ThinkPad 340 / 345

Four variants side by side, compiled from a hardware survey and IBM's product records. A value spanning several columns applies to each of those variants; a dash means no source records it.

IBM model codes — 8 models of machine type 2610

Variant	Model codes
ThinkPad 340CSE	2610-23D, 2610-2CD, 2610-2ED, 2610-2JD, 2610-2YD, 2610-2ZD, 2610-DS1, 2610-J3D

The system status indicators show the current computer status in different colors (green, yellow, and orange).

The following table shows the Fn key and function key combinations and their corresponding functions.

The Fn key works independently from the operating system. The operating system obtains the status through the system management interface to control the system.

This is the Function key on the front panel of the optional TV Tuner, not the keyboard Fn key; see TV Tuner for the other controls. In the table, <- and +> stand for the Down and Up switches.

Each time you press the Function key (), one of the following messages (called On-Screen Message) appears at the top left corner of the LCD.

The changed values are automatically saved when you return to the “TV Channel” On-Screen message. The values are not saved when you power-off the TV Tuner without returning to this message.

Use the following procedure as a guide for computer problems. 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 symptom. Attempt to recreate the failure by running the diagnostic tests or retrying the same operation.

   Note: To run the diagnostics, refer to How to Run the Diagnostics.

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.

   Symptom	Go to
   Power failure. (The power indicator does not go on or stay on.)	Power Systems Checkout.
   POST does not complete. No beeps/error code are indicated.	Symptom-to-FRU Index, and then use the No Beep Symptoms table.
   POST beeps, but no error codes are displayed.	Symptom-to-FRU Index, and then use the Beep Symptoms table.
   POST detected an error and displayed numeric error codes.	Symptom-to-FRU Index, and then use the Numeric Error Codes table.
   The diagnostic test detected an error and displayed an FRU code.	FRU Codes.
   The configuration is not the same as the installed devices.	Checking the Installed Devices List.
   Other symptoms (such as LCD display problems).	Symptom-to-FRU Index, and then use the table for related symptoms.
   Symptoms cannot be recreated. (Intermittent problems.)	Use the customer reported symptoms and go to Symptom-to-FRU Index.

• External Diskette Drive Test
• External Display Self-Test
• External Keyboard/Auxiliary Input Device Checkout
• Fax/Modem Checkout
• Printer Checkout
• Port Replicator Checkout
• TrackPoint II Checkout
• TV Tuner
  • Identifying Names and Functions
  • Using the Front Panel
  • Troubleshooting

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 three flexible cables extending from the keyboard are correctly seated in the connectors on the system board.

If the keyboard cable connection is correct, run the Keyboard Test by doing the following:

1. Go to advanced diagnostic menu screen by pressing Ctrl+A in the basic diagnostic menu.
2. Press Ctrl+K; a layout of the keyboard appears on the screen.

3. Check that when each key is pressed, the key position on the keyboard layout on the screen changes to a black square.

   Notes:

   1. When a Fn key is pressed, a black square briefly appears.
   2. Press the Esc key to return to the diagnostic menu.

If the tests detect a keyboard problem, do the following one at a time to correct the problem. Do not replace a non-defective FRU.

• Reseat the three cables.
• Replace the keyboard.
• Replace the system 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 the above devices do not work, reseat the cable connector and repeat the failing operation.

If the problem does not occur again, recheck the connector.

If the problem is not corrected, replace the device, and then the system board.

If the TrackPoint II or III will not work, check the configuration in Easy-Setup by selecting Keyboard from the Config menu. If the configuration of the TrackPoint II or III is disabled, select TrackPoint to enable it.

If this does not correct the TrackPoint II or III problem, continue with the following.

The TrackPoint II or III does automatic compensations to adjust the pointer sensor. During this process, the pointer moves on the screen automatically for a short time. This self-acting pointer movement can occur when a slight, steady pressure is applied to the TrackPoint II or III pointer while the computer is powered on or while the system is running, or re-adjustment is required because the temperature has exceeded its normal operating range. This symptom does not indicate 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. Go to the Easy-Setup screen.
2. Select an item with the pointing stick.
3. Press either the left or right click button.
4. Verify that both buttons work correctly.

