Apple M4753 Laptop User Manual


 
Troubleshooting Symptom Charts/Miscellaneous - 37
Intermittent
operating problems
such as no booting or
initialization errors
1 Verify that microprocessor board is properly installed.
2 Press on microprocessor board a second time to make sure
the board is fully seated.
Caution:
The microprocessor board can be partially inserted
and the computer will still function. However, over time, heat
will cause an partially seated microprocessor board to lose
contact and cause intermittent system problems. The connection
of these boards is checked and double-checked at the factory.