Page 1 SECTION 1 OVERALL MACHINE INFORMATION...
Page 2: Specifications
23 April 1993 SPECIFICATIONS 1. SPECIFICATIONS Configuration: Console Copy Process: Dry electrostatic transfer system Toner Supply Control: Fuzzy Control Photoconductor: OPC drum Originals: Sheet/Book Original Size: Maximum A3/11" x 17" Original Alignment: Left rear corner Copy Paper Size: Maximum A3/11" x 17" Minimum A5/5 "...
Page 3 SPECIFICATIONS 23 April 1993 Power Source: 115V, 60Hz, more than 20A (for N.A) 220 ~ 240V, 50Hz/60Hz, more than 10A (for EU and AA) Power Consumption: A095 and A096 copiers Copier only Full system* Warm-up 0.9 kVA 0.9 kVA Stand-by 0.25 kVA 0.25 kVA Copying...
Page 4 23 April 1993 SPECIFICATIONS Dimensions: 690 x 690 x 980 (W x D x H Mainframe only) 1280 x 690 x 1020 (W x D x H Mainframe with copy tray, platen cover) Weight: Copier only: (Without the optional platen cover = Approximately 2 kg) A095 copier: Approximately 151 kg...
Page 5 SPECIFICATIONS 23 April 1993 Toner Replenishment: 1,100 g/cartridge • Optional Equipment: Platen cover • Dual job feeder • Recirculating document handler • 20 bin sorter stapler (Floor type) • 20 bin compact sorter stapler • Finisher • 3500-sheet Large capacity tray •...
Page 6: Machine Configuration
23 April 1993 MACHINE CONFIGURATION 2. MACHINE CONFIGURATION 2.1 COPIER OVERVIEW There are two types of mainframe. A095 copier (3,500) A096 copier 500 x 2 or 500 (3,500) 1,500...
Page 7: System Overview
MACHINE CONFIGURATION 23 April 1993 2.2 SYSTEM OVERVIEW System A (The mainframe (A095) with dual job feeder and compact sorter stapler) Dual job feeder (A376) Compact sorter stapler (A374) 3,500-sheets large capacity tray (A380) System B (Mainframe type (A095/A096) with dual job feeder and floor type sorter stapler.
Page 8 23 April 1993 MACHINE CONFIGURATION System C (The mainframe (A096) with recirculating document handler and finisher) Recirculating document handler (A378) Finisher 3,500-sheets (A379) large capacity tray (A380)
Page 9: Copy Process Around The Drum
COPY PROCESS AROUND THE DRUM 23 April 1993 3. COPY PROCESS AROUND THE DRUM 1. OPC DRUM The organic photo conductive (OPC) drum (100 mm diameter) has high resistance in the dark and low resistance under light. 2. DRUM CHARGE In the dark, the charge corona unit gives a uniform negative charge to the OPC drum.
Page 10 23 April 1993 COPY PROCESS AROUND THE DRUM 5. DRUM POTENTIAL SENSOR The drum potential sensor detects the electric potential on the drum to compensate image processing elements. 6. DEVELOPMENT Positively charged toner is attracted to the negatively charged areas of the drum, thus developing the latent image.
Page 11: Mechanical Component Layout
MECHANICAL COMPONENT LAYOUT 23 April 1993 4. MECHANICAL COMPONENT LAYOUT 1-10...
Page 12 23 April 1993 MECHANICAL COMPONENT LAYOUT 1. 3rd Mirror 21. Separation Roller 2. 2nd Mirror 22. Registration Rollers 3. 1st Mirror 23. Transfer Belt 4. Exposure Lamp 24. Vertical Transport Rollers 5. Lens 25. Tandem Tray (A096 copier) 550-sheet Tray (A095 copier) 6.
Page 13: Drive Layout
DRIVE LAYOUT 23 April 1993 5. DRIVE LAYOUT Main Motor 1. OPC Drum 2. Scanner Unit Scanner Drive Motor 3. Transfer Belt Unit Fusing/Duplex Drive Motor 4. Paper Exit Unit Paper Feed Motor 5. Fusing Unit Toner Collection Motor 6. Duplex Unit Registration Clutch 7.
Page 14: Paper Path
23 April 1993 PAPER PATH 6. PAPER PATH 6.1 STANDARD COPYING Paper feed begins from the exterior LCT, by-pass feed table or paper feed stations in the paper tray unit. The copy paper then follows one of two paths inside the copier. The path followed depends on which mode the operator has selected.
Page 15 PAPER PATH 23 April 1993 6.2 MULTIPLE 2-SIDED COPYING a. Front Side b. Rear Side In this mode the junction gate [A] directs sheets exiting the fusing unit to the duplex tray entrance. After that, all sheets follow the path through the duplex entrance rollers [B].
Page 16: Electrical Component Description
23 April 1993 ELECTRICAL COMPONENT DESCRIPTION 7. ELECTRICAL COMPONENT DESCRIPTION Refer to the electrical component layout on the reverse side of the attached Point to Point for symbols and index numbers. Symbol Name Function Index Motors Scanner Drive Drives the 1st and 2nd scanners (dc servo).
Page 17 ELECTRICAL COMPONENT DESCRIPTION 23 April 1993 Symbol Name Function Index 3rd Lift Raises the bottom plate in the 3rd (A095 copier only) paper tray. Side Fence Drive Opens and closes the front and (A096 copier only) the rear side fences of the tandem tray.
Page 18 23 April 1993 ELECTRICAL COMPONENT DESCRIPTION Symbol Name Function Index Switches By-pass Table Detects if the by-pass feed table is open or closed. Front Door Safety Cuts the ac power line and detects if the front door is open or not.
Page 19 ELECTRICAL COMPONENT DESCRIPTION 23 April 1993 Symbol Name Function Index SOL 6 Pressure Arm Presses the paper on the duplex tray against the duplex feed rollers. SOL 7 Tandem Lock Locks the left tandem feed tray and separates the right and left tandem trays.
Page 20 23 April 1993 ELECTRICAL COMPONENT DESCRIPTION Symbol Name Function Index Lens Vertical HP Informs the CPU that the lens is at the full-size position. Lens Horizontal HP Informs the CPU that the lens is at the horizontal home position. 3rd Scanner HP Informs the CPU when the 3rd scanner is at the home position.
Page 21 ELECTRICAL COMPONENT DESCRIPTION 23 April 1993 Symbol Name Function Index By-Pass Paper Size Informs the CPU what size paper is in the by-pass feed table. Toner Density Senses the amount of toner in the black developer. Registration Detects misfeeds and controls registration clutch off-on timing.
Page 22 23 April 1993 ELECTRICAL COMPONENT DESCRIPTION Symbol Name Function Index 3rd Paper Feed Controls the 3rd paper feed clutch off/on timing and the 3rd pick-up solenoid off timing. 2nd Paper Feed Controls the 2nd paper feed clutch off/on timing and the 2nd pick-up solenoid off timing.
Page 23 ELECTRICAL COMPONENT DESCRIPTION 23 April 1993 Symbol Name Function Index PCB 5 Paper Feed Control Controls all components in the paper bank. PCB 6 DC Power Supply Provides DC power. Unit PCB 7 Guidance Controls the guidance display. PCB 8 Operation Panel Controls the LED matrix, and monitors the key matrix.
Page 24 23 April 1993 ELECTRICAL COMPONENT DESCRIPTION Symbol Name Function Index Optics Thermistor Monitors the temperature of the optics cavity. Drum Thermistor Monitors the temperature of the (Located on the ID OPC drum. Sensor Ass’y) Transfer Turns on when the main switch is Anti-Condensation off to prevent moisture from forming on the transfer belt.
Page 25: Detailed Section Descriptions
SECTION 2 DETAILED SECTION DESCRIPTIONS...
Page 26: Process Control
23 April 1993 PROCESS CONTROL 1. PROCESS CONTROL 1.1 OVERVIEW Pattern Original Scale Image Density Control (Fuzzy Control) ADS Pattern Latent Image Control Pattern Pattern Pattern Original Exposure Glass Lamp Voltage Latent image Control Exposure Control Charge Control Grid Voltage Erase Lamp Drum Potential Sensor Toner Supply On time...
Page 27 PROCESS CONTROL 23 April 1993 1.1.1 Latent Image Control Exposure Charge Black White Erase Potential Sensor Drum The figure shows the changes of the drum potential during the copy process. The drum potential just after charging the drum. (Dark Potential): The drum potential just after exposing the black pattern (V pattern)
Page 28 23 April 1993 PROCESS CONTROL 1.1.2 Image Density Control Image density is controlled by the following sensors: Toner density sensor (TD sensor) Image density sensor (ID sensor) Data from the TD sensor is used to keep the toner concentration in the developer at a constant level.
Page 29 PROCESS CONTROL 23 April 1993 1.2 PROCESS CONTROL DATA INITIAL SETTING The following flow chart shows all the steps that will be performed whenever the machine is turned on while the hot roller temperature is below 100°C. This initializes all the process control settings. Main SW On (Fusing Temp.
Page 30 23 April 1993 PROCESS CONTROL 1.3 LATENT IMAGE CONTROL 1.3.1 Drum Potential Sensor Calibration Case Sensor Output Amp. Drum RA601 -100 V -800 V RA602 Main PCB The drum potential sensor [A] is located just above the development unit. The sensor has a detector which detects the strength of the electric field from the electric potential on the drum.
Page 31 PROCESS CONTROL 23 April 1993 1.3.2 Drum Conditioning When the fusing temperature reaches 180°C, the machine starts the drum conditioning process. In this mode, the main motor, main charge corona, erase lamp and development bias are activated for about 30 seconds and drum sensitivity and residual voltage (V ) are stabilized, as in continuous copy runs.
Page 32 23 April 1993 PROCESS CONTROL 1.3.5 V Correction [-V] Exposure Glass Drum Compensated Pattern Potential –770 After many copies New Drum Dark Original Density Light The drum potential just after the black pattern (V Pattern) is exposed (V Dark Potential) tends to lower during drum life due to a decrease in the drum’s capacity to carry a charge.
Page 33 PROCESS CONTROL 23 April 1993 1.3.6 V Correction [-V] Exposure Glass Only V Compensated Pattern Drum and V Potential Compensated New Drum –770 –140 Dark Original Density Light Dirty optics and/or exposure lamp deterioration decreases the intensity of the light that reaches the drum. In addition to this, the drum sensitivity also changes during the drum’s life.
Page 34 23 April 1993 PROCESS CONTROL 1.3.7 V Correction [-V] and V Compensated Drum Potential Development Bias (V New Drum –770 –140 Dark Light Original Density Potentials (V ) are monitored by the potential sensor. (This is done only when the fusing temperature is less than 100°C after the machine is turned on.) During the check cycle, the V and V...
Page 35 PROCESS CONTROL 23 April 1993 1.3.8 Initial Setting Sequence The following graph shows the sequence of events during process control data initial setting. Scanner forward Motor reverse for the purpose of ADS sensor correction Exposure Lamp New V New V Potential New V Sensor...
Page 36 23 April 1993 PROCESS CONTROL 3. V and V corrections Using the calculated V and V data, V and V patterns are GRID LAMP developed again and the new V , and V data are detected. If both V and V data are within specifications, the new V GRID LAMP...
Page 37: Image Density Control
PROCESS CONTROL 23 April 1993 1.4 IMAGE DENSITY CONTROL 1.4.1 Toner Density Sensor A: V (Gain data) is high. B: V is within the specification. low. C: V (Gain data) is Main PCB Sensor Output Sensor (12 V) Gain IN x Gain = 12 x New Developer...
Page 38 23 April 1993 PROCESS CONTROL By selecting the proper gain data, the sensor output is set within the targeted = 2.5 ± 0.1 V). Now, the sensor characteristic is control level (V illustrated by curve B and the TD sensor initial setting is completed. The selected gain data is stored in memory, and V from the auto gain control circuit stays constant during the toner sensor detection cycle.
Page 39 PROCESS CONTROL 23 April 1993 <Toner Supply Clutch on Time> To stabilize toner concentration, toner supply amount (toner supply clutch on time) is controlled by referring to V and V The toner supply amount is calculated at every copy. The toner supply amount is determined by using the following factors.
Page 40 23 April 1993 PROCESS CONTROL 1.4.2 Image Density Sensor Detection Drum bias and V are checked by the ID sensor [A]. The ID sensor is located underneath the drum cleaning section. There is no ID sensor pattern in the optics, however, a pattern image is made on the OPC drum by the charge corona unit [B] and the erase lamp [C].
Page 41 PROCESS CONTROL 23 April 1993 –700 V Potential Sensor Detection ID Sensor –300 Bias Level +300 (V) 4.0 V ID Sensor Output While developing the ID sensor pattern, ID sensor bias is applied. ID sensor bias is determined during process control data initial setting as follows: Apply charge while grid voltage is –700 V to create the ID sensor pattern.
Page 42 23 April 1993 PROCESS CONTROL 1.4.3 Sensor Abnormal Conditions a. ID sensor (V ) abnormal Whenever V falls under 2.5 V or V rises over 2.5 V, the CPU fixes the data and toner concentration is controlled only by using TD sensor output.
Page 43 DRUM UNIT 23 April 1993 2. DRUM UNIT 2.1 OVERVIEW 7. 8 The drum unit consists of the components as shown in the above illustration. An organic photoconductor drum (diameter: 100 mm) is used for this model. 1. OPC Drum 9.
Page 44: Opc Drum Characteristics
23 April 1993 DRUM UNIT 2.2 OPC DRUM CHARACTERISTICS An OPC has the characteristics of: 1. Being able to accept a high negative electrical charge in the dark. (The electrical resistance of a photoconductor is high in the absence of light.) 2.
Page 45: Drum Charge
DRUM UNIT 23 April 1993 2.3 DRUM CHARGE 2.3.1 Overview This copier uses a double corona wire scorotron system for drum charge. Two corona wires are required to give sufficient negative charge on the drum surface because of a rather high drum speed (330 mm/sec.). The stainless steel grid plate makes the corona charge uniform and controls the amount of negative charge on the drum surface by applying the negative grid bias voltage.
Page 46 23 April 1993 DRUM UNIT 2.3.2 Air Flow Around the Drum The exhaust fan [A] located above the fusing unit provides an air flow to the charge corona unit to prevent uneven built-up of negative ions that can cause an uneven charge of the drum surface as shown. An ozone filter [B] absorbs the ozone (O ) around the drum.
Page 47 DRUM UNIT 23 April 1993 2.3.3 Charge Wire Cleaning Mechanism The flow of air around the charge corona wire may deposit toner particles on the corona wires. These particles may interfere with charging and cause low density bands on copies. The wire cleaner pads [A] automatically clean the wires to prevent such a problem.
Page 48 23 April 1993 DRUM UNIT 2.4 ERASE 2.4.1 Overview 3.5 ± 2.5 mm : Lead edge erase margin : Side erase margin total of both sides 3 mm or less Lo: Original width Lc: Charged width of drum : Lead edge erase Es: Side erase The erase lamp unit consists of a line of 123 LEDs extending across the full width of the drum, the width of each being about 2.5 mm.
Page 49 DRUM UNIT 23 April 1993 2.4.2 Lead Edge and Trail 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 the original image on the drum (lead edge erase margin).
Page 50 23 April 1993 DRUM UNIT 2.5 CLEANING 2.5.1 Overview 4 mm This copier uses the counter blade system for drum cleaning. The blade [A] is angled against drum rotation. This counter blade system has the following advantages: • Less wearing of the cleaning blade edge. •...
Page 51 DRUM UNIT 23 April 1993 2.5.2 Drive Mechanism The drive force from the main motor is transmitted to the cleaning unit drive gear via the timing belt [A] and the cleaning unit coupling [B]. The cleaning unit drive gear [C] then transmits the force to the front side through the cleaning brush [D].
