Lenovo 6072BVU User Manual - Page 84

Undetermined, problems

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Message/Symptom FRU/Action Non-system disk or disk error-type message with a known-good diagnostic diskette. 1. Diskette Drive 2. System Board 3. Diskette Drive Cable 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 1. Power switch/LED assembly light not on, but computer works correctly 2. System Board Printer problems 1. Printer 2. System Board Program loads from the hard disk with a known-good diagnostics diskette in the first 3.5-inch diskette drive 1. Run Setup and check Startup sequence. 2. Diskette Drive 3. Diskette Drive Cable 4. System Board 5. AC/DC power adapter PXE computer cannot access programs from Replace the hard disk drive its own hard disk. PXE computer does not PXE from server 1. Check startup sequence 2. Check the network adapter LED status Some or all keys on the keyboard do not work 1. Keyboard 2. Keyboard Cable 3. System Board Undetermined problems 1. Turn off the computer. 2. Remove or disconnect the following components (if installed) one at a time. a. External devices (modem, printer, or mouse) b. Any adapters c. Memory modules d. Extended video memory e. External Cache f. External Cache RAM g. Hard disk drive h. Diskette drive 3. Turn on the power to re-test the system. 4. Repeat steps 1 through 3 until you find the failing device or adapter. If all devices and adapters have been removed, and the problem continues, replace the system board. 78 Hardware Maintenance Manual

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Message/Symptom
FRU/Action
Non-system
disk
or
disk
error-type
message
with
a
known-good
diagnostic
diskette.
1.
Diskette
Drive
2.
System
Board
3.
Diskette
Drive
Cable
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
switch/LED
assembly
2.
System
Board
Printer
problems
1.
Printer
2.
System
Board
Program
loads
from
the
hard
disk
with
a
known-good
diagnostics
diskette
in
the
first
3.5-inch
diskette
drive
1.
Run
Setup
and
check
Startup
sequence.
2.
Diskette
Drive
3.
Diskette
Drive
Cable
4.
System
Board
5.
AC/DC
power
adapter
PXE
computer
cannot
access
programs
from
its
own
hard
disk.
Replace
the
hard
disk
drive
PXE
computer
does
not
PXE
from
server
1.
Check
startup
sequence
2.
Check
the
network
adapter
LED
status
Some
or
all
keys
on
the
keyboard
do
not
work
1.
Keyboard
2.
Keyboard
Cable
3.
System
Board
Undetermined
problems
1.
Turn
off
the
computer.
2.
Remove
or
disconnect
the
following
components
(if
installed)
one
at
a
time.
a.
External
devices
(modem,
printer,
or
mouse)
b.
Any
adapters
c.
Memory
modules
d.
Extended
video
memory
e.
External
Cache
f.
External
Cache
RAM
g.
Hard
disk
drive
h.
Diskette
drive
3.
Turn
on
the
power
to
re-test
the
system.
4.
Repeat
steps
1
through
3
until
you
find
the
failing
device
or
adapter.
If
all
devices
and
adapters
have
been
removed,
and
the
problem
continues,
replace
the
system
board.
78
Hardware
Maintenance
Manual