
Page 122 16 April ’88 2. Long Haul Transportation By Vehicle [ D ] [ A ] [ c l [ B ] If the machine is to be transported by vehicle, do the following steps after you have completed the short haul procedure. 1.
Page 123 SECTION 4 SERVICE TABLES...
Page 124: Po Table
I. Accessory Check ..........3-4 2.
Page 125 CONTENTS PO TABLE ..SERVICE TABLES . . TEST POINTS ..I. Main Board ..2. DF Main Board . VARIABLE RESISTERS I. Main Board ..2.
Page 126 16 April ’88 PM TABLE C: Clean R: Replace L: Lubricate ITEM 60K 120K 180K 240K NOTES OPTICS C , c Mirrors, lens, reflec- Silicone cloth or water (cot- tors, toner shield ton pad), blower brush glass, ADS Exposure glass Alcohol or water 3.
Page 127 16 April ’88 ITEM 60K 120K 180K 240K NOTES 23. (leaning unit 24. Pick-off pawls Replace if necessary 25. Used toner bottle Empty of used toner DEVELOPMENT UNIT 26. Developer If necessary 27. Upper brush seal 28. Side seals 29. Development unit guide 30.
Page 128 1) Scanner Guide Rod (Lubricate at 3k and 6k after installation if there is scanner noise; after that, every 240k). 2) Scanner Guide Rail (at every 60k). 2. Drive Section Lubricate the following parts at every 120k. 1 ) Toner supply spring clutch * Use Mobil Temp 78.
Page 129: Service Tables
16 April ’88 SERVICE TABLES TEST POINTS Main Board Function Number TP206 TP207 2. DF Main Board Number Function NOTE 1: To perform scanner free run, short TP101 and TP207.
Page 130: Variable Resisters
16 April ’88 VARIABLE RESISTERS Main Board Number Function Adjust the image density sensor voltage VR201 2. Lamp Regulator Number Function Light adjustment ADS input adjustment Factory Use 3. DF Main Board Number Function...
Page 131: Dip Switches
16 April ’88 DIP SWITCHES 1. Operation Panel DIP SW 1-1 Function DIP Switch Normal Drum conditioning Free run Jam detection disable Sorter instructions Beeper sound disable Copy “counter count up/down (ON: down, OFF: up) Manual image density mode priority (ON: manual mode, OFF: ADS mode) SP Mode 2.
Page 132: Service Program Mode (Sp Mode) Operation
16 April ’88 SERVICE PROGRAM MODE (SP MODE) OPERATION The service program mode is used to check and change electrical data or adjustment values. Data Change Mode Remove the DIP SW cover and turn on DIP SWI-8 on the operation panel.
Page 133: Service Program Modetable
16 April ’88 SERVICE PROGRAM MODE TABLE...
Page 134 April ’88...
Page 135 16 April ’88 4-10...
Page 136 16 April ’88 Factory Mode No. Function Data Remarks Setting 76 Sorter Bin Sets the stack mode Limit is determined by Capacity quantity limit. the paper size. Refer to NOTE 4. 86 PM Counter Turns on the PM For PB machines, “O” is counter.
Page 137 16 April ’88 NOTE 1: For sales demonstrations, you can turn on the all indicators without using DIP SW1 -8. The procedure is as follows: 1. Press the Mode Clear key. 2. Press the c/s key, then press the Enter key. 3.
Page 138 16 April ’88 NOTE SP Mode No.76 Limit Capacity Paper Size 10 sheets A3/DLT 30 sheets A4/LT 30 sheets A5/HLT NOTE 5: SP Mode No.93 To change the limit quantity, perform the following: 1. Turn DIP SW1-8 on. 2. Enter “93” using the numeral keys. 3.
Page 139: Service Remarks
16 April ’88 SERVICE REMARKS 1. Handling the Drum Never touch the drum surface with bare hands. Store the drum in a cool dry place. Always wear gloves when cleaning the drum. Only prime the drum with setting powder when installing new drum. Never expose the drum to light for a long time.
Page 140: Optics
16 April ’88 3. Optics Do not adjust the following parts: a. Scanner Guide Plate b. Fourth Mirror Angle Adjusting Screw c. Lens Home Position Sensor d. Lens unit rails The lens home position sensor does not have a convenient adjusting pro- cedure.
Page 141: Development
16 April ’88 4. Development Be careful not to nick or scratch the development roller sleeve. 2. Place a sheet of paper under the development unit when it is out of the copier. 3. Be careful not to bend the bias terminal. 4.
Page 142: 8'. Fusing
16 April ’88 Be careful not to damage the drum with the pick-off pawls when pulling out or inserting the cleaning unit. 5. When installing the toner collection bottle cover, be sure that the hooks of the transport plate are positioned underneath the bottle cover. 6.
Page 143: Document Feeder
16 April ’88 10. Document Feeder Do not bend the DF interface harness sharply, to avoid damaging the fiber optics cables. When servicing the document feeder, make sure that the main switch of the copier is off. When installing or reinstalling the document feeder, make sure that the document feeder is in the open position.
Page 144: Special Tools And Lubricants
16 April ’88 SPECIAL TOOLS AND LUBRICANTS Part Number Description Q ty 52159500 Doctor Gap Gauge Switching Board 52059601 52059101 Gap Gauge -0.1 mm 52069600 Sensor Checker 52039501 Grease (Shinetsu Silicone G-501) Setting Powder 54429101 Drum Shoe 54429106 54479104 Shoe Adapter DigitaI Thermometer 54209504 54209505...
Page 145 SECTION 5 REPLACEMENT AND ADJUSTMENT...
Page 146 3. Cleaning Brush Replacement........5-28 4.
Page 147 OTHERS ..........5-67 I.
Page 148: Optics
16 April ’88 OPTICS 1. Take off the left scale [A] (2 short screws). 2. Grasp the left edge of the exposure glass [B] and lift it up slightly. Slide the other edge out from under the right glass holder [C]. Remove the ex- posure glass.
Page 149 16 April ’88 2. 2nd Mirror Removal NOTE: This procedure is usually performed in order to make cleaning of the 3rd mirror easier. Turn off the main switch. Remove the exposure glass. (See Exposure Glass Removal.) Move the 1st scanner 2/3 to the right by pushing it at the rear. Remove the front spring plate [A] by pressing the top of the spring and moving the plate towards the front of the machine.
Page 150 16 April ’88 - To Reinstall - 8. Place the rear spring plate [A] in place and hold it with your finger. 9. Insert the 2nd mirror [B] into the front side plate cut out. 10. Insert the rear side of the mirror into the rear spring plate. 11.
Page 151 16 April ’88 3. Exposure Lamp Replacement [ D ] [ G ] [ E ] Do not touch the reflector [A] or the new exposure lamp with your bare hands. Use a strip of paper as shown. (Finger oil marks on the lamp or reflectors will be affected by the heat and will result in discoloration.) Turn off the main switch.
Page 152 16 April ’88 4. Auto ID Fiber Cable Replacement Remove the platen cover. Remove the exposure glass (see Exposure Glass Removal) and the upper cover (11 screws). Position the first scanner [A] in the cut out for scanner removal. Move the reflector cover [B] in the direction of the arrow (2 screws). NOTE: Unhook the fiber optics cable from the reflector cover.
Page 153 16 April ’88 5. Scanner Drive Wire Replacement 1. Turn off the main switch. 2. Remove the platen cover and the upper cover (11 screws). 3. Remove the left scale (2 short screws) and the exposure glass. 4. Remove the rear cover and lower the CB plate [A] (2 screws each). 5.
Page 154 16 April ’88 8. Position the bead [A] of the new wire [B] on the groove of the 2nd scan- ner drive pulley [C] and wrap the wire around the pulley with two and a half turns as shown. 9. Hook the short end [D] of the wire to the stopper [E] as shown.
Page 155 16 April ’88 Run the scanner drive wire over the pulleys in the following order: 1) Long end should be in the outer track (WP1) 2) Lower side (wire clamp [A]) 3) Lower track (WP2) 4) Three and a half turns from lower to upper (Scanner Drive Pulley [B]). 5) Lower track (WP3).
Page 156 6. Lens Drive Motor Replacement [ F ] Turn off the main switch and remove the following parts: Development unit 2) Charge corona unit (1 screw) 3) Toner collection bottle 4) Drum stay (1 screw and knob) 5) Uunit 6) Drum flange and drum - should be covered with a shielding sleeve. Remove the platen cover and the mounting studs.
Page 157 16 April ’88 7. 2nd Scanner Drive Motor Replacement [ A ] [ F ] Perform Steps 1 through 6 of “Lens Drive Motor Replacement.” Tape the 2nd scanner drive pulley [A] and the scanner drive wire as shown to avoid the scanner wire coming off. Remove the E-ring [B] from the 2nd scanner drive shaft and move the pulley slightly in the direction of the arrow.
Page 158 April ’88 Drive Motor Replacement Scanner W P 2 W P 3 Turn off the main switch. Remove the platen cover and the mounting studs. Remove the left scale (2 short screws), the exposure glass, and the upper cover (9 screws). Remove the rear cover 2 (screws).
Page 159 16 April ’88 9. Lens Home Position Sensor Replacement 1. Turn off the main switch. 2. Remove the left scale and the exposure glass. (See Exposure Glass Removal.) 3. Remove the lens cover (2 screws) and move the lens unit [A] in the direc- tion of the arrow.
Page 160 16 April ’88 11. 2nd Scanner Home Position Sensor Replacement 1. Turn off the main switch. 2. Remove the rear cover (2 screws). 3. Remove the sensor bracket [A] (1 screw). 4. Replace the 2nd scanner home position sensor [B] (1 screw and 1 con- nector).
Page 161 1. Turn off the main switch. 2. Remove the exposure glass. (See Exposure Glass Removal.) 3. Move the first scanner to the position where the rear frame is cut out. 4. Remove the front and rear terminal covers [A] (1 screw each). - Horizontal Adjustment - 5.
Page 162 April ’88 - Vertical Adjustment - 9. Position a mirror [A] beside the rear sight hole [B] at at 450 angle as shown. NOTE: If you do not have a mirror, remove and use the 2nd mirror. 10. View the lamp filament [C] through the sight hole reflected on the mirror. The filament should be level with the sight hole.
Page 163 16 April ’88 2nd Scanner Hight Adjustment 45 d e g r e e ADJUSTMENT STANDARD NOTE: It is the 2nd Scanner height when non square required to adjust images appears on a copy. 1. Turn off the main switch. 2.
Page 164: Development And Toner Supply
16 April ’88 DEVELOPMENT AND TONER SUPPLY 1. Developer - Be careful not to bend the bias terminal. - Be careful not to damage the upper brush seal. - After removing used developer, clean the drive gears and end magnets. Take out the development unit and remove the toner tank (2 screws).
