Code :

Code: E7-27
Description: LSU LD driver error (Y)
Causes: Reduced laser power, lighting error, laser diode trouble. LSU connector trouble. LD PWB, LSUcnt PWB trouble.
Remedy: Use SIM61-1 to check the operation of the LSU. Check or replace the LSUcnt PWB. Check connection of the LSU connector. Replace the LSU.

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

Code: E7-29
Description: LSU ASIC frequency error
Causes: Oscillation abnormality of the external oscillator used in the LSU ASIC. LSU ASIC abnormality on the LSU PWB. Frequency abnormality of picture transfer clock of SCN-MFP PWB
Remedy: Check or replace the LSUcnt PWB. Check connection of the connector and the harness between the SCN-MFP PWB and the LSUcnt PWB. Check or replace the SCN-MFP PWB.

Code: E7-42
Description: Image data trouble (Scanner expansion PWB (ACRE) ASIC)
Causes: An image data error occurs. An image data send error occurs. Scanner expansion PWB (ACRE) connection trouble. Scanner expansion PWB (ACRE) trouble. SCN-MFP PWB trouble.
Remedy: Check connection of the scanner expansion PWB (ACRE). Check the scanner expansion PWB (ACRE), and replace if necessary. Check the SCN-MFP PWB, and replace if necessary

Code: E7-46
Description: Image data decode error (Scanner expansion PWB (ACRE) ASIC)
Causes: A decode error occurs while high compression PDF images are made. (garbled data) Scanner expansion PWB (ACRE) connection trouble. Scanner expansion PWB (ACRE) trouble. SCN-MFP PWB trouble.
Remedy: Check connection of the scanner expansion PWB (ACRE). Check the scanner expansion PWB (ACRE), and replace if necessary. Check the SCN-MFP PWB, and replace if necessary.

Code: E7-47
Description: Combination of firmware error between the SCN-MFP and the ACRE ASIC
Causes: Written ACRE board of the firmware that a model did not support MFP was connected.
Remedy: Check the kind and the version of the firmware. Use SIM49-1 or SIM49-10 to execute firmware version-up

Code: E7-48
Description: Scanner expansion PWB (ACRE) ASIC memory error
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. SCN-MFP 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 SCN-MFP PWB, and replace if necessary.