• Code: E7-90
• Description: MFP - PCU PWB communication error
• Causes: PCU PWB - MFPC PWB connection trouble. PCU PWB trouble. MFPC PWB trouble.
• Remedy: Check connection of the PCU PWB and the MFPC PWB. Check the ground. Replace the PCU PWB. Replace the MFPC PWB.

• Code: E7-91
• Description: FAX reception image data error
• Causes: Image data process abnormality HDD trouble SD card trouble or contact error Image compression data corruption MFPC PWB trouble DIMM memory trouble or contact error FAX control PWB trouble
• Remedy: Use SIM60-01 to check the read/write operations of the memory. Replace the HDD. Replace or check installation of the SD card. Replace the MFPC PWB. Replace or check installation of the DIMM memory. Replace the FAX control PWB.

• Code: E7-92
• Description: Copy image data error
• Causes: Image data process abnormality HDD trouble Image compression data corruption MFPC PWB trouble DIMM memory trouble or contact error
• Remedy: Use SIM60-01 to check the read/write operations of the memory. Replace the HDD. Replace the MFPC PWB. Replace or check installation of the DIMM memory.

• Code: E7-93
• Description: Copy, image send, FAX, filing, print image data process error
• Causes: Image data process abnormality HDD trouble Image compression data corruption MFPC PWB trouble DIMM memory trouble or contact error
• Remedy: Use SIM60-01 to check the read/write operations of the memory. Replace the HDD. Replace the MFPC PWB. Replace or check installation of the DIMM memory.

• Code: E7-94
• Description: Image file data process error (when importing file data)
• Causes: Image data process abnormality HDD trouble Image compression data corruption MFPC PWB trouble DIMM memory trouble or contact error
• Remedy: Use SIM60-01 to check the read/write operations of the memory. Replace the HDD. Replace the MFPC PWB. Replace or check installation of the DIMM memory.

• Code: E7-96
• Description: MFPC PWB DIMM memory check error
• Causes: Memory data corruption occurs MFPC PWB trouble DIMM memory trouble or contact error
• Remedy: Use SIM60-01 to check the read/write operations of the memory. Replace the MFPC PWB. DIMM memory socket check Replace the DIMM memory.

• Code: EE-EL
• Description: Auto developer adjustment trouble (Over-toner abnormality)
• Causes: Toner density sensor trouble, charging voltage/ developing voltage error, toner concentration trouble, developing unit trouble, PCU PWB trouble.
• Remedy: Use SIM25-2 to perform the auto developer adjustment.

• Code: EE-EU
• Description: Auto developer adjustment trouble (Under-toner abnormality)
• Causes: Toner density sensor trouble, charging voltage/ developing voltage error, toner concentration trouble, developing unit trouble, PCU PWB trouble.
• Remedy: Use SIM25-2 to perform the auto developer adjustment.