![background image](http://html1.mh-extra.com/html/ricoh/sh-p1-m020/sh-p1-m020_field-service-manual_1456694250.webp)
231
D
FGATE OFF error
• Defective GAVD and PCI bridge ASIC
The FGATE signal did not go off within
10 seconds after the machine finished
writing. (The BCU generates the
FGATE signal and sends it to the LD
unit when the registration sensor
switches on.)
• Turn the Power Switch Off and On.
• Replace the controller board.
240
C
LD error
• Defective LD unit
• Disconnect harness.
• Disconnect LD Driver.
The IPU detected a problem at the LD
unit.
• Connect the harness properly.
• Replace the LD unit.
312
D
Charge roller current leak
• Cartridge (charge roller) defective
• High voltage supply board defective
• Disconnect harness.
The PWM duty output exceeded 50%
for longer than 200 ms, indicating a
leak in the charge roller current.
• Turn the Power Switch Off and On.
• Connect the harness properly.
• Replace the AIO unit.
• Replace the High voltage power supply
board.
320
D
Development Bias leak
• Bias applying section leak
• High voltage supply board defective
• Disconnect harness
• Development Bias CN loose
The PWM duty output exceeded 50%
for longer than 200 ms, indicating a
leak in the charge roller current.
• Connect the harnesses properly.
• Replace the AIO.
• Replace High voltage power supply
board.
6. Troubleshooting
248
6
Summary of Contents for SH-P1 M020
Page 1: ...Model SH P1 Machine Code M020 M021 Field Service Manual 29 July 2011...
Page 2: ......
Page 6: ...4...
Page 16: ...Item Machine code Remarks SD Card for Fonts Type C 1 M352 For EU 1 Product Information 14 1...
Page 65: ...3 Operation panel A B x 1 hooks x 2 Covers 63 4...
Page 70: ...2 Laser synchronization detector A x 1 4 Replacement and Adjustment 68 4...
Page 78: ...3 Fusing cleaning roller A 4 Replacement and Adjustment 76 4...
Page 86: ...4 Registration sensor A x 1 4 Replacement and Adjustment 84 4...
Page 93: ...6 Remove 2 screws and release 2 hooks Duplex 91 4...
Page 97: ...6 Paper exit sensor A x 1 hooks x 3 Paper Exit 95 4...
Page 126: ...4 Plate spring A x 1 5 Toner end sensor B x 1 4 Replacement and Adjustment 124 4...
Page 132: ...4 Replacement and Adjustment 130 4...
Page 245: ...17 Remove the SD card after main power switch is turned off Card Save Function 243 5...
Page 246: ...5 System Maintenance Reference 244 5...
Page 288: ...7 Energy Saving 286 7...
Page 289: ...Model SH P1 Machine Code M020 M021 Appendices 29 July 2011...
Page 290: ......
Page 292: ...2...
Page 310: ...1 Appendices Specifications 20 1...