Lenovo ThinkPad T520 Hardware Maintenance Manual page 38

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 turned on, go to "Power system checkout" on page 37,
and check the power sources. If an error code is displayed, go to "Symptom-to-FRU index" on page 45
for error code descriptions and troubleshooting hints.
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.
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:
• In the Keyboard test in Interactive Tests, the Fn key should be held down for at least 2 seconds; otherwise, it
cannot be sensed.
• Video Adapter test supports only the LCD display on the ThinkPad Notebook. If you have an external monitor
attached to your computer, detach it before running PC-Doctor for DOS.
• To test Digital Signature Chip, the security chip must be set to Active.
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Hardware Maintenance Manual
Interactive Tests
• Keyboard
• Video
• Internal Speaker
• Mouse
• Diskette
• System Load
• Optical Drive Test
• Intel WLAN Radio Test
®
pointer.