IBM Infoprint 1412 User Manual

IBM Mobile Systems

ThinkPad i Series 1400 (2611)

This Manual Supports The
Following Models:

1412, 1419, 1452, 1456,
1459, 1472, 1476, 1479,
140A, 140C, 140F, 140H, 140K,
140L, 140M, 140T, 143C, 143H,
143K, 143L, 143M, 143T, 147A,
147F, 147A, 149C, 149F, 149H,
149K, 149M, 149T,

Hardware Maintenance Manual

May 1998

S37L-5192-00
Before using this information and the product it supports,
be sure to read the general information under “Read This
First” on page 1.

First Edition (May 1999)

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 do not allow disclaimers or
express or implied warranties in certain transactions; there­fore, this statement may not apply to you.

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.

Requests for technical information about IBM products
should be made to your IBM Authorized Dealer or your
IBM Marketing Representative.

 Copyright International Business Machines Corpo­ration 1999. All rights reserved. Note to US 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 i Series 1400 Hardware Maintenance

Manual . . . . . . . . . . . . . . . . . . . . . 1

Read This First .................. 1

How to Use Error Messages .......... 1

How to Diagnose Multiple FRUs ........ 1

What to Do First ................ 2

Screw Notices . . . . . . . . . . . . . . . . . 3

Power-On and Setup Password .......... 4

Check Procedures . . . . . . . . . . . . . . . . 5

Power Systems Check ............. 6

Planar Board Check .............. 8

Memory Check . . . . . . . . . . . . . . . . 8

Keyboard and External Input Device Check . . . 9

Audio Function Check ............. 10

TrackPoint IV Check .............. 10

Diskette Drive Check .............. 11

CD-ROM/DVD-ROM Drive Check ........ 11

Modem Board Check ............. 12

BIOS Utility . . . . . . . . . . . . . . . . . . . . 13

Navigating the BIOS Utility ........... 14

Power Management Features ........... 15

Screen Blanking Mode ............. 15

Standby Mode . . . . . . . . . . . . . . . . . 15

Hibernation Mode . . . . . . . . . . . . . . . 16

Symptom-to-FRU Index . . . . . . . . . . . . . . 17

Numeric Error Codes and Messages ...... 17

Beep Symptoms . . . . . . . . . . . . . . . . 19

No Beep Symptoms .............. 19

Keyboard/TrackPoint-Related Symptoms . . . . 20

LCD-Related Symptoms . . . . . . . . . . . . 20

Indicator-Related Symptoms . . . . . . . . . . 22

Power-Related Symptoms . . . . . . . . . . . 22

Memory-Related Symptoms . . . . . . . . . . 22

Audio-Related Symptoms . . . . . . . . . . . 23

PC Card (PCMCIA)-Related Symptoms ..... 23

Power Management-Related Symptoms ..... 23

Peripheral-Device-Related Symptom . . . . . . 24

Modem-Related Symptoms . . . . . . . . . . . 25

Intermittent Problems . . . . . . . . . . . . . 25

Undetermined Problems . . . . . . . . . . . . 25

Related Service Procedures ............ 27

Flash Memory Update ............. 27

Status Indicators . . . . . . . . . . . . . . . . 27

Power Switch . . . . . . . . . . . . . . . . . 29

Diagnostic Program Diskette .......... 29

Maintenance Program Diskette ......... 30

Fn Key Combinations ............. 32

Product Overview . . . . . . . . . . . . . . . . . 33

FRU Removals and Replacements ......... 34

Before FRU Removals and Replacements .... 35

Contents

iii

Battery Assembly . . . . . . . . . . . . . . . 36

DIMM and DIMM Cover ............ 37

Modem Board Cover and Modem Board .... 38

Keyboard . . . . . . . . . . . . . . . . . . . 39

CPU Thermal Plate .............. 41

RTC Battery, CPU EMI Shield and Hard Disk Drive 42

PCMCIA Holder . . . . . . . . . . . . . . . . 44

LCD Assembly ................. 45

Upper Cover (Keyboard Bezel) ......... 47

CD Control Card ................ 49

Trajection Board and Modem Connector (RJ11

Cable Assembly) . . . . . . . . . . . . . . . 50

DC/DC Charger . . . . . . . . . . . . . . . . 51

Audio PCB and S-Video PCB .......... 52

Audio Cable and Speaker Cable ........ 53

Audio Connector Board ............ 55

Fan Assembly . . . . . . . . . . . . . . . . . 56

Diskette and CD-ROM/DVD-ROM Drives Assembly 57

Planar Board . . . . . . . . . . . . . . . . . 60

LCD Front Cover (12.1-inch) .......... 61

LCD Front Cover (14.1-inch) .......... 66

Locations . . . . . . . . . . . . . . . . . . . . . 72

Front View . . . . . . . . . . . . . . . . . . 72

Bottom View . . . . . . . . . . . . . . . . . . 73

Rear View . . . . . . . . . . . . . . . . . . . 73

Switch Locations . . . . . . . . . . . . . . . . 74

System Unit Parts Listing ............. 75

