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 projector to cool for at least 45 minutes.
2. Prepare a new lamp.   
If the projector is mounted on a ceiling, or if the lamp 
has broken, also ask the dealer to replace the lamp.
In case of replacement by yourself,
3. Loosen the screw (marked by arrow) of the lamp cover 
and then slide the lamp cover to the side to remove it.
4. Loosen the 2 screws (marked by arrow) of the 
lamp, and slowly pick up the lamp by the handle.  
It may make it easy to take the lamp out slightly 
toward the control panel of the projector.
5. Insert the new lamp, and retighten firmly the 
2 screws of the lamp that are loosened in the 
previous process to lock it in place. Tighten the 
screw   first, then screw 
.
6. Slide the lamp cover back in place and firmly 
fasten the screw of the lamp cover.
7. Turn the projector on and reset the lamp time 
using the LAMP TIME item in the OPTION menu. 
(1) Press the MENU button to display a menu. 
(2) Point at the “Go to Advanced Menu …” in the menu  using the ▼/▲ button, then press the ► button.
(3) 
Point at the “OPTION” in the left column of the menu 
using the ▼/▲button, then press the ► button.
(4) Point at the “LAMP TIME” using the ▼/▲ button, then press the ► button. A  dialog will appear.
(5) 
Press the ▲ button to select “RESET” on the dialog. It performs resetting the lamp time.
Maintenance
NOTE  • Please reset the lamp time only when you have replaced the lamp, 
for a suitable indication about the lamp.
The lamp cover
The handle1
2
CAUTION  ►Do not touch any inner space of the projector, while the lamp 
is taken out. 
						

							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 mercury to escape from the projector’s vent holes.
►About disposal of a lamp: This product contains a mercury lamp; do not put 
it in a trash. Dispose of it in accordance with environmental laws. 
•   For lamp recycling, go to www.lamprecycle.org. (in the US).
•   For product disposal, contact your local government agency  
or www.eiae.org (in the US) or www.epsc.ca (in Canada).
For more information, call your dealer.
•  If  the  lamp  should  break  (it  will  make  a  loud  bang  when  it  does), 
unplug  the  power  cord  from  the  outlet,  and  make  sure  to  request  a 
replacement  lamp  from  your  local  dealer.  Note  that  shards  of  glass 
could damage the projector’s internals, or cause injury during handling, 
so please do not try to clean the projector or replace the lamp yourself.
•  If  the  lamp  should  break  (it  will  make  a  loud  bang  when  it  does), 
ventilate  the  room  well,  and  make  sure  not  to  breathe  the  gas  that 
comes out of the projector vents, or get it in your eyes or mouth.
• Before replacing the lamp, turn the projector off and unplug the power 
cord,  then  wait  at  least  45  minutes  for  the  lamp  to  cool  sufficiently. 
Handling  the  lamp  while  hot  can  cause  burns,  as  well  as  damaging  the 
lamp.
• Never unscrew except the appointed (marked by an arrow) screws.
•  Do  not  open  the  lamp  cover  while  the  projector  is  suspended  from 
above.  This  is  dangerous,  since  if  the  lamp’s  bulb  has  broken,  the 
shards  will  fall  out  when  the  cover  is  opened.  In  addition,  working  in 
high  places  is  dangerous,  so  ask  your  local  dealer  to  have  the  lamp 
replaced even if the bulb is not broken.
•  Do  not  use  the  projector  with  the  lamp  cover  removed. At  the  lamp 
replacing,  make  sure  that  the  screws  are  screwed  in  firmly.  Loose 
screws could result in damage or injury.
• Use only the lamp of the specified type.
•  If  the  lamp  breaks  soon  after  the  first  time  it  is  used,  it  is  possible 
that  there  are  electrical  problems  elsewhere  besides  the  lamp.  If  this 
happens, contact your local dealer or a service representative.
• 
Handle with care: jolting or scratching could cause the lamp bulb to burst during use.• Using the lamp for long periods of time could cause it dark, not to light 
up  or  to  burst.  When  the  pictures  appear  dark,  or  when  the  color  tone 
is  poor,  please  replace  the  lamp  as  soon  as  possible.  Do  not  use  old 
(used) lamps; this is a cause of breakage. 
Disconnect 
the plug 
from the  power outlet 
						

