ThinkPad S31
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ThinkPad s30, s31 Hardware
Maintenance Manual
Before using this information and the product it supports,
be sure to read the general information under “Read This
First” on page 1.
Second Edition (October 2001)
The following paragraph does not apply to the United
Kingdom or any country where such provisions are
inconsistent with local law:
INTERNATIONAL BUSINESS MACHINES CORPORATION
PROVIDES THIS PUBLICATION ″AS IS″ WITHOUT ANY
WARRANTY OF ANY KIND, EITHER EXPRESS OR
IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
LIMITED WARRANTIES OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE. Some states
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certain transactions; therefore, this statement may not
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This publication could include technical inaccuracies or
typographical errors. Changes are periodically made to the
information herein; these changes will be incorporated in
new editions of the publication. IBM may make
improvements or changes in the products or the programs
described in this publication at any time.
It is possible that this publication may contain references
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© Copyright International Business Machines
Corporation 2001. All rights reserved. NotetoUS
Government Users — Documentation related to restricted
rights — Use, duplication, or disclosure is subject to
restrictions set forth in GSA ADP Schedule Contract with
IBM Corp.
Contents
ThinkPad s30, s31 Hardware Maintenance Manual 1
Read This First .............1
What to Do First ...........2
How to Disable the Password .......3
Product Overview ............4
Fn Key Combinations ..........4
StatusIndicators...........5
Relatedserviceinformation.........7
Restoring the pre-installed software ......7
Creating the service partition for the s30 series . . 7
To create a recovery repair diskette ......8
To use the recovery repair diskette ......9
Checkout Guide.............9
Testing the computer ..........10
Audio Checkout ...........12
Fan ASM Checkout ..........12
Keyboard and Auxiliary Input Device Checkout 12
Memory Checkout...........13
1394/LAN or Wireless Board Checkout (s30 only) 13
Power System Checkout .........14
TrackPoint Checkout ..........16
Power Management Features .......16
Symptom-to-FRU Index ..........19
Numeric Error Codes ..........19
Error Messages ...........21
No Beep Symptoms ..........22
LCD-Related Symptoms .........22
Keyboard-Related Symptoms .......23
Indicator-Related Symptoms........23
Power-Related Symptoms ........23
PC Card (PCMCIA)-Related Symptoms ....23
CompactFlash Card-Related Symptoms ....23
Speaker-Related Symptoms ........24
Power Management-Related Symptoms ....24
Peripheral-Device-Related Symptom .....24
IntermittentProblems..........25
Undetermined Problems .........25
CE Utility Program Diskette .........27
Writing the Serialization Information .....27
Writing the UUID ...........27
Running the Diagnostics ..........27
FRU Removals and Replacements .......28
FRU Service Procedures.........28
1010 Battery ASM...........30
1020 Keyboard ASM ..........31
1030 Hard Disk Drive ASM ........32
1035 Hard Disk Drive FPC ASM ......35
1040 Suspend Board ASM ........36
1045 Suspend Board Cable ASM ......37
1050 Modem Card ASM .........38
iii
1055 Modem Cable ASM ........39
1060 Wireless Card ASM (s30 only) .....40
1065 IEEE 1394/LAN Card ASM ......41
1070 IEEE 1394/LAN Card Cable ASM ....42
1075 DIMM Card ASM .........43
1080 Upper Cover ASM .........44
1085 Speaker ASM ..........45
1090 Palm Rest ASM..........46
1100FanASM............47
1130 PCMCIA Slots ..........49
1140 System Board ..........51
1145 Power Board ASM .........52
1150 LCD Bezel ASM .........53
1155 LCD Rear Cover ASM ........54
1160LCDInverterASM.........55
1170LCDFPCASM..........56
1180 LCD Panel ASM .........58
1185HingeASM...........59
1190 Hinge ASM (Wireless—s30only).....61
1195 Base ASM ...........63
Computer Parts Listing ..........64
LCDUnitPartsListing..........67
ServiceTools.............68
Notices...............69
Trademarks .............69
iv ThinkPad s30, s31
ThinkPad s30, s31 Hardware Maintenance Manual
About This Manual
This manual contains service and reference information for
the IBM ThinkPad s30 and s31products. Use this manual
along with the diagnostics tests to troubleshoot problems
effectively.
