Related Manuals for Ricoh IS450S
Summary of Contents for Ricoh IS450S
- Page 1 HS2P (Machine Code: G407/G408/G410/G411) Service Manual Issued on 22nd December 1998 Ricoh Co., Ltd...
- Page 2 IMPORTANT SAFETY NOTICES 1. Before disassembling or assembling parts of the scanner and peripherals, make sure that the scanner power cord is unplugged. 2. The wall outlet should be near the scanner and easily accessible. 3. The output voltage of the PSU (Power Supply Unit) can be either 100 ~ 120 Vac or 220 ~ 240 Vac, without any adjustment.
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Page 3: Table Of Contents
TABLE OF CONTENTS 1. OVERALL MACHINE INFORMATION ........1-1 1.1 SPECIFICATIONS..................1-1 1.1.1 MAIN BODY..................1-1 1.1.2 ENDORSER ..................1-2 1.2 COMPONENT LAYOUT ................1-3 1.2.1 FRONT VIEW ...................1-3 1.2.2 REAR VIEW..................1-4 1.2.3 ADF ....................1-5 1.3 DRIVE LAYOUT ..................1-6 1.3.1 SCANNER ..................1-6 1.3.2 ADF ....................1-7 1.4 ELECTRICAL COMPONENT LAYOUT .............1-8 1.4.1 SCANNER ..................1-8 1.4.2 ADF ....................1-9... - Page 4 3. INSTALLATION................3-1 3.1 ENVIRONMENT ..................3-1 3.1.1 PRECAUTIONS................3-1 3.1.2 ENVIRONMENTAL CONDITIONS ...........3-1 3.1.3 MACHINE LEVEL ................3-1 3.1.4 MINIMUM SPACE REQUIREMENTS..........3-1 3.1.5 POWER REQUIREMENTS ..............3-2 3.2 SCANNER INSTALLATION...............3-2 3.3 IPU UNIT INSTALLATION.................3-2 3.4 ENDORSER UNIT INSTALLATION............3-3 3.4.1 ACCESSORY CHECK..............3-3 3.4.2 INSTALLATION PROCEDURE ............3-4 3.4.3 STAMP DENSITY ADJUSTMENT PROCEDURE ......3-6 3.5 RED LAMP UNIT INSTALLATION.............3-7 3.5.1 ACCESSORY CHECK..............3-7...
- Page 5 5.4.2 DOCUMENT TABLE POSITION SENSOR........5-11 5.4.3 PICK-UP CLUTCH/DOCUMENT TABLE LIFT CLUTCH ....5-12 5.5 SCANNER ....................5-13 5.5.1 EXPOSURE GLASS ...............5-13 5.5.2 EXPOSURE LAMP .................5-14 5.5.3 SBU/LAMP STABILIZER/SCANNER MOTOR/PSU .......5-15 5.5.4 IOB ....................5-16 5.5.5 SOP ....................5-17 5.5.6 HOME POSITION SENSOR............5-17 5.5.7 ADF INTERLOCK SWITCH ............5-18 5.5.8 SCANNER WIRE................5-19 5.6 PCB ......................5-22 5.6.1 SCU/RCU/IPU ................5-22...
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Page 6: Overall Machine Information
22 December 1998 SPECIFICATIONS 1. OVERALL MACHINE INFORMATION 1.1 SPECIFICATIONS 1.1.1 MAIN BODY Scanning method: Flat-bed with ADF Book scan: Horizontal: Max. 298 mm [11.7"] Vertical: Max. 432 mm [17.0"] ADF: Document size: Width: 69 ~ 298 mm [2.7" ~ 11.7"] Length: 120 ~ 2,000 mm [4.7"... -
Page 7: Endorser
SPECIFICATIONS 22 December 1998 Operating environment: Temperature: 10 to 32°C [50 to 90°F] Humidity: 20 to 80% RH Weight: Simplex Model: Less than 25 kg [55.1 lb.] Duplex Model: Less than 26 kg [57.3 lb.] (Add 1 kg [2.2 lb.] when the Endorser is installed.) Dimensions (W x D x H): 470 x 677 x 278 mm [18.5"... -
Page 8: Component Layout
22 December 1998 COMPONENT LAYOUT 1.2 COMPONENT LAYOUT 1.2.1 FRONT VIEW G411V500.WMF Name Function Platen cover Covers the document and serves as a neutral background for documents placed on the main exposure glass. ADF exposure cover Covers the scanner and closes the ADF exposure cover interlock switch. -
Page 9: Rear View
COMPONENT LAYOUT 22 December 1998 1.2.2 REAR VIEW G411V501.WMF Name Function Reset switch If this is pressed, the machine is reset. DIP switches Used to select various scanning modes and test modes. Interface for reverse side Interface for the video signal during reverse side scanning scanning. -
Page 10: Adf
22 December 1998 COMPONENT LAYOUT 1.2.3 ADF G411V502.WMF Name Function Automatically feeds multi-page documents into the scanner. Document table Documents to be scanned using the ADF are placed here. Document guides Used to properly align the documents placed in the input tray. -
Page 11: Drive Layout