Page 165 16 April ’88 2. Image Density Sensor/PTL Removal [ ’ A ] 1. Open the front door. 2. Remove the development unit [A]. 3. Slide out the image density sensor/PTL [B]. 4. Clean and reinstall the ID sensor/PTL. NOTE: When sliding in the ID sensor/PTL board, make sure that the board is properly located on the rails as shown.
Page 166 16 April ’88 3. Color Toner End Sensor Replacement [c’] 1. Turn off the main switch and remove the following parts: - Development unit - Charge corona unit (1 screw) - Drum stay (1 screw and 1 knob) - Cleaning unit - Drum flange and drum - should be covered with a shielding sleeve - Toner shield glass.
Page 167 16 April ’88 4. Color Toner Sensor Replacement [ B ] [ A ] 1. Remove the rear cover (2 screws). 2. Remove the color toner sensor bracket [A] (1 screw). 3. Replace the color toner sensors [B] (1 screw and 1 connector each). 4.
Page 168 16 April ’88 5. Toner Supply Clutch Lubrication Turn off the main switch. Remove the rear cover (2 screws). Remove the screw securing the dc harness guide [A] to the toner supply clutch support bracket [B]. Remove the toner supply clutch support bracket. Remove the clutch hub [C] (1 E-ring), the spring [D], and the sleeve [E].
Page 169 16 April ’88 Image Density Sensor Check and Adjustment NOTE: ID sensor adjustment is required in the following cases: - When the ID sensor/PTL board is replaced. - When the main board is replaced. When the drum has been replaced and Vsg is out of standard. - When a problem with toner supply occurs and checking the ID sensor shows that Vsg is not within specifications.
Page 170 Turn on the main switch and allow it to warm 5. Enter “55” using the Number keys, then press the Enter key. 6. Enter “99” in the copy counter. 7. Press the Start key to show Vsg in the magnification indicator. 8.
Page 171 16 April ’88 DIP SW — Method B: With a Digital Multimeter Follow steps 1 through 2 of method A. Confirm that the main switch is off and turn on DIP SW 1-8 on the main board. Hook up the multimeter leads as follows: Positive lead to TP206 (Vsg) Negative lead to TP201 (Ground) on the main board after selecting the 20-volt-dc setting.
Page 172 16 April ’88 [ D ] This adjustment is done only when the doctor blade has been either NOTE: removed or replaced. Remove the upper brush seal cover [A] (2 screws). Turn the development roller sleeve [B] in the opposite direction of normal operation to drop the developer into the development tank.
Page 173 16 April ’88 CLEANING 1. Cleaning Unit Removal [ E ] Be sure the pick-off pawls are kept away from the drum when removing the cleaning unit or serious drum damage will result. 5-26...
Page 174 16 April ’88 2. Cleaning Blade Replacement 1. Take out the cleaning unit [A]. (See Cleaning Unit Removal.) 2. Remove the cleaning blade [B] (1 screw and 1 bushing). 3. Install the new cleaning blade. - Be careful not to touch the edge of the new blade. - After installing the blade, make sure that the blade swivels.
Page 175: Cleaning Brush Replacement
16 April ’88 Cleaning Brush Replacement [ c l 1. Remove the cleaning unit drive gear [A] (1 Allen screw), the collar [B], and the bushing [C] from the rear end of the cleaning brush shaft. 2. Remove the bushing [D] from the front end (1 E-ring). 3.
Page 176: Blade Scraper Replacement
16 April ’88 Blade Scraper Replacement [ A ] Remove the cleaning blade. (See Cleaning Blade Replacement.) 2. Remove the cleaning brush. (See Cleaning Brush Replacement.) 3. Take out the blade scraper [A] (2 screws). 4. Clean the inside of the cleaning unit, and install a new blade scraper. 5-29...
Page 177: Toner Collection Coil Replacement
16 April ’88 5. Toner Collection Coil Replacement 1. Remove the E-ring [A] from the toner collection coil shaft. 2. Remove the bottle joint seal [B]. 3. Slide out the toner collection coil [C] from the front side of the cleaning unit.
Page 178: Pick-Off Pawl Replacement
16 April ’88 6. Pick-off Pawl Replacement 1. Remove the release spring [A] and the pressure lever [B] (1 screw). 2. Remove the collection coil gear [C] from the the toner collection coil shaft (1 E-ring). 3. Remove the pawl shaft pin [D] from the pawl shaft [E]. 4.
Page 179: Cleaning Pressure Adjustment
16 April ’88 7. Cleaning Pressure Adjustment [ A ] [ A’] ADJUSTMENT STANDARD: A = 1. Turn off the main switch. 2. Remove the rear cover (2 screws). Disconnect the fiber cables from the interface board if the DF is installed. 4.
Page 180 16 April ’88 [ F ] [ B ] [ A ] Set new pick-off pawls [A] on the shaft [B] and position them with the positioning pins [C] and pawl springs [D]. Assemble the pawl shaft assembly and set it on the cleaning unit sliding in 10 .
Page 181: Quenching
16 April ’88 QUENCHING 1. Quenching Lamp Replacement ‘ [ A ] 1. Remove the charge corona unit screw). [A] (1 2. Remove the corona unit (2 screws). quenching lamp [B] from the charge 5-34...
Page 182: Paper Feed
PAPER FEED 1. Manual Feed Table Removal 1. Remove the upper manual feed table hinges [A] from the copier (1 snap ring [B] each side). Be careful not to damage the manual feed sensor [C]. hinge pins [D] down their respective 2.
Page 183: Feed Roilers And Friction Pad Replacement
16 April ’88 2. Feed Rollers and Friction Pad Replacement 1. Remove the manual feed table (See Manual Feed Table Removal). 2. Remove the upper front guide plate [A] (2 screws). NOTE: Steps 1 and 2 are for 1st feed station only. 3.
Page 184: Registration Sensor Replacement
16 April ’88 Registration Sensor Replacement 1. Remove the rear cover (2 screws) and lower the PCB plate (2 screws). Remove the support bracket [A] (1 screw). 3. Move the main drive chain to the right of the PCB cut-out and slide out the registration sensor [B] (1 connector).
Page 185: Manual Feed Sensor Replacement
16 April ’88 4. Manual Feed Sensor Replacement 1. Remove the manual feed table [A]. (See Manual Feed Table Removal.) 2. Remove the rear cover (2 screws). 3. Remove the right rear cover (2 screws). 4. Remove the sensor cover [B] (1 screw). 5.
Page 186: Paper End Sensor Replacement
16 April ’88 5. Paper End Sensor Replacement - [ A ] 1. Remove the rear cover (2 screws). 2. Remove the paper end sensors [A] (1 connector each). Be careful not to damage the paper end sensor actuator. 5-39...
Page 187: Paper Size Sensor Replacement
16 April ’88 Paper Size Sensor Replacement 1. Remove the paper size sensor [A] from the sensor bracket [B] (1 screw and 1 connector). Install a new sensor. Position the projection of the sensor in the hole of the sensor bracket. NOTE: Do not overtighten the screw when securing the new sensor.
Page 188: Feed Pressure Adjustment
16 April ’88 Feed Pressure Adjustment Remove the rear cover. Move the pressure spring [A] to the desired position (see the following table). Feed Pressure Function Setting 350 g To prevent multi-feed. 400 g *Factory setting feed jam. 450 g To prevent 5-41...
Page 189: Registration Clutch Adjustment
April ’88 8. Registration Clutch Adjustment [ B ] 0.1 mm (0.004”) ADJUSTMENT STANDARD: Remove the rear cover (2 screws). the registration roller shaft (1 Allen Take the adjusting collar [A] off from screw). Loosen the screw in the lock collar [B] on the clutch which is to be ad- justed (1 Allen screw).
Page 190: Feedroller/Frictionpadgapadjustment (Lstand 2Nd Feed Station)
16 April ’88 Feed Roller/Friction Pad Gap Adjustment (lst and 2nd Feed Station) NOTE: This procedure is required when replacing the friction pad. 1. Remove the pressure arm [A] (2 screws). Push down the friction pad holder [B] to make the gap between the feed roller and the pad.
Page 191: Fusing
16 April ’88 FUSING 1. Fusing Unit Removal 1. Open the left and right front doors. 2. Push the fusing unit release lever [A] to the right. 3. Pull out the fusing unit [B] until it is fully extended. 4. Push the fusing unit release lever to the right, move the fusing unit to the left to disengage the stopper pin [C], and remove the unit from the copier.
Page 192 16 April ’88 Replacement 1. Remove the fusing unit. (See Fusing Unit Removal.) 2. Remove the fusing unit cover [A] (2 screws). 3. Remove the pressure plate [B] (2 screws). 4. Remove the oil supply pad [C] (2 screws and 2 clamp plates [D]). 5.
Page 193: Hot Roller Replacement
16 April ’88 3. Hot Roller Replacement 1. Remove the oil blade. 2. Remove any excess remove the oil sump. 3. Remove the fusing unit knob [B] (1 screw), 4. Remove the oil pump mechanism [C] with the oil tank [D] (2 screws and 1 connector).
Page 194 16 April ’88 Remove the hot roller gear [A], bearings [B], and the collars [C] from both ends of the hot roller [D] (1 C-ring each). Slide the hot roller slightly to the rear and remove the hot roller as shown. 11 .
Page 195: Pressure Roller Replacement
16 April ’88 4. Pressure Roller Replacement ‘ [ A ] [ F ] 1. Remove the fusing unit and cover (2 screws). 2. Remove the fusing unit knob [A] (1 screw). 3. Remove any excess oil from the oil sump [B]. 4.
Page 196: Hot Roller Stripper Replacement
16 April ’88 5. Hot Roller Stripper Replacement 1. Pull out the fusing unit and open the fusing exit assembly [A]. 2. Unhook the springs [B] and remove the hot roller strippers [C]. 3. Install new strippers and connect the springs. NOTE: It is best to replace strippers and springs as a set.
Page 197: Thermistor Replacement
16 April ’88 6. Thermistor Replacement [ E ] 1. Remove the fusing unit. 2. Remove the fusing unit cover [A] (2 screws). 3. Remove the pressure plate [B] (2 screws). 4. Remove the oil supply pad [C] (2 screws and 2 clamp plates [D]). 5.
Page 198: Thermofuse Replacement
16 April ’88 7. Thermofuse Replacement 1. Perform steps 1 to 3 of “Thermistor Replacement”. 2. Remove the thermofuse bracket [A] (1 screw). 3. Remove the oil pump mechanism [B] with the oil tank [C] (2 screws and 1 connector). 4.
Page 199: Fusing Pressure Adjustment
16 April ’88 8. Fusing Pressure Adjustment [ A ] 1. Remove the fusing unit. 2. Remove the fusing unit cover (2 screws). 3. Remove the fusing unit knob (1 screw). Remove the oil pump mechanism along with the oil tank (2 screws, 1 con- nector).