The manual is divided into sections as follows:
v The introduction section provides general information,
guidelines, and safety information required to service
computers.
v The product-specific section includes service, reference,
and product-specific parts information.
This manual is intended for trained servicers who are
familiar with ThinkPad products. Use this manual along
with the PC-Doctor to troubleshoot problems effectively.
Read This First
Before you go to the checkout guide, be sure to read this
section.
Important Notes:
v Only certified trained personnel should service the
computer.
v Read the entire FRU service procedures before
replacing any FRUs.
v Use new nylon-coated screws when you replace
FRUs.
v Be extremely careful during write operations such
as copying, saving, or formatting. Drives in the
computer that you are servicing might have been
rearranged or the drive startup sequence might have
been altered. If you select an incorrect drive, data or
programs might be overwritten.
v Replace FRUs only for the correct model. When you
replace a FRU, make sure the model of the computer
and FRU part number are correct by referring to the
FRU parts list.
v A FRU should not be replaced because of a single,
unreproducible failure. Single failures can occur for a
variety of reasons that have nothing to do with a
hardware defect, such as: cosmic radiation, electrostatic
discharge, or software errors. FRU replacement should
be considered only when a recurring problem exists. If
1
this is suspected, clear the error log and run the test
again. Do not replace any FRUs if log errors do not
reappear.
Be careful not to replace a non-defective FRU.
What to Do First
The servicer must include the following in the parts
exchange form or parts return form that is attached to the
returned FRU:
1. Name and phone number of servicer
2. Date of service
3. Date when part failed
4. Date of purchase
5. Failure symptoms, error codes appearing on the
display, and beep symptoms
6. Procedure index and page number in which the failing
FRU was detected
7. Failing FRU name and part number
8. Computer type, model number and serial number
9. Customer’s name and address
Before checking problems with the computer, determine
whether or not the damage applies to the warranty by
referring to the following:
Note for Warranty: During the warranty period, the
customer may be responsible for repair costs if the
computer damage was caused by misuse, accident,
modification, unsuitable physical or operating environment,
or improper maintenance by the customer. The following
list provides some common items that are not covered
under warranty and some symptoms that may indicate that
the system was subjected to stresses beyond normal use:
The following is not covered under warranty:
v LCD panel cracked by applying excessive force or from
being dropped
v Scratched (cosmetic) parts
v Cracked or broken plastic parts, broken latches, broken
pins, or broken connectors caused by excessive force
v Damage caused by liquid spilled into the system
v Damage caused by the improper insertion of a PC Card
or the installation of an incompatible card
v Damaged or bent PC Card eject button
v Fuses blown by attachment of a non-supported device
v Forgotten computer password (making the computer
unusable)
2 ThinkPad s30, s31
v Sticky keys caused by spilling liquid onto the keyboard
The following symptoms might indicate damage caused by
non-warranted activities:
v Missing parts might be a symptom of unauthorized
service or modification.
v Hard disk drive spindles can become noisy from being
subjected to excessive force or from being dropped.
How to Disable the Password
There are three passwords used at a typical customer site:
the Supervisor Password, the hard disk drive password,
and the Power On password.
v Power On password:
1. Power off the computer.
2. Remove the battery pack and AC Adapter.
3. Remove the keyboard, see “1020 Keyboard ASM” on
page 31.
4. Short the jumper JP1. See the following figure:
JP1
5. Replace the keyboard.
6. Power on the computer and wait until POST ends.
7. Verify that the password prompt does not appear.
v Supervisor and hard disk drive passwords:
The Supervisor Password and hard disk drive password
are security features that are used to protect the system
and the hard disk drive data from unauthorized access.
No overriding capability is provided, so they cannot be
replaced if they are forgotten. If the customer forgets the
Supervisor Password, the system board must be
replaced. If the customer forgets the hard disk drive
password, the hard disk drive must be replaced.