DRIVE LAYOUT 22 December 1998 1.3 DRIVE LAYOUT 1.3.1 SCANNER G411V503.WMF Name Function First scanner Moves the exposure lamp along the document and sends the light reflected from the document to the 2nd scanner by means of a mirror. Second scanner Moves to keep the distance between the exposure lamp and the CCD constant, and sends light reflected from the 1st scanner to the CCD. -
Page 12: Adf
22 December 1998 DRIVE LAYOUT 1.3.2 ADF G411V507.WMF Name Function Feed roller Feeds the top page of the original into the ADF. Picks up and transports the top page of the original on Pick-up roller the document table. Separation roller Stops the lower pages of the original while allowing the top one to pass. -
Page 13: Electrical Component Layout
ELECTRICAL COMPONENT LAYOUT 22 December 1998 1.4 ELECTRICAL COMPONENT LAYOUT 1.4.1 SCANNER G411V504.WMF Name Function Home position sensor Detects whether the first scanner is at the home position. Controls the overall scanner function. Lamp Stabilizer Provides ac power to the exposure lamp. Contains the CCD, and outputs a video signal to the SCU. -
Page 14: Adf
22 December 1998 ELECTRICAL COMPONENT LAYOUT 1.4.2 ADF G411V505.WMF Name Function ADF interlock switch Detects whether the ADF cover and platen cover are open or closed; cuts the power supply to the machine. Paper transport motor Drives the paper transport drum. Feed sensor Detects when a document is just before the feeding position. -
Page 15: Detailed Section Descriptions
22 December 1998 INITIALIZATION 2. DETAILED SECTION DESCRIPTIONS 2.1 INITIALIZATION Power on User Level: System error User Level: System error Is the memory OK? Service Level: Memory error Service Level: Memory error Initialize the I/O port, E P R O M , IPU, and memory controller Initialize the scanner motor Is the... - Page 16 INITIALIZATION 22 December 1998 During power-up initialization, the scanner performs the following steps (refer to the flow chart on the previous page). 1. Tests the ROM checksum and makes a RAM read/write test. If the CPU cannot test these, the CPU determines that a memory error has occurred. 2.
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Page 17: Scanner Mechanisms
22 December 1998 SCANNER MECHANISMS 2.2 SCANNER MECHANISMS 2.2.1 BOOK MODE Overview G411D521.WMF The exposure lamp (a xenon lamp in this model) [A] illuminates the original. The image is reflected onto a CCD (charge coupled device) [B] via the 1st, 2nd, and 3rd mirrors, and through the lens [C]. - Page 18 SCANNER MECHANISMS 22 December 1998 Scanner Drive G411D522.WMF The scanner drive motor [A] (a stepper motor) drives the 1st and 2nd scanners [B, C] through the timing belt [D], scanner drive pulley [E], scanner drive shaft [F], and two scanner wires [G]. The IOB board drives the scanner drive motor.
- Page 19 22 December 1998 SCANNER MECHANISMS Basic Scanning Procedure When the scan command is received from the host computer, the scanner starts scanning as explained in the following steps. G411D524.WMF Initialization The scanner checks the home position, scanner cover, and memory. If an error is detected, the scanner motor will stop.
- Page 20 SCANNER MECHANISMS 22 December 1998 Optional Steps (Optional IPU Board) Size Detection If selected, this is done after the ‘Initialization’ step. 1) Main Scan Direction (Document Width) The first scanner moves to the book mode standard position ([F] on the previous page).
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Page 21: Adf Mode
22 December 1998 SCANNER MECHANISMS 2.2.2 ADF MODE Overview G411D517.WMF When the originals are placed on the document table [A], the document sensor [B] detects them. The pick-up roller [C] picks up the originals and transports them to the feed roller [D]. The separation roller [E] turns in the opposite direction to the feed roller. - Page 22 SCANNER MECHANISMS 22 December 1998 Basic Scanning Procedure When the scanner receives the ADF scanning command, the scanner scans the original as described below. 1) ADF Mode The scanner performs the home position check and the shading process. If a home position error is detected, the scanner [K] will stop immediately.
