Oki IP-6620 Maintenance Manual page 279

5.5.38 System Error 252X: Media Heater Error (Target temperature not reached)
<Description>
After 30 minutes, the heater temperature is still less than the set temperature.
X
1
2
3
<Faulty part >
(1) CABLE(TRC-CTL)-ASSY(MW)
(2) PCB-ASSY-TRC-MW
(3) PCB-ASSY-ACT3
(4) PCB-ASSY-IPB5-100
(5) For 2521: Supply-side paper guide
(6) For 2523: Take-up side paper guide: FRONT PAPER GUIDE, MW
(7) For 2522: Platen
<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
1 Ambient temperature
2 Power supply voltage
Heater's harness condition
3
4 Thermistor condition
5 CABLE(TRC-CTL)-ASSY(MW)
condition
6 PCB-ASSY-TRC-MW
7 PCB-ASSY-ACT3
8 PCB-ASSY-IPB5-100
5-120
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 ambient temperature is within the operating
temperature range.
Check that the voltage supplied from the socket used for the
heaters is between 200 V and 240 V.
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.
Check that the thermistor properly contacts the heater.
Check that the cable condition is proper as follows.
- The connectors are connected securely.
- The cable is not disconnected.
- The cable is not pinched by other parts.
- The cable jacket is not damaged.
Replace the PCB-ASSY-TRC-MW.
Replace the PCB-ASSY-ACT3.
Replace the PCB-ASSY-IPB5-100.
Action