Check The Lighting Of The Led On The Main Controller; Location Of Leds - Canon imageRUNNER ADVANCE C350 series Service Manual

Operation Check of the Main Controller LEDs
Overview
You may be able to determine the remedies against Main Controller-related troubles by
checking the lighting status of LEDs on the PCB.

■ Location of LEDs

Main Controller PCB
LED9
LED7001
SATA_FLASH
■ Preconditions
Check whether the connectors are securely connected. LEDs are not lit when the contact is
poor. (Power-on is not possible)
When the LED of the Control Panel main power is not lit, check the connection of cables (such
as UI Cable).
6
Troubleshooting > Operation Check of the Main Controller LEDs > Overview > Check the lighting of the LED on the Main Controller
LED7002
LED1
6 Troubleshooting > Operation Check of the Main Controller LEDs > Overview > Check the lighting of the LED on the Main Controller

■ Check the lighting of the LED on the Main Controller

LED7002 lights up.
Yes
LED7001 lights up.
Yes
LED9 lights up.
Yes
Flash PCB
LED1 lights up.
Yes
Yes
F-6-124
No
No
No
Check for poor connection of the connector
on the FLASH PCB.
Replace the FLASH PCB.
No
Replace the Main Controller PCB.
1. Replace the Main Controller PCB.
No
2. Replace the FLASH PCB.
6-87
F-6-125
6-87