ThinkPad 390 / 390E

3 variants of this machine type, side by side. A cell spanning several columns is shared by those models, so the narrow cells are the differences — memory type, battery chemistry and panel are what usually change across a range.

IBM model codes — 218 models of machine type 2626

Variant	Model codes
ThinkPad 390	2626-200, 2626-20A, 2626-20C, 2626-20F, 2626-20J, 2626-20K, 2626-20M, 2626-20P, 2626-20S, 2626-20T, 2626-20U, 2626-500, 2626-50A, 2626-50C, 2626-50F, 2626-50K, 2626-50M, 2626-50P, 2626-50S, 2626-50T, 2626-50U, 2626-5AJ, 2626-700, 2626-70A, 2626-70C, 2626-70F, 2626-70J, 2626-70K, 2626-70M, 2626-70P, 2626-70S, 2626-70T, 2626-70U
ThinkPad 390E	2626-900, 2626-90A, 2626-90C, 2626-90F, 2626-90H, 2626-90J, 2626-90K, 2626-90M, 2626-90P, 2626-90S, 2626-90T, 2626-90U, 2626-95J, 2626-A0U, 2626-B0A, 2626-B0C, 2626-B0F, 2626-B0G, 2626-B0H, 2626-B0J, 2626-B0K, 2626-B0M, 2626-B0P, 2626-B0S, 2626-B0T, 2626-B0U, 2626-B0X, 2626-B5J, 2626-C00, 2626-C0A, 2626-C0C, 2626-C0F, 2626-C0H, 2626-C0K, 2626-C0M, 2626-C0P, 2626-C0S, 2626-C0T, 2626-C0U, 2626-C5J, 2626-CAJ, 2626-D00, 2626-D0A, 2626-D0C, 2626-D0E, 2626-D0F, 2626-D0H, 2626-D0J, 2626-D0K, 2626-D0M, 2626-D0P, 2626-D0S, 2626-D0T, 2626-D0U, 2626-D5J, 2626-E00, 2626-E0A, 2626-E0C, 2626-E0F, 2626-E0H, 2626-E0J, 2626-E0K, 2626-E0M, 2626-E0P, 2626-E0S, 2626-E0T, 2626-E0U, 2626-EN0, 2626-ENA, 2626-ENF, 2626-ENJ, 2626-ENM, 2626-ENU
ThinkPad 390X	2626-ALL, 2626-F00, 2626-F0A, 2626-F0C, 2626-F0F, 2626-F0G, 2626-F0H, 2626-F0J, 2626-F0K, 2626-F0M, 2626-F0P, 2626-F0S, 2626-F0T, 2626-F0U, 2626-F0X, 2626-F5J, 2626-G0A, 2626-G0C, 2626-G0F, 2626-G0G, 2626-G0H, 2626-G0J, 2626-G0K, 2626-G0M, 2626-G0P, 2626-G0S, 2626-G0T, 2626-G0X, 2626-G5J, 2626-H00, 2626-H0A, 2626-H0C, 2626-H0E, 2626-H0F, 2626-H0G, 2626-H0H, 2626-H0J, 2626-H0K, 2626-H0M, 2626-H0P, 2626-H0S, 2626-H0T, 2626-H0U, 2626-H0X, 2626-H5J, 2626-HNA, 2626-HNF, 2626-HNG, 2626-HNJ, 2626-HNM, 2626-HNU, 2626-J0A, 2626-J0C, 2626-J0F, 2626-J0G, 2626-J0H, 2626-J0J, 2626-J0K, 2626-J0M, 2626-J0P, 2626-J0S, 2626-J0T, 2626-J0U, 2626-J0X, 2626-JNA, 2626-JNF, 2626-JNG, 2626-JNJ, 2626-JNM, 2626-JNU, 2626-L0A, 2626-L0C, 2626-L0E, 2626-L0F, 2626-L0G, 2626-L0H, 2626-L0J, 2626-L0K, 2626-L0M, 2626-L0P, 2626-L0S, 2626-L0T, 2626-L0U, 2626-L0X, 2626-L2G, 2626-L2U, 2626-L5J, 2626-LNA, 2626-LNF, 2626-LNG, 2626-LNJ, 2626-LNM, 2626-LNU, 2626-M0A, 2626-M0C, 2626-M0F, 2626-M0G, 2626-M0H, 2626-M0J, 2626-M0K, 2626-M0M, 2626-M0P, 2626-M0S, 2626-M0T, 2626-M0U, 2626-M0X, 2626-MNA, 2626-MNF, 2626-MNG, 2626-MNJ, 2626-MNM, 2626-MNU

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.

