For Technical Bulletins, Technical Tips, or other information regarding the
service of this model, visit the Toshiba America Consumer Products National
Service Division website at:
www7.toshiba.com
This model is classified as a green product (*1), as indicated by the underlined serial number.
This Service Manual describes replacement parts for the green product. When repairing this
green product, use the part(s) described in this manual and lead-free solder (*2).
For (*1) and (*2), refer to GREEN PRODUCT PROCUREMENT and LEAD-FREE
WARNING: Do not modify or alter the information or data provided herein without prior written consent by Toshiba.
Toshiba shall not be liable to anybody for any damages, losses, expenses or costs, if any, incurred in connection with or
as a result of such modification or alteration.
THE INFORMATION OR DATA HEREIN SHALL BE PROVIDED "AS IS" WITHOUT ANY WARRANTY OF ANY KIND, EITHER
EXPRESS OR IMPLIED WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
Toshiba shall not be liable for any damages, losses, expenses or costs, if any, incurred in connection with or as a result of
use of any information or data provided herein.
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 marketing 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.
LEAD-FREE SOLDER
WARNING:This product is manufactured using lead-free solder as a part of a movement within the consumer products industry at
large to be environmentally responsible. Lead-free solder must be used in the servicing and repair of this product.
The melting temperature of lead-free solder is higher than that of leaded solder by 86ºF to 104ºF (30ºC to 40ºC ). Use of a sold ering
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 especially when
soldering large components, through-hole pins, and on PCBs as the level of heat required to melt lead-free solder is high.
SAFETY INSTRUCTION
WARNING:Before servicing this chassis, read the "Safety Precaution" and "Product Safety Notice" instructions below.
Safety Precaution
WARNING: Servicing should not be attempted by anyone unfamiliar with the necessary precautions on this receiver. The following
are the necessary precautions to be observed before servicing this chassis.
1. An isolation transformer should be connected in the power line between the receiver and the AC line before any service is
performed on the receiver.
2. Always disconnect the power plug before any disassembling of the product. It may result in electrical shock.
3. When replacing a chassis in the cabinet, always be certain that all the protective devices are put back in place, such as
nonmetallic control knobs, insulating covers, shields, isolation resistor-capacitor network, etc.
4. Always keep tools, product components, etc. away from children as these items may cause injury.
5. Depending on the model, use an isolation transformer or wear suitable gloves when servicing with the power on.
Disconnect the power plug to avoid electrical shock when replacing parts. In some cases, alternating current is also
impressed in the chassis, so electrical shock is possible if the chassis is contacted with the power on.
6. Always use the replacement parts specified for the particular model when making repairs. The parts used in products
require special safety characteristics such as inflammability; voltage resistance, etc. therefore, use only replacement parts
Page 3
that have these same characteristics. Use only the specified parts when the mark is indicated in the circuit diagram or
2
parts list.
7. Part mounting and wire routing should be the same as that used originally. For safety purposes, insulating materials such as
isolation tubes or tape are sometimes used and printed circuit boards are sometimes mounted floating. Also make sure that
wiring is routed and clamped to avoid parts that generate heat or use high voltage. Always follow the manufactures wiring
routes / dressings.
8. Always ensure that all internal wirings are in accordance before re-assembling the external casing after a repair is
completed. Do not allow internal wiring to be pinched by cabinets, panels, etc. Any error in reassembly or wiring can result
in electrical leakage, flame, etc., and may be hazardous.
9. NEVER remodel the product in any way. Remodeling can result in improper operation, malfunction, electrical leakage, or
flame, which may be hazardous.
10. Always perform an AC leakage current check on the exposed metallic parts of the cabinet such as antennas, terminals,
screw heads, metal overlays, control shafts, etc. to be sure that the set is safe to operate without any danger of electrical
shock before returning the set to the customer.
11. To check leakage current: (After completing the work, measure the leakage current to prevent an electrical shock.)
• 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 ohms per volt or more sensitivity in the following manner.
