Canon imageRUNNER ADVANCE C5051 Series Service Manual page 479

Flow■C:■Main■Controller■Analysis■Flow
■ Status■Check ■
If■the■Main■Controller■1■LED■8■and■Main■Controller■2■LED■4■cannot■be■turned■ON,■identify■
the■location■of■the■failure■according■to■the■flow.
● Flow■for■narrowing■down■troubles ■
Pre-check■items
•■ Check■whether■the■Main■Controller■1■and■Main■Controller■2■are■connected■properly■to■the■
Riser■PCB.
•■ Disconnect■and■then■connect■the■DIMMs■on■the■Main■Controllers.■Try■interchanging■them■
with■each■other.
•■ Try■disconnecting■and■then■connecting■the■Flash■PCB.
•■ Check■whether■the■cables■between■the■Main■Controller■1■and■the■Control■Panel■are■
connected■properly.
If■the■Control■Panel■is■not■turned■ON■even■after■these■checks,■try■identifying■the■location■of■
the■failure■through■the■following■procedure.
RISER PCB
Main Controller PCB1
DIMM
Flash PCB
6
Troubleshooting■>■Startup■System■Failure■Diagnosis■>■Flow■C:■Main■Controller■Analysis■Flow■>■Status■Check
Main Controller PCB2
6 Troubleshooting■>■Startup■System■Failure■Diagnosis■>■Flow■C:■Main■Controller■Analysis■Flow■>■Status■Check
Analysis complete
(1)
Visually check the
Main Controller 1 LED 8
No
Is LED 8 ON?
Yes
(2) After turning OFF the power of
the host machine, remove the Main
Controller 2 from the host machine and
turn OFF the power of the host machine.
Replace the Main
Controller PCB1
F-6-28
- Check whether the Main Controller 1 and Main Controller 2
are connected properly to the Riser PCB.
- Disconnect and then connect the DIMMs on the
Main Controllers. Try interchanging them with each other.
- Try disconnecting and then connecting the Flash PCB.
- Check whether the cables between the Main Controller 1
and the Control Panel are connected properly.
Yes
Has the machine
normally started up?
No
(1) Visually check the
Main Controller 2 LED 4
Yes
Is LED 4 ON?
No
(2) After turning OFF the power of
the host machine, remove the Main
Controller 2 from the host machine and
turn OFF the power of the host machine.
Visually check the
(1)
Main Controller 1 LED 8
Is LED 8 ON?
Yes
(3)
E60Is E602 displayed?
(Wait about five minutes until it
is displayed)
Yes
Replace the Main Replace the Main
Controller PCB2
Restart the host machine
6-25
No
No
Controller PCB1
F-6-29
6-25