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2-24
Section 2 Troubleshooting
2.4 level 2 Troubleshooting
U8-1
EXPOSURE CONTROL FAIL
Ref. BSD: 3
Problem Area
: Initial Light Quantity Control(Optics)
Cause/Corrective Action
•
Defective Main PWB
•
Defective AC Drive PWB
•
Open harnesses or improper P/J connections of the circuits
controlling the above PWB’s.
U8-2
NO ZERO CROSS FAIL
Ref. BSD: 7
Preparation
: Ensure that P/J410 of Main PWB is securely
connected to P/J430 of AC Drive PWB.
WARNING:
Hazardous voltage. Use extreme care
.
Procedure
Power on. Detect the zero cross signal.
Is the level from P/J410-9 to COM +0.5VDC?
Y N
Is the voltage from P/J437-1 to P/J437-2 220VAC?
Y N
Check 220VAC input circuit.
Is the Front INTLK switch close?
Is the voltage from J431 to COM +24VDC?
Y N
Check the trouble chain E5.
Check the start signal of the INTLK Power Relay.
Is the level from P/J410-11 to com 0v?
Y N
Replace the Main PWB.
Check the wire from P/J430-4 of AC DRIVER to P/J410-11 of
Main PWB for an open circuit, short circuit or improper
connection. If no problem exists, replace the Main PWB
Replace the Main PWB.
U8-4 EXPOSURE VOLTAGE OVER FAIL
Ref. BSD: 3
Problem Area
: Light Quantity/Voltage Control(Optics)
Procedure
check the wire from P/J430-1 of AC DRIVER to P/J410-10 of Main
PWB.
Power on. Detect the Exposure Sensor Signal level.
Is the level from P/J410-10 to COM over 2.9VDC?
Y N
Replace Main PWB.
Replace AC DRIVER.
U8-5
EXPOSURE LIGHT QTY/VOLTAGE UNDER FAIL
Ref. BSD: 3
Problem Area
: Light Quantity/Voltage Control(Optics)
Preparation
: Ensure that P/J410-10 of Main PWB is securely
connected to P/J430-1 of AC Drive PWB.
Procedure
Enter Diag. Mode. Enter [6-7],[6-8].
Check the A/D value, A5-A7.
Is the voltage from P/J430-1 to COM
≤
0.5V?
Y N
Replace the Main PWB.
Replace the AC DRIVER.
Содержание 5915
Страница 1: ...XEROX 5915 SERVICE MANUAL Issued by Overseas Technical Group Xerox of Shanghai Limited 7th July 200 ...
Страница 4: ...Section 1 Service Procedure ...
Страница 6: ...1 2 Section 1 Service Procedure 1 1 Precautions Intentional bank page ...
Страница 9: ...Section 2 Troubleshooting ...
Страница 12: ...2 3 Section 2 Troubleshooting Intentional blank page ...
Страница 21: ...2 12 Section 2 Troubleshooting 2 3 Level1 Troubleshooting 2 3 Level 1 Troubleshooting 2 3 1 Level 1 F I P ...
Страница 35: ...Section 4 Disassembly Assembly Adjustment ...
Страница 37: ...4 2 Section 4 Disassembly Assembly Adjustment Intentional blank page ...
Страница 76: ...Section 5 Parts List ...
Страница 110: ...Section 6 GENERAL ...
Страница 123: ...Section 7 Wiring Data ...
Страница 124: ...7 1 Contents Section 7 Wiring Data Section 7 Wiring Data Plug Jack List 7 2 Connector Configuration 7 5 ...
Страница 128: ...7 5 Connector Configuration Section 7 WIRING DATA TOP VIEW Fig 1 TOP VIEW Fig 2 REAR VIEW Fig 3 MAIN MOTOR MAIN PWB ...
Страница 130: ...7 7 Connector Configuration Section 7 WIRING DATA R H VIEW A A DETAILS TOP VIEW Fig 6 Fig 7 ...
Страница 131: ...7 8 Section 7 Wiring Data Connector Configuration TOP VIEW Fig 8 BASE FRAME TOP VIEW Fig 9 ...
Страница 132: ...Section 9 BSD Block Schematic Diagram ...
Страница 135: ...9 3 1 1 STANDBY POWER Section 9 BSD Block Schematic Diagram ...
Страница 136: ...9 4 Section 9 BSD Block Schematic Diagram 1 1 STANDBY POWER ...
Страница 137: ...9 5 1 1 STANDBY POWER Section 9 BSD Block Schematic Diagram ...
Страница 138: ...9 6 Section 9 BSD Block Schematic Diagram 2 MODE SELECTION MACHINE RUN CONTROL START PRINT POWER ...
Страница 139: ...9 7 3 1 OPTICS Section 9 BSD Block Schematic Diagram ...
Страница 141: ...9 9 4 PAPER SUPPLYING AND TRANSPORTATION Section 9 BSD Block Schematic Diagram ...
Страница 143: ...9 11 5 XEROGRAPHICS COPY TRANSPORTATION AND FUSING Section 9 BSD Block Schematic Diagram ...