1. System Installation Requirements
1-25
TI 32P01J10-01EN
1.5.2 Countermeasures against Static Electricity
Take countermeasures against electrostatic damage when handling cards with semi-conductor
IC components, for maintenance or to change settings.
Observe the following to prevent electrostatic damage:
• When storing or carrying maintenance parts, keep them in a conductive bag (when
delivered from the factory, they are packed in such bags with labels warning about static
electricity).
• When doing maintenance work, wear a wrist strap connected to a ground wire with a
grounding resistance of 1 M ohm. Be sure to ground the wrist strap.
Grounding resistance
of 1 M ohm
Wrist strap
Conductive sheet
Connect to earth terminal
or unpainted part of frame
(grounded)
When working with a card with battery
(power supply unit) on a conductive sheet,
set the BATTERY ON/OFF switch to the OFF
position or remove the battery.
Figure Example of Use of A Wrist Strap and Conductive Sheet
• When working on cards: keep conductive sheets, grounded via a resistance of 1 M ohm, on
the work bench. Wear a grounded wrist strap. Remove electrostatic plastics from the work
bench.
• Be sure to wear a wrist strap and use a conductive sheet when handling maintenance parts.
Jan. 21, 2019-00
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