C5501 (bizhub C3320i)
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Contents
| Trouble type | C5501: AC signal abnormality | 
| Rank | C | 
| Trouble detection condition | The zero cross signal is not input. | 
| Trouble isolation | – | 
| Relevant electrical parts | -Fusing unit -DC power supply (DCPS) -CPU board (CPUB) -Base board (BASEB)  | 
Procedure
- Check the fusing unit for correct installation (whether it is secured in position).
 - Check the connector between DCPS CN6-BASEB CN1E for proper connection and correct as necessary.
 - Check the connector between the fusing unit-relay CN2-DCPS CN2 for proper connection and correct as necessary.
 - Check CPUB for proper installation and correct as necessary.
 - Replace the fusing unit. (Part# AAJRR70300)
 - Replace CPUB. (Part# AAJRH01005)
 - Replace BASEB. (Part# A93EH02007)
 - Replace DCPS. (Part# AAJRR70600)
 
L.3.10.5 (Link to the Field Service Manual)