Page 200: Entrance Guide Hight Adjustment
16 April ’88 9. Entrance Guide Hight Adjustment 1. Remove the fusing unit. 2. Move the knob [A] to the front to raise the fusing guide plate [B]. Move the knob to the rear to the rear to lower the fusing guide plate. (The movement range is 1 mm.) NOTE: Normally the entrance guide is set in the lower position (factory setting).
Page 201: Transport
16 April ’88 TRANSPORT 1. Transport Unit and Transport Belt Removal Swing the toner collection bottle cover [A] to the left (1 screw). Disconnect the toner overflow sensor connector [B]. Remove the toner collection bottle [C]. Remove the development unit [D], PTL board [E], and the charge corona unit [F] (1 screw).
Page 202 16 April ’88 [ G ] [ D j [ c l ‘ [ E ] [ F ] Remove the rear cover and lower the PCB plate (2 screws each). Remove the transport and separation power pack (1 screw). 10 .
Page 203: Vacuum Fan Motor Replacement
April ’88 2. Vacuum Fan Motor Replacement 1. Remiove the transport belt. (See Transport Unit and Transport Belt Removal.) 2. Remove the transport plate [A] from the vacuum fan unit [B] (3 screws and 1 connector). 3. Remove the fan motor [C] (2 screws). 5-56...
Page 204: Corona
16 April ’88 CORONA 1. Corona Wire Replacement - Do not handle new corona wires with your bare hands. Oil on the wire will cause uneven charge on the drum. - Do not rub the corona wires with rough material (sandpaper, etc.) as it will damage the corona wires.
Page 205 16 April ’88 4. Unhook the corona wire [A] from the front anchor post [B] by pulling in the direction of the arrow using a small screw driver. 5. Remove the old corona wire. 6. Clean the endblocks, the covers, and the corona unit casing with a blower brush and dry cloth.
Page 206 16 April ’88 - T/S Corona Wires - The eccentric cams [A] are used In the production line only to adjusl the gap between the guide mylar [B] and the selenlum drum. Lower the transport and separation unit then remove it. Slide the corona paper guide [C] to the rear, by pushing up the guide stopper [D] from underneath.
Page 207 16 April ’88 Hook the tension spring onto the other end of the corona wire. Then hook the tension spring onto the front endblock anchor post. Insert the wire junction [A] of the new separation corona wire through the hole in the rear endblock and hook the terminal spring onto the nearby wire junction.
Page 208: Drum Current Adjustment
16 April ’88 2. Drum Current Adjustment NOTE: The drum currents vary with environmental conditions such as humidity and atmospheric pressure. Generally it is not necessary to adjust the drum currents because they have already been adjusted for a range of environments at the factory. Drum current adjustment may be required when there are problems with paper separation, incomplete toner transfer, or image density.
Page 209 16 April ’88 [ A ] 2. Clean or replace each corona wire. Also clean the corona units and the cleaning unit. 3. Actuate the front safety switch. 4. Remove the rear cover (2 screws). 5. Plug the switching board into connector CN210 of the main board as shown.
Page 210 16 April ’88 Slide the drum shoe [A] to its rear limit as shown (X), Position the drum shoe so that the axis of the current sensing plate is aligned with the charge corona wire as shown. Reinstall the drum stay (1 screw and 1 knob) and the charge corona unit. Select the dc 200 VA range of the digital multimeter [B].
Page 211 16 April ’88 8. Adjust the front corona wire height adjusting screw if the two readings differ. The difference between front and rear should not be more than 0.2 reading. NOTE: - Turn the adjusting screw clockwise to increase the - Turn it counterclockwise to decrease the reading.
Page 212 16 April ’88 - Transfer Corona - [ c l 1. Reinstall the T/S corona unit and position the drum shoe [A] on the center of the shaft so that the axis of the current sensing plate is aligned with the transfer corona wire as shown.
Page 213 16 April ’88 Separation Corona - OPTIMUM ADJUSTING VALUE: Position the drum shoe [A] on the center of the shaft so that the axis of the current sensing plate is aligned between the separation corona wires as shown. Reinstall the drum stay (1 screw and 1 knob) and return the T/S corona unit to its original position.
Page 214: Others
16 April ’88 OTHERS 1. Operation Panel Removal Remove the DIP switch cover [A] under the instructions cards (1 screw). 2. Remove the front cover. 3. Remove the right inner cover [B] (3 screws). 4. Remove the operation panel [C] (2 screws and 3 connectors). 5-67...
Page 215 16 April ’88 2. Power Supply Unit Removal 1. Remove the power supply unit cover [A] (4 screws). 2. Remove the harness clamps [B] (1 screw each). Remove the heat plate [C] (9 screws). Disconnect all the connectors. 5. Remove the power supply unit [D].. 5-68...
Page 216 16 /prii ’88 - Development unit - Charge corona unit (1 screw) - Drum stay (1 screw) - Toner collection bottle - Cleaning unit - Drum flange - Drum - should be covered with a shielding sleeve - Drum guide - T/S corona unit Remove the left inner cover (2 screws), the center inner cover (6 screws), and the rear cover (2 screws).
Page 217: Copy Image
16 April ’88 COPY IMAGE 1. Light Intensity Adjustment NOTE: - This adjustment should be done when the rest time compensation of the bias voltage is OV-when the main power switch has just been turned on. Auto ID sensor adjustment must be done after light intensity adjustment.
Page 218 16 April ’88 Confirm that the main switch is off and turn on DIP SW 1-8 so that copies can be made in spite that the manual feed table is open. Then, turn on the main switch. Open the manual feed table [A]. Remove the magnetic catch bracket [B] (1 screw).
Page 219: Auto Id Sensor Adjustment
16 April ’88 2. Auto Sensor Adjustment - Method A: Using the CPU - Perform the light intensity adjustment before performing the Auto ID sen- sor adjustment. Remove the DIP switch cover (1 screws). Turn off the main switch and turn on DIP switche Nos. 1-1 and 1-8. Open the manual feed table and remove the magnet catch bracket (1 screw).
Page 220 16 April ’88 7. Place a few of A3 (11“ x 17“) paper on the exposure glass. 8. Enter “56” using the numeral keys, then press the Enter key. 9. Enter “99” using the numeral keys ,then press the Start key . 10.
Page 221 16 April ’88 - Method B: Using a Digital Multimeter - Perform steps 1 and 2 of method A. 1. Confirm that the main switch is off and turn on DIP switch No. 1-1 and No. 1-8 on the operation panel. 2.
Page 222 16 April ’88 ~ 5. Place 5 sheets of paper (A3 or 11” x 17“) on the exposure glass. 6. Turn on the main switch and select the Auto ID mode, then enter “99” using the numeral keys. Press the Start key after the copier warms up. , 7.
Page 223: Horizontal Magnification Adjustment
16 April ’88 3. Horizontal Magnification Adjustment - Method A: Using the wire clamp 1. Remove the rear cover (2 screws). 2. Remove the two mounting studs and eight screws securing the upper cover. wire clamp [A] (1 3. Lift the back edge of the upper cover and loosen the screw).
Page 224: Vertical Magnification Adjustment
16 April ’88 4. Vertical Magnification Adjustment Adjust the vertical component of magnification (scanner forward velocity) using SP mode # 43. 5. Lead Edge Registration Adjustment ADJUSTMENT STANDARD: 1. Place a 150 mm scale on the exposure glass, aligning it with the left scale. 2.
Page 225: Document Feeder
SECTION 7 DOCUMENT FEEDER...
Page 226 MISFEED CHECK ........... ..7-13 DOCUMENT FEEDER INSTALLATION .
Page 227: Specifications
April ’88 DOCUMENT FEEDER SPECIFICATIONS Original Size: Weight: Original Feed Modes: Original Capacity: Original Separation: Original Transportation: Original Stop System: Original Feed Speed: Power Source: Power Consumption: Dimensions: ( W X D X H ) Weight: Copier Interface Equipment: z7-1...
Page 228: Mechanical Component Lqyout
16 April ’88 MECHANICAL COMPONENT LAYOUT Feed Roller Pick-up Roller Original Table Registration Rollers...
Page 229: Electrical Component Layout
16 April ’88 ELECTRICAL COMPONENT LAYOUT 1. Indicator PCB (PCB-1O) 9. Lift Switch (SW-1 O) 2. Feed-in Motor (M-14) 10. DF Main PCB (PCB-I 1) 3. Feed-in Sensor (S-34) 11. Belt Drive Motor (M-16) 4. Entrance Sensor (S-35) 12. Pick-up Solenoid (Sol-7) 5.
Page 230 16 April ’88 The DF has its own CPU which controls all of the DF functions. The DF CPU communicates with the copier through an interface board [A] and serial interface bus [B]. Fiber optics . [C] are used for the serial interface bus because they are unaffected by electrical noise.
Page 231: Feed-In Unit Mechanism
16 April ’88 FEED-IN UNIT MECHANISM After an original is inserted into the feed-in unit and the Start key is pressed, the DF CPU energizes the pick-up solenoid [S01-7] and the pick-up roller [A] drops onto the top of the original(s). At the same time, the DF CPU energizes the original stopper solenoid [Sol-1 O] to retract the stopper claws [B].
Page 232: Separation Mechanism
16 April ’88 SEPARATION MECHANISM [ c l ----- of friction between the feed rollers and the original. Coefficient ----- Coefficient of friction between the friction rollers and the original. ----- Coefficient of friction between originals. This model uses an FFR (Feed and Friction Roller) original feed system with three sets of rollers (feed, friction and pick-up roller).
Page 233: Misfeed Prevention
16 April ’88 MISFEED PREVENTION The front side of the friction roller [A] is attached to the misfeed prevention lever [B] through a one-way clutch. When the leading edge of an original first contacts the feed [C] and friction rollers [A], the friction roller is stationary. As the leading edge is fed between these rollers, the friction roller rotates counter clockwise a few degrees to help feed thick originals [D].
Page 234: Wear Prevention
16 April ’88 WEAR PREVENTION The rear side of the feed roller shaft drive gear has an eccentric cam [A]. This cam contacts the wear prevention lever [B] which is attached via a one-way clutch to the friction roller shaft [C]. This lever is free to rotate in the direction of the white arrow As the feed roller drive gear rotates, the high point of the cam pushes back the wear prevention lever in the...
