Digital Projection LIGHTNING 10sx And LIGHTNING 15sx User Manual

							Fault Finding and Maintenance
MAINTENANCE
LBV00056; Revision A - 23/08/99 
						

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Fault Finding and Maintenance
Troubleshooting
MAINTENANCE
LBV00056; Revision A - 23/08/99
SOLUTION
Check mains plug and
projector switch.
Check if air ducts are
clear, clean/replace filters.
Check if air ducts are
clear, clean/replace filters.
Replace the lamp.
Press Lamp High or Lamp
Low on Remote Control.
Switch off the projector
and power-up again.
Connect an input source.
Refer to Signal Sources
for correct connections.
Press the PIC MUTE
button on the remote
control to turn it off.
Select a channel. PROBLEM
The projector will not
power-up.
The projector shuts down.
Lamp power declines.
Front Red LED
illuminated.
No Image is displayed.POSSIBLE CAUSE
The projector is not
plugged in correctly.
Thermal shut down
devices have cut power
due to overheating.
The projector is
overheating.
The lamp has reached the
end if its life.
The lamp is switched off.
Lamp has not lit (the red
LED will be illuminated).
No input source.
Input source incorrectly
connected.
PIC MUTE is on.
Channel has not been
selected. 
						

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Fault Finding and Maintenance
MAINTENANCE
LBV00056; Revision A - 23/08/99
PROBLEM
The lamp is lit but no
image is being displayed.
No image is displayed and
a LED is flashing on the
input board.
Image does not fit onto
screen.
Uneven focusing.
Poor vertical resolution.
Picture flicker.POSSIBLE CAUSE
DMDs™ have been shut
down due to overheating.
Input device is connected
to wrong input.
No input source.
The wrong aspect ratio has
been set.
Projector is in the wrong
position.
Projector not positioned
correctly.
Faulty interlacing.
Incorrect sync selected.
The lamp may be reaching
the end of its life.SOLUTION
Check if air ducts are
clear, clean/replace filters.
Connect input to the row
with flashing LED.
Change the input number
of selected device in the
Channel Set-up.
Connect input source.
Change the aspect ratio in
CHANNEL SET-UP.
Check the throw
distance is correct.
Re-position the projector
to be perpendicular to the
screen and re-focus.
Contact your dealer.
Set sync to match the
input devices sync.
Replace Lamp. 
						

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Fault Finding and Maintenance
MAINTENANCE
LBV00056; Revision A - 23/08/99
PROBLEM
An interrupted image is
being displayed.
Distorted image from a
computer input.
No menus are displayed
when pressing MENU on
the remote control.
Uneven light distribution.
A warning box tells you
the projector is too hot.
The projector is not
responding to commands
from the remote control.
The back light on the
remote control will not
illuminate.POSSIBLE CAUSE
The image has been pre-
recorded with a different
sync.
The computers pixel phase
and resolution differ from
that of the projector.
The On Screen Display is
turned off.
Screen may be wrinkled or
incorrectly installed.
The projector is
overheating.
The batteries are flat.
The remote cable is not
connected properly.
The batteries are flat.
The remote cable is not
connected properly.SOLUTION
Change the input sync
using MODIFY in the
CHANNEL SET-UP
to match the signal to the
projector.
Use the PIXEL and
PHASE buttons on the
remote control to match
them with the projector.
Press the OSD ON button
on the remote control.
Ensure screen is flat and
securely mounted.
Check if air ducts are
clear, clean/replace filters.
Replace batteries.
Ensure the cable is 
connected properly.
Replace batteries.
Ensure the cable is 
connected properly. 
						

							Lamp Replacement
To remove the existing lamp follow the procedure below:-
1. Turn off the existing lamp using the LAMP OFF button on the remote control 
unit and to allow the cooling fan to run for 5 minutes.
2. Disconnect the projector from the mains supply and wait 20 minutes for the 
projector to cool down.
3. Undo the six, quarter turn, quick release screws on the right hand side cover 
and remove cover.
4. Unscrew the three retaining screws securing the lamp in position (see diagram 
below).
5. Using the handle provided on the lamp housing slide out the lamp and remove 
to a safe location.
Rear View of Lamp Side View of Lamp
Retaining Screws
PTFE
SilderPTFE
Silder
Retaining Screws
HandlePTFE
Silder
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Fault Finding and Maintenance
Maintenance
MAINTENANCE
LBV00056; Revision A - 23/08/99 
						

							To fit a new lamp:-
1. Lift the lamp into position on the right hand side of the projector and align the 
PTFE sliders on each side of the lamp between the two sliders on each side of 
the lamp bay in the projector.
2. Push the lamp back into the projector and secure in position by tightening the 
three retaining screws. 
3. Replace the side cover and test for operation.
Lamp Life Timer
The lamp incorporates a passive mercury lamp life timer. This timer has an
unmarked scalar bar which indicates 0 to 1000 hours of lamp use with graduation
marks every 50 hours. The current lamp usage is indicated by a black mark on the
the mercury bar (shown in diagram at 750 hours).
1000
HOURS500
HOURS0
HOURS
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Fault Finding and Maintenance
MAINTENANCE
LBV00056; Revision A - 23/08/99 
						

