Infocus 930, 920, 900 Service Manual
900 Series Service Guide
010-0319-00
SAFETY PRECAUTION
WARNING: Service should not be attempted by anyone unfamiliar with the necessary precautions on this
projector. 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 projector and the AC Iine
before any service is performed on the projector.
2. When replacing a chassis in the cabinet, always be certain that all the protective devices are put back in
place, such as; non-metallic control knobs, insulating covers, shields, isolation resistor-capacitor network
etc.
3. Before returning the set to the customer, always perform an AC Ieakage current check on the exposed
metallic parts of the cabinet, such as terminals, screwheads, metal overlays, control shafts etc. to be sure
the set is safe to operate without danger of electrical shock. Plug the AC Iine cord directly into a AC outlet
(do not use a line isolation transformer during this check). Use an AC voltmeter having 5000ohm per volt or
more sensitivity in the following manner: Connect a1500ohm 10W 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 combina-
tion of 1500ohm resistor and 0.15 µF capacitor. Reverse
the AC plug at the AC outlet and repeat AC voltage mea-
surements for each exposed metallic part. Voltage mea-
sured must not exceed 5.25V(rms). This corresponds
to 3.5 mA(AC). Any value exceeding this limit consti-
tutes 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 charac-
teristics are often passed unnoticed by a visual inspection and the protection afforded by them cannot neces-
sarily 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 characteristics as specified in the parts list may create
shock, fire or other hazards.
ULTRAVIOLET DANGER IN SERVICE MODE
Eye damage may result from directly viewing the light produced by the lamp used in this product. Always turn
off lamp before opening this cover. Ultraviolet radiation eye protection required during servicing.
Table of Contents
Table of Contents.......................................................................................................... 3
Safety Precautions........................................................................................................ 4
Important Precautions .................................................................................................. 4
Important Safety Instructions ...................................................................................... 5
Parts Replacement ........................................................................................................ 7
Adjusting the optional ultra wide angle lens................................................................. 7
Bottom case............................................................................................................... 10
ECA stack.................................................................................................................. 13
Elevator assembly ..................................................................................................... 16
Exhaust fan assembly................................................................................................ 18
Filter tray.................................................................................................................... 21
Focus and zoom rings ............................................................................................... 22
Front bezel................................................................................................................. 24
IR assembly and IR window ...................................................................................... 26
Keypad assembly ...................................................................................................... 28
Lamp module............................................................................................................. 29
Projection lens ........................................................................................................... 31
Optical engine............................................................................................................ 34
Power supply ............................................................................................................. 38
Rear bezel ................................................................................................................. 43
Speakers ................................................................................................................... 45
Top case.................................................................................................................... 47
Software ....................................................................................................................... 49
Download the software .............................................................................................. 49
Install the software on the computer .......................................................................... 50
Upgrade the software through the CableWizard 2..................................................... 51
Functional Tests.......................................................................................................... 58
Troubleshooting.......................................................................................................... 62
Parts Lists.................................................................................................................... 76
FRUs by alphabetic listing ......................................................................................... 76
FRUs by numeric listing............................................................................................. 80
Parts list - Fasteners.................................................................................................. 84
Standard Accessories................................................................................................ 85
LP900 Series Service Manual 3
SAFETY PRECAUTIONS
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS
CAUTION: Laser beam is emitted when the laser button of the remote c ontrol is pr essed. Do not
APPLIANCE TO R AIN OR MOISTURE. DANGERO US HIGH VOLTAGES AR E
PRESENT INSIDETHE ENCLOSURE. DO NOT OPEN THE CABINET. REFER
SERVICING TO QUALIRED PERSONNEL ONLY.
look from the front of the remote control. D o not f ace toward a pers on or to a mirror.
The lightning flash with arrowhead
symbol, within an equilateral triangle,
is intended to alert the user to the
presenc e of uninsulated "danger ous
voltage" within the product's
enclosure that may be of sufficient
magnitude to c onstitute 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 (s ervicing) instructions
in the literature accompanying the
appliance.
FCC Radio Frequency Interferenc e Statement
Note: This equipment has been tested and found to comply with t he limits f or a Class A
WARNING : Changes or modific ations made to this equipment, not expressly approved by
Notice: This Class A digital apparatus complies with Canadian ICES-003.
