DEC DECstation 5000 Model 200 Maintenance Manual page 90

RAM board test error messages use the format
?TFL 7/mem/code: board (x: description).
The string ?TFL 7/mem indicates that the RAM board test
failed.
code is a number that indicates which part of the RAM
board test failed.
board indicates the memory module that reported the
problem. The number after board is the slot number of the
memory module that reported the error.
description represents additional information that describes
the failure.
5–12 Basic Hardware