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K Service Source Power Macintosh G3/Macintosh Server G3 (Blue and White) Power Macintosh G3 (Blue and White), Macintosh Server G3 (Blue and White), Macintosh Server G3 with Mac OS X Server K Service Source Hot Issues Power Macintosh G3/Macintosh Server G3 (Blue and White) 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/Macintosh Server G3 (Blue and White) computer. Note: To avoid confusion with other products called "G3," Service Source and Price Pages documentation added the words "Blue and White" after the product name. This chapter alerts you to important issues and provides pointers to other areas in the manual where more complete information can be found. To familiarize yourself with a new product family, always read the Basics chapter in its entirety. You should also refer to the Troubleshooting chapter for basic theory of operations information. Hot Issues Processor Module vs. Card - 2 Processor Module vs. Card Whereas previous Power Macintosh computers featured a user-installable processor card, this logic board uses a processor module that must not be removed by the customer (see "Processor Module" in the Take Apart chapter). Processor Module Jumper The Power Macintosh G3/Macintosh Server G3 logic board has a processor module jumper installed at J25. The processor jumper is color coded for the speed of processor module used (yellow jumper for 450 MHz, white jumper for 400 MHz, blue jumper for 350 MHz, and black jumper for 300 MHz). Failure to install the correct jumper may result in a computer that won't boot up. (See "Jumper Location") in the Troubleshooting chapter. Hot Issues Warranty Sticker - 3 Warranty Sticker There is a warranty sticker that covers the processor module jumper. The customer's warranty is void if this sticker is tampered with. Apple-authorized service providers must replace this sticker if they have removed it during servicing to protect the customer's warranty. (See "Processor Module" in the Take Apart chapter.) Power Supply Voltage Setting There is a switch on the back of the power supply that controls the voltage setting. The voltage switch must be set correctly to avoid da