Flow B: Control Panel Check Flow - Canon imageRUNNER ADVANCE C3330 Series Service Manual

Flow B: Control Panel Check Flow

■ Control Panel Check Flow
Press the Volume key several
times to start work with the
operation sound heard.
sound heard when hard keys
sound heard when the Touch
■ Check item
Item Check item
(1) Control Panel CPU
PCB
J1118: 12V
Is the operation
Yes
are pressed?
No
Is the operation Yes
Panel is pressed?
No
Replace the
Numeric Keypad PCB.
(1)
Is 12V supplied to
the Control Panel?
No
(2)
Is 12V supplied to
the Low-Voltage
Power Suply PCB?
Replace the harness.
No
Replace the Low-voltage
Power Supply PCB.
11.95v
Is the operation
sound heard when the Touch
Panel is pressed?
No
Replace the
Touch Panel.
Yes
(3)
Is the Control Panel
displayed after replacing the
Control Panel CPU PCB?
Yes
No
Return the Control Panel
CPU PCB to its original position,
and replace the Main Controller Unit.
Location
422
6. Troubleshooting
Yes
Remove the Control
Panel CPU PCB.
Yes
The Control Panel CPU
PCB was faulty. End the
flow as the PCB has
already been replaced.