- 15 -
Turns on laser.
FOCUS SEARCH
Automatic alignment
Tracking balance
Focus balance
Focus gain
Tracking gain
RF gain
DVD / CD
CD
DVD
Internal
circumference
optimization
One-layer or
two-layer
Two-layer
completed
One-layer
Two-layer completed
Layer jump
CD : TOC READ
Pickup moves outward.
DVD / CD
STOP
Two-layer
DVD
CD
DVD : CSS processing
CD PLAYBACK
(Playing CD)
Playing CD
Problem/symptom
Check
Waveform
Schematic diagram
Reference data
1
Unplayable (no sound, no picture)
Is output signal around?
(5)~(10)
D,E
2
Sound skipped
Check waveform.
(11)~(15),(33)
D,E
3
No or intermittent sound
Is spindle motor waveform normal?
1,(5)~(10)
D,E
4
No sound
Check DATA.
(4)~(6)
D,E
Poor playability
Check RF waveform (any difference from that of good unit) (2)~(4)
D,E
Surface shaking, warp
Realignment of mechanism
(11)~(15)
Scratch
Check DFTN
(40)~(43)
D,E,H
TA1254
5
DFTN:normally High, When scratched:Low
Finger print
Check DFTN
(40)~(43)
D,E,H
TA1254
DFTN:normally High, When scratched:Low
(11)~(15)
Eccentricity
Check tracking servo.
(33)
D,E,H
Is PAUSE stable?
6
Frequency response characteristics abnormal Check EMPHA.
Voltage table (11)
CHECK FLOW AND TROUBLE SHOOTING
An extract from "GENERAL FLOW"
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 ...