Oki C7200 Service Manual - Page 271

Service Call 041: Error Service Call 050: Error U Flash Error. On-CU-board Flash ROM Error Operator Panel Error Does the error message appear again? Yes Does the error message appear again? Yes Service Call 051: Error CU Fan Error. On-CU-board CPU Cooling Fan Problem Service Call 063: Error Network Comm. Error. CU - NIC H/W I/F Problem Is the on-Cu-board connector No connected properly? Can the printer Yes recover from the error by replacing the No fan? Is the network board installed properly? No Can the printer recover from the error Yes by replacing the network board? No Service Call 070: Error Service Call 072: Error CANT_HAPPEN. PS F/W Problem Detection Engine Communication Error PU - CU I/F Error Service Call 073: Error ~ 075: Error Video Overrun Detect Is it recovered by turning the printer No off/on. Is the CU Assy installed properly? Can No the printer recover from the error by Yes replacing the CRM board? Is the CU Assy installed properly? No Can the printer recover from the error Yes by replacing the CRM board? Service Call Error detected at Does the error repeat? No 100/101: Engine ROM Yes Error Checksum when turned on. Service Call Error detected at Does the error repeat? Yes 102: Error Engine RAM Read/Write when turned on. Service Call Error detected at Does the error repeat? Yes 103: Error Engine SRAM board. (The EEPROM needs replacement). Replace the CRM board. (The EEPROM needs replacement). See the flowchart for the problems with no LCD message displayed. Connect the connector properly. Replace the fan. Replace the CRM board. (The EEPROM needs replacement). Install the network board properly? Replace the network board. Replace the CRM board. (The EEPROM needs replacement) Replace the CRM board. (The EEPROM needs replacement). Install the CU Assy properly. Replace the CRM board. (The EEPROM needs replacement). Install the CU Assy properly. Replace the CRM board. (The EEPROM needs replacement). Replace the PU board. Replace the engine control board (71K). Replace the engine control board (71K). Replace the engine control board (71K).