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2. SERVO CIRCUIT DIAGRAM
R206
100K
Q202
2N3904
2
2
CON200
Q200
Q201
2SK3018
2SK3018
GT223
R204
GT222
91
30
DVD VR
29
CD VR
28
GT243
GT221
R205
NC1
MDI1
91
27
GT220
Imon
R200
0
26
GT219
SUBB
F1
R201
0
25
GT218
SUBA
F2
24
GT217
D
TD
23
GT216
C
TC
22
GT215
A
TA
21
GT247
B
TB
20
GT214
B206
GND1
0
19
GT246
RF
18
GT213
B207
B200
GND2
0
0
17
HFM
GT212
B201
16
NC2
GT242
0
15
GT245
DVD LD+
14
B202
GT210
LD GND
B203
0
13
CD LD+
0
12
GT241
NC3
11
GT208
R202
SW
GT207
0
10
T1
9
GT206
R203
T2
0
8
GT205
B204
A+5V
Vcc
0
7
GT244
Vref
6
B205
C200
GND3
BEAD
0.1U
5
NC4
GT203
4
GT240
C204
GT202
FO-
Fo-
0.1U
GT201
3
TR-
Tr-
2
GT200
TR+
Tr+
1
F+
Fo+
TP201
R216
R217
TP202
1
1
U201
15
14
VOTK+
VOFC+
16
13
VOTK-
VOFC-
SL+
17
12
TP203
VOLD+
VOSL+
SL-
18
11
TP267
VOLD-
VOSL-
19
10
PGND
PGND
S+5V
20
9
VNFTK
PVCC1
21
8
PVCC2
VCC
30
29
G2
G1
R225
20k
22
7
PREGND
VNFFC
FMSOA
23
6
VINLD
VOSL
24
5
CTK2
VINSL-
C205
25
4
CTK1
VINSL+
150pF
TRSO
26
3
VINTK
CF2
V1P4
27
2
BIAS
CF1
C211
STBY
28
1
STBY
VINFC
0.1uF
BA5954
R235
C214
10k
0.1uF
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R208
10K
A+5V
R209
10K
1
IOA
R207
100K
A+3.3V
A+3.3V
L200
10UH
D210
RFIP
1SS355
C201
DVD_LD
0.1U
CD_LD
TNI
TPI
V20
R212
47
S+5V
B209
FB/50
R213
4.7k
0603
HA2
R214
R215
1
1
R218
0
1
R219
0
2
SPINDLE
3
4
LIMIT
5
TP204
R223
47
6
TP207
HV-
7
S+5V
A+3.3V
8
HV+
HW-
9
HW+
10
PIN1
HU-
11
HU+
12
13
R226
R227
10k
20k
14
V
TP208
15
V1P4
W
16
R231
20k
17
U
18
FOSO
C206
150pF
HEADER 18 SMD0.5 TOP
FPC18\0.5
+
C217
47uF/16v
The countermeasure of static electricity
D202
STZ6.8N(OPEN)
A
1
3
1
3
D203
STZ6.8N(OPEN)
B
1
3
LD PART
1
3
D204
R233
STZ6.8N(OPEN)
0
CD_LD
C
1
3
1
3
D205
STZ6.8N(OPEN)
D201
D
1
3
STZ6.8N(OPEN)
1
3
D206
STZ6.8N(OPEN)
SUBB
1
3
1
3
D207
STZ6.8N(OPEN)
D200
SUBA
1
3
1
3
STZ6.8N(OPEN)
D208
R234
STZ6.8N(OPEN)
0
DVD_LD
TNI
1
3
1
3
D209
STZ6.8N(OPEN)
TPI
1
3
1
3
S+5V
R220
R221
R222
R
1
1
C207
C215
+
0.1uF
47uF/16v A
C208
C209
C210
0.1uF
0.1uF
0.1uF
U202
28
27
RNF
VM1
S+5V
26
VM2
25
VCC
R224
0
W
2
24
FG
A3
FG
V
R228
0
4
23
ENDM
A2
PS
U
R229
0
V1P4
7
22
A1
EC
HU+
DMSO
9
21
H1+
ECR
HU-
10
20
H1-
FR
HV+
11
18
H2+
SB
HV-
R232
R
12
16
H2-
BR
HW+
13
17
H3+
CNF
C212
C213
HW-
14
H3-
H-
15
8
VH
GND
0.1uF
0.1uF
30
29
G2
G1
BA6849/6869
BA5954
3-33
3-34
L201
10uH
Q203
LDO1
1
2SB1132
2
2
2
C202
C
22U/10V
R210
4.7
1
B
C
E
3
A+3.3V
B208
BEAD
R211
4.7
2
2
C203
22U/10V
Q204
1
LDO2
2SB1132
L202
10uH
TP240
V1P4
TP241
V1P4
V20
V20
TP242
MDI1
TP243
MDI1
3
SUBA
TP244
SUBA
3
SUBB
TP245
SUBB
3
A
TP246
A
3
B
TP247
B
3
MT1389
C
TP248
C
3
D
TP249
D
3
RFIP
TP250
RFIP
3
TNI
TP251
TNI
3
TP252
TPI
TPI
3
R230
D11
LIMIT
LIMIT
3
20k
TP253
NC
IOA
TP254
IOA
3
LDO1
TP255
LDO1
3
LDO2
TP256
LDO2
3
C216
+
STBY
TP257
STBY
47uF/16v A
FOSO
TP258
FOSO
3
BCAP
TRSO
TP259
TRSO
3
FMSOA
FMSOA
3
TP261
DMSO
TP262
DMSO
3
FG
FG
3
TP264
TRAY_OPEN_SW
TRAY_OPEN_SW
3
ENDM
3
A+5V
1,3,4,5,6
A+3.3V
1,3,4,5
S+5V
1
GND
1,3,4,5,6,7,8
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