5
Electrical safety
Observe the following rules when working on electrical equipment.
Important
Use only approved tools and test equipment. Some hand tools have handles covered with a soft
material that does not insulate you when working with live electrical currents.
Many customers have, near their equipment, rubber floor mats that contain small conductive
fibers to decrease electrostatic discharges. Do not use this type of mat to protect yourself from
electrical shock.
· Find the room emergency power-off switch, disconnecting switch, or electrical outlet. If an electrical outlet.
If an electrical accident occurs, you can then operate the switch or unplug the power cord quickly.
· Do not work alone under hazardous conditions or near equipment that has hazardous voltages.
· Disconnect all power before
1. Performing a mechanical inspection
2. Working near power supplies
3. Removing or installing main units
· Before you start to work on the machine, unplug the power cord. If you cannot unplug it, ask the customer
to power-off the wall box that supplies power to the machine and to lock the wall box in the off position.
· If you need to work on a machine that has exposed electrical circuits, observe the following precautions :
Ensure that another person, familiar with the power-off controls, is near you.
Caution
Another person must be there to switch off the power, if necessary.
· Use only one hand when working with powered-on electrical equipment. Keep the other hand in your
pocket or behind your back
Caution
An electrical shock can occur only when there is a complete circuit. By observing the above rule,
you may prevent a current from through your body.
· When using testers, set the controls correctly and use the approved probe leads and accessories for that
tester
Ch1. Service information
Summary of Contents for F1
Page 1: ...0 Service Manual F1 LG Electronics ...
Page 15: ...14 Ch2 Locations Rear view 1 Fan 2 Security Key Hole Kensington Lock Hole ...
Page 56: ...55 Ch5 Removing and replacing a part ...
Page 58: ...57 3 Remove the Memory Module Ch5 Removing and replacing a part ...
Page 63: ...62 Ch5 Removing and replacing a part ...
Page 65: ...64 Ch5 Removing and replacing a part ...
Page 67: ...66 3 Remove the Keyboard Ch5 Removing and replacing a part ...
Page 69: ...68 3 Remove the Button Sub Board Ch5 Removing and replacing a part ...
Page 72: ...71 4 Remove the Display Module Ch5 Removing and replacing a part ...
Page 76: ...75 5 Remove the Main Board Ch5 Removing and replacing a part ...
Page 86: ...85 8 Disconnect the LCD Cable and the Inverter Connector Ch5 Removing and replacing a part ...
Page 92: ...91 NBATM NCVRB NCVRH NHDD1 NRUBS NSCR1 ...
Page 93: ...92 NODD1 NMEM1 NLAN1 NMDM1 NFAN1 ...
Page 94: ...93 NKBD1 NCPU1 NMCP1 NSPK1 NSPK1 NMLB1 NSUBU NSETR NCAPH NCABM NCAB3 NRUBR ...
Page 95: ...94 NCSEK NANTL NANTR NBRKR NSCR2 NCAB1 ...
Page 96: ...95 NSUBB NCSEB ...
Page 97: ...96 NBRKH NCSEF NHNGL NHNGR NSETR ...
Page 98: ...97 NSETF NCSER NLCD1 NNVE1 NCABN NCABL NPLTL ...
Page 99: ...98 NBRKL NBRKL NBRKL ...