Code :

Code: E7-63
Description: Controller connection trouble (Operation). Compatible trouble between the controller and the operation.
Causes: Combination error between the controller PWB and the operation.
Remedy: Check the controller PWB. Check combination between the controller PWB and the operation.

Code: E7-65
Description: PWB information sum error (controller detection). EEPROM PWB information sum error
Causes: EEPROM device trouble. EEPROM device contact trouble. Device access error due to noises.
Remedy: Replace the PWB.

Code: E7-70
Description: Scanner connection trouble. Unknown PWB identification information is detected on the SCU PWB
Causes: The PWB / firmware which is not supported by the machine specifications is connected.
Remedy: Check the firmware kind and the version. Check the SCU PWB.

Code: E7-71
Description: DSPF connection trouble. An unknown PWB identification information is detected in the DSPF PWB/ combination abnormality with the SCU PWB
Causes: PWB / firmware which does not support the machine specifications is connected.
Remedy: Firmware kind / Version check. DSPF PWB trouble.

Code: E7-75
Description: PWB information sum error (scanner detection). EEPROM PWB information sum error
Causes: EEPROM device trouble. EEPROM device contact trouble. Device access error due to noises.
Remedy: Replace the SCU PWB.

Code: E7-80
Description: Communication trouble between the ICU and the scanner (ICU detection). Communication establishment error, framing error, parity error, protocol error
Causes: Slave unit PWB connector connection trouble. Slave unit PWB and ICU PWB harness trouble. Slave unit PWB mother board connector pin breakage.
Remedy: Check connection of the connector and the harness between the slave unit PWB and the ICU PWB. Check grounding of the machine.

Code: E7-90
Description: Communication trouble between the ICU and the PCU. (ICU detection). Communication establishment error, framing error, parity error, protocol error
Causes: Slave unit PWB connector connection trouble. Slave unit PWB and ICU PWB harness trouble. Slave unit PWB mother board connector pin breakage.
Remedy: Check connection of the connector and the harness between the slave unit PWB and the ICU PWB. Check grounding of the machine.

Code: EE-EL
Description: Auto development adjustment trouble (Overtone abnormality) <Detected only when Sim. 25-2, no trouble memory, only display>. The sample level is 76 or less or the control voltage is 208 or above
Causes: Toner density sensor trouble, charging voltage / developing voltage trouble, toner density trouble, developing unit trouble, PCU PWB trouble.
Remedy: Execute the auto development adjustment with Sim. 25-2.