
Reference Information
Samsung Electronics
2-25
2-5 SERVO circuit
2-5-1 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).
Summary of Contents for DVD-905
Page 5: ...Precautions 1 4 Samsung Electronics MEMO ...
Page 7: ...Product Specifications 3 2 Samsung Electronics MEMO ...
Page 87: ...Thoubleshooting 5 26 Samsung Electronics MEMO ...
Page 93: ...Exploded View and Parts List 6 6 Samsung Electronics 6 3 Remote Control ...
Page 121: ...Electrical Parts List 7 28 Samsung Electronics MEMO ...
Page 123: ...Block Diagrams 8 2 Samsung Electronics MEMO ...
Page 124: ...Samsung Electronics 10 1 10 Wiring Diagram ...
Page 125: ...Wiring Diagrams 10 2 Samsung Electronics MEMO ...
Page 127: ...Schematic Diagrams 11 2 Samsung Electronics 11 1 SMPS ...
Page 128: ...Schematic Diagrams Samsung Electronics 11 3 11 2 FRONT ...
Page 129: ...Schematic Diagrams 11 4 Samsung Electronics 11 3 MICOM ...
Page 131: ...Schematic Diagrams 11 6 Samsung Electronics 11 5 VIDEO 1 2 3 4 5 7 8 9 10 6 11 12 13 14 15 16 ...
Page 133: ...Schematic Diagrams 11 8 Samsung Electronics 11 7 AUDIO 2 ...
Page 134: ...Schematic Diagrams Samsung Electronics 11 9 11 8 DATA PROCESSOR ...
Page 135: ...Schematic Diagrams 11 10 Samsung Electronics 11 9 A V DECORDER ...
Page 136: ...Schematic Diagrams Samsung Electronics 11 11 11 10 PICK UP DECK ...