IMPORTANT PRECAUTIONS
Save Original Packing Materials
The original shipping carton and packing materials will come in
handy if you ever have to ship your LCD projector. For maximum
protection, repack the set as it was originally packed at the factory.
digital device, pursuant to part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference when the equipment is
operated in a commercial environment. This equipment generates, uses, and can
radiates radio frequency energy and, if not installed and used in accordance with the
instruction manual, may c ause harmful interferenc e to r adio communications.
Operation of this equipment in a residential area is likely to cause harmful
interference in which case the user will be required to c orrect the interference at his
own expens e.
Toshiba, or parties authorized by Toshiba, could void the user's authority to operate
the equipment.
Cet appareil numérique de la classe A est conforme à la norme NMB-003 du
Canada.
In the spaces provided below, record the Model and Serial No. Iocated
at the rear of your LCD projector.
Mode No. Serial No.
Retain this information for future reference.
Avoid Volatile Liquid
Do not us e volatile liquids, such as an insect spray, near the unit.
Do not leave rubber or plastic products touching the unit f or a long
time. They will mar the finish.
Moisture Condensation
Never operate this unit immediately after moving it from a cold
location to a warm location. W hen the unit is exposed to such a
change in temperature, moisture may condense on the crucial
internal parts. To prevent the unit from possible damage, do not use
the unit for at least 2 hours when there is an extreme or sudden
change in temperature.
TDP-T1 / TDP-S2 Service Manual
IMPORTANT SAFETY INSTRUCTIONS
CAUTION: PLEASE READ AND OBSERVE
ALLWARNINGS 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 inc orporated in this unit will protect
you if you observe the following procedures for
installation, us e 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 oper ated only from
the type of pow er source indicated on the
marking label. If you are not s ure 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. Source of Light
Do not look int o the lens while the lamp
is on. The strong light fr om the lamp may
cause damage to your eyes or sight.
4. Ventilation
Openings in the cabinet are provided f or
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 a built-in installation s uch
as a bookcase or rack unless proper
ventilation is provided or the
manufacturer's instructions have been
adhered to.
IMPORTANT SAFETY INSTRUCTIONS
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.
6. Water and Moisture
Do not use this product near water - for
example, near a bath tub, wash bowl,
kitchen sink, or laundry t ub; in a wet
basement ; or near a swimming pool and
the like .
7. Cleaning
Unplug this pr oduct from the wall outlet
before cleaning. Do not use liquid cleaners
or aerosol cleaners. Use a damp cloth for
cleaning.
8. Power-Cord Protection
Power-supply c ords should be routed so
that they ar e not likely to be walked on or
pinched by items placed upon or against
them, paying particular attention to cords
at plugs, convenienc e 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 a risk of
fire or electric shock.
10. Lightning
For added pr otection 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.
TDP-T1 / TD
IMPORTANT SAFETY INSTRUCTIONS
11. Object and Liquid Entry
Never push objects of any kind into this
product thr ough 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. Do not place the product vertically
Do not use the pr oduct in the upright
position to project the pictures at the
ceiling, or any other vertic al positions.
It may fall down and dangerous.
13. Stack Inhibited
Do not stack other equipment on this
product or do not place this product on the
other equipment.
Top and bottom plates of this product
develops heat and may give some
undesirable damage to other unit.
14. Attachments
Do not use attachments not recommended
by the product manuf acturer as they may
cause hazards.
15. Accessories
Do not place this product on an unstable
cart, stand, tripod, bracket, or table. The
product may fall, causing serious injury to a
child or adult, and serious damage to the
product. Use only with a c art, st and, 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
a mounting accessory recommended by the
manufacturer.
A product and cart c ombination should be
moved with care. Quick stops, excessive
force, and uneven surfaces may caus e the
product and cart combination to overturn.
IMPORTANT SAFETY INSTRUCTIONS
16. Damage Requiring Service
Unplug this product from the wall outlet and
refer servicing to qualified servic e
personnel under the following c onditions:
a) When the power-supply c ord 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 requir e extensive
work by a qualif ied 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 a distinct change
in performance - this indic ates a need for
service.
17. Servicing
Do not at tempt to service this product
yourself as opening or removing covers
may expose you to dangerous voltage or
other hazards. Refer all servicing to
qualified service personnel.
18. Replacement Parts
When replacement parts are required, be
sure the servic e technician has us ed
replacement parts specified by the
manufacturer or have the same
characteristics as the original part.
