C3305 (bizhub C754e/C654e)

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Contents

Trouble typeSwitchback paper cooling fan’s failure to turn
Trouble codeC3305
RankB
Detection timingThe fan lock signal remains HIGH for a predetermined continuous period of time while the fan is turning.
Trouble isolation
Relevant electrical parts• Switchback paper cooling fan (FM4)
• Paper feed/transport drive board (PFTDB)

 (2)Procedure

StepActionControl signalLocation of electrical components
1Check the connector between FM4-relay CN282-relay CN280-relay CN279-PFTDB CN10 for proper connection and correct as necessary.
2Check the fan for possible overload and correct as necessary.
3FM4 operation checkPFTDB CN10-11 (LOCK)6-P
4Replace FM4 (Part# 9J06M10000)
5PFTDB ICP9 conduction check
6Replace PFTDB (Part# A2X0H00202)

Please search Knowledge Base articles and Bulletins as they may contain relevant information and updated Part information such as Part numbers.

K.3.8.5 (Link to the Field Service Manual)