
Circuit Descriptions
Samsung Electronics
5-11
5-4 Servo
5-4-1 Outline
SERVO system of DVD is divided into Focusing SERVO, Tracking SERVO, SLED Linked SERVO and CLV
SERVO (DISC Motor Control SERVO).
1) Focusing SERVO
Focuses the optical spot output from object lens onto the disc surface. Maintains a uniform distance between
object lens of Pick-up and disc (for surface vibration of disc).
2) Tracking SERVO
Make the object lens follow the disc track in use of tracking error signal (created from Pick-up).
3) SLED Linked SERVO
When the tracking actuator inclines outwardly as the object lens follows the track during play, the SLED motor
moves slightly (and counteracts the incline).
4) CLV SERVO (DISC Motor Control SERVO)
Controls the disc motor to maintain a constant linear velocity (necessary for RF signal).
5-4-2 Block Diagram
Fig. 5-17
DISC
SLED M/T
HALL
PCB
LD
PD
SPINDLE M/T
CN1
HA1+
HA1–
HA2–
HA2+
SLED+
SLED–
AO
DO
CO
BO
FO
EO
PD
LD
F–
T+
T–
F+
SPINDLE
FOCUSING
TRACKING
SIC8
NJM2903
RIC1
KS1461
MIC1
TMP 93CS41F
FIC1
LC86P6232
FRONT MICOM
OPEN/CLOSE S/W
ROLUETTE SENSOR
DISC SENSOR
SIC1
KS1452
DRIC2
KA3010D
DRIC1
KA3011D
+
›
!
x
“
0
&
t
1
2
8
7
!
@
#
@
%
^
DECK
OPEN/CLOSE
MOTOR
DRIC2
KA3010D
MOTOR DRIVE
DRIC3
KA3082
ROULETTE MOTOR DRIVE
ROULETTE
MOTOR
Summary of Contents for DVD-C700
Page 23: ...Reference Information 2 16 Samsung Electronics MEMO ...
Page 49: ...4 24 Samsung Electronics Disassembly and Reaasembly MEMO ...
Page 83: ...Troubleshooting 6 14 Samsung Electronics MEMO ...
Page 89: ...Exploded Views and Parts List 7 6 Samsung Electronics MEMO ...
Page 101: ...8 12 Samsung Electronics Electrical Parts List MEMO ...
Page 105: ...PCB Diagrams 10 2 Samsung Electronics 10 1 Main COMPONENT SIDE SOLDER SIDE ...
Page 106: ...PCB Diagrams Samsung Electronics 10 3 10 2 Jack ...
Page 107: ...PCB Diagrams 10 4 Samsung Electronics 10 3 S M P S ...
Page 108: ...PCB Diagrams Samsung Electronics 10 5 10 4 Front COMPONENT SIDE SOLDER SIDE ...
Page 109: ...PCB Diagrams 10 6 Samsung Electronics 10 5 Key COMPONENT SIDE SOLDER SIDE ...
Page 110: ...PCB Diagrams Samsung Electronics 10 7 10 6 Head Phone 10 7 Deck COMPONENT SIDE SOLDER SIDE ...
Page 111: ...PCB Diagrams 10 8 Samsung Electronics 10 8 Sensor 10 9 Motor ...
Page 113: ...Wiring Diagram 11 2 Samsung Electronics MEMO ...
Page 115: ...Schematic Diagrams 12 2 Samsung Electronics 12 1 S M P S ...
Page 116: ...Schematic Diagrams Samsung Electronics 12 3 12 2 Main Power Supply ...
Page 117: ...Schematic Diagrams 12 4 Samsung Electronics 12 3 Main Micom ...
Page 118: ...Schematic Diagrams Samsung Electronics 12 5 12 4 Servo ...
Page 119: ...Schematic Diagrams 12 6 Samsung Electronics 12 5 Video Encoder ...
Page 120: ...Schematic Diagrams Samsung Electronics 12 7 12 6 Video CVBS Output Y Output C Output ...
Page 121: ...Schematic Diagrams 12 8 Samsung Electronics 12 7 Audio DAC ...
Page 122: ...Schematic Diagrams Samsung Electronics 12 9 12 8 Audio ...
Page 123: ...Schematic Diagrams 12 10 Samsung Electronics 12 9 RF ...
Page 124: ...Schematic Diagrams Samsung Electronics 12 11 12 10 ZiVA ...
Page 125: ...Schematic Diagrams 12 12 Samsung Electronics 12 11 DSP ...
Page 126: ...Schematic Diagrams Samsung Electronics 12 13 12 12 Front Micom VFD Display ...
Page 128: ...Schematic Diagrams Samsung Electronics 12 15 12 14 Head Phone ...
Page 129: ...Schematic Diagrams 12 16 Samsung Electronics 12 15 Key ...
Page 130: ...Schematic Diagrams Samsung Electronics 12 17 12 16 Deck ...
Page 131: ...Schematic Diagrams 12 18 Samsung Electronics 12 17 Deck Control ...
Page 132: ...Schematic Diagrams Samsung Electronics 12 19 12 18 Remote Control ...
Page 133: ...Schematic Diagrams 12 20 Samsung Electronics MEMO ...