Lenovo ThinkPad 770 Hardware Maintenance Manual for 770 series notebooks(Janua - Page 47
PC Card Slots Test, Universal Serial Bus (USB) Test, Looptest, Pause
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RUNNING THE DIAGNOSTICS Click on Looptest to run the tests in a repeated loop. The loop option menu appears. Click on a device; the √ mark appears beside the selected device. Repeat this step to select multiple devices. Click on OK to start the diagnostic loop. If no device is selected, all devices tests are looped. 9. To exit the loop, keep pressing Ctrl+Pause until the test exits. A beep sounds to notify that the exit interrupt is sensed by the test program. Press Esc to exit from the loop test. PC Card Slots Test The green LED on the PC test card turns on when the PC Card slot 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 by the diagnostic error code. Universal Serial Bus (USB) Test At the advanced diagnostic window, do the following: 1. Connect the USB parallel test cable to the parallel connector of the computer. 2. Connect Connector 1 of the cable to the USB connector of the computer. Note The illustration shows a ThinkPad 770 computer, but the procedure is the same for the other model. General Descriptions 41