IBM 6862 User Guide - Page 143
Beep Code, Probable Cause, Time-of-day clock test failure
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Beep Code 2-3-3 3-1-1 3-1-2 3-1-4 3-2-4 3-3-1 Probable Cause Screen retrace tests in progress or failure Timer tick interrupt test failure Interval timer channel 2 test failure Time-of-day clock test failure Comparing CMOS memory size against actual Memory size mismatch occurred Chapter 7. Solving problems 125
Beep Code
Probable Cause
2–3–3
Screen retrace tests in progress or failure
3–1–1
Timer tick interrupt test failure
3–1–2
Interval timer channel 2 test failure
3–1–4
Time-of-day clock test failure
3–2–4
Comparing CMOS memory size against actual
3–3–1
Memory size mismatch occurred
Chapter 7.
Solving problems
125