HP Ep7120 Home Cinema Digital Projector Users Guide

							Installing permanently
User’s Guide 51Video functions
Command Parameters Description
CSPC0 to 2, ? Sets or queries the active color space: 
0=RGB, 1=YPbPr, 2=YCbCr.
PMOD0,1,3,4,5,? Sets or queries the picture mode: 
0=computer, 1=movie, 3=sports, 4=TV, 
5=custom.
VSHFvalue, +, -, ? Sets or queries the vertical shift of the 
projected image: usable range is 
determined by the active input source.
HSHFvalue, +, -, ? Sets or queries the horizontal shift of the 
projected image: usable range is 
determined by the active input source.
BRT0 to 100, +, -, ? Sets or queries the brightness.
CON0 to 100, +, -, ? Sets or queries the contrast.
SAT0 to 100, +, -, ? Sets or queries the color saturation.
TNT-45 to 45, +, -, ? Sets or queries the tint.
CTMP0 to 2, ? Sets or queries the color temperature: 
0=warm, 1=neutral, 2=cool.
SHRP0 to 12, +, -, ? Sets or queries the sharpness.
PENH0 to 6, +, -, ? Sets or queries the picture 
enhancement setting.
KEYV-50 to 50, +, -, ? Sets or queries the vertical keystone: 
0=no keystone adjustment, 
1 to 50=shrinks the top of the display, 
-1 to -50=shrinks the bottom of the 
display.
ASPT0,1,4,? Sets or queries the aspect ratio: 
0=1-to-1, 1=Best Fit, 4=Reduced.
SYNCNone Automatically resynchronizes the 
projector to the active computer input 
source.
FREQ-50 to 50, +, -, ? Sets or queries the projector’s timing 
relative to the active computer input 
source. 
						

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TRKvalue, +, -, ? Sets or queries the synchronization of 
the projector to the active computer 
input source.
VPOSvalue, +, -, ? Sets or queries the vertical positioning 
of the projected image: usable range is 
the maximum and minimum allowed by 
the active computer input source.
HPOSvalue, +, -, ? Sets or queries the horizontal 
positioning of the projected image: 
usable range is the maximum and 
minimum allowed by the active computer 
input source.
HIDE0, 1, ? Sets or queries picture blanking: 0=not 
hidden, 1=hidden.
WIDE0, 1, ? Sets or queries wide screen mode: 
0=normal, 1=wide.
KEYRNone Resets keystone to zero. Video functions 
(Continued)
Command Parameters Description
Audio functions
Command Parameters Description
MUTE0, 1, ? Sets or queries audio muting: 0=not 
muted, 1=muted.
VOL0 to 31, +, -, ? Sets or queries audio volume: 0=off, 
31=maximum.
INTSP0, 1, ? Sets or queries usage of the internal 
speakers: 0=disabled, 1=enabled. 
						

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User’s Guide 53Setup functions
Command Parameters Description
LANG0 to 9, 11, ? Sets or queries the language used by 
the projector: 0=English, 1=French, 
2=Italian, 3=German, 4=Portuguese, 
5=Spanish, 6=Traditional Chinese, 
7=Simplified Chinese, 8=Korean, 
9=Japanese, 11=Dutch.
LHRS? Queries the time (in tenths of hours) that 
the lamp has been in use.
THRS? Queries the total time (in tenths of 
hours) that the projector has been in 
use.
POS0 to 3, ? Sets or queries the projector’s position: 
0=front table, 1=front ceiling, 2=rear 
table, 3=rear ceiling.
TMO5  to  20, ? Sets or queries the menu timeout setting 
(seconds)
VERS? Queries the projector model number and 
firmware version. The notification takes 
this form:
*VERS=”proj_model:proj_fw”
SNUM
? Queries the projectors serial number. 
						

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Power and status functions
Command Parameters Description
SHDNNone Puts the projector into cool-down state, 
and later into standby state. The 
projector sends a notification when it 
enters cool-down state (STAT=3), and 
another when it enters standby state 
(STAT=0). This keyword requires the 
projector to be in its on state (STAT=1).
✎Do not send any requests other 
than STAT in the time between 
the cool-down and standby state 
notifications. Otherwise, 
unexpected results can occur.
W or WAKENone Puts the projector into warm-up state, 
and later into on state. The projector 
sends a notification when it enters 
warm-up state (STAT=2), and another 
when it enters the on state (STAT=1). 
This keyword requires the projector to 
be in standby state (STAT=0).
✎Do not send any requests other 
than STAT in the time between 
the warm-up and on state 
notifications. Otherwise, 
unexpected results can occur.
STAT? Queries the projectors current state: 
0=standby state (off), 1=on, 2=warm-up 
state, 3=cool-down state, 4=audio-only 
state.
ALERTNot a request Notifies when a system alert condition 
occurs: 0=lamp life warning, 1=lamp life 
reached, 2=lamp faulty, 3=lamp 
problem, 4=internal temperature too 
high, 5=fan problem, 6=ambient 
temperature too high, 7=color wheel 
problem, 8=lamp cover open.
✎ALERT is sent only by the 
projector, and cannot be used in 
requests. 
						