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

• Reseat the three keyboard cables.
• Replace the keyboard.
• Replace the system board.

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

Note: 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.

1. Do following to select the test device:

   • Select the advanced diagnostic mode and select Tool; then select the icon FDD and press the space key. A √ mark appears next to the selected icon. Insert the blank diskette when instructed.
2. Run the diskette drive test.
3. If the controller test detects an error, FRU code 10 appears. Replace the system board.
4. If the controller test runs without errors, the drive read/write tests start automatically.

5. If the drive test detects an error, FRU code 50 appears. If the diskette itself is known to be good, replace the drive.

   If no errors occur at the FDD position, the drive is not defective.

The green LED on the PC test card turns on when the PCMCIA test is running. If the LED does not turn on, check that the card is installed correctly by reseating it. If the LED still does not turn on after the card 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 in the diagnostic error code.

Use the following procedure to isolate the diskette problem to a controller, drive or diskette. A scratch, write-enabled 2HD diskette is required.

1. Select the icon FDD on the TEST MENU. By doing this, the controller test and the drive read/write test run. If the controller test detects an error, FRU code 10 appears. In this case, replace the system board.
2. If the controller test run without errors, follow the instructions on the screen and insert a scratch diskette.
3. If the drive test detects an error, FRU code 50 appears. If the diskette media are known to be good, replace the drive or the drive cable.

The following auxiliary input devices may be available for IBM ThinkPad models.

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

• If you suspect a problem with any of the auxiliary input devices (listed above), replace the device.

  If the problem is not corrected, replace the following FRUs one at a time to correct the problem.

  • Keyboard control card
  • System board

• If the computer receives an incorrect keyboard response, remove other external devices, check the keyboard connections, and recheck the keyboard responses. If the problem remains, replace the following FRUs one at a time to correct the problem.

  • Keyboard
  • Keyboard control card
  • System board
• If a 00030100 error message appears, power-off the computer and the external devices. Then power-on the computer before you power-on the external devices.

1. Make sure the printer is correctly connected and is powered-on.
2. Run the printer self-test.

If the printer self-test does not run correctly, the problem is in the printer. Refer to the printer service manual.

If the printer self-test runs correctly, do the following.

1. Verify the port settings in configuration.
2. Install a wrap plug on the port (indicated in configuration) and run the advanced diagnostic tests.

3. If the advanced diagnostic tests (with the wrap plug installed) do not detect a failure, replace the printer cable.

   If the problem is not corrected, replace the system board.

Use the following procedure to isolate a port replicator problem. A port replicator attaches to the system expansion connector at the rear of the computer.

1. Power-off the computer.
2. Remove the failing devices from the replicator.
3. Unplug the AC adapter from the replicator, if attached.
4. Remove the port replicator from the computer.
5. Reconnect the failing device directly to the computer. (If another device occupies the connector, remove it first.)
6. Go to General Checkout and follow that procedure.
7. If the advanced diagnostic device test does not find an error, suspect a problem with the port replicator or the system expansion bus.
8. Power-off the computer and reconnect the port replicator.

9. Power-on the computer and run the following advanced diagnostic tests:

   • Serial port test with the wrap plug installed on the replicator.
   • Parallel port test with the wrap plug installed on the replicator.
   • PCMCIA-2 test with the PC test card installed.
   • FDD-2 (FDD-1 if no drive is installed in the computer) drive test on the failing device.

10. If diagnostic errors appear, replace the replicator or diskette drive attachment unit.

    If the problem remains after the replacement, replace the system board.

