IBM Thinkpad X30 X31 Manual

FRU replacement notices
This section contains notices related to removing and
replacing parts. Read this section carefully before replacing
any FRU.
Screw notices
Loose screws can cause a reliability problem. In IBM
ThinkPad computer, this problem is addressed with special
nylon-coated screws that have the following characteristics:
vThey maintain tight connections.
vThey do not easily come loose, even with shock or
vibration.
vThey are harder to tighten.
vThey should be used only once.
Do the following...

vMake sure you use the correct screw. If you have a
torque screwdriver, tighten all screws firmly to the torque
shown in the table.Never use a screw that you
removed. Use a new one. Make sure the screws are
tightened firmly.
Retaining serial numbers
This section includes the following descriptions:
v“Restoring the serial number of the system unit”
v“Retaining the UUID”
Restoring the serial number of the system
unit
When the computer was manufactured, the EEPROM on
the system board was loaded with the...

and stored in the EEPROM of your system board. The
algorithm that generates the number is designed to provide
unique IDs until the year A.D. 3400. No two computers in
the world have the same number.
When you replace the system board, you must set the
UUID on the new system board as follows:
1. Install the ThinkPad Hardware Maintenance Diskette
Version 1.69, and restart the computer.
2. From the main menu, select4. Assign UUID.
A new UUID is created and written. If a valid UUID
already exists, it is not...

Removing and replacing a FRU
This section presents directions and drawings for use in
removing and replacing a FRU. Be sure to observe the
following general rules:
1. Do not try to service any computer unless you have
been trained and certified. An untrained person runs
the risk of damaging parts.
2. Before replacing any FRU, review“FRU replacement
notices”on page 67.
3. Begin by removing any FRUs that have to be removed
before the failing FRU. Any such FRUs are listed at the
top of the page. Remove them...

1010 Battery pack
DANGER
21
Use only the battery specified in the parts list for
your computer. The use of an incorrect battery can
result in ignition or explosion of the battery.
Removing and replacing a FRU
ThinkPad X30, X3171 

1020 Hard-disk drive
Attention
vDo not drop or apply any shock to the
hard-disk drive.The hard-disk drive is sensitive
to physical shock. Incorrect handling can cause
damage and permanent loss of data.
vBefore removing the drive, have the user make a
backup copy of all the information on the drive if
possible.
vNever remove the drive while the system is
operating or is in suspend mode.
For access, remove following FRU:
v“1010 Battery pack”on page 71
1
Note:The hard disk is attached to the cover.
Step...

2
3
3
4
When installing:Make sure that the hard disk is
connected firmly.
Removing and replacing a FRU
ThinkPad X30, X3173 

1030 DIMM cover
For access, remove following FRU:
v“1010 Battery pack”on page 71
Note:Loosen the screws
1, but do not remove them.
For X30 series
2
1
1
For X31 series
2
1
1
Removing and replacing a FRU
74ThinkPad X30, X31 (MT 2672/2673) 

1040 DIMM
For access, remove following FRUs, in order:
v“1010 Battery pack”on page 71
v“1030 DIMM cover”on page 74
1
12
When installing:With the notched end of the DIMM
toward the socket, insert the DIMM into
the socket, and then press it firmly. Pivot
the DIMM until it snaps into place. Make
sure that the card is firmly fixed in the
slot and does not move easily.
Removing and replacing a FRU
ThinkPad X30, X3175 

1050 Backup battery
DANGER
For access, remove following FRUs, in order:
v“1010 Battery pack”on page 71
v“1020 Hard-disk drive”on page 72
v“1030 DIMM cover”on page 74
2
1
When installing:Make sure that the battery connector

4is attached firmly. Use only the battery specified in the parts list for
your computer. The use of an incorrect battery can
result in ignition or explosion of the battery.
Removing and replacing a FRU
76ThinkPad X30, X31 (MT 2672/2673)