IBM 3745 Maintenance Information Reference page 301

Manual Tests
PT2/3
REM DSU/CSU FAILED
REM PWR LOSS
KEY n STUCK
aa Lle6 FAILED
DEFAULT CONFIG
INV PATTERN RCV
TEST FROM HOST
WRONG SLOT
MAND DDS LOOP
OPT DDS LOOP
TEST FAILED
SELF TEST FAILED
TEST OK
SELF TEST OK
TEST OK NOWRP
TEST OK WRAP
DEFAULT CONFIG
Stays on screen until the operator presses EXIT. This
message is not displayed if the PKD was not present
when the condition occurred.
In point-to-point, this message remains until CD goes on
or the operator presses EXIT. It appears as soon as the
PKD is present if CD is still
O.
When the indicated key appears to be pressed during
more than 5 s. The message stays 10 s then the operator
panel is reinitialized. This indicates a mechanical or
electrical problem.
At power ON, the initial self-test failed.
Operator intervention is required to reconfigure the
DSU/CSU.
Invalid pattern received (ex: a DDS pattern into LDM
mode)
A test from the 3745 has been initiated.
The cassette has been plugged in a wrong position.
A mandatory DDS loop from DDS has been initiated
(reversal polarity loop)
A optional DDS loop from DDS has been initiated (bipolar
code violation loop)
A manual self-test failed or a host self-test failed.
A self-test failed after a configuration change.
A self-test requested by the host is successful.
A self-test is successful after a configuration change.
A manual self-test without tel wrap plug is successful.
A manual self-test with tel wrap plug is successful.
Operation intervention is required to reconfigure the
CSU/CSU.
The following manual tests are all initiated from the PKD:
Loca I loop back
Local self test
Digital test (transmit/receive test)
1
Run continuously until 'EXIT' is pressed.
Data Disruptive
Descriptions of the above manual tests are given later in this chapter, under
'Problem Determination Aids' for LlC5s and LlC6s.
A 10-pin connector is available on the LlC6 panel to connect a PT2/3 used to
investigate and record control and data signals.
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IBM 3745 Maintenance Information Reference (MIR)