Troubleshooting List; Operation Failures; Image Failures - Canon imageFORMULA DR-M140 Service Manual

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

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

2. Image Failures

No.
Failure
1 All black/all white/all
streaked.
2 Too dark/too light.
3 Streaks in image.
4 Image slanted.
5 Wrong image size.
6 Text cannot be seen.
7 Moire in image.
COPYRIGHT © CANON ELECTRONICS INC. 2011
Cause System/
Software
X
not
X
not
is
X
Table 5-301
Cause System/
Software
X
Table 3-302
CANON DR-M140 FIRST EDITION
CHAPTER 5 TROUBLESHOOTING
Note: Major causes of each failure are marked "X".
Hard- Connec-
ware tion
X X
X
X X
X
Note: Major causes of each failure are marked "X".
Hard- Connec-
ware tion
X
X
Dirt/ Docu-
Settings
dust ment
X X
Dirt/ Docu-
Settings
dust ment
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
5-37