Symphonic LCD-B20A6, Service Manual

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1-1 L4531SP
SPECIFICATIONS
<TUNER>
ANT. Input ------------------- 80 dBµV, Video: PAL 87.5%, Audio: 30 kHz dev (1 kHz Sin)
Test Input Signal----------- 400Hz 30% modulation
<LCD PANEL>
<VIDEO>
<AUDIO>
All items are measured across 8
Ω
load at speaker output terminal with L.P.F.
Note:
Nominal specifications represent the design specifications. All units should be able to approximate these. Some
will exceed and some may drop slightly below these specifications. Limit specifications represent the absolute
worst condition that still might be considered acceptable. In no case should a unit fail to meet limit specifications.
Description Condition Unit Nominal Limit
1. Intermediate Freq. Picture
PAL-BG/I/DK
Sound
PAL-BG
PAL-I
PAL-DK
MHz
MHz
MHz
MHz
38.9
33.4
32.9
32.4
-
-
-
-
2. Video S/N (White 50%) CH-3 dB 45 40
3. Audio S/N
(Output Level 500mV)
– dB 53 47
Description Condition Unit Nominal Limit
1. Number of Pixels Horizontal
Vertical
pixels
pixels 640 x 3
480
-
-
2. Brightness
cd/m
2 420 -
3. Response Time - msec 16 -
4. Support Color - - 16mil.(8bit) -
5. Viewing Angle Horizontal
Vertical
°
°
-85 to 85
-85 to 70 -
Description Condition Unit Nominal Limit
1. Over Scan Horizontal
Vertical
%
% 8.5
6.5 10±5
10±5
2. Color Temperature -
x
y
°K 8500
0.29
0.30
-
0.29±0.03
0.30±0.03
3. Resolution Horizontal
Vertical
line
line 400
350 <250
<300
Description Condition Unit Nominal Limit
1. Audio Output Power 10% THD: Lch/Rch W 0.95/0.95 0.75/0.75
2. Audio Distortion 500mW: Lch/Rch % 0.6/0.6 <4
3. Audio Freq. Response -6dB: Lch
-6dB: Rch
Hz
Hz 50 to 12K
50 to 12K -
-
4. Audio S/N VIDEO 1
VIDEO 2 dB
dB 43
55 40
40