Standard Sound (Al) - Grundig GV 8000 GB Service Manual

Platinenabbildungen und Schaltpläne / Layout of PCBs and Circuit Diagrams
Chassisplatte / Chassis Board – Video/Chroma (VS), Standardton / Standard Sound (AL)
1 2 3 4 5
A
Record
AINFL
AINFL
Luminance
AINFR
Chrominance
AINFR
Standard Sound
AIN1L
AIN1L
AIN1R
B AIN1R
AIN2L
AIN2L
3134
AIN2R
AIN2R
1710 1750 220E
AOUT1L 1 1
AOUT1L
C
2 2
AOUT1R
AOUT1R
GNDAIO
3 3
AOUT2L
AOUT2L
3135
1909
AOUT2R
1
220E
AOUT2R
2 5130
D AMLR
AMLR
for cinchout rear only
AMLP
AMLP
AF,FV
VFV
VFV
E
VMOD
VMOD
AF1
AF1
VFV
VFV
F
VBS CROT
VBS
2FSC
CSCP
2FSC
VOUT
VOUT
G
VSB
VSB
CSYNC
CSYNC
MTA
VS_S,DE,HA
VREC
H
VREC
AIN1
VS_S,VPS/PDC
CSP
AMLR
CSP
VS_S
FMPV
for 2 EURO-AV or stereo only
FMPV
HA 3528
AIN2 2519
I
47k 100n 25V
AF1 3027 2520
CROT
CROT
27k 100n
25V
FFP
FFP
MONO only
CTL1 GNDAL
J CTL1 GNDAL
1SC 2SC
CTL2
CTL2
3028 5k6 3k3
8SC1
AMLP
8SC1
CSCP
CSCP
K
7V
FMRV
FMRV
HA
SCL
SCL 7V
GNDAL
7600
6,3V
-22V
SDA BC856B
SDA 7V
L CKDET
CKDET
3V
-22V
0V
SDA2 0,7V
SDA2
3602
7601
SCL2 BC846B
4k7
SCL2
-17V
0V
ISWS
M ISWS
3612
7602
MTA BC846B
2k2
MTA
-22V
8SC2 (LIN.Audio PB SWITCH)
0,7V
8SC2
12SW
IREV GNDAL GNDAL
3625
IREV
N
10,4V
33E
10,5V 0,3V
7604
12V BC328-40
0,5V
12VA
9,8V 0,3V
GNDEO
(Erase-Oscillator-SWITCH)
12V
12SW
12VA
7609
0,1V
0V
-28V BC817-40
O
0V
12V (Erase-Oscillator)
4,3V
7603
-28V
0V
BC847B
5VASW
5VASW
12SW
GNDEO
12SW
P
5VA
5VA
1 2 3 4 5
23
GV 8000..., GV 8300..., GV 8400...
6 7 8 9 10
Playback
Luminance
Chrominance
Standard Sound
1911 CINCH LEFT
2
9381C
1
1912 CINCH RIGHT
2
9381B
6135
1
BZX79-C12
3V 5V 0V 2,1V
64 63 62
ACK
OUT
3023
1,8V 65 PQ1 KIL
DET
SERIAL
220k
not used DECODER
0,6V 66
C-ROT
IN
5VASW
AGC
0V 67
CSCP_IN
AGC
PAL-PULSE
68
2,1V 69 NC-CTL
7007
AGC
0V 70
MUTE
LA71525M
CTL
0V (VIDEO & LIN. Audioprocessor)
3,3V 71
1V
AGC
AGC 0V
72
12SW 9013
IN1
3,4V 73
2
ALC
IN3
2049 3,4V 74
VREF
47u
GNDAL
16V
GNDAL
3,4V 75
ALC
DET
7V
76
A-VCC
2646
39
470n 16V
2652 3,4V 77
LINE
MUTE
AMP
10u
16V
3034
0V 78
15k
GNDAL
REC
3,4V
2647
79
GNDAL GNDAL
100n
25V
2657 3,4V 80
5601
REC
A-GND
3600
10m AMP
15n
50V
22k GNDAL
GNDAL 1 2 3
3,5V 0V 0V
3655
2656
39n
50V 680E
GNDAL
5604
GNDAL
3u3
HEAD
9034
BIAS
3618
3604 2059
9073
BIAS2
3606
100k IC 22k 1u 50V 5605
47E
6
38 GNDEO
3638
36
10E GNDAL
4
3
2
1
TD1
GNDEO GNDEO GNDEO
6 7 8 9 10
Platinenabbildungen und Schaltpläne / Layout of PCBs and Circuit Diagrams
Reference
Oscillograms ....4-38
ACG4.1...............29
11 12 13 14 15
16
5VASW
2048
2p7
18
1000
2029
10n
4,433619MHz
50V
1,5V 3,3V 3,9V 3V 3,9V 2,9V
3V 2,1V 5,1V
1,4V 2,7V 4,2V
61 60 59 58 57 56 55 54 53 52 51 50 49
BGP RL 2FSC/ C-GND
PB-H
OUT AMP
REC
VXO1
APC
DET
LPF VCO INV SLD
COMB
PB AFC
APC DET
TH
DET
P
PB P
BGA-A
R
PB
R,A
B BGA-B
N.L.
