Oki C7400 Maintenance Manual page 96

Message Cause
CU EEPROM Error
Service Call
040: Error
U Flash Error.
Service Call
041: Error On-CU-board Flash
ROM Error
Operator Panel Error
Service Call
050: Error
CU Fan Error.
Service Call
051: Error On-CU-board CPU
Cooling Fan
Problem
Network Comm.Error.
Service Call
063: Error CU ~ NIC H/W I/F
Problem
CANT_HAPPEN.
Service Call
PS F/W Problem
070: Error
Detection
Engine Communication
Service Call
Error
072: Error
PU ~ CU I/F Error
Video Overrun
Service Call
Detect
073: Error
~
075: Error
Error detected at Engine
Service Call
ROM Checksum when
100/101:Error
turned on.
Error detected at Engine
Service Call
102: Error RAM Read/Write when
turned on.
Error detected at Engine
Service Call
103: Error SRAM Read/Write when
turned on.
Error detected at Engine
Service Call
104: Error EEPROM Checksum
when turned on.
EEPROM not detected
Service Call
when turned on.
105: Error
Error detected at Engine
Service Call
106: Error Control Logic.
Service Call Error detected at the
Power unit cooling fan in
120: Error
~ the Controller cavity.
122: Error
Service Call Inappropriate ambient
123: Error RH detected by a
sensor.
Service Call Inappropriate ambient
124: Error temp. detected by a
sensor.
41316401TH Rev.9
Table 5-1-1 Operator Alarms (2/5)
Error Description
Can the printer recover from the error by
replacing the EEPROM on the CU board?
Does the error message appear again?
Does the error message appear again?
Is the on-CU-board connector connected
properly?
Can the printer recover from the error by
replacing the fan?
Is the network board installed properly?
Can the printer recover from the error by
replacing the network board?
Is it recovered by turning the printer off/on.
Is the CU Assy installed properly?
Can the printer recover from the error by
replacing the SWA board?
Is the CU Assy installed properly?
Can the printer recover from the error by
replacing the SWA board?
Does the error repeat?
Does the error repeat?
Does the error repeat?
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?
Oki Data CONFIDENTIAL
Solutions
Yes Replace the EEPROM. (Settings of the
user must be restored on the new.)
No Replace the SWA board.
(The EEPROM needs replacement.)
Yes Replace the SWA board.
(The EEPROM needs replacement.)
Yes See the flowchart for the problems with
no LCD message displayed.
No Connect the connector properly.
Yes Replace the fan.
No Replace the SWA board.
(The EEPROM needs replacement.)
No Install the network board properly.
Yes Replace the network board.
No Replace the SWA board.
(The EEPROM needs replacement.)
No Replace the SWA board.
(The EEPROM needs replacement.)
No Install the CU Assy properly.
Yes Replace the SWA board.
(The EEPROM needs replacement.)
No Replace the PU board.
No Install the CU Assy properly.
Yes Replace the SWA board.
(The EEPROM needs replacement.)
No Replace the PU board.
Yes Replace the engine control board (71K).
Yes Replace the engine control board (71K).
Yes Replace the engine control board (71K).
Yes Replace the engine control board (71K).
Yes Confirm the existence of EEPROM.
Without it, mount an EEPROM.
Yes 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.
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