Canon LBP-1760 Service Manual page 189

3. Defective envelope feeder driver PCB
Action: Replace the envelope feeder driver PCB.
4. Defective engine controller PCB
Action: Replace the engine controller PCB.
M-8. "5F-62 ERROR" (Feeder Option error)
<Possible causes>
1. Defective paper feeder connector
Action: Remove the paper feeder and check the connector. If any failure is found, replace
it.
2. Defective printer connector
Action: Check the connector. If any failure is found, replace it.
3. Defective paper feeder driver PCB
Action: Replace the paper feeder driver PCB.
4. Defective engine controller PCB
Action: Replace the engine controller PCB.
M-9. "6F-61 ERROR" (Resident ROM checksum error)
<Possible causes>
1. Defective firmware ROM DIMM
Action: Replace the firmware ROM DIMM.
2. Defective video controller PCB
Action: Replace the video controller PCB.
M-10. "6F-63 EEROR" (Resident DRAM checksum error)
<Possible causes>
1. Defective video controller PCB
Action: Replace the video controller PCB.
M-11. "6F-68 EEROR" (NVRAM (EEPROM) error)
<Possible causes>
1. Defective video controller PCB
Action: Replace the video controller PCB.
M-12. "6F-7A EEROR" (SRAM in AIR chip error)
<Possible causes>
1. Defective video controller PCB
Action: Replace the video controller PCB.
CHAPTER 4
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