2.3PRELIMINARY STEPS TO PROBLEM ISOLATION
If you encounter an error condition, complete the following steps before starting the problem isolation procedures.
1.Turn off power to the system unit.
2.Disconnect any peripheral devices other than the keyboard and monitor. Do not disconnect the printer if you want to test the printer or use it to log error messages.
3.Install all appropriate loopback plugs and terminating plugs for complete testing.
4.Insert the ADVANCED DIAGNOSTICS diskette into Drive A.
5.Turn on the system unit.
See Chapter 4, ADVANCED DIAGNOSTICS PROGRAM, for descriptions of the diagnostics tests.
2.4PROBLEM ISOLATION FLOWCHART
The problem isolation flowchart provides a quick reference for identifying and correcting possible error conditions that may occur during POST. It gives troubleshooting procedures for identifying malfunctions and replacing major subassemblies in the computer and directs you to Chapter 4, ADVANCED DIAGNOSTICS PROGRAM, and to Chapter 5, ERROR MESSAGES AND CODES, for