11. If power problems appear only when using the replicator, replace the replicator.

If power shut downs occur intermittently when using PCMCIA-2 devices via a port replicator, suspect an over-current problem. Some PCMCIA devices use more power; if the maximum usage of each device occurs simultaneously, the total current will exceed the limit, thereby causing a power shut down. Isolate this problem by removing one of the devices, and use the computer under the same condition, and see whether a power shut down occurs. Do this procedure for all devices then determine the cause. Customer purchase of the larger AC adapter (50W, optional) is recommended, if it is not yet in use.

• If the TrackPoint II does not work, check the configuration. If the configuration of the TrackPoint II is set to Disabled or Off, change it to Enable or On.

  If the problem remains, continue.

  Note: TrackPoint II automatically compensates to adjust the pointer sensor. This causes the pointer to move slightly on the screen and then stop. Pointer movement might occur when a slight, steady pressure is applied to the TrackPoint II pointer when the computer is powered-on or running, or when exceeded temperature range requires re-adjustment.

• If the cursor floats or moves erratically, power-off and disconnect the mouse. Power-on the computer. If the problem goes away, replace the mouse. If the problem remains, replace the keyboard.

• For click button or pointing stick problems:

  1. Go to the Easy-Setup screen.
  2. Select an item with the pointing stick.
  3. Press either left or right click button.
  4. Verify that both buttons work correctly.

  If the pointing stick or the click button does not work, do the following.

  1. Reseat the keyboard cables.
  2. Replace the keyboard.
  3. Replace the interposer card (355x, 360x, 750x, 755x).
  4. Replace keyboard control card (720).
  5. Replace the system board.

See the following table for the available memory size of each card.

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

Use the following procedure to isolate memory problems.

Note: Make sure that the memory card is fully installed into the connector. Loose connections can cause errors.

1. Power-off the computer and remove the IC DRAM card from its slot (if installed).
2. Press and hold the F1 key; then power-on the computer. Hold the F1 key down until the Easy-Setup screen appears.
3. Select Test and press Enter.
4. Select Memory and press Enter to run the memory test on base memory. If an error appears, replace the system board.
5. Power-off the computer and reinstall the IC DRAM card; then power-on the computer. Verify the memory size; then test the memory. If an error appears, replace the IC DRAM card.

If memory problems occur intermittently, use the loop option to repeat the test. When the test detects an error, an error log is printed on the printer connected to the parallel port. See Error Log for more information.

The processing functions for the computer are performed by the system board. When a numeric code calls out the system board, use the following procedure to isolate the problem.

1. Run the system board test to verify the symptom. This test verifies the system board. If no error is detected, return to General Checkout.
2. If FRU code 10 appears, replace the system board.
3. Rerun the test to verify the fix.

If above procedure does not correct the problem, go to Undetermined Problems.

If a device is installed but the icon appears in a gray shade rather than a dark shade on the basic diagnostics screen, the device is defective. Reseat the device connectors. If the symptom remains, replace the device or the system board. If needed, adjust the contrast control to clearly distinguish the shades of the icon.

If a device that is not installed appears in a dark shade, do the following.

1. Replace the first device, such as a FDD, HDD, or PCMCIA.
2. If the problem remains, replace the system board.

PCMCIA, Parallel, and Serial icons are always displayed in dark shade, because the icons represent subsystems of the system board and not attachment of the devices.

To verify the symptom of the problem, power-on the computer using each of the power sources available as follows.

1. Remove the battery pack.
2. Connect the AC Adapter and check that power is supplied.
3. Disconnect the AC Adapter and install the charged battery pack; then check that power is supplied by battery pack.

If you suspect a power problem, see the appropriate power supply check listed below.

• Checking the AC Adapter
• Checking the Battery Pack
• Checking the Backup Battery
• Checking the Standby Battery

Two power management modes are provided by the computer to save power consumption and prolong battery power. For the details of the two modes, see the latest volume of the Hardware Maintenance Manual for ThinkPad computers.

Standby Mode: When in standby mode, the following occurs:

• The LCD backlight turns off.
• The hard disk motor stops.

Suspend Mode: When in suspend mode, the following occurs:

• The LCD power is powered-off.
• The hard disk is powered-off.
• The CPU is stopped.

