Hitachi Projector BZ-1 User Manual

101
Maintenance 
Maintenance
A lamp has finite product life. Using the lamp for long periods of time could cause 
the pictures darker or the color tone poor. Note that each lamp has a different 
lifetime, and some may burst or burn out soon after you start using them. 
Preparation of a new lamp and early replacement are recommended.  To prepare 
a new lamp, make contact with your dealer and tell the lamp type number .
Replacing the lamp
Type number : DT01251
1.Turn the projector off, and unplug the power...

102
Maintenance
Lamp warning
Replacing the lamp (continued)
 HIGH VOLTAGE  HIGH TEMPERATURE HIGH PRESSURE
►The projector uses a high-pressure mercury glass lamp. The lamp 
can break with a loud 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, if the bulb bursts, it is possible 
for shards of glass to fly into the lamp housing, and for gas containing...

103
Maintenance
The air filter unit of this projector consists of a filter cover, two kinds of filters, and 
a filter frame. The new double large filters system is expected to function longer. 
However, please check and clean it periodically to keep ventilation needed for 
normal operation of the projector.
When the indicators or a message prompts you to clean the air filter, comply with 
it as soon as possible. Replace the filters when they are damaged or too soiled. 
To prepare new filters, make...

104
Maintenance
Cleaning and replacing the air filter (continued)
9.Turn the projector on and reset the filter time using the FILTER TIME item in 
the EASY MENU.
►Before taking care of the air filter, make sure the power cable 
is not plugged in, then allow the projector to cool sufficiently. Taking care of the 
air filter in a high temperature state of the projector could cause an electric shock, 
a burn or malfunction to the projector.
►Use only the air filter of the specified type. Do not use the...

105
Maintenance
WARNING  ►Be careful of handling a battery, as a battery can cause explosion, 
cracking or leakage, which could result in a fire, an injury, and environment pollution.
•   Use only the specified and perfect battery. Do not use a battery with damage, 
such as a scratch, a dent, rust or leakage.
•   When replacing the battery, replace it with a new battery.
•  
When a battery leaked, wipe the leakage out well with a waste cloth. If the leakage 
adhered to your body, immediately rinse it...

106
Caring for the mirror and lens
If the projection mirror or lens is flawed, soiled or fogged, it could cause deterioration 
of display quality. Please take care of the mirror and lens, being cautious of handling. 
1.Turn the projector off and unplug the power cord 
from the power outlet. And cool the projector down 
by leaving it for a while as it is.
2.The lens door can be opened manually.
Please hold both side of the lens door and slowly 
open it until it is locked with clicking sound.
3.Use an air...

107
PEN sensor
Maintenance
Other care
In order to ensure the safe use of your projector, please have it cleaned and 
inspected by your dealer about once every year.
Inside of the projector
1.
1.Turn the projector off, and unplug the power cord. Allow the projector to cool 
sufficiently.
Turn the projector off, and unplug the power cord. Allow the projector to cool 
sufficiently. Make sure that the lens door is closed before cleaning.
2.
2.After making sure that the projector is cool adequately, lightly...

108
►Before caring, make sure the power cord is not plugged in, 
and then allow the projector to cool sufficiently. The care in a high temperature 
state of the projector could cause a burn and/or malfunction to the projector .
►Never try to care for the inside of the projector personally. Doing is so 
dangerous. 
►Avoid wetting the projector or inserting liquids in the projector. It could result in 
a fire, an electric shock, and/or malfunction to the projector. 
• Do not put anything containing water,...

109
Troubleshooting
Troubleshooting
If an abnormal operation should occur, stop using the projector immediately.
Otherwise if a problem occurs with the projector, the following checks and measures are 
recommended before requesting repair. 
If this does not resolve the problem, please contact your dealer or service company. They 
will tell you what warranty condition is applied.
►Never use the projector if abnormal operations such as smoke, 
strange odor, excessive sound, damaged casing or elements or...

110
MessageDescription
The internal temperature is rising. 
Please turn the power off, and allow the projector to cool 
down at least 20 minutes. After having confirmed the 
following items, please turn the power ON again.  
 • Is there blockage of the air passage aperture?  
 • Is the air filter dirty? 
 • Does the peripheral temperature exceed 35°C?
 • Is the projector used at an altitude of about 1600 m or 
higher? If the projector is used at an altitude of about 1600 m 
or higher, set FAN SPEED of...