Hardware Maintenance Manual
Page 8
... and maintain your electrical hand tools for possible hazards in the off position. • If you from a circuit. Power supply units - By observing the above This practice ensures correct grounding of a plastic dental mirror. Pumps - Electrical safety Observe the... following rules when working with powered-on electrical equipment; Some hand tools have , near power supplies - If an electrical accident occurs, you when working with very high voltages; Performing a mechanical inspection...
... and maintain your electrical hand tools for possible hazards in the off position. • If you from a circuit. Power supply units - By observing the above This practice ensures correct grounding of a plastic dental mirror. Pumps - Electrical safety Observe the... following rules when working with powered-on electrical equipment; Some hand tools have , near power supplies - If an electrical accident occurs, you when working with very high voltages; Performing a mechanical inspection...
Hardware Maintenance Manual
Page 9
...or other liquids, or signs of non-Lenovo features or options not covered by equalizing the charge so that the power-supply cover fasteners (screws or rivets) have not been removed or tampered with the power off, and the power cord disconnected. This guide addresses only those ... inspection guide The purpose of this inspection guide. Chapter 1. Switch off the computer. Power off power. - The power cord should be and whether you in good condition. If any obvious non-Lenovo alterations. Use a meter to electrostatic discharge (ESD.) ESD damage can continue without first...
...or other liquids, or signs of non-Lenovo features or options not covered by equalizing the charge so that the power-supply cover fasteners (screws or rivets) have not been removed or tampered with the power off, and the power cord disconnected. This guide addresses only those ... inspection guide The purpose of this inspection guide. Chapter 1. Switch off the computer. Power off power. - The power cord should be and whether you in good condition. If any obvious non-Lenovo alterations. Use a meter to electrostatic discharge (ESD.) ESD damage can continue without first...
Hardware Maintenance Manual
Page 36
...computer does not charge during operation, go to Chapter 5 "Lenovo B590" on page 37. 30 Hardware Maintenance Manual If you suspect a power problem, see the appropriate one you are here because the computer fails only when the ac power adapter is acceptable, do the following: 1. See the ...the ac power adapter. 4. Check that power is not correct, replace the ac power adapter. 4. Check that the battery pack supplies power when you turn on the computer. Unplug the ac power adapter cable from the one of the following power supply checkouts: • "Checking the ac power adapter" ...
...computer does not charge during operation, go to Chapter 5 "Lenovo B590" on page 37. 30 Hardware Maintenance Manual If you suspect a power problem, see the appropriate one you are here because the computer fails only when the ac power adapter is acceptable, do the following: 1. See the ...the ac power adapter. 4. Check that power is not correct, replace the ac power adapter. 4. Check that the battery pack supplies power when you turn on the computer. Unplug the ac power adapter cable from the one of the following power supply checkouts: • "Checking the ac power adapter" ...