AR-PE2 (serv.man6). AR-PE2 EFI Service Manual. - Sharp Copying Equipment Service Manual (repair manual). Page 11

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xi
Precautions
 
Static is always a concern when servicing electronic devices. It is highly unlikely that the 
area around the copier is static-free. Carpeting, leather-soled shoes, synthetic clothing 
fibers, silks, and plastics may generate a static charge of more than 10,000 volts. Static 
discharge is capable of destroying the circuits etched in silicon microchips, or 
dramatically shortening their life span. By observing standard precautions, you may avoid 
extra service calls and save the cost of a new board.
When possible, work on a ground-connected antistatic mat. Wear an antistatic 
wristband, grounded at the same place as the antistatic mat. If that is not possible:
• Attach a grounding strap to your wrist. Attach the other end to a good ground.
• When you remove an electronic component, place it into an antistatic bag 
immediately. Do not walk across a carpet or vinyl floor while carrying an unprotected 
board.
• Leave new electronic components inside their antistatic bags until you are ready to 
install them. 
• When you unpack the electronic components, touch a metal area of the copier to 
discharge the static on your body. Place the components on a grounded antistatic 
surface, component-side up.
 
4.
Avoid flexing a printed circuit board, and handle it by opposing edges (not corners) only.
5.
Never set a cup of coffee—or any liquid—on or near any components or the print device.
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