Gestetner A193 Service Manual page 182

Mode No.
Class
Class 3
1 and 2
Photo Select
(Normal
1 Dither
Pattern)
4-421*
Photo Select
(B&W)
2 * (Dither
Pattern)
Scanner
4-902
Lamp On
SBU Gain
Adjustment
4-904*
SBU DC
Count
Adjustment
4-905*
SBU
Reference
Value
4-906* Adjustment
SBU Offset
Value
Adjustment
4-907*
SBU Auto
Adjustment
4-908*
EDU Test
4-909*
Mode
SM
Function
Selects the dither pattern used in
grayscale processing mode.
A greater number of lines gives a more
detailed copy. If the value is changed, the
UP mode setting is also changed.
Selects the dither pattern used in binary
picture processing mode.
A greater number of lines gives a more
detailed copy. If the value is changed, the
UP mode setting is also changed.
Turns on the exposure lamp.
To turn off the exposure lamp, select "0".
Adjusts the coefficient of the D/A
converter for the standard AGC gain curve
Do not adjust this value. However, after
performing the memory all clear
(SP5-801), use it to re-input the previous
value.
Adjusts the coefficient of the D/A
converter for the AGC gain curve for dc
count.
Do not adjust this value. However, after
performing the memory all clear
(SP5-801), use it to re-input the previous
value.
Adjusts the coefficient of the D/A
converter for the AGC gain curve for
scanning the white plate.
Do not adjust this value. However, after
performing the memory all clear
(SP5-801), use it to re-input the previous
value.
Adjusts the coefficient of the D/A
converter for the offset (Z/C) for the
analog image data processing
Do not adjust this value. However, after
performing the memory all clear
(SP5-801), use it to re-input the previous
value.
Performs the auto scanner adjustment.
Using this SP mode after replacing the
white plate or the memory on the BICU
board. See "Replacement and Adjustment
- Standard White Level" for details on how
to do this.
Japanese version only.
Do not change the value.
4-17
SERVICE PROGRAM MODE
Settings
0: 180-line
1: 140-line
2: 95-line
0:140-line
1: 95-line
2: 70-line
0: No (Off)
1: Yes (On)
0 ~ 255
1/step
40
0 ~ 255
1/step
30
0 ~ 255
1/step
147
0 ~ 255
1/step
180
0: Normal
operation
1: Start the
adjustment
(A193)