Canon imageRUNNER ADVANCE C5255 Series Service Manual page 672

■ Check the lighting of the LDEs on the Main Controller PCB 1
• Main Controller PCB 1 - LED9, LED16
• Flash PCB - LED1
Check the lighting of the LDEs on
the Main Controller PCB 1
- Check for any blown-out fuse of the Relay Board
- Check whether the connector (on the Main
LED16 is lit.
Controller PCB 1 side) is securely connected
No
- Replace the Main Controller PCB
Yes
Determine the faulty PCB by the error code (E602-0001) after
removing the Main Controller PCB 2 and turning ON the power.
LED9 is lit.
- No error code is displayed => Replace the Main Controller PCB 1
No
- Error code (E602-0001) is displayed => Replace the Main Controller
Yes
PCB 2
- Check for poor connection of the FLASH PCB connector
LED1 of the Flash
- Replace the FLASH PCB / Main Controller PCB 1
PCB is lit.
- In the case of startup failure (error code cannot be displayed)
No
although the LED is lit, replace the FLASH PCB
Yes
Replace the
Normal startup
FLASH PCB
No
Yes
Normal operation
6
Troubleshooting > Controller Self Diagnosis > Operation Check of the Main Controller LEDs > Check the lighting of the LDEs on the Main Controller PCB 1
6 Troubleshooting > Controller Self Diagnosis > Operation Check of the Main Controller LEDs > Check the lighting of the LDEs on the Main Controller PCB 1
F-6-168
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