LCD Unit Parts Listing ............... 79

12.1" LCD Unit Parts Listing .......... 79

14.1" LCD Unit Parts Listing .......... 81

Miscellaneous Parts . . . . . . . . . . . . . . . . 83

Telephone/Modem . . . . . . . . . . . . . . . . 84

Power Cord . . . . . . . . . . . . . . . . . . . 85

Notices . . . . . . . . . . . . . . . . . . . . . . 86

Trademarks . . . . . . . . . . . . . . . . . . . 86

iv ThinkPad i Series 1400

ThinkPad i Series 1400 Hardware
Maintenance Manual

Read This First

Before you go to the check procedures, be sure to read
this section.

Important Notes

 Only certified trained personnel should service the

computer.

 Read the FRU service procedures before replacing

any FRUs.

 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 could
be overwritten.

 Ensure that you replace FRUs with the appropriate

model. When you replace the FRU, make sure that
the model of the machine and FRU part number are
correct by referring to the part list.

 FRUs should not be replaced because of a single,

unreproducible failure. Single failure can occur for a
variety of reasons that have nothing to do with a
hardware defect, such as: cosmic radiation,
electrostatic discharge, or software error. FRU
replacement should be considered only when a recur­ring problem exists. In this case, clear the error log
and run the test again. Do not replace FRUs if log
errors do not reappear.

Be careful not to replace a non-defective FRU.

How to Use Error Messages

Use the error codes displayed on the screen to diagnose
failures. If more than one error code is displayed, begin the
diagnosis with the first error code. The cause of the first
error code can result in the other false error codes being
displayed.

How to Diagnose Multiple FRUs

If the adapter or device has more than one FRU, the error
code could be caused by either FRU. Before replacing
multiple FRUs, try removing or exchanging each FRU one
by one in the designated sequence, to see if the symptoms
change.

ThinkPad i Series 1400

1

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 display,
and beep symptoms.

6. Procedure index and page number in which failing
FRU was detected.

7. Failing FRU name and part number.

8. Machine 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 the system was
subjected to stresses beyond normal use:

The following is not covered under warranty:

 LCD panel cracked by applying excessive force or by

being dropped.

 Scratched (cosmetic) parts.
 Cracked or broken plastic parts, broken latches,

broken pins, or broken connectors caused by exces­sive force.

 Damage caused by liquid spilled into the system.
 Damage caused by improperly inserting a PCMCIA

card or installation of an incompatible card.

 Diskette drive damage caused by pressing the

diskette drive cover or inserting diskettes with multiple
labels.

 Damaged or bent diskette drive eject button.
 CD-ROM/DVD-ROM drive damage caused by exces-

sive force, shock, or by being dropped.

 Fuses blown by attaching a nonsupported device.
 Forgotten computer password (making computer

unusable).

2 ThinkPad i Series 1400

If the following symptoms are present, they may indicate
damage caused by non-warranted activity:

 Missing parts may be a symptom of unauthorized

service or modification.

 HDD spindles can become noisy if subjected to

excessive force or by being dropped.

Screw Notices

The computer uses special nylon-coated screws with the
following characteristics:

 They maintain tight connections.
 They do not easily come loose, even with shock or

vibration.

 They need additional force to tighten.
 They should be used only once.

Do the following when you service the machine:

 Keep the screw kit (P/N 05K4841) in your tool bag.
 Always use new screws if you are instructed.
 Use a torque screwdriver if you have one.

Loose screws can cause a reliability problem. The IBM
ThinkPad computer addresses this problem with nylon­coated screws. Tighten screws as follows:

 Plastic to plastic

Turn an additional 90 degrees after the screw head
touches the surface of the plastic part.

 Logic card to plastic

Turn an additional 180 degrees after the screw head
touches the surface of the logic card.

 Torque driver

If you have a torque driver, refer to the "Torque"
column with each step.

Make sure you use the correct screw, and tighten all
screws firmly to the torque shown in the table if you have a
torque screwdriver. Never use a screw that you

removed. Use a new one. Make sure the screws are
tightened firmly.

