03/02
Level 2 Troubleshooting
WorkCentre Pro 423/428
2-133
CHAPTER 2 TROUBLESHOOTING
MF +12VDC POWER FIP (BSD 19.1)
Is the v12 VDC between the MF MAIN PWB J300-5(+)
and GND(-)?
Y
N
Is the v12 VDC between the MF LVPS J507-5(+)
and GND(-)?
Y
N
Is +12 VDC WIRE normal (no short circuit with the
FRAME)?
Y
N
Repair the short circuit.
Is the voltage 100 VAC between the MF LVPS
J3A-4(+) and J3A-3(-)?
Y
N
Is the voltage 100 VAC between the MF relay
connector J14-1(+) and J4-2(-)?
Y
N
Is the voltage 100 VAC between the
POWER UNIT J1-1(+) and J1-4(-)?
Y
N
Replace the POWER UNIT. (PL7.1)
Check between the POWER UNIT and
MF relay connector for an open wire or
poor contact.
Check between the MF relay connector and MF
LVPS for an open wire or poor contact.
Replace the MF LVPS. (PL7.4)
Check between the MF LVPS and MF MAIN PWB for an
open wire or poor contact.
Check between the MF MAIN PWB and the corresponding part
for an open wire or poor contact.
MF +5VDC POWER FIP (BSD 19.1)
Is the v5 VDC between the MF MAIN PWB J300-1(+)
and GND(-)?
Y
N
Is the v5 VDC between the MF LVPS J507-1(+)
and GND(-)?
Y
N
Is +5 VDC WIRE normal (no short circuit with the
FRAME)?
Y
N
Repair the short circuit.
Is the voltage 100 VAC between the MF LVPS
J3A-4(+) and J3A-3(-)?
Y
N
Is the voltage 100 VAC between the MF relay
connector J14-1(+) and J4-2(-)?
Y
N
Is the voltage 100 VAC between the
POWER UNIT J1-1(+) and J1-4(-)?
Y
N
Replace the POWER UNIT. (PL7.1)
Check between the POWER UNIT and MF
relay connector for an open wire or poor
contact.
Check between the MF relay connector and MF
LVPS for an open wire or poor contact.
Replace the MF LVPS. (PL7.4)
Check between the MF LVPS and MF MAIN PWB for an
open wire or poor contact.
Check between the MF MAIN PWB and the corresponding part
for an open wire or poor contact.
MF -12VDC POWER FIP (BSD 19.1)
Is the voltage -12 VDC between the MF MAIN PWB J300-6(+)
and GND(-)?
Y
N
Is the voltage -12 VDC between the MF LVPS J507-6(+)
and GND(-)?
Y
N
Is -12 VDC WIRE normal (no short circuit with the
FRAME)?
Y
N
Repair the short circuit.
Is the voltage 100 VAC between the MF LVPS
J3A-4(+) and J3A-3(-)?
Y
N
Is the voltage 100 VAC between the MF relay
connector J14-1(+) and J4-2(-)?
Y
N
Is the voltage 100 VAC between the
POWER UNIT J1-1(+) and J1-4(-)?
Y
N
Replace the POWER UNIT. (PL7.1)
Check between the POWER UNIT and
MF relay connector for an open wire or
poor contact.
Check between the MF relay connector and
MF LVPS for an open wire or poor contact.
Replace the MF LVPS. (PL7.4)
Check between the MF LVPS and MF MAIN PWB for
an open wire or poor contact.
Check between the MF MAIN PWB and the corresponding part
for an open wire or poor contact.
Содержание WorkCentre Pro 423
Страница 1: ...Transmittal Page 3URGXFW RUN HQWUH 3UR 7LWOH 6HUYLFH 0DQXDO 3DUW 1XPEHU 3 6WDWXV QWLDO VVXH DWH 0DUFK...
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Страница 3: ...WorkCentre Pro 423 428 6HUYLFH 0DQXDO...
Страница 6: ......
Страница 8: ......
Страница 9: ...INTRODUCTION...
Страница 10: ......
Страница 24: ...WorkCentre 423 428 03 02 INTRODUCTION 14 7 Translation of Warnings...
Страница 25: ...CHAPTER 1 SERVICE CALL PROCEDURE...
Страница 26: ......
Страница 28: ...WorkCentre Pro 423 428 1 2 CHAPTER 1 SERVICE CALL PROCEDURE 03 02 1 1 Trimming...
Страница 31: ...CHAPTER 2 TROUBLESHOOTING...
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Страница 76: ...WorkCentre Pro 423 428 2 44 CHAPTER 2 TROUBLESHOOTING 03 02 2 3 Level 2 Troubleshooting...
Страница 242: ...WorkCentre Pro 423 428 2 210 CHAPTER 2 TROUBLESHOOTING 03 02 How to use the Diagnostic C E Mode...
Страница 243: ...CHAPTER 3 IMAGE QUALITY TROUBLESHOOTING...
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Страница 273: ...CHAPTER 4 DISASSEMBLY ASSEMBLY AND ADJUSTMENT...
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Страница 329: ...CHAPTER 5 PARTS LIST...
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Страница 415: ...03 02 5 2 Parts List WorkCentre Pro 423 428 5 85 CHAPTER 5 PARTS LIST...
Страница 416: ...CHAPTER 6 GENERAL...
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Страница 456: ...CHAPTER 7 ELECTRICAL WIRING DIAGRAMS...
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Страница 476: ...CHAPTER 8 ACCESSORIES...
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Страница 535: ...WorkCentre Pro 423 428 8 58 CHAPTER 8 ACCESSORIES 03 02 8 22 Stamp Kit Red...
Страница 536: ...CHAPTER 9 BSD Block Schematic Diagram...
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