Oki C7200 Service Manual page 271

Service Call U Flash Error.
041: Error On-CU-board
Flash ROM Error
Service Call Operator Panel
050: Error Error
Service Call CU Fan Error.
051: Error On-CU-board
CPU Cooling Fan
Problem
Service Call Network Comm.
063: Error Error. CU - NIC
H/W I/F Problem
Service Call CANT_HAPPEN.
070: Error PS F/W Problem
Detection
Service Call Engine
072: Error Communication
Error PU - CU I/F
Error
Service Call Video Overrun
073: Error ~ Detect
075: Error
Service Call Error detected at
100/101: Engine ROM
Error Checksum when
turned on.
Service Call Error detected at
102: Error Engine RAM
Read/Write when
turned on.
Service Call Error detected at
103: Error Engine SRAM
Does the error message appear again? Yes
Does the error message appear again? Yes
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 CRM board?
Is the CU Assy installed properly?
Can the printer recover from the error
by replacing the CRM board?
Does the error repeat?
Does the error repeat?
Does the error repeat?
board. (The EEPROM
needs replacement).
Replace the CRM
board. (The EEPROM
needs replacement).
See the flowchart for
the problems with no
LCD message
displayed.
No Connect the connector
Yes properly. Replace the
No fan. Replace the CRM
board. (The EEPROM
needs replacement).
No Install the network
Yes board properly?
No Replace the network
board. Replace the
CRM board. (The
EEPROM needs
replacement)
No Replace the CRM
board. (The EEPROM
needs replacement).
No Install the CU Assy
Yes properly. Replace the
CRM board. (The
EEPROM needs
replacement).
No Install the CU Assy
Yes properly.
Replace the CRM
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).