Connect a 1500 ohm 10 watt resistor, paralleled by a 0.15 µF, AC type capacitor, between a known good earth ground (water pipe,
conduit, etc.) and the exposed metallic parts, one at a time. Measure the AC voltage across the combination of 1500 ohm resistor
and 0.15 µF capacitor. Reverse the AC plug at the AC outlet and repeat AC voltage measurements for each exposed metallic part .
Voltage measured must not exceed 0.3 volts rms. This corresponds to 0.2 milliamps AC. Any value exceeding this limit constitutes a
potential shock hazard and must be corrected immediately.
Product Safety Notice
Many electrical and mechanical parts in this chassis have special safety-related characteristics. These characteristics are often
overlooked in a visual inspection. The protection afforded by them cannot necessarily be obtained by using replacement
components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified
in this manual and its supplements. Electrical components having such features are identified by the international hazard symbols
on the schematic diagram and the parts list. Before replacing any of these components, read the parts list in this manual carefully.
The use of substitute replacement parts which do not have the same safety as specified in the parts list may create electrical shock,
fire, or other hazards.
Page 4
Entering Service Mode
3
1. Set VOLUME to minimum and press MUTE button twice on the remote
control.
↓
↓
Service Mode display
2. Press MUTE button again and hold button down.
3. While holding the MUTE button, press MENU button on TV set.
Selecting the Adjusting Item
Every pressing of CH
Adjusting the Data
Pressing of VOLUME
or button in the service mode changes the adjustment items.
or button will change the value of data in the range from 00H to FFH. The variable range depends on
the adjusting item.
Exiting Service Mode
Pressing POWER button to turn off the TV once.
Page 5
LED BLINK CODES
4
The yellow, blue, and red/green LED lights on the TV (at the bottom center of the TV) indicate the TV's status, as described below:
Note: If the TV loses A/C power (e.g., a power outage occurs or the power cord is unplugged), when power is restored, the yellow
LED will blink while the TV is booting until the remote control is usable. This is normal and is not a sign of malfunction.
50HM66/56HM66
MODE POWER LAMP TIMER ANNOUNCEMENT
POWER ON
POWER OFF (Standby w/ Quick
Restart OFF)
IN LPS (Standby w/ Quick
restart ON)
Waiting to re-light the lamp
Lamp won’t light
Open Lamp door
Fan Stop Detection (Light
Engine)
Fan Stop Detection (POD)
Fan Stop Detection (Ballast)
IIC BUS Error
Color wheel stop
Abnormal temperature in
Thermo Sensor
Seine Booting
SLEEP TIMER
BLUE YELLOW RED/GREEN VOICE
ON
ON Blinking
ON
ON
Blinking
ON Blinking
ON
YES
Blinking
Blinking
Blinking
YES
YES
YES
YES
Slow
blinking
YES
Fast
blinking
Blinking
YES
Fast
blinking Blinking Blinking
3 Blinks
ON
YES
Page 6
Replacing the Lamp Unit
5
WARNING: RISK OF ELECTRIC SHOCK! TO REDUCE THE RISK OF ELECTR IC SHOCK, NEVER REMOVE TV COVERS,
EXCEPT AS SPECIFIED HEREIN. REFER ALL SERVICING NOT SPECIFIED IN THIS MANUAL TO QUALIFIED SERVICE
PERSONNEL. Failure to follow this WARNING may result in death or serious injury.
The light source for this TV is a mercury lamp with internal atmospheric pressure that increases during use. The lamp has a limited
service life that varies depending on product use and user settings.
As is generally the case with all projection TVs that use projection lamps as a light source, the brightness of the lamp in this TV may
vary somewhat over the expected service life and will generally decrease over time. Because of the many variables that can affect
the useful service life of the lamp, your experience may vary from other users.
If you use the lamp beyond its service life you may notice a reduction in the colors and/or brightness of the picture. The strength of
the quartz glass in the lamp will be reduced and the lamp may rupture (often making a loud noise when this happens). If the lamp
ruptures, the TV will not operate until the lamp unit is replaced.
CAUTION: Always handle the lamp unit with care. The lamp unit in this TV was designed for safe replacement by consumers;
however, if the lamp unit is subjected to intentional abuse (such as excessive mechanical abuse or handling by children or pets), the
unit may break, exposing sharp edges or pinch points.