Page 52 23 April 1993 DRUM UNIT 2.5.3 Cleaning Blade Pressure Mechanism and Side-to-Side Movement The spring [A] always pushes the cleaning blade against the OPC drum. The cleaning blade pressure can be manually released by pushing up the release lever [B]. To prevent cleaning blade deformation during the transportation, the release lever is locked in the pressure release (upper) position.
Page 53 DRUM UNIT 23 April 1993 2.5.4 Toner Collection Mechanism Toner collected by the cleaning unit is transported to the toner collection bottle [A] through the toner collection tubes. Three helical coils are used for toner transport. One coil [B] is driven by the main motor via drive belts and the other coil [C] is driven by an independent toner collection drive motor [D].
Page 54 23 April 1993 DRUM UNIT 2.5.5 Pick-off mechanism The pick-off pawls are always in contact with the drum surface with weak spring pressure. They move side to side during the copy cycle. This movement is made via a shaft [A] and an eccentric cam [B]. 2.5.6 Toner Collection Bottle Set Detection The toner collection bottle set switch [C] prohibits machine operation by indicating SC343 while the toner collection bottle is not set.
Page 55 DRUM UNIT 23 April 1993 2.6 QUENCHING In preparation for the next copy cycle, light from the quenching lamp (QL) [A] neutralizes any charge remaining on the drum. The quenching lamp consists of a line of 16 LEDs extending across the full width of the drum.
Page 56 23 April 1993 OPTICS 3. OPTICS 3.1 OVERVIEW The optics unit reflects an image of the original on the exposure glass onto the OPC drum. This forms a latent electrical image of the original. On this model a halogen lamp (85 V 230 W) is used for the exposure lamp [A].
Page 57: Scanner Drive
OPTICS 23 April 1993 3.2 SCANNER DRIVE A dc servo motor is used as the scanner drive motor [A]. Scanner drive speed is 330 mm/sec. during scanning, and 1950 mm/sec. when the scanner goes back. The scanner drive motor drives the first [B] and second scanners [C] using two scanner drive wires via the timing belt [D] and the scanner drive shaft [E].
Page 58 23 April 1993 OPTICS 3.3 VERTICAL LENS DRIVE HP (100%) Enlarge Reduce (Enlarge → HP) (Reduce → HP) (Enlarge → Enlarge) (Reduce → Reduce) (Enlarge → Reduce) (Reduce → Enlarge) 30 30 steps The lens vertical drive motor [A] changes the lens vertical position in accordance with the selected reproduction ratio.
Page 59 OPTICS 23 April 1993 3.4 HORIZONTAL LENS DRIVE steps Enlarge Reduce The original horizontal position on the exposure glass varies depending on the mode (such as platen, DJF and RDH modes) for easy original handling. However, the center is the standard position for paper feed. Therefore, the lens horizontal position has to be changed according to paper size, reproduction ratio, original feed modes and the edit modes (centering, margin adjust, etc.).
Page 60 23 April 1993 OPTICS 3.5 HORIZONTAL LENS POSITIONING 3.5.1 For Original Position Platen 100% 143.5 Copy Paper (Center) Horizontal Lens Position There are three standard original positions for the platen, DJF and RDH modes. In platen mode, the original is aligned with both the rear [A] and the left [B] original scales (rear left corner [C] is the standard position).
Page 61 OPTICS 23 April 1993 3.5.3 For Reproduction Ratio Original Rear Edge 200% 100% Copy Paper Original 100% 200% 3rd Scanner Position When the reproduction ratio is changed, the vertical position of the lens is changed. At the same time, the total focal length has to be changed to adjust the image focusing.
Page 62 23 April 1993 OPTICS 3.6 3RD SCANNER DRIVE (Initialize) (Reduce/Enlarge → HP) (Reduce/Enlarge → Reduce/Enlarge) (Reduce/Enlarge → Reduce/Enlarge) (Reduce/Enlarge →Enlarge/Reduce) 40 steps 40 steps To compensate the focus for reproduction and lens position changes, the 3rd scanner (4th and 5th mirrors) position is changed. A stepping motor [A] (approx.
Page 63 OPTICS 23 April 1993 3.7 OPTICS CONTROL CIRCUIT Sensors Encoder Data Scanner Drive Optics Control Board Main Control Horizontal Lens Board Drive Vertical Lens Optics Control Drive Main 3rd Scanner Drive Optic Cooling Exposure Lamp Optic Thermistor AC Drive Board The optic control board communicates with the main board through a data bus.
Page 64: Automatic Image Density Control System (Ads)
23 April 1993 OPTICS 3.8 AUTOMATIC IMAGE DENSITY CONTROL SYSTEM (ADS) In ADS mode the original background density is sensed by the ADS sensor [A] and the main CPU determines an appropriate development bias voltage for the original to prevent dirty backgrounds from appearing on copies. The ADS sensor board is mounted on the rear side of the optics side plate.
Page 65 OPTICS 23 April 1993 90 mm (mm) 20 mm M = 1.0 (m = 50 ~ 100) (m = 101 ~ 200) 8.25 x 100 (mm) m: reproduction ratio (50 ~ 200) Sensor Original Output Voltage Peak hold For the first scanning of an original in ADS mode, the CPU starts sampling of the ADS sensor output while exposing the ADS pattern at the scanner home position.
Page 66: Manual Image Density Control
23 April 1993 OPTICS 3.9 MANUAL IMAGE DENSITY CONTROL When the image density is set manually, the voltage applied to the exposure lamp changes as shown in the table below. Lighter Darker –90 Dev. Bias Voltage –60 (negative) +4.5 LAMP +3.0 LAMP +0.5...
Page 67 OPTICS 23 April 1993 3.10 UNEVEN LIGHT INTENSITY CORRECTION exposure intensity original illumination distribution Shading plate The entire exposure lamp surface is frosted to ensure even exposure. To compensate for reduced light at the edge of the lens, a shading plate is placed in front of the lens.
Page 68: Original Size Detection In Platen Mode
23 April 1993 OPTICS 3.11 ORIGINAL SIZE DETECTION IN PLATEN MODE There are three reflective sensors (APS sensors) in the optics cavity for the original size detection. Original width Sensor [A] is used for sensing the original width and Original Length Sensor-1 [B] and Original Length Sensor-2 [C] sense the original length.
Page 69 OPTICS 23 April 1993 Original Size Length Sensor 1 Length Sensor 2 Width Sensor A4/A3 version LT/DLT version 11 x 7 10 x 14 x 14 – – — 8 x 13 A4–L x 11 B5–L — A5–L B6–L — A6–L —...
Page 70 23 April 1993 DEVELOPMENT 4. DEVELOPMENT 4.1 OVERVIEW This copier uses a double roller (diameter 20 mm each) development (DRD) system. This system differs from single roller development systems in that (1) it develops the image in a narrower area, (2) it develops the image twice, and (3) the relative speed of each development roller against the drum is reduced.
Page 71: Drive Mechanism
DEVELOPMENT 23 April 1993 4.2 DRIVE MECHANISM The gears of the development unit are driven by the development drive gear [A] when the development motor [B] (dc servomotor) turns. The gears of the toner hopper are driven by the toner supply roller drive gear [C] when the toner supply clutch [D] activates.
Page 72 23 April 1993 DEVELOPMENT 4.3 CROSSMIXING 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 rollers [A] is split into two parts by the doctor blade [B].
Page 73: Development Bias
DEVELOPMENT 23 April 1993 4.4 DEVELOPMENT BIAS 4.4.1 Overview The high voltage control Board [A] applies the negative development bias to the lower sleeve roller through the receptacle [B] and the lower sleeve roller shaft [C]. Then the bias is applied to the upper sleeve roller through the rear sleeve roller holder made of conductive resin.
Page 74 23 April 1993 DEVELOPMENT 4.4.2 Bias Control In Copy Cycle The bias output is determined by five factors. The total bias is described as; ADS Mode: BB + VBU Manual ID Mode: : Total bias : Base bias : ADS Compensation : User Tool mode ID Selection Compensation : Magnification Compensation : Manual ID Selection Compensation...
Page 75 DEVELOPMENT 23 April 1993 3) Manual ID Selection Position Compensation (V According to the manual ID selection position, the bias is compensated as follows: Lighter Darker +4.5 LAMP +3.0 LAMP Exposure +0.5 LAMP → Lamp Voltage LAMP –1.5 LAMP –3.5 LAMP –5.5 LAMP...
Page 76 23 April 1993 DEVELOPMENT 5) Magnification Compensation (V is determined by the selected reproduction ratio as follows: –100 Dev. Bias Voltage –60 (negative) –40 –30 –20 123% 142% 161% 116% 115% 122% 141% 160% 4.4.3 Bias Control Out of Copy Cycle To hold the toner on the sleeve rollers while the development sleeve rollers are rotating without image development, a constant –300 V bias is applied.
Page 77 DEVELOPMENT 23 April 1993 4.4.4 ID Sensor Pattern Bias –700 V Potential Sensor Detection ID Sensor –300 Bias Level +300 (V) 4.0 V ID Sensor Output While developing the ID sensor pattern, ID sensor bias is applied. ID sensor bias is determined during process control initial setting as follows: A charge is applied while grid voltage is –700 V to create the ID sensor pattern.
Page 78: Toner Supply
23 April 1993 DEVELOPMENT 4.5 TONER SUPPLY 4.5.1 Toner Supply Mechanism When the toner supply clutch [A] turns on, the agitator [B] moves the toner from front to rear and sends the toner to the toner supply roller. The toner supply clutch [A] located inside the development motor [C] applies the rotation from the development motor to the toner supply roller gear [D], which drives the agitator gear [E].
Page 79 DEVELOPMENT 23 April 1993 4.5.2 Toner End Detection The toner end sensor [A] detects if sufficient toner remains in the toner hopper or not. The toner end sensor monitors toner end condition once when the toner supply clutch turns on. When there is little toner inside the toner hopper and toner pressure on the toner end sensor becomes low, the toner end sensor outputs a pulse signal for each (one detection per one copy).
Page 80 23 April 1993 DEVELOPMENT 4.5.3 Toner Supply Control By using an SP mode ( Adjustment mode: PAGE 7), the following 3 kinds of toner supply controls can be selected. • Auto Process Control Mode • Detect Mode • Fixed Mode 1) Auto Process Control Mode Originals have various image proportions and image densities.
Page 81 DEVELOPMENT 23 April 1993 Fuzzy Control 2 The image on the OPC drum changes due to variations in toner chargeability (influenced by the environment) even if toner concentration is constant. The ID sensor directly checks the image on the OPC drum and shifts the V data under fuzzy control to keep the image on the OPC drum constant.
Page 82 23 April 1993 DEVELOPMENT 4.5.4 Bottle Drive Mechanism For easy access, the toner bottle is just inside the front cover. The bottle is positioned horizontally. The bottle drive mechanism transports toner from the bottle to the toner hopper [A]. A worm gear [B] on the bottle drive motor drives this mechanism. The toner bottle has a spiral groove [C] that helps move the toner to the toner hopper.
Page 83: Image Transfer
IMAGE TRANSFER 23 April 1993 5. IMAGE TRANSFER 5.1 PRE-TRANSFER LAMP The pre-transfer lamp [A] located in the drum unit is used to prevent incomplete toner transfer. 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.
Page 84 23 April 1993 IMAGE TRANSFER 5.2 IMAGE TRANSFER AND PAPER SEPARATION OVERVIEW This model uses a unique transfer belt unit instead of the transfer and separation corona unit. The transfer belt unit consists of the following parts: [A] Transfer belt A belt (length: 321 mm) with high electrical resistance which holds a high negative electrical potential and attracts the toner on the OPC drum onto the paper.
Page 85: Image Transfer And Paper Separation Mechanism
IMAGE TRANSFER 23 April 1993 5.3 IMAGE TRANSFER AND PAPER SEPARATION MECHANISM The registration rollers [A] starts feeding the paper [B] to the gap between the OPC drum [C] and the transfer belt [D] in proper timing. Immediately when the leading edge of the paper reaches the gap between the transfer belt and the OPC drum, the transfer belt...
Page 86 23 April 1993 IMAGE TRANSFER After the image transfer is completed, the charge on the transfer belt holds the paper to the transfer belt. Before separating the paper from the transfer belt, the transfer belt is discharged by the discharge plate [A].
Page 87: Transfer Belt Unit Lift Mechanism
IMAGE TRANSFER 23 April 1993 5.4 TRANSFER BELT UNIT LIFT MECHANISM The transfer belt lift solenoid [A] located inside the transfer belt unit turns on to raise the transfer belt to contact the OPC drum at the appropriate timing. The front lever [B] and the rear lever [C] are connected to the solenoid by links [D] and push up the stays [E] when the solenoid turns on.
Page 88 23 April 1993 IMAGE TRANSFER 5.5 PAPER TRANSPORTATION AND BELT DRIVE MECHANISM The transfer belt is driven by the main drive motor [A] through belt and gears. Since the transfer belt electrically attracts the paper [B], the transport fan is not required.
Page 89: Transfer Belt Cleaning Mechanism
IMAGE TRANSFER 23 April 1993 5.6 TRANSFER BELT CLEANING MECHANISM Some toner may adhere to transfer belt when paper jams occur, or when the by-pass feed table side fences are set in the wrong position causing the erase lamp to miss some toner. The adhered toner must be removed to prevent the rear side of the copy paper from being stained.
Page 90: Toner Collection Mechanism
23 April 1993 IMAGE TRANSFER 5.7 TONER COLLECTION MECHANISM Through idle gears [A], transfer belt drive is transmitted to the toner collection coil [B]. The toner collection coil transports the collected toner to the toner collection bottle. See section 2.2.5 for details. 2-65...
Page 91: Paper Feed
PAPER FEED 23 April 1993 6. PAPER FEED 6.1 OVERVIEW This model has three drawer tray paper feed stations. The following table shows the configuration of each feed stations of the A095 and A096 copiers. Feed station A095 copier A096 copier 550 sheets tray 500 + 500 sheets tandem feed tray 550 sheets universal tray 550 sheets universal tray...
Page 92: Frr Feed System
23 April 1993 PAPER FEED 6.2 FRR FEED SYSTEM This copier uses an FRR paper feed system using three rollers. 6.2.1 Pick-up Roller The pick-up roller [A] is not in contact with the paper stack before it starts feeding paper. Shortly after the Start key is pressed, the pick-up roller drops down and feeds the top sheet between the feed [B] and the separation rollers [C].
Page 93 PAPER FEED 23 April 1993 The direction in which the separation roller [A] turns depends on the frictional forces acting on it. The slip clutch applies a constant clockwise force (F1). When there is a single sheet of paper being driven between the rollers, the force of friction between the feed roller [B] and the paper (F2) is greater than F1.
Page 94: Slip Clutch Mechanism
23 April 1993 PAPER FEED 6.3 SLIP CLUTCH MECHANISM The slip clutch [A] consists of the input hub [B] and the output hub [C] which is the case of the clutch as well. The magnetic ring [D] and the steel spacers [E] are fitted onto the input hub.
Page 95 PAPER FEED 23 April 1993 6.4 FRR FEED DRIVE MECHANISM The rotation of the paper feed motor [A] is transmitted to the gear [B] via the timing belt [C], and then transmitted to the separation roller via the feed clutch gear [D], gear [E], gear [F] and gear [G]. If the paper feed station is not selected, the separation roller solenoid [H] de-activates and the separation roller [I] rotates freely in the reverse direction of paper feeding.
Page 96 23 April 1993 PAPER FEED When the paper feed station is selected and the start key is pressed, the feed clutch [A], separation roller solenoid [B], and the pick-up solenoid [C] turn on at once. When the feed clutch [A] activates to rotate the feed roller [D], the feed roller and the pick-up roller [E] turn together because they are linked by the idle gear [F].
