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Service Hints & Tips

Document ID: GSMH-3BUETX

TP 340 - Related Service Procedures

Applicable to: World-Wide

Related Service Procedures:
This section provides information about the following:
- ¿Status Indicators—
- ¿How to Run the Diagnostics—
- ¿Error Log—
- ¿Reset Pushbutton—
- ¿Checking the Installed Devices List—
- ¿How to Run the Low Level Format—
- ¿PC Test Card LED—
- ¿Fn Key Combinations—
- ¿How To Run the Keyboard Diagnostics—

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

How to Run the Diagnostics:
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.

Error Log:
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.

Reset Pushbutton:
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.

Checking the Installed Devices List:
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 asa 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.

How to Run the Low Level Format:
Do the following to format the hard disk.

Before Formatting the Hard Disk

Make sure that the address of the drive to be formatted is correct. This procedure will erase all information on the disk.

1. Powr-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.

PC Test Card LED:
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.

Fn Key Combinations:
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.

Fn+	Description
F1	Reserved
F2	Fuel-gauge display ON/OFF
F3	Standby mode invocation
F4	Suspend mode invocation
F5	Audio volume Down
F6	Audio volume UP
F7	LCD/CRT display switching
F8	LCD normal/reverse switching
F9	Reserved
F10	Reserved
F11 (Toggles High power, Medium, Low)	Power management mode switching
F12	Reserved

How To Run the Keyboard Diagnostics:
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.

	Search Keywords
	Hint Category	Hardware Maintenance Information
	Date Created	28-11-96
	Last Updated	06-04-98
	Revision Date	03-04-99
	Brand	IBM ThinkPad
	Product Family	ThinkPad 340
	Machine Type	2610
	Model	Various
	TypeModel
	Retain Tip (if applicable)	N/A
	Reverse Doclinks and Admin Purposes