Audio - Grundig GV 94 HiFi Bedienungsanleitung

GV 94
Blockschaltplan / Block Circuit Diagram – Audio
MECHANISM BLOCK
REC/PB

AUDIO

R/P HEAD
Q2002‡Q2005
BIA S
AUDIO
E HEAD
FULL
E HEAD
Blockschaltplan / Block Circuit Diagram – IN/OUT
1
3
4
FSS OUT
CONTROL
6
CONTROL
12
CONTROL
14
CLAMP
16
CLAMP
18
CLAMP
IC861
INTERFACE
Q8604
PB L
Q8605
EURO AV BLANKING
VIDEO IN
EURO AV, VIDEO OUT
CH+, VIDEO IN
EURO AV AUDIO IN
20 18 16 14 12 10 8 6 4 2
21 19 17 15 13 11 9 7 5 3 1
CN872
CN871
AUDIO OUT
RGB(BLUE)
RGB(GREEN)
RGB(RED)
GRUNDIG Service
(AN3650FBP)
TO DECODER(TN-3,6)
HiFi AUDIO
16
TU R
TU L
PINK
NOISE
8 REDUCTION
CN871
9
REC
10
AV L IN
AV R IN PB
AV L IN
AV R IN
CN872 13
14
15
REC
1
TU NOR AD PINK
NOISE
T O SY -A
PB
REDUCTION
<GV94NICAM ONL Y> 63
64
61
YCA MUTE
T O SY -A
(1/2) LA71590M LINER AUDIO
Q2371
Q2371
MUTE
10
76 REC
96
78 LINE A MUTE
ALC MUTE
AMP
80
PB
97
ALC
100
DET
98
EQ AUT O REC
T2001
AMP BIA S AMP
1
70KHz
BIAS
99 6
OSC 4 7
&
BIA S
LEVEL I2C DATA
CONT
CONTROL
Q2001
TO SY-A
A MUTE
NORM A CTL
VD IN TU
36
AD OUT (L)
35
33
AD OUT (R)
32
26
CH+ CLK
SERIAL
25
CONTROL
CH+ DATA
23
6dB
22
BUF
21
VD IN
BUF
6dB
20
19
CLAMP VD OUT
AD IN (AV1 L)
AD IN (AV1 R)
AD IN (AV2 R)
AD IN (AV2 L)
CONTROL
FSS IN
CH+ (SYSCON IC301)
DECODER
AUDIO IN
20 18 16 14 12 10 8 6 4 2
21 19 17 15 13 11 9 7 5 3 1
DEC AOUT (R)
DEC AOUT (L)
GV 94
17
18
REC R
RECL
R
AUDIO REC RF
VCO
LIMIT LPF
P
PB TRAP
LPF
PB R
1.7MHZ
SW NOISE LPF PC
BPF
PB TRAP
LPF
1.3MHZ
SW NOISE LPF PC
BPF
PB L
PB
REC
AUDIO REC RF
VCO
LIMIT LPF
REC
RECL
35 34 33
62
45
FSC FSC
42 CLOCK
I2C CLK
DATA
43
SWITCH
CONTROL
MUTE
CONTROL
36
IC301
84
System Controller
17 18 TC-A
7
IC141 16
6 VPS / PDC
Q1401
DATA
CLK
24 23 Q3062/3065
29 VD (TO MCOM)
38 VD IN (AV1)
36
34
IC101
AD OUT (CV)
76
80 AD IN (AV1)
78
AD OUT
96
62
AF ENV
28
GRUNDIG Service
Reference
Oscillograms....4-14
AD-A................4-27
CP-1 ................4-11
MC-A ...............4-19
37
PB ON
DET
REC
CURRENT 21
MIX AMP AFM CH1
HEAD
AGC AMP 24
30 29
AFM CH2
22
HEAD
PB
Q3204
REC H
Q3205
LIM
SWD 5V
LINER 28
AF ENV
SW
27
HOLD
TIMING AF SWP
A OUT
T O TUNER
JK231
L OUT
57
L OUT
AD OUT L
T O CN871
AD MUTE
59
MIX
Q2303
Q2302
60
ALC
53
R OUT
AD OUT R
T O CN871
JK231
R OUT
Q2301
78
OSD
AD MUTE
95
FSS IN
49 47
VD (FR MCOM)
25 20
14
26
32
Q1012
VD OUT (AV) 19
35
21
16
Q1001
VD (CV)
3 5
4
6 24 12 11
TU / IF / DEMOD
Modu-
lator (Audio & Video)
23
2 22
18
SIF IN 4 1 2
36
Stereo Decoder 3
33 1
TN-3/6
9 10 CN631
61 59 8 R 13 L 53 57 43 42
9 AD IN (AV1 R)
14 AD IN (AV1 L)
10 AD IN (AV2 R)
Head Amplifier FM Process I/O Selector
15 AD IN (AV2 L)
63 DEC AOUT (R)
64 DEC AOUT (L)
IC231
PW-A ...............4-17 TM-A................4-23
TN-3 ................4-31
SY-A ................4-18
TB-1.................4-29 TN-6 ................4-32
TC-A ................4-22 VA-A ................4-25
TM-1 ................4-22
Audio
Out
19
20
1
3
2
6
8
19
20
1
3
2
6
FSS IN 8
IC301/95