Toshiba MD20FP3 Service Manual page 29

2-14: COLOR CENTER
1. Receive the color bar pattern. (RF Input)
2. Using the remote control, set the brightness, contrast,
color and tint to normal position.
3. Connect the oscilloscope to TP024.
4. Activate the adjustment mode display of Fig. 1-1 and
press the channel button (24) on the remote control to
select "COLC".
5. 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.
6. Press the VOL. UP/DOWN button on the remote control
until the red color level is adjusted to 100 ± 5% of the
white level. (Refer to Fig. 2-3)
7. Receive the color bar pattern. (Audio Video Input)
8. Press the INPUT SELECT button on the remote control
to set to the AV mode.
9. Using the remote control, set the brightness, contrast,
color and tint to normal position.
10. Activate the adjustment mode display of Fig. 1-1 and
press the channel button (36) on the remote control to
select "COLCA".
11. 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.
12. Press the VOL. UP/DOWN button on the remote control
until the red color level is adjusted to 100 ± 5% of the
white level. (Refer to Fig. 2-3)
13. Press the TV/DVD button on the remote control to set to
the DVD mode.
14. Activate the adjustment mode display of Fig. 1-1 and
press the channel button (48) on the remote control to
select "COLCD".
15. Press the VOL. UP/DOWN button on the remote control
to decrease the step numbers by 8 steps to the AV.
White 0%
White 100%
ELECTRICAL ADJUSTMENTS
100%
Red Level
Fig. 2-3
2-15: CONTRAST MAX
1. Activate the adjustment mode display of Fig. 1-1 and
press the channel button (22) on the remote control to
select "CNTX".
2. Press the VOL. UP/DOWN button on the remote control
until the contrast step No. becomes "51"
3. Receive a broadcast and check if the picture is normal.
4. Press the INPUT SELECT button on the remote control
to set to the AV mode.
5. Activate the adjustment mode display of Fig. 1-1 and
press the channel button (34) on the remote control to
select "CNTXA".
6. Press the VOL. UP/DOWN button on the remote control
until the contrast step No. becomes "58"
7. Receive a broadcast and check if the picture is normal.
8. Press the TV/DVD button on the remote control to set to
the DVD mode.
9. Activate the adjustment mode display of Fig. 1-1 and
press the channel button (46) on the remote control to
select "CNTXD".
10. Press the VOL. UP/DOWN button on the remote control
to set the same step numbers as the AV.
11. Press the GAME button on the remote control to set to
the GAME mode.
Activate the adjustment mode display of Fig. 1-1 and
12.
press the channel button (58) on the remote control to
select "CNTXG".
13. Press the VOL. UP/DOWN button on the remote control
to set the same step numbers as the AV.
2-16: Confirmation of Fixed Value (Step No.)
Please check if the fixed values of the each adjustment
items are set correctly referring below.
NO. FUNCTION
02 OSD CONTRAST
05 H BLK L
06 H BLK R
08 V POSITION
10 V S CORRECTION
11 V COMP
16 G DRIVE
19 BRIGHTNESS(MAX)
20 BRIGHTNESS(MIN)
21 CONTRAST(CENT.)
23 CONTRAST(MIN)
25 COLOR(MAX)
26 COLOR(MIN)
28 SHARPNESS
29 SUB BIAS
31 BRI. AV(MAX)
32 BRI. AV(MIN)
33 CONT. AV(CENT.)
35 CONT. AV(MIN)
37 COL. AV(MAX)
D-4
STEP NO NO FUNCTION
. .
03 38 COL. AV(MIN)
00 40 SHARPNESS AV
02 41 SUB BIAS
01 43 BRI. DVD(MAX)
07 44 BRI. DVD(MIN)
03 45 CONT. DVD(CENT.)
07 47 CONT. DVD(MIN)
4A 49 COL. DVD(MAX)
10 50 COL. DVD(MIN)
3A 52 SHARPNESS DVD
05 53 SUB BIAS
7F 55 BRI. GAME(MAX)
07 56 BRI. GAME(MIN)
18 57 CONT. GAME(CENT.)
50 59 CONT. GAME(MIN)
4A 60 SUB BIAS
10 61 TUNING V MUTE
3A 62 POWER ON V MUTE
05 68 H FREQ
7F
STEP NO
.
07
18
50
4A
10
3A
05
7F
07
10
50
4A
10
3A
05
50
00
40
3F