Epson Powerlite 7550c Users Guide

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You should already have connected the power cord, the projector’s 
video cable, and any other cables required for the equipment you are 
using, as described in Chapter 1.
Note: To keep the illustrations in this section simple, the pictures 
show only how to connect the ELP Link III cables; they don’t show 
the power, video, or other cables you already connected.
Connecting to a PC Desktop or Laptop
The following instructions explain how to connect the ELP Link III 
cables to your PC desktop or laptop computer. The steps are 
identical for both types of computers except where noted otherwise.
You must connect both the main cable and the 9-pin serial cable that 
came with the ELP Link III kit to use the ELP Link III software and 
the Effects buttons on the remote control. If you want to use your 
remote control as a computer mouse, you need to connect either the 
PS/2 or the serial mouse cable that came with the kit.
Before you start, make sure the projector and computer are turned 
off. 
						

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89
 
Note: This illustration shows a desktop, but the steps are the same if 
you have a laptop.
1. If you connected the PS/2 mouse cable that came with the 
projector—as described on page 26 (desktop) or page 30 
(laptop)—disconnect it from the computer and the projector.Mouse/Com port
main cablePS/2 mouse cable
9-pin serial cable 
						

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2. Connect the round end of the main cable to the projector’s 
Mouse/Com port.
3. Connect one end of the PC serial cable to the PC SERIAL 
terminal on the square end of the main cable.
Note: You won’t be able to use the ELP Link III software if your 
system has only one serial port that is being used to support a 
serial mouse. 
						

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91
4. Connect the other end of the PC serial cable to the serial port on 
the back of your computer.
5. If you want to use the remote control as a mouse for your 
computer, connect the 9-pin end of the PS/2 mouse cable that 
came with your ELP Link III kit to the MOUSE terminal on the 
square end of the main cable.
Note: If your computer uses a serial mouse, perform steps 5 and 
6 using the serial mouse cable that came with your ELP Link III 
kit instead of the PS/2 mouse cable.
6. Connect the other end of the PS/2 mouse cable to your 
computer’s mouse port.
7. Tighten the screws on all connectors.
8. If you have a laptop, configure it to work with an external 
mouse. You may have to set the display to appear on both the 
laptop’s screen and the projector. Some laptops let you change 
this setting with the keyboard’s function keys, or by using a 
setup utility provided by the computer manufacturer. Check 
your laptop’s manual for instructions. 
9. Go to page 96 to install the software. 
						

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Connecting to a Macintosh Desktop or PowerBook
The following instructions explain how to connect the ELP Link III 
cables to your Macintosh desktop or PowerBook. The steps are the 
same for both types of computers except where noted otherwise. 
You must connect both the main cable and the Mac serial cable that 
came with the ELP Link III kit to use the ELP Link III software and 
the Effects buttons on the remote control. If you want to use your 
remote control as a computer mouse, you need to connect the Mac 
mouse cable that came with the kit.
Before you start, make sure the projector and computer are turned 
off. 
						

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93
Note: This illustration shows a desktop, but the steps are the same if 
you have a PowerBook.
1. If you connected the Mac mouse cable that came with the 
projector—as described on page 36 (desktop) or page 42 
(PowerBook)—disconnect it from your computer and the 
projector.
Mac serial cable
Mac mouse cable
main cable Mouse/Com port 
						

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2. Connect the round end of the main cable to the projector’s 
Mouse/Com port.
3. Connect one end of the Mac serial cable that came with the ELP 
Link III kit to the MAC SERIAL terminal on the square end of 
the main cable.
4. Connect the other end of the Mac serial cable to the  printer 
or   modem port on the back of your computer. 
						

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95
5. If you want to use the remote control as a mouse for your 
Macintosh, connect the 9-pin end of the Mac mouse cable that 
came with the ELP Link III kit to the MOUSE terminal on the 
square end of the main cable.
6. Connect the other end (labeled MAC MOUSE) of the Mac 
mouse cable that came with the ELP Link III kit to the mouse 
port on your computer.
Note: If you have a PowerBook, you may need to choose 
Mirroring in the Display Control Panel to display the image on 
the PowerBook screen as well as the projector screen. See your 
Macintosh documentation for details. (This step is not 
necessary on some newer systems, which can detect a dual 
video signal.)
7. Go to page 97 to install the software. 
						

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Installing the ELP Link III Software
You can use the ELP Link III software on any Windows system, and 
on Macintosh OS System 7.x and OS System 8.x. 
Installing the Software for Windows
1. Turn on your computer and start Windows. 
2. Close any open Windows applications and turn off any screen 
savers.
3. Insert the Projector Software CD into your CD-ROM drive.
4. If you have Windows 95, 98, or NT, the installer program 
should start automatically. Go to step 5. If it doesn’t, click Start, 
then Run and type E:\SETUP (substitute the correct drive letter 
for your CD-ROM drive if it is not E). Then click OK.
If you have Windows 3.x, open Program Manager and select 
Run from the File menu. In the Run dialog box, type E:\SETUP 
(substitute the correct drive letter for your CD-ROM drive if it 
is not E), then click OK. 
5. When you see the ELP Link III welcome screen, select the 
language you want to use and click OK. 
6. Select your projector model (ELP/EMP/PowerLite 5500 [or 
7500] series) from the pull-down list and click Next.  
						

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97
7. The next screen asks if you want to install the ELP Link III 
User’s Guide and Adobe
® Acrobat
® Reader. Select the User’s 
Guide if you want to install it and Acrobat Reader if it is not 
already installed on your system. Then click Install.
8. Follow the instructions on the screen to install the software. 
When the installation is complete, click Finish.
Installing the Software on a Macintosh
1. Insert the Projector Software CD into your CD-ROM drive.
2. Double-click the ELP Link icon if the program doesn’t open 
automatically. Then double-click the Installer icon. You see a 
dialog box asking you to select a language to use.
3. Select a language and click OK. 
4. Select your projector model (ELP/EMP/PowerLite 5500 [or 
7500] series) from the pull-down list and click OK. You see the 
software license agreement. 
5. Read the agreement and click Accept to continue. You see the 
Installer screen.
6. Select either Easy Install or Custom Install from the pull-down 
list at the top of the screen. The Easy installation automatically 
installs the ELP Link III software, the online ELP Link III 
User’s Guide and Acrobat Reader (if it is not already installed 
on your system). If you select Custom Install, you then need to 
select which of the following items to install: ELP Link III 
V2.0, ELP Link III User’s Guide, and Acrobat Reader.