Editing Macintosh IIcx (section)

== Known Issues & Solutions ==

=== Critical Issues ===
* '''No boot without PRAM battery''' – IIcx will not start with dead/missing battery
* '''Dirty ROMs''' – Require Mode32 for >8 MB RAM access
* '''Soldered CPU''' – Most IIcx boards have non-upgradeable 68030
* '''No built-in video''' – Requires NuBus video card purchase

=== Common Problems ===
* Electrolytic capacitor leakage on logic board
* Power supply capacitor failure
* PRAM battery corrosion damage
* NuBus slot contact oxidation
* Fan bearing failure causing noise

=== Upgrade Limitations ===
* CPU soldered to logic board (unlike II/IIx)
* No Level 2 cache support on many boards
* Maximum 16 MB SIMMs (128 MB ceiling)
* Three NuBus slots may be insufficient