Toshiba MD20Q41 Service Manual page 37

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 TP022.
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 RIGHT/LEFT button on the remote control until
the red color level is adjusted to 100
level. (Refer to Fig. 2-4)
7. Receive the color bar pattern. (Audio Video Input)
8. Press the INPUT 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 RIGHT/LEFT button on the remote control until
the red color level is adjusted to 100
level. (Refer to Fig. 2-4)
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 RIGHT/LEFT button on the remote control to
set increase the step numbers by 7 steps to the AV.
White 100%
ELECTRICAL ADJUSTMENTS
5% of the white
5% of the white
White 0%
100%
Red Level
Fig. 2-4
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 RIGHT/LEFT button on the remote control until
the contrast step No. becomes "61"
3. Receive a broadcast and check if the picture is normal.
4. Press the INPUT 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".
Press the RIGHT/LEFT button on the remote control until
6.
the contrast step No. becomes "60"
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.
Activate the adjustment mode display of Fig. 1-1 and
9.
press the channel button (46) on the remote control to
select "CNTXD".
10. Press the RIGHT/LEFT 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.
12. Activate the adjustment mode display of Fig. 1-1 and
press the channel button (58) on the remote control to
select "CNTXG".
13. Press the RIGHT/LEFT 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 STEP NO
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)
38 COL. AV(MIN)
40 SHARPNESS AV
41 SUB BIAS
43 BRI. DVD(MAX)
D-4
NO FUNCTION
. .
02 44 BRI. DVD(MIN)
04 45 CONT. DVD(CENT.)
02 47 CONT. DVD(MIN)
00 49 COL. DVD(MAX)
0e 50 COL. DVD(MIN)
03 52 SHARPNESS DVD
07 53 SUB BIAS
40 55 BRI. GAME(MAX)
10 56 BRI. GAME(MIN)
30 57 CONT. GAME(CENT.)
05 59 CONT. GAME(MIN)
7F 60 SUB BIAS
10 61 TUNING V MUTE
1A 62 POWER ON V MUTE
00 68 H. FREQ
40 69 EAST/WEST DC
10 70 EAST/WEST AMP
30 71 EAST/WEST TILT
05 72 EAST/WEST COR. TOP
7F 73 EAST/WEST COR. BOT
10 74 H. SIZE COMP
15 75 H. BLK L AV
00 76 H. BLK R AV
40
MD20Q41/MD20Q41C
STEP NO
.
10
30
05
7F
10
15
00
40
10
30
05
00
00
40
3F
00
00
00
00
00
00
07
05