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C9404 (bizhub 558/458/368/308)
Contents
| Trouble type | C9404: CIS LED lighting abnormally (bizhub 368/308: When DF-704 is installed, bizhub 558/458) |
| Rank | B |
| Trouble detection condition | After a scan job is completed, the machine detected that the average output of the CIS LED is greater than the specified value. |
| Trouble isolation | Scanner |
| Relevant electrical parts | • CIS module (CIS) • CIS power supply (CISPU) • Dual scan image processing board (DSIPB) • MFP board (MFPB) • CIS cable |
Procedure
- Check the back side scanning shading shaft for any stain, and clean up it as necessary.
- Check that the bearing of the back side glass cleaning roller unit is on the standby position.
- Correct the harness connection between CIS and DSIPB if faulty.
- Correct the harness connection between CIS J222-CISPU J2 if faulty.
- Measure the voltage of CISPU J1-1.
- Control signal: CISPU J1-1 (DC12V)
- Location of electrical component: DF-704 5-B
- Measure the voltage of CIS J222-1, J222-2 and J222-5.
- Control signal: CIS J222-1 (DC5V), CIS J222-2 (DC5V), CIS J222-5 (DC12V)
- Location of electrical component: DF-704 4-B
- For any abnormality in the measurement result, replace the CIS cable. (Part# A85GM70001)
- Replace CIS. (Part# A85GM70001)
- Replace CISPU. (Part# A3CEPP4Y00)
- Replace DSIPB. (bizhub 368/308 Part# A7PUH02A01/ bizhub 558/458 Part# A9HGH02A00)
- Replace MFPB. (bizhub 368/308 / bizhub 558/458) (558 Part# A9HGH02102 / 458 Part# A9HHH02102 / 368/308 Part# A9HJH02102)
NOTICE
- Link to the wiring diagram (DF-704)
Please search Knowledge Base articles and Bulletins as they may contain relevant information and updated Part information such as Part numbers.
K.3.22.2 (Link to the Field Service Manual)