HP Cp-Aw250n Users Manual

							91
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 contact with your dealer and tell the following type 
number.
Cleaning and replacing the air filter
Type number : UX37191  (Filter set)
1.Turn the projector off, and unplug the power cord. 
Allow the projector to sufficiently cool down.
2.Use a vacuum cleaner on and around the filter cover.
3.Slide the filter unit upward to take it off from the 
projector.
4.Use a vacuum cleaner for the filter vent of the 
projector.
5.Take the fine meshed filter out while holding the 
filter cover. It is recommended to leave the coarse 
meshed filter in the filter cover as it is.
7.Put the fine meshed filter on the coarse meshed one, 
turning its stitched side up.
8.Put the filter unit back into the projector.
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
.
(continued on next page)
6.Use a vacuum cleaner on both sides of the fine 
meshed filter while holding it so it will not be sucked 
in. Use a vacuum cleaner for the inside of the filter 
cover to clean up the coarse meshed filter. If the 
filters are damaged or heavily soiled, replace them 
with new ones.
Stitched  
side
 Filter cover
Filter unitIntake vent
 Filter cover
Filter
 (coarse meshed)
Filter (fine meshed)
7.
3. 
						

							92
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 projector without the 
air filter or the filter cover. It could result in a fire or malfunction to the projector.
►Clean the air filter periodically. If the air filter becomes clogged by dust or the 
like, internal temperatures rise and could cause a fire, a burn or malfunction to 
the projector. WARNING
• Please replace the air filter when it is damaged or heavily soiled.
• When you replace the projection lamp, please replace the air filter . An air filter 
of specified type will come together with a replacement lamp for this projector .
• Please reset the filter time only when you have cleaned or replaced the air 
filter, for a suitable indication about the air filter.
• The projector may display the message such as “CHECK THE AIR FLOW” or 
turn off the projector, to prevent the internal heat level rising. NOTE (1) Press the MENU button to display a menu. 
(2)  
Point at the FILTER TIME using the ▼/▲ button, then press the ► button. 
A dialog will appear.
(3)   Press the ► button to select “OK” on the dialog. It performs resetting the 
filter time. 
						

							93
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 well with water. When a battery 
leaked in the battery holder, replace the batteries after wiping the leakage out.
• Make sure the plus and minus terminals are correctly aligned when loading a battery.
• Do not work on a battery; for example recharging or soldering.
• 
Keep a battery in a dark, cool and dry place. Never expose a battery to a fire or water.
• Keep a battery away from children and pets. Be careful for them not to swallow 
a battery. If swallowed consult a physician immediately for emergency treatment.
• Obey the local laws on disposing a battery.
Replacing the internal clock batter y 
This projector has internal clock that uses a battery. When the clock of the network 
function does not work correctly, please try solution by replacement of the battery:
HITACHI MAXELL, part number CR2032  or CR2032H.
NOTE  • The internal clock will be initialized by removing the battery. For 
setting the clock, see the User's Manual - Network Guide .
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, slowly turn over the 
projector, so that the bottom is facing.
3.   Turn the battery cover fully in the direction 
indicated “OPEN” using a coin or the like, 
and pick the cover up to remove it.
4.   Pry up the battery using a flathead 
screwdriver or the like to take it out. While 
prying it up, put a finger lightly on the 
battery since it may pop out of the holder.
5.  Replace the battery with a new HITACHI 
MAXELL,
 Part No. CR2032 or CR2032H. 
Slide the battery in under the plastic claw, 
and push it into the holder until it clicks.
6.   Replace the battery cover in place, then 
turn it in the direction indicated “CLOSE” 
using such as coins, to fix.
OPEN
CLOSE Ã
OPEN
CLOSE
OPEN
CLOSE
OPEN
CLOSE
 Ã
Battery cover 
						

