WorkCentre Pro 423/428
2-110
CHAPTER 2 TROUBLESHOOTING
03/02
Level 2 Troubleshooting
2.3.4 IIT/IOT Status Code FIP
U1-1 MAIN MOTOR Failure (BSD 4.1)
Close the R/H Cover and FRONT Cover. Enter Diag mode and
Execute Chain4 Func1. Does the MAIN MOTOR rotate?
Y
N
Is the voltage between MAIN MOTOR J205-1(+) and
GND(-) +24VDC?
Y
N
Is the voltage between MCU/SW PWB J460-8(+) and
GND(-) +24VDC?
Y
N
Is the voltage between MCU/SW PWB J458-4(+)
and GND(-) +24VDC?
Y
N
Is the voltage between MCU/SW PWB
J458-3(+) and GND(-) +24VDC?
Y
N
Is the voltage between MCU/SW
PWB J458-5(+) & GND(-) +24VDC?
Y
N
Is the voltage between MCU/SW
PWB J458-6(+) and GND(-)
+24VDC?
Y
N
Replace the MCU/SW
PWB. (PL7.2)
Check between MCU/SW PWB
and R/H INTERLOCK SW for an
open or poor contact. If there is
no problem, replace the R/H
INTERLOCK SW. (PL2.3)
Replace the MCU/SW PWB.(PL7.2)
Check between MCU/SW PWB and
FRONT INTERLOCK SW for an open /poor
contact. If there is no problem, replace
FRONT INTERLOCK SW. (PL2.3)
Replace the MCU/SW PWB. (PL7.2)
Check between MCU/SW PWB and MAIN MOTOR
for an open wire or poor contact.
A
B
A
B
Is the voltage between MAIN MOTOR J205-6(+) and
GND(-) +5VDC?
Y
N
Is the voltage between MCU/SW PWB J460-3(+) and
GND(-) +5VDC?
Y
N
Replace the MCU/SW PWB. (PL7.2)
Check between MCU/SW PWB and MAIN MOTOR
for an open wire or poor contact.
Execute Chain4 Func1. Is the voltage between MAIN
MOTOR J205-8(+) and GND(-) +2.5VDC?
Y
N
Execute Chain4 Func1. Is the voltage MCU/SW PWB
J460-1(+) and GND(-) +2.5VDC?
Y
N
Replace the MCU/SW PWB. (PL7.2)
Check between MCU/SW PWB and MAIN MOTOR
for an open wire or poor contact.
Replace the MAIN MOTOR. (PL1.1)
Execute Chain4 Func1. Is the voltage between MAIN MOTOR
J205-7(+) and GND(-) +2.5VDC?
Y
N
Check between MCU/SW PWB and MAIN MOTOR for an
open wire or poor contact. They are good.
Y
N
Repair an open wire or poor contact
Replace the MAIN MOTOR. (PL1.1)
Execute Chain4 Func1. Is the voltage between MCU/SW
PWBJ460-2(+) and GND(-) +2.5VDC?
Y
N
Check between MCU/SW PWB and MAIN MOTOR for an
open wire or poor contact.
Replace the MCU/SW PWB. (PL7.2)
U1-2 Fuser Fan failure (BSD 10.1)
Enter Diag mode and execute Chain 4 - Func 2.
Does the FUSER FAN rotate at high speed?
Y
N
Execute Chain4 Func2.
Is the voltage between POWER UNIT J204-1(+) and
GND(-) +24VDC?
Y
N
Execute Chain4 Func2. POWER UNIT
Is the voltage between J524-1(+) and GND(-) 0VDC?
Y
N
Check between POWER UNIT J524-1 and
MCU/SW PWB J403-8 for an open wire or
poor contact. If they are good, replace
the MCU /SW PWB. (PL7.2)
Replace the POWER UNIT. (PL7.1)
Check between FUSER FAN and POWER UNIT for an
open wire or poor contact.
If they are good, replace FUSER FAN. (PL5.2)
Execute Chain4 Func2. Is the voltage between POWER UNIT
J204-2(+) and GND(-) +3.3VDC?
