Acer Projector H7550ST User Manual

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English
Problems with the Projector
8 Image is stretched 
when displaying a 
widescreen 
DVD titleWhen you play a DVD encoded in anamorphic or 16:9 
aspect ratio you may need to adjust the following 
settings:
•If you play a 4:3 format DVD title, please change the 
format to 4:3 with the projector OSD.
•If the image is still stretched, you will also need to 
adjust the aspect ratio. Set up the display format to 
16:9 (wide) aspect ratio on your DVD player.
9 Image is too small 
or too large
•Adjust the zoom lever on the top of the projector.
•Move the projector closer to or further from the 
screen.
•Press MENU on the control panel or remote 
control. Go to Image > Aspect Ratio and try 
different settings.
10 Image has slanted 
sides
•If possible, reposition the projector so that it is 
centered on the screen and below the bottom of the 
screen.
•Press the Keystone correction keys on the control 
panel or remote control until the image becomes 
square.
•Press MENU on the control panel or remote 
control to open the OSD menu. Go to Image > 
Auto Keystone or Image > Manual Keystone 
to make adjustments.
11 Image is reversed
•Select Image > Projection Mode, Image > 
Projection Location on the OSD and adjust the 
projection direction.
# Condition Solution
1 The projector stops responding 
to all controlsIf possible, turn off the projector, then 
unplug the power cord and wait at least 30 
seconds before reconnecting power.
2 Lamp burns out or makes a 
popping soundWhen the lamp reaches the end of its useful 
life, it will burn out and may make a loud 
popping sound. If this happens, the projector 
will not turn on until the lamp module has 
been replaced. To replace the lamp, follow 
the procedures in the Replacing the Lamp 
section. 
						

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English
OSD Messages
# Condition Message Reminder
1 Message Fan Fail - the system fan is not working.
Projector Overheated - the projector has exceeded its 
recommended operating temperature and must be allowed to 
cool down before it is used. Please also check the dust filters if 
they are installed. If the dust filter is clogged with dust, please 
clean it.
Replace the lamp - the lamp is about to reach its maximum 
lifetime. Prepare to replace it soon.
Fan Fail.
Lamp will automatically turn off soon.
Projector Overheated.
Lamp will automatically turn off soon.
Lamp is approaching the end of its useful life in full power operation.
Replacement suggested! 
						

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EnglishLED & Alarm Definition Listing
LED Messages
Message Power LED LAMP LED TEMP LED
Red Blue Red Red
Standby
(Power cord plugged in)V-- -- --
Power on -- V -- --
Lamp retry -- Quick 
flashing-- --
Turning off (Cooling 
state)Quick 
flashing-- -- --
Turning off (Cooling 
completed)V-- -- --
Error (Thermal failure) -- V -- V
Error (Fan lock failure) -- V -- Quick 
flashing
Error (Lamp breakdown) -- V V --
Error (Color wheel 
failure)-- V Quick 
flashing-- 
						

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English
Using the inner connector(s)
Turn the projector off by pressing   (POWER). Allow the projector at least 45 
minutes to cool down. Disconnect the power cord.
1 Use a screwdriver to remove the screw(s) from the cover. (Illustration #1)
2 Push up and remove the cover. (Illustration #2)
3 Locate the HDMI (MHL) connector beside the focus/zoom ring.
4 Put the bottom of the WirelessHD dongle (optional accessory) or other 
HDMI/MHL dongle into the projector first (Illustration #3) and then insert 
the WirelessHD dongle into the HDMI (MHL) connector. (Illustration #4)
5 A micro USB cable is also available if you need to power the HDMI/MHL 
dongle.
6 Replace the cover and tighten the screw(s). (Illustration #5 - #6)
1
6
5
24
34
3 
						

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EnglishReplacing the Lamp
Use a screwdriver to remove the screw(s) from the cover, and then pull out the 
lamp.
The projector will detect the lamp life itself. It will show you a warning message 
Lamp is approaching the end of its useful life in full power operation. 
Replacement Suggested! When you see this message, change the lamp as soon 
as possible. Make sure the projector has been cooled down for at least 45 
minutes before changing the lamp.
Warning: Lamp compartment is hot! Allow it to cool down before 
changing lamp!
To remove the lamp:
Turn the projector off by pressing   (POWER). Allow the projector at least 45 
minutes to cool down. Disconnect the power cord.
1 Use a screwdriver to remove the screw(s) from the cover. (Illustration #1)
2 Push up and remove the cover.
3 Remove the lamp protection film (Illustration #2).
4 Remove the screw that secures the lamp module (Illustration #3).
5 Disconnect the lamp connector from the projector. Lift the handle so that 
it stands up. Pull out the lamp module by force (Illustration #4).
To replace the lamp module, use a new lamp and reverse the above steps 
(Illustrations #  - # ).
Warning: To reduce the risk of personal injury, do not drop the 
lamp module or touch the lamp bulb. The bulb may shatter and 
cause injury if it is dropped.
8
6 54 321
2
12
18
7
58 
						

