Canon imageRUNNER ADVANCE C3330 Series Service Manual page 428

■ Check the lighting of the LED on the Main Controller
Lighting check of the LED
on the Main Controller PCB
Yes
Yes
Yes
Yes
LED14 lights up.
No
LED7 lights up.
No
Flash PCB
LED1 lights up.
No
Is the machine
started normally?
No
Normal operation
Checking the Non-all-night Power Supply (12V)
1. Error in the connector on the Main Controller PCB
2. Replace the Main Controller PCB.
3. Replace the power supply of the machine
Checking the power supply on the
Main Controller PCB
Replace the Main Controller PCB.
Checking the startup of firmware
1. Check for poor connection of the connector
on the FLASH PCB.
2. Replace the FLASH PCB.
3. Replace the Main Controller PCB.
1. Replace the Main Controller PCB.
2. Replace the FLASH PCB.
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6. Troubleshooting