Outer appearance
Thick:
1.2 mm (0.6 mm x 2)
Diameter:
120 mm
Center hole diameter: 15 mm
Signal recording section
Pit recording (same method as used for CDs)
(case of CD)
Minimum pit size
0.4
¨
m
(0.9
¨
m)
Track pitch
0.74
¨
m
(1.6
¨
m)
Controller
CLV
(CLV)
Signal recording side of DVD
Signal recording side of CD
T
Opticals and Servo Control
In order to increase recording time, the signals are recorded highly compressed on the disc. The signals are all converted to digital signals and
recorded by producing concave and convex areas on the disc as a replacement for 0 and 1. These concave and convex areas are called pits. The
pits are lined up in so-called tracks that spiral from the center to the outside edge of the disc. In order to read these recorded signals, the DVD player
uses a laser diode which outputs short-wavelength light beams, and the opening ratio of the lens to gather the laser beam is set wider. Also, the
rotation of the disc is servo-controlled (CLV) to maintain a stable speed as the laser beam passes over the tracks so that the timing of the read
signals does not fluctuate. The player also uses light beams that have two focal points in order to play both DVDs and CDs because their signal
recording area positions are different.
Panasonic has recently developed and uses a Hologram-integrated aspherical lens for these Laser beams.
CD spot
DVD spot
Hologram-integrated
aspherical lens
Laser diode
Photo detector
SL-DV100
8
Summary of Contents for SL-DV100
Page 4: ...4 Location of Controls 4 SL DV100 ...
Page 11: ...7 Operation Description 11 SL DV100 ...
Page 12: ...12 SL DV100 ...
Page 13: ...8 Optical Pickup Self diagnosis and Replacement Procedure 13 SL DV100 ...
Page 14: ...9 Self Diagnosis and Service Modes 14 SL DV100 ...
Page 15: ...15 SL DV100 ...
Page 16: ...10 Operation Checks and Component Replacement Procedures 16 SL DV100 ...
Page 17: ...17 SL DV100 ...
Page 18: ...18 SL DV100 ...
Page 19: ...19 SL DV100 ...
Page 20: ...20 SL DV100 ...
Page 21: ...21 SL DV100 ...
Page 22: ...22 SL DV100 ...
Page 23: ...23 SL DV100 ...
Page 24: ...24 SL DV100 ...
Page 25: ...25 SL DV100 ...
Page 26: ...26 SL DV100 ...
Page 27: ...27 SL DV100 ...
Page 28: ...28 SL DV100 ...
Page 29: ...29 SL DV100 ...
Page 30: ...30 SL DV100 ...
Page 31: ...31 SL DV100 ...
Page 32: ...32 SL DV100 ...
Page 64: ...17 Abbreviations 64 SL DV100 ...
Page 65: ...65 SL DV100 ...
Page 66: ...18 Optical Pickup Tilt Adjustments 66 SL DV100 ...
Page 67: ...67 SL DV100 ...
Page 68: ...68 SL DV100 ...
Page 69: ...19 Electrical Adjustment 69 SL DV100 ...
Page 70: ...20 Replacement Parts List 70 SL DV100 ...
Page 78: ...22 Loading Unit Parts Location 78 SL DV100 ...
Page 79: ...23 Traverse Unit Parts Location 79 SL DV100 F990801900MT YM KH ...