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Important Notices Explanation of Symbols The following symbols are used throughout this Service Manual. Symbols Explanation Symbols Explanation Check. Remove the claw. Check visually. Insert the claw. Check a sound. Push the part. Disconnect the connector. Connect the power cable. Connect the connector.
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Important Notices 2. In the digital circuits, '1' is used to indicate that the voltage level of a given signal is "High", while '0' is used to indicate "Low". (The voltage value, however, differs from circuit to circuit.) In addition, the asterisk (*) as in "DRMD*" indicates that the DRMD signal goes on when '0'.
Contents Contents Safety Precautions....................1 Points to Note Before Servicing......................2 Points to Note at Cleaning........................2 Notes on Assembly/Disassembly......................2 Points to Note when Tightening a Screw....................2 Handling of packaging materials......................3 1. Product Overview.....................4 Specifications............................5 Specifications............................5 Name of Parts............................. 6 External View............................6 Cross Section............................
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Contents Motor..............................22 Removing the Buffer Pass Motor (M401)....................22 PCB..............................23 Removing the Buffer Pass Controller PCB (PCB401)................23 5. Adjustment..................... 24 Basic Adjustment..........................25 Basic Adjustments..........................25 APPENDICES......................26 Service Tools.............................27 Solvents and Oils..........................27 Special Tools............................27 General Circuit Diagram........................28 General Circuit Diagram........................28...
Safety Precautions Points to Note Before Servicing.... 2 Points to Note at Cleaning....2 Notes on Assembly/Disassembly..2 Handling of packaging materials... 3...
Safety Precautions Points to Note Before Servicing • At servicing, be sure to turn OFF the power source according to the specified steps and disconnect the power plug. • At the time of assembly and disassembly, be sure to place a sheet of paper under the parts to prevent them from being soiled or foreign matter from entering the parts.
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1. Product Overview Specifications Specifications Item Description Remarks Paper Receipt Center Standard Installation Method Built-in type Paper Type Thin Paper, Plain Paper, Recycled Paper, Eco Paper, Heavy Paper, Different depending on the host ma- (Buffer Pass Delivery Special Paper, Postcard, Transparency, Labels chine.
Technical Explanation Basic Configuration....... 9 Controls..........10 Basic Operation........11 Jam Detection........12 Fan Operation........13 Power Supply........14 Upgrading..........15...
2. Technical Explanation Basic Configuration Basic Constitution The Buffer Pass Unit consists of the following major components: Name Remarks Error Code [1] OPEN Detection Sensor PS403 [2] Buffer Pass Inlet Cooling Fan FM401 E551-8021, E551-8022 [3] Buffer Pass Exit Cooling Fan FM402 E551-8023, E551-8024 [4] Buffer Pass Inlet Sensor...
2. Technical Explanation Basic Operation Basic Operation The device feeds paper that is fed from the Staple Finisher / Booklet Finisher. Drive Configuration The following is a diagram showing the drive system of the Buffer Pass Unit. PS402 PS401 M401 Notation Name M401...
2. Technical Explanation Jam Detection Overview The following diagram shows the arrangement of sensors used to detect jams in the Buffer Pass Unit. PS403 PS402 PS401 Jam Types Jam Code Jam type Sensor Sensor Name 100A Delay PS401 Inlet Sensor 100B Delay PS402...
2. Technical Explanation Fan Operation The 2 fans are equipped in the Buffer Pass Unit which control temperature's rising to prevent image defect when the toner's temperature rises in the host machine. FM401 FM402 Notation Name Error Code FM401 Buffer Pass Inlet Cooling Fan E551-8021 E551-8022 FM402...
2. Technical Explanation Power Supply Power Supply Route 24V and 5V power are supplied to the Buffer Pass Controller PCB through the Finisher Controller PCB. Buffer Pass Controller PCB Finisher Controller PCB Host Machine (FU1) Motor Driver Motor (M401) Fuse (FU3) Fan (...
2. Technical Explanation Upgrading Upgrading When upgrading the firmware of the Buffer Pass Controller PCB, upgrade from the host machine. (Refer to the service manual for the host machine as to the detail.)
3. Periodical Service Periodical Service Operation Item Periodically Replaced Parts There are no parts that need to be periodically replaced on the buffer pass unit. Consumable Parts There is no consumable parts on the buffer pass unit.
Parts Replacement and Cleaning Removing this Machine from the Host Machine........... 19 List of Parts......... 21 Motor........... 22 PCB.............23...
4. Parts Replacement and Cleaning Removing this Machine from the Host Machine Detaching from the Host Machine CAUTION: Check that the main power switch is OFF and the power plug is disconnected from the outlet.
4. Parts Replacement and Cleaning List of Parts Sensors, Motor, PCB PS403 M401 PCB401 PS402 PS401 Name Main Unit Refer to PS401 Buffer Pass Inlet Sensor Product Configuration PS402 Buffer Pass Exit Sensor Product Configuration PS403 OPEN Detection Sensor Product Configuration M401 Buffer Pass Feed Motor Product Configuration...
4. Parts Replacement and Cleaning Motor Removing the Buffer Pass Motor (M401) ■ Procedure Loosen the tensioner screw [1] and remove the belt [2]. Remove the Buffer Pass Feed Motor [1]. • 2 Screws [2] • 1 Connector [3]...
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