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GRUNDIG Service
Hauptplatte – Verstärker / Main Board – Amplifier
BC857BL
BC857BL
D28
D28
Q36
Q36
24V_A
2
3
1
2
1N4148W
1N4148W
D32
D32
1
3
12V
BZX84C-6V2
BZX84C-6V2
D31
D31
1
3
24V_A
D17
D17
BZX84C-18V_DNS
BZX84C-18V_DNS
BZX84C-5V1
BZX84C-5V1
C521
C521
2
1nF
1nF
R583
R583
10K_603
10K_603
H: 24V ON
AGND
L: 24V OFF
A_MUTE1
0_603
0_603
R456
R456
24V_ON_OFF
R459
R459
0
0
A_MUTE
H: 12V ON
R460
R460
0_DNS
0_DNS
HDMI_MUTE
L: 12V OFF
MONITOR_R
1K_603
1K_603
R461
R461
R462
R462
LS2AMP_R
5.6K_603
5.6K_603
R611
R611
C380
C380
R463
R463
2200pF
2200pF
3.6K_603
3.6K_603
5,6K 10W option
34
1
A_MUTE1
AGND
MONITOR_L
1K_603
1K_603
R464
R464
R465
R465
LS2AMP_L
5.6K_603
5.6K_603
C386
C386
R466
R466
2200pF
2200pF
3.6K_603
3.6K_603
AGND
1
A_MUTE1
Hauptplatte – Verstärker Subwoofer / Main Board – Amplifier Subwoofer
24V_S
24V
D34
D34
MBRS360T3_DNS
MBRS360T3_DNS
R610
R610
0R
0R
35
C428
C428
R499
R499
SUB2AMP
5.1K
5.1K
2.2uF_EC
SUB2AMP_GND
C430
C430
R59 0_603
R59 0_603
0_603
0_603
R56
R56
R500
R500
5.1K
5.1K
1uF_EC
1uF_EC
A_MUTE#
EN - L : DISABLED
EN - H : ENABLED
24V_S
MP7782
19
3
14
10
D27
D27
2
1
ZENER_2V7
ZENER_2V7
SHUTDOWN-L: IC SHUTDOWN
SHUTDOWN-H: NORMAL OPERATION
MUTE-L: OUTPUT ENABLED
MUTE-H: OUTPUT DISABLED
C378
C378
680K
680K
1uF_25V
1uF_25V
4.7R/603
4.7R/603
Q12
Q12
C387
1uF_25V
TC33
TC33
2N7002
2N7002
470uF_35V
1uF_25V
1uF_25V
C492
C492
C385
C385
0.1uF_603
0.1uF_603
AGND
C379
C379
1uF_25V
1uF_25V
AGND
120_Ohm_3A
120_Ohm_3A
24V_A
L29
L29
TC34 470uF_35V
TC34 470uF_35V
R612
R612
4.7R/603
4.7R/603
24V
D33
D33
Q13
Q13
MBRS360T3_DNS
MBRS360T3_DNS
2N7002
2N7002
R609
R609
0R
0R
›
C419 27pF_603
C419 27pF_603
R494
R494
75K
75K
R495
R495
75K
75K
24V_S
L32
L32
150_Ohm_2A
150_Ohm_2A
+ +
C423
C423
1pF
1pF
U53 MP7782_R2
U53 MP7782_R2
C427
C427
AGND
1
20
NC1
PGND1
2200pF
2200pF
2
19
FB21
SW1
3
18
FB11
VDD1
4
17
AGND
BS1
5
16
NC2
NC4
6
15
EN1
PGND2
7
14
FB22
SW2
8
13
FB12
VDD2
9
12
AGND
BS2
10
11
EN2
NC3
C433
C433
R503
R503
0.1uF
0.1uF
4.7K
4.7K
AGND
AGND
AGND
C436
C436
1pF
1pF
R505
R505
75K
75K
R506
R506
75K
75K
C437 27pF_603
C437 27pF_603
AVCC
LIN
AGND
SD
MUTE
BYPASS
GAIN1
GAIN0
24V_A
RIN
L62
L62
150_Ohm_2A
150_Ohm_2A
TC32
TC32
+
+
C376
C376
100uF_35V
100uF_35V
1uF_35V
1uF_35V
AGND
U51
U51
1
24
PVCLL1
PGNDL2
C371
2
23
/SD
PGNDL1
0.22uF_0805
3
22
PVCCL2
LOUT
4
21
MUTE
BSL
5
20
LIN
AVCC2
6
19
RIN
AVCC1
7
18
BYPASS
GAIN0
8
17
AGND0
GAIN1
9
16
AGND1
BSR
10
15
PVCCR1
ROUT
11
14
C372
VCLAMP
PGNDR2
12
13
PVCCR2
PGNDR1
0.22uF_0805
0.1uF_603
0.1uF_603
C384
C384
AGND
TPA3120D2
TPA3120D2
AGND
24V_A
fi
D18
D18
1N4148W
1N4148W
R496
R496
20K
20K
1
2
C420
C420
AGND
+ +
C422
C422
390pF
390pF
1uF_50V
1uF_50V
D19
D19
C424
C424
R497
R497
D20
D20
C425
C425
10
10
1uF_25V
1uF_25V
6V2
AGND
C432
C432
D21
D21
D22
D22
R501
R501
1uF_25V
1uF_25V
ZENER_6V2
ZENER_6V2
10
10
AGND
R504
R504
C434
C434
20K
20K
390pF
390pF
D23
D23
1N4148W
1N4148W
AGND
41
AVDD
HS
+
VCLAMP
-
REGULATOR
AVDD
AVDD
LS
SC
DETECT
AVDD/2
CONTROL
BIAS
THERMAL
MUTE
SC
CONTROL
DETECT
OSC/RAMP
BYPASS
AV
-
HS
CONTROL
+
VCLAMP
AVDD
AVDD
LS
TPA3120D2
AVDD/2
22uH_1.2A
22uH_1.2A
L27
L27
+
+
37
TP96
TP96
38
C373
C373
C374
C374
1uF_35V
1uF_35V
0.68uF
0.68uF
C390
C390
C391
C391
1uF_35V
1uF_35V
0.68uF
0.68uF
0 0
TP98
TP98
AGND
24V_A
22uH_1.2A
22uH_1.2A
L30
L30
‡
°
AGND
C421
C421
0.1uF_603
0.1uF_603
R498
R498
AGND
10
10
C426
C426
TP101
TP101
L33
L33
CON18
CON18
15uH_3.5A
15uH_3.5A
C429
C429
1
37
50V
2
L34
L34
2317-02S
2317-02S
15uH_3.5A
15uH_3.5A
C431
C431
38
R502
R502
TP102
TP102
10
10
AGND
C435
C435
0.1uF_603
0.1uF_603
AGND
Chassis SR
BSL
PVCCL
LOUT
PGNDL
VCLAMP
BSR
PVCCR
ROUT
PGNDR
680uF_35V
680uF_35V
C482
C482
TP95
TP95
CON16
CON16
R+
4
R-
3
L-
2
L+
1
2317-04S
2317-04S
TP97
TP97
C481
C481
680uF_35V
680uF_35V
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