Parts List - Kenwood RXD-M31MD Service Manual

AY AZ
MDM-98
-CN1501
1/5
CASSETTE BOARD
1
A
MAIN
BOARD
-CN405
2/5
B
MAIN
BOARD
-CN404
2/5
2
C
MAIN
BOARD
-CN203
CN702
2/5
6 6
Lch
D BIAS
5 5
ADJ.
(Lch)
4 4
MAIN
Rch
BOARD
-CN403
3 3
2/5
2 2
ERASE
3 1 1
E
BIAS
ADJ.
(Rch)
4
T701
BIAS OSC
5
IC701 : BA3126N
R.REC
IC702 : HA12219NT
1
IC703 : LA6458S
F.REC
2
PACK
3
CrO2
4
SOLEMOID
5
GND
6
SENSOR
7
8
470
6
9
PLAY
10
M+
11
M 12
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 are acceptably insulated from the supply circuit) before the appliance is returned to the customer.
7
BA BB
R708A
430
R707A
430
IC702
P.B/REC EQ.
11
GND
R735A 22K 10
IREF
R703A 10K
9
B.IN/L
R704A 10K 8
B.IN/R
7
VREF
R777A
10
6
PB.I/L
R778A 5
PB.I/R
10
4
REC SW
IC701
PLAY/REC HEAD SW
(PB:ON, REC:OFF)
L701
C715
10mH
R727A 10u16 3
REC.O/L
+
15K
C717A
560P
C718A
560P
L702
R728A C716
10mH
15K 10u16
2
REC.O/R
+
C722
100u16 1
VCC
11.5V +
R786A R734A
10K 1K
C721
4.7u50
Q712
11.9V
R/P SWITCH
+12V +12V
Q703
Q712 BIAS AVR
R784A
R774A
4.7K Q703
R738 9.7V
2.7K
+12V
10
REC: 10.3V
11.7V
C727A
REC: 9.1V
D702
0.022 R745A
BIAS
OSC Q702 1K
R739A
18K
REC: 0.7V
Q713
R782A
Q701
R740A
18K
+ 10K
C728A
0.022
+
Q701,702,706,707,709, D703,704 : 1N4004
711,713,715 : 2SC3330(S.T) D702,705,706 CN703
Q703 : 2SC2274E : 1SS133
12
Q705,712 : 2SA1317 D708 : MTZJ5.1B
11
Q708 : 2SA984E D709 : MTZJ13B
10
Q710 : 2SB1205(S.T)
Q714 : 2SD2061E
9
8
7 +5V
6
DESTINATION
R753A 5
COUNTRY ABB.
4
U.S.A. K
10K
3
CANADA P
2
GENERAL MARKET
M
1
47K
UK T
EUROPE E
BC BD
IC703 OPE.AMP
R705A
220K
C735A 47P
C705A R709A
0.01 12K
12
NF/L
13 R711A
EQ/L
C707
27K
14 2.2u50
PB.O/L
+
C708
2.2u50
+
R706A R718A C742A
220K 10K 47P
C734A 47P C732A
100P
R710A C706A
15 12K 0.01
PB.O/R
R712A
16
EQ/R
27K
17
NF/R
+
+
18
120/70
19
A/B
20
B.1/2
C713 R719A
21 2.2u50 18K C738A
REC.I/L 3300P
+
C714 R720A
22 2.2u50 18K
REC.I/R
+
+
+ +
1.3V
R751A R752A
33K 22K
1.8V
Q707
11.9V
+12V +12V
Q705 5.0V
R748A
47K
10.9V
BIAS
ON/OFF
SW
R750A
Q706
10K
REC: 5.0V
MOTOR 15.9V
DRIVER
Q714
16
16
12.2V
17
18 Q710 Q708 17
Q715
12.8V
18
19
13.4V
20
Q711
Q709 +
SOL.
19
DRIVER
20
+5V
5.0V
The DC voltage is an actual reading measured with a high impedance type voltmeter with a cassette
loaded at playback mode. The measurement value may vary depending on the measuring instruments
used or on the product. Bias circuit DC voltage is measured while in the record mode.
DOLBY and the double-D symbol are trademarks of Dolby Laboratories Licensing Corporation. Noise
reduction circuit made under license from Dolby Laboratories Licensing Corporation.
BE BF
MD CONTROL BOARD
C743A R717A
47P 10K CN501
ROUT 1
C733A
100P
AGND 2
LOUT 3
R780A AGND 4
4.7K
RIN 5
AGND 6
+
LIN 7
C724
E
1000u16
11.3V MDRST 8
+
UART1 9 9
UART2 10 8
C739A
3300P
u.GND 11
+5V 12 +5V
CE 13
PRTMD 14
CN504
CDGND 1
D
DOUT 2
CN502
M.DOUT 1 R546A
1.5K
D.GND 2
DIGI.I 3
CN701 BACKUP 4 4
PDOWN 5 5
1 R OUT
RESET 6 6
2 L OUT
MD.ST 7 7
3 A.GND
DSCK 8 8
4 R IN
SEARCH 9 9
KDATA 10 10
MDATA 11 11
DSTB 12 12
11.9V
D.GND 13
D.GND 14
+12V 5 +12V
D.GND 15
6 L IN
D.GND 16
+5V 7 +5V
DVDD 17 +5V
8 M.GND
DVDD 18
PSWCK 19
A
LOADSW 20 20
AVCC 21 +6V
5.9V
9 D.+12V
C
10 BIAS
R754A 11 B.1/2
9.1K
12 A/B.1
R755A
13 A/B.2
3.9K
14 SOL
15 CMP
R763A
100
16 R.REC
LIN 22
R764A
A.GND 23
100
17 F.REC
RIN 24
R765A
100 A.GND 25
18 PACK
R766A
100
19 PLAY
20 PHOTO
LOUT 26
A.GND 27
ROUT 28
+5V
BG BH
IC503
R567A
10K
R558A C529A
100K 820P
R568A
10K
+
+
C530A R556A R559A R569A
820P 18K 4.7K 100
+12V
+ 11.7V
+
+
+
+5V
MD-DVDD
7.7V
REG. C535A
820P
+8V
C536A
820P
6.1V
R565A
D505
R517
15K
+5V
22 1W
R566A
15K
R518 1
Q501
R519 1
6.7V
R520
Q502
1
+
+B
R521 C533A
1 2200P
C534A
3.7V R526 2200P
Q504
4.3K
R561A
R523
Q503 10K
1.5K 3.7V
R562A
+ 3.1V 10K
+5V
5.0V
R531
+8V
4.7 1/4W
Q505
+
R530
MD-AVCC
REG. 47
+
R553A
120
R554A
120
+8V
C501
10u10
+
C502
10u10
+