Apple Performa 6400/180 - Manual (Page 77)

Troubleshooting Symptom Charts/System - 3
System
System does not start
up
1 Reset logic board. Refer to Additional Procedures.
2 Replace power supply.
3 Replace logic board. Retain customer’s DIMMs.
System does not start
up from keyboard,
but starts up from
power switch
1 Check keyboard connection.
2 Verify keyboard as known-good.
Menu bar constantly
flashes or system
constantly beeps
Verify that front-panel control buttons are not jammed.