Grundig GV 94 HiFi Bedienungsanleitung Seite 28

Platinenabbildungen und Schaltpl
Blockschaltplan / Block Circuit Diagram – Video/Chroma
IC101
(LA71590M)
HEAD DRUM
82
CH1
83
LP HEAD
CH2 84
85
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
74
BUF
Q1007
YCA AD MUTE
ROTARY
TO SY -A RF SWP
H AMP SW (SP/LP)
4 - 7
4.43MHz
X1002
73 72 71 70 69 67 66
REC
VXO2
APC
DET
SECAM DET
P AL M DET
KIL
DET
R P
BPF
NAP
KIL
KIL
BD
P
C-LPF
R
R
CONV
REC B-UP
FM AGC AMP
P
BPF2
+
SUB
LPF
REC
FM AGC
COMP
OUT
PB_FM FM FM
AGC MOD DEM
W/D DOUBLE
CLIP LIM
PB_PM
EQ .
10 11 17
Q1002
EQ AMP
Q1013
REC H
Platinenabbildungen und Schaltpl
Q1006
BUF
Q1005
BUF
64 63 61 59 57 54 52 51
VXO1
C COMB
COMB
AMP
CCD
LPF
CCD
DELAY PROCESSING
BPF1
P R
CLAMP
ACC
NL
DET R P
Y .N.R
DE_EMP
P
ACC
PIC-CTL
R Y -LPF
ANR
SYNC
PB_Y
PB_C Y/C
MIX
P
R
R P
DETAIL
R P
EMPHA
1/2
P
FBC
R
II PLL
P
SYNC
SEP
R
R
P
CLAMP
SERIAL Chara
DECODER IMS
18 20 21 22 23 24 26 28
BUF
Q1003
4 - 8
Reference
PW-A ...............4-17
Oscillograms....4-14
SY-A ................4-18
AD-A................4-27 TB-1.................4-29
CP-1 ................4-11
TC-A ................4-22
MC-A ...............4-19
TM-1 ................4-22
FSC
49
46
45
Y_DELAY
43
DELAYED
Q1004
SIGNAL
41
BUF
38
DET
VD IN(A V1)
TO CN871
36
34
AGC
T C2
32
31
6DB
AMP
PB_EQ
CTL
29 30
REC H
ON SCREEN
DISPLAY
Q1012
49,50 47
BUF VIN VOUT
Q3061
BUF .
Q3062
IC301
Q3065
C SYNC
V LOCK P
TO SY-A
I2C DATA
I2C CLK
TM-A................4-23
TN-3 ................4-31
TN-6 ................4-32
VA-A ................4-25
VD OUT
TO CN871
Q1001
VD OUT
TO TUNER
BUF .
V1-17971/SE4HN-EVGR