Gestetner A294, Service Manual

Page: 313 / 600

USER PROGRAM MODE
SM 4-85 A294/A295
Serv
ice
Ta
b
le
s
4.8.3 IMAGE QUALITY SETTING BY UP MODE
‘Original Mode Level’ in the ‘General Features’ UP menu is related to the ‘MTF
Filter Settings’ SP mode.
If a setting from the above three columns [A] is selected, the MTF level (coefficient)
and MTF strength (SP4-903-20 to 58) are fixed. Any changes to the SP mode
settings are not reflected on the copy. To use the settings specified by SP mode,
the user must select “Service Mode” [B].
The detailed relationship between the different original modes, the UP modes, and
the SP modes are as follows.
Text Mode
Different gamma correction settings are used for “Sharp”, “Normal” or “Soft” mode.
So, when adjusting the “Service Mode” setting, first select a gamma correction
setting for the basic image setting using SP4-903-84.
1. The following tables should be used when 1 (Normal) or 2 (Sharp) is selected
in SP4-903-84.
Magnification Ratio: 25 ~ 49%
MTF Filter Strength Strong Weak
UP mode Sharp Normal
Pre-filter Type – Text
SP4-903-010
1 1 1 1 1
Filter Level – Text
Main Scan Direction
SP4-903-020
13 13 13 13 7
Filter Strength – Text
Main Scan Direction
SP4-903-022
3 2 1 0 0
Soft
Photo Priority
Screened Photo
Soft
Soft
Sharp
Text Priority
Glossy Photo
Sharp
Sharp
Normal
Normal
Normal
Normal
Normal
Text
Text/Photo
Pale
Generation
Photo
Service Mode
Service Mode
Service Mode
Service Mode
Service Mode
A294M511.WMF
[B] [A]
CÓPIA NÃO CONTROLADA
CÓPIA NÃO CONTROLADA