C9401 (bizhub C554/C454)
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Contents
| Trouble type | Exposure LED lighting failure |
| Trouble code | C9401 |
| Rank | A |
| Detection timing | The output from the CCD sensor is a predetermined value or less during CCD sensor gain adjustment. |
| Trouble isolation | Scanner |
| Relevant electrical parts | -LED exposure unit (LU201) -Flat cable (LED exposure unit) -CCD board (CCDB) -Scanner drive board (SCDB) -Printer control board (PRCB) -MFP board (MFPB) |
(2)Procedure
| Step | Action | Control signal | Location of electrical components |
| 1 | Check the connection between SCDB PJ3-LU201, and correct if necessary. | – | – |
| 2 | Check the connector between SCDB PJ1-PRCB CN43 for proper connection and correct as necessary. | – | – |
| 3 | Check the connector between CCDB PJ3-MFPB PJ01 for proper connection and correct as necessary. | – | – |
| 4 | Replace the LED exposure unit (Part# A161M31100Old or part# A61FM31100) | – | – |
| 5 | Replace CCDB (Part# A161R72100) | – | – |
| 6 | SCDB F1 conduction check | – | – |
| 7 | Replace SCDB (Part# A161H01A00Old or A161H01B12) | – | – |
| 8 | Replace PRCB (C554 Part# A2XKH00104 / C454 A4FJH00104) | – | – |
| 9 | Replace MFPB (Part# A2XKH02004) | – | – |
- Link to the layout drawings for related parts by each trouble code (S.120. C9401, C9402)
K3.13.1 (Link to the Field Service Manual)