The system status LED indicators show the current com puter status. The following shows the location of each indicator symbol and the meaning of each indicator.

Important Service Information

  Important Diskette fixes are customer installable.

The diskette fixes are located on the PC Company Bulletin Board Service (BBS).

The direct phone line for modem connection is 919-557-0001 or tieline 255-0001.

Advise customers to contact the PC Company HelpCenter at 800-772-2227 if they need assistance in obtaining or installing any diskette fixes.

Customers in Canada should call IBM HelpPC at 800-565-3344 for assistance or down-load information.

The Canadian BBS phone numbers are:

• Montreal 514-938-3022
• Toronto 905-316-4255
• Vancouver 604-664-6464
• Winnipeg 204-934-2735

FRU Replacement Strategy

Before Replacing Parts Ensure that all diskette fixes are installed prior to replacing any FRUs listed in this manual.

Use the following strategy to prevent unnecessary FRU replacement and service expense:

• If you are instructed to replace a FRU and that does not correct the problem, reinstall the original  FRU before you continue.
• Some computers have both a processor board and a system board.  If you are instructed to replace either the processor board or the system board, and the first  board that you replaced does not correct the problem, reinstall the original board, then replace the other  (processor or system) board.
• If an adapter or device consists of more than one FRU, an error code may be caused by any of the  FRUs. Before replacing the adapter or device, remove the FRUs, one by one, to see if the symptoms change.  Replace only the FRU that changed the symptoms.

  Attention A customized setup configuration (other than default settings) may exist on the computer you are servicing.

Running Automatic Configuration may alter those settings. Note the current configuration settings (using the View Configuration option) and verify that the settings are in place when service is complete.

Hard Disk Drive Replacement Strategy:

Always try to run a low-level format before replacing a hard disk drive.

  Attention The drive startup sequence in the computer you are servicing might have been changed.

Be extremely careful during write operations such as copying, saving, or formatting.

Data or programs can be overwritten if you select an incorrect drive.

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 false error codes being displayed. If no error code is displayed, see if the error symptom is listed in the Symptom-to-FRU Index for the computer you are servicing.

How to Read POST Error Messages

POST error messages are displayed on the screen as three, four, five, or eight digits.

The error messages that can be displayed as shorter POST messages are highlighted in this index.

Some digits will represent different information for SCSI errors versus non-SCSI errors.

The following example shows which digits display the shorter POST error messages and also defines the SCSI information in an eight-digit error message.

Shorter POST Messages

• Format: an 8-character string with varying definitions.
• Characters 1 and 2: Reserved.
• Character 3: Device Code.
• Characters 4 to 8: Dependent on SCSI or non-SCSI error.
• For SCSI errors:
  • Character 4: SCSI ID.
  • Character 5: Logical Unit Number (SCSI).
  • Character 6: Slot Number (SCSI).
  • Characters 7 and 8: Size (SCSI).

All SCSI devices are set to a different SCSI ID. Duplicate SCSI ID settings can generate a false error message.

Use the SCSI ID to determine whether the error message is coming from an internal or an external device.

The ThinkPad 390 and 390E are flexible desktop-replacement laptops featuring integrated floppy and CD-ROM drives.

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'

   • 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.

Do as follows:

For TP 390E - (2626)

1. Boot from and start PC Doctor, (See 'PC Doctor Systems Diagnostics' for details.)
2. Select Interactive Tests
3. Select Internal Speaker

   If no sound is played, replace the speaker or the system board.

4. Select Stereo Speaker

   If no music is played, replace the speaker or the system board.

For TP 390/i Series 1700 - (2626, 2627)

1. Go to the Startup menu by selecting Audio Play and Record Test in the diagnostic diskette..
2. If no music is played, replace the speaker or the planar board.

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.

See 'Running the Diagnostics' for details.

For TP 390E - (2626)

Do the following to isolate the problem to a controller, drive, or diskette.

See 'Running the Diagnostics' for details.

1. Boot from and start PC Doctor. (See 'PC Doctor System Diagnostics' for details.)
2. Select Diagnostics .
3. Select Diskette Drives .
4. Follow the instructions in the message window.

For TP 390/i Series 1700 - (2626, 2627)

1. Boot from the diagnostics diskette and start the PQA program  (please refer to 'PQA System Diagnostics' ).
2. Go to Diskette Drive (FDD ASM) in the test items.
3. Press F2 in the test items.
4. Follow the instructions in the message window.

For TP 390E or 390/i - (2626, 2627)

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

If the error still remains:

1. Reseat the Combobay ASM.
2. Reseat the Diskette Drive (FDD ASM).
3. Replace the Diskette Drive (FDD ASM).
4. Replace the Combobay Interposer card ASM.
5. Replace the Planar board.