ThinkPad s30, s31
3
Product Overview
The following shows an overview of the system features of
the ThinkPad s30 and s31 series.
Feature Description
Processor Intel Mobile Pentium III 600 MHz, 128
Bus architecture PCI Bus
Memory 128 MB SDRAM onboard
BIOS ROM up to 512 Kbytes
Video
Audio
Hard disk drive s30
I/O ports
Internal Ethernet/modem 56 Kbps (depends on the model)
PC card (PCMCIA) One Type II
Mini-PCI card Mini-PCI Type-IIIa
AC Adapter 56–Watt type
KB L2 cache
32 MB, 64 MB or 128 MB DIMM card
(max. 256 MB)
v 10.4–inch, 16M colors, 640x480 or
1024x768 pixel TFT color LCD
v 20–bit stereo D/A and 18–bit stereo
A/D audio
v Internal stereo speakers
v 10/20 GB, 2.5–inch, IDE interface
s31
v 15/30 GB, 2.5–inch, IDE interface
v External monitor (mini-plug)
v Headphone/line-out
v Microphone-in
v USB
v RJ-11
v RJ-45
CardBus support
Fn Key Combinations
The following table shows the Fn key and function key
combinations and their corresponding functions.
The Fn key works independently of the operating system.
The operating system obtains the status through the
system management interface to control the system.
Fn + Result
F3 LCD off
4 ThinkPad s30, s31
Fn + Result
F4 Suspend mode
F7 Switch between the LCD, the external monitor, and
F12 Hibernation mode
Insert Increases the volume
Delete Decreases the volume
Backspace Mutes the internal speaker
Home Increase brightness
End Decrease brightness
PgUp Toggle ThinkLight on/off
Spacebar
(s31 only)
both the LCD and external monitor.
Enables the FullScreen Magnifier
Note: Some models use the three volume control buttons
to adjust the volume. The volume control buttons
are located above the keyboard, next to the
ThinkPad button.
Status Indicators
The system status LED indicators show the current
computer status. The following shows the location of each
indicator symbol and the meaning of each indicator.
ThinkPad s30, s31 5
Symbol Color Meaning
(1) Battery status
(2) Suspend mode
(3) Drive in use
(4) Numeric lock
(5) Caps lock
(6) Scroll lock
(7) Power on
Green Enough battery power
Blinking
orange
Orange The battery pack is being
Blinking
green
Green The computer is in suspend
Blinking
green
Green Data is being read from or
Green The numeric keypad on the
Green Caps Lock mode is
Green Scroll Lock mode is
Green The computer is
remains for operation.
The battery pack needs to
be charged.
charged.
The battery pack is being
charged and is almost fully
charged.
mode.
The computer is entering
suspend mode.
written to the hard disk
drive. Do not enter
hibernation mode or power
off the computer when this
indicator is on.
keyboard is enabled. You
enable or disable the
keypad by pressing and
holding the Shift key, and
pressing the NumLk key.
For details, see the User’s
Reference.
enabled. All alphabetic
characters (A-Z) are
entered in capital letters
without the Shift key being
pressed. You enable or
disable the Caps Lock
mode by pressing the Caps
Lock key.
enabled. The Arrow keys
can be used as
screen-scroll function keys.
The cursor cannot be
moved with the Arrow
keys. Not all application
programs support this
function. You enable or
disable Scroll Lock mode by
pressing the ScrLk key.
operational. This indicator is
always on when the
computer is on or in
suspend mode.
6 ThinkPad s30, s31
Related service information
This section provides information about restoring the
pre-installed software.
Restoring the pre-installed software
To restore the pre-installed software for the s30 you can
use either the Product Recovery Program or a Recovery
CD.
To restore the pre-installed software for the s31 you can
only use the Product Recovery Program.
The Product Recovery Program is in a section of the hard
disk drive (the Service Partition) that is not displayed by
Windows Explorer. Use the Recovery CD if it was provided
with the computer.
Note: The recovery process might take up to 2 hours.
