Hot Issues DVD-ROM Disk Damage - 9 the Take-Apart chapter.) DVD-ROM Disk Damage The Power Macintosh G3 Desktop offers DVD-ROM drives as a build-to-order option. This configuration provides user with the ability to add additional hard drives or removal media devices to their system. Hot Issues Master/Slave Support - 8 Master/Slave Support Some Power Macintosh G3 Desktop computers support adding two ATA/IDE devices to the same ATA/IDE channel, or what is commonly known as master and slave. (See “SGRAM Video Memory” in the Basics chapter. Never install the 256K or 512K video memory DIMMs used in older Macintosh computers. Use only SGRAM SO-DIMMs in these machines. Hot Issues SGRAM Video Memory - 7 SGRAM Video Memory Power Macintosh G3 computers use SGRAM video memory. (See “Logic Board” in the Take-Apart chapter for instructions on how to prepare the logic board for return to Apple Computer. You should not remove the ROM DIMM from the logic board. Hot Issues ROM DIMM - 6 ROM DIMM The Power Macintosh G3 Desktop logic board uses a ROM DIMM as opposed to soldered ROM. Hot Issues Voltage Regulator - 5 Voltage Regulator There is a removable voltage regulator on the logic board, which comes with the logic board and can also be ordered as a separate module. Service Providers must replace this sticker if they have removed it during servicing to protect the customer’s warranty. The customer’s warranty is void if this sticker is tampered with. Hot Issues Warranty Sticker - 4 Warranty Sticker There is a warranty sticker that covers the processor module jumper. Failure to install this jumper in the correct position may result in a computer that won’t boot up. The setting of this jumper differs between the Power Mac G3 Desktop and Minitower. Hot Issues Power Supply Jumper - 3 Power Supply Jumper The Power Macintosh G3 Desktop logic board has a power supply jumper, which is installed at J28. Hot Issues Shared Logic Board - 2 Shared Logic Board The Power Macintosh G3 Desktop and Minitower computers use the same logic board, but there are jumper settings that differ between them (see “Jumper Location J28” and “Jumper Location J16” in the Troubleshooting chapter).

This chapter alerts you to important issues and provides links to other areas in the manual where more complete information can be found. Hot Issues Introduction - 1 Introduction This chapter is designed to highlight unique or high- priority product issues that you should be aware of before servicing the Power Macintosh G3 Desktop computer. Service Source K Hot Issues Po wer Macintosh G3 Desktop. Service Source K Po wer Macintosh G3 Desktop.

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