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Troubleshooting General/ Logic Board Troubleshooting - 14
Power Macintosh G4 (PCI Graphics)
Processor Module
The logic board comes with a removable processor module. The
processor should rarely fail and should be replaced only as a last
resort. Processor modules can be ordered from Service.
Note that when you replace the logic board on a Power Macintosh
G4 (PCI Graphics), you must also change the processor jumper
block and warranty sticker to be compatible with the processor
module. Failure to install the jumper block properly will result
in a unit that does not boot up. No jumper block is required for
Power Mac G4 (AGP Graphics/Gigabit Ethernet/Digital Audio)
processors.
Refer to “Processor Module” in the Take Apart chapter for more
information.