ThinkPad i Series 1400

3

Power-On and Setup Password

To clear a password from the system, first identify the
system password switch by referring to “Switch Locations”
on page 74, then follow these steps:

1. Turn off the computer.

2. Unplug the AC Adapter and remove the battery.

3. Remove the keyboard by referring to “Keyboard” on
page 39, and the thermal plate by referring to “CPU
Thermal Plate” on page 41.

4. Move the password switch (SW3, switch 4) from OFF
to ON to bypass the password.

Note: SW2 has four switches. Its switch 4 is the

password bypass/check switch. Turning the
switch to the ON position is "bypass pass­word"; the OFF position is "check password".
Refer to “Switch Locations” on page 74.

5. Plug in the AC adapter and turn on the system.

6. While the ThinkPad logo is being displayed, wait for a
beep before pressing F1 to enter the BIOS Utility.

7. Select "System Security" from the BIOS Utility main
menu and press Enter.

8. Set the "Power-On Password" setting to "None" to
clear the password.

9. Save and exit the BIOS Utility.

10. Turn off the system and unplug the AC Adapter.

11. Move the password switch from ON to OFF to enable
the password function.

12. Reinstall the thermal plate and keyboard.

13. Reinstall the battery pack and plug in the AC Adapter.

To use the password function again, enter the BIOS Utility
and set a password.

4 ThinkPad i Series 1400

Check Procedures

Use the following procedure as a guide for computer prob­lems.

Notes:

1. 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.

2. Some test items require tools as shown below:

 Audio wrap cable (P/N: 65G5180)
 FDD: Erasable 2HD diskette
 Parallel: Wrap plug (P/N: 72X8546)
 Parallel: Test cable (P/N: 05K2580)
 Serial: Wrap plug (P/N: 72X8546)
 PCMCIA: PC test card (P/N: 35G4703)
 CD-ROM/DVD-ROM: Any data and audio CDs
 Screwdriver kit (P/N: 95F3598)
 Screwdriver kit (P/N: 05K4693)
 Torque screwdriver (P/N: 05K4695)
 5mm socket wrench (P/N: 05K4694)
 ThinkPad i Series 1400 Diagnostics Diskette (3

diskette pack, P/N: 09N1020)

 ThinkPad i Series 1400 Maintenance Diskette

(P/N: 09N1025)

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.

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.

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 detected an error and
displayed numeric error
code with error message.

“Power Systems Check” on
page 6, then use table in
“Power-Related Symptoms”
on page 22.

“Symptom-to-FRU Index” on
page 17, then use table in
“No Beep Symptoms” on
page 19.

“Symptom-to-FRU Index” on
page 17.

ThinkPad i Series 1400 5

Symptoms (Verified) Go to

Other symptoms Appropriate check

instructions in this section,
then use appropriate tables
in “Symptom-to-FRU Index”
on page 17.

Power Systems Check

To verify the symptom of the problem, power on the com­puter using each of the power sources as follows:

1. Remove the battery pack, diskette drive, and hard
disk drive.

2. Connect the AC Adapter and check that power is sup­plied.

3. Install the diskette drive or hard disk drive one at a
time, and check that power is supplied from each
power source.

If you suspect a power problem, refer to the appropriate
power supply check listed below:

 “Checking the AC Adapter”
 “Checking the Operational Charging” on page 7
 “Checking the Battery Pack” on page 7

Checking the AC Adapter: If the computer fails

only when the AC Adapter is used or if the power-on indi­cator of the AC Adapter does not turn on, make sure of the
following:

 Power cord is not damaged.
 Power cord is securely connected to the AC Adapter

and AC power outlet.

If the above confirmation does not solve the problem,
replace the AC Adapter.

If the power-on indicator of the AC Adapter is on, then
proceed to the next step.

1. Unplug the AC Adapter cable from the computer and
measure the output voltage at the plug of the AC
Adapter cable.

Pin Voltage (V dc)

1 19.0 20.5
2 Ground

6 ThinkPad i Series 1400

 If the measured voltage is correct, replace the

planar board.

 If the problems still persist, go to “Undetermined

Problems” on page 25.

 If the voltage is not correct, go to the next step.

2. Unplug the AC Adapter cable from the AC power
outlet and wait for five minutes or longer to allow the
over-voltage protection circuit of the AC Adapter to be
fully discharged and initialized.

3. Plug the AC Adapter cable into the AC power outlet.

4. Measure the output voltage of the AC Adapter.

5. If the voltage is still not correct, replace the AC
Adapter.

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
or a battery pack that has less than 50% of the total power
remaining when installed in the computer.

