NEC 151944 Manuale Utente
ND-46550
(E)
CHAPTER
3
Page 13
Revision 2.0
CHAPTER 3
INSTALLATION
1.
PRECAUTION IN HANDLING
When handling cards, the installer must wear a grounded wrist strap to protect the circuit card from static
electricity, and the installer must engage in the work on a grounded conductive work surface.
electricity, and the installer must engage in the work on a grounded conductive work surface.
illustrates
the actions to take while handling circuit cards.
Figure 3-1 Static Electricity Guard
CARD FRONT
PBX
frame earth of equipment.
Connect ground wire to
FRAME GROUND SCREW
Never touch components
or soldered surface with
bare hands.
or soldered surface with
bare hands.
WRIST STRAP
• When plugging/unplugging circuit card
• When holding circuit card