Oki IP-6620 Maintenance Manual page 278

5.5.37 System Error 251X: Media Heater Error (High temperature)
<Description>
The heater thermistor value is 85°C or more.
As the media heater control is defective, the temperature was increased excessively.
X
1
2
3
<Faulty part>
(1) PCB-ASSY-TRC-MW
(2) PCB-ASSY-ACT3
(3) PCB-ASSY-IPB5-100
<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 Media heater operation
2 PCB-ASSY-TRC-MW
PCB-ASSY-ACT3
3
PCB-ASSY-IPB5-100
4
Chapter 5 Troubleshooting (Engine Section and USB Controller Section)
Media Heater
Preheater
Printheater
Afterheater
Items to be Checked
OKI Data Infotech Corporation CONFIDENTIAL
Start the printer in the ignore fatal error mode.
If the heater temperature increases without + (plus) displayed in the
heater display mode, perform the action No. 2.
If this error occurred with OFF displayed in the heater display
mode, perform the same actions as for system error 250X.
Replace the PCB-ASSY-TRC-MW.
Replace the PCB-ASSY-ACT3.
Replace the PCB-ASSY-IPB5-100.
Action
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