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FILE NO. 810-200107
SERVICE MANUAL
DIGITAL VIDEO
DVD VIDEO PLAYER
SD-200X
Jul., 2001 5
LASER BEAM CAUTION LABEL
When the power supply is being turned on, you may not remove this laser cautions label. If it removes, radiation of a laser
may be recceived.
PREPARATION OF SERVICING
Pickup Head consists of a laser diode that is very susceptible to external static electricity.
Although it operates properly after replacement, if it was subject to electrostatic discharge during replacement,
its life might be shortened. When replacing, use a conductive mat, soldering iron with ground wire, etc. to
protect the laser diode from damage by static electricity.
And also, the LSI and IC are same as above.
Ground conductive
wrist strap for body.
Soldering iron
with ground wire
or ceramic type
1M 9
Conductive mat
The ground resistance
between the ground line
and the ground is less than 10 9 .
CONTENTS
SECTION 1
GENERAL DESCRIPTIONS
1. OPERATING INSTRUCTIONS 3. TROUBLESHOOTING
Specifications 3-1. Main Circuit
2. LOCATION OF MAIN PARTS AND 3-1-1. Servo System
MECHANISM PARTS 3-1-2. Location Diagram of Servo Test Point
2-1. Location of Main Parts
2-2. Location of Mechanism Parts
SECTION 2
PART REPLACEMENT AND ADJUSTMENT PROCEDURES
1. REPLACEMENT OF MECHANICAL PARTS 1-3. Mechanism Parts
1-1. Cabinet Replacement 1-3-1. Mechanism Chassis Assembly
1-1-1. Top Cover 1-3-2. Loading Belt
1-1-2. Clamper Stay 1-3-3. Loading Motor
1-1-3. Tray Panel 1-3-4. Sub Chassis (with a pickup mechanism)
1-1-4. Front Panel and Tray 1-3-5. Pickup Mechanism Assembly
1-1-5. Rear Panel 1-3-6. Gear A Assembly, Gear B and
1-2. PC Board Replacement Rack Gear Assembly
1-2-1. Main PC Board 1-3-7. Feed Motor
1-2-2. Power PC board
1-2-3. Front PC Board
SECTION 3
SERVICING DIAGRAMS
1. STANDING PC BOARDS FOR SERVICING 5. CIRCUIT DIAGRAMS
2. CIRCUIT SYMBOLS AND 5-1. Power Supply Circuit Diagram
SUPPLEMENTARY EXPLANATION 5-2. Front Display, Power Switch Circuit Diagram
2-1. Precautions for Part Replacement 5-3. Main Circuit Diagram
2-2. Solid Resistor Indication 5-4. Motor System Circuit Diagrams
2-3. Capacitance Indication 6. PC BOARDS
2-4. Inductor Indication 6-1. Power Supply PC Board
2-5. Waveform and Voltage Measurement 6-2. Power Switch PC Board
2-6. Others 6-3. Main PC Board
3. PRINTED WIRING BOARD AND 6-4. Front Display PC Board
SCHEMATIC DIAGRAM
4. BLOCK DIAGRAMS
4-1. Overall Block Diagram
4-2. Power Supply Block Diagram
4-3. Front Display, Power Switch Block Diagram
4-4. Main Block Diagrams
SECTION 4
PARTS LIST
SAFETY PRECAUTION 4. EXPLODED VIEWS
NOTICE 4-1. Packing Assembly
ABBREVIATIONS 4-2. Chassis Assembly
1. Integrated Circuit (IC) 4-3. Mechanism Assembly
2. Capacitor (Cap) 5. PARTS LIST
3. Resistor (Res)
GENERAL DESCRIPTIONS
SECTION 1
SECTION 1
GENERAL DESCRIPTIONS
1. OPERATING INSTRUCTIONS
Introduction
SAFETY PRECAUTIONS
The lightning flash with arrowhead symbol, within an equilat-
WARNING eral triangle, is intended to alert the user to the presence of
RISK OF ELECTRIC SHOCK
DO NOT OPEN uninsulated "dangerous voltage" within the product's enclo-
RISQUE DE CHOC ELECTRIQUE NE sure that may be of sufficient magnitude to constitute a risk
AVIS PAS OUVRIR of electric shock to persons.
