Apple 5200/75 LC Personal Computer User Manual


 
REA Procedures Repair Overview for Freezing and Video Color Hue Issues - 2
Power Mac/Performa 52xx, 53xx
Perform these steps for Power Macintosh/Performa 52xx,
53xx computers exhibiting system freezes:
Note the unit’s external cable hookups.
Remove the I/O door.
Remove the logic board.
If the clock chip at U10 is not p/n 343S1191 or
343S1121, replace the logic board. (Ignore any letters
following the part number.)
If the Cache/ROM DIMM is laid out
exactly
as illustrated
and has
no
sticker on the middle vertical IC, replace the
DIMM.
If an Ethernet card is installed and the card fence doesn’t
hook onto the logic board fence, replace the card fence.
If you are not replacing the logic board, replace the EMI
clips.
Upgrade RAM for U.S. and Canadian Education customers.