Do the following to isolate the problem to a controller, drive, or CD-ROM.

Make sure that the CD-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:

For TP 390E - (2626)

1. Boot from and start PC Doctor. (See 'PC Doctor System Diagnostics' for details.)
2. Select Interactive Tests.
3. Select CD-ROM/DVD Test.
4. Follow the instructions in the message window.
5. If an error occurs, reseat the connector on the system board.

For TP 390/i Series 1700 - (2626, 2627)

1. Boot from the diagnostics diskette and start the PQA program  (please refer to 'PQA System Diagnostics').
2. Go to CD-ROM in the test items.
3. Press F2 in the test items.
4. Follow the instructions in the message window.
5. If an error occurs, reseat the connector on the planar board.

For TP 390E or 390/i - (2626, 2627)

If the error still remains:

1. Reseat the Combobay ASM.
2. Reseat the CD-ROM ASM.
3. Replace the CD-ROM ASM.
4. Replace the Combobay Interposer card ASM.
5. Replace the System/Planar board.

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 in the connector.

If the keyboard cable connection is correct, run the Keyboard Test.

For TP 390E - (2626)

1. Boot from and start PC Doctor. (See 'PC Doctor System Diagnostics' for details.)
2. Select Interactive Tests .
3. Select Keyboard .
4. Follow the instructions in the message window.

For TP 390/i Series 1700 - (2626, 2627)

See 'Running the Diagnostics' for details.

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

1. Replace the keyboard.
2. Replace the system/planar board.

The following auxiliary input devices are supported for this computer:

• Numeric keypad
• Mouse (PS/2 compatible)
• External keyboard (with keyboard/mouse cable)

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 planar board.

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

For TP 390E - (2626)

1. Boot from and start PC Doctor. (See 'PC Doctor System Diagnostics' for details.)
2. Select Diagnostics .
3. Select Other Devices .
4. Run Modem Loopback Test and Modem Dialtone/DTMF Test .
5. Follow the instructions in the message window.
6. If the test detects a modem problem, replace the modem card.

For TP 390/i Series 1700 - (2626, 2627)

1. Go to the Startup menu by selecting Modem Dial and Data Transfer in the diagnostics diskette.
2. Follow the instructions in the message window.
3. If the test detects a modem problem, replace the modem card.

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 ina short period of time.

If a click button problem or pointing stick problem occurs, do the following:

For TP 390E - (2626)

1. Boot from and start PC Doctor. (See 'PC Doctor System Diagnostics' for details.)
2. Select Interactive Tests
3. Select Mouse
4. Follow the instructions in the message window.

For TP 390/i Series 1700 - (2626, 2627)

1. Boot from the diagnostics diskette and start the PQA program  (please refer to 'PQA System Diagnostics' ).
2. Go to Pointing Dev. in the test items.
3. Press F2 in the test items.
4. Follow the instructions in the message window.

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. Reseat the keyboard cables.
2. Replace the keyboard.
3. Replace the system/planar board.

Boot from the Diagnostic Program Diskette and select Running Audio Resource and Speaker-Out Test from PC DOS 7.0 Startup Menu. Follow the instructions on the screen to execute the audio test. If the test fails, go to 'Audio Checkout'.

  Attention You should execute this program two times (one for internal and the other for external speakers) to verify if the system's audio function is in working order.

Boot from the Diagnostic Program Diskette and select Modem Dial and Data Transfer Test from PC DOS 7.0 Startup Menu. Follow the instructions on the screen to execute modem test. If the test fails, go to 'Modem Board Checkout'.

Note: A telephone line is required for completing the modem test.

To check the Fan ASM, do the following:

For TP 390E - (2626)

1. Boot from and start PC Doctor. (See 'PC Doctor System Diagnostics' for details.)
2. Select Diagnostics .
3. Select Other Devices .
4. Select Fan .
5. Follow the instructions in the message window.

For TP 390/i Series 1700 - (2626, 2627)

1. Boot from the diagnostics diskette and start the Fan ASM Diagnostics.
2. Follow the description in the window. If the test detects the Fan ASM problem, replace it.

DIMM are available for increasing memory capacity.

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

Use the following procedure to isolate memory problems:

For TP 390E - (2626)

1. Boot from and start PC Doctor. (See 'PC Doctor System Diagnostics' for details.)
2. Select Memory Test
3. Full and/or Memory Test
4. Quick .
5. Follow the instructions in the message window.

For TP 390/i Series 1700 - (2626, 2627)

1. Boot from the diagnostics diskette and start the PQA program  (please refer to 'PQA System Diagnostics' ).
2. Go to Memory in the test items.
3. Press F2 in the test items.
4. Follow the instructions in the message window.