Unauthorized s ubstitutions may result in
fire, electric shock, or other hazards.
(Replacement of the lamp only should be
made by users.)
19. Safety Check
Upon completion of any service or repairs
to this product, ask the s ervice technician to
perform safety checks to determine that the
product is in proper operating c ondition.
IIIIII
Parts Replacement
Adjusting the optional ultra wide angle lens
You adjust the image cast through the ultra-wide angle lens to match a specific rear projection screen
size. The ultra-wide angle lens is not compatible with the LP925.
To make this adjustment, the projector must be mounted in the rear projection mechanism. The projector
should be plugged into a power source. All other adjustments, including image size and basic focus must
be made before adjusting the lens.
NOTE For clarity some pictures show the top case removed. You can reach all the screws with the top
case in place. The projector will not operate with the top case removed.
1 Remove the front bezel (see page 24).
2 Turn the keystone adjustment knob clockwise until the lens tilts all the way down.
LP900 Series Service Manual 7
3 Use the 3mm ball head hex wrench (included with the lens) to loosen the two focus ring mounting
screws. Do not remove the screws. They only need to be loose enough to adjust the focus ring.
4 Use the 3mm ball head hex wrench to loosen the two plane correction ring mounting screws. Do
not remove the screws. They only need to be loose enough to adjust the ring.
5 Power up the projector.
LP900 Series Service Manual 8
6 Rotate the focus ring and the resolving plane correction ring to adjust the image.
The image should be sharp across the entire screen.
7 Tighten the four screws.
LP900 Series Service Manual 9
Removing and replacing the bottom case
The bottom case (LP920: 505-0675-xx; LP925, LP930: 505-0854-xx) encloses the bottom half of the
projector. When you replace the bottom case, you must first remove all the FRUs in the old case, then
install them in the new bottom case. You also need to install a certification label (IOpen 920: 020-1011-xx;
LP920: 020-1000-xx; LP925: 020-1071-xx; LP930: 020-1068-xx) on the new bottom case.
1 Remove the following items:
Front bezel (see page 24)
Rear bezel (see page 43)
Top case (see page 47)
Exhaust fan assembly (see page 18)
Speakers (see page 45)
ECA stack (see page 13)
Optical engine (see page 34)
Power supply (see page 38)
Elevator assembly (see page 16)
2 Use a tweezers or small flat bladed screwdriver to remove the two case retainer slides (340-
0660-xx) from each side of the bottom case. Insert the tweezers or screwdriver blade between
the slide and the bottom case. Gently pry the center portion of the slide away from the bottom
case while pulling the slide toward the front of the projector. Save the case retainer slides. You'll
need them for the new bottom case.
LP900 Series Service Manual 10
3 Remove the front bezel bracket from the bottom case. To do this, use a T-10 Torx driver to
remove the M3x8 screws that fasten the bracket to the bottom case. Save the bracket. You'll
need to install it in the new bottom case.
4 Use a hair drier or heat gun to loosen the serial number label (shown below). Don't use too much
heat. Then carefully peel it off of the certification label. You will reuse the serial number label
when you install the new bottom case.
LP900 Series Service Manual 11
Assembly Notes
♦ Install the front bezel bracket (removed in step 3 above) in the new bottom case.
♦ Attach a new certification label to the recessed area on the outside of the bottom case. Then attach
the serial number label to the new certification label.
♦ In the illustration below, the certification is the larger label. The smaller serial number label is circled.
♦ To replace the case retainer slides (removed in step 2 above) in the bottom case, position each slide
with the handle toward the front of the projector. Make sure that the latch tabs face upward and that
the slots in the slide fit between the front pair of tabs in the bottom case. Then move the slide toward
the rear of the projector to lock the slide in place in the bottom case.
LP900 Series Service Manual 12
Removing and replacing the ECA stack
The ECA stack (LP920, IOpen 920: 526-0068-xx; LP925, LP930: 526-0068-xx) consists of the I/O ECA,
controller ECA, I/O shield and I/O bezel. The I/O shield and I/O bezel fasten to the ECA stack with two
screws. The I/O ECA attaches directly to the controller ECA with fasteners and a connector. The
controller ECA is positioned above the I/O ECA in a stack. The ECAs are not available separately.
The ECA stack attaches to the top sides of the power supply and optical engine.
