Gestetner A294 Service Manual page 254

SERVICE PROGRAM MODE
Mode No.
(Class 1, 2 and 3)
4-903 Filter Setting
10 Pre-filter Type
(Text mode
25% ~ 49%)
11 Pre-filter Type
(Text mode
50% ~ 154%)
Pre-filter Type
12
(Photo mode)
13 Pre-filter Type
(Text/Photo
mode 25% ~
49%)
14 Pre-filter Type
(Text/Photo
mode 50% ~
154%)
15 Pre-filter Type
(Pale mode)
16 Pre-filter Type
(Generation
mode)
20 Filter Level -
Text
(25% ~ 49%)
Main Scan
Direction
Filter Level -
21
Text
(25% ~ 49%)
Sub Scan
Direction
22 Filter Strength -
Text
(25% ~ 49%)
Main Scan
Direction
23 Filter Strength -
Text
(25% ~ 49%)
Sub Scan
Direction
SM
CÓPIA NÃO CONTROLADA
Selects the pre-filter type.
S
0: None
1: Smoothing (Normal)
S
2: Smoothing (Weak)
3 ~ 5: Special smoothing filters which
reduce moiré but do not weaken the
S
edges of low contrast text. A suitable
filter should be selected depending
on the original type.
6: MTF (Weak)
S
7: MTF (Normal)
8 ~ 10: Special smoothing filters only for
the main scan direction. These
filters should be used if the edges
S
of lines that are parallel to the sub
scan line are weakened when a
filter from 3 ~ 5 is selected. A
S
suitable filter should be selected
depending on the original type.
This SP is ignored unless the user selects
S
'Service Mode' in UP mode.
Selects the MTF filter coefficient in the
main scan direction for 25% ~ 49%
reduction for text mode. Settings 0 to 6 are
MTF filters, and settings 7 to 13 are moiré
S
erase filters.
0: Weak 6: Strong 7: Weak 13: Strong
This SP is ignored unless the user selects
'Service Mode' in UP mode.
Selects the MTF filter coefficient in the sub
scan direction for 25% ~ 49% reduction for
text mode.
S
0: Weak 6: Strong
This SP is ignored unless the user selects
'Service Mode' in UP mode.
Selects the MTF strength in the main scan
direction for 25% ~ 49% reduction for text
mode.
S
0: Weak 6:Strong
This SP is ignored unless the user selects
'Service Mode' in UP mode.
Selects the MTF strength in the sub scan
direction for 25% ~ 49% magnification for
text mode.
0: Weak 6: Strong
S This SP is ignored unless the user selects
'Service Mode' in UP mode.
4-32
CÓPIA NÃO CONTROLADA
Function
Rev. 9/2001
Settings
0 ~ 10
1/step
1
0 ~ 10
1/step
0
0 ~ 10
1/step
1
0 ~ 10
1/step
1
0 ~ 10
1/step
0
0 ~ 10
1/step
1
0 ~ 10
1/step
1
0 ~ 13
1/step
3
0 ~ 6
1/step
3
0 ~ 6
1/step
1
0 ~ 6
1/step
0
A294/A295