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Item No.
U091
How to view test copies
blank sheet
No lines
Black lines
Black lines
No lines
Setting: Threshold value setting
1. Select the item to be set.
2. Change the value using the +/- or numeric keys.
Display
Threshold
(R)(G)(B)
Threshold
(Abnormal)
Mode
* : Normally the Threshold (Com) value should not be changed from 112, the initial setting.
If white lines appear even though the CIS roller and glass are not dirty, raise the set value.
If fine lines in some originals disappear, lower the set value.
Set within the range 50 to 200. (If set outside this range, the image may be affected.)
3. Press the start key. The value is set.
Completion
Press the stop key. The screen for selecting a maintenance item No. is displayed.
Y116141-8
Description
black band
No lines
-
White lines
Dirty CIS roller or CIS
glass
No lines
Engine side
White lines
Engine side
Description
Displaying of abnormal pixel detection
threshold value for color RGB
Abnormal pixel threshold value setting
Switching between white line correction
mode ON/OFF
1-3-59
Causes
Corrective measures
Complete
Clean CIS roller or CIS glass
and then perform U091 again
U091 ends, check engine
U091 ends, check engine
0 to 1023
0 to 8191
0: OFF/
1: ON/
2: Test mode
Setting
Initial
range
setting
112/112/
112
75
0
Service Manual
2NP
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