Canon P-208, Руководство по обслуживанию с каталогом запчастей

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COPYRIGHT © CANON ELECTRONICS INC. 2012 CANON P-208 FIRST EDITION
5-39
CHAPTER 5 TROUBLESHOOTING
Note:
The level of reproducing the image depends on types of documents and setup conditions.
Changing setup conditions sometimes works.
Confirm whether it is only one side or both sides that image trouble occurs. In the case of
the one side, check an item related to the aspect.
1. All Black/All White/All Streaked
The image is all black, all white, or all streaked.
Cause/Faulty
Location
Step Check Item Result Action
Setting documents 1 Was the document set with
the surface facing down?
If not, the reverse side will
be scanned. NO Set properly.
Setup of “Brightness” 2 “Brightness” setup prop-
erly?
NO Change the setup.
Change "Contrast" if
necessary.
System 3 Was the problem solved by
resetting the power of the
scanner or restarting the
computer? YES Done.
4 Reading-related cables
connected properly?
NO Connect properly. Reading Unit
5 Was the problem solved by
replacing the reading unit? YES Done.
Control PCB 6 Was the problem solved by
replacing the control PCB? YES Done.
Table 5-502
2. Too Dark/Too Light
The image cannot be seen properly because the brightness is inappropriate.
Cause/Faulty
Location
Step Check Item Result Action
Setup of “Brightness” 1 “Brightness” setup prop-
erly?
Normally the brightness
should be set to the me-
dium value, but this may
need to be changed, de-
pending on the document. NO Change the setup.
Setup of “Contrast” 2 “Contrast” setup properly? NO Change the setup.
Light Adjustment 3 Have you executed “Light”
in service mode NO Execute Light Adjust-
ment
Table 5-503