Panasonic SL-DV100 User manual

©1999 Matsushita Electric Industrial Co., Ltd. All
rights reserved. Unauthorized copying and
distribution is a violation of law.
SL-DV100
Colour
(S)....................Silver Type
Area
(GK).................China.
DVD Changer
AD9908191C3

1 Note 2
2 Handling Precautions for Traverse Deck 2
2.1. Handling of optical pickup 2
2.2. Grounding for electrostatic breakdown prevention 2
3 Precaution of Laser Diode 3
4 Location of Controls 4
5 To Supply Power Source 5
6 What is DVD 6
7 Operation Description 11
8 Optical Pickup Self-diagnosis and Replacement Procedure
13
9 Self-Diagnosis and Service Modes 14
10 Operation Checks and Component Replacement Procedures
16
11 Schematic Diagram 33
11.1. Schematic Diagram Notes 33
The lase diode in the optical pickup may break down due to
potential difference caused by static electricity of clothes or
1.Do not subject the optical pickup to static electricity as it is
extremely sensitive to electrical shock.
2.To prevent the breakdown of the laser diode, an antistatic
shorting pin is inserted into the flexible board (FPC board).
When removing or connecting the short pin, finish the job in
as short time as possible.
3.Be careful not to apply excessive stress to the flexible board
(FPC board).
4.Do not turn the variable resistor (Laser power adjustment).
Use the antistatic wrist strap to discharge the static electricity
from your body.
11.2. Schematic Diagram 34
12 Wiring Connection Diagram 50
13 Printed Circuit Board Diagram 51
14 Type Illustration of ICs, Transistors and Diodes 57
15 Block Diagram 58
16 Terminal Function of ICs 63
16.1. IC401 (M38504M6201F) : System Control 63
17 Abbreviations 64
18 Optical Pickup Tilt Adjustments 66
19 Electrical Adjustment 69
20 Replacement Parts List 70
21 Cabinet Parts Location 77
22 Loading Unit Parts Location 78
23 Traverse Unit Parts Location 79
human body.
CONTENTS
Page Page
1 Note
Refer to the service manual for Model No. SA-DV100 (ORDER No. AD9908189C3) for information on Accessories,
Connections, Installation, Operations and Packaging.
2 Handling Precautions for Traverse Deck
2.1. Handling of optical pickup
2.2. Grounding for electrostatic breakdown prevention
2.2.1. Human body grounding
2
SL-DV100

Put a conductive material (sheet) or steel sheet on the area
where the optical pickup is placed and ground the sheet.
Caution:
This unit utilizes a class 1 laser. Invisible laser radiation is
emitted from the optical pickup lens when the unit is turned
on:
1.Do not look directly into the pickup lens.
2.Do not use optical instruments to look at the pickup lens.
3.Do not adjust the preset variable resistor on the optical
pickup.
4.Do not disassemble the optical pickup unit.
5.If the optical pickup is replaced, use the manufacture´s
specified replacement pickup only.
6.Use of control or adjustment or performance of procedures
other than those specified herein may result in hazardous
radiation exposure.
Caution:
The static electricity of your clothes will not be grounded
through the wrist strap. So take care not to let your clothes
touch the optical pickup.
2.2.2. Work table grounding
3 Precaution of Laser Diode
3
SL-DV100

4 Location of Controls
4
SL-DV100

Caution:
·It is very dangerous to look at or touch the laser
beam.(Laser radiation is invisible.)
With the unit turned on, laser radiation is emitted from
the pickup lens.
·Avoid exposure to the laser beam, especially when
performing adjustments.
This unit SL-DV100 is designed to operate on power
supplied form the system connected. For system
connection, refer to Fig.1.
Fig.3.
Notes:
Use only this method when checking the voltage etc..
In case of checking operations, use the system
connections to supply power source.
Fig.1.
When the unit SL-DV100 has to test and service alone, use
the following method to supply power source.
1.Short the JK1-3 pin,JK1-6 pin,JK1-10 and JK1-17.
Refer to Fig.2.
2.Connect a DC power supply to JK1-5 pin and . Then
adjust the output to 10 V. Refer to Fig.3.
5 To Supply Power Source
Fig.2.
5
SL-DV100

