Service manual

MD-X8
– 62 –
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• NOTES ON SCHEMATIC DIAGRAM can be found on page 31.
Figure 62 SCHEMATIC DIAGRAM (17/20)
SITUATION :
1
2
3
4
5
1234567
14 13 12 11 10
98
1
2
1
2
1
2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
123456789
10111213141516171819202122232425262728
1
2
MINF
LOADING
GND
HINF
LEAD IN
MINF
LOADING
HINF
LEAD IN
H
EFMO
TRY–
SP–
SP+
SLD–
SLD+
F+
T–
F–
VCC
GND
–
+
TRY+
T+
REG+
REGB
IN1+
VBS1
Vm1
IN1–
OUT1
VM1–
VM1+
GND
VM2+
VM2–
OUT2
IN2–
IN2+
MUTE1
MUTE2
SS.GND
VREF
VREFO
1.25V
S
G
G
D
D
S
G
G
D
D
S
S
SPN SPP
LDVAR LDON
FODRR
FODRF
TRDRF
TP
TN
FN
FP
SLP SLN
TRDRR
1
2
MAGNETIC
HEAD
CNS1903
Q1252
2SK2909
Q1254
2SK1473
Q1251
2SK2909
Q1253
2SK1473
TP1601
CNP1601
TP1602
TP1604
TP1605
T
C1252
120P
(CH)
C1251
0.027
R1251
10
CNP1252
D1252
SB0209CP
D1251
SB0209CP
R1223
680
TP1251
TP1252
R142
5
2.7
K
TP11
2
TP11
2
TP11
2
TP11
2
TP11
0
TP11
0
TP11
0
TP11
0
TP11
0
TP111
TP11
1
TP11
0
TP11
1
TP11
1
TP11
1
TP11
1
TP11
1
TP11
0
TP11
0
TP11
0
TP11
1
TP1609
TP1608
TP1611
C1609
1
TP1610
CNS1101
C1631
1
R1650
10K
C1650
820P
R1652
10K
C1651
820P
R1656
6.8K
C1653
820P
TP1616
C1421
0.022
C1422
0.022
IC16
0
M5675
8
TP1607
TP1606
C1254 10
C1255 4.7
L1251
47uH
TP11
2
R11
0
10
K
R1612
56K
C1610
10
C1604
56P(CH)
C1605
100/10
Q1601
2SA1314 C
R1617
47K
R1609
1.5K
R1611
12K
R1610
30K
R1654
6.8K
C1652
820P
C1601
4.7
5-CH MO
FLEXIBLE
PWB
CNP1602
CNP1603
CNP1604
2
3
12
15
16
1
2
1
2
1
2
M
+
–
+
–
+
–
M901
MD
SPINDLE
MOTOR
M902
MD
SLED MOTOR
M903
MD
LOADING
MOTOR
M
M
LEAD IN
HINF
GND
LOADING
MINF
WRITE
PRO
LEAD IN
MD PLAY
MD
RECORD
LOADING
MD MECHANISM SWITCH
PWB-H
R1902
1.8K
R1901
470
R1904
820
R1903 820
CNS1901
SW1952A
SW1953
SW1954
SW1955
SW1956
1
2
3
4
5
27
26 25 24
23
22
21 20
19
18
17
16
15
14
13 12
11
10
98
75
4
32
1
1
2
3
4
8
VCC
GND
LDOUT
EXT.C
APC
LVV
L.DON
L.DVAR
7
6
5
SW +2.8V B LVVOUT APCOUT LDVCC DGNG DGND LDON LDVAR
I/V I/V I/V I/V
A COM RF1 F E RF3 RF4 VCC AGND MP/R RF2 APCIN DGND LVVIN F-
T.COOL F.COOL
T+ F+ T-
MD OPTICIAL PICKUP UNIT
FW1901
1
5
1
5
28
6
DIRECT
SW1952B