IBM Thinkpad A21e A22e I 1800 Manual

							6. When the Enter New Password field opens, leave it
blank and pressEntertwice.
7. PressEnterin the Changes have been saved window.
8. PressF10; then selectYe sin the Setup confirmation
window.
How to remove the hard-disk password
AttentionIfUser onlymode is selected and the user HDP is
forgotten and cannot be made available to the
servicer, IBM does not provide any services to reset
the user HDPs nor recover data from the hard-disk
drive. The hard-disk drive can be replaced for a
scheduled fee.
To remove the user HDP that has been forgotten, when
the SVP and master HDP is known, do the following:
1. Power on the computer by pressing and holdingF1.
2. Enter the SVP. The IBM BIOS Setup Utility menu
appears.
3. SelectPassword, using the cursor keys to move down
the menu.
4. SelectHard-diskxpassword, wherexis the letter of
the hard-disk drive. A pop-up window opens.
5. Select eitherUser HDPorMaster HDP.
6. Enter the master HDP; then leave the New Password
field blank and pressEntertwice.
7. PressF10.
8. SelectYe sin the Setup Configuration window.
Both user HDP and master HDP will have been
removed.
Related service information
General descriptions27 
						

							Power management
To reduce power consumption, the computer has three
power management modes: screen blank, standby, and
hibernation.
NotesvScreen blank mode is calledstandby modein
Windows 95 and Windows NT.
vStandby mode is calledsuspend modein
Windows 95 and Windows NT.
Screen blank modeScreen blank mode has three variants, as follows:
1. If you pressFn+F3, or the time set on the″LCD off
timer″in IBM BIOS Setup Utility expires,
vThe LCD backlight turns off.
vThe hard-disk drive motor stops.
vThe speaker is muted.
2. If you are using the ACPI operating system and you
pressFn+F3,
vThe LCD backlight turns off.
vThe hard-disk drive motor stops.
3. If the time set on the″Turn off monitor″timer in the
operating system expires,
vThe LCD backlight turns off.
To end screen blank mode and resume normal operation,
press any key.
Standby modeWhen the computer enters standby mode, the following
events occur in addition to what occurs in screen blank
mode:
vThe LCD is powered off.
vThe hard-disk drive motor stops in models listed below.
A21e series
MT2655-21x, 22x, 23x, 31x, 32x, 33x, 41x,
42x, 43x, 71x, 72x, 73x, 81x, 82x, 83x, 91x,
92x, 93x, B2x, B4x
A22e series
MT2655-25x, 26x, 27x, 35x, 36x, 37x, 75x,
76x, 77x, 85x, 86x, 87x, MT2663-77x,,
MT2664-77x
i 1800 series
MT2655-P3J
vThe hard-disk drive is powered off in models listed
below.
A22e series
MT2655-45x, 46x, 47x, 55x, 56x, 57x, 65x,
66x, 67x, 95x, 96x, 97x, A5x, A6x, A7x, B5x,
B6x, B7x
Related service information
28ThinkPad A21e, A22e, i 1800 (MT 2655/2663/2664) 
						

							i 1800 series
MT2655-P7J, PAJ
vThe CPU stops.
To enter standby mode, pressFn+F4.
Note:You can change the action ofFn+F4, if you are
using the ACPI operating system.
In certain circumstances, the computer goes into standby
mode automatically:
vIf a“suspend time”has been set on the timer, and the
user does not do any operation with the keyboard, the
TrackPoint, the hard disk, the parallel connector, or the
diskette drive within that time.
vIf the battery indicator blinks orange, indicating that the
battery power is low. (Alternatively, ifHibernate when
battery becomes lowhas been selected in the“Power
Management Properties”window, the computer goes
into hibernation mode.)
Note for the APM operating system:
Even if you don’t set the low-battery alarm, the charge
indicator notifies you when the battery is low, and then the
computer enters the power-saving mode automatically.
This default low-battery behavior is independent of the
operating system; so if you have set the low-battery alarm,
the computer may not do what you specified. It chooses
either your setting or the default setting, whichever is
appropriate.
If you are using the ACPI operating system, only the
low-battery alarm is available.
To cause the computer to return from standby mode and
resume operation, do one of the following:
vPress theFnkey.
vOpen the LCD cover (only if you are using Windows Me
and you entered standby mode by closing the LCD
cover).
vTurn on the power switch.
Also, the computer automatically returns from standby
mode and resumes operation in either of the following
events:
vThe ring indicator (RI) is signaled by a serial device or a
PC Card device (Windows 2000 does not support ring
indicator (RI) resume by PC Card device.)
vThe time set on the resume timer elapses. In Windows
98, theScheduled Taskssetting takes priority over the
Resume on timerselection in the“Power Management
Properties”window.
Related service information
General descriptions29 
						