Perform operational charging:

1. If the battery indicator does not turn on, remove the
battery pack and leave it to return to room temper­ature.

2. Reinstall the battery pack. If the charge indicator still
does not turn on, replace the battery pack.

Checking the Battery Pack: To check the

battery pack, do the following:

1. Power off the computer.

2. Remove the battery pack and measure the voltage
between battery terminals 2(+) and 7(-). See the fol­lowing figure:

Terminal Signal / Voltage (V dc)

1 Sense
2 Power ( > 8 V dc)
3 Reserved

ThinkPad i Series 1400 7

Terminal Signal / Voltage (V dc)

4 Reserved
5 Thermal
6 Sense
7 Ground

Note: Signal lines, not used in these steps, are used

for communication between the system and
the battery.

3. If the voltage is less than +8 V dc, recharge the
battery pack.

If the voltage is still less than +8 V dc after
recharging, replace the battery.

Planar Board Check

The planar board performs processing functions. Thus, the
planar board can cause processor problems. To verify the
problem, do the following:

1. Boot from the diagnostics diskette and start the PC
Doctor program (please refer to “Running the PC
Doctor Diagnostics Program” on page 29).

2. Run the System Board test to verify the symptom.
This test verifies both the planar board and the CPU
board.

If the tests detect a planar board problem, replace the
planar board.

Note: Don't touch the keyboard and pointing device when

the planar board (system board) test is running.
This may cause an unexpected error.

Memory Check

DIMM are available for increasing memory capacity.

DIMM DIMM Total Memory

32MB 0MB 32MB
0MB 32MB 32MB
32MB 32MB 64MB
64MB 0MB 64MB
0MB 64MB 64MB
64MB 32MB 96MB
32MB 64MB 96MB
64MB 64MB 128MB
128MB 0MB 128MB
0MB 128MB 128MB
128MB 32MB 160MB
32MB 128MB 160MB

8 ThinkPad i Series 1400

DIMM DIMM Total Memory

128MB 64MB 192MB
64MB 128MB 192MB
128MB 128MB 256MB

CAUTION:
This system cannot work without DIMM memory.

Memory errors might stop system operation, show error
messages on the screen, or hang the system.

Use the following procedure to isolate memory problems:
Note: Make sure that the DIMM is properly installed into

the connector. A loose connection can cause an
error.

1. Power off the computer and replace the DIMM.

2. Boot from the diagnostics diskette and start the PC
Doctor program (please refer to “Running the PC
Doctor Diagnostics Program” on page 29).

3. Run the Memory item to run the memory test.

If no error appears, install a new DIMM; if an error
appears, replace the planar board.

Keyboard and External Input Device Check

Note: If an external keyboard is attached, remove it if the

internal keyboard has 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 in the con­nector on the TrackPoint board.

If the tests do not detect a keyboard problem, run the key­board test by doing the following:

1. Boot from the diagnostics diskette and start the PC
Doctor program (please refer to “Running the PC
Doctor Diagnostics Program” on page 29).

2. Select Interactive Tests.

3. Select Keyboard.

4. Follow the instructions in the message window.

If the test detects a keyboard problem, do the following
one at a time to correct the problem. Do not replace a non­defective FRU.

 Ensure the keyboard type switch is correctly set. See

“Switch Locations” on page 74.

 Reconnect the keyboard flexible cables.
 Replace the TrackPoint board.
 Replace the keyboard.

ThinkPad i Series 1400

9

 Replace the planar board.

The following external input devices are supported for this
computer:

 Numeric keypad

 Mouse (PS/2 compatible)

 Keyboard
If any of these devices do not work, reconnect the cable

connector and repeat the failing operation.
If the problem still exists, replace the device, and then the

planar board.

Audio Function Check

Do as follows:

1. Boot from the diagnostics diskette and start the PC
Doctor program (please refer to “Running the PC
Doctor Diagnostics Program” on page 29).

2. Select Interactive Tests.

3. Select Internal Speaker.
If no sound is played, replace the speaker or the

planar board.

4. Select Stereo Speaker.
If no music is played, replace the speaker or the

planar board.

TrackPoint IV Check

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:

Note: 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 PC
Doctor program (please refer to “Running the PC
Doctor Diagnostics Program” on page 29).

2. Select Interactive Tests.

3. Select Mouse.

4. Follow the instructions in the message window.

10 ThinkPad i Series 1400

If either the pointing stick or the click button does not work,
do the following actions one a time to correct the problem.
Do not replace a non-defective FRU.

1. Reconnect the keyboard flexible cables and the
TrackPoint flexible cable.

2. Replace the TrackPoint board.

3. Replace the keyboard.

4. Replace the planar board.

Diskette Drive Check

Do the following to isolate the problem to a controller,
drive, or diskette. A scratch, write-enabled, non-defective,
high-density (2HD) diskette is required.

