Operation Troubleshooting; Power Does Not Come On; No Scanner Is Found - Canon imageFORMULA P-208 Service Manual With Parts Catalog

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
Connection of USB
cable
Pickup tray open-
ing/closing
USB hub
Tray switch
Control PCB

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
Power Supply
Computer, I/F card
Driver
(If the Auto Start
switch is "OFF")
5-34
Step Check Item
1 Is the USB cable connected?
2 Is the pickup tray open?
3 Is the USB hub used?
Bus power type cannot be
used.
Self power type can be used,
but it is not guaranteed.
4 Was the problem solved by
replacing of control PCB?
Table 5-401
Step Check Item
1 Is power supplied to the
machine?
2 Are the computer and I/F
card appropriate?
3 Is a "?", "!" or "x" mark dis-
played on this machine in the
Windows device manager?
Table 5-402
COPYRIGHT © CANON ELECTRONICS INC. 2012
Result Action
Connect.
NO
Open.
NO
Remove.
YES
YES Done.
Result Action
NO Perform
Does Not Come ON".
NO Use
equipment.
YES Reinstall the driver.
CANON P-208 FIRST EDITION
"1. Power
appropriate