Page 97: Separation Roller Release Mechanism
PAPER FEED 23 April 1993 6.5 SEPARATION ROLLER RELEASE MECHANISM In this model, the separation roller [A] is normally away from the feed roller [B]. When the paper feed station is selected, the separation roller solenoid [C] contacts the separation roller to the feed roller as explained in the previous two pages.
Page 98 23 April 1993 PAPER FEED 6.6 PAPER RETURN MECHANISM 3 mm When the paper feed clutch [A] activates and the feed roller drive shaft [B] rotates, the lever [C] rotates together with the shaft. However, the lever is immediately stopped by the stopper [D]. After all paper is fed and the paper feed clutch turns off, the paper feed motor still rotates to turn the separation roller [E] in the reverse direction.
Page 99: Paper Skew Prevention Mechanism
PAPER FEED 23 April 1993 6.7 PAPER SKEW PREVENTION MECHANISM In this model, paper corner holders [A] are not used to facilitate paper loading. Instead of the corner holders, both paper press arms [B] press down both paper side edges, especially in the case of paper with a face curl. This helps to keep paper from being guided by the tray side fences to prevent paper skew or jam.
Page 100: Paper Lift Mechanism
23 April 1993 PAPER FEED 6.8 PAPER LIFT MECHANISM When the tray is set in the machine, the machine detects this condition by using several detection methods as shown in the table: Feed station A095 copier A096 copier Tray set switch Tray set signal through the connector Paper size switch Paper size switch...
Page 101 PAPER FEED 23 April 1993 When the lift motor turns on, the pick-up solenoid [A] activates to lower the pick-up roller [B]. When the top sheet of paper reaches the proper paper feed level, the paper pushes up the pick-up roller and the actuator [C] on the pick-up roller supporter [D] activates the lift sensor [E] to stop the lift motor.
Page 102 23 April 1993 PAPER FEED 6.9 PAPER NEAR END / PAPER END DETECTION A feeler [A] on the lift arm shaft rotates counterclockwise in accordance with the change of the top paper level. When almost 50 sheets are left on the tray, the feeler activate the paper near end sensor [B] and informs the copier CPU of the paper near end condition.
Page 103 PAPER FEED 23 April 1993 6.10 TANDEM FEED TRAY (A096 COPIER ONLY) 6.10.1 OVERVIEW 500 sheets of paper can be set in each of the left [A] and right trays [B]. Paper is fed from the right tray. When the paper in the right tray runs out, the paper in the left tray is automatically transported to the right tray.
Page 104 23 April 1993 PAPER FEED 6.10.2 Fences Drive Mechanism The side fences [A] of the right tray are normally closed. They open only when paper in the left tray is transported to the right tray. The side fences are driven by the side fence drive motor [B] (stepping motor). When the paper loaded in the left tray is transported to the right tray, the side fence drive motor turns counterclockwise to open the side fences until the side fence positioning sensor [C] is activated.
Page 105 PAPER FEED 23 April 1993 6.10.3 Rear Fence Drive Mechanism When the paper end sensor [A] in the left tray detects paper and the paper end sensor in the right tray detects the paper end condition, the rear fence drive motor [B] (dc motor) in the left tray rotates counterclockwise to drive the rear fence [C] to push the paper into the right tray.
Page 106 23 April 1993 PAPER FEED 6.10.4 Tray Lock Mechanism Normally the left tray lock lever [A] in the right tray [B] fits in the hole [C] in the left tray [D]. During copying, if there is no paper in the left tray, the tray lock solenoid [E] turns on to release the tray lock lever so that the left tray can be separated from the right tray.
Page 107: Paper Size Detection
PAPER FEED 23 April 1993 6.11 PAPER SIZE DETECTION SW Actuate..0 Paper size L: Lengthwise De-actuate..1 S: Sideways A4/A3 LT/DLT 1 2 3 4 5 Version version 01111 A3–L 11 x 17–L 00111 B4–L x 14–L 10011 A4–L x 11–L 01001 A4–S x 11–S...
Page 108: Vertical Transport Mechanism
23 April 1993 PAPER FEED 6.12 VERTICAL TRANSPORT MECHANISM The vertical transport rollers [A] in each feed unit is driven by the paper feed motor. The vertical transport rollers and the driven vertical transport rollers [B], on the upper and the lower vertical guide plates, transport the paper from each feed unit to the registration roller.
Page 109 PAPER FEED 23 April 1993 6.13 TRAY POSITIONING MECHANISM - Tray Lock Mechanism - When the feed tray is set in the paper feed unit, the lock lever [A] drops behind the lock plate [B] on the Accuride support bracket to lock the tray in the proper position.
Page 110 23 April 1993 PAPER FEED - Side-to-side Positioning Mechanism - (All feed trays for the A095 copier and 2nd feed tray for the A096 copier) Side plates [A] are fixed on the positioning plate [B]. By moving the positioning plate (fixed by four screws), the paper position can be changed to adjust the side-to-side registration.
Page 111: Built In Lct
PAPER FEED 23 April 1993 6.14 BUILT IN LCT 6.14.1 Paper Tray Lift Mechanism Drive from the reversible LCT motor [A] is transmitted through a worm gear [B] to the drive pulley shaft [C]. The tray wires [D] are fixed in the slots [E] at the ends of the tray support rods [F] and [G].
Page 112 23 April 1993 PAPER FEED 6.14.2 Tray Lock Mechanism When the tray starts moving up, the tray lock lever [A] drops in the hole on the base plate to engage the stopper [B], locking the tray in position. This prevents the tray from being pulled out while in the up position. When the bottom plate is lowered to the bottom position, the bottom plate presses down the pin [C] on the lock lever.
Page 113: By-Pass Feed Table
PAPER FEED 23 April 1993 6.15 BY-PASS FEED TABLE 6.15.1 Feed Mechanism / Paper End Detection The by-pass feed table uses the FRR feed system. The by-pass feed motor [A], pick-up solenoid [B], and by-pass feed clutch [C] control paper feeding from the by-pass feed table.
Page 114 23 April 1993 PAPER FEED 6.15.2 Table Open/Close Detection When the by-pass feed table is opened, the by-pass table switch [A] is activated by part of the feed table [B]. Then the CPU turns on the by-pass feed indicator on the operation panel. On this model, opening the by-pass feed table does not shift the copier into interrupt mode.
Page 115 PAPER FEED 23 April 1993 6.15.3 Paper Size Detection The paper width detection is necessary to decide the lens horizontal position because the standard position of the optics (rear left corner) and the paper (center) is different. The by-pass paper size sensor [A] (variable resistor) monitors the paper width.
Page 116: Paper Registration
23 April 1993 PAPER FEED 6.16 PAPER REGISTRATION The registration rollers [A] have two functions. One is aligning the lead edge of the paper with the leading edge of the latent image on the OPC drum. When the CPU receives the signal from the registration sensor, the registration clutch turns on.
Page 117: Registration Drive Mechanism
PAPER FEED 23 April 1993 6.17 REGISTRATION DRIVE MECHANISM Through the timing belt [A], main motor [B] rotation is transmitted to the registration clutch [C]. When the registration clutch activates, the main motor drive is transmitted to the lower registration roller [D], then to the upper registration roller [E] via two gears [F] at the front side.
Page 118: Guide Plate Release Mechanism
23 April 1993 PAPER FEED 6.18 GUIDE PLATE RELEASE MECHANISM When a paper misfeed occurs between the vertical transport rollers and the registration rollers, the lower paper guide plate [A] automatically opens. When the registration sensor is not activated at a certain jam check timing, the guide plate solenoid [B] turns on.
Page 119: Image Fusing
IMAGE FUSING 23 April 1993 7. IMAGE FUSING 7.1 OVERVIEW After the image is transferred, the copy paper enters the fusing unit. Then the image is fused to the copy paper by a heat and pressure process through the use of a hot roller [A] and pressure roller [B]. The fusing lamp [C] located inside the hot roller is turned on and off to maintain the operating temperature of 185°C.
Page 120: Fusing Entrance Guide
23 April 1993 IMAGE FUSING 7.2 FUSING ENTRANCE GUIDE The entrance guide [A] for this machine is adjustable for thick or thin paper. With thin paper, set the entrance guide in the upper position. This slightly lengthens the paper path which prevents the paper from creasing in the fusing unit.
Page 121: Fusing Drive Mechanism
IMAGE FUSING 23 April 1993 7.3 FUSING DRIVE MECHANISM The fusing drive gear [A] transmits the drive from the fusing/duplex drive motor to the gear [B] which drives the hot roller gear [C]. Rotation passes from the gear [B] through the idle gear [D] to the exit roller drive gear [E]. The pressure roller is driven by the friction between the two fusing rollers.
Page 122: Fusing Lamp Control
23 April 1993 IMAGE FUSING 7.4 FUSING LAMP CONTROL °C 200 °C 180 °C 185°C : Main SW on : Process control data initial setting start : Idling start : Get ready When the main switch is turned on the CPU starts sending a trigger pulse to the fusing control circuit to turn on the fusing lamp.
Page 123 IMAGE FUSING 23 April 1993 7.5 INVERTER AND PAPER EXIT After passing the fusing unit, copies enter the inverter unit where paper is distributed to the paper exit rollers [A] or the duplex unit. The junction gate solenoid changes the position of the junction gate [B]. In duplex mode, the junction gate solenoid turns on to raise the junction gate so that the junction gate guides the paper into the duplex unit.
Page 124 23 April 1993 IMAGE FUSING 7.6 INVERTER AND EXIT DRIVE MECHANISM The gear [A] transmits the drive from the fusing/duplex drive motor [B] to the next gear [C]. This gear [C] transmits the drive to the paper exit and the inverter section through the timing belt [D].
Page 125 DUPLEX 23 April 1993 8. DUPLEX 8.1 OVERVIEW In this mode the junction gate [A] directs sheets exiting the fusing unit to the duplex tray entrance. After that, all sheets follow the path through the entrance rollers [B]. After all front side copying is completed, the sheets follow (the sheets on the duplex tray are fed in order from the bottom to the top) the path through the duplex feed mechanism and vertical transport rollers [C] to the registration rollers.
Page 126 23 April 1993 DUPLEX 8.2 DRIVE MECHANISM The duplex drive gear [A] transmits drive from the fusing/duplex drive motor [B] to the duplex unit. This drive is transmitted to the duplex paper feed section under the control of the duplex feed clutch [C] and transmitted to the duplex transport section under the control of the duplex transport clutch [D].
Page 127: Duplex Entrance To Duplex Tray
DUPLEX 23 April 1993 8.3 DUPLEX ENTRANCE TO DUPLEX TRAY After paper passes through the junction gate, it pushes the feeler [A] up. The feeler and the paper guide [B] form one part, so that when it is pushed up, the paper guide is moved out of the paper path.
Page 128: Duplex Stacking
23 April 1993 DUPLEX 8.4 DUPLEX STACKING 10 mm 10 mm The jogger motor (stepping motor) [A] drives the side fence drive wire [B] to move the side fences [C] inward or outward. When the main switch is turned on, the jogger motor rotates to place the jogger fences at the home position by monitoring the signal of the jogger home position sensor [D].
Page 129 DUPLEX 23 April 1993 8.5 DUPLEX PICK-UP ROLLER MECHANISM The positioning roller [A] is basically in the upper position. 150ms after the duplex transport sensor [B] detects the trailing edge of the paper (ON → OFF), the positioning solenoid [C] turns on to lower the positioning roller until it contacts the paper.
Page 130: Duplex Paper Feed
23 April 1993 DUPLEX 8.6 DUPLEX PAPER FEED The paper on the duplex tray is fed in order from the bottom to the top sheet. After all copies are stacked on the duplex tray, the duplex pressure solenoid [A] turns on to lower the pressure arm [B] so that the pressure arm presses the paper against the pick up roller [C].
Page 131 DUPLEX 23 April 1993 When the duplex entrance sensor [A] detects the trailing edge of the last paper, the pressure solenoid [B] turns off to raise the pressure arm [C]. At this moment, the duplex paper end sensor [D] confirms that no paper remains on the duplex tray.
Page 132: Installation
SECTION 3 INSTALLATION...
Page 133: Installation Requirements
23 April 1993 INSTALLATION REQUIREMENTS 1. INSTALLATION REQUIREMENTS 1.1 ENVIRONMENT 1. Temperature Range: 10°C to 30°C (50°F to 86°F) 2. Humidity Range: 15% to 90% RH 3. Ambient Illumination: Less than 1,500 lux (Do not expose to direct sunlight.) 4. Ventilation: Room air should turn over at least 3 times/hour.) 5.
Page 134: Minimum Space Requirements
INSTALLATION REQUIREMENTS 23 April 1993 1.3 MINIMUM SPACE REQUIREMENTS Place the copier near the power source, providing clearance as shown: More than 10 cm More than More than (See NOTE *3) 10 cm 10 cm (See NOTE *1) (See NOTE *2) Your machine More than 90 cm NOTE: *1.
Page 135: Power Requirements
23 April 1993 INSTALLATION REQUIREMENTS 1.4 POWER REQUIREMENTS 1. Input voltage level: 120 V/60 Hz: More than 20 A 220 ~ 240 V, 50/60 Hz: More than 10 A 2. Permissible voltage fluctuation: 10% 3. Permissible extension cord: At least 300 V/30 A capacity and less than 5 m (16.4 feet) long. NOTE: a) be sure to ground the machine.
Page 136: Copier Installation
COPIER INSTALLATION 23 April 1993 2. COPIER INSTALLATION 2.1 ACCESSORY CHECK Check the quantity and condition of the accessories in the box according to the following list: Description Q’ty 1. Operating Instructions (Except –27 machine) ......1 2. User Survey Card (–17 machine only) ......... 1 3.
Page 137: Copier Installation Procedure
23 April 1993 COPIER INSTALLATION 2.2 COPIER INSTALLATION PROCEDURE NOTE: Since the installation procedure is not packed with the copier as an accessory, always bring this manual with you. CAUTION: When installing the copier, make sure that the copier is unplugged.
Page 138 COPIER INSTALLATION 23 April 1993 2. Open the front doors. 3. Remove the tape strips. 4. Remove the scanner clamp [A] (1 screw) and install the cap [B] stuck on the paper exit bracket with a tape. 5. Remove the transfer belt lock plate [C] (1 screw). 6.
Page 139 23 April 1993 COPIER INSTALLATION 7. Remove the shutter cover [A] by releasing the hook [B]. 8. Remove the shutter inner cover [C] (1 screw). 9. Open the toner bottle holder [D]. NOTE: To open the toner bottle completely, while lowering the shutter lever [E], push the bracket [F] to the right, 11.
Page 140 COPIER INSTALLATION 23 April 1993 13. Disconnect two connectors [A]. 14. Pull out the development unit [B]. NOTE: 1. To prevent drum scratches, push the development unit to the right while pulling it out. 2. Place the development unit on the sheet [C] attached with the new developer to prevent foreign matter from being attracted to the sleeve rollers.
Page 141 23 April 1993 COPIER INSTALLATION 17. Evenly pour in one pack of developer [A] while turning the knob [B]. 18. Install the toner hopper [C] to the development unit (2 screws). 19. Install the development unit to the machine. 20. Connect two connectors [D]. 21.
Page 142 COPIER INSTALLATION 23 April 1993 23. Install the shutter inner cover [A] (1 screw). 24. While pushing the lever [B], set the shutter cover [C]. 25. Set a toner bottle by following the instructions on the decal. NOTE: Before plugging in the power cord, install the guidance ROMs. (–26, –27 machines) (See page 3-12) 26.
Page 143 23 April 1993 COPIER INSTALLATION 27. Enter SP mode as follows: 1) Press the clear modes key. 2) Enter "107". 3) Press the clear/stop key for more than 3 seconds. 28. Press the "SP Adjustment" key [A]. 29. Press the "Start" key [B] of the developer initial setting.
