Canon ColorPASS-Z20e Service Manual page 7

8. Follow standard ESD (electrostatic discharge) precautions while working on the internal
components of the ColorPASS.
Static is always a concern when servicing electronic devices. It is highly unlikely that
the area around the copier and the ColorPASS 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 precau-
tions, 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 grounding
strap, 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 unpack the ColorPASS from the carton for the first time, touch a metal
area of the copier to discharge the static on your body.
• Before you remove the ColorPASS side panel and before you handle internal compo-
nents, touch a metal part of the ColorPASS.
• Leave new electronic components inside their antistatic bags until you are ready to
install them. When you remove components from an antistatic bag, place them on a
grounded antistatic surface, component-side up.
• When you remove an electronic component, place it into an antistatic bag immedi-
ately. Do not walk across a carpet or vinyl floor while carrying an unprotected board.
9. Handle printed circuit boards by their edges only, but avoid touching the contacts on the
edge of the board.
10. Never set a cup of coffee-or any liquid-on or near the ColorPASS or the copier.
COPYRIGHT© 2000 CANON INC. 2000 2000 2000 ColorPASS-Z40e/Z20e REV.0 AUG. 2000
INTRODUCTION
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