Toshiba HD-A2KU User manual

HD DVD PLAYER
SERVICE MANUAL
Dec., 2006 GREEN
FILE NO. 810-200685GR
HD-A2KU
HD-A2WKU
HD-D2KU
HD-A2KC
The above models are classified as green products (*1), as indicated by the underlined serial numbers.
This Service Manual describes replacement parts for the green products. When repairing these green
product(s), use the part(s) described in this manual and lead-free solder (*2).
For (*1) and (*2), see the next page.
(HD-A2KU)
Rev.01

(*1) GREEN PRODUCT PROCUREMENT
The EC is actively promoting the WEEE & RoHS Directives that define standards for recycling
and reuse of Waste Electrical and Electronic Equipment and for the Restriction of the use of
certain Hazardous Substances. From July 1, 2006, the RoHS Directive will prohibit any market-
ing of new products containing the restricted substances.
Increasing attention is given to issues related to the global environmental. Toshiba Corporation
recognizes environmental protection as a key management tasks, and is doing its utmost to
enhance and improve the quality and scope of its environmental activities. In line with this,
Toshiba proactively promotes Green Procurement, and seeks to purchase and use products,
parts and materials that have low environmental impacts.
Green procurement of parts is not only confined to manufacture. The same green parts used in
manufacture must also be used as replacement parts.
(*2) LEAD-FREE SOLDER
This product is manufactured using lead-free solder as a part of a movement within the con-
sumer products industry at large to be environmentally responsible. Lead-free solder must be
used in the servicing and repair of this product.
WARNING
This product is manufactured using lead free solder.
DO NOT USE LEAD BASED SOLDER TO REPAIR THIS PRODUCT !
The melting temperature of lead-free solder is higher than that of leaded solder by 86°F to
104°F (30°C to 40°C). Use of a soldering iron designed for lead-based solders to repair product
made with lead-free solder may result in damage to the component and or PCB being soldered.
Great care should be made to ensure high-quality soldering when servicing this product espe-
cially when soldering large components, through-hole pins, and on PCBs as the level of heat
required to melt lead-free solder is high.

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.
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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 received.
·Dolby features manufactured under license from Dolby Laboratories. Dolby and the double-D symbol are trademarks of Dolby Laboratories.
·DTS features manufactured under license from Digital Theater Systems, Inc. U.S. Pat. No's. 5,451,942; 5,956,674; 5,974,380; 5,978,762; 6,226,616;
6,487,535 and other U.S. and world-wide patents issued and pending. "DTS" and "DTS Digital Surround" are registered trademarks of Digital Theater
Systems, Inc.
Copyright 1996, 2003 Digital Theater Systems, Inc. All Rights Reserved.
·HDMI, the HDMI logo and High-Definition Multimedia Interface are trademarks or registered trademarks of HDMI Licensing LLC.
·SHARC is a registered trademark and Melody is a trademark of Analog Devices, Inc.
·All other brand and product names mentioned in this manual are trademarks and/or registered trademarks of their respective holders.

SAFETY NOTICE
SAFETY PRECAUTIONS
LEAKAGE CURRENT CHECK
Plug the AC line cord directly into a 120V AC outlet (do
not use an isolation transformer for this check). Use an
AC voltmeter, having 5000 Ωper volt or more sensitivity.
Connect a 1500 Ω10 W resistor, paralleled by a 0.15 µF
150V AC capacitor between a known 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 Ωresistor.
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. A reading
exceeding 0.3 V indicates that a dangerous potential
exists, the fault must be located and corrected.
Repeat the above test with the DVD PLAYER power plug
reversed.
NEVER RETURN A DVD PLAYER TO THE CUS-
TOMER WITHOUT TAKING NECESSARY CORREC-
TIVE ACTION.
READING SHOULD NOT EXCEED 0.3V
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 a risk of electric shock to persons.
The 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.
Test all exposed metal.
Voltmeter Hook-up for Leakage Current Check
DVD PLAYER AC VOLTMETER
(5000 Ωper volt
or more sensitivity)
Good earth ground
such as a water pipe,
conduit, etc.
1500 Ω
10 W
0.15 µF 150V AC
AC OUTLET

