GRUNDIG Service
Platinenabbildungen und Schaltpläne / Layout of the PCBs and Circuit Diagrams
STR 631 / STR 632
GRUNDIG Service
Platinenabbildungen und Schaltpläne / Layout of the PCBs and Circuit Diagrams
STR 631 / STR 632
Schaltplan Signalteil / Circuit Diagram Signal Part
3 - 9
3 - 10
10uF
16V
20%
C410
10uF
16V
20%
C427
10uF
16V
20%
C436
100uF
16V
20%
C447
10uF
16V
20%
C605
100uF
16V
20%
C448
100uF
16V
20%
C444
10uF
16V
20%
C607
100nF
10%
50V
X7R
C405
1.5nF
10%
50V
X7R
C404
68pF
5%
50V
COG
C423
100pF
5%
50V
COG
C421
12pF
5%
50V
COG
C422
56pF
5%
50V
COG
C420
56pF
5%
50V
COG
C419
12pF
5%
50V
COG
C418
100pF
5%
50V
COG
C417
100pF
5%
50V
COG
C416
10nF
10%
50V
X7R
C415
100pF
50V
5%
COG
C411
100nF
10%
50V
X7R
C414
100nF
10%
50V
X7R
C407
1.5nF
10%
50V
X7R
C406
C
C
2.7nF
10%
50V
X7R
C430
10
1
5
X
C
100nF
10%
50V
X7R
C433
100nF
10%
50V
X7R
C442
1nF
10%
50V
X7R
C443
10nF
10%
X
50V
C441
10nF
10%
X7R
50V
C440
47pF
5%
50V
COG
C451
47pF
5%
50V
COG
C450
???
NF
C449
10nF
X7R
10%
50V
C413
47pF
5%
50V
COG
C412
10nF
10%
50V
X7R
C446
10nF
10%
50V
X7R
C445
1.5nF
10%
50V
X7R
C402
1nF
10%
50V
X7R
C403
220nF
10%
50V
X7R
C401
1N4148
D601
AUX1
100R
5%
R455
AUX1
470R
5%
R421
1K5
5%
R402
1M
5%
R406
470R
5%
R430
470R
5%
R429
470R
5%
R427
470R
5%
R456
10K
5%
R423
5K1
5%
R426
1K5
5%
R425
1M
5%
R408
47K
5%
R407
27K
5%
R433
3K3
5%
R434
47.5K
1%
MF
1/4W
R436
27K
5%
R439
560K
5%
R442
39K
5%
R452
39K
5%
R450
4K7
5%
R451
470R
5%
R529
330R
5%
R449
100R
5%
R521
100R
5%
R520
470R
5%
R422
1M
5%
R604
10K
5%
R601
100R
5%
R602
1K
5%
R605
4K7
5%
R603
680R
5%
7SEG
R609
4K7
5%
7SEG
R606
680R
5%
7SEG
R610
4K7
5%
7SEG
R607
4K7
5%
7SEG
R608
680R
5%
7SEG
R611
220R
5%
R613
220R
5%
R612
1K
5%
R431
470R
5%
R424
47K
5%
R405
3K3
5%
R404
10K
5%
R401
27K
5%
R403
220R
5%
R616
10K
5%
R617
10K
5%
R618
10K
5%
R619
10K
5%
R620
10K
5%
R623
10K
5%
R622
10K
5%
R621
3K3
5%
R428
100R
5%
R461
3K9
5%
R462
3K9
5%
R463
18uH
5%
LAL04
T.Y.
L402
12uH
5%
LAL04
T.Y.
L401
27uH
5%
LAL04
T.Y.