Page 144 COPIER INSTALLATION 23 April 1993 2.3 GUIDANCE ROM, INSTALLATION (OPTION: EUROPE VERSION ONLY) 1. If necessary, replace the three guidance ROMs on the operation panel PCB with the optional guidance ROMs as follows: 1) Remove three screws [A]. 2) Remove the two screws [B] securing the protective earth wires. 3-12...
Page 145 23 April 1993 COPIER INSTALLATION 5) Insert the screw driver from the hole [F] and push the operation panel [G] up. 6) Disconnect the connector [H]. 7) Replace the guidance ROMs (IC111 [I], IC112 [J], IC113 [K]) on the operation panel PCB [L]. 8) Re-install the operation panel, the left inner cover and the left front door.
Page 146 COPIER INSTALLATION 23 April 1993 2.4 PLATEN COVER (OPTION) INSTALLATION Install the optional platen cover as follows: 1. Install the sensor ass’y [A] which is an accessory of the platen cover [B] as follows: 1) Connect the red connector [C] to the rear sensor [D]. 2) Connect the white connector [E] to the front sensor [F].
Page 147: Paper Size Change
23 April 1993 COPIER INSTALLATION 2.5 PAPER SIZE CHANGE At the factory, all paper cassettes (1st, 2nd and 3rd) are set as A4 sideways. According to the customer’s request, change the paper size as follows. 2.5.1 550 Sheets Paper Tray (1st and 3rd feed stations for A095 copier) 1.
Page 148 COPIER INSTALLATION 23 April 1993 4. Enter SP mode as follows: 1) Press the mode clear key. 2) Enter "107". 3) Press the clear/stop key more than 3 seconds. 5. Press the "SP Special Feature" key [A]. 6. Press the "Next" key [B] 4 times to select the paper tray size setting mode (page 5) and press the appropriate paper size key of the...
Page 149 23 April 1993 COPIER INSTALLATION 2.5.2 1500 Sheets Paper Tray (3rd feed station for A096 copier) 1. Draw out the third feed tray [A]. 2. Change the position of the front and the rear side fences [B] (1 screw each) and the end fence [C] (one screw) according to the paper size. 3.
Page 150 COPIER INSTALLATION 23 April 1993 2.6 KEY COUNTER HOLDER INSTALLATION (OPTION) NOTE: Key counter holder set is available as a service part. 1. Remove the two plastic caps [A] and [B] on the right upper cover of the copier. 2. Replace the short-circuit connector [C] with the connector of the accessory harness [D].
Page 151 23 April 1993 COPIER INSTALLATION 4. Hold the fixing plate [A] on the inside of the key counter bracket [B] and insert the key counter holder [C]. 5. Fix the key counter holder [C] to the bracket [B] (2 screws). 6.
Page 152: Image Density Adjustment
COPIER INSTALLATION 23 April 1993 2.7 IMAGE DENSITY ADJUSTMENT The copy image density is already adjusted to the standard level at the factory. If a customer requests to have the image density adjusted, it can be done through the User Tool mode. 1.
Page 153 23 April 1993 COPIER INSTALLATION 4. Select appropriate Image Density level (5 steps) adjustment: 1) Press appropriate ID level key [A]. 2) Press the enter key [B]. 5. Press the "Menu" key [C]. 6. Press the "Exit" key [D] to exit User Tools mode.
Page 154: Service Tables
SECTION 4 SERVICE TABLES...
Page 155: Service Remarks
23 April 1993 SERVICE REMARKS 1. SERVICE REMARKS 1.1 HANDLING THE DRUM The organic photoconductor drum is comparatively more sensitive to light and ammonia gas than a selenium drum. 1. Never expose the drum to direct sunlight. 2. Never touch the drum surface with bare hands. When the drum surface is touched with fingers or becomes dirty, wipe with a dry cloth or clean with wet cotton.
Page 156: Charge Corona
SERVICE REMARKS 23 April 1993 1.2 DRUM UNIT 1. Make sure that the drum unit is set in position and the drum stay is secured with a screw when the main switch is turned on. If the drum unit is loose, poor contact of the drum connectors may cause electrical noise, resulting in unexpected malfunctions (RAM data change is the worst case).
Page 157: Erase Lamp
23 April 1993 SERVICE REMARKS 1.4 OPTICS 1. When installing the exposure glass, make sure that the mark (red for the A095 and white for the A096) on the edge of the glass faces up. This side has received a special treatment to be smoother and generate less static electricity.
Page 158: Development Unit
SERVICE REMARKS 23 April 1993 1.6 DEVELOPMENT UNIT 1. Be careful not to nick or scratch the development roller sleeves. 2. Place the development unit on a sheet of paper after removing it from the copier. This prevents any small metal objects (staples, clips, E-rings, etc.) from being attracted to the development roller and getting inside the unit.
Page 159: Cleaning Section
23 April 1993 SERVICE REMARKS 1.8 CLEANING SECTION 1. When servicing the cleaning section, be careful not to damage the edge of the cleaning blade. 2. Do not touch the cleaning brush with bare hands. 3. Before disassembling the cleaning section, place a sheet of paper under it to catch any toner falling from the section.
Page 160: Service Program Mode Operation
SERVICE PROGRAM MODE 23 April 1993 2. SERVICE PROGRAM MODE 2.1 SERVICE PROGRAM MODE OPERATION The service program (SP) mode is used to check electrical data, change modes, and adjust values. 2.1.1 Service Program Access Procedure 1. Press the clear modes key. 2.
Page 161 23 April 1993 SERVICE PROGRAM MODE 2.1.3 To Return to the Index Menu 1. Return to the index menu by touching Index on the display. 2.1.4 Change the Menu Screen Next 1. To move to the next page, touch [B]. Prev.
Page 162: Service Program Mode Table
SERVICE PROGRAM MODE 23 April 1993 2.2 SERVICE PROGRAM MODE TABLE 1 SP ADJUSTMENT PAGE 1 Item Function Note Both the TD sensor toner supply target With new developer, do not make any data (V ) and the TD sensor gain copy before performing the developer data are set automatically by using new initial setting.
Page 163 23 April 1993 SERVICE PROGRAM MODE PAGE 2 Item Function Note Enables or disables automatic charge Select OFF only when a cleaning wire cleaning mechanism. Default: ON mechanism malfunction occur. Changes the paper feed clutch on Refer to 6.6 Paper Feed Timing timing to adjust the paper buckle at the Adjustment"...
Page 164 SERVICE PROGRAM MODE 23 April 1993 SP ADJUSTMENT PAGE 3 PAGE 4 Item Function Note Adjustment standard: 0 ± 2 mm Changes the ON timing of the registration clutch. (0.5 mm/step) Adjustment standard: 3.5 ± 2.5 mm Changes the OFF timing of the erase lamp to adjust the leading edge erase margin.
Page 165 23 April 1993 SERVICE PROGRAM MODE SP ADJUSTMENT PAGE 5 PAGE 6 Item Function Note Adjusts the lens position to correct Input only the data number marked on magnification in enlarge/reduction the lens. modes. Adjusts the 3rd scanner home position to correct the focus.
Page 166 SERVICE PROGRAM MODE 23 April 1993 SP ADJUSTMENT PAGE 7 PAGE 8 Item Function Note Selects toner supply mode. Select "Auto Mode" in the field. (See the process control section for details of each supply mode.) Default: Auto Mode Factory Use only Select "N"...
Page 167 23 April 1993 SERVICE PROGRAM MODE SP ADJUSTMENT PAGE 9 Item Function Note Enter the data by using the number Selects the exposure lamp voltage when auto process control is disabled keys, then touch Adjust or RAM is cleared. (0.5 V/step) Default: 65.0 V Standard Data: 40 mA Adjusts the transfer current.
Page 168 SERVICE PROGRAM MODE 23 April 1993 SP ADJUSTMENT PAGE 10 A4/A3 VERSION PAGE 11 LT/DLT VERSION Item Function Note Adjusts the duplex jogger fence Press to increase the distance position for each paper size. in-between the side fences. (0.3 mm/step) Press to decrease the distance in-between the side fences.
Page 169 23 April 1993 SERVICE PROGRAM MODE SP ADJUSTMENT PAGE 12 NOTE: PAGE 15 is for factory use only. PAGE 16 is an extra page, it is not used. PAGE 13 PAGE 14 A4/A3 VERSION T/DLT VERSION Item Function Note Adjusts the staple position. This mode affects only the A377 Sorter Stapler Adjusts the vertical...
Page 170 SERVICE PROGRAM MODE 23 April 1993 SP TEST MODE PAGE 1 PAGE 2 Item Function Note Operates the copier without feeding Place sheets of white paper (A3 or 11" paper. x 17") on the exposure glass. Operates the copier without feeding Do not operate the machine in this paper or turning on the exposure lamp.
Page 171 23 April 1993 SERVICE PROGRAM MODE SP TEST MODE PAGE 3 PAGE 4 Item Function Note Use to check if the original size sensors Status 0 ----- de-activated are correctly activated and de-activated. Status 1 ----- activated Use to check if the sensors or switches Status 0 ----- de-activated are correctly activated and de-activated.
Page 172 SERVICE PROGRAM MODE 23 April 1993 SP TEST MODE PAGE 5 Item Function Note Operates the toner collection drive Start After touching the key, the mechanism. toner collection motor turns on for 1 minute. 4-18...
Page 173 23 April 1993 SERVICE PROGRAM MODE DATA OUT MODE PAGE 1 PAGE 2 Item Function Note Indicates the drum potential sensor Standard data: 0.1 ~ 0.7 V output when –100 V is applied to the OPC drum. Indicates the drum potential sensor Standard data: 2.7 V ~ 4.2 V output when –800 V is applied to the OPC drum.
Page 174 SERVICE PROGRAM MODE 23 April 1993 DATA OUT MODE PAGE 3 Item Function Note Indicates the exposure lamp voltage Works only when the auto process (ID Level 4) decided during process control is enabled ( control data initial setting. Adjustment - PAGE 7.) Standard data: 50 ~ 80 V Indicates the toner supply level by image area ratio on an original surface.
Page 175 23 April 1993 SERVICE PROGRAM MODE DATA OUT MODE PAGE 4 Item Function Note Indicates the drum potential while Standard data: 600 ~ 700 V detecting ID sensor pattern (grid voltage = – 700 V) Standard data: 2.7 ± 0.1 V Indicates the ADS sensor output at every scan.
Page 176 SERVICE PROGRAM MODE 23 April 1993 SP SPECIAL FEATURES PAGE 1 Item Function Setting Default Selects copy count up or Count up down. Reset Reset Count down Counts twice when an A3 Count twice or 11" x 17" copy is made. Reset Reset Count once...
Page 177 23 April 1993 SERVICE PROGRAM MODE PAGE 2 Item Function Setting Default Enables user code mode. Enable * See the NOTE below. Reset Reset Disable Enables the PM alarm. Enable Reset Reset Disable Selects the PM alarm 120 K interval after counter clear PM Counter Clear - PAGE 1) NOTE: To enable user code mode, perform the following procedure.
Page 178 SERVICE PROGRAM MODE 23 April 1993 SP SPECIAL FEATURES PAGE 3 Item Function Setting Default Enables automatic sort mode selection when 2 or Enable more is entered in the copy counter and an Reset original is set on the DJF Disable feed tray.
Page 179 23 April 1993 SERVICE PROGRAM MODE SP SPECIAL FEATURES PAGE 4 Item Function Setting Default Enables automatic Enable Reset access to the border/center erase mode Reset in platen cover mode. Disable Enables automatic Reset selection of a right margin Enable (5 mm, 0.2") for the duplex back side when Reset...
Page 180 SERVICE PROGRAM MODE 23 April 1993 SP SPECIAL FEATURES PAGE 5, 6 PAGE 7 Item Function Note Selects the paper size of each paper 1. Default is A4 or 8 x 11 feed station. sideways. Refer to section 3 for details of the paper size change procedure.
Page 181 23 April 1993 SERVICE PROGRAM MODE SP SPECIAL FEATURES PAGE 8 PAGE 9 Item Function Setting Default Selects the staple mode for Enable Reset the 1st job when the staple mode is selected for the 2nd Reset job in the pre-set mode. Disable The original size detection Reset...
Page 182 SERVICE PROGRAM MODE 23 April 1993 JAM/SC COUNTER PAGE 1 Item Function Note Indicates the total number of Press to scroll up. occurrences of each SC code. Press to scroll down. See Section 6 for details of each SC code. The counters for SCs that have not occurred are not displayed.
Page 183 23 April 1993 SERVICE PROGRAM MODE JAM/SC COUNTER PAGE 2 PAGE 3 Item Function Note Indicates the total number of jams in the copier and all peripherals. Indicates the total number of jams in the copier only. Indicates the total number of jams at Locations: each location.
Page 184 SERVICE PROGRAM MODE 23 April 1993 COPY COUNTER PAGE 1 PAGE 2 Item Function Note Indicates the total main motor rotation time. Indicates the total number of originals fed by the DF. Indicates the total number of copies. Indicates the total number of copies for each paper size.
Page 185 23 April 1993 SERVICE PROGRAM MODE COPY COUNTER PAGE 3, 4 PAGE 5 PAGE 6 Item Function Note Indicates the total number of the copies for each copy mode. Indicates the total number related to consumables. Indicates the total number of staples for each staple position.
Page 186 SERVICE PROGRAM MODE 23 April 1993 COUNTER CLEAR PAGE 1 PAGE 2 Item Function Note Clears all SC counters. Procedure to clear: 1. Touch Clear Clears all paper jam counters. The display changes as shown at right. Clears all original jam counters. 2.
Page 187 23 April 1993 SERVICE PROGRAM MODE PM COUNTER CLEAR PAGE 1 PAGE 2 Item Function Note 1. Indicates the total number of copies Procedure to clear: since the last PM (PM counter). 1. Touch Clear 2. Clears the PM counter. The display changes as shown at right.
Page 188 SERVICE PROGRAM MODE 23 April 1993 PM COUNTER CLEAR PAGE 3, 4 Item Function Note 1. Indicates the total number of copies Procedure to clear: since the last PM for each unit. 1. Touch Clear (unit counter) The display changes as shown at 2.
Page 189 23 April 1993 SERVICE PROGRAM MODE MEMORY CLEAR PAGE 1 Item Function Note Returns all data to the default data. Procedure to clear: Clear 1. Touch The display changes as shown at right. 2. Touch (Touch to cancel.) The display returns to the one shown at left and the beeper sounds twice.
Page 190 SERVICE PROGRAM MODE 23 April 1993 2.3 SENSOR/SWITCH/SIGNAL DATA CHECK (INPUT MODE) – How to check the sensor/switch/signal – 1. Enter SP mode as follows: 1) Press the mode clear key. 2) Enter "107" 3) Press the clear/stop key for more than 3 seconds. 2.
Page 191 23 April 1993 SERVICE PROGRAM MODE Input Sensor/Switch/|Signal Status Registration Sensor Paper not detected Paper detected Fusing Exit Sensor Paper not detected Paper detected Exit Sensor Paper not detected Paper detected Vertical Transport Sensor Paper not detected Paper detected 1st Tray Set Switch (A095 only) Not set By-Pass Paper End Sensor Paper detected...
Page 192 SERVICE PROGRAM MODE 23 April 1993 Input Sensor/Switch/|Signal Status 3.5 K LCT Lift Sensor Not lifted Lifted 3.5 K LCT Tray Down Key Not pressed Pressed 3.5 K LCT Feed Sensor Paper not detected Paper detected 3.5 K LCT Tray Down Sensor Tray not down Tray down 3.5 K LCT Door Switches...
