C9401 (bizhub C754/C654)
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Contents
| Trouble type | Exposure LED lighting failure / ROM contents error (MSC) |
| Trouble code | C9401 |
| Rank | A |
| Detection timing | -The output from the CCD sensor is a predetermined value or less during CCD sensor gain adjustment. -The wrong model of firmware is detected in the MFP board when the main power switch is turned ON. -The machine type information (Machine, Type) registered to the machine differs from the actual machine type. |
| Trouble isolation | Scanner |
| Relevant electrical parts | -LED exposure unit (LA201) -Flat cable (LED exposure unit) -CCD board (CCDB) -Scanner drive board (SCDB) -MFP board (MFPB) |
(2)Procedure
| Step | Action | Control signal | Location of electrical components |
| 1 | Check the machine type information registered and re-enter as necessary.For details the machine information, see J.2.4 Entering the machine type information. | ||
| 2 | Check the connection between SCDB and LA201, and correct if necessary. | – | – |
| 3 | Check the connection between SCDB and MFPB, and correct if necessary. | – | – |
| 4 | Check that the connection between CCDB and MFPB, and correct if necessary. | – | – |
| 5 | Replace the LED exposure unit (Part# A161M31001Old or Part# A2X0M31000) | – | – |
| 6 | Replace CCDB (A2X0R70022Old or A2X0R72100) | – | – |
| 7 | SCDB F1 conduction check | – | – |
| 8 | Replace SCDB (Part# A2X0H01A01Old or Part# A2X0H01A12) | – | – |
| 9 | Replace MFPB (Part# A2XKH02004) | – | – |
- Link to the layout drawings for related parts by each trouble code (S.108. C9401, C9402)
K.3.13.1 (Link to the Field Service Manual)