Durabrand DBV4403, Service Manual

Page: 41 / 50

A B C D E F G H
A B C D E F G H
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1
3
4
5
6
7
8
2
1
3
4
5
6
7
8
IC5501
AN3663FBP
HI-FI/AUDIO/HEAD AMP/DEM IC
1 10 11 12 13 14 15 16
17
18
19
2
20
21
22
23
24
25
26
27
28
29
3
30
31
32
33 34 35 36 37 38 39
4
40 41 42 43 44 45 46 47 48
49
5
50
51
52
53
54
55
56
57
58
59
6
60
61
62
63
64
7 8 9
D5501
1SS133
DURING PLAYBACK
MEASURED WITH THE DIGITAL TESTER
NOTE:
THE DC VOLTAGE AT EACH PART WAS
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
C5512
10 16V KA
C5531
100
6.3V
KA
C5511
22 6.3V KA
C5510
10 16V KA
C5552
22 16V KA
C5516
22 16V KA
C5521
0.22 50V KA
C5513
1 50V KA
C5509
2.2 50V KA
C5537
10
16V
KA
C5529
10
16V
KA
C5505_1 0.1
F
C5540 0.015 B
C5549 0.01 F
C5543
0.01 F
C5545 0.1 F
C5544
0.01 F
C5546 0.015 B
C5514
0.1 F
C5542 0.1 F
C5541 0.01 B
C5507
0.1 F
C5503
0.022 B
C5553 0.001
Y
C5506
0.1 F
C5530
0.01
F
C5504
0.1 F
C5508
0.1 F
C5515
0.022
B
C5524
0.1
B
C5528
680P
B
C5551
680P
B
R5519
3.3K 1/4W
R5503
1K
R5502
330
R5510
27K
R5513
2.2M
R5507
47K
R5514
47K
R5508
6.8K
R5516
6.8K
C5548 10 16V KA
C5547 10 16V KA
C5517
0.22 50V KA
C5533
1
50V
KA
C5534
33
6.3V
KA
C5536
10
16V
KA
C5538
10
16V
KA
C5539
33
6.3V
KA
C5526
10
16V
KA
C5532
10
16V
KA
C5523
4.7
25V
KA
C5502
4.7
25V
KA
C5501
10 16V KA
C5555
47 16V YK
C5518
3.3
50V
KA
C5525
10
16V
KA
C5527
10
16V
KA
TP5501
HIFI ENV.
W817
L5502
100uH
L5501
100uH
L5504
22uH
AUDIO SIGNAL(PB)
AUDIO SIGNAL(REC)
FSC
IIC_CLK
IIC_DATA
TUNER_A
AUDIO_MUTE-H
+5V
FRONT_A_IN-R
FRONT_A_IN-L
AUDIO_OUT-R
AUDIO_OUT-L
RF_CONV_A.OUT
TUNER_A
+5V
V.REC_ST-H
AUDIO_OUT-R HIFI_ENV.DET
HIFI_H.SW
ST_SELECT
AUDIO_OUT-L
HF2
+12V
GND
RF_CONV_A.OUT
HF1
HF_COM
FSC
TO_NORMAL_A
FROM_NORMAL_A
TO_NORMAL_A
FROM_NORMAL_A
+5V
+12V
GND
V.REC_ST-H
HIFI_ENV.DET
HIFI_H.SW
AUDIO_MUTE-H
IIC_CLK
IIC_DATA
ST_SELECT
FRONT_A_IN-R FRONT_A_IN-L
G-12 G-11
NC
(SYSCON PCB)
HI-FI/DEMODULATOR SCHEMATIC DIAGRAM
FROM/TO SYSCON/SERVO
FROM/TO TUNER
FROM/TO Y/C/AUDIO/CCD/HEAD AMP
FROM POWER
PCB010
VMA224
NC NC
0.5
0
0.6
2.2
2.3
2.4
1.0
4.3
11.0
4.3
1.2
0
2.3
4.2
2.5
4.9
2.7
3.4
2.2 0 3.5 2.1 2.3 4.7
4.7
0 4.9
0
0 1.6
0
2.4 0.7 2.4
2.4
2.1
1.8
1.8
1.8
2.5
4.9
0.6
0
0.7
0
0
2.4
2.4
0.7
2.4 0 0 2.2 2.0 0 0 0 2.1 2.4 2.2 0 2.3
0
2.3
NC NC
NC
NC
DEM_BLK
INPUT_SW(R)
INPUT_SW(L)
VREF1
LOGIC
MUTE VCO-F0
ADJ
LOGIC
ZZ-PROM
CTL
PNR RCH
SW NOISE
PC
LCH BPF
RCH BPF
PC PB LPF
PB LPF
AUDIO
LIMIT
AUDIO
LIMIT
FM UM
SW NOISE
RCH
VCO
REC LPF
LCH VCO
MIX
REC LPF
DET
HPF
NOISE
DET
SW15
SW11
H
L
SW13
SW14
SW10
SW4
L
R
SW17
SW19
MUTE
R
L
L
L
SW18
NORMAL
MIX
HIFI
BS
BS
LINER
SW
HOLD
TIMING
S/N
S/N
REC PB
SW12
SW9
SW21
HA1
HA2
AMP
CURR
FROM 1PIN
FROM 3PIN
R
R
SW16
MIX
HIFI
AGC
+
-
-
INPUT
VCA
STEREO
FILTER
MATRIX
RFC
DET
AMP
PILOT
DET
SL
PLL
L.R
DEMOD
SAP
DEMOD
LPF
(L.R)/SAP
SWITCH
L
MIX
R
SW22
SAP
75uS
DE-EMPH
MUTE
NOISE REDUCTION
DBX
USA
PNR LCH
SW2
AMP
NC
AN3663FBP
16