Oki IP-6620 Maintenance Manual page 255

<Action>
Check the Items to be Checked on the table below, and perform the actions starting from the top
until the problem is solved.
Case 1
The problem below occurred:
X=0 (PCB-ASSY-ACT3 P12V)
X=3 (PCB-ASSY-ACT3 P24VSF)
X=5 (PCB-ASSY-ACT3 P38V)
X=7 (PCB-ASSY-ACT3 P38VAF)
Note:
The power supply system related to this error number is generated from the PSU 38V, and the
power does not pass through the interlock relay. So check the Items to be Checked on the
table below, and perform the actions starting from the top until the problem is solved.
No
1 Power supply unit (38V) harness
2 Cable between the ACT3 and
IPB5
3 PCB-ASSY-ACT3
4 PCB-ASSY-IPB5-100
5 Power supply unit (38V)
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Chapter 5 Troubleshooting (Engine Section and USB Controller Section)
Items to be Checked
OKI Data Infotech Corporation CONFIDENTIAL
(1) Reconnect the CABLE(PSU-ACT-IF)-ASSY(MW) to
the ACT3 and the power supply.
(2) Reconnect the CABLE(PSU-ACT)-ASSY(MW) to the
ACT3 and the power supply.
Reconnect the CABLE(ACT-IPB-IF)-ASSY(MW) to the
ACT3 and the IPB5.
Replace the PCB-ASSY-ACT3.
Replace the PCB-ASSY-IPB5-100.
Replace the power supply unit (38V).
Action