To use the Product Recovery program to restore the
pre-installed software, do the following:
1. Save all files and shut down the desktop.
2. Turn off the computer.
3. Turn on the computer. Quickly press F11 when this
message is displayed on the screen: ...″To start the
Product Recovery Program, press F11″...This message
is displayed for only a few seconds.
Note: If this message does not appear, you can use a
Recovery Repair diskette to get access to the
Product Recovery program. (see “To create a
recovery repair diskette” on page 8 for
instructions of making the Recovery Repair
diskette).
4. From the list displayed on the screen, select the
operating system you want to recover.
5. Select the recovery options you want, and follow the
instructions on the screen.
Creating the service partition for the s30 series
To create the Service Partition and install the preloaded
system from the Recovery CD, do the following;
To create the Service Partition (SP):
1. Erase all partitions on the hard-disk drive using
FDISK or a similar application.
2. Boot with the Recovery CD (and the boot diskette if
required).
ThinkPad s30, s31
7
3. A menu will appear stating ″Your computer originally
included a Product Recovery program...Reinstall the
Product Recovery Program? (Y/N)″.
Note: If the hard-disk drive contains any partitions,
you will not receive this menu-go to step 1.
4. Enter ″Y″ and the Service Partition will be created
and loaded with D2D files.
Note: If you do not want to create the Service
Partition, press ″N″, and then go to step 8.
5. Press Enter at the next window to continue.
The Service Partition is created. The system
automatically reboots during this process.
The recovery process copies some files to the Service
Partition and, PKUNZIPs others.
Follow the prompts-you may be prompted to change
CDs.
The system reboots when the process is complete.
Continue to step 6 to install the preloaded system.
Install the preloaded system from the CD.
6. Boot with the Recovery CD (and the boot diskette if
required).
7. If the hard disk drive is blank, a menu will appear
stating ″Your computer originally included a Product
Recovery program...Reinstall the Product Recovery
program? (Y/N)
To install the Service Partition, go to step 4.
To preload the hard disk drive without installing the
Service Partition, press ″N″.
8. If a menu appears asking which operating system to
install, highlight the proper operating system and
press ″ENTER″.
9. A menu will appear stating ″Full Recovery:″. Press
″ENTER″ to select.
10. Enter ″Y″ at the three windows which follow.
11. Follow the prompts to complete Recovery.
To create a recovery repair diskette
The Recovery Repair diskette is used to recover the
prompt that is needed to access the Product Recovery
program, if the prompt does not appear. Make a Recovery
Repair diskette and save it for future use. To make a
Recovery Repair diskette:
1. Shut down and restart the computer.
2. Attach the external diskette drive to the computer.
8 ThinkPad s30, s31
3. At the prompt, press F11. (The option to press F11
appears for only a few seconds. You must press F11
quickly). The Product Recovery program main menu
appears.
4. If you are using Windows 2000 Professional, you will
be prompted to select the appropriate operating system
setting. This menu does not appear for Windows 98
SE.
5. Select System Utilities from the main menu. Press
Enter.
6. Select Create a Recovery Repair diskette. Press Enter.
7. Follow the on-screen instructions.
8. When the process is completed, label the diskette as
the Recovery Repair diskette and save it for future use.
To use the recovery repair diskette
1. Shut down and turn off the computer.
2. Attach the external diskette drive to the computer.
3. Insert the Recovery Repair diskette into the drive; then
turn on the computer.
4. Follow the on-screen instructions.
Checkout Guide
Use the following procedure as a guide for computer
problems.
Note: The diagnostic tests are intended to test only IBM
products. Non-IBM products, prototype cards, or
modified options can give false errors and invalid
system responses.
1. Obtain the failing symptoms in as much detail as
possible.
2. Verify the symptoms by attempting to recreate the
failure by running the diagnostic test or by repeating
the same operation.
Note: To run the diagnostics, refer to “Running the
Diagnostics” on page 27.
3. Use the following table with the verified symptom to
determine which page to go to. Search the symptoms
column and find the description that best matches your
symptom; then go to the page shown in the ″Go to″
column.
