InFocus X1 User manual

Service Guide for the
X1

X1 Service Guide 2
Table of Contents
Table of Contents..........................................................................................................2
Safety Precautions........................................................................................................3
Important Precautions..................................................................................................3
Important Safety Instructions ......................................................................................4
Parts Replacement........................................................................................................5
Removable Parts Hierarchy ..................................................................................................5
Remove and Replace the Ballast/Power Supply ECA ..........................................................6
Remove and Replace the Bottom EMI Shield.....................................................................10
Remove and Replace the Chassis......................................................................................12
Remove and Replace the Color Wheel Shield....................................................................17
Remove and Replace the Controller ECA...........................................................................19
Remove and Replace the Elevator .....................................................................................22
Remove and Replace the Optical Engine ...........................................................................24
Remove and Replace the Cooling Fans ............................................................................. 27
Remove and Replace the Focus and Zoom Rings .............................................................30
Remove and Replace the Front Bezel ................................................................................32
Remove and Replace the I/O ECA .....................................................................................35
Remove and Replace the Keypad ......................................................................................37
Remove and Replace Lamp Module...................................................................................42
Remove and Replace the Lamphouse................................................................................45
Remove and Replace the Leveling Foot .............................................................................48
Remove and Replace the Rear Bezel.................................................................................49
Remove and Replace the Rubber Feet...............................................................................51
Remove and Replace the Top Case ................................................................................... 52
Remove and Replace the Speaker .....................................................................................54
Functional Tests..........................................................................................................56
Required equipment............................................................................................................56
Before beginning .................................................................................................................57
Perform the following tests.................................................................................................. 57
Troubleshooting..........................................................................................................60
Power and Start-up Problems .............................................................................................61
Image Problems ..................................................................................................................67
Keypad Problems................................................................................................................71
Remote Problems ...............................................................................................................72
Audio Problems...................................................................................................................73
Block Diagram.....................................................................................................................74
Prepare for Power Up with Top Case Removed .................................................................80
Check Controller Voltages ..................................................................................................81
Check the Color Wheel and Reseat the Cable ................................................................... 84
Check the Thermal Switch ..................................................................................................86
Check fan operation ............................................................................................................87
Check Ballast/Power Supply Voltages and Signals ............................................................88
Check I/O ECA Voltages and Signals .................................................................................90
Parts Lists....................................................................................................................93
Parts Exploded View ...........................................................................................................93
FRUs by alphabetic listing...................................................................................................94

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.
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS
APPLIANCE TO RAIN OR MOISTURE. DANGEROUS HIGH VOLTAGES ARE
PRESENT INSIDETHE ENCLOSURE. DO NOT OPEN THE CABINET. REFER
SERVICING TO QUALIRED PERSONNEL ONLY.
CAUTION: Laser beam is emitted when the laser button of the remote control is pressed. Do not
look from the front of the remote control. Do not face toward a person or to a mirror.
FCC Radio Frequency Interference Statement
Note: This equipment has been tested and found to comply with the limits for a Class A
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 cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful
interference in which case the user will be required to correct the interference at his
own expense.
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.
Notice: This Class A digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe A est conforme à la norme NMB-003 du
Canada.
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.
Avoid Volatile Liquid
Do not use volatile liquids, such as an insect spray, near the unit.
Do not leave rubber or plastic products touching the unit for 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. When 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.
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.
SAFETY PRECAUTIONS
LP280/LP290 Service Manual 4


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 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
marking 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. Source of Light
Do not look into the lens while the lamp
is on. The strong light from the lamp may
cause damage to your eyes or sight.
4. Ventilation
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 a built-in installation such
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 tub; in a wet
basement; or near a swimming pool and
the like .
7. Cleaning
Unplug this product 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 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 a risk 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.

X1 Service Guide 5
Parts Replacement
Removable Parts Hierarchy
Start
Lamp door
Lamp module
Focus ring
Zoom ring
Rear bezel
Rubber foot
Leveling foot
Top case Elevator shaft
60mm fan
80mm fanLamphouse
Ballast/power
supply ECA
Controller ECA
I/O EMI shieldChassis
Elevator springElevator actuator
Bottom EMI shield
I/O ECA
Optical engine
Ballast/power
supply insulator
Bottom case
Keypad ECA Key set LED cover
Color wheel shield
Front bezel
Nameplate label
Certification label
Lens cap
Speaker Speaker grill
Retainer studs
Ground spring
I/O panel label
Inner grill

X1 Service Guide 6
Remove and Replace the Ballast/Power Supply ECA
The ballast/power supply ECA (520-0114-xx) fastens to the chassis. It converts 100-240 VAC supply
voltage to various low voltage DC levels required internally by the projector. The power supply directly
interfaces with the ballast to control lamp strike and operation. The ballast steps up voltage from the
power supply to ignite the lamp module. The ballast/power supply ECA also interfaces with the controller
ECA to provide DC power and exchange control signals.
Audio amplification and takes place on the ballast/power supply ECA.
Fuses on the ballast/power supply ECA protect against internal shorts or supply surges. The fuses are
not available as FRU parts as a blown fuse usually indicates circuit damage and the need for ECA
replacement.
DANGER Do not attempt to measure the output voltage from the ballast when the lamp strikes. High
voltage produced by the ballast to strike the lamp can ruin test instruments as well as cause
personal injury.
1. Remove the following items:
Lamp module (page 42)
Focus ring (page 30)
Zoom ring (page 30)
Front bezel (page 32)
Rear bezel (page 49)
Top case (page 52)
2. Detach the lamp cable connector from the side of the lamphouse. Squeeze the two tabs on the
side of the connector and slide it rearward through the retainer on the lamphouse.

X1 Service Guide 7
3. Unplug the power supply/controller ECA cable from the ballast/power supply ECA
4. Remove the M4x6 Phillips screw that fastens the ground terminal to the chassis.

X1 Service Guide 8
5. Remove the seven M3x12 Plastite Phillips screws that fasten the ballast/power supply ECA to the
chassis.
6. Squeeze the tabs on each of the two retainer studs that secure the ballast/power supply ECA to
the chassis. Then lift the ECA away from the chassis.

X1 Service Guide 9
Assembly Notes
Ensure that the two retainer studs on the chassis engage the slots in the ballast/power supply ECA.
Press down on the ECA to lock the retainers into the slots.
Tighten the seven M3x12 Plastite Phillips screws securely. Do not overtighten the screws.
Connect the ground terminal to the chassis. Tighten the M4x6 Phillips screw securely.
Connect the power supply/controller ECA cable to CN651 on the ballast/power supply ECA.
Insert the lamp cable connector into the slot on the side of the lamphouse. Ensure that the slot for the
connector lock faces outward.

X1 Service Guide 10
Remove and Replace the Bottom EMI Shield
The bottom EMI shield (330-0965-xx) lies in the bottom case. It provides ground continuity between the
optical engine and the chassis.
1. Remove the following items:
Lamp module (page 42)
Focus ring (page 30)
Zoom ring (page 30)
Front bezel (page 32)
Rear bezel (page 49)
Top case (page 52)
Ballast/power supply ECA (page 6)
Chassis (page 12)
Controller ECA (page 19)
Color wheel shield (page 17)
Optical engine (page 24)
2. Lift the bottom EMI shield away from the bottom case.