Oki IP-6620 Maintenance Manual page 277

5.5.36 System Error 250X: Media Heater Thermistor Error
<Description>
The heater thermistor read value is:
- -20°C or less; or
- 200°C or more
X
1
2
3
<Faulty part>
(1) PCB-ASSY-ACT3
(2) PCB-ASSY-IPB5-100
(3) For 2501: Supply-side paper guide
(4) For 2503: Take-up side paper guide
(5) For 2502: Platen
(6) CABLE(Thermistor)-ASSY(MW)
<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
Thermistor's harness condition
1
2 Thermistor
3 PCB-ASSY-ACT3
4 PCB-ASSY-IPB5-100
5-118
Chapter 5 Troubleshooting (Engine Section and USB Controller Section)
Media Heater
Preheater
Printheater
Afterheater
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.
Replace the whole unit including the thermistor causing the
error.
Replace the PCB-ASSY-ACT3.
Replace the PCB-ASSY-IPB5-100.
Action