SECTION 2
PART REPLACEMENT PROCEDURES
SECTION 3
SERVICING DIAGRAMS
1. CIRCUIT SYMBOLS AND
SUPPLEMENTARY EXPLANATION
1-1. Precautions for Part Replacement
1-2. Solid Resistor Indication
1-3. Capacitance Indication
1-4. Inductor Indication
1-5. Waveform and Voltage Measurement
1-6. Others
2. PRINTED WIRING BOARD AND
SCHEMATIC DIAGRAM
3. BLOCK DIAGRAMS
4. CIRCUIT DIAGRAMS
4-1. Power Supply Circuit Diagram
4-1-1. Power Supply Circuit Diagram (Type A)
4-1-2. Power Supply Circuit Diagram (Type B)
4-2. Front Circuit Diagram
4-2-1. Front FIP Circuit Diagram
4-2-2. Power Switch Circuit Diagram
4-2-3. Front Switch/USB Circuit Diagram
4-3. ATAPI Conversion Circuit Diagram
4-4. Main Circuit Diagram
4-4-1. AV Output Circuit Diagram
4-4-2. Timer Circuit Diagram
5. PC BOARDS
5-1. Front FIP PC Board
5-2. Power Switch PC Board
5-3. Front Switch/USB PC Board
5-4. ATAPI PC Board
CONTENTS
SECTION 1
GENERAL DESCRIPTIONS
1. OPERATING INSTRUCTIONS
1. REPLACEMENT OF MECHANICAL PARTS
1-1. Front Panel, Front PC Boards
1-2. Main/Power PC Boards
1-3. DVD Drive
2. WIRING CONNECTION DIAGRAM
2. LOCATION OF MAIN PARTS
2-1. Location of Main Parts
2-2. Location of PC Boards
SECTION 4
PARTS LIST
SAFETY PRECAUTION
NOTICE
ABBREVIATIONS
1. EXPLODED VIEWS
1-1. Packing Assembly
1-2. Chassis Assembly

SECTION 1
GENERAL DESCRIPTIONS
1. OPERATING INSTRUCTIONS
Please refer to the owner's manual about the contents.
SECTION 1
GENERAL DESCRIPTIONS

2. LOCATION OF MAIN PARTS
2-1. Location of Main Parts
Fig. 1-2-1
2-2. Location of PC Boards
Fig. 1-2-2
FAN
DVD DRIVE
Main PC board
Power PC board
ATAPI PC board
Front FIP PC board
Front switch/USB PC board
Power switch PC board

Note:
• Circled numbers in the figure show the main disassembly procedure. Refer to them when disassembling.
• This section describes how to replace the parts of HD-A2KU as a representative.
1-1. Front Panel, Front PC Boards
Fig. 2-1-1
SECTION 2
CHASSIS OF MAIN PARTS
SECTION 2
PART REPLACEMEANT PROCEDURES
CAUTIONS BEFORE STARTING PART REPLACEMENT
Electronic parts are susceptible to static electricity and may easily damaged, so do not forget to ground as required.
Many screws are used inside the unit. To prevent the screws from missing or dropping, etc. always use a magnetized
screwdriver in servicing. Several kinds of screws are used and some of them need special cautions. That is, take care of
the tapping screws securing molded parts and fine pitch screws used to secure metal parts. If they are used improperly,
the screw holes will be easily damaged and the parts can not be fixed.
1. REPLACEMENT OF MECHANICAL PARTS
FRONT PANEL
POWER SWITCH PC BOARD
2
5
8
9
710
11
6
5
3
4
1
FRONT SWITCH/USB PC BOARD
FRONT FIP PC BOARD

1-2. Main/Power PC Boards
Fig. 2-1-2
POWER PC BOARD
MAIN PC BOARD
1
1
7
7
3
5
9
11
10
9
9
9
10
10
9
12
62
4
4
8
FAN

1-3. DVD Drive
Fig. 2-1-3
DVD DRIVE
ATAPI PC BOAD
7
2
1
6
3
4
5
1
1