							Conserving Lamp Life
As with all Xenon arc lamps, the Digital Projection lamp requires a very high strike
voltage (>30kV) to initiate the arc. This high voltage strike causes minute amounts
of material to be lost from the electrode tips. It has been identified that lamp with a
higher number of strikes can fail earlier.
To conserve lamp life, it is recommended that the user reduces the amount of strikes
as much as possible. For example, if the projector is not required for an hour during
a presentation it would be beneficial to keep the lamp running (in Picture Mute if
necessary) rather than turning the lamp off and then back on again.
Recent increases in the projector light output mean that the image may be brighter
than required for a given application. In such instances, using the projector on
‘Lamp Low’ can still give an acceptable performance with the added benefit of
increasing the life of your lamp.
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Fault Finding and Maintenance
MAINTENANCE
LBV00056; Revision A - 23/08/99 
						

							Stuck Lenses
Due to the introduction of physically larger lenses, over-tightening the lens, rotating
the lens too quickly in the lens mount or the presence of dirt in the threads of the
lens or mount may cause the lens to become stuck in the lens mount.
In order to prevent incidents of this nature, a fibre washer is now fitted to all new
lenses before shipping. Users with lenses shipped prior to the introduction of this
washer are advised to request them when placing their next order. Digital Projection
also recommends the following installation procedure for all lenses.
1. Check the fibre washer is in place and the lens is in good condition.
2. Check the lens and lens mount screw threads are free from dirt and metal 
shavings.
3. Ensure the motorised lens mount is in the disengaged position.
If fitting a POWERgvlens, ensure the lens adapter is fitted.
4. Fully support the weight of the lens while offering it up to the lens mount.
5. Carefully guide the rear of the lens into the guide ring at the rear of the mount.
6. Continuing to support the weight of the lens (especially at the front) apply a 
slight rearward pressure and rotate counter-clockwise until a click is heard.
7. Slowly rotate the lens clockwise until it seats against the lens mount (do not 
over-tighten).
8. Turn the lens mount lever clockwise to engage. 
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Fault Finding and Maintenance
MAINTENANCE
LBV00056; Revision A - 23/08/99
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							Cleaning Optical Components
Airborne contaminants can deposit on exposed optical faces within the projector.
These deposits, by diffusing the light beams inside the projector, can adversely
affect light output and contrast ratio.
High levels of dust are created during construction or woodworking, both regular
activities during exhibition booth or set erection. Digital Projection recommends
that whenever possible, projectors mounted in the vicinity are turned off during
such activities.
Another cause of contamination is theatrical smoke/fog machines. Chemicals and
oils used by these machines condense onto the optical surfaces within the projector
and form a sticky surface to which particles adhere. Digital Projection recommend
that only non-chemical and non-oil smoke machines are used with LIGHTNING
displaysand that projectors are not mounted in the vicinity of the smoke machine or
where smoke will enter the projector.
All accessible optical surfaces within the projector are covered in multi-layer anti-
reflective coatings that act as filters or reduce reflections. Hard deposits such as grit
or dust if dragged across these surfaces (by wiping with a tissue or cloth) can cause
damage to the coatings and reduce their effectiveness. However, if care is taken it is
possible to clean a number of optical surfaces within the projector. The following
optical components can be easily reached for cleaning.
1. Cold Mirror - directly in front of the lamp
2. UV Filter - forward of the cold mirror
3. Prism Output Face - immediately behind the projection lens
4. Projection Lens 
The following three tier cleaning procedure is recommended for these surfaces.
1. For settled particles such as dust use particle free, oil free, propellant free 
compressed air to blow away the particles. Propellant free aerosols allow use in 
any orientation without propellant being ejected with the gas..
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Fault Finding and Maintenance
MAINTENANCE
LBV00056; Revision A - 23/08/99 
						

							2. For stubborn particles and/or grease based marks, wet the surface with an 
analytical grade isopropyl alcohol (IPA or propan-2-ol) and remove by gently 
drawing a lint free optical tissue across the surface - do not rub. It may be 
necessary to repeat the procedure until no smears or streaks are visible on the 
surface.
In some instances it may not be possible to gain access to draw a tissue across 
the surface and a rubbing action may have to be employed. In such cases try to 
keep a cushion of tissue between your fingers and the surface to reduce the 
pressure on the coatings.
3. For further cleaning, or for finger marks, use a specialist micro-fibre optical 
cleaning cloth ensuring there are no settled particles beforehand.
It is possible that particles may adhere to inaccessible optical surfaces within the
projector. If this occurs in regions where the light has been split into its individual
colour components then shading and/or colouration of the displayed image may
occur. If you believe that your projector is affected in this way contact Digital
Projection.
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Fault Finding and Maintenance
MAINTENANCE
LBV00056; Revision A - 23/08/99