JVC TH-C90A Service Manual page 51

Video section
LVA10635-A1 (3/3)
MAIN PWB
A5V
R4191
DGND
V
V
Y1
Y1
C
C
Y2
CB
CR
VCR_S/C
VCR_S/C
V_SW
V_SW
V_MUTE1
V_MUTE1
V_MUTE2
V_MUTE2
V_YCMIX
V_YCMIX
V_RGB
V_RGB
V_LPF
V_LPF
* PARTS LIST
C40/C50/C60
OTHER
JC
R4201 620 47
V
R4202 300 220
R4211 620 47
Y
R4212 300 220
R4221 620 47
C
R4222 330 220
R4231 510 47
Y2
R4232 330 220
R4241 510 62
CB
R4242 330 100
R4251 510 62
CR
R4252 330 100
0
C4191
VIDEO SW
47/25
IC411 MM1233XF-X
C4173
H L
2.7V CIN2 CIN1 2.7V
1/6.3
0V CTLa GND 0V
COUT CVIN2
2.0V 1.5V
H
0V GND VCC 4.9V
L C4192
0.01
0.7V CVOUT CTLb 0V
C4172
YOUT CVIN1
1.0V 1.4V
1/6.3
0V CTLc GND 0V
C4171
1.7V YIN1 YIN2 1.5V
1/6.3 L H
L4391
QQL25CK-221Z
220
C4391
470/10
VIDEO DRIVER
IC431 MM1623XF-X
C4394
C4392
0.1/16
0.1/16
VCC VCC
4.7V
4.7V
C4311
C IN S-DC OUT
2.3V
0.01/50
V_MUTE1 MUTE1 SW C OUT
4.9V
2.3V
C4301
CV IN S1
1.1V
0V
1/6.3
L H
V_YCMIX YC MIX SW S2
0V
0V
C4321
Y1 IN CV OUT
1.4V
1.7V
1/6.3
GND GND
0V
0V
C4395
BIAS Y1 OUT
2.3V 470/10
1.7V
C4431
22/50
V_LPF LPF SW Y2 OUT
4.9V
1.8V
C4331
Y2 IN GND
1.4V
0V
1/6.3 C4441
V_RGB RGB SW Cb OUT
0V
2.3V
470/10
C4341
Cb IN GND
2.5V
0V
1/6.3 C4451
V_MUTE2 MUTE2 SW Cr OUT
2.3V
2.3V
470/10
C4351
Cr IN GND
2.3V
0V
1/6.3
J4402
QNN0572-001
R4451
5
Pr
75
6
R4441
3
VIDEO OUT
Pb
(COMPONENT)
75
4
R4431
1
Y
75
2
J4401
470/10
QNN0570-001
C4421 75
R4421
6 5
C4411
R4411
0.01 C Y
75
4 3
2 1
VIDEO OUT
(S-VIDEO/
COMPOSITE)
C4401
470/10 75
R4401
7
V
8
17
C4121
1/6.3
14 NC 13
C4111
0.01 C Y
12 11
10 9
VCR IN
(S-VIDEO
COMPOSITE)
C4101
1/6.3
15
V
16
2-5