Page 193 23 April 1993 SERVICE PROGRAM MODE Input Sensor/Switch/|Signal Status Entrance Sensor (A377 S/S) Paper detected Paper not detected Entrance Sensor (Finisher) Paper detected Paper not detected Proof Exit Sensor (A377 S/S) Paper detected Paper not detected Exit Sensor (Finisher) Paper detected Paper not detected Jam Sensor (Photo transistor) (A377 Paper detected...
Page 194 SERVICE PROGRAM MODE 23 April 1993 Input Sensor/Switch/|Signal Status Input No 117 ~ 130 are not used. Scanner HP. Sensor Not at HP At HP Lens vertical HP. Sensor At HP Not at HP Lens Horizontal HP. Sensor At HP Not at HP 3rd Scanner HP.
Page 195 23 April 1993 SERVICE PROGRAM MODE Input Sensor/Switch/|Signal Status Registration SN 1 (DJF) Original not detected Original detected Feed-out Motor Encoder Pulse – – (RDH) Feed-out SN (DJF) Original not detected Original detected Lift Switch (RDH) Down Lifted Not used (DJF) –...
Page 196 SERVICE PROGRAM MODE 23 April 1993 2.4 ELECTRICAL COMPONENT CHECK (OUTPUT MODE) CAUTION: The motors keep turning in this mode regardless of the upper or lower limit sensor signal. Do not keep the electrical component on for a long time to prevent mechanical or electrical damage.
Page 197 23 April 1993 SERVICE PROGRAM MODE Next 3. Touch [A] on the display twice. Output No. 00 Output No. 00 4. 1) Touch [B]. 2) Enter the electrical component number by using the number keys on the operation panel. (Refer to the table in the following pages.) 3) Press the Enter key [C].
Page 198 SERVICE PROGRAM MODE 23 April 1993 Output Check Mode Table – 1 Output No. Electrical Component Not used Junction Solenoid LCT Feed Clutch By-pass Feed Clutch Duplex Transport Clutch Toner Supply Clutch By-pass Pick-up Solenoid Guide Plate Solenoid LCT Pick-up Solenoid Toner Bottle Motor Duplex Transport Clutch Pressure Arm Solenoid...
Page 199 23 April 1993 SERVICE PROGRAM MODE Output No. Electrical Component 1st Lift Motor (Up) 1st Lift Motor (Down) 2nd Lift Motor (Up) 2nd Lift Motor (Down) 3rd Lift Motor (Up) 3rd Lift Motor (Down) Not used Not used Rear Fence Drive Motor (Counterclockwise) Rear Fence Drive Motor (Clockwise) 1st Paper Feed Clutch 2nd Paper Feed Clutch...
Page 200 SERVICE PROGRAM MODE 23 April 1993 Output No. Electrical Component Bin Drive Motor (A377 S/S) Junction Gate Solenoid (Finisher) Jogger Motor (A377 S/S) Positioning Roller Solenoid (Finisher) Bin Rear Plate Drive Motor (A377 S/S) Jogger Motor (Finisher) Grip Motor (A377 S/S) Sift Motor (Finisher) Grip Positioning Solenoid (A377 S/S) Stack Feed-out Motor (Finisher)
Page 201: User Tools
23 April 1993 SERVICE PROGRAM MODE 2.5 USER TOOLS This mode is for the key operators in charge of this copier. The operator can change or set the copier’s default settings using the following user tools. 2.5.1 User Tools Menu 4-47...
Page 202 SERVICE PROGRAM MODE 23 April 1993 2.5.2 How To Access The User Tools 1. Press the Clear Modes key. 2. Press the Clear/Stop key more than 3 seconds until the User Tool Menu appears on the touch panel display. 3. Select the menu number to use by touching the touch panel display. This copier has 12 user tools.
Page 203 23 April 1993 SERVICE PROGRAM MODE Auto reset/Auto off Auto reset The copier returns to its initial condition automatically after your job is finished. The automatic reset time can be set from 1 second to 999 seconds, or the function can be turned off.
Page 204 SERVICE PROGRAM MODE 23 April 1993 3 Set date/time Use to set the copier’s internal clock before setting the weekly timer. Set the clock following the touch panel display instructions. • If necessary, remember to adjust the clock for daylight saving time (summer time), or return it to standard time.
Page 205 23 April 1993 SERVICE PROGRAM MODE Set operation modes Maximum copy input number The maximum copy quantity can be set from 1 to 999. Default: 999 Panel beeper The beeper (key tone) can be set to on or off. default: ON Job End Call The beeper (job end call) sounds when your copying job is finished, supplies (toner, paper) run out, or if a problem...
Page 206 SERVICE PROGRAM MODE 23 April 1993 6 Change fixed R/E This copier has 10 fixed ratios (4 enlargements and 6 reductions). You can change these fixed reproduction ratios to different ratios. Set standard tray display Paper Tray Priority When Auto Paper Select is canceled, the 1st tray is selected as a default setting.
Page 207 23 April 1993 SERVICE PROGRAM MODE Select ARDF/RDH modes This user tool can be used only when your machine is equipped with the dual job feeder (system A and B) or the recirculating document handler (system C). Original Count Display In the default setting, you can see the entered copy quantity on the upper part of the copy counter and the number of copies made on the lower part.
Page 208 SERVICE PROGRAM MODE 23 April 1993 User Tools for User Code Mode If the copier is set to use the User Code function, operators must input their user codes before the machine can operate. The copier keeps count of the number of copies made under each user code.
Page 209: Main Control Board
23 April 1993 TEST POINTS / CHECK POINTS 3. TEST POINTS / CHECK POINTS 3.1 MAIN CONTROL BOARD TP Number Label Monitoring Signal TP101 (PSN) ID Sensor Output TP102 (TSN) TD Sensor Output TP103 (VLT) Drum Potential Sensor Output TP104 (D.TH) Drum Thermistor Output TP105...
Page 210: Operation Panel Board
TEST POINTS / CHECK POINTS 23 April 1993 3.2 OPTICS CONTROL BOARD TP Number Label Monitoring Signal TP501 (ADS) ADS Sensor Output TP502 (UNIT-TEMP) Optics Thermistor Output TP503 (MOTOR-TEMP) Scanner Motor Thermistor Output TP504 (GND) CGND TP505 (+5V) TP506 (SC-START) Scanner Start Signal TP507 (ENCODER-OUT)
Page 211: Preventive Maintenance Schedule
23 April 1993 PREVENTIVE MAINTENANCE SCHEDULE 4. PREVENTIVE MAINTENANCE SCHEDULE 4.1 PM TABLE NOTE: The numbers mentioned for PM intervals indicate the number of copies. Symbol key: C: Clean R: Replace L: Lubricate I: Inspect 120 K 240 K 360 K NOTE OPTICS Mirrors, Lens, Reflectors...
Page 212 PREVENTIVE MAINTENANCE SCHEDULE 23 April 1993 120 K 240 K 360 K NOTE Pre-Transfer Lamp Filter Dry cloth and blower brush. Discharge any static before installation. Quenching Lamp Dry cloth and blower brush. ID Sensor Blower brush. Erase Lamp Unit Dry cloth.
Page 213 23 April 1993 PREVENTIVE MAINTENANCE SCHEDULE 120 K 240 K 360 K NOTE Hot Roller Isolating Refer to NOTE 6 Bushing DUPLEX (for duplex copies) Feed Roller Separation Belts Pick-up/Transport Rollers Positioning Pins/Holes Refer to NOTE 7 OTHERS Ozone Filter Drive Belts Replace if necessary.
Page 214 PREVENTIVE MAINTENANCE SCHEDULE 23 April 1993 120 K 240 K 360 K NOTE RECIRCULATING DOCUMENT HANDLER Transport Belts Belt cleaner. Replace if necessary. Feed Roller Alcohol. Replace if necessary. Separation Belt Alcohol. Replace if necessary. FINISHER Rollers Water. Bushings Use Launa oil or equivalent. Gears Use Grease–501.
Page 215 23 April 1993 PREVENTIVE MAINTENANCE SCHEDULE The location of the parts which should be lubricated at PM, are shown in the following figures: NOTE 1: Scanner/Lens Guide Rods (1) Lubricate the horizontal and vertical lens guide rods [A] with Launa Oil every 120 K copies.
Page 216 PREVENTIVE MAINTENANCE SCHEDULE 23 April 1993 NOTE 2: Vertical Transport Guide Lock Pin Lubric lock p every NOTE 3: Charge Wire Cleaner Drive Gears Open the drive motor cover [B] (2 screws). NOTE: When re-installing the cover, do not tighten the screws too much.
Page 217 23 April 1993 PREVENTIVE MAINTENANCE SCHEDULE NOTE 4: Cleaning Drive Section (1) Lubricate the cleaning blade shift cam [A] with Grease G501 every 240 K copies. (2) Lubricate the cleaning section drive gear [B] with Grease G501 every 240 K copies. NOTE 5: Toner Bottle Holder (1) Lubricate the toner bottle drive gears [C] with Grease G501 every...
Page 218 PREVENTIVE MAINTENANCE SCHEDULE 23 April 1993 NOTE 6: Fusing Section 4 - 6 4...
Page 219: Explanation Of Regular Pm
23 April 1993 PREVENTIVE MAINTENANCE SCHEDULE 4.2 EXPLANATION OF REGULAR PM Item Explanation Optics Unit Mirrors, Lens, Stains on any part of the optics unit result in black Reflector, Exposure lines or areas of decreased sharpness on the copy Glass, Platen Cover, image.
Page 220 PREVENTIVE MAINTENANCE SCHEDULE 23 April 1993 Item Explanation Around the Charge Wires/ Dirty charge wires may cause uneven image density. Drum Wire Cleaner/ They should be replaced at regular intervals. Charge Grid End Blocks Toner tends to accumulate on the corona end blocks, this can result in a high voltage leak.
Page 221 23 April 1993 PREVENTIVE MAINTENANCE SCHEDULE Item Explanation Fusing Unit Thermistor If toner accumulates on the thermistor, fusing temperature control may not be accurate. Clean the thermistor at regular intervals. Stripper Pawls Toner or dust adhering to the stripper pawls can cause a paper jam.
Page 222: Regular Pm Procedure
PREVENTIVE MAINTENANCE SCHEDULE 23 April 1993 4.3 REGULAR PM PROCEDURE Every 120k Every 240k or 360k Make a copy of O-S-A3 test chart at manual 1. Make a copy image density level 4. 2-1. Clean the mirrors, lens and reflectors by 2.
Page 223 23 April 1993 PREVENTIVE MAINTENANCE SCHEDULE 4-1. Remove the developer. 4. Development unit 4-2. Clean the development unit and gears. (every 120 K) 4-3. Pour a pack of new developer. 4-4. Replace the air filter. 4-5. Clean the toner bottle holder and toner receiver.
Page 224 PREVENTIVE MAINTENANCE SCHEDULE 23 April 1993 8-1. Clean the entrance and exit guide plates. 8. Fusing unit 8-2. Clean the thermistor and apply silicone (every 120 K) oil. 8-3. Clean the stripper pawls. Replace stripper pawls, hot roller, pressure roller, and pressure roller bearings.
Page 225: Replacements And Adjustments
SECTION 5 REPLACEMENTS AND ADJUSTMENTS...
Page 226: Front Side
23 April 1993 EXTERIOR AND INNER COVER REMOVAL 1. EXTERIOR AND INNER COVER REMOVAL 1.1 FRONT SIDE 1.1.1 Left Front Cover 1. Open the left front door [A] then unhook the chain (1 screw). 2. Pull out the pin [B]. 3.
Page 227 EXTERIOR AND INNER COVER REMOVAL 23 April 1993 1.2 REAR SIDE 1.2.1 Upper Rear Cover and [B]. After the upper rear cover is re-installed, set the fiber optics NOTE: connectors [A] and [B] so that the fiber optic cable [A] is located over the electrical cable [B].
Page 228 23 April 1993 EXTERIOR AND INNER COVER REMOVAL 1.2.3 Left Inner Cover 1. Remove the left front door [A]. 2. Remove the left inner cover (4 screws) [B]. 1.2.4 Right Inner Cover 1. Open the right door [C]. 2. Remove knob B1 [D] (1 screw). 3.
Page 229 EXTERIOR AND INNER COVER REMOVAL 23 April 1993 1.2.5 Shutter Inner Cover 1. Open the right door. 2. Remove the shutter cover [A] by releasing the hook [B]. 3. Remove the shutter inner cover [C] (1 screw). NOTE: 1. Be sure to move the lever [D] until it contact the part [E]. 2.
Page 230: Right Side
23 April 1993 EXTERIOR AND INNER COVER REMOVAL 1.3 RIGHT SIDE 1.3.1 Feed Unit Cover 1. Open the by-pass table [A] approximately 45 degrees and push the stoppers [B] of the feed unit cover [C] by using a small flat head screw driver [D], then remove the feed unit cover.
Page 231 EXTERIOR AND INNER COVER REMOVAL 23 April 1993 1.3.2 Upper Right Cover 1. Remove the right inner cover [A], shutter cover [B] and the shutter inner cover [C]. (Refer to Shutter Inner Cover Removal.) 2. Remove the upper rear cover [D]. (Refer to Upper Rear Cover Removal.) 3.
Page 232: Left Side
23 April 1993 EXTERIOR AND INNER COVER REMOVAL 1.4 LEFT SIDE 1.4.1 Upper Left Cover 1. Remove the left inner cover. (Refer to Left Inner Cover Removal.) 2. Remove the upper rear cover [A]. (Refer to Upper Rear Cover Removal.) 3.
Page 233: Operation Panel
EXTERIOR AND INNER COVER REMOVAL 23 April 1993 1.5 OPERATION PANEL 1. Turn off the main switch. 2. Remove the left door. (Refer to Left Door Removal.) 3. Remove the left inner cover. (Refer to Left Inner Cover Removal.) 4. Open the right door. 5.
Page 234: Upper Side
23 April 1993 EXTERIOR AND INNER COVER REMOVAL 1.6 UPPER SIDE 1.6.1 Upper Cover 1. Turn off the main switch. 2. Remove six screws [A]. 3. Remove two screws [B] securing the grounding wires. 4. Disconnect two connectors [C]. 5. Remove the upper cover [D]. 1.6.2 Rear Upper Cover 1.
Page 235: Exposure Glass Removal
OPTICS 23 April 1993 2. OPTICS 2.1 EXPOSURE GLASS REMOVAL 1. Turn off the main switch. 2. Remove the left scale [A] (2 shoulder screws). 3. Remove the rear scale [B] (3 screws). 4. Grasp the left edge of the exposure glass [C] and lift slightly. Slide the other edge out from under the right glass holder [D].
Page 236: Exposure Lamp Replacement
23 April 1993 OPTICS 2.2 EXPOSURE LAMP REPLACEMENT NOTE: Do not touch the reflector or the new exposure lamp with your bare hands. Use a strip of paper as shown. (Oil marks from fingers on the lamp or reflectors will be affected by heat from the lamp.) 1.
Page 237 OPTICS 23 April 1993 NOTE: Make sure that the blister [A] on the lamp points towards the reflector opening (left side of the copier) as shown. 6. Reassemble the copier. 7. Turn on the main switch and enter SP mode, then perform the process control data initial setting ( SP Adjustment –...
Page 238: Optics Thermoswitch Replacement
23 April 1993 OPTICS 2.3 OPTICS THERMOSWITCH REPLACEMENT NOTE: The thermoswitch can be reset manually by pushing the red button [A] when the exposure lamp area cools. 1. Remove the exposure glass. (Refer to Exposure Glass Removal.) 2. Move the first scanner to the cutout position at the rear frame. 3.
Page 239 OPTICS 23 April 1993 2.4 SCANNER HP SENSOR REPLACEMENT 1. Remove the upper rear cover [A]. (Refer to Upper Rear Cover Removal.) 2. Remove the exhaust fan [B] (3 screws). 3. Manually turn the scanner drive pulley [C] counterclockwise to move the scanners about 10mm to the left (rear view).