WARNING: RISK OF ELECTRIC SHOCK! TO REDUCE THE RISK OF ELECTRIC SHOCK, NEVER REMOVE TV COVERS,
EXCEPT AS SPECIFIED HEREIN. REFER ALL SERVICING NOT SPECIFIED IN THIS MANUAL TO QUALIFIED SERVICE
PERSONNEL. Failure to follow this WARNING may result in death or serious injury.
1. Turn off the TV and unplug the power cord.
WARNING: Eye damage may result from directly viewing the light produced by this lamp. Always turn off the TV and unplug
the power cord before opening the lamp unit door.
CAUTION! HOT SURFACE! Touching the lamp before it has cooled will result in severe burns. ALLOW THE LAMP TO
COOL FOR AT LEAST ONE (1) HOUR BEFORE REPLACING IT.
2. Using a manual, slotted screwdriver, loosen the screw securing the lamp door and remove the door.
3. Using a manual Phillips screwdriver, loosen the two screws on the lamp unit.
Page 7
WARNING: RISK OF ELECTRIC SHOCK! The lamp unit door is provided with an interlock to reduce the risk of electric
6
shock and excessive ultraviolet radiation. Never defeat its purpose or attempt to service without removing the lamp
unit door completely. Failure to follow this WARNING may result in death or serious injury.
4. Grasp the lamp unit handle and gently pull the lamp unit straight out of the TV. Set the old lamp unit aside (-> "Disposing of
the used lamp unit" on Owners’ Manual). NOTE: Wear soft, lint-free gloves when replacing the lamp unit.
5. Carefully insert the new lamp unit straight into the TV until it is fully seated.
NOTE: Never subject the lamp unit to excessive shock. Never touch the lamp unit glass or otherwise get it dirty. Doing so may
affect the image quality and reduce the service life of the lamp. See "Cleaning the lamp unit glass" below.
CLEANING THE LAMP UNIT GLASS
If you accidentally touch the lamp unit glass or otherwise get it dirty, wipe it with a lint-free lens cleaning cloth (such as a cloth for
cleaning camera lenses or eyeglasses).
CAUTION: NEVER clean a hot lamp with any type of flammable liquid or aerosol cleaning agent. Many ordinary cleaning
agents (such as glass cleaners) contain chemicals that may be flammable at certain temperatures. If the lamp unit is not allowed to
cool for at least one (1) hour, such chemicals may ignite.
6. Using a manual Phillips screwdriver, tighten the two lamp unit screws. NOTE: Hand-tighten only. Do not use an electric
screwdriver. Make sure the lamp unit and screws are installed securely. Otherwise, the TV may no turn on and the
lamp life may be shortened.
Page 8
7. Reattach the lamp unit door, making sure to insert the hooks on the left side of the door inside the opening in the TV cabinet.
7
8. Replace the door screw and tighten using a manual screwdriver. NOTE: Make sure the lamp unit door is installed
securely; otherwise, the TV may not turn on.
9. Plug in the power cord and turn on the TV. After the initial warm-up period (which may take several seconds for full picture
brightness), the TV should operate normally. If any of the following conditions exist, turn off the TV, unplug the power cord,
and repeat steps 1-9 to ensure that the lamp unit and lamp unit door are installed correctly:
• No picture
• Dark picture
• TV will not turn on
NOTE: If, after repeating steps 1-9, the problem still exists:
• In the U.S., call TACP Consumer Solutions at 1-800-631-3811.
• In Canada, locate the nearest Toshiba authorized service depot by directing your web browser to www.toshiba.ca;
click "Home Entertainment", and then click "Support".
Disposing of the Used Lamp Unit
CAUTION: Always handle the lamp unit with care. The lamp unit in this TV was designed for safe replacement by consumers;
however, if the lamp unit is subjected to intentional or accidental abuse (such as excessive mechanical abuse or handling by
children or pets), the unit may break, exposing sharp edges or pinch points.
• Place the used lamp unit in the empty box from the new unit.
