Lenovo ThinkPad T61 Hardware Maintenance Manual - Page 44

Symptom-to-FRU, index, Numeric, error, codes - post

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v If the timer conditions are satisfied in suspend mode. v If you are using the APM operating system and have set the mode to Hibernate when battery becomes low, and the battery charge becomes critically low. When the power is turned on, the computer returns from hibernation mode and resumes operation. The hibernation file in the boot record on the hard disk drive is read, and system status is restored from the hard disk drive. Symptom-to-FRU index This section contains following information: v "Numeric error codes" v "Error messages" on page 41 v "Beep symptoms" on page 42 v "No-beep symptoms" on page 42 v "LCD-related symptoms" on page 43 v "Intermittent problems" on page 43 v "Undetermined problems" on page 44 The symptom-to-FRU index in this section lists symptoms and errors and their possible causes. The most likely cause is listed first, in boldface type. Note: Do the FRU replacement or other actions in the sequence shown in the column headed "FRU or action, in sequence." If replacing a FRU does not solve the problem, put the original part back in the computer. Do not replace a nondefective FRU. This index can also help you determine, during regular servicing, what FRUs are likely to need to be replaced next. A numeric error is displayed for each error detected in POST or system operation. In the displays, n can be any number. If no numeric code is displayed, check the narrative descriptions of symptoms. If the symptom is not described there, go to "Intermittent problems" on page 43. Note: For a device not supported by diagnostic codes in the ThinkPad computers, see the manual for that device. Numeric error codes Table 1. Numeric error codes Symptom or error 0175 Bad CRC1, stop POST task-The EEPROM checksum is not correct. 0176 System Security-The system has been tampered with. FRU or action, in sequence System board. 1. Run BIOS Setup Utility, and save the current setting by pressing F10. 2. System board. 36 ThinkPad T61, R61, and R61i (14.1-inch widescreen) Hardware Maintenance Manual

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v
If
the
timer
conditions
are
satisfied
in
suspend
mode.
v
If
you
are
using
the
APM
operating
system
and
have
set
the
mode
to
Hibernate
when
battery
becomes
low
,
and
the
battery
charge
becomes
critically
low.
When
the
power
is
turned
on,
the
computer
returns
from
hibernation
mode
and
resumes
operation.
The
hibernation
file
in
the
boot
record
on
the
hard
disk
drive
is
read,
and
system
status
is
restored
from
the
hard
disk
drive.
Symptom-to-FRU
index
This
section
contains
following
information:
v
“Numeric
error
codes”
v
“Error
messages”
on
page
41
v
“Beep
symptoms”
on
page
42
v
“No-beep
symptoms”
on
page
42
v
“LCD-related
symptoms”
on
page
43
v
“Intermittent
problems”
on
page
43
v
“Undetermined
problems”
on
page
44
The
symptom-to-FRU
index
in
this
section
lists
symptoms
and
errors
and
their
possible
causes.
The
most
likely
cause
is
listed
first,
in
boldface
type.
Note:
Do
the
FRU
replacement
or
other
actions
in
the
sequence
shown
in
the
column
headed
“FRU
or
action,
in
sequence.”
If
replacing
a
FRU
does
not
solve
the
problem,
put
the
original
part
back
in
the
computer.
Do
not
replace
a
nondefective
FRU.
This
index
can
also
help
you
determine,
during
regular
servicing,
what
FRUs
are
likely
to
need
to
be
replaced
next.
A
numeric
error
is
displayed
for
each
error
detected
in
POST
or
system
operation.
In
the
displays,
n
can
be
any
number.
If
no
numeric
code
is
displayed,
check
the
narrative
descriptions
of
symptoms.
If
the
symptom
is
not
described
there,
go
to
“Intermittent
problems”
on
page
43.
Numeric
error
codes
Table
1.
Numeric
error
codes
Symptom
or
error
FRU
or
action,
in
sequence
0175
Bad
CRC1,
stop
POST
task—The
EEPROM
checksum
is
not
correct.
System
board.
0176
System
Security—The
system
has
been
tampered
with.
1.
Run
BIOS
Setup
Utility,
and
save
the
current
setting
by
pressing
F10.
2.
System
board.
Note:
For
a
device
not
supported
by
diagnostic
codes
in
the
ThinkPad
computers,
see
the
manual
for
that
device.
36
ThinkPad
T61,
R61,
and
R61i
(14.1-inch
widescreen)
Hardware
Maintenance
Manual