Oki C7500n Maintenance Manual page 112

Message Cause
Service Call Error detected by toner
160: Y Toner sensor.
161: M Toner
162: C Toner
163: K Toner
Service Call Short circuit in fuser
170: Error thermistor or open
171: Error detected (high temp.
174: Error or low temp.)
175: Error
Service Call Thermistor indicates
172: Error high-temperature error.
176: Error
Service Call Thermistor indicates
173: Error low-temperature error.
177: Error
Service Call Wrong fuser standard.
179: Error
Service Call Communication
180: Error disability with option
~ unit detected by engine.
186: Error
Service Call Communication with
187: Error control panel disabled.
Close cover Printer engine cover
310: Top open.
cover open
Reset fuser Same unit not detected
320: Fuser upon power ON or
error opening cover.
Turn power Printer cannot be used
OFF and wait temporarily due to
321: MOTOR motor overheat.
OVERHEAT
Open/close Sensor output out of
cover range with no media.
323: Paper (Only for Factory Mode)
thickness
error
Open/close
Sensor output gap out
cover of range with no media.
324: Paper (Only for Factory Mode)
thickness
error
Open/close Media detect value out
cover of range.
325: Paper
thickness
error
Open/close U-Heavy mode media
cover detect value out of
326: Paper range.
thickness
error
41955801TH Rev.8
Table 5-1-1 Operator Alarm (4/6)
Error Description
1) Is error message displayed?
2) Does error reoccur?
1) Is error message displayed?
2) Does error reoccur?
1) Is error message displayed?
2) Does error reoccur?
1) Is error message displayed?
2) Does error reoccur?
1) Does fuser match with model and power
voltage?
2) Error reoccurs after setting fuser properly.
1) Is error message displayed?
2) Does error reoccur?
Is cable properly connected to control panel?
1) Check if top cover is open.
2) Check if cover switch is proper.
1) Is error message displayed?
2) Is fuser unit set properly?
3) Does error reoccur?
1) Are foreign objects mixed in sensor?
2) Does printer recover when detecting
paper thickness by opening/closing tray?
3) Does printer recover by power OFF/ON.
1) Are foreign objects mixed in sensor?
2) Does printer recover when detecting
paper thickness by opening/closing tray?
3) Does printer recover by power OFF/ON.
1) Is different media type mixed in?
2) Is media being double fed?
Is different media type mixed in?
Oki Data CONFIDENTIAL
Solutions
Yes Replace toner sensor or assembly
(Y71-PWB).
Yes Same as above.
Yes Turn ON power again.
Yes Replace thermistor and turn power
OFF. Leave aside for 30 min.
Yes Turn ON power again.
Yes Replace thermistor and turn power
OFF. Leave aside for 30 min.
Yes Turn ON power again.
Yes Replace thermistor and turn power
OFF. Leave aside for 30 min.
No Set proper fuser.
Yes Check if fuser is set properly.
Yes Replace fuser.
Yes Turn ON power again.
Yes Replace option unit.
No Connect properly.
Yes Replace control panel and cable.
Yes Close top cover.
Yes Close side cover.
No Replace cover switch.
Yes Check if fuser is set properly.
No Reset fuser and turn ON power again.
Yes Replace fuser unit assembly.
Turn ON power after a while.
Yes Remove foreign objects.
No Normal.
Yes Remove foreign objects.
No Normal.
Yes Remove foreign objects.
Yes Remove foreign objects.
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