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E423 may occur at power-on or during scanning.
When the symptom occurs, perform the following remedy.
- E423-0001 can be displayed when an SDRAM access error occurs.
- E423-0002 can be displayed when an SDRAM verification error occurs.
- E423-0003 can be displayed when an SDRAM unit number error occurs.
Workaround :
1. When a faulty image ascribed to CIS scanning side occurs at two-sided simultaneous scanning, re-fit J308 connector on the interface PCB, and then make copies.
2. Suspect poor connection of the DIMM mounted on the backside of the memory PCB (FM3-4436-000) found in the reader unit. Remove the DIMM, clean its terminal with lint-free paper moistened with alcohol, re-fit the DIMM, and then make copies again.
E423 may occur at power-on or during scanning.
When the symptom occurs, perform the following remedy.
- E423-0001 can be displayed when an SDRAM access error occurs.
- E423-0002 can be displayed when an SDRAM verification error occurs.
- E423-0003 can be displayed when an SDRAM unit number error occurs.
Workaround :
1. When a faulty image ascribed to CIS scanning side occurs at two-sided simultaneous scanning, re-fit J308 connector on the interface PCB, and then make copies.
2. Suspect poor connection of the DIMM mounted on the backside of the memory PCB (FM3-4436-000) found in the reader unit. Remove the DIMM, clean its terminal with lint-free paper moistened with alcohol, re-fit the DIMM, and then make copies again.
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