ThinkPad s30, s31
9
Symptoms (Verified) Go to
Power failure. (The power-on
indicator does not go on or stay
on.)
POST does not complete. No
beeps or error codes/messages
are indicated.
POST beeps, but no error
codes are displayed.
POST detected an error and
displayed numeric error codes.
The diagnostic test detected an
error and displayed a FRU
code.
Other symptoms (such as LCD
display problems).
Symptoms cannot be recreated
(intermittent problems).
“Power System Checkout” on
page 14, then use table in
“Power-Related Symptoms” on
page 23.
“Symptom-to-FRU Index” on
page 19, then use table in “No
Beep Symptoms” on page 22.
“Symptom-to-FRU Index” on
page 19.
“Symptom-to-FRU Index” on
page 19, then use table in
“Numeric Error Codes” on
page 19.
“Running the Diagnostics” on
page 27.
“Symptom-to-FRU Index” on
page 19.
Use the customer-reported
symptoms, and go to
“Symptom-to-FRU Index” on
page 19.
Testing the computer
The ThinkPad computer has a test program called
PC-Doctor for DOS (hereafter called PC-Doctor). You can
detect errors by running the diagnostics test of PC-Doctor.
This section is an overview on detecting the problem.
To run the test, do the following:
Note: In the following procedure, you can select an item
not only with the arrow keys, but also with the
TrackPoint. Instead of pressing Enter, you can also
click the left click button.
1. Connect the USB diskette drive to the computer.
2. Insert the PC-Doctor DOS Disk into the diskette drive;
then power on the computer.
If the computer cannot be powered on, go to “Power
System Checkout” on page 14 and check the power
sources.
If an error code appears, go to “Symptom-to-FRU
Index” on page 19.
The PC-Doctor main panel appears.
3. Select Diagnostics with the arrow keys, and press
Enter.
A pull-down menu appears:
10 ThinkPad s30, s31
Note: The pull-down menu differs depending on the
model.
4. Run the applicable function test.
5. Follow the instructions on the screen. If there is a
problem, PC-Doctor shows some messages.
6. Reseat the cable or connector of the detected FRU
and run the test again.
If the error recurs, replace the FRU that caused the
error.
Note: With some FRUs, especially the system board,
the problem may be caused by peripheral
FRUs. Verify that each peripheral FRU, such as
the flexible cable, has no problem by doing the
following:
a. Replace each peripheral FRU one at a time,
and run the test again.
b. If the peripheral FRUs have no problem,
replace the main FRU itself.
7. To exit the test, select Quit – Exit Diag.
To cancel the test, press Esc.
The following table lists the options on the test menu.
Diagnostics Interactive Tests
v Run Normal Test
v Run Quick Test
v CPU/Coprocessor
v Systemboard
v Video Adapter
v Fixed Disks
v Diskette Drives
v Other Devices
v Memory Test – Full
v Memory Test – Quick
Note: In Keyboard test within Interactive Tests, the Fn key is
scanned only once. Each key should be pressed for at least 2
seconds; otherwise, it cannot be sensed.
v Keyboard
v Video
v Internal Speaker
v Mouse
v Joystick Test
v Diskette Test
v System Load
v Stereo Speaker
Note: (s30 only) The testing of 802.11b requires an
Access Point properly prepared prior to conducting
the test. When testing 802.11b with PC-Doctor
DOS, please confirm the following points:
1. An OBI’s Access Point is located about 3 meters
from the system.
2. The encryption is disabled on the Access Point.
ThinkPad s30, s31
11
If the distance between the Access Point and the
system is too far, the test may report failure even if
the device is properly working. If the encryption is
enabled on the Access Point, the test program
cannot properly communicate with the Access Point
to test the device, and will report failure.
Due to the nature of wireless connection, the test
may report failure with ″No LinkTest response
received″ error message in the log, even if the
device is working properly. When the test failed with
this error, please repeat the test for a few times.
The device may be working properly unless the
same error persists.
Audio Checkout
Do as follows:
1. Boot from the diagnostics diskette and start the
program.