1. Power-off the computer and unplug the AC Adapter from the computer.
2. Remove the backup battery.

3. Measure the voltage of the backup battery. See the following figure.

   

   Wire	Voltage (V dc)
   Red	+2.9 to +3.3
   Black	Ground

   • If the voltage is correct, replace the system board.
   • If the voltage is not correct, the backup battery has been discharged. Replace the backup battery.
   • If the backup battery discharges quickly after replacement, replace the system board.

1. Power-off the computer.

2. Remove the battery pack and measure the voltage between battery terminals 1 (+) and 4 (-). See the following figure.

   

   Terminal	Voltage (V dc) / Signal
   	340 (NiCd)	340CSE (NiMH)
   1	+10.0 to +18.0	+10.0 to +16.0
   2	NC	0 Ω ground (-)
   3	10 kΩ between ground (-)
   4	Ground (-)

3. If the voltage is less than +10.0 V dc, the battery pack has been discharged or is defective. Recharge the battery. If the recharging does not work, go to Step 5 to check the charging circuit.

   If the voltage is still less than +10.0 V dc after the recharging, replace the battery.

4. If the voltage is more than +8.0 V dc, measure the resistance between battery terminals 3 and 4. The resistance must be 4 to 30 kilohms.

   If the resistance is not correct, replace the battery pack.

   If the resistance is correct, replace the system board.

5. To check the charging circuit, do the following. Plug in the AC Adapter with the battery pack removed; then power-on the computer.
6. Measure the charging voltage between terminals 1 (+) and 4 (-) on the computer.
7. If the voltage is less then +10.0 Vdc, replace the system board. If the voltage is more than +10.0 Vdc, the charging circuit is working correctly, replace the battery pack.

You are here because the computer fails only when the AC Adapter is used. If the power-on indicator does not turn on, check the power cord of the AC Adapter for correct continuity and installation.

1. 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.

   AC Adapter (30W, 40W):

   

   Pin	Voltage (V dc)
   1	+17.1 to +18.9
   2	Return

   AC Adapter (35W):

   

   Pin	Voltage (V dc)
   1	+15.5 to +17.0
   2	Return

   • If the voltage is correct, replace the system board. If the problem is not corrected, go to Undetermined Problems.
   • If the voltage is not correct, go to the next step.
2. Unplug the AC Adapter cable from the ac power outlet and wait five minutes or longer to allow the protection circuit 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.

Be careful not to cause a short circuit when measuring the voltage.

1. Power-off the computer and unplug the AC Adapter from the computer.
2. Remove the standby battery.

3. Measure the voltage of the standby battery.

   • If the voltage between red and black is 3.5 V dc or greater, the voltage is correct. Go to Step 9 to verify standby battery operation.
   • If the voltage is less than 3.5 V dc, go to the next step.
4. Plug the AC Adapter into the computer and power-on the computer.

5. Measure the output voltage at the connector on the system board.

   

   Pin	Voltage (V dc)
   +	+4.0
   -	Ground

   • If the voltage is less than +4.0 V dc, replace the system board.
   • If the voltage is more than +4.0 V dc, power-off the computer, replace the standby battery, and go to the next step.
6. Ensure that the AC Adapter is plugged into the computer; then power-on the computer.
7. Charging of the standby battery starts. A depleted battery needs approximately 30 minutes to be recharged to the operational voltage of +3.5 V dc.
8. Unplug the AC Adapter.

9. Verify the standby battery function by removing and installing the battery pack during suspend mode.

   Note: Removing and installing the battery pack during suspend mode should be done within one minute.

   The resume operation must start. If the resume operation does not work, switching of power from the battery pack to standby battery will not be correct. Replace the system board.

Use the ThinkPad Features program or PS2.EXE. to power-on the TV Tuner; then power-on the internal device in the diskette drive compartment.

• If you are using DOS, do one of the following:

  • Power-on the computer and type PS2 from the command prompt to start the ThinkPad Features program.

