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Multiple Upgrade Recommendation

If you intend to perform multiple hardware upgrades to your iMac, we recom-
mend that you complete the installation of the HARMONi first, then install the
remaining upgrades; 

complete each upgrade and test it before proceeding to the next

Update iMac Firmware

If your iMac is running a Mac OS version prior to 9.0, you must update the sys-
tem firmware, unless you have already done so in the past. 

1.

Insert the Mac OS 9.x CD into your computer’s CD-ROM drive. Open the
CD Extras folder and locate the Firmware Update folder containing the
About iMac Firmware Update 1.2 document.

2.

Double-click the About iMac Firmware Update 1.2 file. Print and read the
instructions. Close the document.

3.

Carefully follow the instructions to update the firmware on your iMac; if the
firmware on your iMac is up to date, no update will occur. 

Install Sonnet Software

1.

Insert the Sonnet Installer CD into your computer’s CD-ROM drive. Double-
click the HARMONi Installer icon to start the utility.

2.

Click the Install button to start the software installation; the process takes just
a few seconds.

3.

After the software installation is complete, click the Shut Down button to
shut down your computer.

Quick Start Guide for HARMONi G3

Support Note:

Before proceeding with any other part of this installa-

tion, you must ensure that your system has the latest firmware installed. 

If you have already installed Mac OS 9 or later, you may skip this section and go
to the next section, Install Sonnet Software.

Support Note:

Before

proceeding with the HARMONi hardware

installation, 

you must

run the Crescendo/WS and HARMONi Install 

application

. Otherwise, your system will not operate with HARMONi installed.

Also, ensure your system is NOT booted in Mac OS X, nor Mac OS X Classic 
mode; the Sonnet installation software will only function in Mac OS 8.1 through
OS 9.x. Quit any open applications and disable any security software installed in
your system. 

Please note that this installer only needs to be run once, prior to the

hardware installation.

Support Note:

Please familiarize yourself with the following instructions

before beginning the installation. If you feel you are unable to install the 

computer hardware, please contact a qualified computer technician. 

Sonnet

strongly recommends that a qualified technician perform this installation

.

Before proceeding with the installation, we recommend that you make a backup
of important information on your hard drive prior to installing new hardware or
software.

Summary of Contents for HARMONi G3

Page 1: ...Phillips screwdrivers Flat blade screwdriver Soft clean towel System Requirements The HARMONi requires the following in order to work in your system Fully operational original processor you must install Sonnet software prior to installing the HARMONi parts FireWire 2 3 3 or later this driver should be installed after HARMONi has been installed instructions follow Software updates and links are ava...

Page 2: ...e click the Shut Down button to shut down your computer Quick Start Guide for HARMONi G3 Support Note Before proceeding with any other part of this installa tion you must ensure that your system has the latest firmware installed If you have already installed Mac OS 9 or later you may skip this section and go to the next section Install Sonnet Software Support Note Before proceeding with the HARMON...

Page 3: ...move the screw if present securing the clamp on the left side Figure 4 Using a flat blade screwdriver unscrew the thumb screws securing the large connector to the assembly then disconnect the cable 3 Disconnect the remaining connectors from the logic board drive assembly Figure 5 Remove Connector 1 by pressing in its locking tab and pulling the connector straight out Remove Connector 2 by pulling ...

Page 4: ...cing you Figure 8 Remove Processor Card 1 Unhook a long edge of the metal shield covering the processor card then remove it from the logic board drive assembly Figure 9 2 While grasping the underside the logic board drive assembly and the top of the heat sink clip with one hand use a flat blade screwdriver to carefully unhook the heatsink clip from the processor card shield Figure 10 Remove the cl...

Page 5: ...rd aside on a static free surface 2 Remove the HARMONi processor card from its anti static bag making sure to handle the card by its edges Figure 14 If present on the card remove the foam block protecting the small 4 pin connectors 3 Turn the HARMONi processor card over so that the two long connectors are face up Figure 15 Align the RAM module removed from the bottom of the original processor card...

Page 6: ...e the card around until the connectors on the bottom of the card engage with the corresponding con nectors on the logic board Figure 17 2 Firmly press on the bottom right portion of the HARMONi processor card until the connectors are completely coupled Figure 18 3 With the two small sections of fins on the left place and center the heatsink on top of the HARMONi processor card above the DIMM slot ...

Page 7: ... different than the one pic tured 2 Install the replacement side plate securing it with the original flat head screws Figure 23 do not overtighten the screws Note that the side plate holes should line up with the connectors on the logic board drive assembly 3 Locate and remove the screw 1 Phillips securing the lower processor card shield to the logic board Figure 24 4 Screw in finger tight the sup...

Page 8: ...age making sure to handle the card by its edges Figure 28 9 Plug in the 2 pin connector at the end of the yellow wire to the adapter card s 2 pin connector Figure 29 Verify the connector is plugged in securely 10 Using the screw holes to align it set the adapter card on top of the side plate s brackets and the support standoff Figure 30 the small connectors on the bottom of the adapter card should...

Page 9: ...ly with the other then slowly lower the assembly into the computer Figure 34 If there is any resistance pull the assembly back out make sure all cables and connectors are routed prop erly then lower the assembly into the computer again 2 Carefully tilt the computer to check and verify that the CD ROM drawer is aligned properly in the opening in the front of the iMac Secure the logic board drive as...

Page 10: ...ight tones 3 Your iMac will restart Your accelerated machine should boot normally If Mac OS 9 2 or later is already installed in your system your iMac is ready to use and your installation is complete Otherwise continue reading Installing Mac OS 9 any version Only if you are upgrading to Mac OS 9 as part of this installation do so now oth erwise skip to the next section appropriate to your version...

Page 11: ... 9 1 CD Complete these steps only if you installed Mac OS 9 1 before installing the HARMONi upgrade If you installed Mac OS 9 1 after installing the HARMONi upgrade your installation is complete 1 Start up your computer from the Mac OS 9 1 CD and double click the Mac OS Install application In the Select Destination window click the Select button Proceed through the next several screens until you r...

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