Oki C7200 Service Manual page 272

Read/Write when
turned on.
Service Call Error detected at
104: Error Engine EEPROM
Checksum when
turned on.
Service Call EEPROM not
105: Error detected when
turned on.
Service Call Error detected at
106: Error Engine Control
Logic.
Service Call Error detected at
120: Error the Power unit
~ 122 Error cooling fan in the
Controller cavity.
Service Call Inappropriate
123: Error ambient RH
detected by a
sensor
Service Call: Inappropriate
124 Error ambient temp.
detected by a
sensor.
Copyright 1999, Okidata, Division of OKI America, Inc. All rights reserved.
Does the error repeat?
No EEPROM?
Does the error repeat?
Does the error repeat?
1) Is the error message displayed?
2) Does the error repeat?
1) Is the error message displayed?
2) Does the error repeat?
1) Is the error message displayed?
2) Does the error repeat?
Yes Replace the engine
control board (71K).
Yes Confirm the existence of
Yes EEPROM. Without it
mount an EEPROM.
Replace the engine
control board (71K).
Yes Replace the engine
control board (71K).
Yes Turn off/on the printer.
Yes Replace the fan motor.
Yes Turn off/on the printer.
Yes Replace the RH sensor.
Yes Turn off/on the printer.
Yes Replace the
temperature sensor.