Page 235: Friction Roller Release Mechanism
16 April ’88 FRICTION ROLLER RELEASE MECHANISM In the ADF mode, when the original activates the original entrance sensor [S-35], the DF CPU energizes the roller release solenoid [S01-9]. This action rotates the roller release cam shaft, which has an eccentric cam [A] on each end, to decrease the overlap of the feed and friction rollers.
Page 236: Registration
16 April ’88 REGISTRATION The DF CPU stops the feed-in motor [Ml 30 milliseconds after the leading edge of the original activates the original entrance sensor [S-35]. The original’s own forward momentum, which causes the original to align against the registration roller [A], corrects the skew. After a further 30 milliseconds, the DF CPU energizes the belt drive motor [M-1 6] and the registration solenoid [S01-8].
Page 237: Feed-Out Mechanism
16 April ’88 FEED-OUT MECHANISM When the DF CPU receives the feed-out signal, it energizes the belt drive and feed-out motors. The feed-out motor [M-1 5] drives both ‘the lower exit roller [A] and the upper exit roller [B] through an idle gear. When the exit sensor [S-38] detects the trailing edge of the original, the CPU reduces the speed of the feed-out motor to feed the original out completely.
Page 238: Lifting Mechanism
16 April ’88 LIFTING MECHANISM The torsion spring [A] is installed inside the torsion spring collars. A screw fixes the center of the torsion spring, and both sides of the spring are twisted when the belt unit is lowered. The spring tension makes it easier to lift up the belt unit.
Page 239: Misfeed Check
16 April ’88 MISFEED CHECK Feed-in Motor R e g l s t r a t l o n Sensor ON check OFF check 350 ms Exit Sensor [S-38] [s-35] [s-37] Three sensors are used for misfeed checks: the entrance sensor [S-35], registration sensor [S-37], and exit sensor [S-38].
Page 240: Document Feeder Installation
April ’88 DOCUMENT FEEDER INSTALLATION 1• Accessory Check Check the quantity and condition of the accessories in the box according to the following list: 1. Installation procedure (115V - English only/220V - five languages) 2. New Equipment Condition Report 3. Envelop - NECR(115V only) 4.
Page 241 16 April ’88 1. Turn off the main switch and unplug the power supply cord of the copier. 2. Remove the following parts: A) Platen cover B) Mounting stud (2 pcs) C) Truss screw D) Plastic screw E) Left scale (2 screws) F) Rear cover (3 screws) G) ADF docking hole cap (2 pcs)
Page 242 16 April ’88 Lower the PCB plate [A] (2 screws). Insert the mounting posts [B] into the DF mounting brackets [C]. Temporarily secure the mounting posts to the DF mounting brackets (4 screws, M5 x 12). 10 . Remove the DF cover [D] (4 screws). 11 .
Page 243 16 April ’88 12. Install the original feed table [A] on the right side of the belt unit [B] (2 screws with washer). (Be sure to engage the 2 hooks [C] of the original table with the docking holes [D] of the belt unit). 13 .
Page 244 16 April ’88 e) Adjust the height of rear side of the belt unit as follows: Lift the upper part of the feed belt out of the way and measure the distance between the top of the access hole [A] in the pressure roller support bracket and the lower part of the feed belt at the front and rear left corners.
Page 245 16 April ’88 15 , Pass the DF interface harness [A] through the harness hole [B] of the DF and the docking hole of the copier [C]. 16. Connect the DF interface harness to the DF PCB [D] (3 connectors). NOTE: The fiber optics connectors [E] have different colours.
Page 246 16 April ’88 20. Secure the copier PCB plate (2 screws). 21. Fix the two PCB mounting studs [A] on the main board and install the in- terface board [B]. (This is not necessary if a sorter is already installed in the machine.) 22.
Page 247 16 April ’88 [ B ] 24 . Turn on DIP switch 101-2 [A] on the DF main PCB, Adjust the lead edge registration as follows: a) Turn on the copier main switch and make a copy in the platen mode using the flip scale and the test chart.
Page 248: Replacement And Adjustment
16 April ’88 REPLACEMENT AND ADJUSTMENT DF Belt Replacement [ F ] 1. Remove the DF cover (4 screws, 2 collars). 2. Remove the 2 screws securing the left side of the front stay [A] and remove the 3 belt unit holders [B]. 3.
Page 249: Pick-Up Roller Replacement
16 April ’88 2. Pick-up Roller Replacement [ B ] [ c l 1. Remove the DF cover (4 screws, 2 collars). 2. Lift up the pick-up roller unit [A] and remove the snap ring [B]. Slide off the rear pick-up roller [C]. NOTE: Be careful not to lose the pin.
Page 250 16 April ’88 [ B ] 6. Slide off the pulley [A] and the pick-up roller [B]. NOTE: Be sure not to lose the drive pins [C] of the pulley and pick- up roller. 7-24...
Page 251 16 April ’88 3. Feed Roller Replacement [ B ] [ A ] 1. Remove the DF cover (4 2. Remove the pick-up control shaft [A] (1 snap ring [B], 1 pin [c]). 3. Remove the feed-in motor [D] (2 screws). 4.
Page 252 16 April ’88 Remove the two snap rings [A] fixing the feed-in guides [B]. Remove the feed roller drive gear [C] (1 E-ring [D], 1 bearing [E]). Remove the collar [F] (1 Allen screw [G]) and the bearing on the front feed roller shaft [H].
Page 253 16 April ’88 [ B ] [ F ] 10. Slide off the feed-in guides [A] and remove two E-rings [B]. 11. Remove the bushing [C] and slide the pulley towards the front to remove the pulley pin [D]. 12. Slide the pick-up roller unit [E] to the front and remove the E-ring. 13.
Page 254 16 April ’88 [ B ] 16. When reassembling the feed roller unit, make sure of the following points: Confirm that the wear prevention lever [A] is to the right of the drive gear [B] as viewed from the rear. Tighten the Allen screw of the feed roller shaft [C] collar [D] so that the clearance between the bushing and collar is 0.15 mm (check with a thickness gauge [E]).
Page 255: Friction Roiler Replacement
16 April ’88 4. Friction Roller Replacement 1. Remove the DF cover screws, 2 collars). 2. Remove the original table cover [A] screws). 3. Remove the original table [B] (2 screws). 4. Remove the lever spring [C] and the stopper plate [D] (2 screws). 5.
Page 256 April ’88 7. Remove the front stud screw [A] and take out the original entrance guide [B] . Unhook the spring [C] of the misfeed prevention lever [D] and remove the misfeed prevention lever and the bushing [E] (1 E-ring [F]). 9.
Page 257 Loosen the Allen screw in the collar [A] on the friction roller shaft [B] and remove the friction roller assembly [C]. Remove the E-ring [D] and replace the friction roller [E]. NOTE: - Be sure not to lose the pin [F]. When reassembling the unit, make sure of the following points: When replacing the collar on the friction roller shaft, position the friction roller so that it is centered on the feed roller.
Page 258: Registration Roller Replacement
16 April ’88 5. Registration Roller Replacement Remove the DF cover (4 screws, collars). Remove the indicator board [A] screws). Remove the harness clamp [B] as shown (1 screw). Disconnect the registration solenoid harness [C] and roller release red connectors). solenoid harness [D] (2 Move the indicator board and the harness bracket [E] (1 screw) away from the feed-in section.
Page 259 16 April ’88 [ c l 8. Slip off the timing belt [A] while lifting the belt tightener. 9. Remove the registration clutch assembly [B] (1 E-ring). 10. At the front, remove the lever spring [C] and lower the original entrance guide [D].
Page 260: Stopper Plate Position Adjustment
16 April ’88 6. Stopper Plate Position Adjustment Reinstall the stopper plate as follows: 1. Remove the spring [A] of the friction roller release solenoid [B] and keep the solenoid plunger inside the coil. 2. Loosen the two screws of the stopper plate [C]. 3.
Page 261: Dfbelt Drive Motor Speed Adjustment
16 April ’88 7. DF Belt Drive Motor Speed Adjustment This adjustment should be done when the DF PCB [A] is replaced. Turn off the main switch. Remove the DF cover (4 screws, 2 collars). Lower the DF unit. Turn on DIP switch nos. 101-2 and 101-4 of the DF main board. Turn on the main switch.
Page 262: Lead Edge Registration Adjustment
6 April ’88 8. Lead Edge Registration Adjustment 1. Adjust the lead edge registration as follows: a) Turn on the copier main switch and make a copy using the test chart in the platen mode using the flip scale to align the originaL b) Keep this copy for reference and mark “PM”...
Page 263: Sorter
SECTION 8 SORTER...
Page 264 CONTENTS SORTER ........9..9.99.8-1 SPECIFICATIONS ............8-1 MECHANICAL COMPONENT LAYOUT .
Page 265: Specifications
16 April ’88 SORTER SPECIFICATIONS Maximum A3, 11” x 17” Paper Size for Bins: 51/2” x Minimum 66, 81/2” to 110 grams (14 to Paper Weight: 28 lb) Number of Bins: 20 bins + proof tray Sort Mode 30 sheets/A4 x 11”) Bin Capacity: (81/2”...
Page 266: Mechanical Component Layout
April ’88 MECHANICAL COMPONENT LAYOUT . Exit Rollers 4. Bins .2. Bin Drive Wheel 5. Roller Drive Belt 3. Proof Tray...
Page 267: Electrical Component Layout
16 April ’88 ELECTRICAL COMPONENT LAYOUT 1. Paper Sensor (S-31) 2. Wheel Drive Motor (M-11) 3. Roller Drive Motor (M-12) 4. Bin Home Position Sensor (S-32) 5. Wheel Sensor (S-33) 6. Sorter Control PCB (PCB-9) 7. Cover Safety Switch (SW-9) 8.
Page 268: Basic Operation
16 April ’88 BASIC OPERATION 1. Clear Mode When the main switch of the copier is turned on, the sorter automatically assumes the clear mode. It also changes to the clear mode if the sort or stack mode is recalled or if the interrupt key is pressed. In the clear mode, all copies are stacked on the proof tray.
Page 269: Example Of Sort Mode Operation
16 April ’88 4. Example of Sort Mode Operation “3” copies entered/Start key pressed times. Start key ON - turns off. (The sorter will stay at this position until auto-reset or until copying resumes.) Start Kev ON - The first copy is fed to the third bin. After the paper detector turns off, the wheel drive motor turns on and moves the second bin down.
