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C9404 (bizhub C364/C284/C224)
Please search Knowledge Base articles and Bulletins as they may contain relevant information and updated Part information such as Part numbers.
Contents
| Trouble type | CIS LED lighting abnormally | |
| Trouble code | C9404 | |
| Rank | A | |
| Detection timing | <When DF-701 is installed> 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) |
(2)Procedure
| Step | Action | Control signal | Location of electrical components |
| 1 | Correct the harness connection between CIS and DSIPB if faulty. | – | – |
| 2 | Correct the harness connection between CIS and CISPU if faulty. | – | – |
| 3 | Replace CIS (Part# A3CEM70000) | – | – |
| 4 | CISPU F1, F2 conduction check | – | – |
| 5 | Replace CISPU (Part# A3CEPP4Y00) | – | – |
| 6 | Replace DSIPB (Part# A161H02A00) | – | – |
| 7 | Replace MFPB (C364/C284 Part# A161H02104 / C224 Part# A4FMH02208) | – | – |
- Link to the layout drawings for related parts by each trouble code (S.83. C6754, C6755, C9403, C9404)
K3.13.2 (Link to the Field Service Manual)