1 Remove the following items:
Front bezel (see page 24)
Rear bezel (see page 43)l
Top case (see page 47)
Exhaust fan assembly (see page 18)
2 Unplug the cables from the following connectors on the controller ECA:
LP900 Series Service Manual 13
3 Use a T-10 Torx driver to remove the nine M3x8 Torx screws that attach the ECA stack to the
power supply and optical engine.
4 Carefully lift the ECA stack upward to disengage connectors on the bottom side of the controller
ECA from the optical engine and power supply.
The connectors locations are shown below.
5 Lift the ECA stack away from the projector.
LP900 Series Service Manual 14
Assembly Notes
♦ Make certain that the two connectors on the bottom side of the controller ECA align properly with the
connectors on the optical engine and power supply. Then press the controller down to engage the
connectors.
♦ Fasten the ECA stack to the optical engine and power supply with the M3x8 screws. Tighten the
screws to 4 in.-lbs. (.452 Nm)
♦ Make certain that all nine cables are reconnected to the controller ECA.
♦ After reassembling the projector, make certain that you upgrade the projector software (see page 52).
LP900 Series Service Manual 15
Removing and replacing the elevator assembly
The elevator assembly (505-0647-xx) is comprised of four pieces: a housing, the elevator shaft and two
springs, the elevator actuator, and the elevator button. The rubber foot (505-0649-xx) at the bottom of the
elevator shaft supports the front of the projector in desktop applications. The elevator button presses onto
the end of the spring-loaded actuator and extends through the front bezel. It is not necessary to remove
the elevator from the projector to replace the rubber foot.
The elevator fastens to the inside of the bottom case.
1 Fully extend the elevator to unload the spring tension from the elevator shaft.
2 Remove the bottom case (see page 10).
3 With the bottom case upside-down on the bench, use a #1 Phillips screwdriver driver to remove
the black M3x5 screw from the rubber foot at the end of the elevator shaft.
4 Use a T-10 Torx driver to remove the four M3x8 Torx screws from the elevator housing on the
inside of the bottom case.
5 Lift the elevator assembly out of the bottom case.
LP900 Series Service Manual 16
Assembly Notes
♦ Position the elevator so that the actuator faces the front of the projector before you insert the end of
the elevator shaft through the hole in the bottom case.
♦ Fasten the elevator to the bottom case with the M3x8 screws. Tighten the screws to 4 in.-lbs. (.452
Nm).
♦ Make sure to replace the elevator button at the end of the actuator before you reassemble the
projector.
♦ After you've replaced the elevator, replace the rubber foot. Then fully retract the elevator to prevent
damage to the elevator shaft.
LP900 Series Service Manual 17
Removing and replacing the exhaust fan assembly
The exhaust fan assembly (LP920, IOpen 920: 505-0679-00; LP925, LP930: 505-0679-01) consists of the
exhaust fan and exhaust fan bracket in which the faNmounts. The assembly is located at the rear of the
projector inside of the rear bezel. It is held in place between the bottom and top cases without fasteners.
The fan exhausts hot air generated by the lamp module.
1 Remove the following items:
Front bezel (see page 24)
Rear bezel (see page 43)
Top case (see page 47)
2 Use a T-10 Torx driver to remove the two M3x8 Torx screws from the option card baffle and lift it
away from the projector. Save the option card baffle. You'll need to replace it after you replace
the exhaust fan assembly.
3 Unplug the exhaust fan cable from the controller ECA at connector J500.
LP900 Series Service Manual 18
4 Lift the tab that holds the interlock switch in position on the exhaust fan bracket and slide the
interlock switch out of the recess on the bracket.
LP900 Series Service Manual 19
5 Lift the exhaust fan assembly from the bottom case.
Assembly Notes
♦ Position the exhaust fan assembly so that it rests in the guide slots in the bottom case.
♦ Slide the interlock switch into the recess in the exhaust fan bracket. The tab on the bracket snaps
over the switch to hold it in position.
♦ Connect the exhaust fan cable to the controller ECA at J500.
♦ Replace the option card baffle making sure that the tab at the rear of the baffle properly engages the
slot at the top center of the exhaust fan assembly.
LP900 Series Service Manual 20
Removing and replacing the filter tray
The filter tray (505-0819-xx) is located on the underside of the bottom case. The tray contains a fine mesh
filter that cleans the air as it is drawn into the projector by the fan on the bottom of the optical engine. The
tray fits into a cavity on the left side of the bottom case and fastens with two screws.