    Select Set Power Features from the ThinkPad Features menu; then put a check mark at Internal Serial Port (or Diskette Drive Compartment) under the Power for devices. If you need help, press F1 to display the help menu.

  • Type PS2 MODEM ON (or PS2 DDC ON) from the command prompt; press the Enter key to set the power ON.

• If you are using OS/2 or Microsoft Windows, do the following:

  1. Power-on the computer and start the ThinkPad Features program.
  2. Select the Power icon; then move the pointer to Internal Serial Port (or Diskette Drive Compartment) under the Power for devices and click the button to check mark it.
  3. Press the OK button.

Use either the TrackPoint II or III or the cursor move keys to interact with the tests. The Enter key works the same as selecting the OK icon to reply OK.

1. Press and hold the F1 key; then power-on the computer. Hold the F1 key down until the Easy-setup screen appears.
2. Select Test and press Enter.
3. Select a device and press Enter to run the test.
4. The test progress screen appears.
5. OK appears when the test ends without any errors.
6. Start the Advanced Diagnostic test by pressing Ctrl+A on the basic diagnostic menu screen.
7. Select Tool to install the tools.

8. Select a device, press the space key, and install the tool. Multiple devices can be selected by repeating this step.

   A √ mark appears for the selected device.

9. Select OK and press Enter if the selection is OK.
10. Select a device and press Enter to start the tests.
11. Select Test All to test all devices.

12. Select Loop Test to loop tests.

    A loop option menu appears in which a device loop or all loop can be selected. Select a device and press the space key to select a device. Repeat this step to select multiple devices. Press Enter to start the diagnostic loop. If no device is selected, all device tests are looped.

13. To exit the loop, keep pressing Ctrl+Pause until the test exits.

Do the following to run the keyboard test.

1. Go to the advanced diagnostic screen menu by pressing Ctrl+A in the Easy-Setup menu.
2. Go to the keyboard diagnostic test menu by pressing Ctrl+K.

3. Check that when each key is pressed, the key position on the keyboard layout on the screen changes to a black square.

   Note: When a Fn key is pressed, the black square briefly appears.

If the display problem occurs only when using an external display, use the following instructions to correct the problem.

If the screen is rolling, replace the display assembly. If that does not correct the problem, replace FRUs in the following order until the problem goes away:

1. Video card
2. Display adapter (any type)
3. System board
4. Bus adapter (if used)

If the screen is not rolling, run the display self-test as follows:

1. Power-off the computer and display.
2. Disconnect the display signal cable.
3. Power-on the display.
4. Set the contrast to its maximum position.
5. Set the brightness control to the center detent position.

Check for the following conditions:

• You should be able to vary the screen intensity by adjusting the contrast and brightness controls.

• The screen should be white or light gray, with a black margin (test margin) on the screen.

  Note: The location of the test margin varies with the type of display. The test margin might be on the top, bottom, or one or both sides.

If you do not see a test margin on the screen, replace the display. If there is a test margin on the screen, replace the system board.

Do the following to format the hard disk.

1. Power-off the computer.

2. Insert the ThinkPad 750Ce hardware maintenance diskette into diskette drive A and power-on the computer.

   Note: You can use this maintenance diskette for the Model 340CSE.

3. Select Format the hard disk from the main menu.
4. Select the drive from the menu.
5. Follow the instructions on the screen.

The Symptom-to-FRU Index lists the symptoms, errors, and possible causes. (It can be used to help you decide which FRUs to have available when servicing the computer.) The most likely cause is listed first.

Perform the FRU replacement or actions in the sequence shown in the “FRU/Action” column. If a FRU does not solve the problem, put the original part back in the computer and perform the next action.

Numeric error codes show the errors detected in POST or system operation. 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 for the Model 340 and 340CSE, see the manual for that device.

Numeric Error Codes

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

You are here because the diagnostic tests did not identify which adapter or device failed, installed devices are incorrect, a short circuit is suspected, or the system is inoperative. Follow the procedures below to isolate the failing FRU (do not isolate non-defective FRUs).