Page 270: Bin Drive Mechanism
16 April ’88 BIN DRIVE MECHANISM [ E ] The bin drive mechanism moves the bins [A] up and down to receive copies under the direction of the copier CPU. The main components in this mechanism are the wheel drive motor [M 11 ], the two transfer wheels [B], the wheel sensor [S33], and the bins themselves.
Page 271: Bins
16 April ’88 The transfer wheels have two slots in them 180 degrees apart. As the transfer wheels turn, these slots engage the pins of the bins and lift them up. Each time the transfer wheels turn 180 degrees, they raise one bin. The CPU counts the bins using the wheel sensor.
Page 272: Exit Rollers
16 April ’88 EXIT ROLLERS The exit roller shaft is hollow and is mounted on the transfer wheel shaft [Al (coaxial). When the copy actuates the copier’s exit sensor, the CPU send; a signal to the sorter to turn on the roller drive motor. The roller drive motor turns off at the same time as the copier main motor (M-12).
Page 273: Electrical Control
16 April ’88 ELECTRICAL CONTROL ‘1 BIN DOWN R E L A Y C O V E R Cover Safety The copier CPU, through an I/O-controller IC on the interface board, controls all the functions of the sorter. The copier supplies 100 volts ac to the wheel drive motor and the SSRS. SSR 101 turns the wheel drive motor to move the bins up and SSR 102 is for the down operation.
Page 274: Sorter Installation
16 April ’88 SORTER INSTALLATION 1. Accessory Check Check the quantity and condition of the accessories in the box according to following list: 1. Installation Procedure (115V - English/220V - five languages) 2. New Equipment Condition Report 3. Envelope-NECR (115V only) 4.
Page 275 16 April ’88 [ B ] [ E ] 1. Remove the strips [A]. 2. Turn off the main switch and unplug the power supply cord of the copier. 3. Remove the receiving tray [B], and rear cover [C] (2 screws). 4.
Page 276 16 April ’88 [ G ] Fix the two PCB mounting studs [A] on the main board and install the in- terface board [B]. studs [C] Screw the mounting into the docking hole. 10 . Mount the sorter on the copier. Pass the harness through the access hole.
Page 277: Replacement And Adjustment
16 April ’88 REPLACEMENT AND ADJUSTMENT Exit Roller and O-Ring Replacement [ A l 1. Remove the sorter from the copier and the sorter adapter from the sorter. 2. Remove the front and rear covers (2 screws each). 3. Remove the ground wire [A] of the upper guide plate [B] (1 screw). 4.
Page 278 16 April ’88 [ c l [ D ] [ B ] 7. Remove the wheel sensor assembly [A] (1 screw). 8. Remove the rear transfer wheel [B] (1 E-ring). NOTE: Be sure not to lose the pin [C] of the wheel. Remove the pin and bushing [D].
Page 279: Paper Sensor Replacement
16 April ’88 2. Paper Sensor Replacement 1. Remove the sorter from the copier and the sorter adapter from the sorter. 2. Swing up the guide plate [A]. 3. Remove the inner cover [B] (4 screw). 4. Replace the paper sensor [C] (1 screw and 1 connector) and reas- semble.
Page 280: Timing Belt Tension Adjustment
16 April ’88 3. Timing Belt Tension Adjustment ADJUSTMENT STANDARD: 200 g (deflection at (0.44 lb) pressure) 200 g (0.44 lb) Remove the front cover. Loosen the four mounting screws [A] of the wheel drive motor [B]. Press the timing belt [C] with a tension gauge [D] as shown in the figure and adjust the tension by repositioning the wheel drive motor.
Page 281: Sorter Control Board Schematic
16 April ’88 ORTER CONTROL BOARD SCHEMATIC IOOV AC s 1 0 2 – 1 A 0 2 4...
Page 282 SECTION 9 LARGE CAPACITY TRAT...
Page 283 CONTENTS LARGE CAPACITY TRAY ........9-1 SPECIFICATIONS ..........
Page 284: Large Capacity Tray
16 April ’88 LARGE CAPACITY TRAY SPECIFICATIONS B4 (length) Copy Paper Size: A4 (length or width) B5 (length or width) x 14“ (length) 81/2” x 11” (length or width) 81/2” 50gto ll0g (141b to 281b) Copy Paper Weight: 1,000 sheets (may vary slightly depending on Tray Capacity: paper weight) 12 seconds...
Page 285: Mechanicalcomponent Layout
16 April ’88 MECHANICAL COMPONENT LAYOUT 1. Drive Wire 4. Tray Wire 2. Drive Gears 5. Lift Rods 3. Drive Pulley.
Page 286: Electricalcomponent Layout
16 April ’88 ELECTRICAL COMPONENT LAYOUT LCT transformer (T-2) LCT PCB (PCB-12) Ac fuse (F-2) (220 V) Circuit breaker (CB-2) (115 V) LCT motor (M-17) LCT safety switch (SW-11) Tray down sensor (S-39) Positioning switch (SW-1 2) Paper size sensor (S-40) LCT operation panel (PCB-13) Paper end sensor (S-41 ) Upper limit sensor (S-42)
Page 287: Mechanicaloperation
16 April ’88 MECHANICAL OPERATION 1. Drive Mechanism A reversible ac motor [A] drives the LCT’S bottom plate up and down. The motor’s drive is transmitted directly to the tray drive shaft [B] via a worm gear and worm wheel. The tray wires [C] have braces on them; these braces hold the ends of the two lift rods which support the tray bottom plate.
Page 288: Pick-Up Roller Mechanism
16 April ’88 2. Pick-up Roller Mechanism The pick-up roller [A] is driven by a drive gear [B] to initialize feed paper from the LCT. The paper end sensor [C] and the upper limit sensor [D] are incorporated in the LCT not the copier. The paper end sensor is used to detect paper end and the upper Iimit sensor detects when the tray has reached its upper limit when the tray is being raised.
Page 289: Paper Size Detection
16 April ’88 3. Paper Size Detection The paper size dial controls side post positioning and paper size detection. When the paper size dial [A] is rotated, the cam groove [B] moves the size lever [C], which repositions the guide posts [D]. When the dial reaches a standard paper size, one of the actuator plates [E] enters the paper size sensor [F].
Page 290: Electricaloperation
16 April ’88 ELECTRICAL OPERATION Tray Board D o w n K e y Close Cover I n d i c a t o r Cover Safety SW Down The bottom plate moves down only when the Down key is pressed or paper end occurs.
Page 291: Large Capacity Tray Installation
16 April ’88 LARGE CAPACITY TRAY INSTALLATION Accessory Check Check the quantity and condition of the accessories in the box according to following list: Installation procedure (115V English only/220V - five languages) New Equipment Condition Report Envelope - NECR (1 15V only) Pick-up roller assembly Feed Gear B, C)
Page 292 16 April ’88 Turn off the main switch and unplug the power supply cord of the copier. Move the copier to the right. NOTE: The copier must be moved to the right so that the large capacity tray can overhang the end of the table. Remove the rear cover (2 screws).
Page 293 16 April ’88 [ B ] [ B ] Install the mounting bracket (Type C, Chrome) on the large capacity 13 . tray (2 screws, M4 x 6 each). 14 . Remove the 5 strips of shipping tape [B]. 15 . Reinstall the rear right side cover [C].
Page 294 16 April ’88 20 . Clamp the LCT harness [A] to the base plate with the nylon wire clamp [ B ] . Install the pick-up roller assembly [C] on the feed roller shaft. Install the gear [D] on the feed roller shaft. 23 .
Page 295: Replacementand Adjustment
16 April ’88 REPLACEMENT AND ADJUSTMENT 1• Tray Wire Replacement Unplug the tray power supply cord. > - Front Wire - 1. Remove the following parts: 1) Front cover (2 screws and 1 connector) 2) Nylon clamp holding the operation board harness (1 screw) - Rear Wire - 1.
Page 296 16 April ’88 [ E ] [ ’ B ] - Common Procedure for Front and Rear Wires - NOTE: The running directions for the front and rear wires are opposite. Loosen the wire tightener [A] (1 screw). Insert the bead [B] (unmarked) into the rear slot of the drive pulley. Loop the wire around the drive pulley [C], as shown (one and a half turns).
Page 297: Traydown Sensor And Positioning Switch Replacement
16 April ’88 2. Tray Down Sensor and Positioning Switch Replacement [ E l [ G ] 1. Open the side cover (1 screw). 2. Remove the top cover and rear cover (5 screws). 3. Remove the sensor bracket [A] (2 screws). (There is no need to discon- nect the sensor connector.) 4.
Page 298 16 April ’88 7. Raise the lift rods [A]. 8. Remove the front inner cover [B] (1 short and 1 long screw). 9. Replace the tray down sensor [C] (1 screw and 1 connector). 10. Rotate the paper size dial to a smaller size, such as A4R, and remove the positioning switch bracket [D] (1 screw).
Page 299: Paper Size Sensor Replacement
16 April ’88 3. Paper Size Sensor Replacement 1. Do steps 1 to 8 of the tray down sensor and positioning switch replace- ment procedure. Remove the front guide post [A] (1 screw and 1 hook). 3. Remove the paper size sensor bracket [B] (1 screw). 4.
Page 300: Side Registration Adjustment
16 April ’88 4. Side Registration Adjustment NOTE: Do not move the paper size dial while performing this adjustment. Do steps 1 to 8 of the tray down sensor replacement procedure. Loosen the 2 screws securing the pinion bracket [A]. Loosen the screw securing the guide post lock plate [B].
Page 301 SECTION 10 EDITOR BOARD...
Page 302 CONTENTS...
Page 303: Unpacking And Installation
3. NECR Envelope (115V only) Operation Instructions (115V - English Five languages) only. 220/240V - 5. stylus 6. Cover Plate (FT4430 only) 7. Ferrite Core (220/240V only) only) Lock Plate (220/240V 9. Clamp 10. Multilingual Decal (220/240V only) 11. Pan Head Screw (M4 x...
Page 304 16 April ’88 2. Installation Set for RE 11 The installation set is required when using the editor as a pressure plate. Open the box and check the parts according to following list: Pressure Sheet Left Hinge Right Hinge Pan Head Screw (M4 x 12) Harness Clamp Hinge Bracket (FT5560, - 115V only) Mounting Stud (FT5560.
Page 305 16 April ’88 3. Installation Procedure ‘\ NOTE: - This preparation is only necessary for this copier. - As this copier does not have either the Shift Image-function or the Centering functions, the following procedure prevents the buzzer from sounding if the user mistakenly pushes the Shift Image key or Centering key with the stylus.
Page 306 16 April ’88 4. Installation Procedure on a Table [ c l NOTE: This procedure is required if the ADF or platen cover is already installed on the machine. 1. Turn the stylus harness [A] twice around the ferrite core [B] as shown in the figure.