1 Loosen the two black M3x5 Phillips screws at the sides of the filter tray handle.
NOTE It is not necessary to remove the screws. They are held in place in the filter tray handle.
2 Grasp the filter tray handle and slide the filter tray out from the cavity in the bottom case.
Assembly Notes
♦ Before installing the filter tray, make sure the mesh screen is clear of dust and lint. If needed, spray
compressed air through the top of the filter to blow off the debris.
♦ The filter tray fits into the cavity in the bottom case only one way. Make sure the recess in the filter
tray handle faces downward as you insert the filter tray into the bottom case.
♦ Fasten the filter tray to the bottom case with the two screws. Tighten the screws to 4 in.-lbs. (.452
Nm)
LP900 Series Service Manual 21
Removing and replacing the focus and zoom rings
The focus ring (LP920, IOpen 920: 505-0751-xx; LP925, LP930: 505-0752-xx) fits around the front of the
projection lens. The zoom ring (LP920, IOpen 920: 505-0752-xx; LP925, LP930: 505-0786-xx) fits inside
the focus ring. The lens cap (340-0445-xx) fits over the focus ring.
Each ring secures to the lens with three M2x5 plastite Phillips screws. A foam ring fits over the zoom ring
to prevent light leakage around the lens.
1 Remove the following items:
Front bezel (see page 24)
Rear bezel (see page 43)
Top case (see page 47)
2 Slide the foam ring off of the back of the zoom ring. This gives you access to the screws that
fasten the ring to the lens barrel.
3 Remove the three Phillips screws that fasten the zoom ring to the lens barrel, then slide the zoom
ring rearward, away from the focus ring.
NOTE You can access only two of screws from the top side of lens. Remove the other screw
from bottom side of the lens.
LP900 Series Service Manual 22
4 Remove the three Phillips screws that fasten the focus ring to the lens barrel, then pull it off the
front of the lens.
NOTE You can access only two of screws from the top side of lens. Remove the other screw from
bottom side of the lens.
5 Once the focus ring is off the lens barrel, remove the zoom ring.
Assembly Notes
♦ Hand tighten the screws on both rings to 2 in-lbs (.226 Nm)
♦ Slide the zoom ring on the lens barrel first. Then slide the focus ring on and align the screw holes in
the focus ring with the holes in the lens barrel flange.
♦ After you fasten the focus ring to the lens barrel, rotate the ring counterclockwise as far as it will go.
♦ This allows you to slide the zoom ring up far enough to see the screw holes in the lens barrel. Note
the location of the holes, then slide the zoom ring forward, and attach the screws.
♦ Slide the foam ring back over the lip on the back of the zoom ring.
LP900 Series Service Manual 23
Removing and replacing the front bezel
The front bezel (LP920, IOpen 920: 505-0750-xx; LP925, LP930: 505-0852-xx) covers the front of the
projector. It fastens to the metal chassis inside the projector with three screws.
The front bezel vent (505-0680-xx) fastens to the outside of the front bezel with three snap fasteners. You
remove the front bezel vent to access the front bezel screws.
1 Gently pry the front bezel vent to unsnap it from the front bezel.
2 Use a T-10 Torx driver to remove the three M3x8 Torx screws that fasten the front bezel to the
projector.
LP900 Series Service Manual 24
3 Pull the front bezel forward to separate it from the projector.
Assembly Note
♦ Make sure that the front bezel fits over the lip on the front of the top and bottom cases. The elevator
button extends through the hole at the bottom center of the front bezel. Tighten the three M3x8
screws to 4 in.-lbs. (.452 Nm). Place the front bezel vent against the front bezel and press to engage
the three snap fasteners.
LP900 Series Service Manual 25
Removing and replacing the IR assembly and IR window
The IR assembly (540-1478-xx) fastens to the inside of the top case in the projector, beneath the IR
window (340-0657-xx). The IR cable, part of the IR assembly, connects the IR receiver with the controller
ECA.
1 Remove the following items:
Front bezel (see page 24)
Rear bezel (see page 43)
Top case (see page 47)
2 With the top case upside-down on the bench, remove the M3x8 Torx screw that secures the IR
assembly in the top case.
Note Avoid scratching the I/R receiver dome. Lay the top case on a soft surface.
3 Lift the IR assembly up and away from the top case.
LP900 Series Service Manual 26
Loading...