Aiwa VX-G143K Service Manual page 28

2-11: VERTICAL POSITION
NOTE: Adjust after performing adjustments in section 2-10.
1. Receive the center cross signal from the Pattern
Generator.
2. Using the remote control, set the brightness and
contrast to normal position.
3. Activate the adjustment mode display of Fig. 1-1 and
press the channel button (1) on the remote control to
select "H/V". The Fig. 2-4 appears on the display.
4. Press the channel button (4) on the remote control to
select "V. POSI 50/60".
5. Press the PLAY or STOP button on the remote control
until the horizontal line becomes fit to the notch of the
shadow mask.
6. Receive the center cross signal of NTSC. (Audio Video
Input)
7. Press the AV button on the remote control to set to the
AV mode. Then perform the above adjustments 2~5.
2-12: OSD HORIZONTAL
1. Using the remote control, set the brightness and
contrast to normal position.
2. Activate the adjustment mode display of Fig. 1-1 and
press the channel button (5) on the remote control to
select "OTHERS". The Fig. 2-2 appears on the display.
3. Press the channel button (4) on the remote control to
select "OSD H".
4. Press the PLAY or STOP button on the remote control
until the difference of A and B becomes minimum.
(Refer to Fig. 2-5)
OSD H
A
2-13: SUB BRIGHTNESS
1. Receive more than 8 steps monochrome pattern (80dB).
(RF Input)
2. Using the remote control, set the brightness and
contrast to normal position.
3. Activate the adjustment mode display of Fig. 1-1 and
press the channel button (4) on the remote control to
select "PICTURE". The Fig. 2-6 appears on the display.
4. Press the channel button (1) on the remote control to
select "BRIGHT".
5. Press the PLAY or STOP button on the remote control
until the second scale from left end is starting to glitter.
(Refer to Fig. 2-7)
6. Receive more than 8 steps monochrome pattern. (Audio
Video Input)
7. Press the AV button on the remote control to set to the
AV mode. Then perform the above adjustments 2~5.
ELECTRICAL ADJUSTMENTS
[ TV ]
B
Fig. 2-5
1. BRIGHT
2. CONTRAST
3. COLOR
4. TINT
5. SHARPNESS
6. OSD CONT
7.
8.
"The adjustment item 4 is not used for this model."
No brilliance on the left end scale.
The next scale have a slight brilliance.
2-14: SUB COLOR
1. Receive the color bar pattern. (RF Input)
2. Using the remote control, set the brightness, contrast
and color to normal position.
3. Connect the synchro scope to TP801.
4. Activate the adjustment mode display of Fig. 1-1 and
press the channel button (4) on the remote control to
select "PICTURE". The Fig. 2-6 appears on the display.
5. Press the channel button (3) on the remote control to
select "COLOR".
6. Adjust the VOLTS RANGE VARIABLE knob of the
oscilloscope until the range between white 100% and
0% is set to 4 scales on the screen of the oscilloscope.
7. Press the PLAY or STOP button on the remote control
until the red color level is adjusted to 95% of the white
level. (Refer to Fig. 2-8)
8. Receive the color bar pattern. (Audio Video Input)
9. Press the AV button on the remote control to set to the
AV mode. Then perform the above adjustments 2~7.
D2-3
0. RETURN
White 0%
0%
95%
Red Level
White 100%
Fig. 2-6
Fig. 2-7
Fig. 2-8