• Keep the lamp unit out of reach of children and pets.
• Dispose of the used lamp unit by the approved method for your area.
NOTE: The lamp unit contains mercury. Disposal of mercury may be regulated due to environmental considerations. For disposal
or recycling information, contact your local authorities or the Electronic Industries Alliance (www.eiae.org).
2007 Toshiba America Consumer Products, LLC. Page 9 of 12
SMART2006001_Version2.2
Page 26
Page 27
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27
Page 29
Location Part No. Description
A
Y
A
Y
A
Y
A
A
A
Y
A
A
A
C825
76829563
PLASTIC FILM, 400V 0.056UF J
A
A
A
A
A
A
A
A
A
28
10075002252 CABINET/RACK BASE ASSEMBL
11075002253 CABINET/RACK CENTER DIVIDER ASS
20175002255 CABINET/RACK BEZEL ASS
20575002254 CABINET/RACK BACK COVER PROP
23575002051 SPK GRILLE COVER
33375002050 PIECE AV MOUNT ASS
33875002052 PIECE AV BUTTONS.
62123717443 SCREW, SCREW , AV BOARD ECO
81175002133 PAD CENTER PARTITION
B81023165495 TERMINAL, EARTH PHI3, MET31-0332
B89623165495 TERMINAL, EARTH PHI3, MET31-0332
B89823165495 TERMINAL, EARTH PHI3, MET31-0332
B89923165495 TERMINAL, EARTH PHI3, MET31-0332
C80176503508 MT PLA PCX2 337 11474
C80276503507 PLASTIC FILM, AC275V 0.22UF K
C80376503506 PLASTIC FILM, AC275V 0.1UF K
C80776092565 CERAMIC DISC, AC250V B 470PF K
C80876092565 CERAMIC DISC, AC250V B 470PF K
C81376092281 CERAMIC DISC, AC250V E 4700PF
C81476092281 CERAMIC DISC, AC250V E 4700PF
C81576092565 CERAMIC DISC, AC250V B 470PF K
C82076073217 ELECTROLYTIC, 200V 560UF M
C82176092343 CERAMIC DISC, 2KV 680PF K
C82276092344 CERAMIC DISC, 2KV 820PF K
C82376092339 CERAMIC DISC, 2KV 330PF K
C82476109472 CERAMIC CHIP, 50V B 4700PF K
C82676092337 CERAMIC DISC, 2KV 220PF K
C82776214102 CERAMIC DISC, 500V B 1000PF K
C82876092179 CERAMIC CHIP, 25V B 0.22UF K
C82976092463 CERAMIC CHIP, 16V B 0.22UF K
C83076285104 CERAMIC CHIP, 50V B 0.1UF K
C83176285104 CERAMIC CHIP, 50V B 0.1UF K
C83276678229 ELECTROLYTIC, 200V 2.2UF M
C83376503053 PLASTIC FILM, 63V 1UF J
C83476214103 CERAMIC DISC, 500V B 0.01UF K
C83576073089 ELECTROLYTIC, 50V 47UF M 3
C84076679220 ELECTROLYTIC, 250V 22UF M 3
C84176073097 ELECTROLYTIC, 10V 2200UF M 3
C84276503041 PLASTIC FILM , 63V 0.1UF J
C84376092333 CERAMIC DISC, 2KV 100PF K
C84576669229 ELECTROLYTIC, 50V 2.2UF M
C84876073039 ELECTROLYTIC, 16V 220UF M 3
C85076073217 ELECTROLYTIC, 200V 560UF M
C85176073217 ELECTROLYTIC, 200V 560UF M
C85276092281 CERAMIC DISC, AC250V E 4700PF
C85376073082 ELECTROLYTIC, 50V 2.2UF M 3
C85476503053 PLASTIC FILM, 63V 1UF J