Note: Make sure that the DIMM is properly installed into the connector.

A loose connection can cause an error.

Boot from the Diagnostic Program Diskette and select PCMCIA WrapCard Test from PC DOS 7.0 Startup Menu. Follow the instructions on the screen to run the PCMCIA test.

The green LED on the PC test card lights up when the PCMCIA test is running.

If the LED does not light up, check whether the card is installed correctly by reseating the card. If it still does not light up after it is reseated, try using another slot for the test. If the LED still does not turn on and the test fails, replace the FRU shown by the diagnostic error code.

Boot from the Diagnostic Program Diskette and select Running FIR Data Transfer Test from PC DOS 7.0 Startup Menu.

Follow the instructions on the screen to execute FIR test.

Boot from the Diagnostic Program Diskette and select Running USB Connect/Disconnect Test from PC DOS 7.0 Startup Menu.

Follow the instructions on the screen to execute the USB test.

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 the appropriate power supply check listed below:

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:

For TP 390E - (2626)

• The LCD backlight turns off.
• The audio amplifier turns off. (Fn+F3)

For TP 390/i Series 1700 - (2626, 2627)

• The LCD backlight turns off.
• The hard disk drive motor stops.
• The audio amplifier turns off. (Fn+F3)

Events that cause the computer to enter standby mode:

• Standby mode requested by the Fn key (Fn+F3).

The computer exits standby and resumes operation when any key is pressed.

Suspend Mode:

In suspend mode, the following occurs:

• The LCD is powered off.
• The hard disk drive is powered off.
• The CPU stops.

Events that cause the computer to enter suspend mode:

• Suspend mode requested by the Fn key (Fn+F4).
• The Lid is closed (BIOS Setup)
• The specified time has elapsed.
• Battery low occurs and hibernation conditions are insufficient. Note: When battery is low, the battery status indicator blinks orange.
• The computer is ejected from the ThinkPad Port Replicator with Advanced Etherjet Feature.
• The UltraBay FX (Combobay) switch is pressed.

Notes:

1. In the IBM BIOS Setup Utility, the computer can be set to suspend when lid is closed.
2. In the IBM BIOS Setup Utility, the computer can be set to suspend when docked.

The following events cause the computer to resume operation from suspend mode:

• The Lid is opened.
• The real time clock alarm is signaled.
• The ring indicator (RI) is signaled by a serial device or a PC Card device.
• The Fn key is pressed.
• Wake on LAN occurs.
• Power switch is pressed.

The computer also exits suspend mode when timer conditions are satisfied for entering hibernation mode.

Hibernation Mode: For Windows NT or OS/2 user:

A Windows NT or OS/2 user cannot create a hibernation file in a Windows NT or OS/2 system that uses the NTFS/HPFS format system.

If you want to use hibernation mode, you should reinstall Windows NT with a FAT format system.

Also, if boot manager is installed, the computer cannot enter hibernation mode.

Note: Before using hibernation mode, you need a hibernation file.

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.

Notes:

1. In the ThinkPad Configuration program, the computer can be set to suspend when docked.
2. The computer cannot enter hibernation mode when it is attached to the ThinkPad Port Replicator with  Advanced Etherjet Feature.

Events that cause the computer to enter hibernation mode:

• Hibernation mode requested by function key (Fn+F12).
• Timer conditions are satisfied in suspend mode when hibernate by timer is enabled.
• A critically low battery condition occurs.
• The power switch is pressed. (BIOS Setup)

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 following events cause the computer to resume operation from hibernation mode.

• The power switch is pressed.
• The real time clock alarm is signaled.
• Wake on LAN occurs.

How to Create the Hibernation Function:

Do as follows:

For TP 390E - (2626)

• Start the ThinkPad Configuration program.
• Click on the Power Management icon.
• Click on the Hibernation Options tab.
• Click on Enable Hibernation .
• Click on OK .

For TP 390/i Series 1700 - (2626, 2627)

• Turn off the computer.
• Insert the hibernation utility diskette into the diskette drive (you can create the diskette using the Diskette Factory).
• Turn on the computer.
• 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.

Checking the AC Adapter.

You are here because the computer fails only when the AC Adapter is used:

• If the power problem occurs only when the ThinkPad Port Replicator with Advanced Etherjet Feature.
• If the power-on indicator does not turn on, check the power cord of the AC Adapter for correct  continuity and installation.
• If the operational charge does not work, go to 'Checking the Operational Charging' .

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.

