Circuit Operating Descriptions
7-49
B. SEARCH Mode :
Search mode : Fine seek,(Moving the tracking actuator slightly little below 255 track) and coarse search, moving
much in use of sled motor. The coarse search will be described in sled linked servo and now, the fine seek is
explained shortly.
If the object lens is located near target, cut off the tracking loop and give the control signal as many as desired
count to move the tracking actuator via SIC1 pin 14 terminal(TRD).
3) SLED LINKED SERVO
• Normal play mode
Move SLED motor slightly by means of PWM signal in SIC1 pin 26, as the tracking actuator moves along with
track during play. Control to move the entire Pick-up as the tracking actuator moves.
• Coarse serach mode
In case of long-distance search (such as chapter serach), SIC1 uses MIRR and TZC signal of SIC1-37, 159.
Then, read ID and compute the existing track count after input of next track.
If the existing track count is within fine seek range, tracking begins using fine seek.
4) CLV SERVO(DISC MOTOR CONTROL SERVO)
Input RF signal (from Pick-up) to SIC1 pin 152.
Detect SYNC signal from RF in SIC1, and output PWM signal to SIC1 pin 28 for constant linear velocity.
Summary of Contents for SV-DVD50
Page 82: ...Circuit Operating Descriptions 7 7 Fig 7 12 Block Diagram...
Page 116: ...Circuit Operating Descriptions 7 41 3 Block Diagram Fig 7 38 LA70100M Block Diagram...
Page 141: ...VCR Deck Operating Description 8 12 Samsung Electronics Fig 8 14 Mecha Timing Chart...
Page 156: ...Samsung Electronics 11 1 11 Wiring Diagram...
Page 158: ...Schematic Diagrams 12 2 Samsung Electronics 6 1 S M P S...
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Page 160: ...Schematic Diagrams 12 4 Samsung Electronics DT701 6 3 Display Function...
Page 161: ...Schematic Diagrams Samsung Electronics 12 5 6 4 System Control Servo...
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Page 165: ...Schematic Diagrams Samsung Electronics 12 9 6 8 SECAM Option...
Page 166: ...Schematic Diagrams 12 10 Samsung Electronics 6 9 OSD VPS PDC...
Page 167: ...Schematic Diagrams Samsung Electronics 12 11 6 10 TM...
Page 168: ...Schematic Diagrams 12 12 Samsung Electronics 6 11 Input Output...
Page 169: ...Schematic Diagrams Samsung Electronics 12 13 6 12 DVD AV Decoder...
Page 170: ...Schematic Diagrams 12 14 Samsung Electronics 6 13 DVD Servo...
Page 171: ...Schematic Diagrams Samsung Electronics 12 15 6 14 DVD Audio Video...
