Circuit Descriptions
Samsung Electronics
6-13
(2) 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 76 terminal(TRD).
3) SLED LINKED SERVO
¥ Normal play mode
Move SLED motor slightly by means of PWM signal in SIC1 pin 73, 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 sled FG (SIC8 pin 1, 7, which is generated) by
rotation of sled motor via hall PCB. 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 pin59. Detect SYNC signal from RF in SIC1, and output PWM signal to
SIC1 pin 55 for constant linear velocity.
Summary of Contents for DVD-739
Page 23: ...Reference Information 2 16 Samsung Electronics MEMO ...
Page 25: ...Product Specification 3 2 Samsung Electronics MEMO ...
Page 29: ...Operating Instructions 4 4 Samsung Electronics MEMO ...
Page 77: ...Exploded Views and Parts List 8 6 Samsung Electronics MEMO ...
Page 87: ...Block Diagrams 10 2 Samsung Electronics MEMO ...
Page 89: ...PCB Diagrams 11 2 Samsung Electronics 11 1 Main COMPONENT SIDE SOLDER SIDE ...
Page 90: ...PCB Diagrams Samsung Electronics 11 3 11 2 Jack ...
Page 91: ...PCB Diagrams 11 4 Samsung Electronics 11 5 Deck 11 4 Play 11 3 Power ...
Page 92: ...Samsung Electronics 12 1 12 Wiring Diagram JACK PCB MAIN PCB DECK PCB PLAY PCB POWER PCB ...
Page 93: ...Wiring Diagram 12 2 Samsung Electronics MEMO ...
Page 95: ...Schematic Diagrams 13 2 Samsung Electronics 13 1 S M P S ...
Page 96: ...Schematic Diagrams Samsung Electronics 13 3 13 2 Main Power Supply ...
Page 97: ...Schematic Diagrams 13 4 Samsung Electronics 13 3 Main Micom ...
Page 98: ...Schematic Diagrams Samsung Electronics 13 5 13 4 Servo ...
Page 99: ...Schematic Diagrams 13 6 Samsung Electronics 13 5 Video Y Output C Output CVBS Output ...
Page 100: ...Schematic Diagrams Samsung Electronics 13 7 13 6 Audio ...
Page 101: ...Schematic Diagrams 13 8 Samsung Electronics KCN1 KCN2 13 7 5 1 Channel Audio DVD 929K Only ...
Page 102: ...Schematic Diagrams Samsung Electronics 13 9 13 8 RF ...
Page 103: ...Schematic Diagrams 13 10 Samsung Electronics 13 9 ZiVA ...
Page 104: ...Schematic Diagrams Samsung Electronics 13 11 13 10 DSP ...
Page 107: ...Schematic Diagrams 13 14 Samsung Electronics 13 13 Mute ...
Page 108: ...Schematic Diagrams Samsung Electronics 13 15 13 14 Karaoke Power ...
Page 109: ...Schematic Diagrams 13 16 Samsung Electronics 13 15 Play ...
Page 110: ...Schematic Diagrams Samsung Electronics 13 17 13 16 Deck ...
Page 111: ...Schematic Diagrams 13 18 Samsung Electronics 13 17 Remote Control ...