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English
Ceiling Mount Installation
If you wish to install the projector using a ceiling mount, please refer to the 
steps below:
1 Drill four holes into a solid, structurally sound part of the ceiling, and 
secure the mount base.
Note: Screws are not included. Please obtain the appropriate 
screws for your type of ceiling.
2 Secure the ceiling rod using the appropriate type of cylinder screws.
20 mm13mm
8.4mm130 mm
49.9mm
Short Rod
Screw Type A
50 mm length / 8 mm diameter -Ceiling Mount Base
- Attach to ceiling
Long Rod
Extension Rod
Allen Key
- For tighten/loosen
Tightening Screw
Medium RodLarge Cylinder Cap 
						

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English3 Use the appropriate number of screws for the projector size to attach the 
projector to the ceiling mount bracket.
Note: It is recommended that you keep a reasonable space 
between the bracket and the projector to allow for proper heat 
distribution. Use two washers for extra support, if deemed 
necessary.
4 Attach the ceiling bracket to the ceiling rod.
Smaller Washer
Large Washer
Projector Bracket
Supports projector and 
allows for adjustments   Screw Type B
Spacer
- For heat dissipation
Screw Type A
50 mm length - 
/8 mm diameterLarge Cylinder Cap
Allen Key
- For tighten/loosen Tightening Screw 
						

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English
5 Adjust the angle and positioning as necessary.
Note: The appropriate type of screw and washer for each model is 
listed in the table below. 4 mm diameter screws are enclosed in 
the screw pack.
Screw Type B Washer Type
Diameter (mm) Length (mm) Large Small
425VV
30
Allen KeyTightening Screw
Allen Key
Tightening Screw
137 mm
80 mm
153.31 mm16.3 mm
30.48 mm
110.48 mm 
						

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EnglishSpecifications
The specifications below are subject to change without notice. For final specs, 
please refer to Acers marketing documentation.
Projection system
DLP™
Resolution Native: 1080p (1920 x 1080)
Maximum: WUXGA (1920 x 1200) (supports reduce 
blanking only)
Computer compatibility Refer to the Compatibility Modes section for more 
information.
Video compatibility NTSC (3.58/4.43), PAL (M/N), PAL 60, SECAM, HDTV 
(720p, 1080i, 1080p), EDTV (480p, 576p), SDTV (480i, 
576i)
Aspect ratio Auto, 4:3, 16:9, Full, Letter Box
Displayable colors 1.07 billion colors
Projection lens
•H7550ST/E155S/HE-815ST/H1P1403/H7550STz: F 
= 2.6 - 2.78, f = 10.20 mm - 11.22 mm, 1:1.1 
Manual Zoom and Manual Focus
•H7550BD/E155D/HE-815J/H1P1406/H7550BDz: F 
= 2.59 - 2.87, f = 16.88 mm - 21.88 mm, 1:1.3 
Manual Zoom and Manual Focus
Projection screen size (diagonal) 
with clear focus
•H7550ST/E155S/HE-815ST/H1P1403/H7550STz: 
60 (91 cm) - 120 (183 cm)
•H7550BD/E155D/HE-815J/H1P1406/H7550BDz: 
60 (153 cm) - 180 (460 cm)
Projection distance with clear 
focus
•H7550ST/E155S/HE-815ST/H1P1403/H7550STz: 
3.0 (0.9 m) - 15.0 (4.6 m)
•H7550BD/E155D/HE-815J/H1P1406/H7550BDz: 
4.9 (1.5 m) - 19.7 (6 m)
Throw ratio
•H7550ST/E155S/HE-815ST/H1P1403/H7550STz: 
95±3% @ 1.44 m (0.69 - 0.76)
•H7550BD/E155D/HE-815J/H1P1406/H7550BDz: 
95±3% @ 2.43 m (1.15 - 1.5)
Horizontal scan rate 31 - 99 KHz
Vertical refresh scan rate 23 - 120 Hz
Keystone correction +/-30 Degrees (Vertical and horizontal), Manual & 
Auto
Digital zoom 2 X
Audio 10W x 2
Weight Approximate 3.0 kg (6.61 lbs.)
Dimensions (W x D x H) 356 x 241 x 103 mm (11.7’ x 7.9’ x 3.4’)
Power supply Universal AC input 100 - 240 V, input frequency 50/60 
Hz
Power consumption (typical) 325 W
Operating temperature 0ºC to 40ºC / 32ºF to 104ºF 
						

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English
* Design and specifications are subject to change without notice.
I/O connectors•Power socket x 1
•USB x 1 (Type mini B)
•VGA input x 1
•VGA output x 1
•Composite video x 1
•S-Video x 1
•Component Video (Y/Cb/Cr, Y/Pb/Pr) x 1
•RS232 x 1
•HDMI (MHL) x 2
•HDMI x 1
•3.5 mm audio jack input x 1
•3.5 mm audio jack output x 1
Standard package contents
•AC power cord x 1
•VGA cable x 1
•Remote control x 1
•Battery x 2 (for the remote control)
•Users guide (CD-ROM) x 1
•Quick start guide x 1
•Security card x 1
Accessory (optional)
•Composite video cable x 1
•Carrying case x 1
•WirelessHD dongle kit x 1