CAUTION:
Make sure that the diskette does not have more than
one label attached to it. Multiple labels can cause
damage to the drive or can cause the drive to fail.

Do the following to select the test device:

1. Boot from the diagnostics diskette and start the PC
Doctor program (please refer to “Running the PC
Doctor Diagnostics Program” on page 29).

2. Select Diagnostics.

3. Select Diskette Drives.

4. Follow the instructions in the message window.

If an error occurs with the internal diskette drive, reconnect
the connector on the planar board.

If the error still remains:

1. Reconnect the diskette drive cable.

2. Replace the diskette drive cable.

3. Replace the diskette drive.

4. Replace the planar board.

CD-ROM/DVD-ROM Drive Check

Do the following to isolate the problem to a controller,
drive, or CD-ROM/DVD-ROM drive. Make sure that the
CD-ROM/DVD-ROM disc does not have any label attached
to it. The label can cause damage to the drive or can
cause the drive to fail.

Do the following to select the test device:

1. Boot from the diagnostics diskette and start the PC
Doctor program (please refer to “Running the PC
Doctor Diagnostics Program” on page 29).

2. Select Interactive Tests.

3. Select CD-ROM/DVD Test.

4. Follow the instructions in the message window.

ThinkPad i Series 1400

11

If an error occurs, reconnect the connector on the planar
board.

If the error still remains:

1. Reconnect the CD-ROM/DVD-ROM drive cable.

2. Replace the CD-ROM/DVD-ROM drive cable.

3. Replace the CD-ROM/DVD-ROM drive.

4. Replace the planar board.

Modem Board Check

Do the following to isolate the problem to the system
internal modem:

1. Boot from the diagnostics diskette and start the PC
Doctor program (please refer to “Running the PC
Doctor Diagnostics Program” on page 29).

2. Select Diagnostics.

3. Select Other Devices.

4. Select Modem Loopback Test and Modem
Dialtone/DTMF Test.

5. Follow the instructions in the message window.

If an error occurs with the internal modem, do the
following:

1. Change another telephone line and test again.

2. Re-plug the telephone connector.

3. Reconnect the modem board.

4. Replace the modem connector.

5. Replace the planar board.

12 ThinkPad i Series 1400

BIOS Utility

Your computer has a BIOS Utility that allows you to con­figure the computer an its hardware settings.

Note: The computer is also bundled with a Windows-

based computer management utility similar in func­tion with the BIOS Utility called the Notebook
manager.

The computer is already correctly configured for you. If you
make any changes to the computer or you receive an
Equipment Configuration Error message (error code 246)
after you turn on the computer, you need to run the BIOS
Utility.

The BIOS Utility has the following functions:

 Change the system date or time
 Set the power-saving modes and timers
 Set, change, or remove a system password
 Change the system boot drive or display device
 Add or remove serial and parallel devices
 Set the video display features

While the ThinkPad logo is being displayed, wait for a
beep before pressing F1 to enter the BIOS Utility. The
main screen displays (as shown below).

BIOS Utility

System Information

Basic System Settings

Startup Configuration

Onboard Devices Configuration

System Security

PowerManagement

Load Default Settings

↑↓ ↵= Move highlight bar, = Select, Esc = Exit

Note: If the Setup password is set, you need to enter the

Setup password to gain access to the BIOS Utility.

There are seven main menu items:
 System Information

 Basic System Settings

 Startup Configuration

 Onboard Devices Configuration
 System Security
 Power Management

 Load Setup Default Settings

ThinkPad i Series 1400

13

Navigating the BIOS Utility

Keep in mind the following when using the BIOS Utility:

 From the main menu screen, press the up or down

arrow keys to move from one menu item to another;
then press Enter to enter the selected menu.

 Parameters displayed in low brightness (grayed out)

are not user-configurable. The computer detects and
sets the values for these parameters.

 Press the up or down arrow keys to move from one

parameter to another. Press the left or right arrow
keys to change parameter settings. You have to
change some settings when you add a component to
the computer.

 Most of the parameters are self-explanatory.
 To exit a main menu item, press Esc.
 When you press Esc to exit the BIOS Utility from the

main menu screen, the following prompt appears:

Select Yes to save the changes you made to the con­figuration values or No to abandon the changes and
retain the current values.

14 ThinkPad i Series 1400

Power Management Features

Two power management modes are available in the com­puter system to reduce power consumption and to prolong
battery life.

Screen Blanking Mode

When in screen blanking mode, the following occurs:

 The LCD backlight turns off.
Events that cause the computer to enter screen blanking

mode:

 Screen blanking requested by the Fn key (Fn+F3).

