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4. Block Diagram
4-1 Main Part
Samsung Electronics
4-1
4-2 CD Part(COMMON)
DISC
PICK - UP
SLED MOTOR SPINDLE MOTOR TRACKING ACTUATOR FOCUSING ACTUATOR
16.9344MHz A.B.C.D.E.F EFM.TRCNT 66.69 9 LD.PD 8
18 SP+ 12 SL-
17 SP-
26
27
1
2
TRK+ TRK-
FCS- FCS+
DIGITAL SIGNAL PROCESSOR 6
+5V
MOTOR/ACTUATOR DRIVER
11 SL+ 10 19
NIC 9258 KA9258
25 3
NIC9286 KS9286
10.70.72 73.75.76 19
LOCK.SMEF.WDCH.SMON.SMSD
R
VREF
9
IN
IN
IN
IN
NIC9223 KB9223
27 36.37.38 68 25.26.30 29 20 L 16 12 13
SL
SP
TE
EF
P/U IN LIMIT S/W
41
43
46
50
48
71
69.70 65.66. 67.68 33.30 29.25 22.24.23
ASSP NIC 9223 KB9223
OPEN/CLOSE MOTOR UP/DOWN MOTOR ROULETTE MOTOR
31 35.36.37 38 R-CH L-CH A. GND
40
RESET
MCK. MDATA. MLT
2
10
SQDT. LKFS. SOS1
GND
SIC1,SIC2,SIC3
FOK MOTOR CONTROL S/W SENSOR
ISTAT
SQCK
SCW1 MICOM CTRL LINE
SCW4 POWER / AUDIO LINE
MAIN PCB
MAIN PCB
4-2
Samsung Electronics
B+