Circuit Descriptions
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 MIRR and TZC signal of SIC1-38, 52.
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 DV-P303U
Page 29: ...Reference Information 2 22 MEMO ...
Page 31: ...Product Specification 3 2 MEMO ...
Page 49: ...5 14 Disassembly and Reaasembly MEMO ...
Page 69: ...Circuit Descriptions 6 20 MEMO ...
Page 79: ...Troubleshooting 7 10 MEMO ...
Page 80: ...8 1 8 Exploded View 8 1 Cabinet Assembly 8 2 Deck Assembly Page 8 2 8 3 ...
Page 82: ...8 3 Exploded Views 8 2 Deck Assembly 107 906 ...
Page 83: ...Exploded Views 8 4 MEMO ...
Page 85: ...9 2 Replacement Parts List MEMO ...
Page 87: ...PCB Diagrams 1 11 1 Main COMPONENT SOLDER SIDE ...
Page 88: ...PCB Diagrams 2 11 2 Jack ...
Page 89: ...PCB Diagrams 3 11 3 Key 11 4 Deck ...
Page 90: ...12 1 12 Wiring Diagram ...
Page 91: ...Wiring Diagram 12 2 MEMO ...
Page 93: ...Schematic Diagrams 13 2 13 1 Power ...
Page 94: ...Schematic Diagrams 13 3 13 2 Main Micom ...
Page 95: ...Schematic Diagrams 13 4 13 3 Servo ...
Page 96: ...Schematic Diagrams 13 5 13 4 Video ...
Page 97: ...Schematic Diagrams 13 6 13 5 Audio ...
Page 98: ...Schematic Diagrams 13 7 13 6 RF ...
Page 99: ...Schematic Diagrams 13 8 13 7 ZiVA ...
Page 100: ...Schematic Diagrams 13 9 13 8 DSP ...
Page 101: ...Schematic Diagrams 13 10 13 9 Front Micom VFD Display ...
Page 102: ...Schematic Diagrams 13 11 13 10 Key ...
Page 103: ...Schematic Diagrams 13 12 13 11 Deck ...
Page 104: ...Schematic Diagrams 13 13 13 12 Remote Control ...
Page 105: ...Schematic Diagrams 13 14 MEMO ...
