Kenwood HM-437WM Service Manual page 18

Compact hi-fi component system
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A
B
CD
CN601
PICKUP
V-CEN
1
1
COM
1
2
2
+B
R615
82K
E
3
3
R616
180K
D
4
4
R617
A
180K
5
5
R618
B
180K
6
6
R619
180K
C
7
7
F
R620
8
8
GND
82K
9
9
L611
R610
Q605
38
10uH
LD
10
10
10
37
R623
2
R624
R621
33K
1K
100
VR
31
11
11
R612
30
PD
0
12
12
F+
13
13
F+
T+
14
14
T+
T-
15
15
T-
F-
16
16
F-
+8.5V
CD
MECHANISM
CN602
GND
6
6
SLT
5
5
FM+
4
4
FM+
FM-
IC603
M
3
3
FM-
DM-
2
2
DM-
DM+
3
M
1
1
DM+
C618
470u16
+
C6106
0.1
R603
+8.5V
22
4
+8.5V
+B
+B
C682
47u16
+
5
C685
0.1
1
+B
VDDP
R688
2
RST
4.7K
R681
3
STANBY
10K
4
C683
MICS
0.1
5
MILP
6
6
MIDIO
7
7
MICK
8
MIACK/AD16
9
+B
VDDT
10
VSS
11
11
SDO0/L
12
BCKO/L
13
LRCO/L
14
14
SDI0
6
15
15
BCKIA
16
16
LRCKIB
7
C
D
L609
+B
+B
47uH
IC602
24
1
GND
VCC
23
RFN
22
RFO
2
C626
FNI
C624
R627
R626
R628
82P
21
AGCIN
20
0.1
220
10K
1K
C614
3
RFGC
FPI
4
19
0.047
TPI
RFGO
5
C625
C627
18
TNI
RFRPIN
6
17
0.1
4700P
MOI
R633
R634
RFRP
28
7
47K
470K
R629
17
LDO
16
FEN
8
18
15
39K
SEL
FEO
29
9
14
TEBC
VRO
10
TEN
C632
19
C633
47u16
0.1
11
20
TEO
+
12
13
R631
C634
21
RFDC
GVSW
3.3K
0.01
22
C619
C635
23
0.1
2700P
24
25
26
R637
C663
10K
27
0.1
28
28
29
29
30
30
31
31
C639
32
0.033
C6103
0.1
C659
6.8K
L606
470uH
+B
+B
Q607
+B
+B
+B
C690
0.1
C689
C6100
0.1
0.1
L614
R606
48
47uH
3.3K
PO5
47
PO6
46
C6119
PO7
45
0.1
AD8
44
AD9
C688
43
0.1
AD10
42
VDDT
41
SRMSTB
L607
47uH
40
VDDM
IC604
39
C687
PO8
38
0.1
PO9
37
CCE/PO10
36
BUCK/REQ/PO11
35
SDO3/L
34
PO12
33
SDO2/L
+B
E
F
+B
64
VDD5
TMAX
LPFN
63
LPF0
RST
PVREF
VCOF
62
AVSS3
CCE
61
SLCO
BUCK
60
BUS3
RFI
IC601
59
BUS2
AVDD3-1
58
BUS1
RFCT
57
BUS0
56
VSS5
RFZI
55
ZDET
54
DVSS3-2
RFRP
53
LO
FEI
52
DVR
SBAD
51
DVDD3
TEI
50
RO
TEZI
49
DVSS3-1
X601
16.9344MHz
R655
1M
+B
+B
+5V
15
+8.5V
16
14
11
C676
R658
22u16
2.2K
+
IC605
1
8
BICK
RCH
2
7
C675
WS
NC
3
6
22u16
R661
DIN
LCH
+
+5V
4
2.2K
GND
5
R657
VDD
R630
Q604
100
15
R601
+B
Q602
68
+8.5V
C615
0.1
19
G
H
CAUTION: For continued safety, replace safety critical com-
ponents only with manufacturer's recommended parts (refer
to parts list).
continued protection against risk of fire, replace only with
same type and rating fuse(s). To reduce the risk of electric
shock, leakage-current or resistance measurements shall be
carried out (exposed parts are acceptably insulated from the
supply circuit) before the appliance is returned to the cus-
tomer.
IC601
:
TC94A14FA
IC602
:
TA2157FN
IC603
:
MM1669XH
IC604
:
TC94A34FG
IC605
:
PT8211
The DC voltage is an actual reading measured with a high
IC607
:
SC1380LS
impedance type voltmeter with no signal input. The mea-
R608
Q602,604
:
8050D
4.7K
surement value may vary depending on the measuring
Q605
:
8550
Q607
:
8550D
instruments used or on the product.
ZD601
:
MTZJ5.6(B)
ZD603
:
MTZJ2.2B
62
61
60
SIGNAL LINE
59
GND LINE
58
+B
B LINE
57
CN606
1
DRST
R644 1K
2 RES
R680
R645 1K
22
62
3
CCE
+B
R646 1K
61
4
BUCK
R647 1K
DISPLAY-
57
5
BUS0
CN105
R648 1K
58
6
BUS1
Y-7
R649 1K
3/3
59
7 BUS2
R650 1K
60
8
BUS3
9
SRMSTB
10
GND
+5V
11
+5V
+B
+5V
R651
1K
+B
R686
2.2K
IC607
R609
(2/2)
C6112
CN604
3.3K
2
8
1u50
1
MAIN-
R675
3
1
Rch
CN602
+
4
2.2K
C6113
2
AGND
R-6
R684
1u50
2/3
3
Lch
+
2.2K
IC607
R683
(1/2)
3.3K
6
7
5
CN605
L601A
R687
2.2K
3
8.5V
MAIN-
2
DGND
CN805
+B
2/3
R-4
+8.5V
C600
R690
1 MGND
100P
10
CN603
J654 1K
36
1
DREQ
DISPLAY-
J662 1K
CN106
6
2
SDA
J661 1K
3/3
U-6
7
3
SCL
HM-437WM (1/3)
I
J
RXD-M47WM/LS-M47WM
indicates safety critical components. For
CD
20

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