Aiwa TV-CN143 Service Manual page 14

1-4. OSD POS OSD Positioning / Adjustment Menu Screen : PAGE 1-4
Input signal : Not specified
• Adjust + mark positions on both left and right in the equal distance towards
the screen edge. A = B (Fig. 1-4)
1-5. PIF VCO Video IF/VCO Adjustment / Adjustment Menu Screen : PAGE 1-5
Input signal : ANT RF-INPUT
• Use the volume keys on the jig remote controller to adjust AFT until "OK"
status is indicated on the screen. (Fig. 1-5)
• If there is more than one range to adjust, select the average figures.
* "NG" will be appeared for SD when no signal is sent to the screen.
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
Test point : TP-101 RF AGC (TU101-1 pin).
Measuring instrument: Oscilloscope
1. Connect oscilloscope to TP-101.
2. Using the volume keys on the jig remote controller, adjust the test point
voltage becomes to 3.5V±0.3V.
Confirm AFT status changes to "OK" as shown in the Fig. 1-6 at the
same time.
PAGE 2
White Balance Adjustment : Adjustment Menu Screen : PAGE 2-1 ~ 5.
*User's picture quality will be cleared when the adjustment menu screen appears.
Input signal
Contents of the adjustment : 1. R CUT OFF
Measuring instrument : Pattern generator
: White raster
2. G CUT OFF
3. B CUT OFF
4. G DRIVE * More than 20 minutes of
5. B DRIVE aging is required before
adjusting.
* The Whole process should
be repeated several times
for the adjustment.
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