DE-EM
P
DHP
BPF1
NC
R
PIC
CNC
SUB P R CTL
CONV
REC Y C
BPF2
BGA MIX
SUB
BPF
ACC
DET
R
MAIN
ACC
AMP CONV
P
MAIN
MOD
EMPH
P
R P
VREF FM
REC
AGC
P SQ
C-LPF
EQ R
PB-EQ
AMP
KIL
HD BAL
PB- LP,SP
SW TC1 PM
4 5 6 7 8 9 10 11 12 13 14 15 16
7V 3,6V 3V 4,5V
3,4V
3,4V
2,6V
0,2V 3,3V 3,3V 3,3V 3,3V 2,3V 1,6V 0V 3,4V 1,5V
70
40
3609
8k2
3610
BIAS1
2k2
for stereo only 72
for 2/0 6k8
2603
10n 5VASW
50V
3607
390k
7001
5VASW MMUN2112LT1
(SWITCH)
9154
GNDAL GNDAL
GNDAL
GNDAL for 4/2 only
3000 3001
1k 1k
7021
TD2
BC857B
(SWITCH)
GNDAL
11 12 13 14 15
GRUNDIG Service 24
AF..............27, 4-29 DE .............28, 4-33 HA .............27, 4-30 PS..............28, 4-31 VP....................4-24
AL ..............23, 4-25 FV..............26, 4-21 IO...............25, 4-27 QMB ...................17 VS..............23,
DC ...................4-35 FM ...................4-24 OS ...................4-24 QNIC ...............4-36 VS-S ..........28,
16 17 18 19 20 21
5VASW
1,9V 0V 0,9V 2,4V
14 13 12 11 10
GND NT CLK
SAMPLE PHASE
AND HOLD
COMP
OUTPUT AMP
CLOCK
15
WAVE
DL
SHAPER CLOCK
DRIVER
DL
AUTO BIAS
DL
CIRCUIT 2 DL
CLOCK
CLOCK 7003
SWITCHING LC89980M
CIRCUIT
(DELAY-Line)
AUTO BIAS SYNC TIP
CENTER CENTER
BIAS CIRCUIT 1 BIAS CLAMP
NC
VCC
1 2 3 4 5
2,5V 2,5V 2,2V
3010
1k
2028
2027
10n
2,6V
50V
10n
2V
7008
50V
BC857B
20
0V
2V 1,9V 0V 5VASW
5,14V
5000
48 47 46 45 44 43 42 41
10u
C-VCC PQ2 NTSC
VCC2
BPF 19
P
40 3V
2021
YNR CLP
R 10u
NPP
16V
39 3V 2020
LPF
3037
10u 16V
KIL
B.D.
38 1,8V not used
VIDEO
AMP
P R
14
0,5V
37
36 5,1V
Y-VCC
1/2
3,1V
35
VIDEO
AGC
2,3V 60
34 0,2V
QV/QH 33
0,4V
INS
1,8V for 1 EURO-AV only
P 32 0,1V 2521
SYNC
R SEPA
100n
25V
31 4,1V 2017
3
FBC
R 2
10u
1,8V
1 16V
2015
30 2,3V
P
100n
2V
P
25V
2014
2,5V
R 29
N.L. DETAIL
EMPH EMPH 0u47
AGC
2,2V
50V
DET
28 0V 100n
2022
75
25V
27
Y-GND
DOUBLE
REC
LIMIT
2012
26 3,1V
EQ
CLP
4u7
DEMOD 74 25V
R 25 1,8V
SUB
LPF
P
REC
HIGH MAIN
OUT PEAKING EMPH
17 18 19 20 21 22 23 24
4,8V 0V 2,4V 2,4V
1,9V
71
1,6V
2,6V 2,7V 0,2V 0,3V
73
5VASW
7011
BC847B
5VASW
2036 3036
5036
56u
82p 470E
5%
50V
3004
2007 7006
5004
7004
BC847B
47u
BFS19
39p 5% 680E (Buffer)
for mstd,mstds,
7000
secdk,secdks,secdkns; (Buffer) 50V
BFS19
(Phase-Shift)
2026
5026
3003
100u
220p
5%
680E
50V
3011 2066
2k2 10n
50V
16 17 18 19 20 21
GV 8000..., GV 8300..., GV 8400...
Seiten "4-..." – siehe Basis-Service-Manual
Pages "4-..." – see Main Service Manual
4-25
4-28
22 23 24 25
9.5V
9 8
1/3 VCO
TIMING
GENERATOR
RD
VOLT
GEN
SAMPLE
AND HOLD
OUTPUT AMP
6 7
1,5V
1,5V
7005
BC857B
(Buffer)
2,1V
76
VSB
VBS
CSYNC
VREC
FFP
VFV
7002
BC847B
(Deemphasis)
7009
MMUN2112LT1
AINFR
AINFL
VFR
12VA
GNDVSIO
GNDAIO
for Cinch-IN front only
SOCKET BOARD
ACG4.1 / QBOE1 / QBOG1
22 23 24 25
GRUNDIG Service