Hardware Maintenance Manual - Lenovo B580
Page 36
... the computer unusable) • Sticky keys caused by spilling a liquid onto the keyboard • Use of an incorrect ac power adapter on laptop products The following symptoms might indicate damage caused by nonwarranted activities: • Missing parts might be a symptom of unauthorized service or modification. ...: 1. Remove the battery pack. 3. Measure the output voltage at the plug of the ac power adapter may have been subjected to Chapter 5 "Lenovo B580" on , check the power cord of a hard disk drive becomes noisy, it may different from the computer. 2. If the voltage is acceptable,...
... the computer unusable) • Sticky keys caused by spilling a liquid onto the keyboard • Use of an incorrect ac power adapter on laptop products The following symptoms might indicate damage caused by nonwarranted activities: • Missing parts might be a symptom of unauthorized service or modification. ...: 1. Remove the battery pack. 3. Measure the output voltage at the plug of the ac power adapter may have been subjected to Chapter 5 "Lenovo B580" on , check the power cord of a hard disk drive becomes noisy, it may different from the computer. 2. If the voltage is acceptable,...