- Page 23 22 December 1998 SCANNER MECHANISMS Document Table Lift G411D518.PCX The lift mechanism consists of the document table lift clutch [A], the lift shaft [B], the document table position sensor [C], and the sensor actuator on the gear [D]. In standby mode, the bend in the lift shaft [H] is pointing downwards and the actuator is just inside the sensor.
- Page 24 SCANNER MECHANISMS 22 December 1998 G411D519.WMF When the first original is being fed, the bend in the lift shaft is pointing up, and the spring is at maximum compression. As sheets of the document are scanned, the spring pushes the document table upwards so that the top of the stack is always against the pick-up roller.
- Page 25 22 December 1998 SCANNER MECHANISMS Original Feed and Separation G411D520.WMF To feed the original, the paper feed motor and the paper transport motor (which drives the paper transport drum) turn on. The paper feed motor drives the pick-up roller [A] through a train of gears and the pick-up clutch [B]. The pick-up clutch turns on to feed the top sheet of the original.
- Page 26 SCANNER MECHANISMS 22 December 1998 Optional Steps Size Detection G411D523.WMF If selected, this is done after document table lift/paper feed. 1) Main Scan Direction (Document Width) This function will be available when the optional IPU board is installed. First of all, the original is fed to the scan ready position between the read sensor [B] and the size detection position [C].
- Page 27 22 December 1998 SCANNER MECHANISMS Read Size Command If selected, this is done after document table lift/paper feed. If the scanner receives a Read Size command in ADF mode, it detects the document size in the main scan direction as described on the previous page. The scanner sends the width data to the host computer.
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Page 28: Paper Misfeed Detection
PAPER MISFEED DETECTION 22 December 1998 PAPER MISFEED DETECTION Start M A X R E A D Paper Feed Motor O F F Pick-up Clutch Document Table Lift Clutch Document Table Position Sensor Document Sensor Original End M A X R E A D Paper Transport O F F... - Page 29 22 December 1998 PAPER MISFEED DETECTION J1: The leading edge of the original does not reach the feed sensor within the time required for feeding the distance between the pick-up roller and the feed sensor + 150 mm after the pick-up clutch turned on. J2: The leading edge of the original does not reach the read sensor within the time required for feeding the distance between the feed sensor and the read sensor + 150 mm after the feed sensor was activated.
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Page 30: Image Processing
IMAGE PROCESSING 22 December 1998 2.4 IMAGE PROCESSING 2.4.1 OVERVIEW (Duplex model only) C C D S C U R C U Memory D R A M Control S C S I Memory Control Control D R A M G411D508.WMF The CCD generates two analog video signals. -
Page 31: Sbu
22 December 1998 IMAGE PROCESSING 2.4.2 SBU Analog A/D 1 8 bit data Processing IC1 Analog A/D 2 8 bit data Processing IC2 G411D507.WMF The CCD converts the light reflected from the document into an analog signal. The CCD line has 5,000 pixels and the resolution is 400 dpi (15.7 lines/mm). The CCD has two output lines, for odd and even pixels. -
Page 32: Ipu (Image Processing Unit)
IMAGE PROCESSING 22 December 1998 2.4.3 IPU (IMAGE PROCESSING UNIT) Overview Opional Analog O d d Processing IC 1 M e m o r y Selector S C S I S C S I Controller Analog E v e n Processing IC 2 S B U... - Page 33 22 December 1998 IMAGE PROCESSING Image processing path The following image processing is for the scanner (simplex model), not including the optional IPU. The image processing for each of these units is explained in separate sections. However, when the optional IPU is installed, the IPU IC on the SCU only does the shading.
- Page 34 IMAGE PROCESSING 22 December 1998 Gamma ( γ γ ) Correction The gamma curve corrects the response of the CCD to grayscales in the original. Grayscale Processing This process generates up to 256 image density levels for each pixel. Dithering Dither processing produces good quality grayscale images of photo originals.
