Chapter 5. Locating Problems With Your 3270 Pc Units - IBM 3270 Hardware User's Manual

Chapter 5. Locating Problems
with Your 3270 PC Units
This chapter tells you what to do if:
• The POST fails to run correctly, or
• If you have been directed here from your
Control Program book.
Since symptoms that appear on one unit may be
caused by problems with another unit, you
should always begin these instructions with
"Step
1.
Check Your Cable and Power Cord
Connections" on page 5-3, and follow them step
by step. They will help you locate the unit that
has the problem so you can report the problem it
accurately and obtain service promptly.
If you are told, in this chapter, to have a unit
serviced, follow your company's procedures to
report the problem or to have the unit fixed.
Chapter 5. Locating Problems with Your PC Units 5-1