Panasonic TH-42PX80U Service Manual page 55

11.19. A-Board (10/15) Schematic Diagram
! A-BOARD TNPH0716S (10/15)
SUB5V
!
TU8300
R8336
0
ENGE6604KF
TUNER
NC
1
NC
2
NC
R8300
3
VJUMP1005-S
L-out RF_L
4 S
R-out RF_R
S
5
R8301
VJUMP1005-S
RF-AGC_Monitor
R8332
7
VJUMP1005-S
Video-out VIDEO_OUT
8 S
VB 5V_VB
9 C8301 C8302 C8310 L8301
50V 16V 6.3V J0JHC0000045
1000p 0.1u 220u
BT30V
BT_Monitor
TP8303
L8302
11
BTL BT30V J0JHC0000045
12 C8303 C8311
50V 35V
0.01u 22u
SDA R8302 47
14 C8304
SCL 50V 82p R8303 47
15 C8305
AFT-out 50V 82p R8331 0 AG_RF_AFT1
16
+B 5V_+B
C8313 C8307
17 C8312 L8303
IF_Monitor 50V 16V 6.3V
J0JHC0000045
1000p 0.1u 220u
18 R8304
IF-AGC 0
19
IFD-out1
20
IFD-out2
21
C8386
50V
R8305
1000p 100
IF_OUT_P
C8314
C8387
50V
1000p
IF_OUT_N R8306
100
TH-42PX80U
A-Board (10/15) Schematic Diagram
82 83
FrontEnd
SUB5V
R8313
1k
R8311
220
Q8300
2SB0709ASL
FE_SDA_TU
FE_SCL_TU
FA_IF_AGC
C8315 C8318 C8321
50V 50V 16V
12p 100p 0.01u
FA_FAT_P
L8304
G1CR22JA0020 C8317 C8320
50V R8335
50V 50V
27p L8305 68
27p 22p
G1CR22JA0020
FA_FAT_N
C8323 C8324
50V 50V
C8316 C8319 C8322
12p 12p
50V 16V
50V 100p
12p 0.01u
X8300 FA_FAT_P
H0J250500079
25MHz
FA_FAT_N
84 85
SUB3.3V
1
2
3
4
NC3
VDDA6 TRST
5
NC4 NC19 NC17
6 NC20 OPN11
NC5
C8330
7
16V
VDDA0
0.1u
8
VSSA0
C8325
16V 9
VSSA1
0.1u
10
VDDL0
11
VSS0
12
NC6 IC8300
C8331
13
16V
VDDA1
0.1u
14
VSSA2 MN884350
15
NC7
16
NC8
C8332
17
16V VDDA2
0.1u 18
VSSA3
19
OPN0
C8326 C8333
16V 16V 20
VDDA3
0.1u 0.1u
21
VDDL1
22
VSS1
23
VDDL2
24
FRONT END PROCESSOR
XO
25 (TERRESTRIAL RECEIVER)
XI
26
VSS2
R8314 27
12k IBADIRF
28
C8327 VSSA4
C8334
16V
16V 29
0.1u VDDA4
0.1u
30
VSSA5
C8335
31
16V VDDA5
IBADVRL NC12
0.1u
32
IBAINP NC11 FIXL3
33
IBADVRL2 FIXL2
NC9 IBFSYNC
34
35
C8337 36
16V
0.1u C8338
16V 0.1u
C8339
16V
0.1u
C8340
16V
0.1u
C8346
16V
0.01u
86 87
55
R8333
47k
SUB1.2V SUB3.3V
CH0CLK
CH0PSYNC
CH0VAL
CH0DATA
SUB3.3V
R8334
47k
XIRQ2
FE_XRST
XECS6
AD_SDA2
108
AD_SCL2
107
R8323 100 XIRQ2
106
105
NC15
C8360
104
VDDL9 16V
0.1u
103
VSS15
102
OPN9
101
OPN8
C8361
100
VDDH5 16V
99 0.1u
VSS14
R8324 47 CH0CLK
98
IBSCK
97 C8362
VDDL8 16V AG_RF_AFT1
96 0.1u
VSS13
47 CH0DATA
95 R8325
IBSDO
94 R8326 47 CH0VAL
IBDEN RF_L
R8327
93 47 CH0PSYNC
IBPCK
92 C8363
VDDH4 16V
91 0.1u
VSS12 RF_R
90
OPN7
89
OPN6
88 C8364
VDDH3 16V RF_V
87 0.1u
VSS11
86
OPN5
85
OPN4
C8365
84
VDDL7 16V
0.1u
83
VSS10
82
OPN3
81
OPN2
C8366
80
VDDH2 16V
79 0.1u
VSS9
78
OPN1
77
IBERR
SUB3.3V
76
C8367
75
16V
0.1u
74
73
C8372
C8376 C8381
10V
16V 16V
10u
0.01u 0.1u
SUB5V
C8374 C8377 C8378 C8379
10V 16V 16V 16V
10u 0.1u 0.01u 0.1u
TH-42PX80U
A-Board (10/15) Schematic Diagram
88 89
CH0CLK
CH0PSYNC to (1/15)
LiteII
CH0VAL
CH0DATA
to (1/15)
XIRQ2
to (1/15)
XECS6
AD_SDA2
to (3/15)(5/15)(13/15)
AD_SCL2
to (7/15)
AG_RF_AFT1
TP8300
RF_L
TP8301
to (5/15)
RF_R
TP8302
RF_V
SUB1.2V
C8382
C8373 C8375
16V
16V 10V
0.01u
0.1u 10u
BT30V
C8370 C8371 C8380
50V 50V 50V
1000p 0.1u 0.01u
90