Take Apart

Logic Board - 86

 

Desktop model, this jumper must cover the pins marked

 

 

“Mac”. Failure to install this jumper correctly will result

 

in a computer that will not boot up.

 

Note: Replacement logic boards come with the J28 jumper

 

pre-installed in the PM G3 Desktop configuration; that is,

 

the jumper comes installed on the “Mac” pins. If you are

 

installing the logic board in a Power Mac G3 Minitower or

 

Server G3 unit, you must move the J28 jumper to cover the

 

“PS” pins. When replacing the logic board, be sure to check

 

the power supply jumper setting.

 

IMPORTANT: If you are replacing the logic board, you must

 

transfer the processor module and processor jumper (at

 

J16) from the original logic board to the replacement board.

 

See the take-apart instructions for the “Processor Module”

 

for more information. You must also cover the processor

 

jumper with a new warranty sticker, which comes with the

Page 182
Image 182
Apple G3 manual

G3 specifications

The Apple G3, introduced in 1997, marked a significant leap in Apple's computer technology and design philosophy. This series of Macintosh computers was powered by the PowerPC G3 processor, which had a clock speed ranging from 233 MHz to 750 MHz, depending on the model. The G3 chip was notable for its advanced features, including a 32 KB L1 cache and the ability to support a more complex 256 KB L2 cache. This allowed the machines to execute instructions more efficiently than their predecessors, enhancing overall performance for various computing tasks.

One of the defining characteristics of the Apple G3 line was its innovative design, which combined form and function. The desktop models featured a sleek, curving case, famously known as the "Blue and White" G3, while the all-in-one iMac G3 showcased vibrant colors and an iconic translucent design that became a hallmark of Apple devices.

The Apple G3 was notable for its extensive use of USB ports, which was a relatively new technology at the time. This foresight helped pave the way for the adoption of USB peripherals, allowing users to connect a wide range of devices, from printers to scanners, with ease. Additionally, the G3 series also provided options for expansion via PCI slots, giving users the flexibility to upgrade their systems.

In terms of graphics, the G3 models were equipped with accelerators like the ATI Rage or the NVIDIA Riva TNT, providing improved visual performance for both professional applications and gaming. This was complemented by Apple's decision to support higher screen resolutions and better color depth, enhancing the multimedia experience.

Moreover, the Apple G3 introduced the Mac OS 8 operating system, which brought improved multitasking capabilities and a more streamlined user interface. This allowed users to experience a more intuitive and productive computing environment.

Overall, the Apple G3 line represented a critical evolution in Macintosh technology. It combined powerful processing, innovative design, and new technologies that set the stage for future developments in the Apple ecosystem. The G3 series not only solidified Appleā€™s presence in the computing market but also laid the foundation for the modern computing experience that would follow in the ensuing years.