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Quick Start Guide for HARMONi G3

11.

Verify the connectors on the adapter card and the HARMONi processor card
are aligned, then gently press down on the adapter card above the connec-
tors until the connectors are completely coupled 

(Figure 31)

.

12.

Secure the adapter card to the side panel brackets and to the support standoff
with the three supplied screws 

(Figure 32)

.

13.

Remove the protective backing sheet from the wire clamp, then press the
wire clamp onto the logic board as shown 

(Figure 33)

.

14.

Route the adapter card’s power cable around the shield, position the crimp
connector between the 4-pin connector and the Video connector, and secure
the power cable with the wire clamp. 

(Figure 33)

Reassemble Computer

1.

Pick up the logic board/drive assembly by the handle with one hand and
support the opposite side of the assembly 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 assembly to the computer with the two screws you removed pre-
viously 

(Figure 35)

.

9

Figure 33

Figure 32

Figure 31

Figure 34

Support Note:

Before reassembling the computer, make sure that its

cables are routed properly. Also, when reinstalling the logic board/drive 

assembly, verify that the guide pins on each side of the assembly slide behind
the plastic rails in the computer case as you lower the assembly into the case. 

FireWire adapter card

press here

screw

screw

screw

FireWire adapter card

Video connector

adapter card

power cable

4-pin

connector

logic board/drive

assembly

crimp 

connector

wire

clamp

Figure 35

screw

screw

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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