Page 307 16 April ’88 5. Remove the rear cover [A]. 6. Connect the editor connector (8 pin) [B] through the docking hole [C] of the DF. NOTE: If the platen cover is installed on the machine, the connector should be connected through the cutout in the docking hole cap as shown on page 10-8.
Page 308 16 April ’88 5. Installation Procedure on the Machine 1 Remove the platen cover [A] from the machine. 2. Remove the platen cover hinge bracket [B] from the platen cover. 3. Remove the feet [C] from the editor (4 screws). 1 0 - 6...
Page 309 16 April ’88 [ D ] [ B ] [ E ] [ c l [ B ] [ D ] 4. Install the clamps [A] on the editor as shown in the figure. 5. Turn the stylus harness [B] twice around the ferrite core [C]. NOTE: Step 5 is only required for European machines.
Page 310 16 April ’88 [ c l [ D ] 9. Install the left hinge [A] and right hinge [B] on the editor (6 screws each). 10. Install the hinge bracket [C] on the hinges (2 screws). NOTE: Use the screws which secure the platen cover to the copier. 11.
Page 311 16 April ’88 14 . Clamp the editor harness [A] to the main board bracket with the nylon wire clamp [B], then reinstall the rear cover. Install the editor on the copier. 16 . Put the pressure sheet [C] on the exposure glass so as to align the image area indicators.
Page 312: Troubleshooting
SECTION 11 TROUBLESHOOTING...
Page 313 TROUBLESHOOTING ........11-1 1. Lines 80 mm Apart ..........11-5 2.
Page 314 LIGHT COPY ............11-16 PAPER CREASING .
Page 315: Copy Quality
16 April ’88 COPY QUALITY WHITE SPOTS Firefly Spots - Possible Causes - + Developer too old + Insufficient toner in developer + Dirty seals around development unit - Action - Is there a small black spot in the center of the white spot? Check and adjust the doctor gap (0.90 mm).
Page 316 16 April ’88 3. Dirty Background Around White Spots - Possible Causes - + Condensation on the drum due to rapid temperature change. This phenomenon may occur early on winter mornings. - Action - The problem should disappear after about 20 copies. it does not, perform drum conditioning.
Page 317 16 April ’88 BLANK AREA OR PATCHY IMAGE Possible Causes - .+ Uneven PTL, transfer, or separation coronas. - Action - Are the PTL, transfer, and separation corona wires improperly installed? Clean the PTL, transfer, and separation corona wires and adjust the corona currents.
Page 318 16 April ’88 JITTER - Possible Causes - drive + vibration m e c h a n i s m + Scanner not moving smoothly - Action - Does jitter appear on the leading edge of copies? Does the interval of jitter change when making reduced copies? Check the main drive belt.
Page 319: Lines 80 Mm Apart
16 April ’88 HOLLOWING OUT 1• Center of Solid Black Areas is Hollow - Possible Causes - + Damp paper Incorrect transfer or separation corona current - Action - Is the paper damp? Replace the damp paper with fresh paper. VERTICAL WHITE LINES OR BANDS 1•...
Page 320: Straight Sharp Lines
16 April ’88 2. Straight Sharp Lines - Possible Causes - + Drum Scratched + Cleaning blade damaged + Cleaning brush worn + Hot roller scratched + Hot roller strippers worn - Action - Start a copy cycle and stop it before the copy reaches the fusing unit. Do the same lines exist on the unfused copy? If the surface of the hot roller is scratched, which part is scratching the hot roller surface?
Page 321: Fuzzy Lines Or Bands
16 Aprit ’88 3. Fuzzy Lines or Bands - Possible Causes - Dirty corona wire - Action - Clean the charge, transfer, and PTL. UNEVEN DENSITY Changes Across The Copy - Possible Causes - Charge corona wire height not even + Charge corona wire dirty + Doctor gap not even - Action -...
Page 322: Uneven Density Appears Ln Bands
16 April ’88 Is the exposure lamp stained black? Correct uneven exposure using the adjusting plates. Replace the exposure lamp. Clean them. 2. Uneven Density Appears in Bands. - Possible Causes - + Exposure lamp misaligned + Dirty quenching lamp + Dirty corona wire incorrect current...
Page 323: Abnormal Image Density
16 April ’88 ABNORMAL IMAGE DENSITY 1. Image Density Is Too High Or Too Low - Possible Causes - charge + Incorrect corona current malfunction + ID sensor - Action - Check the output voltage of the ID sensor using SP Mode # 55. Is the volt- age correct? Adjust the voltage so that it is within standard.
Page 324: 2; Dotted Linesorbands
16 April ’88 Correct or replace any defective parts and check operation again. Is the edge of the cleaning blade deformed? Slightly increase the cleaning pressure. Replace the cleaning blade. 2. Dotted Lines or Bands - Possible Causes - + Pick-off pawl mechanism malfunction + scratched drum - Action - Do the pick-off pawls swing properly?
Page 325: Straight Linesorbands
16 April ’88 3. Line or Band Appears at The Rear Edge of The Copy (A3 or 11“ x 17’) - Possible Cause - + Toner shield glass miscounted Action - Set the toner shield glass properly. Straight Lines Or Bands - Possible Causes - + Hot roller Scratched + Insufficient Silicone oil...
Page 326: Lines At Irregular Intervals
16 April ’88 5. Lines at Irregular Intervals - Possible Causes - Deformed cleaning blade scraper + Toner clogged in cleaning unit - Action - Is toner clogged in the cleaning unit? Check the cleaning blade scraper. Correct or replace any defective parts. Clean the cleaning unit.
Page 327: Dirty Background
16 April ’88 DIRTY BACKGROUND Dirty Background on Entire Copy Image - Possible Causes - Dirty corona wire Toner supply clutch malfunction Incorrect lamp regulator output Dirty drum and bias thermistors Inefficient drum cleaning Incorrect corona current Drum worn out - Action - Note: When the problem occurs after the drum conditioning, make several white copies or cycle the development unit for 2 minutes using free run.
Page 328 16 April ’88 Check and adjust the charge corona current. Clean or replace the cleaning brush. ; Clean the edge of the cleaning blade. ) Check that the of the blade scraper is straight and that its movement edge is smooth. If not, correct or replace any defective parts. If the problem still exists, one of the following should solve it: } Replace the cleaning blade.
Page 329: Blank Copy
April ’88 BLANK COPY Possible Causes Charge corona wire miscounted or broken Defective power pack + Defective main board - Action - Is there a faint image? Is the charge corona wire (or unit) incorrectly instaIled? Does the main board output the correct signal to the power pack (CN206-A22 drops from +24 volts to ground)? Replace the main board.
Page 330: Light Copy
16 April ’88 LIGHT COPY Possible Causes - Development bias not applied or defective bias power pack Defective main board Defective dc power supply - Action - Does the image density change with ID selection? Is the development bias applied? Does the bias power pack receive the proper trigger signal from the main board? Replace the main board.
Page 331: Paper Creasing
16 April ’88 PAPER CREASING - Possible Causes - If thin copy paper is used, the leading edge may not set correctly between the fusing rollers, resulting in creased copies. + Paper curl - Action - Is thin paper used frequently? Move the fusing entrance guide to the upper position.
Page 332: Service Call Conditions
16 April ’88 SERVICE CALL CONDITIONS 11 EXPOSURE LAMP MALFUNCTION - Possible Causes - Exposure lamp turns on while in standby condition. Exposure lamp circuit open (lamp filament broken). + Cooling fan malfunction. - Action - Does the cooling fan work? Check the cooling fan circuit.
Page 333: Scanner Home Position Sensor Noton
16 April ’88 21 SCANNER HOME POSITION SENSOR NOT ON - Possible Causes - + scanner does not move to home position at power on. + Home position sensor failure. - Action - Move the scanner away from the home position. Turn the main switch off and on.
Page 334: No Registration Start Signal
16 April ’88 23 NO REGISTRATION START SIGNAL Possible Causes - + Optics control circuit failure (no registration signal) - Action - Replace the main board. If the problem still exists, check the scanner drive motor. 24 NO SCANNER HOME POSITION SIGNAL - Possible Causes - + Scanner does not return to home position within 20 seconds after scanner start.
Page 335: Lens Home Position Sensor Not On
16 April ’88 28 LENS HOME POSITION SENSOR NOT ON - Possible Causes - + Lens does not move properly. + Lens home position sensor failure. - Action - Does the lens move smoothly? Check/repair the Iens drive mechanism. Test the lens home position sensor. (Does CNI 01 -B3 stay LOW?) Replace it if defective.
Page 336: 2Nd Scanner Home Position Sensornoton
16 April ’88 2A 2ND SCANNER HOME POSITION SENSOR NOT ON - Possible Causes - + Second scanner drive doesn’t work properly. + Second scanner home position sensor failure. - Action - Check the action of the second scanner drive mechanism. Does it move cor- rectly? Check/repair the drive mechanism.
Page 337: Scanner Motor Too Fast
16 April ’88 2C SCANNER MOTOR TOO FAST = Possible Causes - + Scanner motor control circuit failure. - Action - + Replace the main board. 2D SCANNER MOTOR TOO SLOW - Possible Causes - + Scanner motor control circuit failure. - Action - Replace the main board.
Page 338: Image Density Sensor
16 April ’88 32 IMAGE DENSITY SENSOR - Possible Causes - + PTL not set. + Dirty ID sensor. + ID sensor circuit failure. - Action - Clean the ID sensor and reset the PTL unit. Adjust Vsg using VR201 on the main board. Vsg should be 4.0 * 0.2 volts. If the problem still exists, check the input at CN203-5.
Page 339: Fusing Warm-Up Failure
16 April ’88 54 FUSING WARM-UP FAILURE Possible Causes Fusing lamp blown. + Thermistor circuit open. Action - SC 54 turns on if the hot roller does not reach 150°C within 8 minutes after the power relay turns on. Is the fusing ‘ lamp mamem ‘...
Page 340: Fusing Temperaturetoo Low
16 April ’88 56 FUSING TEMPERATURE TOO LOW - Possible Causes - + Fusing lamp blown. + Thermistor failure. - Action - SC 56 turns on if the hot roller temperature drops below 150”C after warmup is complete. Is the fusing lamp blown? Replace the thermistor.
