• Code: E7-22
• Description: LSU LD deform error (M)
• Causes: Reduced laser power, lighting error, laser diode trouble. Harness and connector trouble between the LD PWB and the LSU cnt PWB.
• Remedy: Use SIM61-1 to check the operation of the LSU. Check the PWB and connection of the harness in the LSU. Replace the LSU.

• Code: E7-23
• Description: LSU BD(MY) detection error / LSU LD deform error (K)
• Causes: Optical axis shift. Reduced laser power, lighting error, laser diode trouble. Harness and connector trouble between the LD(MY) PWB and the LSU cnt PWB.
• Remedy: Use SIM61-1 to check the operation of the LSU. Check the PWB and connection of the harness in the LSU. Replace the LSU.

• Code: E7-28
• Description: LSU-MFP connection error
• Causes: Communication error between the CPU in the MFP PWB and the control ASIC. Improper connection of the communication connector between the MFP PWB and the LSU cnt PWB. Harness trouble between the MFP PWB and the LSU cnt PWB MFP PWB or LSU cnt PWB trouble
• Remedy: Check connection of the connector and the harness between the MFP PWB and the LSU cnt PWB. Replace the LSU PWB. Replace the MFP PWB.

• Code: E7-29
• Description: LSU ASIC frequency error
• Causes: Oscillation abnormality of the external oscillator and the internal oscillating circuit used in the LSU ASIC. LSU ASIC abnormality on the LSUcnt PWB.
• Remedy: Check connection of the connector and the harness between the MFP PWB and the LSUcnt PWB. Replace the MFP PWB. Replace the LSU.PWB.

• Code: E7-38
• Description: Zoran chip AD adjustment error
• Causes: The voltage on MFPC PWB is not stable The parts on the MFPC PWB are not soldered properly.
• Remedy: Replace the MFPC PWB.

• Code: E7-80
• Description: Flex RISC- SCU communication error
• Causes: FlexRISC trouble
• Remedy: Check fixation of the MFPC PWB Replace the MFPC PWB.

• Code: E7-91
• Description: FAX reception image data error
• Causes: FAX control PWB trouble Image data process abnormality Flash memory contact error Image compression data corruption Control PWB trouble
• Remedy: Replace the fax control PWB Sim60-1 to check the read/write operations of the memory Replace the MFPC PWB

• Code: E7-93
• Description: Copy, image send, FAX, filing, print image data process error
• Causes: Image compression data corruption Image data process abnormality Control PWB trouble
• Remedy: Replace the mother board. Sim60-1 to check the read/write operations of the memory Replace the MFPC PWB