Service manual

CD-SW250DVD
4 – 3
Figure 4-2 BLOCK DIAGRAM (2/3)
LASER DRIVER
LASER DRIVER
INVERTER
12
14
18
16 208
207
206
205
FDO
TDO
SPDO
SLDO
VREF
1,14,18,21,22, 24,28,34,53,71, 90,102,103,113, 129,145,152,156, 158,170,178,193
DGND
13,20,26,
30,192
47,59,84,129,
137,155,175
D3.3V A3.3V
8
1-4,7
DGND
D3.3V
5 6
163
162
SDA
SCL
4K BIT
EEPROM
IC3203
M24C04
177176
33.8688MHz
XL3001
1,24,34
7,17
22,2
29,3
2
21,23,25,
28,31,33
AGND
A5V
ROUT GOUT BOUT VOUT
31 29 27 25
2,6,8,
11,14,16
19725
MGNDDGND
+8V
8,19,56 54,55
48
2,29,63
DGND
A3.3V
RF5V
VIDEO
BUFFER
LA73054
IC3701
2
DGND
CN3006
MOTOR PWB
FROM MAIN PWB
DGND
MGND
A5V
L-CH
AGND
+8V
RF5V
D1.8V
A3.3V
D3.3V
R-CH
19-24 31-34
GND
TRAY SW2
TRAY SW1
CLAMP
DISC
PHOTO
+7V
TR+
TR-
CAM+
CAM-
SW3
SW2
SW1
SW4
RX1
M2
M1
CN3005
LED
FG
AGND
NC
FROM DISPLAY PWB
MO_SPEED
MOT_B-
MOT_B+
MOT_A-
MOT_A+
PHOTO
DISC/CLAMP
TRAY SW1/SW2
GND
+5V
CN3004
CN3003
CN3002
CN3001
RF
186,187
185
FE TE
184
SINGLE
FO
R
LC74
2
IC
3
159
DGND
DGND
15
40 39
17
RF5V
Q3104
Q3105
Q3101
Q3102
Q3103
RF5V
26
1,3-7,
9,10,13,
52,58,59,
61,62,64
16,18
DVD PLAYER
FRONT END
PROCESSOR
LA9703W
IC3101
35,36
1,2
UNIT ASSY
DVD MECHANISM
PICKUP
SPINDLE
MOTOR
SLED
MOTOR
PICKUP
IN_SW
5,6
DGND
DGND
PUIN
SL-
SL+
3,4
SPIN/SLED DRIVER
FOCUS/TRACKING
LA6261
IC3001
SP-
SP+
UNIT Ass'y
F-
F+
T+
T-
C_c
D_d
CD_DVDB
RF
A_a
B_b
F
GND_PD
Vref
VCC
E
NC
VR_CD
VR_DVD
CD_LD
MD
HFM
DVD_LD
GND_LD
6
1
7
5
3
2
8
9
10
4
11
1
2
3
4
5
6
7
8
9
11
10
11
5
9
10
4
7
1
8
2
3
6
9
1
2
3
4
5
7
6
8
9
10
1
24
3
16
20
19
23
22
18
17
M
M
1
2
1
2
3
4
5
6
7
10
15
13
14
12
2
8
21
7
6
5
11
4
(Serial No. t
o
LC7
4
(Serial No. fr
o