14.6. PA-Board Block Diagram
1
3
AVR 9V
IC2304
IC7505
1
2
AVR 2.5V
IC7503
1
2
AVR 5V
IC7502
1
2
AVR 9.2V
IC7504
1
2
AVR 3.3V
12V
9V
Q7501
MAIN 9V
SUB 9V2
SUB 5V
MAIN 3.3V
MAIN 2.5V
12V
9V
PA6
1
13
3
14
16
19
18
20
L IN
R IN
SDA1
SCL1
SP MUTE
RESET
POFF DEF
MAIN DEF
15
1
32
16
R IN
SCL1
SDA1
L IN
20
12
L OUT
R OUT
Q2408
Q2410
IC2401
AUDIO AMP
Q2402
Q2403
18
18
IN
IN
OUT+
12
13
OUT-
OUT+
12
13
OUT-
1
4
3
PA3
2
SP L+
SP L-
SP R+
SP R-
5
5
Q7502
Q7509
Q7510
TV ON
36
32
AC ON/OFF
PA2
15
SUB 9V2
21
23
7
19
SUB 5V
11
13
MAIN 3.3V
MAIN 2.5V
25
27
STB5V
Q2306
Q2305
STB5V
STB5V
Q2304
Q2303
Q2308
Q2311
Q2309
BEEF
BEEF
17
17
25
25
AMP
STB SW
AMP
STB SW
MUTE
A MUTE
TO
DG6
DG2
TO
SPEAKER
TO
Q7543
Q7504
Q7541
MAIN5V
Q7542
SOS
33
IC2301
HP AMP(L)
IC2302
HP AMP(R)
PA
SRQ
8
2
6
ICC CONT
SCL0
1
SRQ
IRQ
7
SDA0
STB5V
PA24
12
SUB3.3V
SCL3
1
RXD
LOADER
7
11
SDA3
PA23
VPP
SCL3
3
SRQ
5
7
7
SDA0
1
SCL3
5
SDA3
3
VPP
7
SDA1
1
STB5V
TXD
RXD
SCL2
SCL1
15
11
9
SCL0
IRQ
7
SCL1
SCL2
5
SDA1
ICC CONT
10
RST
SCL1
5
11
STB5V
ICC CONT
SDA3
4
SCL2
12V
1
STB5V
9
TXD
10
RXD
SDA1
12V
5
STB5V
4
TXD
4
12V
2
STB5V
1
TXD
SCL3
RXD
STB5V
12V
2
STB5V
8
RXD
8
PA12
PA4
PA21
6
IRQ
RST
SCL2
PA8
17
TXD
4
18
SDA3
PA22
9
3
8
10
6
14
SDA1
SCL2
STB5V
ICC CONT
RST
SDA3
6
IRQ
SCL2
RST
3
SDA3
SCL3
SCL2
SCL1
SCL3
SUB3.3V
19
4
5
SCL2
SRQ
SCL0
SDA0
SCL3
SUB3.3V
SCL3
SDA3
SCL0
SUB3.3V
SRQ
VPP
SDA3
SDA0
VPP
TXD
RXD
LOADER
ICC CONT
SCL3(PANEL)
SDA3(PANEL)
TXD
LOADER
RXD
LOADER
RXD
TXD
ICC CONT
SCL3(PANEL)
SDA3(PANEL)
TO DG8
Speaker out,Regulator Board
28
1
1
28
HP IN
HP OUT
HP OUT
HP IN
TO K9
6
4
PA9
HP L
HP R
3
5
4
TUNER 30V
IC7581
Q7581
Q7582
SUB 9V
BT 30V
1
Q2312
Q2310
1
+15Vs
PA7
3
+15Vs
TO P7
PA5
TO P5
1
4
8
2
7
12V
12V
STB5V
+12Vs
+12Vs
3
5V
12V
STB5V
TH-42PA20U
PA-Board Block Diagram
TH-42PA20U
PA-Board Block Diagram
60
Summary of Contents for TH-42PA20U/P
Page 11: ...4 TH 42PA20U A ...
Page 28: ...6 2 Lead of Wiring 2 9 ...
Page 29: ...6 3 Lead of Wiring 3 10 ...
Page 30: ...6 4 Lead of Wiring 4 11 ...
Page 55: ...16 Mechanical Replacement Parts List 36 ...
Page 61: ...C2342 ECA1HHG100 E 10UF 50V 1 42 ...
Page 78: ...R416 ERJ6ENF2551 M2 55KOHM 1 10W 1 59 ...
Page 82: ...R2453 ERJ6GEYJ103 M 10KOHM J 1 10W 1 63 ...
Page 95: ...76 ...
Page 225: ...1 Applicable signals 4 TH 42PA20U P ...
Page 230: ...6 Location of Lead Wiring 6 1 Lead of Wiring 1 9 TH 42PA20U P ...
Page 231: ...6 2 Lead of Wiring 2 10 TH 42PA20U P ...
Page 232: ...6 3 Lead of Wiring 3 11 TH 42PA20U P ...
Page 233: ...6 4 Lead of Wiring 4 6 5 Lead of Wiring 5 12 TH 42PA20U P ...
Page 242: ...9 4 IIC mode structure following items value is sample data 21 TH 42PA20U P ...
Page 253: ...32 TH 42PA20U P ...