How Can We Help?
C7304 (bizhub 750i)
Please search Knowledge Base articles and Bulletins as they may contain relevant information and updated Part information such as Part numbers.
Contents
Trouble type | C7304: Toner cartridge cooling fan failure |
Rank | C |
Trouble detection condition | After starting the fan, an error is detected for the malfunction detection signal. |
Trouble isolation | – |
Relevant electrical parts | -Toner cartridge cooling fan (FM4) -Expansion control board (EXCB) |
Procedure
- Check the connector between FM4-relay CN78-EXCB CN14EX for proper connection and correct as necessary.
- Check the connector of FM4 for proper drive coupling and correct as necessary.
- FM4 conduction check.
- Control signal: EXCB CN14EX-4 (REM), EXCB CN14EX-6 (LOCK)
- Location of electrical component: 17-P
- Replace FM4. (Part# A93EM10000)
- Replace EXCB. (Part# AC74H00501)