Y
N
Execute Chain4 Func2. Is the voltage between
POWER UNIT J524-4(+) and GND(-) +3.3VDC?
Y
N
Execute Chain4 Func2. Is the voltage between
MCU/SW PWB J403-6(+) and GND(-) +3.3VDC?
Y
N
Replace the MCU/SW PWB. (PL7.2)
Check between the MCU/SW PWB and POWER
UNIT for an open wire or poor contact.
Replace the POWER UNIT. (PL7.1)
Replace the FUSER FAN. (PL5.2)
Summary of Contents for WorkCentre Pro 423
Page 2: ......
Page 3: ...WorkCentre Pro 423 428 6HUYLFH 0DQXDO...
Page 6: ......
Page 8: ......
Page 9: ...INTRODUCTION...
Page 10: ......
Page 24: ...WorkCentre 423 428 03 02 INTRODUCTION 14 7 Translation of Warnings...
Page 25: ...CHAPTER 1 SERVICE CALL PROCEDURE...
Page 26: ......
Page 28: ...WorkCentre Pro 423 428 1 2 CHAPTER 1 SERVICE CALL PROCEDURE 03 02 1 1 Trimming...
Page 31: ...CHAPTER 2 TROUBLESHOOTING...
Page 32: ......
Page 76: ...WorkCentre Pro 423 428 2 44 CHAPTER 2 TROUBLESHOOTING 03 02 2 3 Level 2 Troubleshooting...
Page 243: ...CHAPTER 3 IMAGE QUALITY TROUBLESHOOTING...
Page 244: ......
Page 273: ...CHAPTER 4 DISASSEMBLY ASSEMBLY AND ADJUSTMENT...
Page 274: ......
Page 329: ...CHAPTER 5 PARTS LIST...
Page 330: ......
Page 415: ...03 02 5 2 Parts List WorkCentre Pro 423 428 5 85 CHAPTER 5 PARTS LIST...
Page 416: ...CHAPTER 6 GENERAL...
Page 417: ......
Page 456: ...CHAPTER 7 ELECTRICAL WIRING DIAGRAMS...
Page 457: ......
Page 476: ...CHAPTER 8 ACCESSORIES...
Page 477: ......
Page 535: ...WorkCentre Pro 423 428 8 58 CHAPTER 8 ACCESSORIES 03 02 8 22 Stamp Kit Red...
Page 536: ...CHAPTER 9 BSD Block Schematic Diagram...
Page 537: ......
Page 541: ......
Page 542: ......
Page 543: ......
Page 544: ......
Page 545: ......
Page 546: ......
Page 547: ......
Page 548: ......
Page 549: ......
Page 550: ......
Page 551: ......
Page 552: ......
Page 553: ......
Page 554: ......
Page 555: ......
Page 556: ......
Page 557: ......
Page 558: ......
Page 559: ......
Page 560: ......
Page 561: ......
Page 562: ......
Page 563: ......
Page 564: ......
Page 565: ......
Page 566: ......
Page 567: ......
Page 568: ......
Page 569: ......
Page 570: ......
Page 571: ......
Page 572: ......
Page 573: ......
Page 574: ......
Page 575: ......
Page 576: ......
Page 577: ......
Page 578: ......
Page 579: ......
Page 580: ......
Page 581: ......
Page 582: ......
Page 583: ......
Page 584: ......
Page 585: ......
Page 586: ......
Page 587: ......
Page 588: ......
Page 589: ......
Page 590: ......
Page 591: ......
Page 592: ......
Page 593: ......
Page 594: ......
Page 595: ......
Page 596: ......
Page 597: ......
Page 598: ......
Page 599: ......
Page 600: ......
Page 601: ......
Page 602: ......
Page 603: ......
Page 604: ......
Page 605: ......
Page 606: ......
Page 607: ......
Page 608: ......
Page 609: ......
Page 610: ......
Page 611: ......
Page 612: ......
Page 613: ......
Page 614: ......
Page 615: ......
Page 616: ......
Page 617: ......
Page 618: ......
Page 619: ......