Kenwood X92-4470-00 Service Manual page 14

A
(X32-5220-0X)
1
LOADING &
SLED MOTOR
M
18
19
2
SPINDLE
MOTOR
M
12
13
3
CN1
D.OUT 24
12EJE SW
S2
12EJE SW 23
LOS SW
S1
LOS SW 22
CLK 21 96
DATA 20 94
A8V 19 A8V
Lch 18
A.GND 17
Rch 16
MUTE R 15 20
MUTE L 14 19
MRST 13 31
4
MSTOP 12 87
12
8EJE SW
∗
S4
8EJE SW 11
LOE/LIM SW
S3
LOE/LIM SW 10
BU5V 9 BU5V
D.GND 8
D.GND 7
D4.7V 6
D4.7V 5
LO/EJ 4
MOTOR 3
S7.5V 2 S7.5V
S.GND 1
5
IC2
Q3
IC3
6
D1
CAUTION : For continued safety, replace safety critical components only with
manufacturer's recommended parts (refer to parts list).
Indicates safety critical components. 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
7
returned to the customer.
• DC voltages are as measured with a high impedance voltmeter. Values may
vary slightly due to variations between individual instruments or/and units.
B
L.P.F.
A8V
R2
8
6
330
7
5
IC12 (2/2)
R1
4
3
330 1
2
IC12 (1/2)
A8V A8V
Q4
IC6
Q5
4.7K
4.7K W3
Q1
4.7K
4.7K
BU5V
C6
0.1
12
CP1
100K
24
22
W2
3.3V AVR 19
20
R96
1K
31
87
22K
22K
2.5V AVR
C5
4.7
L1
+3.3V
+2.5V
C
A3.3V
R114
R116 11K
R110
30K
2.7K
R111
2.7K
R117 R115
30K 11K
3.3V AVR
A3.3V
S7.5V
SW5V
BU5V
CP27
CP21
100
100
1
5V
2
0V
3
4
5
5.0V 6
EVDD
0V 7
EVSS
8
9
5.0V 10
PON
0V 11
PON
R84
5.0V 12
LOE/LIM SW
4.7K
MICRO COMPUTER
0V 13
8EJE SW
0V 14
LOS SW
0V 15
12EJE SW
16
17
0V 18
VPP
CP28 5.0V
100
19
MUTE L
20
MUTE R
21
5V
5.0V
22
0V
23
24
CP31
25
100
CP3
100
X1
16.00MHz
BU5V
D
C4
4.7
C11
4700P
R16
13K
C7
330P
0V
IC4
BTL
DRIVER
C20 C18
330P 1500P
R27 R25
13K 18K
S7.5V
SW5V
BU5V
R17
100K
CP2
100K
AVREF
AVSS
AVDD
DBBRRDY0
DBBWRDY0
REQ
3.3V
RESET
IC5
CS
HCSB
AD15
AD14
AD13
AD12
3.3V AD11
0V
AD10
AD9
AD8
BVSS
BVDD
AD7
3.3V
0V AD6
AD5
AD4
DTA143EK DTC124EUA
E
0V
75
74
5.0V
73
SW5V
72
C21
5.0V
0.1
71
BU5V
R71
0V
10K
70
70
R70
3.3V
10K
69
69
0V
68
68
R34
R29
100 100K
67
66 0V
65 3.3V
65
64 0V
64
63 0V
63
62 0V
62
61
AD12
60
AD11
59
AD10
58
AD9
57
C19
AD8
56 0V 0.1
55 3.3V
+3.3V
54
AD7
53
AD6
52
AD5
51
AD4
+3.3V
+2.5V
(1/3)