Service manual

1st 2nd 3rd Display Function
Default,
( ): For Europe
Settings/Range Comments Report
4 426 1 R_GAIN 0
Sets or displays the gain value of
the amplifiers on the scanner IPU
(for each RGB color).
111
0 to 255
Keep all these at the factory
settings.
4 426 2 G_GAIN 0 111
4 426 3 B_GAIN 0 111
4 426 4 R_GAIN 1 111
4 426 5 G_GAIN 1 111
4 426 6 B_GAIN 1 111
4 427 1 R_REF. 0
Sets or displays the reference
voltage for the A/D converters on
the scanner IPU for each RGB
color.
132
0 to 255
Keep all these at the factory
settings.
4 427 2 G_REF. 0 132
4 427 3 B_REF. 0 132
4 427 4 R_REF. 1 173
4 427 5 G_REF. 1 173
4 427 6 B_REF. 1 173
4 431 1 Trgt R_Gray Balance Sets or displays the target gray
balance value for the scanner for
each RGB color.
180
180
±
10
Keep all these at the factory
settings.
4 431 2 Trgt G_Gray Balance 180
4 431 3 Trgt B_Gray Balance 180
4 435 White Level Adj.
Performs the white level
adjustment.
- ON: Start, OFF: C/S
Do this after replacing the
exposure lamp.
4 901 1 Scan with Shading
Scans, moving the carriage one
time and using shading correction.
- ON: Start, OFF: C/S
The output signal can be
obtained from CN401 on the
scanner IPU board.
4 901 2 Scan without Shading
Scans, moving the carriage one
time and without shading
correction.
- ON: Start, OFF: C/S
4 903 Create Gamma Table Creates all printer gamma tables. 0 0 to 511
Do not change the factory
settings.
SCANNER
SM APPENDIX 11-39 A166/A187/A189
CÓPIA NÃO CONTROLADA
CÓPIA NÃO CONTROLADA