							94
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.Wipe softly the mirror and lens with a damped soft 
cleaning cloth for lens on the market, being careful 
not to give any damage on the mirror and lens. 
For around edge of the mirror and lens where might 
be difficult to be wiped out, please use an air blower 
for cameras on the market to clean up.
4.To close the lens door properly, please take the 
following procedure.
(1) Insert the power cord with the lens door opened.
(2)   The power indicator will light in orange, and the 
lens door closes automatically. Do not touch the 
lens door when the door is closing. Do not allow 
anything to obstruct the lens door.
• When the lens door is closed manually, it may not shut properly.
• The lens door may not close when the LENS DOOR LOCK function of the 
SERVICE item in the OPTION menu is set to ON.  Refer to the LENS DOOR 
LOCK function of the SERVICE item in the OPTION menu (
59).
NOTE
►Before caring for the projection mirror and lens, turn the 
projector off and unplug the power cord, then cool the projector sufficiently.
►Do not use a vacuum cleaner to clean the projection mirror or lens, since it 
might give some damage.
►Do not use cleaners or chemicals other than those specified in this manual. 
Pay special attention to the mirror and lens as these materials could cause 
serious damage to either. WARNING
►Be careful not to pinch your finger with the lens door, to prevent 
an injury. CAUTION
Cleaning cloth Blower
Maintenance 
						

							95
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.
►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, cleaners or chemicals near the projector. 
• Do not use aerosols or sprays. WARNING
►Please take right care of the projector according to the 
following. Incorrect care could cause not only an injury but adverse influence 
such as discoloration, peeling paint, etc. 
►Do not use cleaners or chemicals other than those specified in this manual. 
►Do not polish or wipe with hard objects.
NOTICE ►Do not directly touch the lens surface with hands. CAUTION
Inside of the projector
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 with gauze 
or a soft cloth. 
If the projector is extremely dirty, dip soft cloth in water or a neutral cleaner 
diluted in water, and wipe lightly after wringing well. Then, wipe lightly with a 
soft, dry cloth.
Incorrect care could have adverse influence such as discoloration, peeling paint, 
etc. Caring for the cabinet and remote control 
						

							96
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 cables, penetration 
of liquids or foreign matter, etc. should occur. In such cases, immediately disconnect 
the power plug from the power outlet. After making sure that the smoke or odor has 
stopped, contact to your dealer or service company.WARNING
Related messages
When some message appears, check and cope with it according to the following table. 
Although these messages will be automatically disappeared around several minutes, it will 
be reappeared every time the power is turned on.
Message Description
There is no input signal. 
Please confirm the signal input connection, and the status 
of the signal source.
The USB TYPE B port is selected as the picture input 
source even if MOUSE is selected for USB TYPE B  ( 54)
.
Select USB DISPLAY in the dialog to project the picture 
input to the USB TYPE B port. In this case, you cannot use 
the simple mouse and keyboard function. Otherwise select 
other port for picture input.
Projector is waiting for an image file.
Check the hardware connection, settings on the projector 
and network-related settings.
The computer-Projector network connection might be 
disconnected. Please re-connect using “Connect button” of 
the “LiveViewer”. (
 Using the “LiveViewer” in the User's 
Manual - Network Guide )
The horizontal or vertical frequency of the input signal is 
not within the specified range.
Please confirm the specs for your projector or the signal 
source specs.
An improper signal is input. 
Please confirm the specs for your projector or the signal 
source specs.
Troubleshooting
(continued on next page) 
						

							97
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 1600m or 
higher? If the projector is used at an altitude of about 1600m 
or higher, set FAN SPEED of the SERVICE item in the 
OPTION menu to HIGH  (
58)
.
A note of precaution when cleaning the air filter. 
Please immediately turn the power off, and clean or change 
the air filter referring to the “Cleaning and replacing the 
air filter” section of this manual. After you have cleaned or 
changed the air filter, please be sure to reset the filter timer 
(
 55, 92).
The button operation is not available.
Troubleshooting
Related messages (continued) 
						

