Oki IP-6620 Maintenance Manual page 204

MANUALLY ADJUST
ADV VAL/PRINT POS
<Description>
One of the following errors has been detected during automatic print adjustment.
1. Calibration lower limit error: The sensor light intensity is below the lower limit.
2. Calibration higher limit error: The sensor light intensity is above the higher limit.
3. Adjustment value determination error: A problem has been detected with the detection
results.
<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 Items to be Checked
1 Firmware
2 The media
3 Restart the printer with the media
installed and check that POC is
skipped.
4 Dirt on the PCB-ASSY-ADJ1
sensor surface
5 The connection of the
PCB-ASSY-ADJ1 harness
connectors
6 The PCB-ASSY-ADJ1 harness
condition
7 PCB-ASSY-ADJ1
8 PCB-ASSY-HCB1M
OKI Data Infotech Corporation CONFIDENTIAL
Chapter 5 Troubleshooting (Engine Section and USB Controller Section)
nn： 1 Calibration lower limit error
nn
◎
Upgrade the firmware to the latest version.
Try with a different media.
If POC is not skipped, the problem is not with the media but
probably with the PCB-ASSY-ADJ1 path. Perform the
following solutions in the given order.
If soiled, clean the sensor surface with a soft cloth.
Check that the harness connectors are properly connected
to the board connectors.
- Check that the cables are not disconnected, caught in
order parts, and that the jackets are not damaged.
- Check that the AUTO ADJFFC,MW terminal is not
damaged.
- If a problem is found, replace the part.
Replace the PCB-ASSY-ADJ1.
Replace the PCB-ASSY-HCB1M.
2 Calibration higher limit error
3 Adjustment value judgment error
Action
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