Canon imageRUNNER ADVANCE C5051 Series Service Manual page 475

● Check■item ■
Item Check■item
(1) Control■Panel■
LED
(2) Main■Controller■
PCB1:■LED8
LED8
You■can■check■the■activation■of■LED8■(green)■through■the■fan■of■the■Main■Controller■1.
(3) RISER■PCB■
Main Controller PCB1
C26(3.3V)
6
Troubleshooting■>■Startup■System■Failure■Diagnosis■>■Flow■A:■Execution■Flow■for■Control■Panel■Startup■Failure■■>■Status■Check
Location
LED8
RISER PCB Main Controller PCB2
C26
Tester
6 Troubleshooting■>■Startup■System■Failure■Diagnosis■>■Flow■A:■Execution■Flow■for■Control■Panel■Startup■Failure■■>■Status■Check
Item Check■item
(4a) Main■Controller■
PCB1:■LED8
Main■Controller■
PCB2:■LED4
LED8
(4b) Check■each■
of■the■pins■1■
through■4■(12V)■
of■J104■on■the■
Riser■PCB.
*■e.g.
pins■1(12V)■
and■pins■pins■
5(GND)
6-21
Location
LED4
1 - 4 5
J104
T-6-11
6-21