Panasonic TH-P50V20A Service Manual page 52

12.12. A-Board (8/22) Schematic Diagram
A-BOARD (8/22)
!
TO Sheet TUNER
R2101
3.3k
TO 13/22 SIF
R2102
4.7k
TO Sheet AVSW
AV_L
TO 12/22
AV_R
PA_LO1_L
PA_LO1_R
TO 8,10,20/22
PA_LO2_L
PA_LO2_R
HP_LOUT
TO 10/22
HP_ROUT
to HeadPhone out L, R
64 65
TO Sheet Peaks-COMMON
SUB5V TO 6/22
R2121 R2135
680 1k C2107
10V
R2139 R2107
1u
Q2109 220 0
PA_SIFINP
DSA200100L
R2103
22 R2110
22
C2104
50V
10p
C2110 C2108
R2104
16V Q2101 10V
1.2k
0.1u 1u
DSA200100L
PA_SIFINN
C2055 R2053 140k
PA_LIN1_LP
10V 10u
1%
C2057 R2055 140k
PA_LIN1_RP
10u
10V 1%
<< Monitor L
PA_LO1_L
<< Monitor R
PA_LO1_R
C2067 C2068
16V 16V
0.01u 0.01u
<< TV L
PA_LO2_L
<< TV R
PA_LO2_R
C2069 C2070
16V
16V
0.01u 0.01u
R2065 >> MainHP L
C2071
PA_HP1_L1
6.3V 100u S
>> MainHP R
R2066
C2072
PA_HP1_R1
S
6.3V 100u
C2074 C2073
R2069
R2070 25V 25V
10k 10k
0.033u 0.033u
ACHIP3.3V
Q2253
B1AAFB000002
R2260
R2264
10k
100
PA_HP_MUTE
R2258
100 R2254 R2263
DSA200100L
100 10k
MUTE
Q2255
Q2254
DSC2001S0L
B1AAFB000002
R2259
100
TO Sheet Analog-ASIC
HP_MUTE_
TO 10,14/22
66 67
TP2008 SUB3.3V
Q2301
R2308
DSA200100L
To SOS 220
sLD-STMSBT0 SG-SOUND_SOS
OPERATE SOS R2310
C2301
R2307
2.2k
16V 4.7k
0.1u
R2309
D2014
2.2k
B0ACCJ000048
C2302
16V
0.1u
TO 20/22
AUDIO AMP
IC2301
SUB3.3V
C1AB00003230
OPERATE
R2301
RESET
10k
1 STBY
PD_MUTEB
TO 20/22
2
MUTE
PD_NSHUTDOWN
PWM_READY
R2306 3 SOS
MUTE
47k
4
NC1
5 NC2
6
NC3
7 NC4
PWM_SQ_L+
8 PWM_A1
PWM_SQ_L- 9
PWM_B1
R2302
EXB28V220JX
10 NC5
22
PD_APWMSLP 11 NC6
PD_APWMSLN
TO 20/22
12 NC7
PD_APWMSRP
PD_APWMSRN 13 GND
PWM_SQ_R+ 14 PWM_B2
PWM_SQ_R- 15 PWM_A2
16 NC8
17 NC9
18 NC10
19 NC11
20 NC12
21 NC13
TO 20/22
22 NC14
MON_L-OUT
MON_R-OUT
TO 8,10,20/22
TV_L-OUT
TV_R-OUT
TO 20/22
NORMAL
MUTE
OPERATE AMP_MUTE
TO 14/22
68 69
52
S_15V
L2302
G1C3R0ZA0156
C2307
C2308 C2306 C2305 C2304 C2303
25V 25V 25V 50V 25V 25V
1u 1u 1000p
1u 1u 10u
L2301
J0JHC0000045
44
PVD1
C2313 C2314 C2315
43 C2311 R2318
50V 25V 25V 25V 3.3
PVD1
1000p 1u 10u 10u
42
OUT_CH1_P L2303 C2335
C2340 C2349
G1C220MA0416
41 25V 50V 50V
0.1u 0.022u 1000p
OUT_CH1_P
40 C2316
C2341
BOOT_CH1_P 0.1u
50V 50V
39 0.022u
C2334
VDDA1
50V
C2317
38 C2318 0.47u
C2342
BOOT_CH1_N 25V
50V 0.1u 50V
1u
0.022u
37
OUT_CH1_N L2304
G1C220MA0416 C2343 C2351
36
50V 50V
OUT_CH1_N
0.022u 1000p
C2336
35
25V
PGND1 TP2301
0.1u R2319
34
3.3
PGND1 TP2302
33
PGND2 TP2303
32
TP2304
PGND2 L2305 C2353
R2320
G1C220MA0416 50V
31 3.3
OUT_CH2_N 1000p
30
C2338 C2344
OUT_CH2_N
25V 50V
29 C2321 0.1u 0.022u
BOOT_CH2_N
50V 0.1u
28 C2337 C2345
50V 50V
VDDA2
0.47u 0.022u
C2320
27 C2323
25V
BOOT_CH2_P
50V 0.1u
1u
26 C2355
C2346
OUT_CH2_P L2306
50V 50V
G1C220MA0416
25 0.022u 1000p
OUT_CH2_P
C2339
25V C2347
24
0.1u 50V
PVD2
0.022u
23
PVD2
R2321
C2325 C2324 C2322 C2319
3.3
50V 25V 25V 25V
1000p 10u 10u
1u
70 71
TO SPEAKER
A11
1
L+
2
L-
3
R+
4
R-
72