Durabrand DBV4403, Руководство по обслуживанию

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