Main.circuit.diagram; Hauptschaltplan - Grundig Boston ST 70-7510/8 Dolby Service Manual

Grundig tv service manual
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Chassisplatte – Hauptschaltplan / Chassis Board – Main Circuit Diagram
ZA9190-05
SC1_VID_IN
SC1_VID_OUT
SC1_F _BLANK
SC1_R _IN
SC1_G _IN
STATUS1
SC1_B_IN
2 SCART
R217
0R
R218 0R
C273
C274
8V
R271
47n/25V
47u/16V
0R
R264
0R
IC201
4053
1
15
Y_IN
2
10
13
14
C_IN
12
11
8V
3
R219
R220
4
47k
47k
R221
5
4.7k
R222
C243
4.7k
47n/25V
8V
R223
10k
T201
BC848B
R224
10k
C244
470n/ 1 6V
C245
47n/25V
R241
47R
SC3_R _IN
SC3_G _IN
STATUS3
SC3_B_IN
SK201
R209
SC ART1
75R
S1VI
R210
68R
S1VI
R211
S1VO
75R
R212
S1RGB
75R
R213
R207
C210
75R
1k
220p
S1RGB
R214
S1RGB
S1RGB
10k
R208
C211
S
1k
220p
S
C212
220p
R216
S
75R
S1RGB
C218
470n/ 1 6V
SK202
SC2_VID_IN
SC ART2
C219
R225
75R
47n/25V
S2VI
SC2_VID_OUT
R226
*** see variant list page 10
68R
S2VI
S2VO
R265
0R
R232
STATUS2
10k
C242
220p
S
C236
C238
R235
1n
R234
100R
47u/16V
330R
C240
1n
R237
S
S
C237
330R
R238
100R
47u/16V
C241
C239
1n
1n
S
S
R239
SK203
SC ART3
100R
R240
C247
R249
75R
220p
1k
S3RGB
R242
SC3_VID_OUT
68R
S
SC3_F _BLANK
S3RGB
C258
R243
R250
S3VO
220p
75R
1k
R244
S3RGB
75R
R245
75R
S3RGB
S
R246
S3RGB
T202
S3RGB
10k
BC848B
C246
220p
S3RGB
S
R255
R248
2.2k
75R
C262
R257
S
47u/16V
R256
330R
S3RGB
C264
330R
1n
T203
C263
BC848B
1n
S
S
C267
R259
C265
47u/16V
R258
330R
1n
330R
R260
2.2k
C266
1n
S
S
S
C201
C203
C202
47u/16V
R202
R201
1n
1n
33
330R
100R
C206
34
R204
R203
S
S
47u/16V
C205
330R
C204
100R
35
1n
1n
BACK MODUL
C207
S
S
R205
C209
1
36
470p
47R
2
47u/16V
R206
C208
37
3
47R
S
47u/16V
C214
38
10u/63V
8V
C216
C213
L201
47n/25V
39
470p
10uH
S
C215
40
C217
10u/63V
100u/ 1 6V
41
R227 ***
42
C221
C220
100n/ 1 6V
X202
43
3.3u/50V
R228
1
47R
2
C222
44
4.7u/63V
3
45
C223
4
4.7u/63V
R229
5
46
C224
C225
330R
6
4.7u/63V
1n
47
R230
FR_AV
C227
C226
330R
4.7u/63V
48
1n
R231
C228
49
C229
4.7u/63V
1k
C230
470p
220p
C231
50
4.7u/63V
S
S
R236
51
C235
1k
C234
470p
220p
C232
52
4.7u/63V
S
S
C233
53
4.7u/63V
54
55
MONO_PIP
C248
C251
C249
470p
C250
1n
10u/63V
56
100n/ 1 6V
C253
47u/16V
57
S
C252
C254
C257
R251
470p
58
10n
47p
220R
C255
59
QS S_TUN1
47p
8V
S
C256
60
C259
47p
10u/63V
R252
33k
61
R253
C260
Q201
1k
1.5p
18.432MHz
62
R254
33k
63
C261
1.5p
C272
S
47n/25V
8V
64
R261
33k
S
R262
C268
10u/63V
1k
R263
33k
S
32
SC2_O UT_R
DAC_S
C346
RFFU
R301
OPT.SUBWOOFER
31
SC2_O UT_L
DAC_SUB
C302
C301
470R
470p
470p
30
C345
VREF1
DAC_C
RFFU
R302
29
SC1_O UT_R
DACM_L
C304
C303
470R
470p
470p
28
SC1_O UT_L
DACM_R
R303
C307
100u/ 1 6V
C306
27
C305
470R
CAPL_A
VREF2
470p
470p
26
AHVSUP
DACA_L
5
KABLO 3_A
C309
R305
R304
25
1n
1k
6
CAPL_M
DACA_R
27k
7
C308
24
AHVSS
RESETQ
220p
R306
27k
8
23
AGNDC
NC6
C310
R307
1n
1k
C311
220p
22
SC4_IN_L
NC5
R308
MSP_RESET
21
220R
SC4_IN_R
NC4
C313
100n/ 1 6V
R309
20
ASG4
I2S_DA_IN2
10k
19
SC3_IN_L
DVSS
L302
IC301
18
SC3_IN_R
DVSUP
10uH
MSP3410G
17
ASG2
ADR_CL
C316
C317
C318
C315
1n
47n/25V
47u/16V
220p
16
SC2_IN_L
ADR_WS
15
SC2_IN_R
ADR_DA
14
ASG1
I2S_DA_IN1
13
SC1_IN_L
I2S_DA_OUT
12
SC1_IN_R
I2S_WS
19
11
VREFTOP
I2S_CL
R333
10
MONO_IN
SDA
SDA
(
100R
R334
9
AVSS
SC L
SC L
100R
8
AVSUP
NC3
20
7
ANA_IN1+
STANDBYQ
6
ANA_IN-
ADR_SEL
5
ANA_IN2+
D_CTR_OUT0
R335
4
TESTEN
D_CTR_OUT1
)
10k
3
XTAL_IN
NC2
2
XTAL_OUT
NC1
1
NC7
AUD_CL_OUT
L301
10uH
Subwoofer
L_OUT
R_OUT
R_
OUT
IC302
OPTION HEADPHONE
TDA2822M
4
-IN2
GND
X301
C319
HEADPHONE
100u/ 1 6V
3
1
L_OUT
+IN2
OUT2
C320
2
100n/ 1 6V
2
+IN1
VCC
C321
1n
R311
3
1
4.7R
-IN1
OUT1
C322
100u/ 1 6V
C312
100u/ 1 6V
C323
100n/ 1 6V
MUTE
R310
8V
4.7R/FUSE
C324
R312
1n
4.7R
C326
C325
47n/25V
100u/ 1 6V
5V
R323
33k
Subwoofer
1N
R
2

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