Synoptique Des Circuits Imprimés - Grundig GV 29 EURO Manuel De Service

Circuits imprimés et schémas électriques / Layout of PCBs and Circuit Diagrams
Synoptique des circuits imprimés
Block Circuit Diagram – Video/Chroma
IC101
(LA71590M)
HEAD DRUM
82
83
CH2
84
LP HEAD
CH1
85
<GV9300EURO ONLY>
HEAD AMP
RF PROCESSING
88
CH2
89
SP HEAD
CH1 90
91
REC
FM AGC
DET
93
ENV
ENV DET
DET
TO SY-A
94
ENV SW
TP182
74
BUF
PB ENV
Q1007
TP183
RF SWP
<GV29EURO>
<GV9300EURO> ROTARY
4 - 7
GV 29 EURO, GV 9300 EURO
Q1006
BUF
4.43MHz
X1002
73 72 71 70 69 67 66 64 63
REC
VXO2 VXO1
APC
DET
SECAM DET
PAL M DET
KIL
DET
R P
BPF
NAP
KIL
KIL
BD
P
C-LPF
R
ACC
DET
R
CONV
REC B-UP
ACC
FM AGC P AMP
BPF2
+
SUB
LPF
REC
FM AGC
COMP
OUT
PB_FM FM FM DETAIL
AGC MOD DEM EMPHA
PB_PM W/D DOUBLE
EQ. CLIP LIM
10 11 17 18
Q1002
EQ AMP
Q1013
REC H
GRUNDIG Service
Circuits imprimés et schémas électriques / Layout of PCBs and Circuit Diagrams
Q1005
BUF
61 59 57 54 52 51
C COMB
COMB
AMP
CCD
LPF CCD
DELAY PROCESSING
BPF1
Y_DELAY
P R
CLAMP
NL
Y.N.R
DE_EMP
P
PIC-CTL
R
Y-LPF
ANR
SYNC
PB_Y
DET
PB_C
Y/C
MIX
P R
R P
R P
1/2
P
FBC
R
II PLL
P
SYNC
R SEP
R
P
CLAMP
SERIAL Chara 6DB
DECODER IMS AMP
20 21 22 23 24 26 28
BUF
Q1003
4 - 8
Reference
Oscillograms ....4-14
CP-1 ................4-11
PW-A ...............4-23
FSC
49
CLK
46
45
43
DELAYED
Q1004
SIGNAL 41
BUF
38
VD IN(AV1)
TO TB-1 IC861
4.3M
BELL
36 FILT
BUFFER
Q1006
17 21
PB MUTE
34
R
V IN 15
4.43M
AGC
BPF BELL
TC2
P
LIM
1/4
2.2M
32
BPF
R
1.1M
BELL
31
BPF
P
AGC
AGC
DET
16
PBL
BIAS
PBH
Q1016
13 8 9
BELL
FILT
PB_EQ
1.1M
CTL
29 30
REC H
ON SCREEN
Q1012 Q1001
DISPLAY
49,50 47
FILTER VIN VOUT V OUT
TO TB-1 IC861
Q1021
IC301 BUF. BUF.
Q1075
Q1077
VD TO IC141
Q1401 (VPS/PDC)
C SYNC
V LOCK P
I2C DATA
I2C CLK
GV 29 EURO, GV 9300 EURO
SY-A ................4-19 TM-A................4-18
TB-1.................4-24 VA-A ................4-21
TM-1 ................4-18
TN-A ................4-21
C SYNC
TO IC101PIN28
20 27
SYNC
BIAS 2
fsc
1.1M
OSC
26
SECAM
SECAM DET
DET
TO SY-A
4.3M
SWD 5V
BPF
Q1201
4.43M
OSC
1
SECAM
5V
SECAM L
TO SY-A
REC
IC121
MUTE
LA7358
11 SECAM COLOR
PROCESS
Q1003
BUFFER
TO SY-A
GRUNDIG Service