• Code: E7-11
• Description: Shading trouble (White correction). CCD white reference plate scan level abnormality when the copy lamp is turned on
• Causes: Installation failure of the harness to the CCD unit Dirt on the mirror, lens, and the reference white plate. Copy lamp lighting abnormality. CCD unit abnormality, SCU PWB abnormality.
• Remedy: Check installation of the harnesses to the CCD unit. Check installation of the harnesses to the copy lamp unit. Clean the mirror, the lens, and the referencewhite plate. Check the CCD unit and the SCU PWB.

• Code: E7-14
• Description: CCD-ASIC abnormality (OC). The written register value cannot be read
• Causes: SCU PWB abnormality
• Remedy: Check the SCU PWB.

• Code: E7-18
• Description: W-ICU memory specification error (ICU2). DIMM of different specification is detected in the W-ICU memory slot
• Causes: DIMM of different specification is inserted to the W-ICU memory slot. (Support memory: ROW=13bit, Colum=10bit part)
• Remedy: Check the installed DIMM.

• Code: E7-19
• Description: W-ICU memory combination error (ICU2). Combination error of the W-ICU memory slot installation
• Causes: DIMM of other than 256MB is inserted into the default slot. DIMM of other than 512MB is inserted to the expansion slot.
• Remedy: Check the installation combination of DIMM.

• Code: E7-20
• Description: LSU BD detection trouble. The BD signal of the LSU is not detected
• Causes: Optical axis shift. BK laser deterioration, power down. BD PWB abnormality. Disconnection or improper insertion of the harness and the connector between the LD / BD PWB and the LSU control PWB.
• Remedy: Check the LSU operation with Sim. 61-1. Check connection of PWB and the harness in the LSU. Replace the LSUcnt, BD PWB. If the trouble is not canceled, replace the LSU.

• Code: E7-21
• Description: LSU LD deterioration trouble. Laser is not lighted normally.
• Causes: Laser deterioration, power fall. Disconnection or insertion failure of the harness or connector between the LD PWB and the LSUcnt PWB.
• Remedy: Use Sim. 61-1 to check the operation of the LSU. Check connection of the harness in each PWB in the LSU. Replace the LSUcnt PWB. If the trouble is not canceled, replace the LSU.

• Code: E7-27
• Description: LSU configuration check error. LSU PWB control PWB FPGA configuration trouble
• Causes: Communication connector connection trouble between the PCU PWB and the LSU cnt PWB. Harness trouble between the PSU PWB and the LSU cnt PWB (interface PWB). PCU PWB trouble or LSU cnt PWB (interface PWB) trouble.
• Remedy: Check connection of the connector and the harness between the PCU PWB and the LSU cnt PWB (interface PWB). If the trouble is not canceled, replace the LSUcnt PWB, or replace the PCU PWB.

• Code: E7-28
• Description: LSU control ASIC connection abnormality. Access error between the CPU on the PCU PWB and the LSU control ASIC
• Causes: Communication connector connection trouble between the PCU PWB and the LSUcnt PWB (interface PWB). Harness trouble between the PCU PWB and the LSUcnt PWB. PCU PWB or LSUcnt PWB (interface PWB) trouble.
• Remedy: Check connection of the connector and the harness between the PCU PWB and the LSUcnt PWB (interface PWB). If the trouble still remains, replace the LSUcnt PWB and the PCU PWB.