Page 240 23 April 1993 OPTICS 2.5 ADS SENSOR REMOVAL 1. Remove the exhaust fan [A]. (Refer to Scanner HP Sensor Replacement.) 2. Remove the DJF/RDH connector bracket [B] (2screws). 3. Remove the ADS Sensor [C] with the cover [D] (1screw). 4. Replace the ADS Sensor [C] (2 screws). 5.
Page 241 OPTICS 23 April 1993 2.6 SCANNER DRIVE MOTOR 0.5 mm 1. Remove the exhaust fan. (Refer to Scanner HP Sensor Replacement.) 2. Remove the tension spring [A]. 3. Remove the tension tightener [B]. NOTE: Re-install the tightener as follows; 1) Hook part [C] of the bracket on the screw [D] installed on the scanner drive motor bracket.
Page 242 23 April 1993 OPTICS 2.7 SCANNER DRIVE WIRES REPLACEMENT - Removal - 1. Turn off the main switch. 2. Remove the exposure glass. 3. Remove the upper cover and the rear upper cover. 4. Remove the optics thermistor [A] (1 screw, 1 harness clamp). 5.
Page 243 OPTICS 23 April 1993 9. Remove the lens unit cover [A] (2 screws). 10. Unhook the tension spring [B]. 11. Remove the lens shield plate [C]. NOTE: When installing the lens shield plate, set the rear part [D] of the lens shield plate between the guides [E] as shown.
Page 244 23 April 1993 OPTICS 12. Remove the front bracket [A] (2 screws). 13. Remove the screw [B] securing the scanner flat cable. 14. Unhook the four harness clamps [C]. 15. Disconnect the connector [D] outside the optic side frame. 16. Remove the connector [E] from the optic side frame. 17.
Page 245 OPTICS 23 April 1993 18. Remove the harness cover [A] (2 screws). 19. Remove the light shield mylar bracket [B] (1 screw). 20. Disconnect the paper length size sensor connector [C] and move the lens unit to the left, then remove the rear bracket [D] (2 screws). 21.
Page 246 23 April 1993 OPTICS 23. Remove the left inner cover [A] (4 screws). 24. Remove the E-ring [B] of the scanner drive shaft and remove the front ball bearing [C]. 25. Remove the rear drive pulley [D] (1 Allen screw) and remove the rear ball bearing [E].
Page 247 OPTICS 23 April 1993 - INSTALLATION - 1. Round the rear scanner drive wire on the rear pulley as follows: 1) Align the cut out [A] on the edge of the rear drive pulley and the blue mark [B] on the wire as shown. 2) Round the wire counterclockwise 5 times as shown (in the illustration, the D-cut [C] on the shaft is at the front side) then set the bead [D] on the wire in the hole [E] on the pulley.
Page 248 23 April 1993 OPTICS 2. Round the front scanner drive wire on the front pulley as shown: 1) Align the cut out [A] on the edge of the front drive pulley and the red mark [B] on the wire. 2) Round the wire clockwise 5 times as shown (in the illustration, the Allen screw holes are at the rear side) then set the bead [C] on the wire in the hole [D] on the pulley.
Page 249 OPTICS 23 April 1993 3. Set the front drive pulley [A] on the drive shaft. (Leave the Allen screws loosened.) 4. Place the scanner drive shaft [B] in the holes on the optics front and rear side frames. 5. Set ball bearings [C] on both sides of the scanner drive shaft. 6.
Page 250 23 April 1993 OPTICS 10. Route the shorter end [A] of the rear scanner drive wire in the following order. Rear track counterclockwise Clockwise Lower track clockwise. Fix the end of the wire on the frame with tape [B]. 5-25...
Page 251 OPTICS 23 April 1993 11. Route the longer end [A] of the rear scanner drive wire in the following order. Through front track, upper side. Counterclockwise. Upper track counterclockwise. Hook the end [B] of the wire on the cutout on the right optics side frame.
Page 252 23 April 1993 OPTICS 12. Route the shorter end [A] of the front scanner drive wire in the following order. Front track counterclockwise Clockwise Lower track clockwise. Fix the end of the wire on the frame with tape [B]. 5-27...
Page 253 OPTICS 23 April 1993 13. Route the longer end [A] of the front scanner drive wire in the following order. Through rear track, upper side. Counterclockwise. Upper track clockwise. Hook the end of the wire [A] on the cut out on the right optics side frame.
Page 254 23 April 1993 OPTICS 18. Install the rear bracket [A] (2 screws, 1 connector), shielding mylar bracket [B] (1 screw) and harness cover [C] (2 screws). 19. Adjust the second scanner alignment as follows: - Second Scanner Alignment - 1) Move the second scanner [D] to the left end position. Fix the rear side of the second scanner by inserting the jig pin [E] in the holes on the rear side of the second scanner and the rear guide rail.
Page 255 OPTICS 23 April 1993 20. Place the first scanner unit on the guide rail then adjust the first scanner alignment as follows: - First Scanner Alignment - 1) Move the first scanner [A] to the left end position. Fix the rear end of the first scanner by inserting the jig pin [B] in the holes on the first scanner and the guide rail.
Page 256 23 April 1993 OPTICS TP504 TP504 TP512 TP514 24. Turn on the main switch and perform the scanner free run for about 5 minutes to break in the wires and to confirm correct scanner movement as follows: - Scanner Free Run - 1.
Page 257 OPTICS 23 April 1993 2.8 SCANNER CONTROL ADJUSTMENT LED 501 Perform this adjustment under any one of the following conditions: After the scanner motor replacement After the scanner wire replacement After the scanner timing belt replacement After replacing the optics control Board 1.
Page 258 23 April 1993 OPTICS 2.9 THIRD SCANNER REMOVAL 1. Remove the exposure glass. (Refer to Exposure Glass Removal.) 2. Remove the upper cover [A]. (Refer to Upper Cover Removal.) 3. Remove the lens unit cover [B] (2 screws). 4. Remove the two screws [C] fixing the front third scanner bracket. 5.
Page 259 OPTICS 23 April 1993 2.10 THIRD SCANNER DRIVE MOTOR / HP SENSOR REPLACEMENT 1. Remove the third scanner unit. (Refer to the Third Scanner Removal.) 2. Open the right front cover then remove the shutter cover [A]. 3. Remove the shutter inner cover [B] (1 screw). 4.
Page 260 23 April 1993 OPTICS 2.11 LENS HORIZONTAL DRIVE BELT REMOVAL 1. Remove the lens unit cover [A] and light shielding plate [B]. (Refer to Scanner Drive Wires Replacement.) 2. Remove the light shielding mylar bracket [C] (1 screw). NOTE: When re-installing the mylar bracket [C], be sure not to create any gap between the bracket and the lens cover.
Page 261 OPTICS 23 April 1993 5. Remove the lens unit [A] (2 screws). 6. Loosen the tension pulley bracket [B] (1 screw). 7. Push the pulley bracket to the front then unhook the timing belt [C]. 8. Remove the two timing belt holders [D] (1 screw each). NOTE: When setting the timing belt, align the end [E] of the timing belt to the edge [F] of the belt holder.
Page 262 23 April 1993 OPTICS 2.12 LENS VERTICAL DRIVE BELT REMOVAL 1. Remove the third scanner drive unit. (Refer to Third Scanner Drive Motor Replacement.) 2. Remove the front bracket [A]. (Refer to Scanner Drive Wires Replacement.) 3. Remove the lens unit [B]. (Refer to Lens Horizontal Drive Belt Replacement.) 4.
Page 263 OPTICS 23 April 1993 2.13 ORIGINAL SIZE SENSORS (2 LENGTH SENSORS, 1 WIDTH SENSOR) 1. Remove the exposure glass. (Refer to Exposure Glass Removal.) 2. Remove the lens unit cover [A] (2 screws). 3. Remove the original size sensor covers [B] (1 screw each). 4.
Page 264: Development And Toner Supply
23 April 1993 DEVELOPMENT AND TONER SUPPLY 3. DEVELOPMENT AND TONER SUPPLY 3.1 DEVELOPMENT UNIT REMOVAL 1. Turn off the main switch. 2. Open the front doors. 3. Removetheshutter cover [A] by releasing the hook [B]. NOTE: Be sure to move the lever [C] until it contacts part [D] (fully to the front).
Page 265 DEVELOPMENT AND TONER SUPPLY 23 April 1993 6. Close the toner hopper cap [A]. 7. Remove the screw [B] fixing the drum stay [C]. 8. Remove the drum stay knob [D] then take out the drum stay. 9. Disconnect the two connectors [E]. 10.
Page 266: Developer Replacement
23 April 1993 DEVELOPMENT AND TONER SUPPLY 3.2 DEVELOPER REPLACEMENT 1. Take out the development unit. (Refer to Development Unit Removal.) 2. Place the development unit on the sheet [A] included with new developer. 3. Remove the two screws [B] fixing the toner hopper [C]. 4.
Page 267 DEVELOPMENT AND TONER SUPPLY 23 April 1993 6. Clean the side seals [A] and entrance seal [B]. NOTE: Cover the sleeve rollers with a sheet of paper [C] to prevent the used developer being attracted to the sleeve rollers. 7. Evenly pour in one pack of developer [D] while turning the knob [E]. 8.
Page 268 23 April 1993 DEVELOPMENT AND TONER SUPPLY 3.3 DEVELOPMENT ROLLERS REPLACEMENT 1. Remove the developer. (Refer to Developer Replacement.) 2. Remove the developer entrance seal [A] (2 screws, 2 hooks). 3. Remove the front and rear side seals [B]. NOTE: When re-assembling the development unit, use new side seals and align the edge of the side seals to the corner [C] and the edge [D] as shown.
Page 269 DEVELOPMENT AND TONER SUPPLY 23 April 1993 4. Remove the coupling gear [A] (1 screw). NOTE: Be careful not to lose the pin [B]. 5. Remove the gear [C] (1 E-ring), gear [D] (1 E-ring) and gear [E]. CAUTION: Do not touch the screws at [F] and [G]. If the screws at [F] are loosened, the doctor gap will be improper.
Page 270 23 April 1993 DEVELOPMENT AND TONER SUPPLY 7. Replace the sleeve rollers. 8. Re-assemble the development unit and set the developer, then re-assemble the copier. CAUTION: If the original developer (already used) is returned to the development unit, do not perform the developer initial setting.
Page 271: Toner Density Sensor Replacement
DEVELOPMENT AND TONER SUPPLY 23 April 1993 TONER DENSITY SENSOR REPLACEMENT 1. Remove the developer. (Refer to Developer Replacement.) 2. Replace the TD sensor [A] (2 screws). NOTE: Before installing the TD (Toner Density) sensor, clean the development unit well so that no carrier particle remains in the gap between the TD sensor and the development unit casing.
Page 272 23 April 1993 DEVELOPMENT AND TONER SUPPLY 3.5 TONER BOTTLE DRIVE MOTOR REPLACEMENT 1. Open the toner bottle holder [A] with the bracket [B]. (Refer to Development Unit Removal.) 2. Remove the toner bottle [C]. 3. Remove four screws then remove the toner bottle holder by unhooking the hole [D] from the pin on the hinge.
Page 273 DRUM UNIT 23 April 1993 4. DRUM UNIT 4.1 DRUM UNIT REMOVAL AND OPC DRUM REPLACEMENT 1. Take out the development unit. (Refer to Development Unit Removal.) 2. Lower the transfer belt unit. 3. Take out the drum unit by holding the knob [A]. NOTE: Close the protective shutter [B] to protect the OPC drum from light when the drum unit is left outside the machine for servicing.
Page 274: Quenching Lamp Replacement
23 April 1993 DRUM UNIT 4.2 QUENCHING LAMP REPLACEMENT CN663 1. Remove the OPC drum. (Refer to Drum Unit Removal and OPC Drum Replacement.) NOTE: Wrap a protective sheet or a few sheets of paper around the drum to protect it from light. 2.
Page 275 DRUM UNIT 23 April 1993 4.3 GRID PLATE / CHARGE WIRE / WIRE CLEANER REPLACEMENT 1. Take out the main charge corona [A] (1 screw, 1 connector). 2. Remove the grid plate [B] (1 plastic screw, 4 hooks). NOTE: When installing the grid plate, do not tighten the plastic screw [C] too strongly.
Page 276 23 April 1993 DRUM UNIT 7. Remove the wire cleaner [A] (1 snap ring). 8. Install the wire cleaner and the charge corona wire. NOTE: Locate the joint part [B] of the wire in the rear end block as shown. Correctly set the wire between the wire cleaner pads.
Page 277 DRUM UNIT 23 April 1993 4.4 ERASE LAMP AND DRUM POTENTIAL SENSOR REPLACEMENT Front Side Rear Side 1. Open the drum shutter [A]. 2. While pushing the hook [B] to the front by using a small flat head screw driver [C], move up the front side of the erase lamp [D] as shown. 3.
Page 278: Cleaning Blade Replacement
23 April 1993 DRUM UNIT 4.5 CLEANING BLADE REPLACEMENT 1. Remove the OPC drum. (Refer to Drum Unit Removal and OPC Drum Replacement.) 2. Remove the cleaning blade [A] (2 screws). 3. Clean the entrance seal [B], side seals [C] and cleaning brush [D]. NOTE: When a vacuum cleaner is used, to protect the electrical parts from static electricity, disconnect the connector on the charge power pack and remove the ID sensor as follows:...
Page 279: Cleaning Brush Replacement
DRUM UNIT 23 April 1993 4.6 CLEANING BRUSH REPLACEMENT 1. Remove the cleaning blade. (Refer to Cleaning Blade Replacement.) 2. Remove the coupling gear [A] (1 screw). 3. Remove the grounding wire [B] (1 screw). 4. Remove the bushing [C]. 5.
Page 280: Pick-Off Pawl Replacement
23 April 1993 DRUM UNIT 4.7 PICK-OFF PAWL REPLACEMENT 1. While pulling the shaft [A] to the rear, turn the pick-off pawl about 45 degree clockwise (front view) and move up the pick-off pawl. 2. Replace the pick-off pawl. NOTE: Do not forget to hook the tension spring [B]. After replacement, check the smooth movement of the pick-off pawl.
Page 281 DRUM UNIT 23 April 1993 4.8 TONER COLLECTION COIL REPLACEMENT NOTE: Before starting the procedure remove the drum unit and the transfer belt unit to prevent toner from dropping in the machine. 1. Open the front doors then remove the toner collection bottle [A] (1 push-lock [B]).
Page 282 23 April 1993 DRUM UNIT 5. Open the main control board [A] (2 screws). 6. Remove the pulley bracket [B] and the timing belt [C] (1 screw). NOTE: When re-installing the timing belt [C], be sure that the belt is correctly hooked on the four pulleys as shown.
Page 283 DRUM UNIT 23 April 1993 9. Remove the upper right cover [A]. (Refer to Upper Right Cover Removal.) 10. Remove the pin [B] of the push-lock fixing the toner collection coil casing. NOTE: When removing the push-lock pin [B], catch the pin with needle-nose pliers [C] (accessing from the hole under the main control board, as shown).
Page 284 23 April 1993 DRUM UNIT 11. Remove the exhaust fan [A] (1 connector, 3 screws). 12. Remove the main motor [B] (1 connector, 4 screws). 13. Remove the toner collection coil casing [C] and put it on the sheet of paper.
Page 285: Ozone Filter Replacement
DRUM UNIT 23 April 1993 4.9 OZONE FILTER REPLACEMENT 1. Open the front doors and open the toner bottle holder. 2. Remove the transfer belt unit prop [A] (3 screws). 3. Replace the ozone filter [B]. NOTE: To install the transfer belt unit prop smoothly, set in order the lower pins [C], drive roller shaft [D], and the upper pins [E].
