Oki IP-6620 Maintenance Manual page 287

No
3 Sensor operation
4 Subtank
5
Capping unit
6
Print head
7 Sensor
8 PCB-ASSY-ACT3
5-128
Chapter 5 Troubleshooting (Engine Section and USB Controller Section)
Items to be Checked
OKI Data Infotech Corporation CONFIDENTIAL
Enter the MONITOR menu in the maintenance mode and
check that the subtank empty sensor and full sensor
operates properly.
If the sensor operates properly, perform the action No.4. If
the sensor does not operate, perform the action No.7.
Replace the subtank.
Then perform the actions No.5 and 6 as preventive
measures.
(1) Check that the air release solenoid valve is not soiled
with ink. If soiled, clean it with a cleaning stick and the
cap cleaning liquid.
(2) Check that the pump operates by performing the FILL
CAP or PH.RECOVERY operation. If the pump does
not operate, replace the capping unit.
(3) Regardless of the results of the actions above, replace
the cap and pump corresponding to the error number.
If 11 or more nozzles are clogged on the print head of the
subtank causing the error, perform the FILL CAP or
PH.RECOVERY operation.
If the problem persists, replace the print head.
Replace the defective sensor found in the step 3.
Replace the PCB-ASSY-ACT3.
Action