Oki IP-6620 Maintenance Manual page 310

No Items to be Checked
3 The unit connected to the
PCB-ASSY-HCB1M
4 The width of the V-shaped folded
part on the
PCB-ASSY-HCB1M-side FFC
FFC's external damage
5
6 FFC's connector connection
Robot cable's connector
7
connection
8 PCB-ASSY-HCB1M
9 INKJET HEAD,MW (print head)
10 PCB-ASSY-IPB5-100
11 FFC
12 Robot cable
OKI Data Infotech Corporation CONFIDENTIAL
Chapter 5 Troubleshooting (Engine Section and USB Controller Section)
(1) Check that the print head cable jacket is not damaged.
If damaged, replace it.
(2) If not damaged, reconnect it and restart the printer.
(3) If the problem persists, replace the cable of the faulty
print head with one of a print head operating normally.
If the error number changes, the faulty part is the print
head cable so replace it.
(4) Connect the print head cable to another print head. If
the error number changes for the newly connected
print head, check the other items to be checked below.
* The print head cable for the seventh print head is used
only for 7-color printers.
Check that the width of the V-shaped folded part on the FFC
is proper. If not, adjust it. For the adjustment procedure, see
6.8.4 PCB-ASSY-HCB1M.
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.
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.
Reconnect the robot cable on both the PCB-ASSY-HCB1M
side and PCB-ASSY-ACT3 side.
Before connecting, check that the connector terminals and
cable connection part are not disconnected. If a connection
failure is found, replace the robot cable.
Replace the PCB-ASSY-HCB1M.
Replace the defective print head.
Replace the PCB-ASSY-IPB5-100.
Replace all four FFCs.
Replace the robot cable.
Action
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