Page 286: Transfer Belt Unit
23 April 1993 TRANSFER BELT UNIT 5. TRANSFER BELT UNIT 5.1 TRANSFER BELT UNIT REMOVAL/INSTALLATION - Removal - 1. Turn off the main switch. 2. Remove the transfer belt unit prop [A] (3 screws). 3. Disconnect the connector [B]. 4. While turning the lever [C] counterclockwise, take out the transfer belt unit. NOTE: 1) Do not touch the transfer belt with oily hands.
Page 287 TRANSFER BELT UNIT 23 April 1993 2. Install the transfer belt unit prop (3 screws). NOTE: To install the transfer belt unit prop smoothly, set in order the lower pins [A], drive roller shaft [B], and the upper pins [C]. 3.
Page 288: Transfer Belt Replacement
23 April 1993 TRANSFER BELT UNIT 5.2 TRANSFER BELT REPLACEMENT 1. Take out the transfer belt unit. (Refer to Transfer Belt Unit Removal.) 2. While raising the knob [A], disconnect the two connectors [B]. 3. Turn the transfer belt upper unit [C] 90 degrees counterclockwise, then raise and remove it.
Page 289 TRANSFER BELT UNIT 23 April 1993 5. Turn the belt drive roller holder [A] clockwise (front view). 6. Replace the transfer belt [B]. NOTE: 1) Before installing the transfer belt, clean both sides of the transfer belt with a dry cloth (do not use alcohol). 2) Before installing the transfer belt, clean the following items with alcohol.
Page 290 23 April 1993 TRANSFER BELT UNIT 5.3 CLEANING BLADE REPLACEMENT 1. Remove the transfer belt. (Refer to Transfer Belt Replacement.) 2. Remove the cleaning blade [A] (2 screws). 3. Clean the seals [B]. NOTE: When using a vacuum cleaner, to protect the transfer power pack from static electricity, remove the power pack as follows: 1) Disconnect two connectors [C].
Page 291: Paper Feed
PAPER FEED 23 April 1993 6. PAPER FEED 6.1 PAPER TRAY UNIT REMOVAL To facilitate transportation, the upper part of the copier (copier main frame) [A] and the lower part of the copier (paper tray unit) [B] can be separated as follows: 1.
Page 292: Paper Tray Removal
23 April 1993 PAPER FEED 6.2 PAPER TRAY REMOVAL - Tandem Tray Removal (1st tray of the A096 copier) - 1. Open the left door and draw out the tandem tray. 2. While pushing the release lever [A] to the right with the head of the screw driver [B], slightly push the right tandem tray [C] to separate it from the left tandem tray [D].
Page 293 PAPER FEED 23 April 1993 - Universal Tray / 550 sheet tray/ Built-in LCT Removal (all trays of the A095 copier / 2nd, 3rd trays of the A096 copier) - 1. Draw out the tray. 2. Remove the tray from both guide Accurides as shown (4 screws). 5-68...
Page 294 23 April 1993 PAPER FEED 6.3 PAPER FEED ROLLERS REPLACEMENT 1. Turn off the main switch. 2. Remove the paper tray where the feed rollers belong to. (Refer to Paper Tray Removal.) 3. Remove the pick-up roller [A] (1 snap ring). 4.
Page 295: Tandem Rear Fence Drive Belt Removal
PAPER FEED 23 April 1993 6.4 TANDEM REAR FENCE DRIVE BELT REMOVAL (A096 copier only) 1. Draw out the tandem tray. 2. Separate the right tandem tray from the left tandem tray [A]. (Refer to Tandem Tray Removal.) 3. Remove the rear fence [B] on the left tandem tray (2 screws). 4.
Page 296 23 April 1993 PAPER FEED 7. Disconnect the three connectors [A]. 8. Loosen the tightener screw [B] and unhook the tension spring [C]. 9. Remove the timing belt [D]. NOTE: When installing the timing belt, hook the spring [C] then, tighten the screw [B].
Page 297: Tandem Side Fence Motor Removal
PAPER FEED 23 April 1993 6.5 TANDEM SIDE FENCE MOTOR REMOVAL (A096 copier only) 1. Open the side fences [A] and raise the bottom plate [B] of the right tandem tray. 2. Remove the lift arm [C] (2 screws). 3. Remove the cover [D] (1 screw). 4.
Page 298 23 April 1993 PAPER FEED 6.6 PAPER FEED TIMING ADJUSTMENT 10 mm 10 ± 5 mm 1) Paper feed timing adjustment for the 1st feed station 1. Place a white paper on the exposure glass so that there is a gap of 10 mm between the white paper [A] and the left scale [B].
Page 299 PAPER FEED 23 April 1993 7. For the first copy, touch the – key [A] or the + key [B] to adjust the white area width. 8. For the second copy, touch the – key [C] or the + key [D] to adjust the white area width.
Page 300 23 April 1993 PAPER FEED 3) Paper feed timing adjustment for the by-pass feed station 1. Set two sheets of paper on the by-pass feed table [A]. 2. Enter SP mode (refer to Service Program Access Procedure) and access SP Adjustment – PAGE 2. 3.
Page 301: Paper Feed Clutch Removal
PAPER FEED 23 April 1993 6.7 PAPER FEED CLUTCH REMOVAL 1. Turn off the main switch then open the right front door and remove the push-lock [A]. 2. Remove the toner collection bottle [B]. NOTE: If the LCT is installed, remove it from the copier. 3.
Page 302 23 April 1993 PAPER FEED 5. Remove the knobs [A] (1 screw each) then remove the right inner cover [B] (2 screws). 6. While holding the shaft [C] with an Allen key, remove the fixing screw [D], then remove the knob [E], 7.
Page 303 PAPER FEED 11. Fully draw out the paper tray 12. Remove the two screws [A] fixing the tray feed unit [B]. 14. Disconnect the connectors [C]. 15. Loosen the two Allen screws [D]. NOTE: When re-installing the tray feed clutch, set the stopper [F] of the clutch on the edge of the bracket [G] then fully push in the clutch on the feed roller shaft [H] and secure the Allen screws [D].
Page 304: By-Pass Feed Table Removal
23 April 1993 PAPER FEED 6.8 BY-PASS FEED TABLE REMOVAL 1. Remove the right inner cover. (Refer to Right Inner Cover Removal.) 2. Remove the total counter with bracket (1 screw, 1 connector). 3. Loosen the Allen screw [A] on the hinge. 4.
Page 305 PAPER FEED 23 April 1993 6.9 BY-PASS FEED ROLLERS REPLACEMENT 1. Open the by-pass feed table then remove the cover [A] (3 screws). 2. Replace the pick-up roller [B] (1 snap ring) and the feed roller [C] (1 snap ring). NOTE: The paper feed (pick-up, feed, separation) rollers used in the by-pass feed table and LCT are different from the paper feed rollers used in the 1st ~ 3rd feed units in the paper tray unit.
Page 306 23 April 1993 PAPER FEED 3. Remove the feed unit cover [A] as shown. 4. Replace the separation roller [B] (1 snap ring). 5-81...
Page 307 PAPER FEED 23 April 1993 6.10 BY-PASS PAPER SIZE SENSOR REPLACEMENT 1. Turn off the main switch. 2. Open the by-pass table and remove the feed unit cover. (Refer to Feed Unit Cover Removal.) 3. While pushing the hook [A] with the head of the flat head screw driver as shown, remove the table assembly [B] (2 screws, 1 connector [C]).
Page 308 23 April 1993 PAPER FEED 5. Re-install the by-pass paper size sensor then reassemble the by-pass feed table. NOTE: When installing the table assembly, route the wires [A] correctly as shown. The paper guides [B] must be in the lower position as shown. 6.
Page 309 PAPER FEED 23 April 1993 6.11 BY-PASS FEED CLUTCH REMOVAL 1. Remove the upper rear cover [A]. (Refer to Upper Rear Cover Removal.) 2. Lower the main control board [B] (2 screws). 3. Unhook the main control board bracket hinge [C]. 5-84...
Page 310 23 April 1993 PAPER FEED 4. Remove the by-pass feed motor [A] (2 screws). 5. Remove the clutch stopper [B] (1 screw). NOTE: When re-installing the by-pass feed clutch [C], set the pin [D] of the clutch in the cutout [E] of the stopper. 6.
Page 311: Registration Clutch Removal
PAPER FEED 23 April 1993 6.12 REGISTRATION CLUTCH REMOVAL 1. Lower then unhook the main control board bracket hinge. (Refer to By-Pass Feed Clutch Removal.) 2. Remove the clutch stopper [A] (1 screw). NOTE: When re-installing the registration clutch [B], set the pin [C] of the clutch in the cutout of the stopper [D].
Page 312 23 April 1993 PAPER FEED 6.13 PAPER DUST CLEANER REMOVAL 1. Remove the development unit. (Refer to Development Unit Removal.) 2. While pushing down the hook lever [A], remove the paper dust cleaner [B]. 3. Remove paper dust inside the paper dust cleaner and clean the inside of the cleaner with a dry cloth or a blower-brush.
Page 313: Registration Sensor Removal
PAPER FEED 23 April 1993 6.14 REGISTRATION SENSOR REMOVAL 1. Remove the right inner cover [A]. (Refer to Right Inner Cover Removal.) 2. Disconnect the connector [B]. 3. Pull out the registration sensor assembly [C]. 4. Clean the photo sensor [D] with a blower-brush. 5-88...
Page 314: Copier Feed Unit Removal
23 April 1993 PAPER FEED 6.15 COPIER FEED UNIT REMOVAL 1. Remove the development unit. (Refer to Development Unit Removal.) 2. Remove the right inner cover. (Refer to Right Inner Cover Removal.) 3. Remove the by-pass feed motor. (Refer to By-pass Feed Clutch Removal.) 4.
Page 315 PAPER FEED 23 April 1993 8. Remove the registration roller knob [A] (1 screw). 9. Remove the copier feed unit [B] (4 screws). NOTE: When installing the copier feed unit to the copier: 1) Do not pinch the harness. 2) Keep the duplex unit drawn out. 3) Fit the two cut outs [C] to the pins [D].
Page 316 23 April 1993 PAPER FEED 6.16 TANDEM FEED TRAY PAPER SIZE CHANGE NOTE: 1. At the factory, all paper trays (1st, 2nd and 3rd) are set as A4 sideways. At the customer’s request, change the paper size as follows. 2. For the 550 sheet fixed paper tray and the 1500 sheet built-in LCT, refer to the installation procedure section.
Page 317 PAPER FEED 23 April 1993 4. Re-install both side fences [A] to the appropriate position according to the paper size, as shown. NOTE: The position of the side fence holders [B] and the pins [C] on the lack gear differs according the paper size (from the outside pin: A4, 11", B5).
Page 318 23 April 1993 PAPER FEED - Used as fixed tray for paper longer than A4/Letter sideways - 1. Draw out the tandem tray. 2. Remove the rear and the front side fences [A] (1 screw and 1 push-lock pin each) on the right tandem tray. 3.
Page 319 PAPER FEED 23 April 1993 5. Change the position of the front and rear side fences [A] (2 screws each) and end fence [B] (2 screws) of the left tandem tray according to the paper size. 6. Enter SP mode (refer to Service Program Access Procedure) and access SP Special Features –...
Page 320 23 April 1993 PAPER FEED 6.17 UNIVERSAL TRAY PAPER SIZE CHANGE At the factory, the universal paper tray is set as A4/8 " x 11" sideways. Normally, paper size is changed by the customer by following the operating instructions. Only when the customer needs the A5/5 "...
Page 321: Fusing Unit Removal
FUSING UNIT 23 April 1993 7. FUSING UNIT 7.1 FUSING UNIT REMOVAL 1. Turn off the main switch. 2. Open the left front door. 3. Remove the stopper [A] (1 screw). 4. While releasing the lever [B], pull out the fusing unit as shown. NOTE: Hold the bottom of the fusing unit as shown.
Page 322: Fusing Thermistor Replacement
23 April 1993 FUSING UNIT 7.2 FUSING THERMISTOR REPLACEMENT 1. Remove the fusing unit. (Refer to Fusing Unit Removal.) 2. Remove the knob [A] (1 screw). 3. Remove the two screws fixing the fusing front cover [B]. 4. Pull the lever [C] then lower the cover [B] to unhook the fusing unit. 5.
Page 323: Fusing Thermofuse Replacement
FUSING UNIT 23 April 1993 7.3 FUSING THERMOFUSE REPLACEMENT 1. Remove the fusing unit upper cover. (Refer to Fusing Thermistor Replacement.) 2. Remove the terminal bracket [A] (2 screws, 1 hook). 3. Disconnect the two connectors [B]. 4. Replace the fusing thermofuse [C] (1 screw). NOTE: When re-assembling the fusing unit, secure the harness in the clamps correctly.
Page 324: Fusing Lamp Replacement
23 April 1993 FUSING UNIT 7.4 FUSING LAMP REPLACEMENT 1. Remove the fusing unit. (Refer to Fusing Unit Removal.) 2. Remove the terminal bracket [A] (2 screws). 3. Disconnect the front connector [B] and the rear connector [C]. 4. Remove the front fusing lamp holder [D] and the rear fusing lamp holder [E] (1 screw each).
Page 325: Hot Roller Replacement
FUSING UNIT 23 April 1993 7.5 HOT ROLLER REPLACEMENT 1. Remove the fusing lamp [A]. (Refer to Fusing Lamp Replacement.) 2. Lower the fusing exit assembly [B]. 3. Remove the upper stay [C] (4 screws). 4. Remove the upper entrance guide [D] (1 screw). 5-100...
Page 326 23 April 1993 FUSING UNIT 5. Lower both side pressure spring holders [A] by using the screw driver [B] as a lever. 6. Remove the front and rear C-rings [C], gear [D], antistatic spacers [E] isolating bushings [F] and bearings [G]. NOTE: When installing a new fusing roller: 1) Lubricate the inner and the outer surface of the isolating bushings [F] with BARRIERTA L55/2 grease.
Page 327 FUSING UNIT 23 April 1993 7.6 PRESSURE AND BEARING ROLLER REPLACEMENT 1. Remove the hot roller. (Refer to Hot Roller Replacement.) 2. Remove the lower fusing entrance guide [A] (2 screws). 3. Lift the pressure roller [B] and remove it. 4.
Page 328 23 April 1993 FUSING UNIT 7.7 FUSING STRIPPER PAWL REPLACEMENT 1. Turn off the main switch and pull out the fusing unit. 2. Lower the fusing exit assembly [A]. 3. Remove the two screws (the front screw [B] is a stepped screw) fixing the upper exit guide [C].
Page 329: Fusing Pressure Adjustment
FUSING UNIT 23 April 1993 7.8 FUSING PRESSURE ADJUSTMENT Rear Front NIP BAND WIDTH ADJUSTMENT STANDARD: 8.1 ± 0.8 mm 1. Make a black copy (sky shot, A3 / Double Letter paper). 2. As soon as the paper starts to exit, open the left door to stop the paper in the fusing unit.
Page 330 23 April 1993 FUSING UNIT 7.9 PAPER EXIT UNIT REPLACEMENT - Removal - 1. Remove the upper left cover. (Refer to Upper Left Cover Removal.) 2. Draw out the duplex unit [A]. 3. Remove the lever bracket [B] (2 screws). 4.
Page 331 FUSING UNIT 23 April 1993 - Installation - 1. Set the paper exit unit in the following order: 1) Set the drive shaft [A] on the left rail [B]. 2) Set the plate [C] on the right rail [D]. 3) Set the positioning pin [E] in the hole [F]. 2.
Page 332: Duplex Unit
23 April 1993 DUPLEX UNIT 8. DUPLEX UNIT 8.1 FEED ROLLER REPLACEMENT 1. Open the front doors and draw out the duplex unit. 2. Remove the duplex front cover [A] (3 screws). 3. Slide the lever [B] to the rear then open the duplex reverse assembly [C]. 4.
