crescendo 7200 G3 Manuale di avvio rapido - Pagina 4

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Hardware Installation—Power Mac 7200, 7215, WGS 7250

(continued)

8. If your computer's expansion card cover does not resemble the one shown in

Figure 8, go to the next step. If your expansion card cover has three notched

baffles as shown in Figure 8, you must break off the two rear baffles so they

will not touch the Crescendo/7200 card when the cover is closed. Use a pair

of pliers to break off the tabs.

Support Note:

When you remove the Crescendo/7200 card from its anti-static

package, you may notice that a DIMM ejector appears to be missing; do not be

concerned. The top right DIMM ejector has been removed to enable easier installation into

all Power Macintosh 7200/8200 models.

9. Remove the Crescendo/7200 from the anti-static package, making sure to

handle the card by its edges, and lay the card on a flat, static-free surface

(Figure 9).

Support Note:

Do not touch the DIMMs' connectors; always handle DIMMs

only by their edges. Please note that DIMMs are designed to fit into the slot only

one way; be sure to align the DIMMs' notches with the small guides inside the slot.

10. If you going to install, remove, or swap memory on the logic board, do so

now. Using the information obtained from Apple System Profiler, determine

which DIMMs you will remove or swap from, or install into the logic board's

DIMM slots (Figure 10), which are labeled J14 - J17. To remove the DIMMS,

push outward and down on the DIMM ejectors. To install DIMMs, align the

notches of a DIMM over the guides of a DIMM slot, then gently, but firmly

press the DIMM straight into the slot until the ejectors snap completely

closed.

Support Note:

Remember, you must leave at least 8MB of memory installed

on the system's logic board, and install a minimum of 8MB of memory on the

Crescendo/7200 if you are using System 7.5.3 to Mac OS 8.6. For Mac OS 9 and OS 9.1,

you must leave at least 8MB of memory installed on the system's logic board, and install a

minimum of 24MB of memory on the Crescendo/7200.

11. Orient the Crescendo card so the DIMM slots are face up and the bracket is

on the right (Figure 11). Add some support, such as a piece of cardboard,

under the upper left corner of the Crescendo card to keep it level. Align the

notches of a DIMM over the guides of the bottom DIMM slot on the

Crescendo card. Gently, but firmly press the DIMM straight into the slot

until the ejectors snap completely closed. Repeat as necessary with any

remaining DIMMs.

Support Note:

You may install the Crescendo in any of the three PCI slots, but

because of the amount of space occupied by the card with DIMMs installed, we

recommend installing it into the slot labeled A1. If you install it into either slot A2 or A3, you

will not be able to utilize all three PCI slots in your system.

12. Locate the PCI slot labeled A1 and remove its port access cover (Figure 12).

expansion

card cover

Crescendo/7200

processor card

Crescendo/7200

processor card

notched baffle

-break off-

notched baffle

-break off-

notched baffle

Figure 8

anti-static package

Figure 9

DIMM

ejector

Figure 10

DIMM

support

bracket

Figure 11

port access cover

PCI slot A1

Figure 12