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GRUNDIG Service
Chassisplatte T9 – Verstärker / Chassis Board T9 – Amplifier YVR190R-8
VCC3.3V-ST
Audio-ON/OFF R806
NC/1k
Audio-ON/OFF
MUTE_S
R852
1k
MUTE_S
R811
AU_DACO_L
C813
AU_DACO_L
1uF
470R
R813
47K
C824
3.3nF
22
R816
AU_DACO_R
C814
AU_DACO_R
1uF
470R
R819
47K
C826
3.3nF
R801
GAIN0
10K
VCC3.3V-ST
R830
100
R800
GAIN1
10K
GAIN1
L
H
L
H
GAIN2
L
L
H
H
AMP-Gain 20dB
26dB
30dB
36dB
OUTPL FB
LINP
LINN
OUTNL FB
FAULT
SD
GAIN0
GAIN1
PLIMIT
AVCC
Regulator
GVDD
OUTNN FB
RINN
RINP
OUTNP FB
PBTL
AGND
P24V
L800
120R/100MHz
R803
10K
TP800
2
4
6
8
R851
C843
4*47R
330uF/35V
1
3
5
7
MUTE
1
#SD
2
#FAULT
3
LINP
4
LINN
GAIN0
5
GAIN0
C817
6
GAIN1
1uF
GAIN1
7
AVCC
8
AGND
R802
3k6
9
GVDD
C804
10
1uF
PLIMIT
11
RINN
12
RINP
13
NC
14
PBTL
R804
C803
C807
1k
C802
1uF/10v
1uF/25V
IC800
TPA3113D2
1uF/10V
P24V
R844
22K
T800
R833
BC847B
R835
22K
1.2k %1
R836
2
R832
2K 1%
4.7k
IC803
ZTL431AFFTA
Option: In dependent on SMPS
TPA3113D2
Gain
PLIMIT
Control
TTL
Buffer
Gain
Control
Ramp
Generator
PLIMIT
Reference
AVDD
LDO
GVDD
Gain
PLIMIT
Control
TTL
PBTL
Buffer
Select
C846
10uF/35V
C806
L803
28
120R/100MHz
PVCCL
220nF
27
23
PVCCL
26
BSPL
L804
25
L+
OUTPL
24
120R/100MHz
PGND
C808
23
L-
220nF
OUTNL
22
BSNL
21
1n(470nF)
BSNR
20
R-
OUTNR
C809
19
220nF
PGND
L805
18
R+
OUTPR
17
120R/100MHz
BSPR
23
16
PVCCR
15
PVCCR
L806
C805
120R/100MHz
C801
220nF
10uF/35V
1n(470nF)
L+
L801
L-
L807
R-
L808
R839 330R %1
R+
L802
+5V_ST
C815
C816
C818
C819
100p
100p
100p
100p
GVDD
PVCCL
PVCCL
PBTL Select
Gate
Drive
PWM
Logic
GVDD
PVCCL
PVCCL
Gate
Drive
SC Detect
Startup
DC Detect
Biases and
Protection
References
Thermal
Logic
Detect
UVLO/OVLO
GVDD
PVCCL
PVCCL
Gate
Drive
PWM
Logic
GVDD
PVCCL
PVCCL
Gate
Drive
PBTL Select
2 - 38
™
TP801
SP_LEFT+
24
SP_LEFT-
S800
C800
C811
1
2
1n(470nF)
3
4
SPEAKER
TP109
SP_RIGHT-
24
£
SP_RIGHT+
TP41
C812
C810
1n(470nF)
SP_LEFT+
NR6045T220M
SP_LEFT-
NR6045T220M
SP_RIGHT-
NR6045T220M
SP_RIGHT+
NR6045T220M
≤
BSPL
OUTPL FB
OUTPL
PGND
BSNL
OUTNL FB
OUTNL
PGND
BSNR
OUTNR
OUTNR FB
PGND
BSPR
OUTPR
OUTPR FB
PGND
Chassis T8 / T9
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