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Page 35: Reverse Side Scanning
22 December 1998 REVERSE SIDE SCANNING 2.5 REVERSE SIDE SCANNING 2.5.1 OVERVIEW G411D516.WMF The CIS (Contact Image Sensor) unit [A], which is in the document exit area, scans the reverse side of the document. The front side of the document is scanned first. Then the document goes to the reverse side scanning area. -
Page 36: Cis (Contact Image Sensor) Unit
REVERSE SIDE SCANNING 22 December 1998 2.5.2 CIS (CONTACT IMAGE SENSOR) UNIT G411D513.WMF G411D528.WMF The CIS unit consists of the LED array (68 chips/line x 2 lines) [A], rod lens array [B], five CCDs [C], and the CIS drive board [D] (this contains the CCD drive circuit, analog processing circuit, A/D converter, shading correction IC, and LED drive circuit). -
Page 37: Image Scanning
22 December 1998 REVERSE SIDE SCANNING 2.5.3 IMAGE SCANNING Analog Processing Circuit Analog R C U S C U Processing Circuit O d d Analog Shading M e m o r y Processing S C S I S C S I Correction Circuit Controller... -
Page 38: Endorser Unit
ENDORSER UNIT 22 December 1998 2.6 ENDORSER UNIT 2.6.1 OVERVIEW G411D516.WMF G411D514.WMF The endorser unit [A] is located just before the exit roller [B]. The endorser unit prints up to 19 characters (which are input using the scanner driver) at the trailing edge of the document. -
Page 39: Endorser Unit
22 December 1998 ENDORSER UNIT 2.6.2 ENDORSER UNIT G411D515.WMF The endorser unit consists of the endorser motor [A], clutch [B], character belt [C], hammer unit [D], and ink roller [E]. The endorser motor drives the character belt and hammer unit and operates the hammer [F]. -
Page 40: Low Power Mode
LOW POWER MODE 22 December 1998 2.7 LOW POWER MODE 15 min. 1 2 W Operation Stand-by mode L o w p o w e r m o d e G411D525.WMF When the scanner has been idle for 15 minutes (this interval cannot be adjusted), the scanner automatically enters low power mode. -
Page 41: Main Pcbs And Their Functions
22 December 1998 MAIN PCBS AND THEIR FUNCTIONS 2.8 MAIN PCBs AND THEIR FUNCTIONS 2.8.1 BOARD STRUCTURE Endorser Unit Clutches Sensors A D U CIS Unit Motors A D F Main F r a m e R C U S B U Operation Panel Scanner... -
Page 42: Scu (Scanner Control Unit)
MAIN PCBS AND THEIR FUNCTIONS 22 December 1998 2.8.2 SCU (SCANNER CONTROL UNIT) Optional IPU R C U S C U O d d S E L M e m o r y S C S I E v e n Controller Controller O S C... -
Page 43: Iob (Input/Output Board)
22 December 1998 MAIN PCBS AND THEIR FUNCTIONS 2.8.3 IOB (INPUT/OUTPUT BOARD) I O B S B U Scanner Scanner Motor Driver Motor H.P Sensor Lamp Driver Stabilizer Exposure Lamp Driver Operation Panel + 5V P S U + 12V Driver + 24V A D U... -
Page 44: Adu (Adf Drive Unit)
MAIN PCBS AND THEIR FUNCTIONS 22 December 1998 2.8.4 ADU (ADF DRIVE UNIT) A D U Paper Transport Motor Driver Motor Paper Motor Driver Feed Motor + 5V + 24V ADU Clutches + 12V - 12V Sensors + 5V E D U + 24V ADU + 5V + 12V... -
Page 45: Installation
22 December 1998 ENVIRONMENT 3. INSTALLATION 3.1 ENVIRONMENT 3.1.1 PRECAUTIONS Please observe the following precautions in order to ensure safe operation of the scanner and to realize its full performance. • Ambient illumination must be less than 2,000 lux (do not expose to direct sunlight). -
Page 46: Power Requirements
SCANNER INSTALLATION 22 December 1998 3.1.5 POWER REQUIREMENTS CAUTION 1. Be sure to ground the scanner. 2. Make sure the plug is firmly inserted in the outlet. 3. Avoid multi-wiring. 1. Input voltage level: • 102 to 138 V ac (45 to 65 Hz) •... -
Page 47: Endorser Unit Installation
22 December 1998 ENDORSER UNIT INSTALLATION 3.4 ENDORSER UNIT INSTALLATION 3.4.1 ACCESSORY CHECK Check the quantity and condition of the accessories in the box against the following list: Description Q’ty 1. Endorser Unit ................. 1 2. Solenoid Ass’y................ 1 3. EDU Board ................1 4. -
Page 48: Installation Procedure
ENDORSER UNIT INSTALLATION 22 December 1998 3.4.2 INSTALLATION PROCEDURE 1. Open the ADF cover [A]. Remove the ADF upper cover [B] (2 screws), ADF right cover [C] (1 screw), and the endorser cover [D]. NOTE: Remove the right cover by carefully lifting it from the rear. - Page 49 22 December 1998 ENDORSER UNIT INSTALLATION 4. Install the solenoid assembly [I] as shown (3 screws). G514I504.WMF 5. Install the clamp [J] and connect the three cables [K] to the EDU board [L]. 6. Install the core [M]. G514I505.WMF 7. Open the platen cover. Install the endorser unit [N], as shown (1 connector).