6 What is DVD
TIntroduction
Through a variety of media such as TVs, videos, radios, stereos, newspapers and magazines, we enjoy movies and music and obtain information
every day.
Personal computers have become essential to our daily lives. We are surrounded by an abundance of sound, information and images.As a result,
there is a need for a medium that can accommodate such a vast amount of information easily and in a compact form. To meet this demand, the DVD
has been created.
DVD, which stands for Digital Versatile Disc, is expected to have a wide array of applications including a DVD-Video, which records visual images
such as movies; a DVD-Audio for music; a DVD-ROM for computer use; and a DVD-RAM for rewritable media.
Analog Audio
Analog disc RCompact cassette tape
Digital Audio
CD RDAT
Digital Video
Video-CD
Analog Video
Video cassette tape RLD
The
Next
Generation
DVD
TTypes of DVD
The DVD has two major formats: a Read-only format and a Recordable format.
The recordable format can be divided into a write-once type and a rewritable type.
These discs have different recording method. Therefore, not all equipment is compatible with these formats.
Read only
Recording method
Pit recording (same as CDs)
Disc types
DVD-Video, DVD-Audio, DVD-ROM
Write-once
Recording method
Organic dye recording
Disc types
DVD-R
Rewritable
Recording method
Phase change recording
Disc types
DVD-RAM
Compatible list for Panasonic products
SC-DV100 SA-DK1 near future
DVD-Video øøø
DVD-Audio qqø
DVD-ROM qqq
DVD-R qqq
DVD-RAM qqq
CD-DA øøø
CD-ROM qqq
CD-R qqq
Video-CD øøø
Dolby digital øøø
dts qqø
MPEG Audio øøø
SL-DV100
6

TDisc Configuration (Read only)
The DVD-ROM disc is designed so that two thin discs are pasted together. The result is that both sides can be recorded on. Also, by employing a
transparent adhesive and a semi-transparent reflective film, a dual-layer configuration recording method has been achieved which allows both
sides of a disc to be played using a single pick-up on one side.
The appearance of the DVD is identical to the CD, and many DVD players are compatible with CDs.
Disc configuration and recording capacity
configration single-layer single-layer dual-layer dual-layer
single sided double sided single sided double sided
capacity 4.7 GB 9.4 GB 8.5 GB 17 GB
Dual-layer , single sided disc
substrate
full-reflective film
protective film
bonding agent
protective film
semi-reflective film
substrate
substrate
Dual-layer , double sided disc
semi-reflective film
spacing
full-reflective film
protective film
bonding agent
protective film
full-reflective film
spacing
semi-reflective film
substrate
SL-DV100
7

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
TOpticals 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

TRecording Time
To meet the demands of a Hollywood film production company, one film must fit onto a single disc while keeping the movie's image quality and audio
quality high.
To achieve this, we compress video images using MPEG2 technology, sub-video
images (superimposed) using run length coding compression; produce high-quality audio using linear PCM, Dolby Digital AC-3, DTS and MPEG
audio; and make the surround system recordable. The resulting recording time is about 133 minutes.
Approximately 93% of Hollywood movies can each be recorded on one disc.
Video image 3.5 Mbit / sec
Audio 1152 kbit / sec
Sub-video image 40 kbit / sec
Total 4.692 Mbit / sec
The recording capacity of a disc is 4.7 GB, so:
4700 Mbyte q8 s(4.692 Mbit/sec q60 second ) = 133.5 minutes
Therefore, one side of a disc can record about 133 minutes.
TKey of High Image Quality
Thanks to MPEG2, the digital image compression technology, you can enjoy a DVD-Video movie which features the same image quality as that of
a film shown in a theater. MPEG2 is the technology that superseded the MPEG1, which is employed in video CDs. MPEG2 technology produces a
higher level of image quality.
DVD Video-CD
Video compression MPEG2 MPEG1
Number of pixels (NTSC) 720 q 480 352 q 240
Number of pixels (PAL) 720 q 576 352 q 288
Holizontal resolution more than 500 lines 240 lines
Cording bit rate variable / constant constant
Frame rate 30 frame / sec 30 frame / sec
(60 field / sec) –––
Max. data transfer late 10.08 Mbit / s 1.15 Mbit / s
Average date transfer rate 3.5 Mbit / s 1.15 Mbit / s
Playback time 133 min. (1 layer / 1 sided) 74 minutes
480 min. (2 layer / 2 sided) –––
subtitles 32 subtitles –––
other multi aspect ratio –––
For example, below is one of the actually bit rate of DVD.
SL-DV100
9

TPrinciple of MPEG2
1. Reads and records the basic screen image from the original image.
2. Compares the read screen image with the next screen image, and records only
the information about the changed parts and hou much and which direction are
changed.
3. As needed, estimates and records the changing information (data) rather than
the changed information.
4. Play backs the basic screen image and the image made from the changed data
with inserting the image made from the estimated changing data.
With this process, a highly precise and smooth-moving image can be played
back.
TPrinciple of Run Length Compression
To reduce the volume of information, the sub-video image such as superimposition is processed using a
compression method called run length coding.
When a letter is expressed using the digital signal with one pixel each (blank areas where there is no
letter are expressed as "0" and shaded areas where there is a letter are expressed as "1"), there is a
series of "0"s and "1"s which is repeated as shown below. In such cases, it is possible to code how many
"0"s follow and "1"s follow, and thereby reduce the volume of information.
Blank areas where there is no letter are expressed as "0" and shaded areas where there is a letter as "1".
Data between a - a' 00000000111100000000
Data between b - b' 00000011100011100000
Data between c - c' 00001111111111110000
Basic screen image
Time passes
Basic screen image
Changed section
Estimation based on
the changed section
Playback image
Basic screen image Screen image made
based on estimations Screen image made based on changed section
SL-DV100
10