Apple performa 400 series Service Manual

 

 Upgrades

Macintosh Processor Upgrade - 9

 

   The alignment corner 

of the 68LC040 processor is 

missing one pin.  The 

alignment corner of the 

spacer is missing a pin hole.
1 Position the spacer 

alignment corner over 

the 68LC040 processor 

alignment corner

2 Place the spacer on the 

processor.

Spacer

68LC040 Processor

Alignment Corners