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Page 50: Stamp Density Adjustment Procedure
ENDORSER UNIT INSTALLATION 22 December 1998 3.4.3 STAMP DENSITY ADJUSTMENT PROCEDURE 1. Open the ADF cover [A]. Remove the ADF upper cover [B] (2 screws), ADF right cover [C] (1 screw), and the endorser cover [D]. NOTE: Remove the right cover by carefully lifting it from the rear. -
Page 51: Red Lamp Unit Installation
22 December 1998 RED LAMP UNIT INSTALLATION 3.5 RED LAMP UNIT INSTALLATION 3.5.1 ACCESSORY CHECK Check the quantity and condition of the accessories in the box against the following list: Description Q’ty 1. Exposure Lamp ..............1 2. Installation Procedure............. 1... -
Page 52: Installation Procedure
RED LAMP UNIT INSTALLATION 22 December 1998 3.5.2 INSTALLATION PROCEDURE 1. Remove the rear cover [A] (3 screws). G514I500.WMF 2. Remove the stopper brackets [B]. 3. Remove the pins [C]. G514I510.WMF... - Page 53 22 December 1998 RED LAMP UNIT INSTALLATION 4. Open the platen cover and remove the lamp cover [D] (2 screws). G514I508.WMF 5. Remove the exposure lamp [E] (1 screw). G514I509.WMF 6. Install the red lamp (1 screw, 1 connector) in the place of the exposure lamp. 7.
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Page 54: Service Level Functions
22 December 1998 DIP SWITCH SETTINGS 4. SERVICE LEVEL FUNCTIONS 4.1 DIP SWITCH SETTINGS The factory default position of the dip switches is indicated in the diagram below. After changing a dip switch setting, either switch the power off and then on again, or press the reset switch. - Page 55 DIP SWITCH SETTINGS 22 December 1998 Dip Switch Item Contents ADF counter The number of pages scanned in ADF mode is indication indicated through a combination of the SCSI ID rotary switch position and the LEDs; refer to Table E later in this section.
- Page 56 22 December 1998 DIP SWITCH SETTINGS Table B: Component Test Mode SCSI ID Rotary Switch No. Contents All components off Exposure lamp on/off * Document table lift clutch on/off * Pick-up clutch on/off * CIS LEDs on/off * Endorser solenoid * Cooling fan motor on/off Not used Not used...
- Page 57 DIP SWITCH SETTINGS 22 December 1998 Table D: Self Diagnostic Mode During the self-diagnostic mode, the scanner performs the following tests. 1) Home position error check 2) Exposure lamp error check 3) White level error check 4) Document table error check 5) SCU error check 6) RCU error check 7) IPU error check...
- Page 58 22 December 1998 DIP SWITCH SETTINGS LED Indication Table LEDs Counter Value Power On Machine Busy Document in Error (Green) (Green) Place (Green) (Red) — — — — — — — — — — — — — — — — —...
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Page 59: Leds/Test Points
LEDS/TEST POINTS 22 December 1998 4.2 LEDs/TEST POINTS 4.2.1 LEDs SCU/LEDs Number Monitored Signal LED1 +5VS LED2 +5VE LED3 CPU clock 4.2.2 TEST POINTS Number Monitored Signal TP301 +24 V TP302 –12 V TP303 +12 V TP304 TP305 +5VE TP308 +5VS TP309 4.3 SPECIAL TOOLS... -
Page 60: Replacement And Adjustment
22 December 1998 COVERS 5. REPLACEMENT AND ADJUSTMENT CAUTION Before starting disassembly, be sure to turn off the main switch and disconnect the power cord and interface cable(s) for safety. 5.1 COVERS 5.1.1 ADF EXTERIOR G411R500.WMF 1. Open the ADF cover [A]. 2. -
Page 61: Adf Cover
COVERS 22 December 1998 5.1.2 ADF COVER G411R501.WMF G411R502.WMF 1. Remove the ADF upper and ADF right cover (see ADF Exterior). 2. Remove the rear cover (see Scanner Exterior/Operation Panel). 3. Open the platen cover vertically (see Exposure Glass). 4. Remove the spring [A]. 5. -
Page 62: Scanner Exterior/Operation Panel
22 December 1998 COVERS 5.1.3 SCANNER EXTERIOR/OPERATION PANEL G411R503.WMF G411R504.WMF 1. Remove the operation panel [A] (1 screw). 2. Remove the front cover [B] (3 screws). 3. Remove the left cover [C] (2 screws). 4. Remove the right cover [D] (2 screws). 5. -
