Grundig GV 27 Servicehandbuch Seite 28

Platinenabbildungen und Schaltpläne / Layout of PCBs and Circuit Diagrams
Blockschaltplan (FM-Ton) / Block Circuit Diagram (FM Sound)
Front end (FV)
12SW 5VASW
33V 5VA 5VASWB
SFS
(DC)
7721
2 6 A 12 26
26
1719
17 28
17
1701
27
7722
TUMOD HEF
4053
31
3
TDA 9813,9814 Demod.
24
5VASW
14 13 15,16
101
SSIF
1975
SDA SCL 11
(DC) (DC)
7700 36
4 29
SDA 1 50
(DC)
2 49
SCL
SAA 7284ZP
(DC)
NICAM (QNIC)
Socket PCB
1103/3 1171/3
AINFL
L
R
AINFR
1103/1 1171/1
98
1750/1 1710/1
L
R
1750/3 1710/3
1917
AIN1L
6
2 AIN1R
99
AOUT1L
3
1 AOUT1R
1918
AIN2L
6
2
AIN2R
89
AOUT2L
3
1 AOUT2R
Display Control (DC) Deck Electronics (DE)
HP2
(AF,HA)
SFS SDA SCL
5DV1 (FV) (FV,AF) (FV,AF)
5DV2
56
7201 7400
33 31 75 23 58
Display
Controller
15 26,43,57
4 - 11
GV 27 ..., GV 47 ..., GV 7...
FM-Audio (AF)
SDA SCL
(DC) (DC) 5VASW
5,5MHz
27
7780
1 20 18
5,74MHz
TDA 9840
91
10 7
15
STEREO 14 AF1
6,5MHz
BG
8 DEC.
L
R
6,25MHz 13
DK
14 11
AF2
1
9 10 16
2
5VD 12SW
AFE
102
10 6 5
L R
46 7,16
7
15
ANIL
NICAM
DEC.
8 9
ANIR
4
In/Out (IO)
3
4
5
6
7
8
LineSel
EXT2
9
10
OutSel
97
DecoderSel
EXT1
15
TUNER
16
OutSel
90
AFC
Mute
-
AMCO 11
mute
MTA SCL2
(AL) (AL)
IREV IRAF SDA2
Env-Sel
(AL) (HA) (AL)
L
OutSel
39
R
19 33 29 38 59 60
STEREO
TRIA/ALI
Deck
54
Controller
18,27
GRUNDIG Service
Platinenabbildungen und Schaltpläne / Layout of PCBs and Circuit Diagrams
SDA SCL
12VA 5VA
(DC) (DC)
35 38 41 42
IIC-Bus
SUPPLY
Control
InputSel
TUNER
Volume L/R
CINCH +15dB
EXT1
-48dB
EXT2
mute
EXT3
SAP
Lin.Audio Sel
L+R
L+R x Volume
L
R
L x Volume
TDA 9604H
FM-Audio Processing
OutputSel
STEREO 93
REC
LEFT
17
RIGHT
NORMAL
12SW SCL2(DE) SDA2(DE)
NOR+ST
NOR+L
76 73 63 64
A-VCC
NOR+R
mute Serial-Bus
Control
ALC Line
REC
PB
Level
+15dB
19 77
0dB
mute
Rec-Amp
79
92
EQ-Amp
REC
A-GND
2 11 10
3610
4 - 12
Reference AL ....................4-25 FV....................4-21 IO.....................4-27
Oscillograms ....4-38 DC ...................4-35 FM ...................4-24 OS ...................4-24
AF....................4-29 DE ...................4-33 HA ...................4-30 PS....................4-31
Head Amplifier (HA) IRAF
(DE)
HP2 TRIA/ALI
5VASW
(DE) (DE)
7080
40 39 1
VCC
STV 5712
Head Ampl.
REC
FMAR
36 11
REC
96
FMAP
8
REC
9 6,16 15
HP2(DE)
37
95
PB
Head Drum
MTA(DE) 12SW IREV(DE)
7007
70
MUTE
LA71525M
7604
Linear-Aud.
Processing 7609
Erase
1961/5 TD1/3
Mute
Osc.
Audio Erase
-
Head
mute
1961/4 TD1/4
BIAS
1962/1 TD2/2
3618
38
Main Erase
Head
1962/2 TD2/1
1
1961/1 TD1/7
PB
REC/PB
7
Head
5 1961/3 1961/3 TD1/5
PB
HD 6
REC 7600
SW
7601
7602
Linear-Audio (AL)
GV 27 ..., GV 47 ..., GV 7...
QMB ................4-15 VS....................4-25
QNIC ...............4-36 VS-S ................4-28
VP....................4-24
7085
1
10
1
2,4 14
Tape Deck
GRUNDIG Service