OKI MC363
Troubleshooting. Abnormal MFP operation after powered on. No operation
Check item | Checking method | Action |
---|---|---|
Checking connections | ||
Connection between the printer and AC power supplied | Check the connection between the printer and AC power supplied. | Connect the AC cable properly. |
Cable assembly connecting low-voltage power supply unit to CU/PU board | Make sure the low-voltage power supply unit is connected to the POWER connector and SP connector on the CU/PU board properly. Check whether the cable connector is half-connected or tilted. | Connect the cable properly. |
Check whether there is any fault in the cable assembly, e.g., missing wires. | Replace the cable with a good cable. | |
Connection between CU/PU board and SU board | Make sure the 16-pin FFC is connected to the OPE_OPM connector on the CU/PU board properly. Make sure the 16-pin FFC is connected to the OPE1 connector on the SU board properly. Check whether the cable connector is half-connected or tilted. |
Connect the FFC cable properly. |
Check for broken wires using a tester. Check visually whether the sheath peels. |
Replace the FFC cable with a good cable. | |
Connection between SU board and OPM board | Make sure the 16-pin FFC is connected to the OPE2 connector on the SU board properly. Make sure the 16-pin FFC is connected to the CN1 connector on the OPM board properly. Check whether the cable connector is half-connected or tilted. |
Connect the FFC cable properly. |
Check for broken wires using a tester. Check visually whether the sheath peels. | Replace the cable with a good cable. | |
Confirmation of the power switch LED | ||
Power Switch LED | Confirm whether the LED is off. If the LED blinks rapidly, the number of blinking times in a cycle shows an error. The timing of blinking rapidly is shown in the below figure | Replace either of the low-voltage power supply unit, the CU/PU board, Power SW-board, the cables connected to the low-voltage power supply unit and CU/PU board or the cables connected to the CU/PU board and Power SW-board. In case of 2, 4, 8 or 10 times of LED blinking rapidly: Replace either of the low-voltage power supply unit, the CU/ PU board, the cables connected to the lowvoltage power supply unit and the CU/PU board. In case of 3, 6 or 9 times of LED blinking rapidly: Replace the CU/PU board. |
Checking power supplies | ||
AC power supplied to printer | Check the supplied voltage of the AC power supplied. | To supplies the AC power |
AC power supplied to CU/PU board | Check the supplied voltage of the connector on the CU/PU board. A)POWER connector 1, 2, 3pin: 5V 7, 8, 9pin: 24V 4, 5, 6pin: 0V B)SP connector 1pin: 3.3V 2pin: 0V |
Replace the low-voltage power supply. Replace the POWER cable or SP cable. |
AC power supplied to SU board | Check the supplied voltage of the POWER connector on the SU board. 1pin: 3.3V 3, 4pin: 5V 7, 8pin: 24V 2, 5, 6, 9, 10pin: 0V |
Replace the CU/PU board or cable. |