WARNING : TO REDUCE THE RISK OF The exclamation point within an equilateral triangle is in-
ELECTRIC SHOCK, DO NOT REMOVE
COVER (OR BACK). NO USERSERVICEABLE tended to alert the user to the presence of important operat-
PARTS INSIDE. REFER SERVICING TO ing and maintenance (servicing) instructions in the literature
QUALIFIED SERVICE PERSONNEL.
accompanying the appliance.
The symbol for CLASS II (Double Insulation)
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE
TO RAIN OR MOISTURE. DANGEROUS HIGH VOLTAGES ARE PRESENT INSIDE THE
ENCLOSURE. DO NOT OPEN THE CABINET. REFER SERVICING TO QUALIFIED PERSONNEL
ONLY.
CAUTION: This Digital Video Disc Player employs a Laser System.
To ensure proper use of this product, please read this owner's manual carefully and retain for
future reference. Should the unit require maintenance, contact an authorized service location -
see service procedure.
Use of controls or adjustments or performance of procedures other than those specified herein
may result in hazardous radiation exposure.
To prevent direct exposure to laser beam, do not try to open the enclosure.
Visible laser radiation when open and interlocks defeated.
DO NOT STARE INTO BEAM.
FCC NOTICE: This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rule. These limits are designed to provide reasonable protection
against harmful interference in a residential installation.
This equipment generates, uses, and can radiate radio frequency energy and, if not installed
and used in accordance with the instructions, may cause harmful interference to radio
communications.
However, there is no guarantee that interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
- Consult the dealer or an experienced radio/TV technician for help.
WARNING: Changes or modifications made to this equipment, not expressly approved by Toshiba, or parties
authorized by Toshiba, could void the user's authority to operate the equipment.
2
The instructions shall state that an ALL-POLE MAINS SWITCH with a contact separation of at least 3 mm in
each pole shall be incorporated in the electrical installation of the building.
CAUTION: These servicing instructions are for use by qualified service personnel only. To reduce the risk of
Introduction
electric shock do not perform any servicing other than that contained in the operating
instructions unless you are qualified to do so.
In the spaces provided below, record the Model and Serial No. located on the rear panel of your DVD video
player.
Model No. Serial No.
Retain this information for future reference.
Location of the required label
WARNING
TO REDUCE THE RISK OF ELECTRIC SHOCK.
DO NOT REMOVE COVER. REFER SERVICING
TO QUALIFIED SERVICE PERSONNEL.
TOSHIBA CORPORATION
3
Introduction
IMPORTANT SAFETY INSTRUCTIONS
CAUTION: PLEASE READ AND OBSERVE ALL WARNINGS AND INSTRUCTIONS GIVEN IN THIS
OWNER'S MANUAL AND THOSE MARKED ON THE UNIT. RETAIN THIS BOOKLET FOR
FUTURE REFERENCE.
This set has been designed and manufactured to assure personal safety. Improper use can result in electric
shock or fire hazard. The safeguards incorporated in this unit will protect you if you observe the following
procedures for installation, use and servicing. This unit is fully transistorized and does not contain any parts that
can be repaired by the user.
DO NOT REMOVE THE CABINET COVER, OR YOU MAY BE EXPOSED TO DANGEROUS VOLTAGE.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL ONLY.
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with dry cloth.
4
7. Do not block any ventilation openings. Install in accordance with the
manufacturer's instructions.
Introduction
8. Do not install near any heat sources such as radiators, heat registers, stoves,
or other apparatus (including amplifiers) that produce heat.
9. Protect the power cord from being walked on or pinched particularly at plugs,
convenience receptacles, and the point where they exit from the apparatus.