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

If the voltage is within the range, do the following:

• Replace the DC-DC & BATT board.
• Replace the system/planar board.
• If the problem is not corrected, go to 'Undetermined Problems' .

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 DC-DC & BATT board, then the system/planar board.

Then reinstall the Battery ASM. If the reinstalled Battery ASM is not charged, go to the next section ('Checking the Battery ASM').

Battery ASM charging will not start until the Fuel-Gauge shows that less than 95% of the total power remains, with this condition, the Battery ASM can charge to 100% of its capacity.

This protects the Battery ASM from being overcharged or having a shortened life.

Do the following:

1. Power off the computer.

2. Remove the Battery ASM and measure the voltage between battery terminals 1(+) and 7(-).

   See the following figure:

   

   Note: Signal lines, not used in these steps, are used for communications  between the system and the battery.

   • If the voltage is less than 10.6V (Li-Ion) or 9.6V (NiMH), the Battery ASM has been discharged,  recharge the Battery ASM. If the voltage is still less than 10.6V (Li-Ion) or 9.6V (NiMH), replace the  battery.
   • If the voltage is more than 10.6V (Li-Ion) or 9.6V (NiMH), measure the resistance between battery  terminals 5 and 7. The resistance must be 390 ohm (Li-Ion) or 4 to 3K ohm. If the resistance is not  correct, replace the Battery ASM. If the resistance is correct, replace the DC-DC &  BATT board then the system/planar board.

For ThinkPad 390E - (2626), see > PC Doctor System Diagnostics

For ThinkPad 390/i Series 1700 - (2626, 2627)

The Diagnostic Program Diskette contains the following seven programs:

• PQA System Diagnostics

• Audio Resource and Speaker-out Test
• PCMCIA WrapCard Test
• Modem Dial and Data Transfer Test
• FIR Data Transfer Test
• USB Connect/Disconnect Test
• Fan Diagnostics

PQA System Diagnostics - TP 390/i Series 1700

  Attention Before running the PQA Diagnostic Program, make sure that the write enable tab of the Diagnostic Program Diskette is set to enable.

Note: Some test items require tools as shown below:

• FDD: Erasable 2HD diskette
• Parallel: Wrap plug (P/N 72X8546)
• Serial: Wrap plug (P/N 72X8546)
• PCMCIA: PC test card (P/N 35G4703)
• CD-ROM: Any data and audio CDs
• Diagnostics Diskette (P/N 10L9942)
• CE Utility Diskette (P/N 10L9947)

Boot from the Diagnostic Program Diskette and select PQA System Diagnostics Program from PC DOS 7.0 Startup Menu.

The PQA main menu appears on the screen.

Press the left and right arrow keys to move around the main menu.

Press Enter to enable the selected option.

The main options are Diag, Result, SysInfo, Option and Exit.

The Diag option lets you select testing items and testing times.

The following screen appears when you select Diag from the main menu.

This screen allows you to specify the number of tests to perform.

The options are as follows:

• Manual Test performs a single test and manually checks the selected test items in sequence.
• Auto Test performs multiple tests and auto-checks the selected test items in sequence.

The screen below appears if you select Auto Test.

Specify the desired number of tests and press Enter.

After you specify the number of tests to perform, the screen shows a list of test items (see below).

Press the up and down arrow keys to move the highlight bar from one item to another.

Press Space to enable or disable the item. The > mark indicates that there are available sub-options. Press Enter to view the available sub-options of each selected item.

Press Esc to close the submenu.

The right corner screen information gives you the available function keys and the specified test number.

• Space enables/disables the item.
• Esc exits the program.
• F1 accesses help.
• F2 tests the selected item(s).
• Enter opens the available suboptions.
• Test Times show the number of tests to perform.

PQA Diagnostic Program Error Codes and Messages

The system is equipped with sensors to protect against system overheating.

By setting the video controller and processor thermal thresholds, the system can turn on the cooling Fan ASM or shut down automatically when temperatures reach the defined threshold parameters.

Systems experiencing frequent auto sensor shutdown may need to reset the thermal sensor threshold (refer to 'Setting the Thermal Sensor'') and execute the fan test to ensure the cooling Fan ASM is operating normally.

Follow the steps below to use the Fan Diagnostics program:

1. Boot from the Diagnostics Program Diskette.
2. Select Fan Diagnostics from PC DOS 7.0 Startup menu.
3. Follow the instructions on the screen to execute the fan diagnostics.

Note: If the test fails, try reseating the Fan ASM connector or replacing the Fan ASM.