Page 341: Total Counter Malfunction
16 April ’88 91 TOTAL COUNTER MALFUNCTION - Possible Causes - + Total counter does not cycle. - Action - Is + 5 V supplied at CNI03-5? Replace the operation panel. Is +24 V supplied at CN103-4? Is there +24 V at CNI03-3 of the main board? Check the Vaa power supply.
Page 342: Ldsensor Abnormal (Nosc Number)
16 April ’88 ID SENSOR ABNORMAL (no SC number) - Possible Causes - + Difly ID sensor or ID sensor faiiure. - Action - If Vsg becomes less than volts, the SC indicator lights but no number is displayed. The copier shifts to fixed toner supply mode. Clean the ID sensor.
Page 343: Defective Sensor Table
16 April ’88 DEFECTIVE SENSOR TABLE Problem No 8 Name Condition Lights SC NO. 29 when the main S1 Lens Home Position Open switch is turned on. Short Lights SC No. when the main switch is turned on. Lights SC No. 61 during the copy S2 Pulse Generator Open cycle.
Page 344 RICOH FT4430 (A024) P A R T S C A T A L O G RICOH COMPANY, LTD. First Edition April 1988...
Page 345 PARTS CATALOG INTRODUCTION This chapter instructs you the numbers and names of this parts on this machine, INDEX to PARTS CATALOG Copier (A024) 15 . Paper Exit (A024) .......30 Exterior (A024) .
Page 346 April 30, ’88 1. EXTERIOR (A024)
Page 347 1. EXTERIOR (A024) April 30, ’88 Index Index Q’ty Per Q’ty Per Part No. Part No. Description Assembly Assembly AF04 3001 5054 0440 Receiving Tray A008 1307 A024 1306 Cap - Cover - Left - Sorter A024 1305 5211 1374 Cap - Left Cover - L AA00 1035 5211 1375...
Page 348 Q’ty Per Index Part No. Assembly 0314 0080W 0434 0060W 0434 0080W 0720 0050E 0802 5085 0802 5086 0802 5094 0964 4008W 0965 3006W 0344 0060W/...
Page 349 2. REGISTRATION (A024) April 30, ’88...
Page 350 REGISTRATION (A024) April 30, ’88 Index Index Q’ty Per Q’ty Per Part No. Description Part No. Assembly Assembly AX50 0017 PTL/ID Sensor Board 0314 0060W A009 2771 PTL Guide 0434 0080W A009 5253 Regist Sensor Board 0575 0060E A008 2284 Paper Guide 0720 0040E...
Page 351 3. PLATEN COVER AND CASSETTE (A024) April 30, ’88...
Page 352 3. PLATEN COVER AND CASSETTE (A024) April 30, ’88 1ndex Q ’ t y P e r Index Q ’ t y P e r Part No. Description P a r t N o . D e s c r i p t i o n Assembly Assembly 5211 2800...
Page 353 4. PAPER FEED (A024) April 30, ’88...
Page 354 4. PAPER FEED (A024) April 30, ’88 Index Q’ty Per Index Q’ty Per Part No. Description Part No. Description Assembly Assembly A024 2580 Shaft - Lower Paper Feed A008 2602 Upper Guide Plate A008 2656 Lower Lift Arm 5403 2075 Stepped Screw A024 2577 Lower Rear Arm...
Page 355 Q’ty Per Index Index Q’ty Per Part No. D e s c r i p t i o n Part No. Description Assembly Assembly AA14 0041 Shaft A008 2664 Pressure Arm 0313 0060W Philips Pan Head Screw - M3x6 0313 0120W Philips Pan Head Screw - M3x12 0314 0060W Philips Pan Head Screw - M4x6...
Page 356 4. PAPER FEED (A024) April 30, ’88 Index Q’ty Per Index Q’ty Per Part No. Part No. Description Description Assembly Assembly A024 2580 S h a f t - Lower Paper Feed A008 2602 Upper Guide Plate 5403 2075 A008 2656 Lower Lift Arm Stepped Screw A024 2577...
Page 357 April 30, ’88 5. OPERATION PANEL (A024)
Page 358 5. OPERATION PANEL (A024) April 30, ’88 Index Q ’ t y P e r Index Q ’ t y P e r P a r t N o . P a r t N o . D e s c r i p t i o n D e s c r i p t i o n Assembly Assembly...
Page 359 6. FRAME (A024) April 30, ’88...
Page 360 6. FRAME (A024) April 30, ’88 Index Index Q ’ t y P e r Q’ty Per Part No. Part No. Description Description Assembly Assembly 0324 0080W Philips Sunken Head Screw - M4x8 A009 1363 Right Cover Bracket 0584 0160B Hexagon Bolt - M4x16 5403 2075 Stepped Screw...
Page 361 7. OPTICS 1 (A024) April 30, ’88...
Page 362 April 30, ’88 OPTICS 1 (AO24) Q’ty Per Index Index P e r Q’ty Part No. P a r t N o . D e s c r i p t i o n Description Assembly Assembly 5211 7452 0314 0100W Philips Pan Head Screw - M4xI0 Front Guide - Lens Bracket - 141% 0434 0060W...
Page 363 8. OPTICS 2 (A024) April 30, ’88...
Page 364 April 30, ’88 8. OPTICS 2 (A024) Index P e r Q ’ t y Index Q ’ t y P e r P a r t N o . D e s c r i p t i o n P a r t N o .
Page 365 9. AROUND DRUM (A024) April 30, ’88...
Page 366 April 30, ’88 9. AROUND DRUM (A024) Q’ty Per Index Q’ty Per Index Part No. Description Assembly Part No. Description Assembly Selenium Drum 5442 9510 AX50 0014 Quenching Lamp - DC24V/3.6W ADO1 5001 Drum Shaft Main Corona Unit AD00 4010 5447 2286 Drum Guide AD02 3013...
Page 367 Index Q’ty Per 1ndex Q’ty Per Part No. Description Part No. Description Assembly Assembly 0314 0050W Philips Pan Head Screw - M4x5 0314 0060M Philips Pan Head Screw - M4x6 0314 0080W Philips Pan Head Screw - M4x8 0314 0120W Philips Pan Head Screw - M4x12 0324 0080W Philips Sunken Head Screw - M4x8...
Page 368 April 30, ’88 CLEANING UNIT (A024)
Page 369 April 30, ’88 10. CLEANING UNIT (A024) P e r Index Q ’ t y Q’ty Per Index Part No. Description Part No. Description Assembly Assembly A009 3680 Sheel - 19x36x10mm A024 3550 Cleaning Unit 5215 3596 Pick-off Pawl A024 3551 Cleaning Unit Casing 5205 3975 A009 3585...
Page 370 11. DEVELOPMENT UNIT (A024) April 30, ’88...
Page 371 April 30, ’88 11. DEVELOPMENT UNIT (A024) Q’ty Per Index Q’ty Per 1ndex Description Part No. Assembly Part No. Description Assembly 5215 3115 Gear - 17T AD00 1016 Development Unit Gear - 23T 5447 3236 S e a l - Entrance 5215 3193 5215 3281 5215 3191...
Page 372 Index Q’ty Per Part No. Description Assembly 0313 0060W Philips Pan Head Screw - M3x6 0314 0060W Philips Pan Head Screw - M4x6 0314 0l00W Philips Pan Head Screw - M4x1O 0314 0200W Philips Pan Head Screw - M4x20 0720 0025E Retaining Ring - M2.5 0720 0050E Retaining Ring - N5...
Page 373 April 30, ’88...
Page 374 DRIVE SECTION (A024) April 30, ’88 Index Index Q’ty Per Q’ty P e r Part No. P a r t N o . Description D e s c r i p t i o n Assembly Assembly A024 2593 Sprocket - 30T 5447 3361 Toner Supply Solenoid 5215 3872...
Page 375 13. PAPER TRANSPORT (A024) April 30, ’88...
Page 376 13. PAPER TRANSPORT (A024) April 30, ’88 Index Index Q’ty Per Q’ty Per Part No. Description Part No. Description Assembly Assembly AG06 1007 Front Cover Angle A009 2156 Inlet Duct 5442 3664 Toner Collection Bottle Cap - Small A009 6001 Harness - Toner Overflow Sensor 5215 2066 Fan Cover...
Page 377 14. FUSING UNIT (A024) April 30, ’88...
Page 378 April 30, ’88 14. FUSING UNIT (A024) Q ’ t y P e r Index Q ’ t y P e r Index Part No. D e s c r i p t i o n Part No. D e s c r i p t i o n Assembly Assembly A008 4097...
Page 379 Q’ty Per Index P e r Q ’ t y D e s c r i p t i o n P a r t N o . Assembly D e s c r i p t i o n P a r t N o Assembly Philips Pan Head Screw - M3x6...
Page 380 15. PAPER EXIT (A024) April 30, ’88...
Page 381 15. PAPER EXIT (A024) April 30, ’88 Index Q’ty Per Index Part No. Description Part No. Description Assembly 0434 0080W Tapping Screw - M4x8 5215 4497 0720 0030E Retaining Ring - M3 1009 4318 0720 0040E Retaining Ring - M4 A009 6615 0964 4008W Tapping Screw With Flat Washer - M4x8...
Page 382 ELECTRICAL SECTION 1 (A024) April 30, ’88...
Page 383 16. ELECTRICAL SECTION 1 (A024) April 30, ’88 Index Index Q’ty Per Q’ty Per Part No. Part No. Description Description Assembly Assembly AZ32 0018 Tapping Screw - M 4 x 8 Power Pack - C & B 0434 0080W A024 6013 DC Main Harness - 115V 0951 4008W Philips Screw With Flat Washer - M4x8...
Page 384 17. ELECTRICAL SECTION 2 (A024) April 30, ’88...
Page 385 17. ELECTRICAL SECTION 2 (A024) April 30, ’88 Index Q’ty Per Q’ty Per Part No. Description Part No. Description Assembly Assembly 0313 0120W Philips Pan Head Screw - M3x12 A024 6014 0314 0080M Philips Pan Head Screw - M4x8 A024 6016 0434 0080W Tapping Screw - M4x8 5439 5246...
Page 386 INDEX SYMBOL...
Page 388 18. MAIN BOARD (A024) April 30, ’88 Index Q’ty Per Q’ty Per Index Part No. Description Part No. Description Assembly Assembly 1102 2802 Spring Header - SOP A024 5313C Main Control Board 1102 2803 Spring Header - 40P A024 5303 IC - UPD7811G 1102 2805 Spring Header - 30P...
Page 389 Index Q’ty Per Index Q’ty Per Part No. Part No. Description Description Assembly Assembly 1503 0270 O s c i l l a t o r - KHL85OOA:1OMHZ 1601 8428 R e s i s t o r - 2KQ 0.3T 1604 1354 Capacitor - IOO~F 10V 1604 1363...
Page 390 30, ’88 19. FUSING LAMP DRIVE BOARD (A024) April...
Page 391 April 30, ’88 LAMP DRIVE BOARD (A024) FUSING Index Q’ty Per Index Q ’ t y P e r Part No. Description P a r t N o . D e s c r i p t i o n Assembly Assembly 1606 0689...
Page 392 April 30, ’88 (A024) POWER RELAY BOARD CONNECTOR DIODE RESISTOR RESISTOR ARRAY SYMBOL INDEX SYMBOL INDEX 1 SYMBOL INDEX ch3 f...
Page 393 POWER RELAY BOARD (A024) Index Q’ty Per Index Q’ty Per Part No. Description Part No. Description Assembly Assembly 1102 2227 Spring Header - 4P A009 5125 Power Relay Board 1102 1172 EI Connector - 4 P 1103 1591 Connector - 2P 1402 0467 Diode - S5566G 1600 1292...
Page 394 21. PAPER FEED CONTROL BOARD (A024) April 30, ’88 CONNECTOR DIODE FUSE RESISTOR ARRAY — SYMBOL INDEX SYMBOL INDEX SYMBOL INDEX SYMBOL INDEX SYMBOL INDEX CN220 D220 D230 RAY220 CN221 D221 D231 CN222 D222 D232 CN223 D223 D233 CN224 D224 D234 CN225 D225...
Page 395 21. PAPER FEED CONTROL BOARD (A024) Index Index Q’ty Per Q’ty Per Part No. Part No. Description Assembly Assembly 1102 2117 A024 5250 Paper Feed Control Board 1102 2118 1102 2806 1103 0781 1103 1725 1103 1726 1103 1729 1107 0321 1401 0611 1402 0388 1601 7508...
Page 396 April 30, ’88 22. AC MAIN HARNES (A024)
Page 397 22. AC MAIN HARNESS (A024) April 30, ’88 Index Q’ty Per Q ’ t y P e r Part No. P a r t N o . Description D e s c r i p t i o n Assembly Assembly A024 6011 1100 1042...
Page 398 23. DC MAIN HARNESS (A024)
Page 399 April 30, ’88 23. DC MAIN HARNESS (A024) Q’ty Per Index Index Q’ty Per Part No. Description Part No. Description Assembly Assembly 1102 1509 Connector – 4 P A024 6013 DC Main Harness - 115V 1102 1510 Connector - 6P A024 6015 DC Main Harness - 220V 1102 1511...
Page 400 24. FUSING UNIT HARNESS (A024) April 30, ’88...
