Panasonic TH-42PX20U-P Service Manual page 225

14.20. H-Board (2 of 2) Schematic Diagram
H-BOARD TNPA2817(2/2)
!
1
2
3
4
5
6
7
8
9
IC4201
M5243AFP09-600D
EQUALIZER
IC4202
TC74HC4066AF(EL)
SWITCH
IC4203
NJW1147AM-TE1
BBE VIVA
10
TH-42PX20U-P
H-BOARD (2 of 2) Schematic Diagram
10
R4381 R4382
680 680
C4369
0.01[ZF]
R4380
68
1%
Q4303
2SB1218A0L
C4204
0.01 C4208
1
IN1-1
0.015
2
C4205 NF1-1
0.022 C4209
3
IN2-1
0.022
4
C4206
NF2-1
C4201
0.1
C4210
5
16V IN3-1
0.068[KB]
10
6
NF3-1
R4202 R4209
NP
7
91K 2200
PFBIN-1
8
R4201 NFBIN-1
R4203 R4210 R4219
4700
470 4700 9
91K OUT1
10
C4207 GND
R4204 R4211
1000P
2200 91K
9V
1
EQ_L
1
2
3
THROUGH_L
4 2
R4214
5
10K
EQ_R
6
R4207
3300 7
THROUGH_R
R4208
Q4201
47K
SWITCH
2SD1819A0L
C4211 1
1
INa
C4212 3300p
2
BBE1a
C4213
3
BBE2a
16V 0.033
4
BBEOUTa
5
TONEINa
6
C4214 25V 4R7 TONE-Ha
7
C4215 0.1
TONE-La
8
OUTa
9
C4216 1 AGC
10
C4217 0.1 SS-FIL
11
1 CVB
C4218
12
C4219 1
CVA
13
SDA
SDA2
R4217 100
14
SCL
SCL2
R4218 100
15
GND
C4220
0.01[ZF] GND
IC4204
8
VCC
BA15218F-E2
7
R4212
R4220
VAO
10K 6
18K
5
NP
C4202 R4215
16V 3300
R4221
GND
10 4700
R4213
10K
C4221
16V
10
R4206 C4203 C4222 R4223
1K 1K
1[ZF] 1[ZF]
10V 10V
R4205 R4216 Q4202
10K 47K
2SD1819A0L
R4222
1K
VAO MUTE
11
30V
9V
R4383
680
INPUT SELECT
S1
R4384
470
C1
R1
Y1
L1
V1
GND
C4236
C4246
0.015 0.01
20
IN1-2
C4237
19
NF1-2 C4247
0.022
0.022
18
IN2-2
C4238
17
NF2-2 C4248
0.068[KB] C4249
0.1
16
IN3-2
16V
16V
15 10
NF3-2
R4234 R4241
NP
14
2200 91K
PFBIN-2
13
NFBIN-2
C4243 R4245
R4230 R4235 R4242
12 1000P 91K 470 4700
OUT2 4700
11
VCC
R4236 R4243
C4225 C4239
2200
91K
10V 10V
1[ZF] 100/16V
R4233
10K
L4201
10
C4240
C4242
Q4204
10V 10V
14
1[ZF] 100/16V 2SD1819A0L
SWITCH
13
12
11 R4240
3300
4
10
AUX0 AUX1
R4238 Lo
9
47K
Lo
3
8 Hi
Hi
BBE_L
C4227
1 BBE_R
30
INb
C4228
29
BBE1b
3300p
28
C4229
BBE2b
0.033
27
BBEOUTb
26
TONEINb
25
TONE-Hb C4230 25V 4.7
+
24 R4244
0.1
TONE-Lb C4231
680
23
OUTb
9V
22 Q4205
SR-FIL C4232 0.1
21
2SD1819A0L
VREFF C4233 1
20
CTH C4234 1 R4247
R AMP
19
CTL C4235 1
18
AUX0
R4246
17
AUX1
680
16
Vcc
C4241
C4226
Q4206
10V
0.01
100/16V
2SD1819A0L
L AMP
1
R4226
18K
2 R4231
R4228
10K
3300
3
NP
C4244
4 R4227
GND 16V
4700
10
R4232
10K
C4223
16V
10
R4225 C4224 C4245 R4239
1K 1 1 1K
Q4203
R4224 R4229
10K 47K
2SD1819A0L
R4237
1K
VAO MUTE
12
NTSC2
C4370
IC4301
16V 1
CXA2079Q
32
31
30
V1IN=AV4
V2IN=AV3
29
NC
V3IN=AV2
R4305 220
28
S-4 V4IN=AV1
NC
V5IN=TV1
27 NC
S2-4
TV =TV2
ADR
C4301 1 R4306 220
26
C4
C4302 1 R4307 220
25 S2-3
RV4
S-3
C4303 1 R4308 220
24 V4
Y4
C4304 1 R4309 220
23
LV4
C4305 1 R4310 220
22
21
20
S2
C4306 1
C2
C4307 1
R2
C4308 1
Y2
C4309 1
L2
C4310 1
V2
Lo PROHIBIT
Hi
GEQ ON
Lo
Through
Hi
PROHIBIT
AUDIO_R
1K
AUDIO_L
GND
R4248
1K
VAO_MUTE
13
C4315
C4312
16V
0.01
47/16V
C4317
16V 47/16V R4330
C4316
16V 1 82
+
NTSC_L
52
53
NTSC_R
54
55
TRAP1 R4331
82 N
56
YOUT1
R4332
57
ROUT1
VGND
VOUT1 82
58
LOUT1 COUT1
R4333
RTV 59 2
LV5
TV
R4334 2
LTV 60
V5
R4335 2
61
RV5
62
63 R4336 220
64
C4318
16V
1
C4319 1
C4320 16V
C4321 1
C4322 1
R4401
75 1%
R4402
75 1%
SD Y/C
14
82