Running the Diagnostics - TP 390E - 2626

PC Doctor for DOS is used to perform diagnostics on the ThinkPad 390E

Note: Some test items require tools as shown below:

• FDD: Erasable 2HD diskette
• Parallel: Wrap plug (P/N 72X8546)
• Serial: Wrap plug (P/N 72X8546)
• PCMCIA: PC test card (P/N 35G4703)
• CD-ROM: Any data and audio CDs
• ThinkPad 390E PC Doctor for DOS Diskettes 1 and 2 (available from the website)
• ThinkPad 390E CE Utility Diskette (available from the website)

To run PC Doctor:

1. Shutdown the computer.
2. Insert the PC Doctor for DOS diskette #1 into the diskette drive.
3. Turn on the computer.
4. Select the correct model name and test type:
   • Option 1: TP-390E without audio
   • Option 2: TP-390E with audio
   and press Enter
5. When prompted, remove the diskette from the diskette drive, then insert the PC Doctor for DOS diskette #2 into the diskette drive and press any key.

   The PC Doctor for DOS diagnostics program screen appears.

To use PC Doctor:

1. Press the left and right arrow keys to move around the main menu.

Press Enter to enable the highlighted option. The main options are:

• Diagnostics
• Interactive Tests
• Hardware Info
• Utility
• Quit

• Press the up and down arrow keys to move in a selected menu.

  Press Enter to enable the highlighted option.

Note: You can press F1 for help.

The Diagnostics and Interactive Tests menus contain test items you perform on the computer.

After performing a test, press F3 to view the test result log for detailed information.

See PC Doctor Diagnostics Error Codes and Messages

• Numeric Error Codes

• LCD-Related Symptoms
• Keyboard-Related Symptoms
• Indicator-Related Symptoms
• Power-Related Symptoms
• PC Card (PCMCIA)-Related Symptoms
• Speaker-Related Symptoms
• Power Management-Related Symptoms
• Peripheral-Device-Related Symptom

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 replacement does not solve the problem, put the original part back in the computer. Do not replace a non-defective FRU.

This index can also be used to help you decide the next possible FRUs to be replaced 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'.

Note: For IBM devices not supported by diagnostic codes in this ThinkPad computer, see the manual for that device.

You are here because the diagnostic tests did not identify which adapter or device failed, which installed devices are incorrect, whether a short circuit is suspected, or whether the system is inoperative.

Follow these procedures to isolate the failing FRU (do not isolate nondefective FRUs). Verify that the power supply being used at the time of the failure is operating correctly.

(See 'Power System Checkout').

1. Power off the computer.

2. Visually check them for damage. If any problems are found, replace the FRU.

3. Remove or disconnect all of the following devices:

   1. Non-IBM devices
   2. Devices attached to the ThinkPad Port Replicator with Advanced Etherjet Feature
   3. Printer, mouse, and other external devices
   4. Battery ASM
   5. Hard disk drive
   6. DIMM
   7. CD-ROM and Diskette Drive (FDD ASM) in the Combobay (UltraBay FX)
   8. PC Cards (PCMCIA)
   • Power on the computer.
   • Determine if the problem has changed.
   • If the problem does not recur, reconnect the removed devices one at a time until you find the failing FRU.
   • If the problem remains, replace the following FRUs one at a time. Do not replace a non-defective FRU.
     1. System/planar board
     2. LCD panel ASM
     3. CPU card

Peripheral-Device-Related Symptom

Note: If you cannot find a symptom or an error in this list and the problem remains, see 'Undetermined Problems'.

  Numeric Error Codes

The following is a list of the message that the BIOS can display.

Most of them occur during POST. Some of them display information about a hardware device, e.g., the amount of memory installed. Others may indicate a problem with a device, such as the way it has been configured. Following the list are explanations of the messages and remedies for reported problems.

If the system fails after you make changes in the Setup menus, reset the computer, enter Setup and install Setup defaults or correct the error.

The following table does not include userinitiated aborts, which display the error type 195.

Error Code 0-199

FRU/Action in Sequence:

• Backup battery (RTC)
• System board

Error Code 1-1 to 1-260

FRU/Action in Sequence:

• System board

Error Code 1-286 to 1-300

FRU/Action in Sequence:

• Check BIOS setting
• Backup battery (RTC)
• System board

Error Code 5-16 to 15-36

FRU/Action in Sequence:

• System board

Error Code 18-1 to 18-27

FRU/Action in Sequence:

• PCMCIA holder
• System board

Error Code 20-1 to 71-41

FRU/Action in Sequence:

• System board

Error Code 75-1

FRU/Action in Sequence:

• DC-DC & BATT board ASM
• System board

Error Code 89-250 to 89-294

FRU/Action in Sequence:

