Description: LED controller output trouble (Yellow)
Causes: When printing, the print end signal for each page is not properly provided.
Remedy: Case 1 Cause Disconnection of the LED head connector Check & Remedy Check connection of the LED head connector. Case 2 Cause Disconnection of the harness inside the LED head. Check & Remedy Replace the LED head unit Case 3 Cause ICU PWB abnormality Check & Remedy Replace the ICU PWB.
Code: E7 28
Description: LED control ASIC connection abnormality
Causes: Access error between the PCU PWB CPU and the LED control ASIC
Remedy: Case 1 Cause Disconnection of the ICU/ PCU PWB communication connector Check & Remedy Check connection of the ICU/PCU PWB communication connector Case 2 Cause ICU/PCU PWB communication harness trouble. Check & Remedy Check the ICU/PCU PWB communication harness. Case 3 Cause ICU PWB/PCU PWB trouble Check & Remedy Check grounding of the machine. Replace the IC
Code: E7 40
Description: Color correction data write error
Causes: Data write error to the Nand-Flash for holding color correction data
Remedy: Case 1 Cause Color correction data rewrite error Check & Remedy Perform rewriting of color correction data again. Case 2 Cause MFP PWB trouble Check & Remedy Replace the MFP PWB.
Code: E7 41
Description: Color correction data transfer abnormality
Causes: Data transfer error from the Nand-Flash for holding color correction data to the FC-RAM for holding color correction image process
Remedy: Replace the MFP PWB.
Code: E7 80
Description: ICU-SCN communication trouble (ICU detection)
Causes: Communication establishment error, framing, parity, protocol error
Remedy: Case 1 Cause Disconnection of the ICU/ MFP PWB scanner communication connector. Defective harness of the ICU PWB and the MFP PWB. Check & Remedy Check connection of the ICU PWB and the MFP PWB. Check the harness. Case 2 Cause ICU/MFP PWB trouble Check & Remedy Check grounding of the machine. Replace the ICU PWB or the MFP PWB.
Code: E7 90
Description: ICU-PCU communication trouble (ICU detection)
Causes: Communication establishment error, framing, parity, protocol error
Remedy: Case 1 Cause Disconnection of the ICU/ PCU PWB scanner communication connector. Defective harness of the ICU PWB and the PCU PWB. Check & Remedy Check connection of the ICU PWB and the PCU PWB. Check the harness. Case 2 Cause ICU/PCU PWB trouble Check & Remedy Check grounding of the machine. Replace the ICU PWB or the PCU PWB.