L403
BC857
Q401
7SEG
BC857
Q602
7SEG
BC857
Q603
7SEG
BC857
Q604
BC847
AUX1
Q406
BC847
Q407
BC847
Q601
16:9
LK607
LK603
INDEX
CONTRAST
LK604
VID-INV
LK605
RADIO
LK606
C-BAND
LK608
0056a
LK404
0056a
LK402
0056
LK403
0056
LK401
PK IN L
LEVEL L
PK OUT L
PK OUT R
HA
J17 R
J17 L
I/O/22KHz
S3 OUT R
S3 OUT L
S3 RTN R
S3 RTN L
S3 VID OUT
S3 VID RTN
S1 VID RTN
LEVEL R
PK IN R
S2 OUT R
CLAMP IN
S2 OUT L
S2 VID RTN
VOL L
S2 VID OUT
S1 VID OUT
VOL R
FC R
XTL
Vdd 5V
GND 5V
CPUMP L
DET L
U75 L
AMPLK L
AGC R
A GND L
V ref
A 12V
AMPLK R
DET R
U75 R
CPUMP R
I ref
FC L
A GND R
SDA
SCL
AGC L
FM IN
S2 RTN R
S2 RTN L
B-BAND IN
V GND
VIDEEM1
V 12V
VIDEEM2/22KHz
UNCL DEEM
STV0056A
IC400
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
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
COM
R
L
DUAL_PHONO
PL500
1
2
3
EVENT
P1-5/ /TMOE
IRQ5
IRQ4
IRQ3
IRQ2
IRQ1
IRQ0
PO0/AN0
P2-1
P2-0
P4-5
P4-4
P4-3
P4-2
P4-1
P4-0
Vcc
P8-0
P8-1
P8-2
P8-3
P8-4
P8-5
P8-6
P2-2
P2-3
P2-4
P2-5
P2-6
P2-7
P1-7
P1-6/
P1-4/
P1-3/
P1-2/
P1-1/
P1-0/
RES
OSC2
P8-7
P9-0/PWM
P9-1/SCK1
P9-2/SI1
P9-3/SO1
P9-4/SCK2
CS
P9-5/SI2/
P9-6/SO2
P9-7/UD
PA0
PA1
PA2
PA3
PA4
PA5
PA6
OSC1
Vss
X1
X2
TEST
AVss
PO7/AN7
PO6/AN6
PO5/AN5
PO4/AN4
PO3/AN3
PO2/AN2
PO1/AN1
AVcc
PA7
H8/3614
HITACHI
IC600
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
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
12pF
50V
5%
COG
C604
NF
???
C602
NF
???
C601
12pF
50V
5%
COG
C603
10nF
50V
X7R
10%
C606
BA
D
1
2
8MHz
HC49U
XT602
1
2
32.768KHz
NF
XT601
1
2
NF
PL601
1
2
3
4
5
6
7
8
D507
BZX79C4V7
NF
PL602
1
2
3
4
4K7
5%
R627
4K7
5%
R628
10nF
10%
50V
X7R
C454
10nF
10%
50V
X7R
C455
D506
BZX79C4V7
0R
R624
SERVICE_POINT_3
SERVICE_POINT_4
1
S
1
S
1
SERVICE_POINT_11
1
STBY
VCRYPTIN
VC_VIDO
OSD_RESET
AUX1_AUDOR
AUX1_VIDO
AUX1_AUDOL
S1VIDO
BB_VID
AUX1_AUDIL
AUX2_AUDOL
AUX2_AUDIL
AUX2_AUDIR
AUX2_AUDOR
INT_CLK
INT_CLK
SEG-B
FM_AUD
SCL
SCL
BLUE
GREEN
RED
AUX1_AUDIR
OSD_CS
AUX1_VIDI
PK_SYNC
CMD_MUTE
SEG-DP
FAC-CLK
FAC-CLK
LNB_SENSE
V+
H/V
MAG_POL
MAG_POL
OSD_SCK
AUX2_VIDI
STROBE_T
+12V
+12V
+12V
+12V
22KHZ
TV_AUDOL
TV_AUDOR
MODE
STROBE_H
NO_SYNC
STROBE_U
AUX2_P8I
EXT_EN
SEG-D
EXT_SCL
UP
CLEAR
STBY_BUT
DOWN
IR
AUX1_P8I
SDA
SDA
OSD_SDA
LSDA
SEG-F
EXT_SDA
SEG-A
SEG-G
SEG-C
SEG-E
AUTH
MECH_POL
MECH_POL
BLANK
FAC-DATA
FAC-DATA
+5V
+5V
+5V
+5V
+5V
+5V
+5V
LNB_OFF
FILT_VID
GND
G
10uF
16V
20%
C104
2200uF
16V
20%
C102
470uF
25V
20%
C105
SXT4000
47pF
5%
50V
NF
COG
C100
56pF
5%
50V
COG
C101
100pF
5%
50V
COG
C103
0R
R109
470R
5%
R110
270R
5%
R111
100R
5%
R112
330R
5%
R113
5%
DUAL_LNB
3K3
R102
2K2
5%
DUAL_LNB
R100
4K7
5%
DUAL_LNB
R108
2K2
5%
DUAL_LNB
R101
5%
DUAL_LNB
3K3
R104
82K
5%
DUAL_LNB
R106
10K
5%
DUAL_LNB
R107
4K7
5%
R115
4K7
5%
R114
270R
5%
NF
R116
5%
LAL04
18uH
T.Y.
L100
4.7uH
5%
LAL04
T.Y.
L101
39uH
10%
LHL08
T.Y.
