Specifications

Troubleshooting Symptom Charts/Miscellaneous (Continued) - 17
Miscellaneous
(Continued)
Screen shows “Sad
Macintosh” icon and
black vertical lines;
screeching sound
1 Replace RAM SIMMs on logic board.
2 Replace logic board. Retain customer’s SIMMs.
Headphone jack does
not operate correctly
1 Verify that headphone jack is seated properly.
2 Replace chassis harness assembly.
Speaker jacks do not
operate
1 Verify that speaker jacks are seated properly.
2 Replace logic board.
System automatically
restarts after
shutdown
Check whether test jumper is installed on analog board (location:
BD 11). If it is installed, remove it.