Konica Minolta bizhub C658 Service Manual page 1492

bizhub C658/C558/C458/C368/C308/C258
• Location of electrical component: 26-T
4. Replace FM7.
5. Replace EXCB.
6. MFPB F6E conduction check
7. Replace MFPB.
NOTICE
• Link to the wiring diagram (
3.17.4 C5351 (bizhub C658/C558/C458)
(1) Contents
Trouble type
Rank
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
(2) Procedure
1. Check the connector between FM1-relay CN26-MFPB CN31E for proper connection and correct as necessary.
2. Check the fan for possible overload and correct as necessary.
3. FM1 operation check
• Control signal: MFPB CN31E<A>-9 (REM), MFPB CN31E<A>-11 (LOCK)
• Location of electrical component: 23-J
4. Replace FM1.
5. Replace MFPB.
NOTICE
• Link to the wiring diagram (
3.17.5 C5355 (bizhub C658/C558/C458)
(1) Contents
Trouble type
Rank
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
(2) Procedure
(a) bizhub C658/C558
1. Check the connector between FM4-relay CN78-EXCB CN10 for proper connection and correct as necessary.
2. Check the fan for possible overload and correct as necessary.
3. FM4 operation check
• Control signal: EXCB CN10-1 (REM), EXCB CN10-3 (LOCK)
• Location of electrical component: 27-T
4. Replace FM4.
5. Replace EXCB.
6. MFPB F6E or F8E conduction check
7. Replace MFPB.
NOTICE
• Link to the wiring diagram (
(b) bizhub C458
1. Check the connector between FM4-relay CN111-MFPB CN16E for proper connection and correct as necessary.
2. Check the fan for possible overload and correct as necessary.
3. FM4 operation check
• Control signal: MFPB CN16E-2 (REM), MFPB CN16E-3 (LOCK)
• Location of electrical component: 26-C
4. Replace FM4.
5. Replace MFPB.
NOTICE
• Link to the wiring diagram (
3.17.6 C5358 (bizhub C658/C558/C458)
(1) Contents
Trouble type
Rank
Trouble detection condition The fan lock signal remains HIGH for a predetermined continuous period of time while the fan is turning.
Trouble isolation
N.2 bizhub C658/C558/C458)
C5351: Power supply cooling fan's failure to turn
B
-
• Power supply cooling fan (FM1)
• MFP board (MFPB)
N.2 bizhub C658/C558/C458)
C5355: Toner cartridge cooling fan's failure to turn
B
-
• Toner cartridge cooling fan (FM4)
• Expansion control board (EXCB)
• MFP board (MFPB)
N.2 bizhub C658/C558/C458)
N.2 bizhub C658/C558/C458)
C5358: Fusing power supply cooling fan's failure to turn (bizhub C458)
B
-
K TROUBLESHOOTING > 3. TROUBLE CODE
K-164