Hitachi Cpx4 Projector Users Manual

61
Maintenance
Lamp
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, contact your dealer and tell the lamp type number.
Type number : DT00781
Replacing the lamp
1. Turn the projector off, and unplug the power cord. 
Allow the...

62
Maintenance
Lamp (continued)
Lamp warning
 HIGH VOLTAGE HIGH TEMPERATURE HIGH PRESSURE
WARNING  ►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, when 
the bulb bursts, it is possible for shards of glass to fly into the lamp housing, and 
for gas containing...

63
Please check and clean the air filter periodically. When the indicators or a 
message prompts you to clean the air filter, comply with it as soon as possible. 
Replace the air filter when it is damaged or too soiled. To prepare a new air filter, 
contact your dealer and tell the air filter type number.Type number : MU03602
When you replace the lamp, please replace the air filter. An air filter of specified 
type will come together with a replacement lamp for this projector .
Cleaning the air filter
1....

64
1. Turn the projector off, and unplug the power cord. Allow the 
projector to cool sufficiently.
2. After making sure that the projector has cooled adequately,  
pull the slot cover forward, pushing slightly its edge up, and 
remove it from the projector.
3. Remove the battery case. 
Hold the battery case gutter by finger nail or other thing and pull 
out the battery case slowly from the battery slot.
4. Take the old battery out from the battery case.
5. Replace a new battery. 
Replace battery with...

65
Maintenance
Inside of the projector
In order to ensure the safe use of your projector, please have it cleaned and 
inspected by your dealer about once every year.
Caring for the lens
If the lens is flawed, soiled or fogged, it could cause deterioration of display 
quality. Please take care of the lens, being cautious of handling.
1. Turn the projector off, and unplug the power cord. Allow the projector to cool 
sufficiently.
2. After making sure that the projector is cool adequately, lightly wipe the...

66
Troubleshooting
If an abnormal operation should occur, stop using the projector immediately. 
Troubleshooting
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.
Related messages
When some message appears, check and cope with it according to the following 
table. Although these messages...

67
Troubleshooting
Regarding the indicator lamps
When operation of the LAMP, TEMP and POWER indicators differs from usual, 
check and cope with it according to the following table.
POWER 
indicator LAMP 
indicator TEMP 
indicator Description
Lighting
In Orange Turned
off Turned
off
The projector is in a standby state.Please refer to the section “Power on/off”.
Blinking
In Green Turned
off Turned
off
The projector is warming up.Please wait.
Lighting
In Green Turned
off Turned
off
The projector is in an on...

68
Troubleshooting
Regarding the indicator lamps (continued)
POWER 
indicator LAMP 
indicator TEMP 
indicator Description
Blinking In Red or
Lighting In Red Turned
off Lighting
In Red
There is a possibility that the interior portion 
has become heated.
Please turn the power off, and allow the projector to cool down at least 
20 minutes. After the projector has sufficiently cooled down, please make 
confirmation of the following items, and then turn the power on again.
• Is there blockage of the air...

69
Troubleshooting
Phenomena that may be easy to be mistaken for machine defects
About the phenomenon confused with a machine defect, check and cope with it 
according to the following table.
PhenomenonCases not involving a machine defectReference
page
Power does not  come on.
The electrical power cord is not plugged in.
Correctly connect the power cord. 11
The main power source has been interrupted during 
operation such as by a power outage (blackout), etc.
Please disconnect the power plug from the...

70
Phenomena that may be easy to be mistaken for machine defects (continue\
d)
PhenomenonCases not involving a machine defectReference
page
No pictures are displayed.
(continued)
The brightness is adjusted to an extremely low level.
Adjust BRIGHTNESS to a higher level using the menu 
function or the remote control. 24, 25
The computer cannot detect the projector as a plug 
and play monitor.
Make sure that the computer can detect a plug and play 
monitor using another plug and play monitor. 9
The BLANK...