							98
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 state.Ordinary operations may be performed.
Blinking
In Orange Turned
off Turned
off
The projector is cooling down.Please wait.
Blinking In Red (discre-
tionary) (discre-
tionary)
The projector is cooling down. A certain error 
has been detected.
Please wait until  POWER indicator finishes blinking, 
and then perform the proper measure using the item 
descriptions below.
Blinking In Red or
Lighting In Red Lighting
In Red Turned
off
The lamp does not light, and there is a possibility 
that 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 passage aperture?
• Is the air filter dirty?
• Does the peripheral temperature exceed 35°C?
If the same indication is displayed after the remedy, 
please change the lamp referring to the section 
“Replacing the lamp”.
Blinking In Red or
Lighting In Red Blinking
In Red Turned
off
The lamp cover has not been properly fixed. Please turn the power off, and allow the projector to 
cool down at least 45 minutes. After the projector has 
sufficiently cooled down, please make confirmation of 
the attachment state of the lamp cover. After performing 
any needed maintenance, turn the power on again. 
If the same indication is displayed after the remedy, 
please contact your dealer or service company.
BlinkingIn Red or
Lighting In Red Turned
off Blinking
In Red
The cooling fan is not operating.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 
that no foreign matter has become caught in the fan, 
etc., and then turn the power on again.
If the same indication is displayed after the remedy, 
please contact your dealer or service company.
(Continued on next page) 
						

							99
Troubleshooting
Regarding the indicator lamps (continued)
• When the interior portion has become overheated, for safety purposes, 
the projector is automatically shut down, and the indicator lamps may also be 
turned off. In such a case, disconnect the power cord, and wait at least 45 minutes. 
After the projector has sufficiently cooled down, please make confirmation of the 
attachment state of the lamp and lamp cover, and then turn the power on again.NOTE
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 passage aperture?
• Is the air filter dirty?
• Does the peripheral temperature exceed 35°C?
• Is the projector used at an altitude of about 1600m or 
higher? If the projector is used at an altitude of about 
1600m or higher, set FAN SPEED of the SERVICE 
item in the OPTION menu to HIGH  (
58).
Lighting In Red Turned
off Turned
off
The lens door is not opened properly.One of the followings has been happened.
• The lens door is not opened properly, when the projector 
is turned on.
• The lens door position is shifted, while the projector is working.Restart the projector, after confirming that there is nothing 
that the lens door hits while opening or closing.
Lighting
In Green Simultaneous
blinking in  Red
It is time to clean the air filter.Please immediately turn the power off, and clean or 
change the air filter referring to the section “Cleaning 
and replacing the air filter”. After cleaning or changing 
the air filter, please be sure to reset the filter timer. 
After the remedy, reset the power to ON.
Lighting
In Green Alternative
blinking in  Red
There is a possibility that the interior portion 
has become overcooled.
Please use the unit within the usage temperature 
parameters (5°C to 35°C).  
After the treatment, reset the power to ON.
Blinking In  Green for approx. 3 seconds. Turned
off Turned
off At least 1 Power ON schedule is saved to the 
projector.
Please refer to Schedule Settings
 section of User’s 
Manual - Network Guide. 
						

							100
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.14
The main power source has been interrupted during 
operation such as by a power outage (blackout), etc.
Please disconnect the power plug from the power outlet, 
and allow the projector to cool down at least 10 minutes, 
then turn the power on again.
14, 18
Either there is no lamp and/or lamp cover, or either 
of these has not been properly fixed.
Please turn the power off and disconnect the power 
plug from the power outlet, and allow the projector to 
cool down at least 45 minutes. After the projector has 
sufficiently cooled down, please make confirmation of 
the attachment state of the lamp and lamp cover, and 
then turn the power on again.
89
Neither sounds
nor pictures are outputted.
The signal cables are not correctly connected.
Correctly connect the connection cables.9 ~ 13
Signal source does not correctly work.
Correctly set up the signal source device by referring to 
the manual of the source device.
–
The input changeover settings are mismatched.
Select the input signal, and correct the settings.20 ~ 22
The BLANK function for pictures and the MUTE 
function for sounds are working.
AV MUTE may be active. 
Refer to the item “Sound does not come out” and “No 
pictures are displayed” on the next page to turn off the 
MUTE and BLANK functions.
20, 27, 57
(Continued on next page)
Resetting all settings
When it is hard to correct some wrong settings, the FACTORY RESET function of 
SERVICE item in OPTION menu (
 63) can reset all settings (except settings such 
as LANGUAGE, LAMP TIME, FILTER TIME, FILTER MESSAGE, SECURITY and 
NETWORK) to the factory default.