Sharp LC-20A2E Service Manual page 3

Sharp lcd colour television service manual
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LC-20A2E
RF
AV1/
AV2
AVS
AGC gain start
3-1. +B adjustment
Page 9 of MAIN side adjustment process +B-ADJ
Adjust the voltage of the pin 12 of SC901 the SUB PWB to 5.0V±0.05V.
3-2. Model setting
Page 9 of MAIN side adjustment process MODEL
Set to A2E.
3-3. Inch size setting
Page 9 of MAIN side adjustment process INCH SIZE
Set to 20.
3-4. COMMON BIAS adjustment of LCD module
Page 9 of MAIN side adjustment process COM BIAS
Input the picture of gray scale and adjust it so as to obtain the best contrast.
3-5. CUTOFF adjustment
Page 9 of MAIN side adjustment process R CUTOFF, B CUTOFF
Adjust it so as to obtain the optimal colour balance.
PAL/PAL60
y delay
7
tint offset
0
sub contrast
2
sub colour
25
y delay
7
tint offset
1
sub contrast
0
sub colour
30
y delay
7
tint offset
1
sub contrast
0
sub colour
30
SECAM
NTSC
6
0
0
0
2
0
25
0
5
4
1
1
2
0
30
20
5
1
1
1
0
0
30
30
27
10

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