Standby Mode

When in standby mode, the following occurs:

 The LCD backlight turns off.

 The hard disk motor stops.

 CPU stops the clock.

Events that cause the computer to enter standby mode:
Note: The standby mode indicator turns on when system

is in standby mode.

 Standby requested by the Fn key (Fn+F4).

 The LCD is closed (if the "Will not Enter Standby

Even if the Lid is Closed" parameter in the Power
Management menu of the BIOS Utility is set to
"Enabled").

 The system (keyboard, mouse, hard disk drive, par-

allel connector, or diskette drive, etc.) is idle for a
certain period of time.

 The battery power is critically-low. The "Sleep upon

Battery-low" in the Power Management menu of the
BIOS Utility is set to "Enabled". Sleep Manager is not
installed and the hibernation file is not present or
invalid.

Note: Before entering standby mode, if "Battery-low

Warning Beep" in the Power Management menu of
the BIOS Utility is set to "Enabled", four short
beeps will be issued every minute for three
minutes. If a powered AC Adapter is not attached,
then the beeps will be continuously issued every
minute until the system shuts down.

Events that cause the computer to exit standby mode:

 The LCD is opened (if the system entered standby

mode from closing the lid).

 A serial or PCMCIA device signals the modem ring

indicator (RI).

 Any key or pointing device operation.

ThinkPad i Series 1400

15

Note: If the computer enters standby mode and the com-

puter is using a communication or I/O PC Card, the
PC Card and application program remain active.

Hibernation Mode

When in hibernation mode, the following occurs:

 The system status, RAM, VRAM, and setup data are

stored on the hard disk.

 The system is powered off.

Events that cause the computer to enter hibernation mode:

 Function combination key (Fn+F12) is pressed.
 The battery power is at a critically-low level.

Note: Before entering standby mode, if "Battery-low

Warning Beep" in the Power Management
menu of the BIOS Utility is set to "Enabled",
four short beeps will be issued every minute
for three minutes.

 The system (keyboard, mouse, hard disk drive, par-

allel connector, or diskette drive, etc.) is idle for a
certain period of time.

Note: The computer cannot enter hibernation mode when

the computer is using a communication or I/O PC
Card.

Events that cause the computer to exit hibernation mode:

 The power-on switch is operated.

When power is turned on, the hibernation history in the
boot record on the hard disk is recognized and the system
status is restored from the hard disk to resume operation.

16 ThinkPad i Series 1400

Symptom-to-FRU Index

The Symptom-to-FRU Index lists the symptoms and errors
and the possible causes. The most likely cause is listed
first.

Note: Perform the FRU replacement or actions in the

sequence shown in the FRU/Action columns. If 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 be used to help you decide which
FRUs should be available when servicing a computer.

Numeric error codes show the errors detected in POST or
system operation (runtime). In the following error codes, X
can be any number.

If no codes are available, use narrative symptoms.
If the symptom, is not listed, go to “Undetermined

Problems” on page 25.
Note: For any IBM device not supported by the diagnostic

codes in this ThinkPad computer, see the manual
for that device.

Numeric Error Codes and Messages

Error
Code

POST
010 Memory Error

040 Diskette Drive

047 Diskette

Message FRU/Action in Sequence

at MMMM:
SSSS:
OOOOh
(R:xxxxh,
W:xxxxh)

Controller
Error

Drive(s) Disa­bled

 Go to “Memory Check”

on page 8.
 DIMM
 Planar board

 Go to “Diskette Drive

Check” on page 11.

 Ensure the diskette

drive configuration

setting in BIOS Utility

is correct.

 Diskette drive cable
 Diskette drive
 Planar board

 Ensure the diskette

drive is not set to "Dis­abled" in the "System
Security" menu of the
BIOS Utility.

 Diskette drive cable
 Diskette drive

ThinkPad i Series 1400 17

Error
Code

050 IDE Drive 0

054 IDE Drive(s)

056 IDE Drive 0

070 Real Time

071 CMOS Battery

072 CMOS

006 Equipment

System Operation (Runtime)
103 Press <Esc>

Message FRU/Action in Sequence

Error

Disabled

Auto Detection
Failed

Clock Error

Bad

Checksum
Error

Configuration
Error

to turn off NMI
or other key to
reboot

 Hard disk connection

board

 Hard disk drive

 Planar board

 Hard disk drive cable
 Hard disk drive

 Hard disk connection

board

 Hard disk drive

 Planar board

 Reset time in the

"Basic System Set­tings" menu of the
BIOS Utility.

 Backup battery (RTC

battery)

 Planar board

 Enter BIOS Utility and

execute "Load Setup
Default Settings".

