Procedure 3 Printer Port LED Check
in
Resume Mode
The printer port LED displays the IRT status and test status by turning lights on and
off
as an
eight-digit binary value for resume mode.
NOTE:
When
performing this
check,
the
external FDDIPRT option in
the
SETUP
program must
be
set
to
PRT
and
the
computer set
to
resume
mode.
To use the printer port LED, follow these steps:
1.
Tum
on the T1900rr1900C's power, then set it to resume mode.
2.
Tum
off
the computer.
3. Plug the printer port LED into the computer's
PRTIFDD connector.
4.
Tum
on
the computer.
5.
Read the LED status from left
to
right as you face 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
4.
8.
If
the
final
LED status matches any
of
the test status values listed in Table 2-3, go
to
Procedure
5.
Table
2-3 Printer Port LED Resume
Mode
Error Status
Error
Status
Meaning
of
Status
OOH
RAM
BIOS
error
FOH
Press
the
reset
switch.
F1H
Suspend
process
error
(The
system
will
suspend
while
FDD
is
accessed,
etc.)
F2H
The
system
has
optional
ROM,
or
an
optional
card
(CGA,
MDA).
F4H
Backup
RAM
checksum
error
F5H
Main
memory
checksum
error
F6H
Video
RAM
checksum
error
F7H
Extended
memory
checksum
error
F8H
Backup
RAM
checksum
error
F9H
Main
memory
checksum
error
FAH
Video
RAM
checksum
error
FBH
Extended
memory
checksum
error
FDH
Card
modem
error
(The
card
modem
will
be
removed
while
the
system
is
in
resume,
etc.)
FEH
Password
error
(The
password
will
be
erased
before
it
is
suspended.)
2-14
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