Konica-Minolta bizhub C650i
Troubleshooting. Machine is not energized at all, Fusing heaters do not operate
Machine is not energized at all (DCPU operation check)
Relevant electrical parts
• Main power switch (SW1)
• Base board (BASEB)
• DC power supply (DCPU)
Procedure
Step | Check item | Location | Result | Action |
---|---|---|---|---|
1 | Is a power voltage supplied across CN1-1, 2 on DCPU? | 7-T | NO | Check wiring from power outlet to DCPU CN1. |
2 | Are the fuses on DCPU conducting? | NO | Replace DCPU. | |
3 | Is DC5 V being output to CN5-1, 2, 3 on DCPU? | 9 to 10-T | NO | Replace DCPU. |
4 | Is DC24 V being output to CN6-3, 10 on DCPU? | 7 to 8-T | NO | • Check the WIRING from the wall BASEB to DCPU. • Replace DCPU. • Replace BASEB. |
5 | The LED on BASEB is blinking? | NO | Replace BASEB. | |
6 | Is DC24 V being output to CN6-1, 8 on DCPU? | 7 to 8-T | NO | Replace DCPU. |
Fusing heaters do not operate
Relevant electrical parts
• Main power switch (SW1)
• Right door switch (SW3)
• DC power supply (DCPU)
• Base board (BASEB)
• Fusing unit
Procedure
Step | Check item | Location | Result | Action |
---|---|---|---|---|
1 | Is a power voltage supplied across CN6-1, 8 on DCPU? During this time, the right door should be closed. |
7 to 8-T | NO | Check wiring from power outlet to DCPU to BASEB to SW3. |
2 | Is the power source voltage applied across BASEB CN4E-5, 13? | 7 to 8-F | YES | Replace the fusing unit. |
NO | • Replace DCPU. • Replace BASEB. |