White Balance Adjustment; Cut Off Adjustment - Aiwa TV-AN2110 Service Manual

1-4. OSD POS OSD Positioning Adjustment / Adjustment Menu Screen :
PAGE 1-4
Input signal : Not specified
• Using the volume keys on the jig remote controller, adjust + marks on both
side to be an equal distance from the edge of the screen. A=B (Fig. 1-4)
1-5. PIF VCO VIDEO IF • VCO Adjustment / Adjustment Menu
Screen : PAGE 1-5
Input signal : ANT RF - INPUT
Color bar
Measuring instrument : Pattern generator / Leader : LCG-404
• Using the volume keys on the jig remote controller, adjust AFT
status on the screen to "OK". (Fig. 1-5)
• If there is more than one area to adjust, select the average
figure.
* "NG" will be indicated for SD when no screen signal was sent.
It will not be any problem for VCO adjustment. (eg. Video
input environment with receiving no signal.)
Even in this case, adjustment is possible if there is a load on
ANT.
1-6. RF AGC RF - AGC / Adjustment Menu Screen : PAGE 1-6
Input signal : ANT RF - INPUT
Color bar
Test point : TP-101 RF - AGC (TU101-PIN1)
Measuring instrument : Oscilloscope
1. Connect oscilloscope to TP101
2. Using the volume keys on the jig remote controller, adjust the test point
voltage becomes to 3.5±0.3V. And at the same time, confirm AFT status
changes to "OK" as shown in the Fig. 1-6.

2. White Balance Adjustment :

Input signal
Contents of the adjustment : 1. R CUT OFF
Measuring instrument : Pattern generator / Leader : LCG-404

Cut Off Adjustment :

2-1. Input white raster signal by using pattern generator.
2-2. Fix the cut off figure for the brightest color on the screen at 127 and adjust the
other 2 cut off figures for a white picture by using the volume keys on the jig
remote controller.
Pattern generator / Leader : LCG-404
Adjustment Menu Screen : PAGE 2-1 ~ 5
: White raster
2. G CUT OFF
3. B CUT OFF
4. G DRIVE * More than 20 minutes of aging
is required before adjusting.
5. B DRIVE * Whole adjustment process should
be repeated for several times.
PAGE 1
A
PAGE 1
SD
AFT
6 RF AGC
* User's picture quality will be cleared when
the adjustment menu screen appears.
– 14 –
OSD POS
*
B
Fig.1-4
OK
OK
32
Fig.1-6