Page 401 April 30, ’88 24. FUSING UNIT HARNESS (A024) Index Index Q’ty Per Q’ty Per Part No. Description Part No. Description Assembly Assembly 1102 1620 Connector - 3P A009 6031 Fusing Unit Harness 1102 1910 Connector - 2P A009 5431 Thermofuse Ass’y 1102 2099 Connector - 12P 1100 1249...
Page 402 25. COUNTER HARNESS (A024)
Page 403 25. COUNTER HARNESS (A024) Index Index Q’ty Per Q’ty Per Part No. Part No. Description Description Assembly Assembly 1103 1345 A024 6014 Counter Harness - 115V Connector - 14P A024 6016 1102 1509 Connector - 4P Counter Harness – 220V 5408 5160A 1100 1240 Socket - Mate-N-Lock...
Page 404 25. COUNTER HARNESS (A024) Index Index Q’ty Per Q’ty Per Part No. Part No. Description Description Assembly Assembly 1103 1345 A024 6014 Counter Harness - 115V Connector - 14P A024 6016 1102 1509 Connector - 4P Counter Harness – 220V 5408 5160A 1100 1240 Socket - Mate-N-Lock...
Page 405 26. HARNESS PAPER FEED (A024)
Page 406 HARNESS PAPER FEED (A024) 1ndex Q ' t y P e r Index Q’ty Per P a r t N o . Part No. D e s c r i p t i o n Description Assembly Assembly 1102 1915 Connector - 7P A009 5270 Harness - Paper Feed...
Page 407 27. SPECIAL TOOL (A024) April 30, ’88...
Page 408 27. SPECIAL TOOL (A024) April 30, ’88 Index O ’ t y P e r P a r t N o . D e s c r i p t i o n Assembly Gauge (2pcs/set) 5215 9500 5205 9601 Switching Board 5205 9101 Gap Gauge...
Page 409 28. DECAL AND DOCUMENT April 30, ’88...
Page 410 WARNING HIGH TEMP.
Page 411 April 30, ’88 28. DECAL AND DOCUMENT Index Q’ty Per Q’ty Per Index Part No. Description Part No. Description Assembly Assembly A024 8604 Operating Instructions - Spanish AA00 0008 Decal - A2 A024 8610 Installation Procedure - English A024 1385 Front Cover Decal - English A02L 8615 I n s t a l l a t i o n P r o c e d u r e - 5 Languages...
Page 412 DF-39 (A419)
Page 413 1. Document Feeder l (A419) ... . 2 2. Document Feeder II (A419) ....4 3. Document Feeder III (A419) ... 6 4.
Page 414 1. DOCUMENT FEEDER I (A419) April 30, ’88...
Page 415 A419 3981 5918 3225 Brake Plate Bracket A419 3986 Deca1 - Misfeed Removal - Multi 5894 3219 Left Spring Holder Language (Ricoh Only) 5918 3210 Right Brake Plate 5894 3215 Brake Stopper 5875 5510 Shoulder Screw - M5 5918 3230...
Page 416 Index Index Q’ty Per Q’ty Per, Part No. Part No. Description Description Assembly Assembly 5918 3160 Spring 0343 0060W Right Bracket - Torsion Philips Pan Head Screw - M 3 x 6 5918 3250 0313 0160W Philips Pan Head Screw - Torsion Spring - l.0mm M3x16 X/)(...
Page 417 2. DOCUMENT FEEDER II (A419) April 30, ’88...
Page 418 April 30, ’88 (A419) DOCUMENT FEEDER II Q’ty Per Index Q’ty Per Index Part No. Description Part No. Description Assembly Assembly Pick-up Lever 5918 2371 5918 2155 Registration Roller 5894 2176 Spring - Detent Arm 5918 5631 Paper Size Sensor Spring - Original Stopper 5894 2293 5918 5722...
Page 419 Index Index ()’ty Per Q’ty Per Part No. Part No. Description Description Assembly Assembly 0313 0060W Philips Pan Head Screw - M3x6 5403 2049 Spring Anchor 0314 0060W Philips Pan Head Screw - M4x6 A419 3355 Right Frame 0313 0040W Philips Pan Head Screw - M 3 x 4 MB 1 0805 3145...
Page 420 3. DOCUMENT FEEDER Ill (A419) April 30, ’88...
Page 421 April 30, ’88 3. DOCUMENT FEEDER Ill (A419) P e r Index Q’ty Q’ty Per Part No. Index D e s c r i p t i o n Assembly Description Part No. Assembly 5918 2307 Spring - Drive Motor Tension 5918 3563 Left Frame Main Harness...
Page 422 Index Q’ty Per Index Q’ty Per Part No. Description Part No. Description Assembly Assembly 0343 0060W Philips Pan Head Screw - M3x6 0313 0040W Philips Pan Head Screw - M3x4 0314 0060W Philips Pan Head Screw - M4x6 0314 0080W Philips Pan Head Screw - M4x8 0314 0l00W Philips Pan Head Screw - M4x1O...
Page 423 4. DF MAIN BOARD (A419) April 30, ’88 CAPACITOR RESISTOR SYMBOL SYMBOL INDEX SY!4B01 SYMB0L INDEX SYMBOL INDEX SYMBOL INDEX SYMBOL INOEX INDEX SYMBOL INDEXX SYMBOL INOEX !40. C101 C112 C122 C132 C144 R101 Rlll R121 R131 C133 R102 C102 C113 C123 C145...
Page 424 April 30, ’88 4. DF MAIN BOARD (A419) Index Q ’ t y P e r Index Q ’ t y P e r P a r t N o . D e s c r i p t i o n P a r t N o .
Page 425 April 30, ’88 DF HARNESS (A419)
Page 426 5. DF HARNESS (A419) April 30, ’88 Index P e r Index Q ’ t y Q’ty Per Part No. Description Part No. Description Assembly Assembly 1100 1089 Socket - Mate-N-Lock 5918 5811 Main Harness Socket - Mate-N-Lock 1100 1147 1100 1159 Socket - Mate-N-Lock 1100 1169...
Page 427 CS-2070 (A414)
Page 428 1. Mini Sorter (A414) ..... . 2 2. Bin Motor Board (A414) ....4 3.
Page 429 1. MINI SORTER (A414) April 30, ’88...
Page 430 April 30, ’88 1. MINI SORTER (A414) Q ’ t y P e r Index Q’ty Per Index P a r t N o . D e s c r i p t i o n Assembly Part No. Description Assembly Drive Pulley 6803 2415...
Page 431 Q’ty Per Index Q’ty Per Index Part No. Description Part No. Description Assembly Assembly 0344 0080D Philips Truss Head Screw - M4x8 Philips Pan Head Screw - M4x6 0314 0060W 1105 0162 Locking Support 1204 1318 Microswitch 1313 0140W Philips Pan Head Screw - M3x14 0434 0080W Tapping Screw - M4x8 Philips Pan Head Screw - M4x8...
Page 432 2. BIN MOTOR BOARD (A414) CONNECTOR DIODE SYMBOL INDEX SYMBOL INDEX SYMBOL INDEX CN1O1 D101 SSR101 CN102 D102 SSR102 CN103 CN104...
Page 433 April 30, ’88 3. SORTER HARNESS (A414) Q ’ t y P e r Index Index Q ’ t y P e r P a r t N o . D e s c r i p t i o n P a r t N o .
Page 434 RT-15 (A912)
Page 435 1. LCT I (A912) ......2 2. LCT II (A912) ......4 3.
Page 436 1. LCT I (A912) April 30, ’88...
Page 437 I n s t a l l a t i o n P r o c e d u r e - 5 Languages 0802 5094 Tapping Screw - M4x8 A912 4224 Multi - Lingual Decal - Ricoh 0314 0040W Philips Pan Head Screw - M4x4 0964 4008W...
Page 438 LCT II (A912)
Page 439 2. LCT II (A912) April 30, ’88 Index Index Q’ty Per Q ’ t y P e r Part No. P a r t N o . Description D e s c r i p t i o n Assembly Assembly 5205 5250 A912 2573...
Page 440 3. LCT Ill (A912) April 30, ’88...
Page 441 2. BIN MOTOR BOARD (A414) Index Index Q’ty Per Q’ty Per Part No. Description Part No. Description Assembly Assembly 1102 0995 Connector - 2P 6803 5500 Bin Motor Board 1102 1194 Pin Connector - 3P 1103 1695 Connector - 15P Connector - 12P 1103 1748 1208 1024...
Page 442 3. SORTER HARNESS (A414) April 30, ’88...
Page 443 3. LCT Ill (A912) April 30, ’88 Index Index Q ’ t y P e r Q ’ t y P e r P a r t N o . P a r t N o . D e s c r i p t i o n D e s c r i p t i o n Assembly Assembly...
Page 444 Q’ty Per Index Part No. Description Assembly 0315 0080W Philips Pan Head Screw - M5x8 0314 Ol00W Philips Pan Head Screw - M4x1O 0314 O060W Philips Pan Head Screw - M4x6 0314 O050W Philips Pan Head Screw - M4x5 0434 0060W Tapping Screw - M4x6 0434 0080W Tapping Screw - M4x8...
Page 445 4. LCT BOARD (A912) April 30, ’88 CONNECTOR DIODE CAPACITOR RESISTOR INDEX SYMBOL INDEX SYMBOL INDEX SYMBOL INDEX SYMBOL INDEX SYMBOL INDEX SYMBOL 1NDEX SYMBOL 1NDEX CN1OO R1OO R11O R121 R131 D1OO Clll R133 D101 CN101 C113 R101 Rlll R122 CN102 C114 R102...
Page 446 4. LCT BOARD (A912) April 30, ’88 Index Q’ty Q’ty Part No. Description Part No. Description Assembly Assembly 1103 1247 Connector - 3P A912 5103 1103 1729 Connector - 7P Connector - 8P 1103 1730 1103 1739 Connector - 3P 1103 1743 Connector - 7P 1103 1757...
Page 447 April 30, ’88 5. LCT HARNESS (A912)
Page 448 5. LCT HARNESS (A912) April 30, ’88 Index Index Q’ty Per P a r t N o . Q ’ t y P e r D e s c r i p t i o n P a r t N o . D e s c r i p t i o n Assembly Assembly...
Page 449 RE-11 (A906)
Page 451 1. RE – 11 (A906) April 30, ’88 — 2 4 _ _ _...
Page 452 RE – 11 (A906) April 30, ’88 Index Index Q’ty Per Q ’ t y P e r P a r t N o . Part No. Description D e s c r i p t i o n Assembly Assembly Operating Instructions - English A906 1265...
Page 453 PARTS INDEX...
Page 454 Page and P a r t s N o . D e s c r i p t i o n Index No. A906 1252 Deca1 s t y l u s 3 - 4 3 - 2 3 A908 1302 Left Hinge Stylus Holder A906 1261...
Page 455 Page and Page and Parts No. Description Parts No. Description Index No. Index No. 0313 0080W Philips Pan Head Screw - M3x8 3-104 0314 0080W Philips Pan Head Screw - M 4 x 8 3-109 0413 0102B Tapping Screw - M3x1O 3-107 0413 0102W Tapping Screw - M3xlo ,...
Page 456 INTERFACE BOARD TYPE E (A426)
Page 457 1. interface Board (A426) ....2 Parts Index .........5...
Page 458 April 30, ’88 1. INTERFACE BOARD (A426) CAPACITOR CONNECTOR RESISTOR SYMBOL INDEX SYMBOL INDEX SYMBOL INDEX SYMBOL INDEX SYMBOL INDEX NO 8 IC101 C10l CN101 R101 Rlll IC102 C102 CN102 R102 R112 IC103 C103 R103 R113 IC104 C104 CN103 R114 R104 C105 CN104...
Page 459 1. INTERFACE BOARD (A426) April 30, ’88 I n d e x Q ’ t y P e r Index Q ’ t y P e r Part No. D e s c r i p t i o n P a r t N o .
Page 460 PARTS INDEX...
Page 461 Page and Page and P a r t s N o . D e s c r i p t i o n P a r t s N o . D e s c r i p t i o n Index No.
Page 462 SORTER ADAPTER TYPE E (A918)
Page 463 1. SORTER ADAPTER (A918) April 30, ’88...
Page 464 1. SORTER ADAPTER (A918) Index Index Q ’ t y P e r Q ’ t y P e r P a r t N o . D e s c r i p t i o n P a r t N o . D e s c r i p t i o n Assembly Assembly...
Page 465 16 April ’88 Name Condition Problem Paper always jams at the registration S10 Registration Open roller. Short Lights “Check Paper Path” indicator when the main switch is turned on. S11 Paper Exit Open Lights “Check Paper Path” indicator when the main switch is turned on. Short “Check Paper Path”...

Ricoh FT4430 Service Manual

Section 2

Optics

Development

Overview

Toner Density Detection and Toner Supply

Section 4

Test Points

DF Main Board

Variable Resisters

Dip Switches

Data Check Mode

Service Program Mode (Spmode) Operation

Service Program Modetable

Section 5

Optics

Quenching

Paper Feed

Manual Feed Sensor Replacement

Feed Pressure Adjustment

Fusing

Transport

Corona

Section 7

Feed-Out Mechanism

Lifting Mechanism

Section 8

Section 9

Section 11

Scanner Motor too Slow

Image Density Sensor

Fusing Thermistor Abnormal

Fusing Warm-Up Failure

Fusing Overheat

Fusing Temperaturetoo Low

OPTICS Emain COMMUNICATION FAILURE

Ldsensor ABNORMAL (Nosc Number)

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Summary of Contents for Ricoh FT4430