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updated2026-10-04 23:30

 
Apple Lisa XLerator 12.5/18 Installation
DeviceApple Lisa
DifficultyModerate
Time20 minutes
Steps6
This guide is by LisaGuide on iFixit and is licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0. ByteRot mirrors it for non-commercial preservation: formatting changed and photos resized for old browsers; full-size photos and the text are on the FTP in /DOCS/REPAIR. Original guide >>

Tools: Philips head screwdriver; Flat Head Screwdriver

Parts: XLerator 12.5/18


Step 1 :: Disassembly
[step 1 photo] [step 1 photo]
• Follow the Apple Lisa Disassembly Guide (https://www.ifixit.com/Guide/Apple+Lisa+Disassembly/117991) to remove the Lisa's real panel.
• Remove the Lisa's Card Cage.

Step 2 :: Remove the CPU Board
[step 2 photo] [step 2 photo]
• Remove the CPU Board. It is marked in blue.
• Lift up on the CPU Board's clips.
• Lift up the CPU Board to remove.

Step 3 :: Remove CPU Chip
[step 3 photo]
• Locate the CPU at location 13A/B/C (the big one.)
• Remove the CPU. I used a flat head screwdriver to gently pry up the chip although there are better tools such as a Chip Remover.

Step 4 :: Insert the XLerator
[step 4 photo]
• Insert the XLerator in the CPU's socket.
• Ensure it "click" in all the way.
• If the XLerator seems loose then use electrical tape at your discretion to secure it to the CPU Board.

Step 5 :: Reassembly
[step 5 photo] [step 5 photo]
• Reinstall the CPU Board into the Lisa's Card Cage.
• Reinstall the Lisa's Card Cage into the Lisa.
• Reinstall the Lisa's rear panel.

Step 6 :: Installing the Software
[step 6 photo] [step 6 photo] [step 6 photo]
• XLerator software can be found on the MacWorks + II (MW+II) Installation floppy (http://macintoshgarden.org/apps/macworks-plus-ii).

Conclusion
To reassemble your device, follow these instructions in reverse order.

Credit
This guide is by LisaGuide on iFixit and is licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0. ByteRot mirrors it for non-commercial preservation: formatting changed and photos resized for old browsers; full-size photos and the text are on the FTP in /DOCS/REPAIR. Original guide >>
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