Procedure 2
Printer Port LED Check
in
Boot Mode
The printer port LED displays the
IR
T status and test status by turning lights
on
and
off
as an
eight-digit binary value for boot mode. Figure 2-2
shows the printer port LED.
NOTE:
When
performing this
check,
the
external FDDIPRT option in
the
SETUP
program must be set
to
PRT
and
the
computer
set
to
boot
mode.
Figure
2-2 Printer Port LED
To
use the printer port LED, follow these steps:
1.
Turn
on
the T1900ff190OC's power, then set it
to
boot mode.
2.
Tum
off
the computer.
3. Plug the printer port
LED
into the computer's PRTIFDD connector.
4. Hold down
the
space bar and
tum
on
the
T1900ff1900C's
power.
5.
Read the
LED
status from left
to
right as you are facing the back
of
the computer.
6. Convert
the
status from binary
to
hexadecimal notation.
7.
If
the
final
LED
status is FFh (normal status),
go
to
Procedure 3.
8.
If
the
final
LED
status matches any
of
the test status values in Table 2-2,
go
to
Check I.
NOTE:
If
an
e"or
condition is detected by
the
IRT
test,
the
printer port LED
dis-
plays
an
e"or
code
after
the
IRT test
ends.
For
example,
when
the
printer port
LED
displays 22 and
halts,
the
IRT test has already completed
the
KBe
test.
In
this
instance,
the
IRT indicates an
e"or
has
been
detected during
the
system memory
test.
2-11
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