Verify that all attached devices are supported by the computer.

Verify that the power supply being used at the time of the failure is operating correctly. (See Power Systems Checkout.)

1. Power-off the computer.
2. Check the cables, wires, and connectors for short circuits and open circuits. 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 expansion bus connector
   3. Printer, mouse, and other external devices
   4. Battery pack
   5. IC DRAM card
   6. PC cards

   Note: Remember that removing the hard disk drive, an IC DRAM card, or any adapter or device, might cause configuration errors. Ignore error code 174.

4. Power-on the computer.
5. Determine if the problem has changed.
6. If the problem does not occur again, reconnect the removed devices one at a time until you find the failing FRU.

7. If the problem remains, replace the following FRUs one at a time. Do not replace a non-defective FRU.

   • Modem card (if installed)
   • LCD assembly
   • System board

Diagnostic errors are printed on the printer that is attached to the parallel port when the error is detected. The error is also logged in the system memory.

Do the following to display the errors.

1. End the test, if it is running.
2. Press Ctrl+A to select the advanced diagnostic mode.
3. Press Ctrl+E.
4. The error log appears.
5. To exit the screen, select the cancel icon or press Esc.

The error log is not saved when system power is powered-off.

The following table shows what to do to solve problems when the TV Tuner does not work correctly.

If an error is detected by the diagnostic tests, a four-digit FRU code is displayed. The FRU code indicates two suspected FRUs. Replace the FRU that is indicated by the two leftmost digits first, then replace the FRU indicated by the two rightmost digits. No FRU is assigned to code 00. If only one FRU is suspected, the other FRU code is filled with zeros. See the referenced page before replacing the FRU.

Note: The device ID and error codes are used to indicate the detail portion of the FRU which caused the error. If replacing a FRU does not correct a problem, see the Device ID or error code from the previous failure. If they have changed, the cause might be because the new FRU is defective or that the FRU was incorrectly installed.

If the problem remains after replacement of the FRUs, go to Undetermined Problems.

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, electrostatic discharge, or software errors. FRUs replacement should only be considered when a recurring problems exists.

When analyzing the intermittent problem, do the following:

1. Run the advanced diagnostic test for the system 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.

FRU Removals and Replacements - ThinkPad 340x/345x

This section contains information about removals and replacements.

• An electrostatic discharge (ESD) strap must be used to establish personal grounding. The system board is sensitive to, and can be damaged by, electrostatic discharge. Establish personal grounding by touching a ground point with one hand before touching these units.
• Do not damage any part. Only certificated and trained personnel should service the computer.
• The arrows in the “Removals and Replacements” section show the direction of movement to remove a FRU, or to turn a screw to release the FRU. The step number with the arrow shows the correct sequence of removal. The circled numbers are sub-steps of the main step.
• When other FRUs must be removed before removing the failing FRU, 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. See Locations for internal cable connections and arrangement information.
• When replacing a FRU, use the correct screw size as shown in the table of each section.

please READ - see Safety Notice 8, Safety Notice 3, Safety Notice 1

Remove the rear connector door by flexing it.

1040 IC DRAM Card

1050 Standby Battery

• Battery Pack (1020)

Step 2: Standby Battery

Step 3: IC DRAM Card

Step 4: Backup Battery

Note: When removing the backup battery or standby battery, use the connector extractor (P/N 39G9977).

• Battery Pack (1020)

Note: Make sure you use the correct screw. Screw Size Chart

• Battery Pack (1020)
• Top Cover (1060)

• Battery Pack (1020)
• Top Cover (1060)

• Battery Pack (1020)
• Top Cover (1060)

Use the following table for reference when replacing parts.

Note: Make sure you use the correct screw. Screw Size Chart

1110 Hard Disk Drive

• Battery Pack (1020)
• Top Cover (1060)
• Keyboard Unit (1080)

Steps 1, 2, 3, 4: Diskette Drive

Steps 5, 6: Hard Disk Drive

Use the following table for reference when replacing parts.