10. Only use attachments/accessories specified by the manufacturer.
11.Use only with the cart, stand, tripod, bracket, or table specified by the
manufacturer, or sold with the apparatus. When a cart is used, use caution
when moving the cart/apparatus combination to avoid injury from tip-over.
S3125A
12. Unplug this apparatus during lightning storms or when unused for long periods
of time.
5
Introduction
IMPORTANT SAFETY INSTRUCTIONS
13. Refer all servicing to qualified service personnel. Servicing is required when
the apparatus has been damaged in any way, such as power-supply cord or
plug is damaged, liquid has been spilled or objects have fallen into the
apparatus, the apparatus has been exposed to rain or moisture, does not
operate normally, or has been dropped.
14. When you use headphones, keep the volume at a moderate level. If you use
the headphones continuously with high volume sound, it may cause hearing
damage.
15. Do not overload wall outlets; extension cords, or integral convenience
receptacles as this can result in a risk of fire or electric shock.
16. Never insert objects of any kind into this apparatus through openings as they
may touch dangerous voltage points or short-out parts that could result in a
fire or electric shock. Never spill liquid of any kind on the apparatus.
17. Keep your fingers well clear of the disc tray as it is closing. Neglecting to do
so may cause serious personal injury.
6
18. Do not place a heavy object on or step on the apparatus. The object may fall,
causing serious personal injury and serious damage to the apparatus.
Introduction
19. Do not use a cracked, deformed, or repaired disc. These discs are easily
broken and may cause serious personal injury and apparatus malfunction.
7
Introduction
Precautions
Notes on handling Notes on moisture condensation
When shipping the DVD video player, the original Moisture condensation damages the DVD video
shipping carton and packing materials come in handy. player. Please read the following carefully.
For maximum protection, repack the unit as it was
Moisture condensation occurs, for example, when you
originally packed at the factory.
pour a cold drink into a glass on a warm day. Drops of
Do not use volatile liquids, such as insect spray, near
water form on the outside of the glass. In the same way,
the DVD video player. Do not leave rubber or plastic
moisture may condense on the optical pick-up lens
products in contact with the DVD video player for a
inside this unit, one of the most crucial internal parts of
long time. They will leave marks on the finish.
the DVD video player.
The top and rear panels of the DVD video player may
le of mo
become warm after a long period of use. This is not a Examp ensat isture
cond ion!
malfunction.
When the DVD video player is not in use, be sure to
remove the disc and turn off the power.
If you do not use the DVD video player for a long Optical pick-up
lens
period, the unit may not function properly in the
future. Turn on and use the DVD video player
occasionally. Moisture condensation occurs during the
following cases.
When you bring the DVD video player directly from a
Notes on locating cold place to a warm place.
When you use the DVD video player in a room where
Place the DVD video player on a level surface. Do not you just turned on the heater, or a place where the
use it on a shaky or unstable surface such as a cold wind from the air conditioner directly hits the unit.
wobbling table or inclined stand. The loaded disc may In summer, when you use the DVD video player in a
come off the proper position and cause damage to hot and humid place just after you move the unit from
the DVD video player. an air conditioned room.
When you place this DVD video player near a TV, When you use the DVD video player in a humid place.
radio, or VCR, the playback picture may become poor
and the sound may be distorted. In this case, place
It's too
the DVD video player away from the TV, radio, or warm!
VCR.
Notes on cleaning
Use a soft, dry cloth for cleaning.
For stubborn dirt, soak the cloth in a weak detergent
solution, wring well and wipe. Use a dry cloth to wipe Do not use the DVD video player when moisture
it dry. condensation may occur.
Do not use any type of solvent, such as thinner and If you use the DVD video player in such a situation, it
benzine, as they may damage the surface of the DVD may damage discs and internal parts. Remove the
video player. disc, connect the power cord of the DVD video player
If you use a chemical saturated cloth to clean the unit, to the wall outlet, turn on the DVD video player, and
follow that product's instructions. leave it for two or three hours. After two or three
hours, the DVD video player will have warmed up and
evaporated any moisture. Keep the DVD video player
To obtain a clear picture connected to the wall outlet and moisture
condensation will seldom occur.
