Toshiba SD-2300 User manual

TOSHIBA FILE NO. 810-200019
SERVICE MANUAL
0N.
'Mi ^n=TCDi*Ci
DVD VK)EO PLAYER
SD-2300
Feb.. 2001 (f)

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 alaser
may be recceived.
PREPARATION OF SERVICING
Pickup Head consists of alaser 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 aconductive mat, soldering iron with ground wire, etc. to
protect the laser diode from damage by static electricity.
And also, the LSI and 1C are same as above.

SAFETY NOTICE
SAFETY PRECAUTIONS
LEAKAGE CURRENT CHECK
Plug the AC line cord direcdy into a120V AC outlet (do
not use an isolation transformer for this check). Use an
AC voltmeter, having 5000 Qper volt or more sensitivity.
Connect a1500 Q10 Wresistor, paralleled by a0.15 [iF
150V AC capacitor between aknown good earth ground
(water pipe, conduit, etc.) and all exposed metal parts of
cabinet (antennas, handle bracket, metal cabinet
screwheads, metal overlays, control shafts, etc.).
Measure the AC voltage across the 1500 £2 resistor.
The test must be conducted with the AC switch on and
then repeated with the AC switch off. The AC voltage
indicated by the meter may not exceed 0.3 V. Areading
exceeding 0.3 Vindicates that adangerous potential
exists, the fault must be located and corrected.
Repeat the above test with the DVD VIDEO PLAYER
power plug reversed.
NEVER RETURNADVD VIDEO PLAYER TO THE
CUSTOMER WITHOUT TAKING NECESSARY
CORRECTIVE ACTION.
READING SHOULD NOT EXCEED 0.3V
Test all exposed metal.
Voltmeter Hook-up for Leakage Current Check
The lightning flash with arrowhead symbol, within an
equilateral triangle, is intended to alert the user to the
presence of uninsulated “dangerous voltage" within the
product’s enclosure that may be of sufficient magnitude to
constitute arisk of electric shock to persons.
AThe exclamation point within an equilateral triangle is
intended to alert the user to the presence of important
operating and maintenance (servicing) instructions in the
literature accompanying the appliance.

CONTENTS
SECTION 1
GENERAL DESCRIPTIONS
1. OPERATING INSTRUCTIONS
SpeciBcations
2. LOCATION OFMAIN PARTS AND
MECHANISM PARTS
2-1. Location ofMain Parts
2-2. Location ofMcchanisniParts
3. TROUBLESHOOTING
3-1. Main Circuit
3-1-1. Servo System
3-1-2. Location Diagram of Servo Test Point
SECTION 2
PART REPLACEMENT AND ADJUSTMENT WIOCEDURES
1. REPLACEMENT OFMECHANICALPARTS
1-1. Cabinet Replacement
1-1-1. Top Cover
1-1-2. Clamper Stay
1-1-3. Tray Panel
1-1-4. Ftont Panel and Tray
1-1-5. Rear Panel
1-2. PC Board Replacement
1-2-1. Main PC Board
1-2-2. Output PC Boai d
1-2-3. Power PC boar d
1-2-4. Fl'ont PC Board
1-3. Mechanism Parts
1-3-1. Mechanism Chassis Assembly
1-3-2. Loading Belt
1-3-3. Loading Motor
1-3-4. Sub Chassis (with apickup mechanism)
1-3-5. Pickup Mechanism Assembly
1-3-6. Gear BAssembly, Gear Aand
Rack Gear Assembly
1-3-7. Feed Motor
1. STANDING PC BOARDS FOR SERVICING
2. CIRCUIT SYMBOLS AND
SUPPLEMENTARY EXPLANATION
2-1. Precautions for Part Replacement
2-2. Solid Resistor Indication
2-3. Capacitance Indication
2-4. Inductor Indication
2-5. Waveform and Voltage Measurement
3. PRINTED WIRING BOARD AND
SCHEMATIC DIAGRAM
4. BLOCK DIAGRAMS
4-1. Overall Kock Diagram
4-2. Power Supply Kock Diagr am
4-3. FI ont Display, Power Switch Block Diagram
4-4. Main Kock Diagrams
4-5. Output Block Diagr am
SECTION 3
SERVICING DIAGRAMS
5. CIRCUIT DIAGRAMS
5-1. Power Strpply Circrrlt Diagram
5-2. Front Display, Power Switch Circrrlt Diagram
5-3. Main Circrrlt Diagrams
5-4. Output Circrrlt Diagram
5-
5. Motor System Circrrlt Diagr ams
6. PC BOARDS
6-
1. Power Supply PC Board
6-2. Power Switch PC Board
6-3. Main PC Board
6-4. OutputPC Boar d
6-5. Front Display PC Board
6-6. PC Game Port PC Board
SAFETY PRECAUTION
NOTICE
ABBREVIATIONS
1. Integr ated Circrrlt (IC)
2. Capacitor (Cap)
3. Resistor (Res)
SECTION 4
PARTS UST
4. EXPLODED VIEWS
4-1. Packing Assembly
4-2. Chassis Assembly
4-3. Mechanism Assembly
5. PARTS UST