 Backup battery (RTC

battery)

 Planar board

 Enter BIOS Utility and

execute "Load Setup
Default Settings"; then
reboot the system.

 Backup battery (RTC

battery)

 Planar board

 Ensure the equipment

(diskette drive, hard
disk drive, keyboard,
external mouse, etc.) is
connected properly
and is correctly set in
the BIOS Utility.

 Hard disk connection

board

 Hard disk drive

 Planar board

 Enter BIOS Utility and

execute "Load Setup
Default Settings"; then
reboot the system.

 Remove the non-

factory-installed
adapter card and
reboot the system.

18 ThinkPad i Series 1400

Beep Symptoms

Symptom/Error FRU/Action in Sequence

Five short beeps,
power-on indicator
turns on then off and
LCD is blank.

Four short beeps
every minute and
system doesn't enter
hibernation mode.

 Ensure that "System Boot

Drive" in the "System Secu­rity" menu of the BIOS Utility
is not set to Drive A“.

 Battery

 Go to “Hibernation Mode” on

page 16.

 Hard disk connection board
 Hard disk drive

 Planar board

No Beep Symptoms

Symptom/Error FRU/Action in Sequence

Insert system diskette
and press <Enter>
key to reboot.

No beep, power-on
indicator turns off and
LCD is blank.

No beep, power-on
indicator turns on and
LCD is blank.

 Ensure that "System Boot

Drive" in the "System Secu­rity" menu of the BIOS Utility
is not set to "Drive A".

 Ensure the diskette drive con-

figuration in the "Basic
System Settings" menu of the
BIOS Utility is not set cor­rectly.

 Diskette drive cable

 Diskette drive

 Hard disk connection board
 Hard disk drive

 Planar board

 Power source (battery and

adapter). See “Power
Systems Check” on page 6.

 Ensure every connector is

connected tightly and cor-

rectly.
 Charger board
 Battery pack
 AC Adapter
 Planar board

 Power source (battery and

adapter). See “Power

Systems Check” on page 6.

 Reconnect the LCD connector
 Charger board
 CPU board

 Reconnect the DIMM.
 Planar board

ThinkPad i Series 1400 19

Symptom/Error FRU/Action in Sequence

No beep, power-on
indicator turns on and
LCD is blank. But
you can see POST
on an external CRT.

No beep, power-on
indicator turns on and
a blinking cursor
shown on LCD during
POST.

No beep during
POST but system
runs correctly.

 Reconnect the LCD connec-

tors.

 LCD inverter ID
 LCD LVDS board (for

14.1–inch LCD)

 LCD FPC cable
 LCD inverter
 LCD
 Planar board

 Ensure every connector is

connected tightly and cor­rectly.

 Planar board

 Adjust the audio volume

control.
 Speaker connector
 Planar board
Note: The buzzer is on the planar

board.

Keyboard/TrackPoint-Related Symptoms

Symptom/Error FRU/Action in Sequence

Keyboard (one or
more keys) doesn't
work.

TrackPoint does not
work.

 Go to “Keyboard and External

Input Device Check” on

page 9.

 Reconnect keyboard cables.
 Keyboard
 Planar board

 Go to “TrackPoint IV Check”

on page 10.

 Reconnect keyboard cables.
 TrackPoint board
 Keyboard
 Planar board

LCD-Related Symptoms

Attention: The notebook computer LCD contains over

921,000 thin-film transistors (TFTs). A small number of
missing, discolored, or lighted dots (on all the time) is char­acteristic of TFT LCD technology, but excessive pixel prob­lems can cause viewing concerns. The LCD should be
replaced if the number of missing, discolored, or lighted
dots in any background is 8 or more.

20 ThinkPad i Series 1400

Symptom/Error FRU/Action in Sequence

No beep, power-on
indicator turns on and
LCD is blank.

LCD backlight doesn't
work.

LCD is too dark.
LCD brightness

cannot be adjusted.
LCD contrast cannot

be adjusted.

Unreadable LCD
screen.

Missing pels in char­acters.

Abnormal screen
Wrong color dis-

played.

LCD has extra hori­zontal or vertical lines
displayed.

 Power source (battery and

adapter). See “Power
Systems Check” on page 6.

 Reconnect the LCD connector
 Charger board
 CPU board

 Hard disk drive

 LCD inverter ID

 LCD LVDS board (for

14.1–inch LCD)

 LCD FPC cable
 Inverter
 LCD
 Planar board

 Enter BIOS Utility and

execute "Load Setup Default
Settings"; then reboot the
system.

