Lenovo 1304XF8 Manual Do Utilizador

The purpose of this inspection guide is to assist you in identifying potential 

unsafe conditions. As each machine was designed and built, required safety 

items were installed to protect users and service personnel from injury. This 

guide addresses only those items. You should use good judgment to identify 

potential safety hazards according to the attachment of non-Lenovo IdeaPad 

features or options not covered by this inspection guide.

If any unsafe conditions are present, you must determine how serious the 

apparent hazard could be and whether you can continue without first correcting 

the problem. 

Consider these conditions and the safety hazards they present: 

Electrical hazards, especially primary power (primary voltage on the frame 

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can cause serious or fatal electrical shock) 
Explosive hazards, such as a damaged CRT face or a bulging capacitor

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Mechanical hazards, such as loose or missing hardware

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To determine whether there are any potential unsafe conditions, use the 

following checklist at the beginning of every service task. Begin the checks with 

the power off, and the power cord disconnected.

Checklist:
1.  Check exterior covers for damage (loose, broken, or sharp edges).
2.  Turn off the computer. Disconnect the power cord.
3.  Check the power cord for:

a.  A third-wire ground connector in good condition. Use a meter to measure 

third-wire ground continuity for 0.1 ohm or less between the external 

ground pin and the frame ground.

b.  The power cord should be the type specified in the parts list.
c.  Insulation must not be frayed or worn.

4.  Check for cracked or bulging batteries.
5.  Remove the cover.
6.  Check for any obvious non-Lenovo IdeaPad alterations. Use good judgment 

as to the safety of any non-Lenovo IdeaPad alterations.

7.  Check inside the unit for any obvious unsafe conditions, such as metal 

filings, contamination, water or other liquids, or signs of fire or smoke 

damage.

8.  Check for worn, frayed, or pinched cables.
9.  Check that the power-supply cover fasteners (screws or rivets) have not 

been removed or tampered with.