- 8 -
Depress open/close
switch.
Place a disk
on tray.
Tray close/closed
Tray opens.
"LASER" lights.
Lowers lens
(approx. 400 ms).
Pickup returns.
INIT processing of
TC9461
Laser off 20 ms
Lowers lens
Rotates SPINDLE at
a speed of twice
that of CD.
Waits for prescribed
number of rotations
to be completed.
Checks FG.
STOP
YES
NO
DVD
CD
(b)/(a)>1.5
FE pulses;
one or two
One-layer DVD
Sets one-layer
DVD circuit
to pickup mode.
Sets two-layer
DVD circuit to
pickup mode
Sets CD circuit
to pickup mode.
YES
NO
2
1
DVD/CD
DVD
CD
Measures error rate
Error judgement
OK
NG
OK
OK
OK
OK
NG
NG
NG
NG
CD
CD/DVD
Optimization
CD
DVD
Turn on power.
Depress open/close
switch.
Two-layer DVD
Laser on.
DVD/CD
Aligns tracking balance
Error judgement
EQB
Error judgement
EQF
Error judgement
Error judgement
Aligns tracking balance
TIME OUT:ERR.
Raises lens.
FOCUS OK?
SPINDLE motor
turns on.
8/12 cm
identification.
FG confirmation
Rotates at a speed of
approx. 0.7 time
that of CD
Waits for approx. 500 ms.
New disk?
Layer jump
Old
New
Tracking balance alignment
Rotates at a speed of twice that of CD.
Waits for 100 ms.
Lowers lens with
each IC in DVD mode
Measures FE level (a)
FE pulse 1 or 2
Lowers lens with in
LCD and DVD mode
Rotates at
a speed of two times
that of CD
Measures FE level (a)
TRACKING ON
SLED OFF
Sets to normal speed.
ADDRESS CHECK
200ms wait
Focus balance alignment
Focus gain alignment
Tracking gain alignment
SLED ON
RF gain alignment
100ms wait
One-layer or
two-layer
Two-layer
completed
One-layer
Two-layer completed
Measures p
oor playability varlue
READ-IN play
CD : TOC READ
DVD : CSS processing
Pickup moves outward.
Optimization
Wait to PLAYBACK
DVD P.W.BOARD OPERATION
(GENERAL FLOW)
This is a basic flowchart.
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 ...