Kenwood MDX-01 Service Manual page 14

A B
MD MECHANISM
(D40-1706-05) : MDM-06G
Q Q
3 7 6 3 1 5 1 5 0
1
(X29-2650-00) (A/2)
4
3
2
1
11 10 9 8 7 6 5 4 3 2 1
CN1
2
CN2
TRK- 21 16
TRK+ 20 15
FCS- 19 18
FCS+ 18 17
K 17
PD 16
VR 15
L6
3
MOD 14
L5
ILCC 13
LD-GND 12
OPTICAL
+
PICKUP
BLOCK VCC 11 +B
(KMS-260B)
J 10
B 9 5
A 8 4
3
VC 7 3
T E
L 1 3 9 4 2 2 9 6 5 1 3
I 6
F 5 9
4
9
C 4 6
D 3 7
E 2 8
VEE 1 8
IC1 : CXA2523AR
IC2 : CXD2664R
IC5 : BD7911FV
IC6 : S-24C02BFJ-TB
IC7 : HM51W4400BTT-7 or
MN41V4400TT-08 or
LC32S4400T-10 or
MN41V4400SJ-08
IC8 : BA5984FP
5
IC10 : L1087MPX-3.3
IC12 : AK4550VT
IC24 : HD6432227N08FA
Q1 : FMW1
Q2,3 : DTA144EUA
Q4,5 : DTC114YUA
Q6,8 : 2SA1576A(R,S)
Q7 : 2SB798-DL
Q10,11 : DTC124EUA
Q20 : DTA124EUA
D1,2 : EC10QS06
D10-13 : 1SR154-400
D101 : MA111
6 DIGITAL LINE
SIGNAL LINE
GND LINE
+B B LINE
B LINE
B
CN4
w w w
1
2
3
4
OVER
WRIGHT
HEAD
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
7 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.
C D
(X33-1270-00)
(X29-) (B/2) CN3
DISC ID 11 48
HEAD POSI 10 47
LOAD SW 9 44
SLT SW 8 43
LOAD M- 7
W1 W3
LOAD M+ 6
0 0
SPDL+ 5
SPDL- 4
GND 3
SLED+ 2
SLED- 1
ID 4
1
TE2 1
LOAD 3
2
SLT 2 TE1 2
3
GND 1 FE1 3
4
FE2 4
5
RF 5
ADJUSTMENT
6
TOP2 6
7
TOP1 7
8 R108 1K
F 9
R109 1K
9
E 8
10
VC 3
Q7
2.1V 1
I
2.1V 2
J
1.8V 3
VC
3
1.7V 4
4 A
1.7V 5
5 B
1.7V 6
6 C IC1
1.7V 7
7 D
RF AMP
C200
1.7V 8
8 E
10 1.7V 9
9 F
0.2V 10
PD
2.7V 11
R106 11 APC
3.3M
R163
2.2K 0.2V 12
12 APCREF
0.2V
Q2
R159
100K
C106
1000P
Q2
+
3.3V
+
+B +B
3.4V
APC
Q6
L8 L7
Q1
3.5V
2
3
4
+
2.7V
5
1
3.0V
Q4 Q5
LD
CHANGE 3.3V
0V
-OVER
+3.3V
x a o
. i
E F
9
10
IC7
W7
12 10 3.3V
11
VCC +B
36 A4
9
11
12 A3 31
37 A5
8
13
A2 32
38 A6
7
13
14 A1 33
39 A7
14 6
15
A0 34
40 A8
16 5
43 XOE A9 45
17 4
44 XCA XRS 46
18 3
51 DO3 XWE 47
19 2
50 DO2 DO1 48
20 1
GND DO0 49
51
4M DRAM
C128 R131
SHOCK PROOF 1.7V
0.01 10K
C129
1.7V
0.47 3.5V
1.8V +B
0.4V
R137 C133
1.8V
100 4700P
R136 1K R135
1.1V
C132 0.47 3.3K
R134 1K
2.0V
63
2.0V
W108
1.1V
68
36 0.3V 63
BOTM 64
0.3V
64
35 1.4V
ABCD 65 1.4V
65
1.7V
66
2.0V
67
R146 R150 1.8V
68
100 220
34 1.7V
FE 66
33 2.0V
AUX 67 3.5V
+B
32 0.1V
ADFG
31 2.6V C113 1 Q Q
ADAGC
3 7
30 1.7V
3.3V ADIN
29 C112 4700P
1.7V ADFM
R147 100
28 1.7V
1.8V SE 74 74
27 C111 0.068 1.7V
75
CSLED
R148 R141
26 1.7V
TE 75
0.4V IC2
25 0.4V 100 560
WELAD
ACIRIC
ATRAC
ENDECODER
3.5V
R139
+
1
+B +3.3V
LD
ON/OFF
3.3V
R162
2.2K
Q3
R164
680
Q7
R167
4.7K
+3.3V
u 1 6 3
y
G H
2 4
8 9
+B
51
52
53
54
55
COMP
56
57
CLOCK
GENERATOR
58
EFM/ACIRC
ENCODER/DECODER
59 1.6V
60 1.6V
61
62
63
64
65
ADIP DECODER
66
67
68
69
SERVO
70 DSP
71
6 3 1 5 1 5 0 8
72
AUTO
73
SEQUENCER
PWM SPINDLE
GENERATOR SERVO
74
75
+B +B
5.1V
+3.3V +3.3V
+5V
IC5
HEAD
DRIVER
+3.3V +3.3V m
C185
1000P
c o
.
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 (
moment of STOP. The voltage followed by (REC) refers to the value during MD RECORDING.
I J
2
9 8 9 9
+B +B +B
0.8V
DIGITAL
REC
PLAY
25 0.9V
R7 10K
24
23 R6 10K
R5 10K
22
21
20 0V R8 100
R9 100
19 0V
18 W6
L50 1.8uH C46 0.1
17
C13 2P
C12 2P
16 1.5V
15 0V 1024fs
96
14 3.2V
92
13 0V
97
12 3.3V
78
SUBCODE
11 3.3V
PROCESSOR
81
10 3.3V
98
9 3.2V
87
8
84
7 3.2V
82
6 3.1V
85
5 3.2V
83
4 3.3V
9 2 4 9 8 2 9 9
88
3 3.3V
89
2 0V
91
1 3.3V
90
0V
+B +B
EFM
OUT
+5V
C181
10
+5V
C321
10
+3.3V
+5V
) is the voltage measured at the