Page 333 DUPLEX UNIT 23 April 1993 6. Remove the harness bracket [A] (1 screw). 7. Remove the gear [B] (1 E-ring). 8. Remove the bushing [C] (1 E-ring). 9. Slide the feed roller shaft [D] to the rear then slide the feed roller [E] to the front and replace it as shown.
Page 334 23 April 1993 DUPLEX UNIT 8.2 SEPARATION BELTS REPLACEMENT 1. Open the front doors and draw out the duplex unit. 2. Remove the gear [A] (1 E-ring). 3. Remove the bracket [B] (1 screw) then remove the gear [C]. 4. Remove the gear [D] and the bushing [E] (1 E-ring). 5.
Page 335 DUPLEX UNIT 23 April 1993 7. Remove the bushing [A] (1 snap ring). 8. Remove the drive roller [B]. 9. Replace the three separation belts [C] as a set. NOTE: When setting the tension spring [D], set it on the hook [E] normally.
Page 336: Duplex Unit Removal
23 April 1993 DUPLEX UNIT 8.3 DUPLEX UNIT REMOVAL 1. Open the front doors and remove the left door. 2. Remove the right inner cover [A]. (Refer to the right inner cover removal.) 3. Draw out the duplex unit [B] until the stop position. 4.
Page 337 DUPLEX UNIT 23 April 1993 8.4 SEPARATION CLUTCH/TRANSPORT CLUTCH REMOVAL Before replacing both clutches, take out the duplex unit. (Refer to Duplex Unit Removal.) NOTE: When installing both clutches, be sure to set the stopper [A] to the projection [B]. - Separation Clutch - 1.
Page 338 23 April 1993 DUPLEX UNIT 8.5 JOGGER MOTOR REPLACEMENT 1. Take out the duplex unit. (Refer to the duplex unit removal.) 2. Remove the duplex front cover (3 screws). 3. Slide the lever [A] to the rear then open the separation belt unit [B]. 4.
Page 339 DUPLEX UNIT 23 April 1993 9. Remove the positioning roller drive gear [A] (1 E-ring). 10. Remove the bushing [B] (1 E-ring). 11. Remove the positioning roller assembly [C]. 12. Remove the front jogger fence [D] and the rear jogger fence [E] (1 screw each).
Page 340 23 April 1993 DUPLEX UNIT 14. Remove the drive wire stoppers [A]. 15. Unhook the tension spring [B] and remove the drive wire [C]. 16. Remove the E-ring [D] and slide the shaft [E] to the left. 17. Remove the jogger motor bracket [F] (1 screw). 18.
Page 341 DUPLEX UNIT 23 April 1993 - Jogger Drive Wire Installation - 1) Set the bead [A] which is closer to the red colored hook [B] in the hole [C] and install the stopper [D] (1 screw). 2) Round the drive wire twice around the drive motor pulley [E] as shown. 3) Move the rear jogger fence bracket [F] to the rear end position (until the bracket [F] touches the screw [G]) and keep this condition.
Page 342 23 April 1993 DUPLEX UNIT NOTE: 1) When installing the jogger fences, confirm if the two positioning pins [A] are correctly set in the two holes on the side fences after the screw is set. 2) When installing the positioning roller assembly, insert the plate [B] in the hole [C] on the rear frame, then set the plate on the lever [D].
Page 343: Copy Quality Adjustment
DUPLEX UNIT 23 April 1993 8.6 COPY QUALITY ADJUSTMENT 8.6.1 SP Adjustment Mode The copy quality adjustments in the table below can be performed by using the appropriate SP Adjustment mode. SP Adjustment Change Item Standard Default – PAGE Amount/1 step Leading edge 0 ±...
Page 344 23 April 1993 DUPLEX UNIT 1. Enter SP mode (refer to Service Program Access Procedure) and access SP Adjustment mode. 2. Access the appropriate page by touching the "Prev." [A] or "Next" [B] key. 3. Touch the "Copy in SP" key [C] then select the proper copy mode. 4.
Page 345 DUPLEX UNIT 23 April 1993 8.6.2 Side-to-side Registration Adjustment – Rough Adjustment – 1. Loosen the screws [A] for the tandem tray or built-in LCT, [B] for 550 sheets fixed tray or universal tray, or [C] for by-pass feed tray. 2.
Page 346 23 April 1993 DUPLEX UNIT 8.6.3 Uneven Exposure Adjustment When: If the exposure is uneven. Purpose: To maintain even exposure. Adjustment standard: The side-to-side variation of the gray scales on the test chart should be less than one level. How: Change the position of the exposure lamp or exposure adjustment wings to make light intensity from the exposure lamp even across its...
Page 347 DUPLEX UNIT 23 April 1993 4. Turn the screw [A] to correct the position of the filament. The left edge the exposure lamp [B] should be directly beneath the center of the sight hole [C] in the reflector cover. CAUTION: Do not touch the screw [D]. control data initial setting ( ~ SP Adjustment - PAGE 1).
Page 348 23 April 1993 DUPLEX UNIT 8.6.4 Image Density Adjustment When: The copy image density is already adjusted to the standard level at the factory, and process control maintains copy image density until the next PM. If the customer asks you to adjust the image density, it can be done by using the User Tool mode.
Page 349 DUPLEX UNIT 23 April 1993 8.6.5 Scanner Height Adjustment When: If optically skewed images appear after adjusting the 1st and 2nd scanner positions. Purpose: To maintain a proper copy image. How: Turn the 3rd scanner height adjusting cam. This changes the 3rd scanner’s height. 1.
Page 350 23 April 1993 DUPLEX UNIT 4. Peel off the cover seal [A]. 5. Loosen the Allen screw on the adjusting cam [B]. 6. Adjust the third scanner height by turning the adjusting cam. (This is a fine adjustment.) 5-125...
Page 351 DUPLEX UNIT 23 April 1993 7. If a fine adjustment is insufficient, make a rough adjustment then make the fine adjustment again. - Rough adjustment - 1) Remove the air inlet duct [A](1 screw). 2) Peel off the cover seal [B]. 3) Loosen the screws [C].
Page 352: Troubleshooting
SECTION 6 TROUBLESHOOTING...
Page 353: Service Call Conditions
12 April 1993 SERVICE CALL CONDITIONS 1. SERVICE CALL CONDITIONS 1.1 SUMMARY There are 4 levels of service call conditions. Level Definition Display The SC can only be reset SC display will not be canceled. by service representative (see note in the next page) to prevent the machine from being damaged.
Page 354 SERVICE CALL CONDITIONS 12 April 1993 NOTE: 1) If the problem is related to electrical circuit boards, first disconnect then reconnect the connectors before replacing the PCBs. 2) If the problem is related to motor lock, first check the mechanical load before replacing motors or sensors.
Page 355 12 April 1993 SERVICE CALL CONDITIONS 1.2 EXPOSURE SC101 - Exposure lamp malfunction - abnormal On/Off Definition: [level: A] During the lamp off condition, the optics control board detects a lamp voltage. Possible causes • Exposure lamp open • Triac shorted •...
Page 356 SERVICE CALL CONDITIONS 12 April 1993 SC121 - Scanner home position sensor abnormal - stays on Definition: [level: D] The scanner home position sensor does not detect the off condition even if the scanner leaves the scanner home position sensor by 120 mm. Possible causes: •...
Page 357 12 April 1993 SERVICE CALL CONDITIONS 1.4 LENS MAGNIFICATION SC140 - Lens vertical home position sensor abnormal - stays off Definition: [level: D] When the lens returns to the home position, the lens vertical home position sensor does not detect the on condition for 2 seconds or more, and more than twice.
Page 358 SERVICE CALL CONDITIONS 12 April 1993 SC143 - Lens horizontal home position sensor abnormal - stays on Definition: [level : D] When the lens leaves from the home position, the lens horizontal home potion sensor does not detect the off condition for 2.3 seconds or more, and more than twice.
Page 359 12 April 1993 SERVICE CALL CONDITIONS 1.5 OPTICS THERMISTOR SC190 - Optics thermistor open Definition: [level: D] The optics thermistor is open. Possible causes: • Optics thermistor open NOTE: When the optics thermistor is shorted, no SC code is indicated. The exhaust fan rotates quickly and continuously.
Page 360 SERVICE CALL CONDITIONS 12 April 1993 1.7 DEVELOPMENT SC341 - Development motor locked Definition: [level: D] Development motor lock signal stays low more than 1 second in development motor on condition. Possible causes: • Extra load in the development unit •...
Page 361 12 April 1993 SERVICE CALL CONDITIONS SC352 - Incomplete TD sensor initial setting Definition: [level: C] The output voltage of the TD sensor is higher than 2.6 V or lower than 2.4 V during the developer initial setting mode. to get 2.5 V for the TD sensor output is higher than 10 V or lower than 2 V.
Page 362 SERVICE CALL CONDITIONS 12 April 1993 ≥ 4 V) SC355 - Abnormal V detection (V Definition: [level: C] is 4 V or higher. Possible causes: • Toner density sensor defective • Toner concentration too low SC356 - Abnormal V detection (V <...
Page 363 12 April 1993 SERVICE CALL CONDITIONS SC361 - Incomplete drum potential sensor calibration Definition: [level: C] When the process control initial setting is performed and a development bias of -100 V or -800 V is applied to the drum shaft, the drum potential voltage is out of these ranges: 0.1 ≤...
Page 364: Transfer Current
SERVICE CALL CONDITIONS 12 April 1993 1.9 TRANSFER CURRENT SC402 - Transfer current leakage Definition: [level: D] When the transfer power pack output voltage exceeds 4.5 KV for 200 msec or more, the output current is multiplied by 0.8. If this condition occurs 11 time in a row, an SC is displayed.
Page 365: Paper Feed
12 April 1993 SERVICE CALL CONDITIONS 1.11 PAPER FEED SC500 - Abnormal manual feed drive motor speed Definition: [level : D] Lock signal stays low in the manual feed motor on condition for 1.0 second or more. Possible causes: • Manual feed motor defective SC501 - Abnormal paper feed drive motor speed Definition: [level: D]...
Page 366 SERVICE CALL CONDITIONS 12 April 1993 SC504 - Abnormal 3rd lift motor (1.5 K LCT motor for A096 copier) movement Definition: [level: B] The 3rd lift sensor detects the high condition for 10 seconds or more after the 3rd lift motor starts. The first time, after the paper tray is opened and closed, the 3rd lift motor starts again.
Page 367 12 April 1993 SERVICE CALL CONDITIONS SC510 - Abnormal tandem side fence home position detection - stays off Definition: [level: B] When the side fence goes back to the home position or the side fence drive motor works to open the fence, the side fence positioning sensor does not detect the on condition for 5 seconds or more.
Page 368 SERVICE CALL CONDITIONS 12 April 1993 SC523 - Abnormal jogger home position sensor detection - stays on Definition: [level: B] The jogger home position sensor does not detect the off condition for 1 second after its sensor detects the on condition in the initializing mode. Possible causes: •...
Page 369: System Control
12 April 1993 SERVICE CALL CONDITIONS SC545 - Low fusing temperature (detected by the main control board) SC546 - Low fusing temperature (detected by the optics control board) Definition: [level: A] The fusing temperature stays lower than 100 °C for 5 seconds after the machine becomes ready.
Page 370 SERVICE CALL CONDITIONS 12 April 1993 SC601 - Communication error (main control board and optics control board) Definition: [level: D] The main control board does not communicate with the optics control board. Possible causes: • Main control board defective • Optics control board defective •...
Page 371: Dual Job Feeder
12 April 1993 SERVICE CALL CONDITIONS SC621 - Communication error (main control board and sorter staplers (A374/A377)/finisher main board) Definition: [level: D] The main control board does not communicate with the sorter stapler (A374/A377)/finisher main board. Possible causes: • Main control board defective •...
Page 372 SERVICE CALL CONDITIONS 12 April 1993 SC731 - Abnormal bin drive (lift) motor movement (A374, A377 sorter staplers) Definition: [level: B] If the wheel sensor (bin lift timing sensors) is not off after 2 seconds from when the bin drive (lift) motor stars, jam "R2" is indicated. If the wheel sensor (bin lift timing sensors) is not on after 2 seconds from when the wheel sensor (bin lift timing sensors) detects off, jam "R2"...
Page 373 12 April 1993 SERVICE CALL CONDITIONS SC735 - Abnormal jogger motor movement (A374, A377 sorter staplers / A379 Finisher) Definition: [level: B] When the jogger moves back to the home position, the jogger home position sensor does not detect the on condition within 650 pulses. Then, a jam is indicated.
Page 374 SERVICE CALL CONDITIONS 12 April 1993 SC738 - Abnormal staple motor movement (A374, A377 sorter staplers) Definition: [level: B] The staple home position sensor does not detect the on condition within 600 msec after the motor starts. Then a jam is indicated. If this occurs twice, this SC is displayed.
Page 375 12 April 1993 SERVICE CALL CONDITIONS SC742 - Abnormal stack feed out motor movement (A379 finisher) Definition: [level: B] No encoder pulses is detected for 500 msec. or more. Possible causes: • Stack feed out motor defective 1.17 OTHERS SC900 - Total counter failure (staying in the off condition) Definition: [level: D] The total counter stays in the off condition.
Page 376: Electrical Component Defects
ELECTRICAL COMPONENT DEFECTS 23 April 1993 2. ELECTRICAL COMPONENT DEFECTS 2.1 SENSORS NOTE: All photo-interrupters go low (GND) when the actuator interrupts the gap between the LED and the photo transistor. Component Condition Symptom (when the main switch turns on) (Symbol) Open SC125 is displayed...
Page 377 23 April 1993 ELECTRICAL COMPONENT DEFECTS Component Condition Symptom (when the main switch turns on) (Symbol) Open "Paper Jam T" indicator is displayed even if Duplex Entrance there is no paper. Sensor 112-A7 Shorted Whenever a duplex copy is made, "Paper Jam (S-12) T"...
Page 378 ELECTRICAL COMPONENT DEFECTS 23 April 1993 Component Condition Symptom (when the main switch turns on) (Symbol) Open "Paper Jam C" indicator is displayed even if there is no paper. Registration 108-A7 (S-24) Shorted Whenever a copy is made, "Paper Jam C" occurs.
Page 379 23 April 1993 ELECTRICAL COMPONENT DEFECTS Component Condition Symptom (when the main switch turns on) (Symbol) Open "Add paper" indicator is displayed even if there is paper on the tray. 2nd Lift 401-B2 (S-36) Shorted The tray bottom plate locks at the upper position.
Page 380 ELECTRICAL COMPONENT DEFECTS 23 April 1993 Component Condition Symptom (when the main switch turns on) (Symbol) Left Tandem Open The rear fence moves back and forth Paper End continuously. (A096 copier 404-B12 Shorted The paper on the left tray is not moved to the only) right tray.
Page 381 23 April 1993 ELECTRICAL COMPONENT DEFECTS 2.2 SWITCHES Component CN No. Condition Symptom "Open the by-pass tray" indicator is displayed even if the Open By-Pass Table by-pass tray is opened. Print 108-B11 key stays red. (SW-1) By-pass feed motor Shorted continuously turns.
Page 382 ELECTRICAL COMPONENT DEFECTS 23 April 1993 2.3 FUSES 2.3.1 DC Power Supply Board Component Condition Symptom Power is not provided when the main switch FU801 (125 V, 10 A) Open is on (No indicator displayed on the operation panel). Power is not provided when the main switch FU802 (125 V, 5 A) Open is on (No indicator displayed on the...
Page 383 PREVENTIVE MAINTENANCE SCHEDULE 16 May 1994 Development Unit NOTE 8: (1) Lubricate the bias terminal (sleeve roller shaft) [A] with Grease: KS660: SHIN-ETSU CAUTION: Use only conductive grease, otherwise bias voltage will not be properly applied to development rollers. 4-64-1...

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