Hitachi Home-1 Projector Users Manual

31
Lamp
The projector uses a high-pressure mercury glass lamp. The lamp can break with aloud bang, or burn out,if jolted or scratched, handled while hot, or worn over time.
Note that each lamp has a different lifetime, and some may burst or burn out soon after
you start using them. In addition, when the bulb bursts, it is possible for shards of
glassto fly into the lamp housing, and for gas containing mercuryto escape from the
projector’s vent holes.
• If the lamp should break (it will make a loud bang...

32
1Turn off the projector, and unplug the power cord. Allow the lamp
bulb to cool for at least 45 minutes.
6Insert the new lamp, and tighten the 2
screws firmly to lock it in place.
Slide the lamp cover into place, and tighten the screw of the lamp
cover firmly.
Slowly turn the projector so that the top is facing up.
3After making sure that the projector
has cooled adequately, slowly flip
over the projector, so that the bottom
is facing up.
4Unscrew the screw of the lamp cover,
then slide and take the...

33
Air Filter
Caring For The Air Filter
The air filter should be cleaned about every 100 hours. If the indicators or a message
prompts you to clean the air filter (see the section “Related Messages” and “Regarding
The Indicator Lamps”), clean the air filter as soon as possible. If the air filter becomes
clogged by dust or the like, internal temperature rises and could cause malfunction.
1Turn off the projector, and unplug the power cord.
2Apply a vacuum cleaner to
the top of the filter cover to
clean the...

34
Replacing The Air Filter
Filter cover
Air filter Release buttons
Release buttons
Turn off the projector, and unplug the power cord.
2Contact your local dealer to prepare a
new air filter. Tell the dealer your air
filter type number.
4Hold the release buttons of the air
filter, while pulling down it. 
3After making sure that the projector
has cooled adequately, remove the
filter cover. Hold the release buttons of
the filter cover, while pulling up it.
6Reset the filter timer.
(1)  Turn on the...

35
Other Care
WARNING•Please carefully read the “User’s Manual - Safety Guide”.
• Before replacing the air filter, make sure the power switch is off and the power cable
is not plugged in.
ATTENTION
• Do not use cleaners or chemicals other than those listed below,
including benzene and paint thinner.
• Do not use aerosols or sprays.
• Do not polish or wipe with hard objects.
Caring For The Inside Of The Projector
Caring For The Lens
In order to ensure the safe use of your projector, please have it cleaned...

36
Troubleshooting
Related Messages
When the units power is ON, messages such as those shown below may be displayed.
When any such message is displayed on the screen, please respond as described
below. If the same message is displayed after the treatment, or if a message other than
the following appears, please contact your dealer or service company.
MessageDescription
CHANGE THE LAMP
AFTER REPLACING LAMP,
RESET THE LAMP TIMER.
(*1)Lamp usage time is approaching 2000 hours. (*2) 
Preparation of a new...

37
Wipe the dust-detecting window by
using a soft cloth.
Troubleshooting (continued)
Related Messages
(continued)
MessageDescription
CLEAN THE AIR FILTER
POWER OFF FIRST,
THEN CLEAN THE AIR FILTER.
AFTER CLEANING THE AIR
FILTER,
RESET THE FILTER TIMER.A note of precaution when cleaning the air filter. 
Please immediately turn the power OFF, and clean or change
the air filter by referring to the “Air Filter” section of this manual.
After you have cleaned or changed the air filter, please be sure
to reset...

38
ATTENTION• When the interior portion has become overheated, or when the lamp
cover has not been properly fixed (attached), for safety purposes, the power source
may be automatically turned off, and the indicator lamps may also be turned off. In
such a case, press the “Ó” (OFF) side of the power switch, and wait at least 45
minutes. After the unit has sufficiently cooled down, please make confirmation of the
attachment state of the lamp and lamp cover, and then turn the power on again.
Regarding The...

39
POWER
indicatorLAMP
indicatorTEMP
indicatorDescription
Lighting or
blinking in
redTurned offBlinking in
red
The cooling fan is not operating. Turn the power OFF and wait
at least 20 minutes. After the unit has sufficiently cooled down,
please make confirmation of the following item, and then
resent the power to ON.
• Is there no foreign matter caught in the cooling fan?
Lighting or
blinking in
red
Turned offLighting in
red
There is a possibility that the interior portion has become
heated. Turn the...

40
WARNING• Please carefully read the “User’s Manual - Safety Guide”.
Never use the projector if abnormal operations such as smoke, strange odor, excessive
sound, damaged casing or elements or cables, penetration of liquids or foreign matter,
etc. should occur.
Phenomena That May Easily Be Mistaken For Machine Defects
• Although bright spots or dark spots may appear on the screen, this is a
unique characteristic of liquid crystal displays, and such do not constitute or imply a
machine defect.NOTE
Before...