Troubleshooting List; Operation Failures; Image Failures - Canon imageFORMULA DR-G2140 Service Manual

CHAPTER 5 TROUBLESHOOTING
III. TROUBLESHOOTING LIST
The lists below give the major failures conditions and their causes. Refer to the next section
for details of the causes and the measures to be taken.

1. Operation Failures

Cause
No.
Failure
Power does not come
1
ON
2 No scanner is found
Scanner does
3
start
Scanning does not
4
feed properly
Scanning speed is
5
slow

2. Image Failures

Cause
No.
Failure
All black/all white/all
1
streaked
2 Too dark/too light
3
Black Borders
4 Image slanted
5 Streaks in image
6 Outer area disappear
7 Wrong image size
8 Text cannot be seen
5-42
System/
Hard-
Soft-
ware
ware
X
X X
not
X X
X
X
Table 5-301
Note: Major causes of each failure are marked "X".
System/
Hard-
Soft-
ware
ware
X X
X
X
Table 5-302
COPYRIGHT © CANON ELECTRONICS INC. 2018
Note: Major causes of each failure are marked "X".
Connec-
Dirt/dust
tion
X
X
X
Connec-
Dirt/dust
tion
X
Docu-
Settings
ment
X X
Docu-
Settings
ment
X
X
X
X
X
X
X
CANON DR-G2140/G2110/G2090 FIRST EDITION
X
X
X
X
X
X
X
X
X
X