The DVD video player is a high technology, precision
device. If the optical pick-up lens and disc drive parts Wa
are dirty or worn down, the picture quality becomes it!
Wall outlet
poor. To obtain a clear picture, we recommend regular
inspection and maintenance (cleaning or parts
replacement) every 1,000 hours of use depending on
the operating environment. For details, contact your
nearest dealer.
8
Notes on Discs
On handling discs Structure of disc contents
Introduction
Do not touch the playback side of the disc. Normally, DVD video discs are divided into titles, and
the titles are sub-divided into chapters. VIDEO CDs and
audio CDs are divided into tracks.
DVD video disc
DVD video disc
Title 1 Title 2
Chapter 1 Chapter 2 Chapter 1 Chapter 2 Chapter 3
Playback side
Do not attach paper or tape to discs.
VIDEO CD/audio CD
VIDEO CD/audio CD
Track 1 Track 2 Track 3 Track 4 Track 5
On cleaning discs
Fingerprints and dust on the disc cause picture and
sound deterioration. Wipe the disc from the center Each title, chapter or track is assigned a number, which
outwards with a soft cloth. Always keep the disc is called "title number", "chapter number" or "track
clean. number" respectively.
There may be discs that do not have these numbers.
Notes on copyright
It is forbidden by law to copy, broadcast, show,
broadcast on cable, play in public, and rent copyrighted
If you cannot wipe off the dust with a soft cloth, wipe material without permission.
the disc lightly with a slightly moistened soft cloth and
finish with a dry cloth. DVD video discs are copy protected, and any recordings
Do not use any type of solvent such as thinner, made from these discs will be distorted.
benzine, commercially available cleaners or antistatic
spray for vinyl LPs. It may damage the disc. This product incorporates copyright protection
technology that is protected by method claims of certain
U.S. patents and other intellectual property rights owned
On storing discs by Macrovision Corporation and other rights owners.
Use of this copyright protection technology must be
Do not store discs in a place subject to direct sunlight authorized by Macrovision Corporation, and is intended
or near heat sources. for home and other limited viewing uses only unless
Do not store discs in places subject to moisture and otherwise authorized by Macrovision Corporation.
dust such as a bathroom or near a humidifier. Reverse engineering or disassembly is prohibited.
Store discs vertically in a case. Stacking or placing
objects on discs outside of their case may cause
warping.
9
Introduction
Notes on Discs (continued)
About this owner's manual Playable discs
This owner's manual explains the basic instructions of This DVD video player can play the following discs.
this DVD video player. Some DVD video discs are
produced in a manner that allows specific or limited Disc Maximum
Disc Mark Contents Size playback time
operation during playback. As such, the DVD video
player may not respond to all operating commands. This Approx. 4 hours
is not a defect in the DVD video player. Refer to (single sided disc)
instruction notes of discs. 12 cm
Audio Approx. 8 hours
" " may appear on the TV screen during operation. + (double sided disc)
DVD video
A " " means that the operation is not permitted by the video (moving
DVD video player or the disc. discs pictures) Approx. 80 minutes
(single sided disc)
8 cm
Notes on region numbers Approx. 160 minutes
(double sided disc)
The region number of this DVD video player is 4. If
region numbers, which stand for their playable area, are
printed on your DVD video disc and you do not find 4 12 cm Approx. 74 minutes
Audio
or ALL , disc playback will not be allowed by the player. +
VIDEO
(In this case, the DVD video player will display a video
CDs (moving
message on-screen.) DIGITAL VIDEO
pictures)
8 cm Approx. 20 minutes
On VIDEO CDs
This DVD video player supports VIDEO CDs equipped 12 cm Approx. 74 minutes
with the PBC (Version 2.0) function. (PBC is the Audio
Audio
abbreviation of Playback Control.) You can enjoy two CDs 8 cm
playback variations depending on types of discs. (CD Approx. 20 minutes
single)