ThinkPad T420 Hardware Maintenance Manual page 36

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applies to testing of the device. Using a bootable PC-Doctor for DOS CD/DVD, the system can be started
from a USB attached optical drive.
To run the test, do as follows:
1. Turn off the computer.
2. Make sure that the optical drive that is supported as a startup device is installed to the computer.
3. Turn on the computer. If the computer cannot be powered on, go to "Power system checkout" on
page 37, and check the power sources.
If an error code appears, go to "Symptom-to-FRU index" on page 47.
4. When the ThinkPad logo comes up, immediately press F12 to enter the Boot Menu.
5. Insert the PC-Doctor CD into the optical drive.
6. Press cursor keys to select ATAPI CDx (x: 0, 1, ...) and then press Enter.
7. Follow the instructions on the screen.
8. The main panel of PC-Doctor appears.
9. Select Diagnostics with the arrow keys, and press Enter.
Note: You can select an item not only with the arrow keys, but also with the TrackPoint
Instead of pressing Enter, click the left button.
A pull-down menu appears. (Its exact form depends on the model.)
Note: PC-Doctor menu does not mean the formal support device list. Some unsupported device names
may appear in the PC-Doctor menu.
Diagnostics
Interactive Tests
Run Normal Test
Run Quick Test
CPU/Coprocessor
System Memory
Systemboard
Video Adapter
Fixed Disks
Diskette Drives
Other Devices
Communication
Wireless LAN
PC-DOCTOR 2.0 Copyright 2008 PC-Doctor, Inc. All Rights Reserved.
Use the cursor keys and ESC to move in menus. Press ENTER to select.
The options on the test menu are as follows:
Diagnostics
• Run Normal Test
• Run Quick Test
• CPU/Coprocessor
• System Memory
• Systemboard
• Video Adapter
• Fixed Disks
• Diskette Drives
• Other Devices
• Communication
• Wireless LAN
Notes:
30
ThinkPad T420 and T420i Hardware Maintenance Manual
Downloaded from LpManual.com Manuals
Hardware Info
Utility
Quit
Interactive Tests
• Keyboard
• Video
• Internal Speaker
• Mouse
• Diskette
• System Load
• Optical Drive Test
• Intel WLAN Radio Test
F1=Help
®
pointer.

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