Y/C/Audio/Ccd/Head Amp; Hi-Fi/Demodulator - Durabrand DBV4403 Service Manual

CP4001
1 EP/LP-CH2 (L)
2 EP/LP_COM
EP/LP-CH1 (R)
3
SP-CH2 (L)
4
SP_COM
CYL 5
SP-CH1 (R)
6
7 HF2 (L)
8 HF_COM
HF1 (R)
9
HF1
HI-FI/DEMODU
HF_COM
LATOR
HF2
CP4003
1 FE HEAD (HOT)
FE HEAD
2 FE HEAD (GND)
CP4002
AUDIO PB
6
AUDIO REC
5
HEAD
CTL+
4
AUDIO
CONTROL
3 CTL-
2 AE HEAD(-)
AE HEAD(+)
1
E-1
Y/C/AUDIO/CCD/HEAD AMP BLOCK DIAGRAM
X4001
100CT3R508
Q4012
BUFFER
Y/C/AUDIO/CCD/HEAD AMP IC
IC4001
LA71201M-N-MPB
50 49 41
VX01 PULL
TIMMING DRIVER
L
67
H.SW
REC
FM-EQ
H
66
KIL
AGC
AMP
C-LPF
H
P R
65
H.AMP
SW
GCA
72
L
R
P
FM
AGC
73
DELAY
H
PB
H.SW
FM-EQ
74
L
PB
DOUBLE
PHASE-EQ
LIM
9
REC AMP
7
8
AUTO BIAS
EQ
AMP
6
PB.EE
11 5 4 3
COIL, BIAS OSC
T4001
Q4005
5 BIAS CTL
2
6 3
Q4006
BIAS OSC
P. CON + 5V
4 1
Q4003
Q4001, Q4002
SW
AUDIO PB SW
Q4010
BUFFER
39
37
OUT
CCD CLAMP
DETAL
FM
WC NL
ENH
MOD DC EMPHA
V/I
CONV
P
Y-LPF
R R
YNR/
B-UP Main 3.58M
COMB
CONV BPF2
AMP
N.L.
P
ACC
DEEM
3.58M
AMP
BPF1
R
KIL
PB NC1
B.D. AMP
Y/C MIX
P
FM SUB
DEM
LPF
LINE
AMP R
V-AGC
LPF
R
P
P
R
ALC
ALC
DET
MUTE
SYNC
SEP
2 10 80 78 76 32 30
55
SERIAL
54
DECODER
53
CLAMP
22
P
21
VCA 36
CLAMP 34
H.AMP SW/
AUDIO
58
MUTE
1/2
C ROT
57
RF SW IN
FBC
ENV DET 59
Chara
INS. CONP 60
OUT
24
6dB
26
Y/C_CS
SYSCON/SERVO
IIC_DATA
IIC_CLK
H. AMP_SW
C. ROTARY
H. SW
AUDIO_MUTE-H
SYSCON/SERVO
ENV. DET
COMP
DUMMY_V. SYNC
OSD_V
FSC
TUNER
FRONT_V_IN
TUNER_V
TO_NORMAL_A

HI-FI/DEMODULATOR

FROM_NORMAL_A
V.REC_ST-H
SYSCON/SERVO
CTL+
CTL-
E-2