• Reload BIOS default setting
• CPU card
• System board

Error Code 170-1 to 175-198

FRU/Action in Sequence:

• System board

Error Code 175-199

FRU/Action in Sequence:

• Fan ASM
• System board

Error Code 175-250 to 185-262

FRU/Action in Sequence:

• System board

Error Code 201-1 to 201-198

FRU/Action in Sequence:

• DIMM
• System board

Error Code 202-1 to 202-18

FRU/Action in Sequence:

• DIMM
• System board

Error Code 206-16 to 206-290

FRU/Action in Sequence:

• Reseat diskette drive cable
• Diskette drive (FDD ASM)
• System board

Error Code 215-1 to 215-254

FRU/Action in Sequence:

• Reseat CD-ROM cable
• CD-ROM drive
• System board

Error Code 217-14 to 217-262

FRU/Action in Sequence:

• Reload BIOS default setting
• Hard disk connector
• Hard disk drive

Error Code 301-250 to 301-266

FRU/Action in Sequence:

• Reseat keyboard connector
• Keyboard
• System board

Error Code 304-1 to 304-199

FRU/Action in Sequence:

• Battery pack
• DC-DC & BATT board ASM
• System board

Error Code 415-1 to 415-250

FRU/Action in Sequence:

• Reseat Modem card
• Modem card
• System board

Intermittent system hang problems can be caused by a variety of reasons that have nothing to do with a hardware defect, such as cosmic radiation, electronic discharge, or software errors.

FRU replacement should be considered only when a recurring problem exists.

When analyzing an intermittent problem, do the following:

1. Run the advanced diagnostic test for the planar board in loop mode at least 10 times.
2. If no error is detected, do not replace any FRUs.
3. If any error is detected, replace the FRU shown by the FRU code..  Rerun the test to verify that no more errors exist.

This section contains information about removals and replacements.

• Do not damage any parts. Only certified and trained personnel should service the computer.

• The arrows in this section show the direction of movement to remove a FRU, or to turn a  screw to release the FRU. The arrows are marked in numeric order, in square callout,  to show the correct sequence of removal.

  • When other FRUs must be removed before the failing FRU is removed, they are  listed at the top of the page.

  • To replace a FRU, reverse the removal procedure and follow any notes that pertain to replacement.

    • When replacing a FRU, use the correct screw size, as shown in the procedures.

  Safety Notice 1:

Before the computer is powered on after FRU replacement, make sure all screws, springs, or other small parts are in place and are not left loose inside the computer.

Verify this by shaking the computer and listening for rattling sounds. Metallic parts or metal flakes can cause electrical short circuit.

Safety Notice 4:

The lithium battery can cause a fire, explosion, or severe burn.

Do not recharge it, remove its polarized connector, disassemble it, heat it above 100°C (212 °F), incinerate it, or expose its cell contents to water.

Dispose of the battery as required by local ordinances or regulations.

Use only the battery in the appropriate parts listing.

Use of an incorrect battery can result in ignition or explosion of the battery.

Safety Notice 8:

Before removing any FRU, power-off the computer, unplug all power cords from electrical outlets, remove the Battery ASM, and then disconnect any interconnecting cables.

An electrostatic discharge (ESD) strap (P/N 6405959) must be used to establish personal grounding.

---

Back to

Review the following procedures before replacing any FRU.

LCD FRU Replacement Notice: The TFT LCD for the notebook computer contains over 2,359,296 thinfilm 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.

Replacing the System Board

When you replace the system board, restore the system unit serial number using the VPD Data Utility and reassign the UUID using the Flash UUID Utility in the ThinkPad 390/i Series 1700 CE Utility Diskette.

Note: Do not power off the computer while restoring the VPD.

Screw Notices: When you service this machine, do the following:

• Keep the screw kit (P/N 12J0808) in your tool bag.
• Always use new screws. Plastic screws cannot be reused.
• Use a torque screwdriver if possible.

  ThinkPad/WorkPad - SCREW KIT FRUs

A new range ofFRU Screw Kits have been released for various Thinkpad/WorkPad Models.These new Screw Kits contain *Nylock screws where the thread of the screws have been coated with Nylon to ensure that the appropriate screw torque is maintained for the life of the product.

• They maintain tight connections.
• They do not easily come loose, even with shock or vibration.
• They need additional force to tighten.
• The should be used only once .

Do the following when you service one of the below listed machines:

• Keep the screw kit in your tool bag.
• Always use new screws .
• Use a torque screwdriver if available. (see below 'Screw Tightening Information')

The following screw FRU part numbers have been made available for servicers.

Bulk, kit, and individual screw FRUs are listed.

Use the appropriate FRU P/N that correspond to your usage of screw FRUs.

