C3305 (bizhub 958/808)

Contents

Trouble type	C3305: Switchback paper cooling fan/1’s failure to turn
Rank	B
Trouble detection condition	The 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/1 (FM4) • Paper feed/transport drive board (PFTDB)

 Procedure

1. Check the connector between FM4-relay CN283-relay CN280-relay CN279-relay CN271B-PFTDB CN2 for proper connection and correct as necessary.
2. Check the fan for possible overload and correct as necessary.
3. FM4 operation check
   • Control signal: PFTDB CN2-15 (LOCK)
   • Location of electrical component: 5-P
4. Replace FM4. ( 9J06M10000 )
5. PFTDB F14 conduction check
6. Replace PFTDB. ( A796H00200 )

NOTICE

• Link to the wiring diagram (bizhub 958/808/758, bizhub PRO 958)

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

(Link to the Field Service Manual) K.3.9.6.