Toshiba 27A14 Service Manual page 15

2-15: TINT/COLOR CENT
1. Receive the color bar pattern.
2. Connect the oscilloscope to TP024.
3. Activate the adjustment mode display of Fig. 1-1 and
press the channel button (24) on the remote control to
select "TINT".
4. Press the VOL. UP/DOWN button on the remote control
until the section "A" becomes as straight line
(Refer to Fig. 2-2)
5. Connect the oscilloscope to TP022.
6. Activate the adjustment mode display of Fig. 1-1 and
press the channel button (22) on the remote control to
select "COL.CENT".
7. Press the VOL. UP/DOWN button on the remote control
until the red color level is adjusted to 120 ± 10% of the white
level. (Refer to Fig. 2-3)
8. Receive the color bar pattern. (Audio Video Input)
9. Press the TV/VIDEO button on the remote control to set to
the AV mode. Then perform the above adjustments 2~7.
10. Press the TV/VIDEO button on the remote control to set to
the CS mode. Then perform the above adjustments 2~7.
white 100%
2-16: CONTRAST MAX MANUAL
1. Activate the adjustment mode display of Fig. 1-1 and
press the channel button (18) on the remote control to
select "CONT. MAX".
2. Press the VOL. UP/DOWN button on the remote
control until the contrast step No. becomes "110".
3. Receive a broadcast and check if the picture is normal.
4. Press the TV/VIDEO button on the remote control to set
to the AV mode. Then perform the above adjustments
1~3.
5. Press the TV/VIDEO button on the remote control to set
to the CS mode. Then perform the above adjustments
1~3.
ELECTRICAL ADJUSTMENTS
"A"
Fig. 2-2
red 120%
Fig. 2-3
2-17: SEPARATION 1, 2
Please do the method (1) or method (2) adjustment.
Method (1)
1. Set the multi-sound signal generator for each different
L-ch and R-ch frequency (Ex. L-ch=2KHz, R-ch=400Hz)
and receive the RF.
2. Connect the oscilloscope to the Audio Out Jack.
3. Activate the adjustment mode display of Fig. 1-1 and
press the channel button (34) on the remote control to
select "SEP 1".
4. Press the VOL. UP/DOWN button on the remote control
to adjust it until the audio output wave becomes a fine
sine wave.
5. Press the CH UP button once the set to "SEP 2" mode.
Then perform the above adjustment 4.
Method (2)
1. Set the multi-sound signal generator L-ch=1KHz, R-ch
=Non input and receive the RF.
Connect the oscilloscope to the Audio Out Jack (R-ch).
2.
Press the AUDIO SELECT button on the remote control
3.
to set to the stereo mode.
Activate the adjustment mode display of Fig. 1-1 and
4.
press the channel button (34) on the remote control to
select "SEP 1".
5. Press the VOL. UP/DOWN button on the remote control
to adjust it until the R-ch output becomes minimum.
6. Set the multi-sound signal generator L-ch=Non input,
R-ch=1KHz and receive the RF.
Connect the oscilloscope to the Audio Out Jack (L-ch).
7.
8. Activate the adjustment mode display of Fig. 1-1 and
press the channel button (35) on the remote control to
select "SEP 2".
Press the VOL. UP/DOWN button on the remote control
9.
to adjust it until the L-ch output becomes minimum.
2-18: 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 H.VCO
04 AFC GAIN
05 V.SHIFT
09 VS.CORRECTION
15 BRI.MAX
17 BRI.MIN
19 CONT.CENT
20 CONT.MIN
21 COL.MAX
23 COL.MIN
25 SHARPNESS
26 CB DL
27 CR DL
28 CB PED
29 CR PED
31 CORNER
D-3
AV CS
RF
03 03 03
04 04 04
02 02 02
38 38 38
140 140
140
45 45 45
64 64 64
20 20 20
90 90
90
00 00 00
40 40 40
00 00 00
00 00 00
08 08
08
08 08 08
35 35 35