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User’s Guide 55Simulated key presses
Command Parameters Description
MENUNone Simulates pressing the MENU key on 
keypad
ENTERNone Simulates pressing the OK key on 
keypad
LEFTNone Simulates pressing the Left Arrow key 
on keypad
RIGHTNone Simulates pressing the Right Arrow key 
on keypad
UPNone Simulates pressing the Up Arrow key on 
keypad
DOWNNone Simulates pressing the Down Arrow key 
on keypad 
						

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							User’s Guide 57
6
Fixing problems
Troubleshooting suggestions
If you have a problem with your projector, check the following statement that 
most closely matches the nature of the problem, then look in that section of this 
chapter:
■“Warning light problems” on page 57
■“Start-up problems” on page 58
■“Picture problems” on page 58
■“Sound problems” on page 61
■“Interruption problems” on page 62
■“Remote control problems” on page 62
✎
If these suggestions do not solve your problem, go to 
http://www.hp.com/support for additional information. To contact HP, see 
Chapter 7, “Support and warranty.”
Warning light problems
If both red warning lights are blinking:
❏Allow the projector to cool down after it turns off. If this condition 
occurs after you restart the projector, an internal component has failed. 
Contact HP for assistance.
If the red temperature light is on or blinking:
❏Allow the projector to cool down after it turns off. Be sure that nothing is 
near or blocking the vents on the projector, and that the vents are free of 
lint and other objects. Remove any sources of excess heat in the room. 
Observe temperature and altitude limits (see “Specifications” on 
page 71). If the warning light turns on or blinks after you restart the 
projector, contact HP for assistance. 
						

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Fixing problems
If the red lamp light is on or blinking:
❏Allow the projector to cool down after it turns off. If the warning light 
turns on or blinks after you restart the projector, install a new lamp. If 
this occurs after you install a new lamp module, remove and reinstall the 
lamp module. If a new lamp does not fix the problem, contact HP for 
assistance.
If the red lamp light is flickering quickly:
❏Check that the cover around the lamp at the front of the projector is 
correctly installed and fully attached. Check the tab at the right side of 
the cover and the screw at the left side.
Start-up problems
If no lights or sounds turn on:
❏Be sure that the power cable is securely connected to the projector and 
the other end is plugged into an outlet with power.
❏Press the power button again.
❏Unplug the power cord for 15 seconds, then plug it in and press the 
power button again.
Picture problems
If a “waiting” message is displayed on a blank screen:
❏Press the source button on the projector or remote control one or more 
times until the correct source name is selected.
❏Be sure the external source is turned on and connected.
❏For a computer connection, ensure your notebook computer’s external 
video port is turned on. Refer to the computer manual. On some 
notebooks, for example, press the Fn + F4 or Fn+F5 function keys to turn 
on the external video port.
If the wrong input source is displayed:
❏Press the source button on the projector or the remote control one or 
more times to select another active input source. 
						

							Fixing problems
User’s Guide 59
If the image is out of focus:
❏Be sure the lens cover is open.
❏While displaying the on-screen menu, adjust the focus ring. (The image 
size should not change; if it does, you are adjusting the zoom, not the 
focus.)
❏Ensure the projection screen is 1 to 10 m (3 to 33 ft) from the projector.
❏Check the projection lens to see if it needs cleaning.
❏For a computer connection, set the display resolution on the computer to 
1024×768 pixels. If the computer has multiple monitors, adjust the 
resolution of the monitor assigned to the projector.
❏For a computer connected to the S-video port, the picture cannot be as 
high resolution as what you see on the computer display.
If an upside-down or reversed image is displayed:
❏The projector has been set to the wrong position setting. Press menu, go 
to Setup > Projector position, and select the correct setting.
If the image is too small or too large:
❏Adjust the zoom ring on top of the projector.
❏Move the projector closer to or farther from the screen.
❏On the projector or remote control, press the picture mode button one or 
more times to see if one of the picture modes makes the image the correct 
size.
❏Press menu, go to Picture > Customize picture mode > Stretch. Try 
the different settings.
❏If the source device sends wide-screen output, press menu, go to Picture 
> Shape settings, and try setting Widescreen input to Ye s .  Otherwise, 
set it to No.
If the image has slanted sides:
❏As much as possible, reposition the projector so that it is centered on the 
screen and below the bottom or above the top of the screen.
❏On the projector or remote control, press the keystone button until the 
sides are vertical. 
						

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If the image is stretched:
❏On the projector or remote control, press the picture mode button one or 
more times to see if one of the picture modes makes the image the correct 
size.
❏Press menu, go to Picture > Customize picture mode > Stretch. Try 
the different settings.
❏If the source device sends wide-screen output, press menu, go to Picture 
> Shape settings, and try setting Widescreen input to Ye s .  Otherwise, 
set it to No.
If the projected colors seem slightly wrong:
❏Press menu, go to Picture > Color settings, and adjust the color settings 
as needed.
❏Press menu, go to Picture > Color settings > Color space. Try the 
different settings.
❏Press menu, go to Help > Diagnostics, and run the color test.
If the projected colors seem completely wrong:
❏Be sure the pins on the cable connectors are not bent or broken.
❏Press menu, go to Picture > Color settings > Color space. Try the 
different settings.
❏Press menu, go to Help > Diagnostics, and run the color test.
❏Press menu, go to Picture > Color settings > Reset color settings, and 
press ok.
❏Press menu, go to Setup > Reset all settings, and press ok.
If the picture is not clear (ghost images, smearing, poor quality):
❏Be sure the video cable you are using is coaxial cable rated at 75 ohms. 
Any other cable or impedance rating can reduce picture quality.
❏The video cable connecting the video source to the projector probably 
must be higher quality, especially if the cable is longer than about 3 m 
(10 ft). Low-loss cable is recommended for longer distances to avoid 
degrading or losing the picture
If a DVI source is not displayed when the DVI port is selected:
❏Press menu, go to Setup > DVI compatibility, and select Standard 
DVI.