Sylvania 6620LDG, Service Manual

Page: 36 / 74

9-7
BLOCK DIAGRAMS < DVD SECTION >
System Control / Servo Block Diagram
L2650BLSD
IC301 (SER
V
O DRIVE)
CN301
M
SLED MOTOR
M
SPINDLE MOTOR
IC101 (MICR
O
CONTR
O
LLER)
+ -
+
-
+
-
+
-
+
-
+
-
+
-
SLED M
OTO
R
DRIVE
FOCUS A
CTU
A
T
OR
DRIVE
SPINDLE M
OTO
R
DRIVE
TRA
CKING
A
CTU
A
T
OR
DRIVE
126
LO
AD-DISC
SLD
67
SPDL
66
TRA
CKING
DRIVE
127
FOCUS DRIVE
65
FS(+) FS(-) TS(+) TS(-)
LO
AD-DISC
1
SP(+)
2
SP(-)
6
LO
AD-DISC
3
GND
4
SL(-)
5
SL(+)
VREF
RESET
70
RESET
IC462
1
3
+3.3V
IC202 (OP AMP)
15 16 14 13 12 11 17 18
23
6 4 5 3 1 2
25 24 27 26
121
SP-R
O
T
124
FD-OFST
123
TD-OFST
RESET
IC461
2
1
+3.3V
T
O
DIGIT
A
L SIGNAL
PR
OCESS BLOCK
DIA
GRAM
DRIVE CB
A
D
VD MAIN CB
A UNIT
CN1651
MAIN CB
A
CN401
3
DISC-OUT
3
2
LED-CONT
2
122
SL-ADS
DISC-IN
1
2 6
7
5 3
3
DISC-IN
3
2
DISC-OUT
2
CN801
CN5001
DISC-OUT
SENSOR CB
A
+3.3V
1
LED-PO
WER
1
Q804
63
DISC-IN
61
DISC-OUT
TO SYSTEM CONTR
O
L
BLOCK DIA
GRAM
< LCD
TV SECTION >
46
PWRCON
53
D
V
D-SCLK
54
D
VD-CS
49
D
VD-REMO
T
E
56
D
V
D-SD
A
T
A
25
D
VD-REMO
TE
25
24
D
VD-SD
A
T
A
24
22
D
VD-CS
22
21
D
VD-SCLK
21
20
PWRCON
20
23
DISC-IN
23
PWRCON
D
V
D-SCLK
D
VD-CS
D
VD-SD
A
T
A
D
VD-REMO
TE
LED-CONT
DISC-OUT
DISC-IN
1 NOTE:
Either IC461 or IC462 is used for DVD MAIN CBA UNIT.