SECTION 1
GENERAL DESCRIPTIONS
1. OPERATING INSTRUCTIONS
SECTION
1
GENERAL
DESCRIPTIONS

Introduction
SAFETY PRECAUTIONS
V/JililliM
RSHOFELECTRlCSrtOCH
CO NOT OPEN AA
RBQUEDECHOCELECTqOUENE
PASOUVIiVi A
WARNING :TO REDUCE THE RISK OF
ELECTRIC SHOCK, DO NOT REMOVE
COVER (OR BACK). NO USERSERVICEABLE
PARTS INSIDE. REFER SERVICING TO
OUALIRED SERVICE PERSONNEL.
The lightning flash with arrowhead symbol, within an equilat-
eral triangle, is intended to alert the user to the presence of
uninsulated “dangerous voltage" within the product's enclo-
sure that may be of sufficient magnitude to constitute arisk
of electric shock to persons.
The exclamation point within an equilateral triangle is in-
tended to alert the user to the presence of important operat-
ing and maintenance (servicing) instructions in the literature
accompanying the appliance.
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: TO PREVENT ELECTRIC SHOCK, MATCH WIDE BLADE OF PLUG TO WIDE SLOT, FULLY
INSERT.
ATTENTION: POUR EVITER LES CHOCS ELECTRIQUES, INTRODUIRE LA LAME LA PLUS LARGE DE LA
FICHE DANS LA BORNE CORRESPONDANTE DE LA PRISE ET POUSSER JUSQU’AU FOND.
CAUTION: This Digital Video Disc Player employs aLaser 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 aClass Bdigital device,
pursuant to part 15 of the FCC Rule. These limits are designed to provide reasonable protection
against harmful interference in aresidential 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 aparticular 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 acircuit 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

