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5. Using the Dip Switches only (no jumpers are required for the setting of your ZIF), set your BUS speed and CPU Multiplier according to the chart on page 72 of the XLR8 users manual. Do not exceed your Mac's maximum BUS speed when setting the carrier card. Example: Open your XLR8 manual to page 72. If you have a 350mhz ZIF (XGZM350) to install into a Power Macintosh 7300/200, which has a max BUS speed of 50mhz, find 50mhz on the left column of the chart. Next to the speed you see "1,2,4,6,7,8" these are the dip switches to be set to the ON position to set your BUS to the proper 50mhz for the carrier card. Follow that 50mhz row over to your processor speed of 350mhz, then follow that column up to the top to find your CPU multiplier setting. You will find a CPU multiplier of 7 with "9,11,12" directly underneath. Change these dip switches to the ON position to set your CPU multiplier speed on your carrier card. (NOTE #1: Part Number XGZM300 "fixed" must have a multiplier setting of 6.5 to function properly.) (NOTE# 2: The photo shown does not match the settings described above)
NOTE: SOME ZIFS COME WITH A DONUT ALREADY INSTALLED. ONLY INSTALL ONE DONUT OR THE ZIF WILL NOT BE IN CONTACT WITH THE HEATSINK.
**NOTE: There should be NO RESISTANCE when inserting the ZIF. If you feel resistance, remove the ZIF, align it properly, and try again.**
10. After disconnecting your Mac from power, prepare your Mac for installation. Remove any L2 cache card from L2 cache expansion slot. If your memory is interleaved, rearrange it so it is not interleaved if possible. Failing to do either of these steps can cause your new ZIF to run unstable or not at all. 11. Remove original daughter board and insert assembled ZIF/Carrier into place. Double check that everything inside your Mac is seated properly. Close your case and reconnect your Mac to power. 12. Start your MAC and immediately reset the PRAM three times. To reset the PRAM three times: Hold down the command-option-P and R keys simultaneously, and continue to hold them down until you here the start-up chime three times with a short delay between each chime. Once you have heard the third chime, release the keys and allow your Mac to start up as normal. *Perform this entire step only once. (NOTE: Your volume and mouse-speed settings will reset to their default level as a result of this action.) 13. Once your new G3 PowerMac has started, open your XLR8 control panel (if it did not come up automatically), choose the "advanced" tab, and ensure that the cache speed setting is set to the default speed chosen by the XLR8 software. (NOTE: Choosing the accelerated cache speed offered by the software will result in a 3% - 6% speed increase but may cause overall system instability.) 14. Enjoy your new G3 PowerMac! Entire contents copyright ® Other World Computing 1999. |