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″Insert
a
Diskette″
icon
appears
with
a
known-good
diagnostics
diskette
in
the
first
3.5-inch
diskette
drive.
1.
System
Board
2.
Diskette
Drive
Cable
3.
Riser
card
4.
Network
Adapter
Intensity
or
color
varies
from
left
to
right
of
characters
and
color
bars
1.
Display
2.
System
Board
No
power
or
fan
not
running
1.
See
“Power
Supply
Errors”
on
page
87.
Non-system
disk
or
disk
error-type
message
with
a
known-good
diagnostic
diskette.
1.
Diskette
Drive
2.
System
Board
3.
Diskette
Drive
Cable
4.
Riser
card
Other
display
symptoms
not
listed
above
(including
blank
or
illegible
display)
1.
Display
2.
System
Board
Power-on
indicator
or
hard
disk
drive
in-use
light
not
on,
but
computer
works
correctly
1.
Power
Supply
2.
System
Board
3.
LED
Cables
Printer
problems
1.
Printer
Program
loads
from
the
hard
disk
with
a
known-good
diagnostics
diskette
in
the
first
3.5-inch
diskette
drive
1.
Run
Setup
2.
Diskette
Drive
3.
Diskette
Drive
Cable
4.
System
Board
5.
Riser
card
6.
Power
Supply
RPL
computer
cannot
access
programs
from
its
own
hard
disk.
1.
If
network
administrator
is
using
LCCM
Hybrid
RPL,
check
startup
sequence:
a.
First
device
-
network
b.
Second
device
-
hard
disk
2.
Hard
disk
drive
RPL
computer
does
not
RPL
from
server
1.
Check
startup
sequence
2.
Check
the
network
adapter
LED
status
Serial
or
parallel
port
device
failure
(system
board
port)
1.
External
Device
Self-Test
OK?
2.
External
Device
3.
Cable
4.
System
Board
Serial
or
parallel
port
device
failure
(adapter
port)
1.
External
Device
Self-Test
OK?
2.
External
Device
3.
Cable
4.
Alternate
Adapter
5.
System
Board
126
Hardware
Maintenance
Manual