							Note:The computer does not accept any input
immediately after it enters standby mode. Wait a
few seconds before taking any action to reenter
operation mode.
Hibernation mode
Note for Windows NTIf you are using Windows NT in the default format,
NTFS, you cannot create a hibernation file. If you
want to use hibernation mode, you will need to
reinstall Windows NT with FAT format.
In hibernation mode, the following occurs:
vThe system status, RAM, VRAM, and setup data are
stored on the hard disk.
vThe system is powered off.
Note for the APM operating system
If you are running the computer on ac power and using a
communication PC Card, the computer cannot enter
hibernation mode.
To cause the computer to enter hibernation mode, do any
of the following:
vPress theFn + F12keys.
vIf you are using the APM operating system and have set
the mode toPower switch mode [Hibernation], turn
off the power switch.
Also, the computer automatically goes into hibernation
mode in either of the following conditions:
vIf you are using an operating system other than
Windows 98 and the timer conditions are satisfied in
suspend mode.
vIf you are using the APM operating system and have set
the mode toHibernate when battery becomes low,
and the battery charge becomes critically low.
Note:If you are using the ACPI operating system, you can
define closing the lid, pressing the Power button
and pressingFn+F4as events that cause the
system to go into hibernation mode.
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.
Related service information
30ThinkPad A21e, A22e, i 1800 (MT 2655/2663/2664) 
						

							Checkout guide
Use the following procedures as a guide in identifying and
correcting problems with the ThinkPad computer.
Note:The diagnostic tests are intended to test only IBM
products. The use of non-IBM products, prototype
cards, or modified options can lead to false
indications of errors and invalid system responses.
1. Identify the failing symptoms in as much detail as
possible.
2. Verify the symptoms. Try to re-create the failure by
running the diagnostic test or by repeating the
operation.
Testing the computer
The ThinkPad computer has a test program called
PC-Doctor DOS (hereafter calledPC-Doctor). You can
detect errors by running the diagnostics test included in
PC-Doctor. This section is an overview of the procedure.
For details that depend on model-unique functions, refer to
“Product overview”on page 39.
For some possible configurations of the computer,
PC-Doctor might not run correctly. To avoid this problem,
you need to initialize the computer setup by use of the IBM
BIOS Setup Utility before you run PC-Doctor. On the IBM
BIOS Setup Utility screen, pressF9,Enter,F10, and then
Enter.
Note:When you initialize the computer configuration,
some devices are disabled, such as the serial port.
If you test one of these devices, you will need to
enable it by using PS2.EXE.
PC-Doctor cannot be used to test a device that is in the
docking station, even if the computer supports the docking
station. To test a USB device, connect it to the USB
connector of the computer. To test the Ultrabay 2000
device, install it in the Ultrabay 2000 slot of the computer.
To run the test, do as follows:
Note:In the following procedure, you can select an item
not only with the arrow keys, but also with the
TrackPoint. Instead of pressingEnter, click the left
button.
1. Insert the PC-Doctor disk into the diskette drive; then
power on the computer.
If the computer cannot be powered on, go to“Power
system checkout”on page 34, and check the power
sources.
Checkout guide
General descriptions31 
						

							If an error code appears, go to“Symptom-to-FRU
index”on page 46.
On the first screen, select the model and pressEnter.
Follow the instructions on the screen.
2. The main panel of PC-Doctor appears.
3. SelectDiagnosticswith the arrow keys, and press
Enter.
A pull-down menu appears. (Its exact form depends on
the model.)
The options on the test menu are as follows:
Diagnostics Interactive Tests
vRun Normal Test
vRun Quick Test
vCPU/Coprocessor
vSystemboard
vVideo Adapter
vSerial Ports
vParallel Ports
vFixed Disks
vDiskette Drives
vOther Devices
vZIP Drive (*)
vLS-120 Drive (*)
vCommunication
vMemory Test–Full
vMemory Test–QuickvKeyboard
vVideo
vInternal Speaker
vMouse
vJoystick Test
vDiskette
vSystem Load
vCD-ROM/DVD Test
vStereo Speaker
Notes:
vIn theKeyboardtest inInteractive Tests, theFnkey
is scanned only once. Each key should be held down
for at least 2 seconds; otherwise, it cannot be sensed.
vOn some models, the sound card is not recognized in
theStereo Speakerin theInteractive Tests. To test it,
use the audio device test in theOther Devicesin the
Diagnostics.
vVideo Adaptertest supports only the LCD display on
ThinkPad. Before running PC-Doctor DOS, detach the
external monitor.
vTo testZIP DriveorLS-120 Drive, each media is
needed to be inserted before start testing.
Checkout guide
32ThinkPad A21e, A22e, i 1800 (MT 2655/2663/2664) 
						

							Diagnostics
Quit Interactive TestsHardware Info
UtilityF1=Help
Run Quick TestRun Normal Test
Systemboard CPU/Coprocessor
Video Adapter
Serial Ports
Diskette Drives Fixed DisksParallel Ports
Other Devices
ZIP Drive
Communication
Memory Test - Full
Memory Test - Quick
Use the cursor keys and ESC to move in menus. Press ENTER to select.
PC-DOCTOR 2.0 Copyright 2000 PC-Doctor, Inc. All Rights Reserved.
4. Run the applicable function test.
5. Follow the instructions on the screen. If there is a
problem, PC-Doctor shows messages describing it.
6. To exit the test, selectQuit—Exit Diag.
To cancel the test, pressEsc.
Note:After executing PC-Doctor, check the system
time/date and reset them if needed.
Detecting system information with
PC-Doctor
PC-Doctor can detect the following system information:
Hardware InfovSystem Configuration
vMemory Contents
vPhysical Disk Drives
vLogical Disk Drives
vVGA Information
vIDE Drive Info
vPCI Information
vPNPISA Info
vSMBIOS Info
vVESA LCD Info
UtilityvRun External Tests
vSurface Scan Hard Disk
vBenchmark System
vDOS Shell
vTech Support Form
vBattery Rundown
vView Test Log
vPrint Log
vSave Log
vFull Erase Hard Drive
vQuick Erase Hard Drive
Checkout guide
General descriptions33 
						

