Aiwa VX-D1420K Service Manual page 28

Basic tape mechanism : ovd-6s
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1. H.POSI 50/60
2.
3. V.SIZE 50/60
4. V.POSI 50/60
5. V.LIN 50/60
6. V.SC 50/60
7.
8. (H. FREQ)
"The adjustment item 8 is not used for this model."
2-9: VERTICAL SIZE
NOTE: Adjust after performing adjustments in section 2-8.
1.
Receive the cross hatch 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 (3) on the remote control to
select "V. SIZE 50/60".
5.
Press the PLAY or STOP button on the remote control
until the rectangle on the center of the screen becomes
square.
6.
Receive a broadcast and check if the picture is normal.
7.
Receive the cross hatch signal of NTSC. (Audio Video
Input)
8.
Press the AV button on the remote control to set to the
AV mode. Then perform the above adjustments 2~5.
2-10: VERTICAL LINEARITY 50
NOTE: Adjust after performing adjustments in section 2-9.
1.
Receive the cross hatch 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 (5) on the remote control to
select "V. LIN 50/60".
5.
Press the PLAY or STOP button on the remote control
until the SHIFT quantity of the OVER SCAN on upside
and downside becomes minimum.
6.
Receive the cross hatch 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.
ELECTRICAL ADJUSTMENTS
0. RETURN
Fig. 2-4
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 contrast step No. becomes "0"
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.
Activate the adjustment mode display of Fig. 1-1 and
2.
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)
A
2-13: SUB BRIGHTNESS
1.
Receive more than 8 steps monochrome pattern. (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.
D2-3
[ TV ]
OSD H
B
Fig. 2-5

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