• Code: E7-48
• Description: Scanner expansion PWB (ACRE) ASIC memory error
  - DDR calibration error - DIMM insertion trouble, etc.
• Causes: Scanner expansion PWB (ACRE) DIMM trouble, memory slot trouble. Scanner expansion PWB (ACRE) DIMM insertion trouble. Scanner expansion PWB (ACRE) connection trouble. Scanner expansion PWB (ACRE) trouble. MFPC PWB trouble.
• Remedy: Check insertion of the scanner expansion PWB (ACRE) DIMM memory. Check the scanner expansion PWB (ACRE) DIMM memory, and replace if necessary. Check connection of the scanner expansion PWB (ACRE). Check the scanner expansion PWB (ACRE), and replace if necessary. Check the MFPC PWB, and replace if necessary.

• Code: E7-49
• Description: Water Mark data error
• Causes: Watermark data trouble. HDD trouble.
• Remedy: Use SIM49-5 to upload the watermark data. Replace the HDD.

• Code: E7-50
• Description: Combination error between PWB and firmware (PCU PWB detection)
• Causes: A PWB/firmware/LSU which is not compatible with the machine specifications is detected. PCU PWB trouble LSU trouble
• Remedy: Check the kind and the version of the firmware. Check or replace the LSU. Check or replace the PCU PWB.

• Code: E7-60
• Description: Combination error between PWB and firmware (MFPC PWB detection)
• Causes: A PWB/firmware which is not compatible with the machine specifications is detected in the MFPC PWB. MFPC PWB trouble.
• Remedy: Check the kind and the version of the firmware. Check or replace the MFPC PWB.

• Code: E7-61
• Description: Combination error between the MFPC PWB and the PCU PWB (MFPC PWB detection)
• Causes: Combination error between the MFPC PWB and the PCU PWB. MFPC PWB trouble. PCU PWB trouble.
• Remedy: Check the combination between the MFPC PWB and the PCU PWB. Replace the MFPC PWB. Replace the PCU PWB.

• Code: E7-70
• Description: Scanner connection error
• Causes: Unsupported PWB or firmware is detected.
• Remedy: Upgrade the firmware. Replace the SCU PWB.

• Code: E7-80
• Description: MFP - SCU PWB communication error
• Causes: SCU PWB - MFPC PWB connection trouble. SCU PWB trouble. MFPC PWB trouble
• Remedy: Check connection of the SCU PWB and the MFPC PWB. Check the ground. Replace the SCU PWB. Replace the MFPC PWB.

• 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.