C85576092730 CERAMIC CHIP, 16V B 0.1UF K
C85676820103 PLASTIC FILM, 630V 0.01UF J
C85776092730 CERAMIC CHIP, 16V B 0.1UF K
C85876092730 CERAMIC CHIP, 16V B 0.1UF K
C86576073038 ELECTROLYTIC, 16V 100UF M 3
C87076092178 CERAMIC CHIP, 25V B 0.1UF K
C87176073197 ELECTROLYTIC CE04P 50V 56UF M 3
C87276092178 CERAMIC CHIP, 25V B 0.1UF K
C87376073171 ELECTROLYTIC, 25V 820UF M 3
C87476073171 ELECTROLYTIC, 25V 820UF M 3
Page 30
Location Part No. Description
A
A
A
A
A
A
A
A
A
A
D840
23362046
DIODE, LN1WBA60 4101
A
A
29
C87576073155 ELECTROLYTIC, 16V 1000UF M 3
C87676073155 ELECTROLYTIC, 16V 1000UF M 3
C87776073205 ELECTROLYTIC CE04P 50V 470UF M 3
C87876073035 ELECTROLYTIC, 16V 22UF M 3
C87976073084 ELECTROLYTIC, 50V 4.7UF M
C88176109103 CERAMIC CHIP, 50V B 0.01UF K
C88376109103 CERAMIC CHIP, 50V B 0.01UF K
C88476092178 CERAMIC CHIP, 25V B 0.1UF K
C88576092178 CERAMIC CHIP, 25V B 0.1UF K
C88676092178 CERAMIC CHIP, 25V B 0.1UF K
C88776109103 CERAMIC CHIP, 50V B 0.01UF K
C88876073087 ELECTROLYTIC, 50V 22UF M 3
C88976073087 ELECTROLYTIC, 50V 22UF M 3
C89176073152 ELECTROLYTIC, 16V 330UF M 3
C89276073038 ELECTROLYTIC, 16V 100UF M 3
C89876092178 CERAMIC CHIP, 25V B 0.1UF K
C89976092567 CERAMIC DISC, AC250V E 1000PF M
D80123362200 DIODE, D5SB60, 7009F07
D801B23717240 SCREW
D80523357850 DIODE, ZENER, MTZJ9.1
D80623357893 DIODE, ZENER, MTZJ27C
D80923357905 DIODE, ZENER, MTZJ36C
D81023357893 DIODE, ZENER, MTZJ27C
D81123357511 DIODE, AG01
D81223357852 DIODE, ZENER, MTZJ9.1C
D81323357512 DIODE, AL01Z
75002005 PC BOARD ASSY, PE0032B1 POWER
U01B75002006 PC BOARD ASSY, PE0032B2 BALLAST POWER
U01C75002007 PC BOARD ASSY, PE0032B3 REMOTE EYE
U01D75002008 PC BOARD ASSY, PE0032B4 SIDE AV INPUT
U01E75002009 PC BOARD ASSY, PE0032B5 KEY SWITCH(720P 06MODEL)
U01F75002010 PC BOARD ASSY, PE0032B6 DOOR SWITCH
U01G75002011 PC BOARD ASSY, PE0032B7 LED(720P 06MODEL)
U02
75002014 PC BOARD ASSY, PE0033A1 REGULATOR
U02B75002015 PC BOARD ASSY, PE0033A2 TV-MICRO
U0375002016 PC BOARD ASSY, PE0034A1 BACK AV
U0475004946 PC BOARD ASSY, PE0043A1 HM66 SEINE
U05
75002876 PC BOARD ASSY, PE0044A1 D-TUNER DLP/FPD
V70175007110 LAMP UNIT, SERVICE, Y66-LM
W08075002043 CABLE FFC 24PIN 1.0MM 130MM
W80123372117 POWER CORD, U/C 125V10A HSV 5 CMC-02P 5
WV0175004853 CABLE, LVDS
Y10175002058 MANUAL OM INSTALLATION E/F
Y10275002057 MANUAL OPERATING ENGLISH/FRENC
Y91275002040 REMOCON HAND UNIT, CT-90251
Y91323306614 REMOCON IR, BLASTER GLINK 57H93
Page 34
TOSHIBA CORPORATION
1-1, SHIBAURA 1-CHOME, MINATO-KU, TOKYO 105-8001, JAPAN
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