Oki IP-6620 Maintenance Manual page 288

5.5.43 System Error 270X: Ink Supply Pump Sensor Error
<Description>
While the ink supply motor for the subtank is running, ink supply pump sensor X condition does
not change even after a specified time period has passed.
X
0
1
2
3
4
5
6
<Faulty part>
(1) PCB-ASSY-ACT3
(2) SUPPLY PUMP, MW
<Action>
Check the Items to be Checked on the table below, and perform the actions on the ink supply
pump sensor starting from the top until the problem is solved.
(For LCIS models only)
Check that there is the connector for LCIS model identification.
No
1 Harness condition
2 Motor and sensor operation
3
SUPPLY PUMP
4
PCB-ASSY-ACT3
Chapter 5 Troubleshooting (Engine Section and USB Controller Section)
Ink supply pump sensor No.
No.1
No.2
No.3
No.4
No.5
No.6
No.7
Items to be Checked
OKI Data Infotech Corporation CONFIDENTIAL
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.
Enter the ACTUATORS menu in the maintenance mode, and
operate the ink supply pump causing the error with INK TO
SUBTANK or INK TO CARTRIDGE. Then check that the
motor operates.
If the motor does not operate, the error was caused by a
motor-related problem. If the motor operates, the error was
caused by a sensor-related problem or a defective roller
(PUMP).
Then stop the ink supply pump operation with STOP, PUMP
CLOSED.
Replace the SUPPLY PUMP.
Replace the PCB-ASSY-ACT3.
Action
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