Oki IP-6620 Maintenance Manual page 285

No
Sensor operation
3
Subtank
4
5 Capping unit
6 Print head
Sensor
7
PCB-ASSY-ACT3
8
5-126
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