Note: Make sure you use the correct screw. Screw Size Chart

The removal drawings for this procedure were not captured; they are on page 68 of the Hardware Maintenance Manual Volume 2.

• Rear Connector Door (1010)
• Battery Pack (1020)
• Backup Battery (1030)
• IC DRAM Card (1040)
• Standby Battery (1050)
• Top Cover (1060)
• Indicator Card (1070)
• Keyboard Unit (1080)
• Diskette Drive (1100)
• Hard Disk Drive (1110)

Step 1, 2, 3, 4: System Board

Step 4, 5: Speaker

Note: Make sure you use the correct screws.

Use the chart to match the size and shape of the screws in the computer you are servicing.

System (Front View)

1. LCD
2. Contrast Control
3. Brightness Control
4. Status Indicator
5. Keyboard
6. LCD and Keyboard Latch
7. Click Button
8. Diskette-Eject Button
9. Diskette Drive
10. Fn Key
11. TrackPoint II/III

1. External Display Connector
2. Serial Connector
3. PCMCIA Slot
4. Serial Connector
5. Reset Pushbutton
6. Power Jack
7. External Input Device connector

1. Backup Battery
2. IC DRAM Card Slot
3. Standby Battery
4. Battery Pack

1. Internal Modem Card connector (Modem model only)
2. External Display Connector
3. Parallel Connector
4. LCD connectors
5. PCMCIA Slot
6. Indicator Card Connector
7. Reset Pushbutton
8. LCD Inverter Power Connector (340CSE)
9. Serial Connector
10. Power Jack
11. External Input Device Connector
12. Keyboard Signal Connector
13. Hard Disk Drive Connector
14. Speaker Connector (340CSE only)
15. Keyboard TrackPoint II/III Connector
16. Battery Pack Terminal
17. POP Terminal
18. Standby Battery Connector
19. IC DRAM Card Connector
20. Diskette Drive Interface
21. Backup Battery Connector

1. Resume/Suspend Switch
2. Power Switch
3. System board Interface

The reset pushbutton resets the system and forces the power to be powered-off.

Note: Use this pushbutton when the power is not completely off or the system is hung. See System Board for the location of the pushbutton.

System Programs in Flash Memory: System setup programs and diagnostic tests are stored in Flash memory.

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

• Connecting the AC Adapter, and installing the charged battery pack in the computer.
• New versions of system programs.
• New features or options are added.

To update the flash memory, do the following.

1. Get the appropriate diskette which contains the update.
2. Insert the System Program Service Diskette into drive A and power-on the computer.
3. Select Update system programs from the menu.

System Unit Models 340 and 340CSE

DASD

Keyboards

Option Parts List

Numeric Keypad

Tools

Power Cords

Warning: Use only the power cord certified for your country.

Note: The 30/40W cord is 6 feet long; the 35W cord is 6 inches.

This section contains FRUs common to most IBM portable, laptop, and notebook computers.

External Diskette Drives

CD-ROM Drives

SCSI Adapters, Terminators, Cables

Rewritable Optical Drives

External Keyboard/Mouse

Enhanced Keyboards (101/102 Key)

Optional Enhanced Keyboards (101/102 Key)

Keybutton Kits (101/102 Key)

Japanese Keyboard Type 2 (106 Key, DBCS Support)

Space-Saving Keyboards (84/85 Key)

Tools and Miscellaneous

The TV Tuner Pack (hereafter called TV Tuner) is an option for watching TV programs or videos on the IBM TFT color notebook computer. The computer changes to TV reception when the removable diskette drive is replaced with the TV Tuner.

The TV screen and normal computer display are easily switched by using the Hot key on the front panel of the TV Tuner.

Identifying Names and Functions

The following figure and table show the names and functions of each part of the TV Tuner.

Using the Front Panel

The following table shows how to operate all functions of the TV Tuner with the controls on the front panel.