							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. 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. While supporting the projector with one hand, 
use your other hand to pull the filter cover 
forward in the direction of the arrow.
4. Use a vacuum cleaner for the filter ventilation of 
the projector. And clean the air filter that is set 
at one side of the filter cover by using a vacuum 
cleaner over the other side of the filter cover.
Please replace the air filter when it is damaged or 
too soiled. When the air filter is set, take its half 
moon shape cut part to the swelled part of the 
filter cover. 
5. Put the filter unit back into the projector.
6. Turn the projector on and reset the filter time 
using the FILTER TIME item in the EASY MENU. 
(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 “RESET” on the dialog. It performs resetting the  filter time.
Maintenance
Air filter
NOTE  • 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. 
The filter cover
The air filter is set in the reverse 
side
Swelled part
Air filter
Filter cover
WARNING   ►Before taking care of the air filter, make sure the power cable 
is not plugged in, then allow the projector to cool sufficiently. 
►
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. 
						

							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  HITACHI MAXELL, Part No.CR2032 
or CR2032H  only. Use of another battery may present a risk 
of fire or explosion.  
Put a new battery into battery case. Please make sure that 
the + is facing upward. Insert the battery case slowly into the 
battery slot until you hear the snap.
6. Close the slot cover. 
Replace the slot cover by reversing the procedure used 
when removing the cover.
Maintenance
WARNING  ►Always handle the batteries with care and use them only as 
directed. Battery may explode if mistreated. Do not recharge, disassemble or 
dispose of in fire. 
And also improper use may result in cracking or leakage, which could result in 
fire, injury and/or pollution of the surrounding environment.
• Be sure to use only the batteries specified. Do not use batteries of dif ferent 
types at the same time. Do not mix a new battery with used one.
• 
Make sure the plus and minus terminals are correctly aligned when loading a battery.
• Keep a battery away from children and pets. If swallowed consult a physician 
immediately for emergency treatment.
• Do not short circuit or solder a battery.
• 
Do not allow a battery in a fire or water. Keep batteries in a dark, cool and dry place. 
• If you observe a leakage of a battery, wipe out the flower and then replace a battery. 
If the liquid adheres to your body or clothes, rinse well with water immediately.
• Obey the local laws on disposing the battery.
Internal clock batter y 
Consumption of the battery makes the clock not to work correctly. When the clock is wrong or it has 
stopped, please replace the battery according to the following procedures.
S D  CAR D
Slot Cover
Battery Slot
Battery Case
Battery
Battery  Case
Battery Case
Battery (+)
Battery (-)
NOTE  • The internal clock’s time will be reset when the battery is removed. 
Please reconfigure the time via the menu or a web browser after replacing the battery.
(  4.1.8 Date/Time Settings of the User’s Manual - Network guide) 
						

							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 lens 
with a commercially available lens-cleaning wipe. Do not touch the lens 
directly with your hand.
Caring for the cabinet and remote control
Incorrect care could have adverse influence such as discoloration, peeling paint, 
etc.
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.
Other care 
WARNING  ►Before caring, make sure the power cable 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.
CAUTION  ►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. 
						

