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PA DC/DC Audio
IC7502
SW REG
TO PF10
PA10
+9V2(S)
L7505
UNR_21V
1
1
AVR
2
9V
UNR_21V
C7506
2
R7505
UNR_14V
5
STB_5V
7
Q7502
R7506
+9V(M)
AC_ON/OFF
9
CONTROL
SW REG
IC7501
+9V1(S)
L7502
1
2
AVR
9V
C7502
SW REG
IC7503
+5V(S)
L7508
1
AVR
2
5V
C7512
R7516
Q7506
R7514
AUDIO+14V
Q7507
AUDIO+14V
CONTROL
SW REG
IC7504
+4.2V(M)
L7511
1
AVR
2
5
4.2V
C7517
SW REG
IC7505
+2.5V(M)
L7514
1
AVR
2
5
2.5V
C7522
R7519
Q7509
Q7510
+3.3V(M)
+2.5V(M)
CONTROL
+3.3V(M)
Q7543
STB5V
Q7541
R7543
R7544
R7541
R7539
R7525
D7542
R7540
NR_21V
D7541
C7541
NR_14V
R7545
D7544
+5V(S)
Q7504
R7546
D7543
+9V1(S)
UNR21V,UNR14V
+9V1(S),+9V2(S)
D7545
+9V2(S)
+5V(S) LINE
D7539
VOLTAGE DOWN DET
D7538
R7537
MAZ30470HL
Q7544
R7526
R7538
D7540
D7537
MAZ30390HL
R7527
+3.3V(M),+2.5V(M) LINE
OVER VOLTAGE DET
TUNER POWER SOS DET
SOS BLINKING TIMES
:
LED 12 TIMES
TH-37PA30E/TH-42PA30E
PA-Board Block Diagram
SW REG
IC7551
MAIN 12V
L7552
1
AVR
2
R7560
5
12V
4
C7552
Q7553
3
VREF
R7551
1
ERROR
PWM
DET
COMPARATOR
R7552
OSC
7
TV POWER
PROTECT
2
START
CONTROL
C7582
4
OUT
IC7581
Q7581
BT+30V CONTROL
BT+30V
Q7501
+9V(M)
IC2304
AUDIO+9V
AVR
1
3
9V
D7546
R7549
Q7542
R7547
R7548
D7549
C7543
D7547
+9V(M)
+2.5V(M)
+2.5V(M),+9V(M) LINE
VOLTAGE DOWN DET
TO DG2
PA2
BT_30V
1
L7582
D7582
R7582
8
R7586
C7583
TO DG6
PA6
Q7582
L_IN
1
5
BT+30V OUT
R_IN
3
34
S_CLOCK1
13
TV_ON/OFF
21
SUB_9V2
S_DATA1
14
23
SUB_9V2
2
MAIM_12V
3
SUB_5V
20
MAIN_DEFEAT
SUB_5V
5
19
POWER_OFF_DEFEAT
15
MAIN_9V
18
RESET
SUB_5V
7
17
STB_5V
19
SUB_5V
MAIN_4.2V
11
MAIN_4.2V
13
MAIN_2.5V
25
27
MAIN_2.5V
SPEAKER_MUTE
16
17
UNR_14V
32
TV_ON
TO P7
33
PA7
SOS
36
AC_ON/OFF
AUDIO_15V
1
2
AUDIO_15V
PA5
TO P5
7
AUDIO_12V
AUDIO_12V
8
STB_5V
4
IC2401
SOUND CONTROL
3
LIN
1
L AMP
L OUT
25
5
BASS
AGC
SURROUND
ADJ
EQUALIZER
TREBLE
RIN
TONE
2
R AMP
R OUT
24
30
31
26
SCL1
SDA1
IIC_BUS
IIC_BUS
Q2303,Q2304,Q2308
AUDIO
MUTE
CONTROL
3
Q2305,Q2306
5
Q2309,Q2311
SPEAKER
MUTE
CONTROL
1
2
3
3
2
1
2
4
5
6
7
1
PA8
15
9
10
11
12
18
PA17
PA25
PA23
TO
DG8
(FOR FACTORY)
(FOR FACTORY)
IC2306
SQUAWKER AMP(R)
SP_R+
11
AMP
16
SP_R-
17
4
IC2403
20
ACTIVE
FLITER
1
400Hz
PA3
SQUAWKER(R)
IC2305
HPF
7
1
SQUAWKER AMP(L)
8
2
SP_L+
11
AMP
16
3
SP_L-
17
4
4
SQUAWER(L)
20
IC2302
WOOFER(R)
WOOFER AMP(R)
PA1
SP_R+
11
AMP
16
1
IC2402
SP_R-
17
2
4
ACTIVE
4
FLITER
20
5
1
400Hz
LPF
7
IC2301
WOOFER(L)
8
WOOFER AMP(L)
SP_L+
11
AMP
16
SP_L-
17
4
20
IIC_BUS CONNECTION(FOR FACTORY USED)
7
Vpp12V
5
STB_5V
3
RXD
1
TXD
PA12
TO D12
RESET
11
RESET
IRQ
10
IRQ
SDA3
9
S_DATA3
SCL3
8
S_CLOCK3
SDA2
7
S_DATA2
SCL2
6
S_CLOCK2
SDA1
5
S_DATA1
SCL1
4
S_CLOCK1
IIC_CONT
2
IIC_CONT
STB_5V
1
STB_5V
PA4
TO D4
19
6
14
5
3
1
PA21
8
7
6
5
4
2
1
PA22
7
11
10
9
(FOR FACTORY)
(FOR FACTORY)
TH-37PA30E/TH-42PA30E
PA-Board Block Diagram
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