Oki IP-6620 Maintenance Manual page 297

5.5.50 System Error 2d0X：Automatic Print Adjustment Calibration Error
<Description>
An abnormal voltage has been detected during the voltage check of the automatic print
adjustment.
<Faulty part>
(1) PCB-ASSY-ADJ1
(2) PCB-ASSY-HCB1M
(3) CABLE(ADJ-AD)-ASSY
(4) FFC-ADJ
<Action>
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 PCB-ASSY-ADJ1 sensor condition
FFC's connector connection
2
FFC's external damage
3
4 Harness condition
5 PCB-ASSY-ADJ1
PCB-ASSY-HCB1M
6
5-138
Chapter 5 Troubleshooting (Engine Section and USB Controller Section)
Items to be Checked
OKI Data Infotech Corporation CONFIDENTIAL
Action
Check that the sensor used in automatic print
adjustment is clean.
Softly wipe the sensor surface with a soft cloth or a
piece of paper.
*Do not use ethanol or other substance.
Reconnect the FFC on both the PCB-ASSY-HCB1M
side and the PCB-ASSY-IPB5-100 side.
If the cable terminals are smeared, softly wipe them with
a soft cloth or lint-free paper dampened with ethanol
before connecting them.
Check the following to ensure that the FFC is not
damaged.
- FFC's terminal is detached from its base.
- FFC's edges have not been abraded by friction.
If the FFC is damaged, replace it.
Check that the harness condition is proper as follows.
- The connectors are connected securely.
- The cable is not disconnected.
- The harness is not pinched by other parts.
- The cable jacket is not damaged.
If the harness is damaged, replace it.
Replace the PCB-ASSY-ADJ1.
Replace the PCB-ASSY-HCB1M.