- 5 -
FOCUS DRV.
IC601 25pin
FE
TP513
TE
TP512
SLED
IC601 20pin
VRA
①
⑤
③
②
④
⑥
The orientation that optical lens
DiskDistinction
FServoCLV ON
pick return play (If there is pick in perimeter of a circle,
there is it, and time of bottom gets longer)
TServo ON
(Actuating description)
1. After turning on the power or inserting a disk, this DVD Assy starts to perform a disk identification operation.
1) Sets the circuit to the DVD mode, returns the pickup, lowers the lens an lights the LASER lamp.
The pickup return, lens operation and LASER lamp illumination are visuall recognizable.(spindle kick)
2) In PU mode (CD), raises the lens.
Focus level measurement (A), judges the FE pulse whether to be 1 or 2.
3) In PU mode (DVD), lowers the lens.
Focus level measurement (B).
4) Judgment pulse 2 : DVD two-layer disk,
(B)/(A)>1.5 : DVD one-layer disc.
Other than the above condition : CD
5) Sets the circuit to the PU mode (based on the above disk judgment, the circuit is set to the PU mode)
6) Servo attracting operation (servo turns on):CLV turns on in the same way as a CD player.
CD
DVD
one-layer
disk
DVD
t w o - l a y e r
disk
Two Focus err.
DVD P.W.BOARD OPERATION
level difference
Disc distinction
Disc distinction
Disc distinction
Disc distinction
Disc distinction
Zoom
Disc distinction
Focus point
Don’t Servo on
Servo on
Focus error signal
(
lens distant
→
near
)
Image
Содержание FISHER DVD-1500 AU
Страница 42: ... 55 MPEG P W BOARD CHECK WAVEFORM 1 2 3 4 5 6 Indicate each signaling in schematic diagram of MPEG P 58 ...
Страница 44: ... 57 MPEG P W BOARD CHECK WAVEFORM 8 9 10 11 12 ...
Страница 65: ... 82 WIRING DIAGRAM DVD A SIDE ...
Страница 66: ... 83 WIRING DIAGRAM DVD B SIDE ...
Страница 67: ... 86 WIRING DIAGRAM MPEG A SIDE for AU ...
Страница 68: ... 87 WIRING DIAGRAM MPEG B SIDE for AU ...
Страница 69: ... 90 WIRING DIAGRAM MPEG A SIDE for US ...
Страница 70: ... 91 WIRING DIAGRAM MPEG B SIDE for US ...
Страница 72: ... 97 AMP for AU WIRING DIAGRAM AMP AMP for US ...
Страница 74: ...SANYO Technosound Co Ltd Osaka Japan Jun 00 2550 BB Printed in Japan ...