Page 63: Adf And Upper Side
ADF AND UPPER SIDE 22 December 1998 5.2 ADF AND UPPER SIDE 5.2.1 DOCUMENT SENSOR G411R505.WMF 1. Remove the ADF upper cover (see ADF Exterior). 2. Remove the document sensor [A] (1 connector, 2 screws). 5.2.2 SEPARATION UNIT G411R506.WMF 1. Remove the ADF upper, ADF left, and ADF right cover (see ADF Exterior). 2. -
Page 64: Document Table Assembly
22 December 1998 ADF AND UPPER SIDE 5.2.3 DOCUMENT TABLE ASSEMBLY G411R507.WMF 1. Remove the separation unit (See Separation Unit). 2. Remove the document table assembly [A] (3 screws). 5.2.4 CIS G411R508.WMF 1. Remove the document table assembly (See Document Table Assembly). 2. -
Page 65: Scanning Guide Plate
ADF AND UPPER SIDE 22 December 1998 5.2.5 SCANNING GUIDE PLATE G411R509.WMF 1. Remove the ADF upper, ADF left, and ADF right cover (See ADF Exterior). 2. Remove the scanning guide plate [A] (2 screws). 5.2.6 FEED SENSOR G411R510.WMF 1. Open the ADF cover [A]. 2. -
Page 66: Read Sensor
22 December 1998 ADF AND UPPER SIDE 5.2.7 READ SENSOR G411R511.WMF 1. Remove the rear cover (See Scanner Exterior/Operation Panel). 2. Remove the read sensor [A] (1 connector, 1 screw). 5.2.8 FEED-OUT SENSOR G411R512.WMF 1. Remove the feed-out cover [A] (2 screws). 2. -
Page 67: Paper Transport Drum
ADF AND UPPER SIDE 22 December 1998 5.2.9 PAPER TRANSPORT DRUM G411R513.WMF G411R514.WMF G411R515.WMF 1. Remove the separation unit (see Separation Unit). 2. Remove the paper feed motor (see Paper Feed Motor). 3. Remove the ADU (see ADU/Paper Transport Motor). 4. -
Page 68: Adf And Right Side
22 December 1998 ADF AND RIGHT SIDE 5.3 ADF AND RIGHT SIDE 5.3.1 PAPER FEED MOTOR G411R516.WMF 1. Remove the ADF upper and ADF right cover (see ADF Exterior). 2. Remove the paper feed motor [A] (1 connector, 3 screws). 5.3.2 EDU G411R517.WMF 1. -
Page 69: Endorser Solenoid
ADF AND RIGHT SIDE 22 December 1998 5.3.3 ENDORSER SOLENOID G411R518.WMF 1. Remove the ADF upper and ADF right cover (see ADF Exterior). 2. Remove the endorser solenoid [A] (1 connector, 3 screws). 5.3.4 RELAY SENSOR G411R519.WMF 1. Remove the ADF upper and ADF right cover (see ADF Exterior). 2. -
Page 70: Adf And Left Side
22 December 1998 ADF AND LEFT SIDE 5.4 ADF AND LEFT SIDE 5.4.1 ADU/PAPER TRANSPORT MOTOR G411R520.WMF 1. Remove the ADF upper and ADF left cover (see ADF Exterior). 2. Remove the ADU [A] (10 connectors, 3 screws). 3. Remove the paper transport motor [B] (1 connector, 3 screws). 5.4.2 DOCUMENT TABLE POSITION SENSOR G411R521.WMF 1. -
Page 71: Pick-Up Clutch/Document Table Lift Clutch
ADF AND LEFT SIDE 22 December 1998 5.4.3 PICK-UP CLUTCH/DOCUMENT TABLE LIFT CLUTCH G411R522.WMF 1. Remove the ADF upper and ADF left cover (see ADF Exterior). 2. Remove the stopper bracket [A] (2 screws). 3. Remove the pick-up clutch [B] (1 connector). 4. -
Page 72: Scanner
22 December 1998 SCANNER 5.5 SCANNER 5.5.1 EXPOSURE GLASS G411R514.WMF G411R523.WMF 1. Remove the rear cover (See Scanner Exterior/Operation Panel). 2. Remove the stopper brackets [A] (2 screws). 3. Remove the pins [B]. 4. Open the platen cover vertically. 5. Remove the lamp cover [C] (2 screws). 6. -
Page 73: Exposure Lamp
SCANNER 22 December 1998 5.5.2 EXPOSURE LAMP G411R524.WMF 1. Remove the exposure glass (see Exposure Glass). 2. Slide the 1st scanner to the cutout [A] in the right frame. 3. Remove the exposure lamp [B] (1 connector, 1 screw). 5-14... -
Page 74: Sbu/Lamp Stabilizer/Scanner Motor/Psu
22 December 1998 SCANNER 5.5.3 SBU/LAMP STABILIZER/SCANNER MOTOR/PSU G411R525.WMF G411R526.WMF G411R527.WMF G411R528.WMF 1. Remove the exposure glass (see Exposure Glass). 2. Remove the lens cover [A] (4 screws). 3. Disconnect the flexible cable [B] 4. Remove the SBU [C] (4 screws). 5. -
Page 75: Iob
