Schematic Diagram - Kenwood RXD-M32MD Service Manual

A B
Q Q
3 7 6 3 1 5 1 5 0
F0554AW-A (LOADING PWB)
1
R1930
390
WRITE
PRO
CN1931 CW1931
SW1930
LOADING
5
R1932
MINF
4
DISC ID
R1931 120 GND
3
SW1931 580 LD-
2
LD+
1
LOAD
SW1932
REC
SW1933
REC HEAD
2
PLAY
SW1934
LOD
M
PICK-UP
CN1101
SW
28 28
+2.8V
27 27
B
26 26
3 LVVOUT
4 25 25
APCOUT
3 24 24
1 8 LDVCC
VCC 23 23
DGND
22 22
2
7 DGND
GND 21 21
6 LDON
20 20
3 LDVAR
3 19 19
4 5
A
4
18 18
COM
17 17
I/V RF1
16 16
T E
L 1 3 9 4 2 2 9 6 5 1 3
F
15 15
E
14 14
I/V RF3
4
13 13
I/V RF4
12 12
VCC
11 11
AGND
10 10
MP/R
9 9
I/V RF2
8 8
APCIN
7 7
DGND
6 6
LVVIN
5 5
F.COIL F-
4 4
T+
3 3
F+
2 2
T.COIL T-
1 1
5
F0554AW-B
(MECHA PWB)
CN1932 CW1932 CN1402
LEAD IN LEAD IN
LEAD IN 1 1
2 2
SW1938
SLD
SLD+ SLD+
3 3
SLD- SLD-
M
4 4
SPN
SP- SP-
M
5 5
6
SP+ SP+
6 6
CW1502 L1554
CN1502
0.47uH
CDDATA 4 4
w w w
L1553 0
GND 3 3
L1552
0.47uH
CDBCK 2 2
L1551
1 1
CDLRCK
0.47uH
CAUTION: For continued safety, replace safety critical components only with manufacturer's recommended parts (refer to parts
list). indicates safety critical components. For 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
7
are acceptably insulated from the supply circuit) before the appliance is returned to the customer.
C D
MD MECHANISM (MDM-99D)
L1300
47uH
LOADING
IC1301
MINF
C1302 C1303
1 8 10 1
GND
D1 D2
7
2
TRY-
S1 S2
3 6
TRY+
S1 S2
4 5
G1 G2
D1300
1
R1301
10
IC1302
CW1903 C1301
0.027
1
5
1 1 D1
G1 4
HEAD
4 R1300
DRIVER
S
3 8.2
2
G2 IC1300
2 2 D2
CN1300
R1100
+B
27
IC1101
R1101
RF AMP
+B
1
R1102
72
10K
3
0.7V 1 RF2
9
EFM
AGC
+B
0.8V
2 RF1
12 0.8V
3 RF4
DIFF
11
0.8V
4 RF3
DIFF
C1101
ADIP
1 1.6V 5 REFI
AGC
+B
C1102 1.6V 6 REFO
LPF
1
39
C1103
0.7V 7 RFADD
BIAS
0.027
R1103
1.6V 8 TCGI
390K
1.6V 9 AIN
9
31 23
1.6V 10 BIN
10
34
32 1.6V 11 EIN
11
35
1.6V 12 FIN
12
LOGIC
C1106
1
15
14
+3.2V
9
10
+B
R1551
0
57
R1552 R1230
0 0
59 x a o
R1553
58
0
. i
E F
R1304
+4.8V
150
1
FEMMON
2
+3.2V AVCC
1.6V 3
EFMI
4
AGND
1.3V 5
5 AIN
1.9V 6
6 EIN
1.6V 7
7 TCG
1.3V 8
8 BIN
1.9V 9
9 FIN
+3.2V
10
+3.2V VBAT
1.6V 11
11 WBI
EFM OUT
12
+3.2V VDD1
13
DGND
14
TEST0
15
TEST1
16
TEST2
17
X176KO
R1200 1.4V 18
27 FODRF
100K
R1201 1.9V 19
28 FODRR
100K
R1202 1.7V 20
Q Q
40 TRDRF
3 7
120K
ADIPI 36
R1203
1.6V 21
37 TRDRR
1.6V
120K
R1204
1.7V 22
18 SLDRF
82K
ADIPO 35
R1205 1.6V 23
17 SLDRR
1.6V
NC 34 82K
R1206 2.0V 24
ADLPFO 33
8 SPDRF
62K
1.6V
22KO 32 R1207 1.3V 25
HPF 3 SPDRR
62K
22KI 31
R1107
560
WBO 30 1.6V
11
R1108
TCGO 29 1.6V
7
22K C1113
AOUT 28 1.3V R1109 270P
5
22K C1114
BOUT 27 1.3V R1110 270P
8
22K C1115
EOUT 26 1.9V R1111 270P
6
22K C1116
R1112 270P
FOUT 25 1.9V
9
22K C1117
270P
+3.2V
L1100
0.47uH
+3.2V +3.2V
u 1 6 3
y
The DC voltage is an actual reading measured with a high impedance type voltmeter. The measurement value may vary
depending on the measuring instruments used or on the product. Refer to the voltage during RECORDABLE MD PLAY
unless otherwise specified; The value shown in ( ) is the voltage measured at the moment of STOP. The voltage followed
by (REC) refers to the value during MD RECORDING.
G H
2 4
8 9 9
+4.8V
+3.2V
TP1202
C1205
1
IC1201
DSP
SERVO
EFM/ACIRC/ATRAC
ENCODER/DECODER
6 3 1 5 1 5 0 8 9
+3.2V
3.2V
IC1202
4M BIT
D-RAM
+3.2V
m
c o
.
I J
2
8 9 9
+4.8V
+3.2V
DIGITAL
IN
DIGITAL
75 OUT
FEMON
74 1.0V
DADATA
73 0.9V
ADDATA
72 1.4V R1211
DFCK 72
220
71
1.6V
BCLK 71
70 1.6V
LRCK 70
DIGITAL
69
DGND REC
68
VDD3
67 1.6V R1212
DOUT
47
66 0V
DIN
R1217 C1209
65 150 12P
DIGITAL
XO
IN
C1208
12P
64
XI
C1207
63
DGND
62 1
VDD1 +3.2V
61
VPD R1214
60 3.2V 10K
VXI
59 3.2V
CDBCLK 59
58 3.2V
CDLRCK 58
57 3.2V
CDDATA 57
2 4 9 8 2 9 9
56
TEST4
55
TEST3
54
TESO1
53
EXPORTI
52
EXPORTO
51
X700KO
0V
R1210
220