L102
BC857
Q104
BC847
Q105
BC847
DUAL_LNB
Q102
BC847
DUAL_LNB
Q103
SINGLE_LNB
LK101
ZTX712
DUAL_LNB
ZETEX
Q101
ZTX712
DUAL_LNB
ZETEX
Q100
SDA
SCL
p7
p3/ADSW
BBout
AFCout
AFCkey
5V
AGCout
28V
12V
LNB2
LNB1
LNB1
LNB2
SXT5000A
NOKIA
TUN100
1
2
3
4
5
6
7
8
9
10 11 12 13
SERVICE_POINT_1
1
BB_VID
FM_AUD
SCL
+29V_TUNER
LNB_POWER
+12V
EXT_BB_VID
SDA
+5V
GND
GND
GND
GND
GND
GND
10uF
16V
20%
C301
10uF
16V
IR1
20%
C306
2.7nF
10%
50V
X7R
C300
100nF
10%
50V
X7R
C303
100nF
10%
50V
X7R
C304
100nF
10%
50V
X7R
C305
1N4007
D300
1N4148
D304
1N4007
D301
1N4007
D302
33K
5%
R322
470R
5%
CFR
1/2W
R309
470R
5%
R304
10K
5%
R318
4K7
5%
R319
1R3
1/4W
2% MF
R300
4K7
5%
R302
2K2
5%
R301
33K
5%
R305
4K7
5%
R320
2.4K
1%
MF
1/4W
R311
845R
1%
MF
1/4W
R312
47K
5%
R307
10K
5%
R308
221R
1%
R313
10K
5%
R316
10K
5%
R315
22K
5%
R314
470R
5%
CFR
1/2W
R310
33K
5%
R324
10K
5%
R321
10K
5%
R323
4K7
5%
R325
Q300
BC857
Q301
BC847
Q306
BC847
Q302
BC847
Q303
BC847
Q304
BC847
Q305
ADJ
3
OUT
IN
LM317
IC300
1
2
3
SERVICE_POINT_2
1
+26V
+21V
LNB_SENSE
V+
H/V
LNB_POWER
22KHZ
+5V
LNB_OFF
GND
GND
GND
10uF
16V
20%
C530
1uF
50V
20%
C408
10uF
16V
20%
C409
10uF
16V
20%
C525
10nF
50V
10%
X7R
C531
10nF
10%
X7R
50V
C534
12pF
5%
COG
50V
C535
12pF
5%
COG
50V
C536
33pF
50V
5%
COG
C532
33pF
50V
5%
COG
C533
10nF
10%
50V
X7R
C452
1nF
10%
X7R
50V
C453
1N4148
D401
BAV99
D508
1
2
3
1N4148
D407
22K
5%
R415
4K7
5%
R412
270K
5%
R414
2K2
5%
R417
22R
5%
R459
470R
5%
R419
100R
5%
R420
5%
???
NF
R535
3K3
5%
R531
1K8
5%
R530
75R
5%
R532
75R
5%
R533
75R
5%
R534
270K
5%
R410
180K
5%
R411
10K
5%
R409
10K
5%
R416
10K
5%
R454
180K
5%
R457
2K2
5%
R460
470R
5%
R458
39uH
10%
LHL08
T.Y.
L501
15uH
5%
LAL04
T.Y.
L502
BC847
Q404
BC847
Q405
BC847
Q503
BC847
Q402
BC847
Q403
M35011
MITSUBISHI
IC501
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
17.73442MHz
HC49U
IQD
XT501
1
2
D505
BZX79C3V9
100R
5%
R546
BAV99
D406
1
2
3
SERVICE_POINT_6
1
OSD_RESET
MOD_VIDO
S1VIDO
TV_PIN8
TV_VIDO
OSD_CS
PK_SYNC
CSYNC
OSD_SCK
+12V
TV_16:9
NO_SYNC
OSD_SDA
AUX2_VIDO
+5V
+5V
GND
GND
1
Vdd
2
VSYNC
HSYNC
OSCIN
OSCOUT
P3
P2
P1
P0
Vss
CVIN
LECHA
CVIDEO
Vdd
AC
SDA
SCK
CS
OSC2
OSC1
( 0056A HA )
( 0056A J17L )
L
LNC-Umschaltung / LNC Switch-over
T
SAT-Tuner
O
OSD
S
Signalverarbeitung / Signal Processing
NRS
Sync Separator
B
Scart
P
Steuer-Prozessor / Control Processor
N
N
P
P
P
T
P
P
L
O
O
O
O
O
O
B
B
N
L
N
I
D
D
D
D
D
D
D
D
D
D
P
P
P
P
P
P
N
N
P
P
B
B
T
T
S
S
E
E
M
M
E
D
D
L
L
L
B
B
B
B
P
B
B
P
L
P
B
S
S
P
B
M
P
P
P
P
P
P
B
S
U
U
B
T
B
B
B
B
B
B
B
B
B
B
O
B
B
T
P
D
D
D
S
10
11
5
6
8