SCANNER 22 December 1998 5.5.4 IOB G411R529.WMF 1. Remove the exposure glass (see Exposure Glass). 2. Remove the lens cover (see SBU/Lamp Stabilizer/Scanner Motor/PSU). 3. Remove the PCB cover [A] (6 screws). 4. Remove the IOB [B] (5 connectors, 4 screws). 5-16... -
Page 76: Sop
22 December 1998 SCANNER 5.5.5 SOP G411R538.WMF 1. Remove the operation panel and the front cover (see Scanner Exterior/Operation Panel). 2. Remove the SOP (1 connector). 5.5.6 HOME POSITION SENSOR G411R530.WMF 1. Remove the right cover (see Scanner Exterior/Operation Panel). 2. -
Page 77: Adf Interlock Switch
SCANNER 22 December 1998 5.5.7 ADF INTERLOCK SWITCH G411R531.WMF 1. Remove the rear cover (see Scanner Exterior/Operation Panel). 2. Remove the ADF interlock switch [A] (1 connector, 1 screw). 5-18... -
Page 78: Scanner Wire
22 December 1998 SCANNER 5.5.8 SCANNER WIRE G411R532.WMF G411R533.WMF 1. Remove the exposure glass (see Exposure Glass). 2. Remove the stopper brackets [A] (1 screw each). 3. Remove the ADF [B] (4 connectors, 4 screws). 4. Remove the operation panel, front cover, right cover, and left cover (see Scanner Exterior/Operation Panel). - Page 80 22 December 1998 SCANNER G411R535.WMF 18. Install the 1st scanner and adjust its position with the scanner positioning tools (P/N A0069104) [G]. 19. Secure the 1st scanner with the scanner wire bracket [H] (1 screw each). 20. Remove the positioning tools. After sliding the scanner to the front and back several times, set the positioning tools to check the scanner wire bracket and tension bracket again.
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Page 81: Pcb
22 December 1998 5.6 PCB 5.6.1 SCU/RCU/IPU G411R537.WMF 1. Remove the SCU assembly [A] (2 screws). 2. Remove the RCU [B] (3 screws). 3. Remove the IPU [C] (1 screw). NOTE: When replacing the SCU, put the old ROM (IC31) on the new SCU. 5-22... -
Page 82: Troubleshooting
22 December 1998 SELF-DIAGNOSTICS 6. TROUBLESHOOTING 6.1 SELF-DIAGNOSTICS The scanner automatically performs a series of self-diagnostic checks each time the power is turned on. If an error is detected, it is displays the type of error using the four LEDs on the scanner. See “Detailed Section Descriptions - Initialization” for more details of the initialization procedure. -
Page 83: Error Indication
ERROR INDICATION 22 December 1998 6.3 ERROR INDICATION If the self-diagnostics find an error, the error is displayed by a combination of the four LEDs on the scanner. If the dip switches on the rear of the machine are set up for normal operation, the error is indicated roughly for users. -
Page 84: Troubleshooting Procedures
22 December 1998 TROUBLESHOOTING PROCEDURES 6.4 TROUBLESHOOTING PROCEDURES There are two types of troubleshooting procedure. • For user-visible error conditions that the user could not clear up • For technician level error conditions 6.4.1 USER-VISIBLE ERROR CONDITIONS ADF Interlock Switch Open Symptom: The problem cannot be solved with the procedures in the user’s manual. - Page 85 TROUBLESHOOTING PROCEDURES 22 December 1998 Document Jam Symptom: The problem cannot be solved with the procedures in the user’s manual. Possible Causes: • Damaged separation unit • Damaged paper transport drum assy • Damaged paper feed-out unit • Defective paper transport motor or paper feed motor •...
- Page 86 22 December 1998 TROUBLESHOOTING PROCEDURES Paper Misfeed Symptom: The problem cannot be solved with the procedures in the user's manual. Possible Causes: • Damaged separation unit • Defective pick-up clutch • Defective ADU • Defective SCU • Defective feed sensor Procedure: Does the pick-up roller mechanism work? Is 24 volts supplied to the pick-up clutch?
- Page 87 TROUBLESHOOTING PROCEDURES 22 December 1998 Document Table Error Symptom: The problem cannot be solved with the procedures in the user's manual. Possible Causes: • Defective document table position sensor • Defective document table clutch • Defective paper feed motor • Defective ADU •...