Screw Tightening Information

Loose screws can cause reliability problems. The IBM ThinkPad/WorkPad computer addresses this problem with nylon-coated 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 plastic part.

Torque screw-drivers can be ordered from:

Techni-Tool
5 Apollo Road
Box 368
Plymouth Meeting
PA 19462
USA
Phone : Sales 1-610-941-2400
Fax : 1-610-828-5623
http://www.techni-tool.com

ThinkPad 390/i Series 1700 2626, 2627

ThinkPad 390E 2626

NOTE: You can download the CE Utility Program Diskette from the IBM webside.

  Setting the LCD Panel ID

There is an EEPROM in the inverter which stores its supported LCD type ID code.

If you replace a LCD with one of a different brand or use a new inverter, the ID information in the inverter EEPROM should be updated.

Follow the steps below to set the LCD Panel ID:

1. Boot from the Utility Program Diskette.

2. Select LCD Panel ID Utility from PC DOS 7.0 Startup Menu.

3. Follow the instructions on the screen to read the current or to set a new LCD Panel ID code.

   Note: When you set a new LCD Panel ID and the new LCD is not yet enabled  (to function), connect an external CRT to see the program execution process.

     Attention: Make sure the new ID code you choose  corresponds to the LCD brand and type.

   If you write a wrong ID into the inverter, just reboot and re-execute the program  and input the correct ID code.

4. Restart the computer - the new LCD should work normally.

Note:. If the LCD cannot display after changing the ID code, make sure you write the correct ID code or try reconnecting the LCD FPC cable connectors.

Setting the Thermal Sensor

The system is equipped with sensors to protect against system overheating.

By setting the system and processor thermal thresholds, the system can turn on the cooling Fan ASM or shut down automatically when the temperature reaches the defined threshold parameters.

System experiencing frequent auto sensor shutdown may need to reset the thermal sensor threshold and execute the Fan ASM test to ensure the normal operation of the cooling Fan ASM

(For TP 390/i Series 1700 - refer to 'Fan Diagnostics', for TP 390E - refer to 'Fan ASM Checkout').

Follow the steps below to set the thermal threshold:

1. Boot from the Utility Program Diskette.
2. Select Thermal Sensor Utility from PC DOS 7.0 Startup menu, then press F4 .

For TP 390E - Writing the RFID Data

The EEPROM on the system board contains the system unit serial number and the system board serial number.

When you replace the system board, restore the system unit serial number using the RFID Utility in the ThinkPad CE Utility Diskette.

The serial number label is attached to the computer.

This utility allows you to

• add S/N data to the EEPROM (option 1)
• read S/N data from the EEPROM (option 2)
• delete S/N data from the EEPROM (option 3)

Follow the instructions on the screen.

For TP 390/i Series 1700 - Writing the VPD Data

The EEPROM on the planar board contains the Vital Product Data (VPD) - that is, a system unit serial number and a planar board serial number.

When you replace the planar board, restore the system unit serial number using the VPD Data Utility in the ThinkPad CE Utility Diskette.

The serial number label is attached to the computer.

Edit the batch file in the diskette A:\active.bat

• VPD_BUILDID
• VPD_BOXSERIAL
• VPD_PLANARSERIAL

Flash UUID

The EEPROM on the planar board contains the Universal Unique ID (UUID) - that is, for Microsoft or Internet use.

When you replace the planar board using the Flash UUID Utility in the ThinkPad CE Utility Diskette.

The UUID utility will automatically assign the UUID via Windows.

  How to Disable the Password

There are three passwords used at a typical customer site:

The Setup password, the HDD password, and the Power On password.

• Power On password:

1. Power off the computer.
2. Remove the battery pack and AC Adapter.
3. Remove the backup battery (RTC) for 20 minutes or use a screwdriver to touch the  backup battery (RTC) for 1 second.
4. Put back the backup battery (RTC).
5. Power on the computer and wait until POST ends.
6. Verifty that the password prompt does not appear.

• Supervisor and HDD passwords:No overriding capability is provided, so it cannot be reset if forgotten.

  The Supervisor password and HDD password (HDD-1 and HDD-2) are security features that are used to  protect the system and the hard disk drive data from unauthorized access.

  If the customer forgets the Supervisor password, the planar board must must be replaced. If the customer forgets the HDD password, the hard disk drive must be replaced.

System Programs in Flash Memory.

System setup programs are stored in the flash memory.

Flash Memory Update: The flash memory update is required for the following conditions:

• New versions of system programs
• New features or options

Note: A 360KB diskette written to or formatted on a 1.2MB drive can be read reliably only on a 1.2MB drive.