Toshiba 14N21ES Panduan Servis - Halaman 16
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2-13: COLOR CENT
1.
Receive the PAL color bar pattern. (RF Input)
2.
Using the remote control, set the brightness, contrast
and color to normal position.
3.
Connect the oscilloscope to TP022.
4.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (25) on the remote control to
select "COLOR CENT".
5.
Adjust the VOLTS RANGE VARIABLE knob of the
oscilloscope until the range between white 100% and
0% is set to 5 scales on the screen of the oscilloscope.
6.
Press the VOL. +/- button on the remote control until
the red color level is adjusted to 100 ± 10% of the
white level. (Refer to Fig. 2-1)
7.
Receive the PAL color bar pattern. (Audio Video Input)
8.
Set to the AV mode. Then perform the above
adjustments 2~6.
2-14: TINT
1.
Receive the NTSC color bar pattern. (Audio Video Input)
2.
Using the remote control, set the brightness and contrast
to normal position.
3.
Connect the oscilloscope to TP023.
4.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (20) on the remote control to
select "TINT".
5.
Press the VOL. +/- button on the remote control until the
section "A" becomes a straight line. (Refer to Fig. 2-2)
"A"
ELECTRICAL ADJUSTMENTS
100%
Fig. 2-1
Fig. 2-2
D-3
2-15: 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
AGC GAIN
04
R CUTOFF
06
G CUTOFF
07
B DRIVE
09
V POSI (50)
10
V POSI (60)
18
BRIGHT MAX
19
BRIGHT MIN
20
TINT
21
SHARP
23
CONTRAST MAX
24
CONTRAST MIN
26
COLOR MAX
27
COLOR MIN
30
M B CUT OFF
31
CVBS OUT
32
APR THRESHOLD
33
BELL FILTER
34
BANDPASS
35
H POSI OSD
36
V POSI OSD
37
H POSI TEXT
38
V POSI TEXT
* To check for the fixed values of the RF (60Hz), indicate
the adjustment mode screen while input the 60Hz video
signal.
RF
AV
00
---
00
---
00
---
45
---
03
---
00
---
30
30
10
10
30
ADJ.
05
07
45
45
10
10
50
50
10
10
127
---
31
---
00
---
00
---
00
---
135
---
57
---
130
---
57
---