C4301 (bizhub C754/C654)
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Contents
| Trouble type | PH cooling fan’s failure to turn |
| Trouble code | C4301 |
| Rank | B |
| Detection timing | The fan lock signal remains HIGH for a predetermined continuous period of time while the fan is turning. |
| Trouble isolation | – |
| Relevant electrical parts | -PH cooling fan (FM14) -PH relay board (PHRYB) -Printer control board (PRCB) |
 (2)Procedure
| Step | Action | Control signal | Location of electrical components |
| 1 | Check the connector between FM14-relay CN202-PHRYB CN12 for proper connection and correct as necessary. | – | – |
| 2 | Check the fan for possible overload and correct as necessary. | – | – |
| 3 | FM14 operation check | PHRYB CN12-4 (DRIVE)PHRYB CN12-5 (LOCK) | 9-B |
| 4 | Replace FM14 (Part# 9J03M10000) | – | – |
| 5 | PHRYB ICP6 conduction check | – | – |
| 6 | Replace PHRYB (Part# A2X0H00300) | – | – |
| 7 | Replace PRCB (Part# A2X0H00102) | – | – |
- Link to the wiring diagram (N.1. bizhub C754/C654)
- Link to the layout drawings for related parts by each trouble code (S.79. C4301)
K.3.9.3 (Link to the Field Service Manual)