Acer Projector H7550ST User Manual

31
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...

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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...

33
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...

35
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...

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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...

37
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...

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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 

39
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...

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* 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...