Code :

Code: E7-61
Description: Controller connection trouble (Engine)
Causes: Combination trouble of the controller PWB and the engine
Remedy: Check the controller PWB. Check the combination between the controller PWB and the engine.

Code: E7-62
Description: Controller connection trouble (Scanner)
Causes: Combination trouble between the controller PWB and the scanner
Remedy: Replace the controller PWB. Check the combination between the controller PWB and the scanner.

Code: E7-65
Description: PWB information sum error (Controller detection)
Causes: 1) EEPROM device trouble 2) EEPROM device contact failure 3) Device access error due to electrical noises
Remedy: Replace the MFPcnt PWB.

Code: E7-70
Description: Scanner connection trouble
Causes: Unknown PWB identification information is detected in the SCU PWB.
Remedy: Case 1 Cause SCU PWB trouble Check and remedy Replace the SCU PWB. Case 2 Cause A firmware which is incompatible with the machine specifications is connected. Check and remedy Check the kind and the version of the firmware.

Code: E7-75
Description: PWB information sum error (Scanner detection)
Causes: 1) EEPROM device trouble 2) EEPROM device contact failure 3) Device access error due to electrical noises
Remedy: Replace the scanner control PWB.

Code: E7-80
Description: Communication trouble between the MFP and the scanner (MFP detection)
Causes: Communication establishment error/Framing/ Parity/Protocol error
Remedy: Case 1 Cause SCU PWB connector connection trouble Check and remedy Check the connector connection between the SCU PWB and the MFPcnt PWB. Case 2 Cause Harness trouble between the SCU PWB and the MFPcnt PWB Check and remedy Check the harness between the SCU PWB and the MFPcnt PWB. Case 3 Cause Broken connector pin of the SCU PWB mother board Check and remedy Check grounding of the machine.

Code: E7-90
Description: Communication trouble between the MFP and the PCU (MFP detection)
Causes: Communication establishment error/Framing/ Parity/Protocol error
Remedy: Case 1 Cause PCU PWB connector connection trouble Check and remedy Check the connector connection between the PCU PWB and the MFPcnt PWB. Case 2 Cause Harness trouble between the PCU PWB and the MFPcnt PWB Check and remedy Check the harness between the PCU PWB and the MFPcnt PWB. Case 3 Cause Broken connector pin of the PCU PWB mother board Check and remedy Check grounding of the machine.

Code: EE-EC
Description: Auto developer adjustment trouble (The sample level for every rotation is other than 128 ± 10.)
Causes: Toner density sensor trouble, charging voltage/ developing voltage trouble, toner density trouble, developing unit trouble, PCU PWB trouble
Remedy: Use SIM25-2 to execute the auto developer adjustment.