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5-34
COPYRIGHT © CANON ELECTRONICS INC. 2012
CANON P-208 FIRST EDITION
CHAPTER 5 TROUBLESHOOTING
IV. OPERATION TROUBLESHOOTING
When an operation problem occurs, check the error message displayed on the display
connected to a computer. Also perform an operation check on the sensors and motor using the
service mode.
1. Power Does Not Come ON
The start button is not lit.
Cause/Faulty
Location
Step
Check Item
Result
Action
Connection of USB
cable
1
Is the USB cable connected?
NO
Connect.
Pickup tray open-
ing/closing
2
Is the pickup tray open?
NO
Open.
USB hub
3
Is the USB hub used?
Bus power type cannot be
used.
Self power type can be used,
but it is not guaranteed.
YES
Remove.
Tray switch
Control PCB
4
Was the problem solved by
replacing of control PCB?
YES Done.
Table 5-401
2. No Scanner is Found
Note:
If the Auto Start switch is "ON", this machine is recognized as a storage device
"ONTOUCHLITE" of the computer. If it is "OFF", it is recognized as a scanner.
Cause/Faulty
Location
Step
Check Item
Result
Action
Power Supply
1
Is power supplied to the
machine?
NO
Perform “1. Power
Does Not Come ON”.
Computer, I/F card
2
Are the computer and I/F
card appropriate?
NO
Use appropriate
equipment.
Driver
(If the Auto Start
switch is "OFF")
3
Is a "?", "!" or "x" mark dis-
played on this machine in the
Windows device manager?
YES
Reinstall the driver.
Table 5-402
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