2. Go to Interactive Tests on the main menu and select
the Internal Speakers test.
3. If no sound is heard, replace the speakers.
Fan ASM Checkout
To check the fan ASM, do the following:
1. Boot from the diagnostics diskette and start the
program.
2. Go to Diagnostics on the main menu and select Other
Devices.
3. Follow the description in the window. If the test detects
a fan ASM problem, replace the fan.
Keyboard and Auxiliary Input Device Checkout
Note: Remove the external keyboard if the internal
keyboard is to be tested.
If the internal keyboard does not work or an unexpected
character appears, make sure that the flexible cable
extending from the keyboard is correctly seated on the
connector.
If the keyboard cable connection is correct, run the
Keyboard Test. See “Running the Diagnostics” on page 27
for details.
If the test detects a keyboard problem, do the following
one at a time to correct the problem. Do not replace a
non-defective FRU.
12 ThinkPad s30, s31
1. Replace the keyboard.
2. Replace the system board.
The following auxiliary input devices are supported for this
computer:
v Numeric keypad
v Mouse (USB-compatible)
v External keyboard (USB-compatible)
If any of these devices do not work, reseat the cable
connector and repeat the failing operation.
If the problem does not reoccur, replace the device and
then the system board.
Memory Checkout
DIMM are available for increasing memory capacity.
Onboard (MB) Slot (MB) Total Memory (MB)
128 0 128
128 32 160
128 64 192
128 128 256
Memory errors might stop system operation, show error
messages on the screen, or hang the system.
Use the following procedure to isolate memory problems:
1. Turn off the computer and remove any installed DIMM
from its slot.
2. Boot from the diagnostics diskette and start the
program.
3. Go to Diagnostics on the main menu and select
Memory Test. If an error appears, replace the system
board.
4. Turn off the computer and reinstall the DIMM; then turn
on the computer. Verify the memory size; then test the
memory. If an error appears, replace the DIMM.
Note: Make sure that the DIMM is properly installed into
the connector. A loose connection can cause an
error.
1394/LAN or Wireless Board Checkout (s30 only)
Do the following to isolate the problem to the system
internal 1394/LAN or wireless board:
ThinkPad s30, s31
13
1. Boot from the diagnostics diskette and start the
program.
2. Go to Diagnostics on the main menu and select Other
Devices.
3. Follow the description in the window.
4. If the test detects a problem, replace the board.
Power System Checkout
To verify the symptom of the problem power on the
computer using each of the following power sources:
1. Remove the battery ASM.
2. Connect the AC Adapter and check that power is
supplied.
3. Disconnect the AC Adapter and install the charged
battery ASM; then check that power is supplied by the
battery ASM.
If you suspect a power problem, refer to the appropriate
power supply check listed below:
v “Checking the AC Adapter”
v “Checking the Operational Charging” on page 15
v “Checking the Battery ASM” on page 15
Checking the AC Adapter
You are here because the computer fails only when the AC
Adapter is used:
v If the power-on indicator does not turn on, check the
power cord of the AC Adapter for correct continuity and
installation.
v If the operational charge does not work, go to “Checking
the Operational Charging” on page 15.
Unplug the AC Adapter cable from the computer and
measure the output voltage at the plug of the AC Adapter
cable. See the following figure.
Pin Voltage (V dc)
1 +15.5 to +17.0
2 Ground
If the voltage is not correct, replace the AC Adapter.
14 ThinkPad s30, s31
If the voltage is within the range, do the following:
v Replace the system board.
v If the problem is not corrected, go to “Undetermined
Problems” on page 25.
Note: An audible noise from the AC Adapter does not
always indicate a defective adapter.
Checking the Operational Charging
To check operational charging, use a discharged battery
pack (battery ASM) or a battery ASM that has less than
50% of the total power remaining when installed in the
computer.
Perform operational charging. If the battery status indicator
does not turn on, remove the battery ASM and let it return
to room temperature. Reinstall the battery ASM.
If the charge indicator still does not turn on, replace the
battery ASM. If the charge indicator still does not turn on,
replace the system board. Then reinstall the battery ASM.
