Toshiba VTD1431 Service Manual page 23

2-4: FOCUS
1. Receive a broadcast.
2. Turn the Focus Volume fully counterclockwise once.
3. Adjust the Focus Volume until picture is distinct.
2-5: HORIZONTAL POSITION
1. Receive the monoscope pattern 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 (08) on the remote control to
select "H POSI 50".
4. Press the LEFT/RIGHT button on the remote control
until the SHIFT quantity of the OVER SCAN on right
and left becomes minimum.
5. Receive the cross hatch signal of NTSC. (Audio Video
Input)
6. Press the AV button on the remote control to set to the
AV mode.
7. Activate the adjustment mode display of Fig. 1-1 and
press the channel button (39) on the remote control to
select "H POSI 60".
8. Press the LEFT/RIGHT button on the remote control
until the SHIFT quantity of the OVER SCAN on right
and left becomes minimum.
2-6: VERTICAL POSITION
NOTE: Adjust after performing adjustments in section 2-5.
1. Receive the monoscope pattern 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 (09) on the remote control to
select "V POSI (50)".
4. Check if the step No. V. POSI (50) is "10".
5. Adjust the VR402 until the horizontal line becomes fit to
the notch of the shadow mask.
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.
8. Using the remote control, set the brightness and
contrast to normal position.
9. Activate the adjustment mode display of Fig. 1-1 and
press the channel button (10) on the remote control to
select "V POSI (60)".
10. Check if the step No. V. POSI (60) is "05".
ELECTRICAL ADJUSTMENTS
D-2
2-7: VERTICAL SIZE
NOTE: Adjust after performing adjustments in section 2-6.
1. Receive the monoscope pattern 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 (11) on the remote control to
select "V SIZE 50".
4. Adjust by using the LEFT/RIGHT button on the remote
control so that the Up/Down OVER SCAN Quantity
becomes equal to the Right/Left OVER SCAN Quantity.
5. Receive a broadcast and check if the picture is normal.
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.
8. Activate the adjustment mode display of Fig. 1-1 and
press the channel button (12) on the remote control to
select "V SIZE 60".
9. Adjust by using the LEFT/RIGHT button on the remote
control so that the Up/Down OVER SCAN Quantity
becomes equal to the Right/Left OVER SCAN Quantity.
10. Receive a broadcast and check if the picture is normal.
2-8: VERTICAL LINEARITY
NOTE: Adjust after performing adjustments in section 2-7.
After the adjustment of Vertical Linearity, reconfirm
the Vertical Position and Vertical Size adjustments.
1. Receive the monoscope pattern from the Pattern
Generator.
2. Using the remote control, set the brightness and
contrast to normal position.
3. Adjust the VR401 until the SHIFT quantity of the OVER
SCAN on upside and downside becomes minimum.
2-9: 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 (35) on the remote control to
select "H POSI OSD".
3. Press the LEFT/RIGHT button on the remote control
until the difference of A and B becomes minimum.
(Refer to Fig. 2-1)
35 H POSI OSD
36 V POSI OSD
37 H POSI TEXT
38 V POSI TEXT
39 H POSI 60
00 CUT OFF
9- EXT
A
VCO Status -
129
XXX
57
125
57
42
B
Fig. 2-1