IBM 4247 Maintenance Information page 196

Table 27. T&D Error Messages and Action (continued)
Error Message Description
Notes:
X Can be any number.
(*) This error message will display if a loop-back connector is not installed. Press
the Micro key twice to bypass this test. If a loop-back connector is installed,
perform the recommended action.
(**) This error can occur in any test that requires a mechanical operation (T&D 11,
12, 14, 15, 16, 17, or 18).
Action
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Chapter 2. Diagnostics