If the reinstalled battery ASM is not charged, go to the next
section.
Checking the Battery ASM
Do the following:
1. Power off the computer.
2. Remove the battery ASM and measure the voltage
between battery terminals 1 (+) and 5 (-). See the
following figure:
Note: Signal lines, not used in these steps, are used
for communications between the system and the
battery.
ThinkPad s30, s31
15
3. If the voltage is less than 10.6V, the battery ASM has
been discharged, recharge the battery ASM. If the
voltage is still less than 10.6V, replace the battery.
TrackPoint Checkout
If the external mouse is connected, the TrackPoint does
not work. In this case, please detach the external mouse to
check the TrackPoint.
If this does not correct the TrackPoint problem, continue
with the following:
After you use the TrackPoint, the pointer drifts on the
screen for a short time. This self-acting pointer movement
can occur when a slight, steady pressure is applied to the
TrackPoint pointer. This symptom is not a hardware
problem. No service actions are necessary if the pointer
movement stops in a short period of time.
If a click button problem or pointing stick problem occurs,
do the following:
1. Boot from the diagnostics diskette and start the
program.
2. Go to Interactive Tests on the main menu and select
Mouse.
3. Follow the instructions in the message window.
If either the pointing stick or the click button does not work,
do the following actions one at a time to correct the
problem. Do not replace a non-defective FRU.
1. Reseat the keyboard Touchbutton cables.
2. Replace the keyboard.
3. Replace the system board.
Power Management Features
Three power management modes are available in the
computer system to reduce power consumption and to
prolong battery life.
Standby Mode
In standby mode, the following occurs:
v The LCD backlight turns off.
v The hard disk drive motor stops.
Events that cause the computer to enter standby mode:
v Standby mode requested by the Fn key (Fn+F4).
The computer exits standby and resumes operation when
any key is pressed.
16 ThinkPad s30, s31
Suspend Mode
In suspend mode, the following occurs:
v The LCD is powered off.
v The hard disk drive is powered off.
v The CPU stops.
Events that cause the computer to enter suspend mode:
v Suspend mode requested by the Fn key (Fn+F4).
v The Lid is closed.
v The specified time has elapsed.
v Battery low occurs and hibernation conditions are
insufficient.
Note: When battery is low, the battery status indicator
blinks orange.
Note: In the IBM BIOS Setup Utility, the computer can be
set to suspend when the lid is closed.
The following events cause the computer to resume
operation from suspend mode:
v The Lid is opened.
v The real time clock alarm is signaled.
v The ring indicator (RI) is signaled by a PC Card device
or the internal modem.
v The Fn key is pressed.
v Power switch is pressed.
The computer also exits suspend mode when the battery is
critically low or timer conditions are satisfied for entering
hibernation mode.
Hibernation Mode
Note: Before using hibernation mode, you need a
hibernation file.
In hibernation mode, the following occurs:
v The system status, RAM, VRAM, and setup data are
stored on the hard disk.
v The system is powered off.
Events that cause the computer to enter hibernation mode:
v Hibernation mode requested by function key (Fn+F12).
v Timer conditions are satisfied in suspend mode when
hibernate by timer is enabled.
v A critically low battery condition occurs.
v The power switch is pressed. (BIOS Setup)
ThinkPad s30, s31
17
The computer exits hibernation mode and resumes
operation when the power-on switch is pressed. When
power is turned on, the hibernation file in the boot record
on the hard disk drive is read and the system status is
restored from the hard disk drive.
The power switch must be pressed to cause the computer
to resume operation from hibernation mode.
How to Create the Hibernation Function: Do as
follows:
v Turn off the computer.
v Connect the USB diskette drive to the computer.
v Insert the hibernation utility diskette into the diskette
drive (you can create the diskette using the Diskette
Factory).
v Turn on the computer.
v Follow the instructions on the screen.
Note: If you change the memory size, you need to
recreate the hibernation file or partition. For
partition-based hibernation, use the hibernation
utility to delete the partition first before creating a
new one.
18 ThinkPad s30, s31
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