- Page 88 22 December 1998 TROUBLESHOOTING PROCEDURES Endorser Error Symptom: The problem cannot be solved with the procedures in the user's manual. Possible Causes: • Defective endorser unit • Defective EDU Procedure: Is the endorser unit is broken? Is the cable between the EDU and the endorser unit or the ADU and the EDU OK? Replace the cable.
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Page 89: Service Call Errors (System Errors)
TROUBLESHOOTING PROCEDURES 22 December 1998 6.4.2 SERVICE CALL ERRORS (SYSTEM ERRORS) If a system error occurs, the following errors can be detected with the self- diagnostics using the dip switches. See Service Level Functions – Dip Switch Settings. Memory Error Symptom: This error occurs in the following conditions. - Page 90 22 December 1998 TROUBLESHOOTING PROCEDURES Lamp Error Symptom: The white level cannot be adjusted. Possible Cause: • A mirror is out of position. • Misalignment • Defective SBU • Defective IOB • Defective SCU Procedure: Does the exposure lamp light during scanning? Does 24 volts come to the lamp stabilizer? Is the cable damaged? Replace the PSU.
- Page 91 TROUBLESHOOTING PROCEDURES 22 December 1998 CIS Error (duplex model only) Symptom: The white level of the reverse side scanning cannot be adjusted. Possible Cause: • Defective CIS unit • Defective ADU • Defective RCU • Defective SCU Procedure: Does the LED array light? Does 15 volts come to the CIS unit? Is the cable damaged? Replace the ADU.
- Page 92 22 December 1998 TROUBLESHOOTING PROCEDURES Shading Error Symptoms: A shading error occurs when one of the following conditions occurs. • The difference in black level cannot be adjusted. • The black level cannot be adjusted. • The white level cannot be adjusted. Possible Causes: •...
- Page 93 TROUBLESHOOTING PROCEDURES 22 December 1998 Home Position Error Symptom: This error is detected when the home position sensor cannot detect the first scanner. Possible Causes: • Defective scanner motor • Damaged cable between the scanner motor and the IOB • Defective IOB •...
- Page 94 22 December 1998 TROUBLESHOOTING PROCEDURES SCU Error Symptom: 3.3 volts generated on the SCU failed during scanning. Possible Cause: • Defective SCU Procedure: Replace the SCU. RCU Error Symptom: 3.3 volts generated on the RCU failed during scanning. Possible Cause: •...
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Page 95: Indication When A Connector Is Out Of Position
INDICATION WHEN A CONNECTOR IS OUT OF POSITION 22 December 1998 6.5 INDICATION WHEN A CONNECTOR IS OUT OF POSITION 6.5.1 SCANNER S C U G411T500.WMF Scanner LEDs Connector Remarks Green Green Green 1 (CN201) — — — — 2 (CN203) 3 (CN204) Blinking Blinking... -
Page 96: Adf
22 December 1998 INDICATION WHEN A CONNECTOR IS OUT OF POSITION 6.5.2 ADF Document Sensor Pick-up Clutch Document Table Lift Document Table Position Clutch Sensor Feed-out Sensor A D U G411T501.WMF Scanner LEDs Connector Remarks Green Green Green 1 (CN303) 2 (CN302) Blinking Blinking... -
Page 97: Blown Fuse Coditions
BLOWN FUSE CODITIONS 22 December 1998 6.6 BLOWN FUSE CODITIONS Rating Symptom when turning on the main switch Fuse 115 V 220 ~ 240 V Power Supply Unit 5 A/125 V 3.15 A/250 V No response. Exposure lamp error FU31 4 A/125 V Home position error White level error... -
Page 98: Ipu (Image Processing Unit)
22 December 1998 IPU (IMAGE PROCESSING UNIT) 7. OPTION 7.1 IPU (IMAGE PROCESSING UNIT) 7.1.1 OVERVIEW The IPU does the following. Dynamic Threshold This function automatically determines a suitable threshold value based on the original, and converts the scanned image to binary data. Auto Photo/Letter This function automatically identifies the text portions of an original and the photographic portions, and scans each in a suitable scan mode. -
Page 99: Image Processing Path
IMAGE PROCESSING PATH 22 December 1998 7.2 IMAGE PROCESSING PATH The following image processing is for the scanner with the optional IPU. S C U Optional IPU S C U Size Magnification/ Optional Section White/Black M e m o r y I P U Detection Mirror Process... - Page 100 HS2P (G407/G408/G410/G411) Point to Point Diagram CN309 CN305 15VLED Feed-out Sensor 15VLED [ 5] Feed-out Sensor –12V FU101 Document Table Position [ 5] Document Table Position Sensor Sensor [ 5] Document Sensor Document Sensor CN310 CN306 Relay [ 5] Relay Sensor Sensor Feed Sensor [ 5] Feed Sensor...