Konica-Minolta bizhub C3350
Troubleshooting. Other Trouble
Machine is not energized at all (DCPU operation check)
Relevant electrical parts
• Power switch (SW1)
• Printer control board (PRCB)
• DC power supply (DCPS)
Procedure
Step | Check item | Location | Result | Action |
---|---|---|---|---|
1 | Is a power voltage supplied across CN1 on DCPS? | 2-G | NO | Check the wiring from the wall outlet to inlet to SW1 to DCPS CN1. |
2 | Are DC5.1 V being output from CN11 ON MFPB? | 6-F | NO | • Check the wiring from the DCPS CN5 to MFPB CN11. • Replace DCPS. |
3 | Is DC24 V being output from CN1 on PRCB? | 5-G | NO | Check the wiring from the DCPS CN4 to PRCB CN1. |
4 | Is DC24 V being output from CN502 on MFPB? | 6-F | NO | Replace MFPB. |
5 | Check the wiring from the MFPB CN16C to PRCB CN4. | NO | • Reconnect. • Replace the flat cable. |
|
6 | Check the wiring from the PRCB CN1 to DCPS CN4. | YES | Reconnect. | |
NO | Replace PRCB. |
Operation panel indicators do not light
Relevant electrical parts
• MFP board (MFPB)
• Control panel
• DC power supply (DCPS)
Procedure
Step | Check item | Location | Result | Action |
---|---|---|---|---|
1 | Is a power voltage supplied across CN1 on DCPS? | 2-G | NO | Check the wiring from the wall outlet to inlet to SW1 to DCPS CN1. |
2 | Are the fuses on DCPS conducting? | NO | Replace DCPS. | |
3 | Is CN200 on MFPB properly connected? | 3-B | NO | Reconnect. |
4 | Is CN11, CN502 on MFPB properly connected? | 6-F | NO | Reconnect. |
YES | • Replace MFPB. • Replace the scanner unit. • Replace the operation panel. |
Fusing heaters do not operate
Relevant electrical parts
• Main power switch (SW1)
• Right door switch (SW3)
• Fusing unit
• DC power supply (DCPS)
• Printer control board (PRCB)
Procedure
Step | Check item | Location | Result | Action |
---|---|---|---|---|
1 | Is the power source voltage applied across CN1 on DCPS? | 2-G | NO | Check the wiring from the wall outlet to inlet to SW1 to DCPS CN1. |
2 | Is the power source voltage applied across CN2 on DCPS? | 2-H | YES | Replace fusing unit. |
NO | • Check the wiring from the DCPS CN3 to PRCB CN2. • Replace DCPS. • Replace PRCB. |
Operation panel (touch panel) do not respond
Relevant electrical parts
• Operation panel (OP)
• SSD board (SSDB)
Procedure
- To perform calibration of the operation panel.
- Replace SSDB.
- To perform calibration of the operation panel again.
- If the above actions do not solve the problem, replace the operation panel.
Output tray full indication does not disappear bizhub C3850FS
Relevant electrical parts
• Output tray paper holding motor (FSM6)
• Output tray full sensor (FSPS6)
• FS control board (FSCB)
Procedure
Step | Action | Control signal | Location |
---|---|---|---|
1 | Check the connector between FSM6-relay CN39-FRCB CN9 for proper connection and correct as necessary. | ||
2 | Check the connector of FSM6 for proper drive coupling, and correct as necessary. | ||
3 | Check the connector between FSPS6-relay CN39- FRCB CN9 for proper connection and correct as necessary. | ||
4 | FSPS6I/O check, sensor check | FSCB CN9-8 | 2-S |
5 | FSM6 operation check | FSCB CN9-12 to13 | 2-S |
6 | Replace FSM6 | ||
7 | FSCB PTC1 conduction check | ||
8 | Replace FSCB |