Grundig STF 72-2010/8 Top, Service Manual, Page: 31 / 38

GRUNDIG Service Chassis 22.2
30
Chassisplatte – Hauptschaltplan / Chassis Board – Main Circuit Diagram
ZA9190-05
MUTE
T301
BC848B
R318
1.5k
R320
10k
R321
10k
OUT1+
1
OUT1-
2
VC
C
3
VC
C
13
MUTE
6
PW_GND
8
S_GND
9
NC
10
NC
11
IN2
12
OUT2-
14
OUT2+
15
NC
5
ST_BY
7
IN1
4
IC303
TDA7297
1
2
3
4
X302
SPEAKER
R313
3.3k
C327
1500u/25V
R314
220R
C330
220n/16V
C329
2.2n
C331
47u/16V
R316
10k
R315
100R D301
1N4148
C332
2.2n
C333
220n/16V
R317
220R
C334
1u/100V
R319
6.8k
C328
100n/25V
CVBS_TUN1
CVBS_PIP
C_IN
SC1_VID_IN
SC1_VID_OUT
SC1_F_BLANK
SC1_R_IN
SC1_G_IN
SC1_B_IN
STATUS1
SC2_VID_IN
STATUS2
SC2_VID_OUT
SC3_VID_OUT
Y_IN
S1VI
S1VO
S1RGB
S2VI
S2VO
S3RGB
H_DRIVE
FLY_BACK
E/W_DRV
V_DRIVE(-)
V_PROT
V)
MSP_RESET
MUTE
DEGAUSS
STAND_BY
PROT.
OUT_L
4
IN- L
8
+V
S
3
-V
S
1
-V
S
6
GND
9
IN+ R
11
OUT_R
2
IN- R
10
IN+ L
7
MUTE
5
IC304
TDA7265
C335
1000u/25V
C342
1000u/25V
C337
1u/100V
C340
1u/100V
C338
1u/100V
R322
15k
R326
220R
R332
470R
R330
18k
R328
18k
R329
470R
R327
4.7R1W
R331
4.7R1W
C336
100n/25V
C341
100n/25V
C339
2.2n
C344
100n/63V
C343
100n/63V
T302
BC848B
R325
15k
R324
15k
T303
BC848B
R323
33k
1
2
X303
SUBWOOFER
OPTION SUBWOOFER
S3VO
SC3_F_BLANK
SC3_R_IN
SC3_G_IN
SC3_B_IN
STATUS3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
X203
SIGNAL
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
X204
POWER
SERVICE
SDA_EE
SCL_EE
1
2
3
4
5
6
7
X205
CONTROL
SDA_3.3
SCL_3.3
1
2
3
4
5
6
X207
SERVICE
SERVICE
SDA_3.3
SCL_3.3
SDA_EE
SCL_EE
D201
1N4148
T204
BC848B
R266
4.7k
R267
4.7k
SDA
D202
1N4148
T205
BC848B
R268
4.7k
R269
4.7k
SCL
R270
0R
1 2 3 4
HS301
AUDI O HEATSINK
R272
0R
R336
33k
R337
??
R338
??
1
2
3
X604
TILT
KABLO 3_B
5V
+15V
5V
+15V
-15V
3.3V_STB
3.3V
5V
12V
3.3V
5V
3.3V
5V
-15V
R_
Subwoofer
OUT
L_OUT
STAND_BY
19
11
18
12
13
14
15
16
20