In the spaces provided below, record the Model and Serial No. located on the rear panel of your DVD video
player.
Retain this information for future reference.
Location of the required iabei
PRODUCT IS CERTIFIED BY THE MANUFACTURER TO
COMPLY WITH DHHS RULE 21 CFR SUBCHAPTER J
APPLICABLE AT THE DATE OF MANUFACTURE.
MANUFACTURED
TOSHIBA CORPORATION
1-1,SHIBAURA 1-CHOME,MINATO-KU.
TOKYO 105-8001,JAPAN
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.
PLEASE READ THE OWNER’S MANUAL AND EXPLAIN THE CONTENTS TO ANY CHILDREN
WHO MAY USE THIS PRODUCT.
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 owner's manual
After unpacking this product, read the owner's manual carefully, and follow
all the operating and other instructions.
2.
Power Sources
This product should be operated only from the type of power source indicated
on the label. If you are not sure of the type of power supply to your home,
consult your product dealer or local power company. For products intended
to operate from battery power, or other sources, refer to the operating
instructions.
3.
Grounding or Polarization
This product may be eguipped with apolarized alternating current line plug
(a plug having one blade wider than the other). This plug will fit into the power
outlet only one way. This is asafety feature. If you are unable to insert the
plug fully into the outlet, try reversing the plug. If the plug should still fail to fit,
contact your electrician to replace your obsolete outlet. Do not defeat the
safety purpose of the polarized plug.
4.
Ventilation
Slots and openings in the cabinet are provided for ventilation and to ensure
reliable operation of the product and to protect it from overheating, and these
openings must not be blocked or covered. The openings should never be
blocked by placing the product on a bed, sofa, rug or other similar surface.
This product should not be placed in abuilt-in installation such as abookcase
or rack unless proper ventilation is provided or the manufacturer’s instructions
have been adhered to.
5.
Heat
The product should be situated away from heat sources such as radiators,
heat registers, stoves, or other products (including amplifiers) that produce
heat.
4

6.
Water and Moisture
Do not use this product near water -for example, near abath tub, wash bowl,
kitchen sink, or laundry tub; in awet basement; or near aswimming pool and
the like.
I
7.
Cleaning
Unplug this product from the wall outlet before cleaning. Do not use liquid
cleaners or aerosol cleaners. Use adamp cloth for cleaning.
8.
Power-Cord Protection
Power-supply cords should be routed so that they are not likely to be walked
on or pinched by items placed upon or against them, paying particular attention
to cords at plugs, convenience receptacles, and the point where they exit
from the product.
9.
Overloading
Do not overload wall outlets; extension cords, or integral convenience
receptacles as this can result in arisk of fire or electric shock.
10.
Lightning
For added protection for this product during storm, or when it is left unattended
and unused for long periods of time, unplug it from the wall outlet. This will
prevent damage to the product due to lightning and power-line surges.
1 1
.
Object and Liquid Entry
Never insert objects of any kind into this product 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 product.
12.
Attachments
Do not use attachments not recommended by the product manufacturer as they may cause hazards.
5

Introduction
IMPORTANT SAFETY INSTRUCTIONS
13. Accessories
Do not place this product on an unstable cart, stand, tripod, bracket, or table.
The product may fall, causing serious injury to achild or adult, and serious
damage to the product. Use only with acart, stand, tripod, bracket, or table
recommended by the manufacturer, or sold with the product. Any mounting
of the product should follow the manufacturer's instructions, and should use
amounting accessory recommended by the manufacturer.
Aproduct and cart combination should be moved with care. Quick stops,
excessive force, and uneven surfaces may cause the product and cart
combination to overturn.
14.DiscTray
Keep your fingers well clear of the disc tray as it is closing. Neglecting to do
so may cause serious personal injury.
15. Burden
Do not place aheavy object on or step on the product. The object may fall,
causing serious personal injury and serious damage to the product.
16. Headphones
When you use headphones, keep the volume at amoderate level. If you use
the headphones continuously with high volume sound, it may cause hearing
damage.
17. Disc
Do not use acracked, deformed, or repaired disc. These discs are easily
broken and may cause serious personal injury and product malfunction.
18.
Damage Requiring Service
Unplug this product from the wall outlet and refer servicing to qualified service personnel under the following
conditions:
a) When the power-supply cord or plug is damaged.
b) If liquid has been spilled, or objects have fallen into the product.
c) If the product has been exposed to rain or water.
d) If the product does not operate normally by following the operating instructions. Adjust only those
controls that are covered by the operating instructions as an improper adjustment of other controls may
result in damage and will often require extensive work by aqualified technician to restore the product to
its normal operation.
e) If the product has been dropped or damaged in any way.
f) When the product exhibits adistinct change in performance -this indicates aneed for service.
6