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Service Hints & Tips

Document ID: YAST-3JSQ2M

This document is provided to IBM and our Business Partners to help sell and/or service IBM products. It is not to be distributed beyond that audience or used for any other purpose.

TP 310,315 - Maintenance Utility Program Disk

Applicable to: World-Wide

Click HERE to download the diskette.

Utility Program Disk:
Setting Thermal Sensor Threshold:
The system is equipped with sensors to protect against system overheating. By setting video controller and processor thermal thresholds, the system can turn on the cooling fan or shut down automatically when temperatures reach the defined threshold parameters.

For systems experiencing frequent auto sensor shutdown, you might need to reset the thermal sensor threshold and execute the fan test to ensure the normal operation of the cooling fan (refer to "Running Fan Diagnostics Program" on page 34 of the HMM.)

Follow the steps below to set thermal threshold:
1. Boot from the Utility Program Disk.
2. Select Thermal Sensor Utility from PC DOS 7.0 Startup Menu, then the system thermal is executed.
Setting Inverter ID:
There is an EEROM in the inverter which stores its supported LCD type ID code. If you replace the LCD with a different brand, the ID information in the inverter EEROM should be updated.

Follow the steps below to set the LCD Inverter ID:
1. Boot from the Utility Program Disk.
2. Select Inverter ID Utility from PC DOS 7.0 Startup Menu.
3. Follow the instructions on screen to read the current inverter ID code or to set the new inverter ID code.

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

Important:
Make sure the new ID code you choose corresponds with the LCD brand and type. If you select a wrong ID into the inverter, reboot and rerun the program to input the correct ID code.

4. Restart computer the new LCD should work normally.

Note:
If LCD does not display after changing the ID code, make sure you select the correct ID code, or try reseating the LCD FPC cable connectors.

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

Hotkey help.

F2

Brightness/Contrast control.

F3

LCD/CRT/Both display switching.

F4

Fuel-Gauge display ON/OFF.

F5

Audio volume control.

F6 Ctrl+Alt+F6 on the external keyboard if one is attached.

Power Management Settings and System Information screens.

F7 Ctrl+Alt+F7 on the external keyboard if one is attached.

Standby mode.

F8 Ctrl+Alt+F8 on the external keyboard if one is attached.

Hibernation mode.

Right arrow

Scale increase (used with Fn+F2, Fn+F5.)

Left arrow

Scale decrease (used with Fn+F2, Fn+F5.)

Esc

Hotkey Icon Escape.



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Hardware Maintenance Information

Date Created

08-07-97

Last Updated

12-01-99

Revision Date

12-01-2000

Brand

IBM ThinkPad

Product Family

ThinkPad 310, ThinkPad 315

Machine Type

2600

Model

Various

TypeModel

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