							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 will be automatically disappeared around several 
minutes, it will be reappeared every time the power is turned on.
MessageDescription
NO INPUT IS DETECTED
There is no input signal.  
Please confirm the signal input connection, and the status 
of the signal source.
SYNC IS OUT OF RANGE
    
                fH   kHz  fV  HzThe 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.
CHECK THE AIR FLOW
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?
If the same indication is displayed after the remedy, please set 
FAN SPEED of the SERVICE item in the OPTION menu to HIGH.
REMINDER
*** HRS PASSED AFTER THE  LAST FILTER CHECK. 
FILTER MAINTENANCE IS ESSENTIAL
 TO REMOVE WARNING MESSAGE,
RESET FILTER TIMER.
SEE MANUAL FURTHER INFO.
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 “Air Filter” section of this manual. 
After you have cleaned or changed the air filter, please be 
sure to reset the filter timer (
63).
WARNING  ►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 your dealer or service company . 
						

							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 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 the  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 “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) 
						

							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 passage aperture?
• Is the air filter dirty?
• Does the peripheral temperature exceed 35°C?
If the same indication is displayed after the remedy, please set 
FAN SPEED of the SERVICE item in the OPTION menu to HIGH.
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 “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 the  4.1.7 Schedule settings of 
User's Manual - Network Guide for more information.)
NOTE  • 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.
Shutting the projector down
Only when the projector can not be turned off by usual 
procedure 
( 14), please push the shutdown switch 
using a pin or similar, and disconnect the power plug 
from the power outlet. Before turning it on again, wait 
at least 10 minutes to make the projector cool down 
enough.
Resetting all settings
When it is hard to correct some wrong settings, the FACTORY RESET function of the 
SERVICE item in the OPTION menu 
( 44) can reset all settings (except LANGUAGE, 
FILTER TIME, LAMP TIME, FILTER MESSAGE, MIU and etc.) to the factory default.
COMPUTER IN
USB
Shutdown switch 
						

							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 power outlet, 
and allow the projector to cool down at least 10 minutes, 
then turn the power on again.11, 14
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.61
Neither sounds
nor pictures are outputted.
The signal cables are not correctly connected.
Correctly connect the connection cables. 8
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.
16, 17
Sound does not  come out.
The signal cables are not correctly connected.
Correctly connect the audio cables. 8
The MUTE function is working.
Restore the sound pressing the 
MUTE or VOLUME button 
on the remote control. 15
The volume is adjusted to an extremely low level.
Adjust the volume to a higher level using the menu function 
or the remote control.35
The AUDIO setting is not correct.
Correctly set the AUDIO in the SETUP menu.
35
No pictures are  displayed.
The lens cover is attached.
Remove the lens cover. 14
The signal cables are not correctly connected.
Correctly connect the connection cables. 8
(continued on next page) 
						

							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 screen is displayed.
Press the BLANK button on the remote control.
21
Video screen
display freezes. The FREEZE function is working.
Press the FREEZE button to restore the screen to normal.
21
Colors have a faded- out
appearance, or Color tone is  poor.
Color settings are not correctly adjusted.
Perform picture adjustments by changing the COLOR 
TEMP, COLOR, TINT and/or COLOR SPACE settings, 
using the menu functions. 26, 30
COLOR SPACE setting is not suitable.
Change the COLOR SPACE setting to AUTO, RGB, 
SMPTE240, REC709 or REC601. 
30
Pictures appear  dark.
The brightness and/or contrast are adjusted to an 
extremely low level.
Adjust BRIGHTNESS and/or CONTRAST settings to a 
higher level using the menu function. 24, 25
The WHISPER function is working.
Select NORMAL for the WHISPER item in the SETUP 
menu.
24, 33
The lamp is approaching the end of its product 
lifetime.
Replace the lamp. 61
Pictures appear blurry.
Either the focus and/or horizontal phase settings are 
not properly adjusted.
Adjust the focus using the focus ring, and/or H PHASE 
using the menu function. 18, 29
The lens is dirty or misty.
Clean the lens referring to the section “Caring for the lens”.
65
Troubleshooting
NOTE  • Although bright spots or dark spots may appear on the screen, this 
is a unique characteristic of liquid crystal displays, and it does not constitute or 
imply a machine defect.