Norcent LT3225 Service Manual page 55

32'' LCD TV
715T2091 C
FAULT TPA3100D2
L ( 0V~0.8V ) ACTIVE
H ( 2V~VDD ) FAULT
SHUTDOWN TPA3100D2
L ( 0V~0.8V ) SHUTDOWN
H ( 2V ~ VDD ) ACTIVE
MUTE TPA3100D2
L ( 0V~0.8V ) ACTIVE
H ( 2V~VDD ) MUTE
+20V
+
R28
10K 1/10W
Q5
2SC2412KR
SIGNAL & CONTROL INPUT
CN7
1 D12V R26
2 SRS_H NC/0
3
4 LIN Q2
D4
5 RIN NC
6 MUTE_H
R5 D2
MLL4148
1K 1/10W MLL4148
CONN
R25 L7
100 1/10W
D12VA D12V
C10 0.033uF 100uH +-20%
R10 NC
LOUT LIN
R11 NC
C13 0.01uF ROUT RIN
C16 10uF/25V LIN
C17 0.47uF
U2
C18 10uF/25V RIN
1 14
FIL1 LIN
C20 0.33uF 2 13 LOUT
FIL2 RIN
3 12
FIL3 LOUT
4 11 ROUT
VOL2 ROUT
5 10
VOL1 MODE
6 9 SRS_H
Vref IN GND
7 8
R13 10K 1/10W
Vref V+
R12
10K 1/10W
NJM2199M
C27
1uF 8 Ohm speak
+ C30
C31 C29 1uF R35
10uF/16V 100uF/25V
R36
R37
R38
LOUT_N
C46 NC
U3
R31
ROUT_N 1 10
V+ GND 0
2 9
OUTa OUTb
R32 3 8 LOUT
INa INb
0 1/10W C47 NC 4 7 C48 NC
INT SW
5 6
VREF SENSE
ROUT C49 NC
R33 NC/0
C50 NC NC/NJM2761RB2
R34 NC
L2
ROUT-
22uH
0.47uF
+20V +20V
L4
ROUT+
22uH
R1
10K 1/10W
Q1 SHUTDOWN
2SC2412KR
D1
RLZ6.8B
R6
Q3 10K 1/10W SHUTDOWN
NC
MUTE
FAULT
+20V
C9
1uF U1
AGND
C51 R35 1
GND
10uF/25V 1.2K 1/10W
ROUT_N C11 4.7uF 2
RINN
C14 4.7uF 3
RINP
R36
3.3K 1/10W 4
AGND
AGND
C52 R37 C19 4.7uF 5
LINP
10uF/25V 1.2K 1/10W
LOUT_N C22 4.7uF 6
LINN
7
GAIN0
R38
3.3K 1/10W GAIN0 8
GAIN0
GAIN1 9
GAIN1
R14 10
VREG MSTR/SLV
33K 1/10W
16 Ohm speak 11
SY NC
1k Ohm 0 12
GND
VREG
3k Ohm NC
1k Ohm 0
TPA3100D2PHPR
3k Ohm NC
VREG
GAIN0
GAIN1
AGND
1/10W
AGND
L9
GAIN0 GAIN1 GAIN ( dB ) LOUT-
0 0 20 22uH
1 0 26
0 1 32 0.47uF
1 1 36
L11
LOUT+
22uH
55
R21 0 1/3W
2 1
L1 NC/600 OHM
2 1
L3 NC/600 OHM
CN3
C1
0.1uF C2 SPK_R- 1
C3 0.001uF 2
SPK_R+
PGND
C4 CONN
2 1 0.001uF
L5 NC/600 OHM
C5 2 1
0.1uF L6 NC/600 OHM
PGND
R22 0 1/3W
CN6
+20V 1
2
3
4
AUDIO POWER SUPPLY INPUT
CONN
+20V
Close to IC
36
GND
35 C12 1uF
PVCCR
34 C15
PVCCR
220uF/35V
33
PGNDR
32
PGNDR
31 C23 1uF
VCLAMPR
30 C25 1uF
VCLAMPL
29
PGNDL
28
PGNDL
C26
27 220uF/35V
PVCCL
26 C28 1uF
PVCCL
25
GND
+20V PGND
R23 0 1/3W
2 1
L8 NC/600 OHM
2 1
L10 NC/600 OHM
CN1
C37
SPK_L-
0.1uF C38 1
C39 0.001uF 2
SPK_L+ 3
PGND
C40
2 1 0.001uF CONN
L12 NC/600 OHM
C41 2 1
0.1uF L13 NC/600 OHM
PGND
R24 0 1/3W
Title
PAGE 01 AUDIO POWER AMP.
Size Document Number
Custom T2091-C-X-X-1-060906
Date: Tuesday , September 05, 2006 Sheet 1
Norcent LT3225
Rev
C
of 2