Toshiba MD20Q42 Service Manual page 29

2-4: WHITE BALANCE
NOTE: Adjust after performing CUT OFF adjustment.
1. Place the set in Aging Test for more than 15 minutes.
2. Receive the gray scale pattern from the Pattern
Generator.
3. Using the remote control, set the brightness and
contrast to normal position.
4.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (07) on the remote control to
select "R DRIVE".
5. Press the CH. UP/DOWN button on the remote control
to select the "B DRIVE", "R CUT OFF", "G CUT OFF" or
"B CUT OFF".
6. Adjust the VOL. UP/DOWN button on the remote control
to whiten the B DRIVE, R CUT OFF, G CUT OFF and B
CUT OFF at each step tone sections equally.
7. Perform the above adjustments 5 and 6 until the white
achieved.
2-5: HORIZONTAL POSITION
1. Receive the monoscope pattern.
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 (04) on the remote control to
select "HPOSI".
4. Press the RIGHT/LEFT button on the remote control
until the SHIFT quantity of the OVER SCAN on right and
left becomes minimum.
2-6: VERTICAL POSITION
1. Receive the monoscope pattern.
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 (06) on the remote control to
select "VPOSI".
4. Check if the step No. V POSI is "02".
5. Adjust the VR402 until the horizontal line becomes fit
to notch of the shadow mask. (Refer to Fig. 2-1)
ELECTRICAL ADJUSTMENTS
horizontal line
Notch
Shadow mask
Fig. 2-1
2-7: VERTICAL SIZE
1. Receive the monoscope pattern.
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 (05) on the remote control to
select "VSIZE".
4. Press the RIGHT/LEFT button on the remote control
until the SHIFT quantity of the OVER SCAN on upside
and downside becomes 10
5. Receive a broadcast and check if the picture is normal.
2-8: BRIGHT CENTER
1. Receive the monoscope 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 (12) on the remote control to
select "BRTC".
4. Press the RIGHT/LEFT button on the remote control
until the white 0% is begin to shine.
5. Receive the monoscope pattern. (Audio Video Input)
6.
Press the INPUT button on the remote control to set to
the AV mode.
7. Using the remote control, set the brightness and
contrast to normal position.
8.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (23) on the remote control to
select "BRTCA".
9. Press the RIGHT/LEFT button on the remote control
until the white 0% is begin to shine.
10. Press the TV/DVD button on the remote control to set
to the DVD mode.
11.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (34) on the remote control to
select "BRTCD".
12.
Press the RIGHT/LEFT button on the remote control to
set the same step numbers as the AV.
13.
Press the INPUT button on the remote control to set to
the GAME mode.
14. Activate the adjustment mode display of Fig. 1-1 and
press the channel button (45) on the remote control to
select "BRTCG".
15. Press the RIGHT/LEFT button on the remote control to
set the same the same step numbers as the AV.
D-2
2%.