Grundig Toronto 32-7830 T, Service Manual

Page: 59 / 95

GRUNDIG Service Chassis BL (LX prime IDTV)
2 - 33
Hauptplatte – Verstärker / Main Board – Amplifier
L507
120R/100MHZ
+24V
10W Audio Amp
ST.BY
C521
1U
GND
GND
C523
4,7u
C519
1u
C520
1U
GND
GND
L505
33uH
L504
33uH
C531
1uF/50V
C526
220N
C527
220N
C522
1U
C500 100n/50V
C505
10n/50V
GND
GND
C530
1uF/50V
C504
100n/50V
C503
100n/50V
GND
GND
C506
10N
C
524
220N
C525
220N
R517
100k
R516
100K
L502 33uH
L503 33uH
C502
100N
C501
100N
+
C529
220U
C528
220U
GND
C518
1uF/25V
C517
1uF/25V
C515
1uF/25V
C516
1uF/25V
GND
GND
J505
100K
J500 0R
J504
100K
J501 0R
GND
GND
AUOutR
AUOutL
R512
1K2
R513 1K2
C511
2n2F
GND
C512
2n2F
GND
MUTE_S
R518
*
GND
NC
1
RINN
2
RINP
3
AGND
4
LINP
5
LINN
6
NC
7
GAIN0
8
GAIN1
9
MSTR/#SLV
10
SYNC
11
NC
12
NC
13
RO
SC
14
VR
EG
15
VB
YP
16
AG
ND
17
BS
LP
18
LOUT
P
19
LOUT
P
20
LOUT
N
21
LOUT
N
22
BS
LN
23
NC
24
NC
25
PVCCL
26
PVCCL
27
PGNDL
28
PGNDL
29
VCLAMPL
30
VCLAMPR
31
PGNDR
32
PGNDR
33
PVCCR
34
PVCCR
35
NC
36
NC
37
BS
RN
38
RO
UT
N
39
RO
UT
N
40
RO
UT
P
41
RO
UT
P
42
BS
RP
43
#S
HU
TD
OW
N
44
MU
TE
45
FAUL
T
46
NC
47
AV
CC
48
GN
D
49
IC501
TPA3101D2
+12V
AUVDD
Vreg
Vreg
GND R511
100
R510
100
R515
22k
R514 22k
GND
GND
D501
IMBD4148
D500
IMBD4148
C534
2N2/ NC
GND
R522
4K7
C546
2N2/ NC
C544
2N2
C545
220N
GND GND
C537
100U16V
C538
100U16V
C539
1N
C540
1N
GND
GND
AUOutL1
GND
OUTA
1
INA(NEG)
2
INA(POS)
3
VSS
4
INB(POS)
5
INB(NEG)
6
OUTB
7
VDD
8
IC502
TDA1308T
GND
C547
100nF/25V
R523
10K
R524
10K
GND
C535
1N5
R520
15K
C536
1N5
R521
15K
R519
4K7
C532
2N2
C533
220N
GND
AUOutR1
+5V_SW
GND
+5V_SW
C508
1uF
L501
FB
24V SENSE
J503
*
J502 0R
HPL
HPR
B82473–A1333–K
B82473–A1333–K
B82473–A1333–K
B82473–A1333–K
R+
R-
L-
L+
L506
*
AUOutL1
AUOutR1
R502
100
R501
100
C548
10n/50V
C542
10n/50V
C543
10n/50V
C541
100n/50V
GND
GND
GND
GND
L508
FB
L509
FB
C549
100p
C550
100p
GND
GND
1
2
3
S502
HPhone
GND
1
2
3
4
S324
MOLCON4
L+
L-
R-
R+
L512
055626R 120R 3A
L513
055626R 120R 3A
AUVDD
+
C551
10uF/35
L514
055626R120R3A
L515
055626R 120R 3A
L516
055626R120R 3A
L517
055626R120R 3A
R823 *
SMPSON/OFF
1
2
R828
10K
1 2
R826
47k
T710
BC847B
GND
1
2
R827
10K
+3.3V
+3.3V 1 2
L511
A7502BY-330M
1 2
L510
A7502BY-330M
R577
3.3K
R576
3.3K
20
21
23
22
23
24
Biases
and
References
Startup
Protection
Logic
VREGok
RINP
RINN
Ramp
Generator
ROSC
VCCok
AVCC
VREG
PWM
Logic
Gain
Control
Gain
Control
LINP
LINN
SHUTDOWN
VBYP
VBYP
MSTR/SLV
PWM
Logic
SYNC
AVCC
AVCC
AVCC
Gain
Control
GAIN0
GAIN1
8
To Gain Adj.
Blocks and
Startup Logic
MUTE
FAULT
VREG
AGND
VBYP
VBYP
VREG
VBYP
VClamp
Gen
PVCCR
Gate
Drive
Gate
Drive
VClamp
Gen
Gate
Drive
Thermal
SC
Detect
PVCCR
Gate
Drive
BSLN
VCLAMPL
PVCCL
PVCCL
BSLP
LOUTN
BSRN
VCLAMPR
PVCCR
PVCCR
ROUTN
BSRP
ROUTP
PGNDR
PVCCL
PVCCL
PGNDL
LOUTP
Gain
Gain
Gain
Gain
TLL Input
Buffer
TLL
(VCC Compliant)
(VCC Compliant)
4V Reg
Input
Buffer
TPA3101D2
2
1
3
4
8
7
6
5
INA(neg)
TDA1308(A)
OUTA
VSS
VDD
INA(pos)
INB(neg)
INB(pos)
OUTB
)
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