 Reconnect the LCD connec-

tors

 Keyboard (if contrast and

brightness function keys do
not work)

 LCD inverter ID

 LCD LVDS board (for

14.1–inch LCD)

 LCD FPC cable
 LCD inverter
 LCD
 Planar board

 Reconnect all LCD connec-

tors

 LCD inverter ID

 LCD FPC cable

 LCD inverter
 LCD
 Planar board

 LCD

 LCD FPC cable

 LCD inverter ID

 Inverter
 Planar board

ThinkPad i Series 1400 21

Indicator-Related Symptoms

Symptom/Error FRU/Action in Sequence

Indicator incorrectly
remains off or on, but
system runs cor­rectly.

 Reconnect the indicator board

connector.

 Indicator board

Power-Related Symptoms

Symptom/Error FRU/Action in Sequence

Power shuts down
during operation.

The system doesn't
power on.

The system doesn't
power off.

Battery can't be
charged.

 Go to “Power Systems

Check” on page 6.
 AC Adapter
 Battery pack

 Audio and battery function

connection board
 Charger board
 Planar board

 Go to “Power Systems

Check” on page 6.
 AC Adapter
 Charger board
 Planar board

 Go to “Power Systems

Check” on page 6.

 Hold and press the power

switch for more than 4

seconds.
 Charger board
 Planar board

 Go to “Power Systems

Check” on page 6.
 Battery pack
 Charger board
 Planar board

Memory-Related Symptoms

Symptom/Error FRU/Action in Sequence

Memory count (size)
appears different
from the actual size.

22 ThinkPad i Series 1400

 Go to “Memory Check” on

page 8.

 Enter BIOS Utility and

execute "Load Setup Default

Settings"; then reboot the

system.
 DIMM
 Planar board

Audio-Related Symptoms

Symptom/Error FRU/Action in Sequence

Internal speakers
make noise or emit
no sound.

External speakers
make noise or emit
no sound.

In DOS or Windows,
multimedia programs,
no sound comes from
the computer. (Only
system beeps are
heard at power on.)

 Speaker volume control
 Go to “Audio Function Check”

on page 10.

 Speaker volume control
 Go to “Audio Function Check”

on page 10.

 Speaker volume control
 Go to “Audio Function Check”

on page 10.

PC Card (PCMCIA)-Related Symptoms

Symptom/Error FRU/Action in Sequence

System cannot detect
the PC Card
(PCMCIA)

PCMCIA slot pin is
damaged.

 PC Card (PCMCIA) slots

assembly

 Planar board
PC Card (PCMCIA) slots assembly

Power Management-Related Symptoms

Symptom/Error FRU/Action in Sequence

The system doesn't
enter hibernation
mode and four short
beeps every minute
are heard.

The system doesn't
resume from
hibernation mode.

The system doesn't
enter standby mode
after closing the LCD.

The system doesn't
resume from standby
mode after opening
the LCD.

 Go to “Hibernation Mode” on

page 16.

 Boot an operating system and

press Fn+F12 to see if the
computer enters hibernation

mode.
 TrackPoint board
 Keyboard

 Hard disk connection board
 Hard disk drive

 Planar board

 Go to “Hibernation Mode” on

page 16.

 Hard disk connection board
 Hard disk drive

 Planar board

 Chassis (LCD cover switch on

chassis)
 Planar board

 Chassis (LCD cover switch on

chassis)
 Planar board

ThinkPad i Series 1400 23

Symptom/Error FRU/Action in Sequence

Battery fuel-gauge
doesn't go higher
than 90%.

System configuration
does not match the
installed devices.

System hangs
intermittently.

 Remove battery pack and let

it cool for 2 hours.

 Refresh battery (continue

using battery until power off,

then charge the battery).
 Battery pack
 Charger board
 Planar board

 Enter BIOS Utility and

execute "Load Setup Default

Settings"; then reboot the

system.
 Reconnect hard

disk/diskette/CD-ROM/DVD-ROM

drive connector.
 Hard

disk/diskette/CD-ROM/DVD-ROM

drive connector
 Fan
 Planar board

Peripheral-Device-Related Symptom

Symptom/Error FRU/Action in Sequence

External display does
not work correctly.

Printer problems.  Run printer self-test.

Serial or parallel port
device problems.

 Press Fn+F9, LCD/CRT/Both

display switching.
 Planar board

 Printer driver
 Printer cable

 Ensure that "Parallel Port" in

the "Onboard Devices Config-

uration" menu of the BIOS

Utility is correctly set.
 Planar board

 Device driver
 Device cable
 Device

 Ensure that "Serial Port" and

"Parallel Port" in the

"Onboard Devices Configura-

tion" menu of the BIOS Utility

is correctly set.
 Planar board

24 ThinkPad i Series 1400