							Power system checkout
To verify a symptom, do the following:
1. Power off the computer.
2. Remove the battery pack.
3. Connect the ac adapter.
4. Check that power is supplied when you power on the
computer.
5. Power off the computer.
6. Disconnect the ac adapter and install the charged
battery pack.
7. Check that the battery pack supplies power when you
power on the computer.
If you suspect a power problem, see the appropriate one
of the following power supply checkouts:
v“Checking the ac adapter”
v“Checking operational charging”on page 35
v“Checking the battery pack”on page 35
v“Checking the backup battery”on page 36
Checking the ac adapterYou are here because the computer fails only when the ac
adapter is used:
vIf the power problem occurs only when the port
replicator is used, replace the port replicator.
vIf the power-on indicator does not turn on, check the
power cord of the ac adapter for correct continuity and
installation.
vIf the computer does not charge during operation, go to
″Checking operational charging.″
To check the ac adapter, do the following:
1. Unplug the ac adapter cable from the computer.
2. Measure the output voltage at the plug of the ac
adapter cable. See the following figure:
2
1
Pin Voltage (V dc)
1 +15.5 to +17.0
2 Ground
vIf the voltage is not correct, replace the ac adapter.
vIf the voltage is acceptable, do the following:
–Replace the system board.
–If the problem persists, go to“Product overview”
on page 39.
Note:Noise from the ac adapter does not always indicate
a defect.
Checkout guide
34ThinkPad A21e, A22e, i 1800 (MT 2655/2663/2664) 
						

							Checking operational chargingTo check whether the battery charges properly during
operation, 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. If the battery status indicator
or icon does not turn on, remove the battery pack and let it
return to room temperature. Reinstall the battery pack. If
the charge indicator or icon still does not turn on, replace
the battery pack.
If the charge indicator still does not turn on, replace the
system board. Then reinstall the battery pack. If it is still
not charged, go to the next section.
Checking the battery packBattery charging does not start until the Power Meter
shows that less than 95% of the total power remains;
under this condition the battery pack can charge to 100%
of its capacity. This protects the battery pack from being
overcharged or from having a shortened life.
To check the status of your battery, move your cursor to
the Power Meter icon in the icon tray of the Windows
taskbar and wait for a moment (but do not click), and the
percentage of battery power remaining is displayed. To get
detailed information about the battery, double-click the
Power Meter icon.
Note:If the battery pack becomes hot, it may not be able
to charge. Remove it from the computer and leave it
at room temperature for a while. After it cools down,
reinstall and recharge it.
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 1 (+) and 5 (). See the
following figure:
2
3
4
5(-)1(+)
Terminal Voltage (V dc)
1 + 0 to + 12.6
5 Ground ()
3.for Lithium ion battery;
vIf the voltage is less than +11.0 V dc, the battery
pack has been discharged.
Checkout guide
General descriptions35 
						

							Note:Recharging will take at least 3 hours, even if
the indicator does not turn on.
If the voltage is still less than +11.0 V dc after
recharging, replace the battery.
for Nickel metal hydride battery;
vIf the voltage is less than +8.0 V dc, the battery
pack has been discharged.
Note:Recharging will take at least 3 hours, even if
the indicator does not turn on.
If the voltage is still less than +8.0 V dc after
recharging, replace the battery.
4.for Lithium ion battery;
vIf the voltage is more than +11.0 V dc, measure the
resistance between battery terminals 4 and 5. The
resistance must be 4 to 30 K ohm.
for Nickel metal hydride battery;
vIf the voltage is more than +8.0 V dc, measure the
resistance between battery terminals 4 and 5. The
resistance must be 4 to 30 K ohm.
If the resistance is not correct, replace the battery
pack. If the resistance is correct, replace the system
board.
Checking the backup batteryDo the following:
1. Power off the computer, and unplug the ac adapter
from it.
2. Turn the computer upside down.
3. Remove the battery pack (see“1010 Battery pack”on
page 57).
4. Remove the backup battery (see“Checking the battery
pack”on page 35).
5. Measure the voltage of the backup battery. See the
following figure.
Red (+)
Black (-)Wire Voltage (V dc)
Red +2.5 to +3.2
Black Ground
vIf the voltage is correct, replace the system board.
vIf the voltage is not correct, replace the backup battery.
vIf the backup battery discharges quickly after
replacement, replace the system board.
Checkout guide
36ThinkPad A21e, A22e, i 1800 (MT 2655/2663/2664)