Handling Precautions for Electrostatic Discharge Sensitive Devices

TASK 20-15-00-910-001-A
Handling Precautions for Electrostatic Discharge Sensitive Devices

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	STRAP-WRIST

3. Job Set-up
Subtask 20-15-00-860-050-A

A. Not Applicable

4. Procedure
Subtask 20-15-00-912-050-A

A. General Handling Precautions for LRUs
(1) No special handling procedures or instructions are necessary.
(a) The LRUs have sufficient built-in protection to prevent electrostatic discharge damage.
(b) No protective electrostatic-discharge handling procedures are necessary unless the LRU housing is open.
For example, antistatic or conductive protective caps are not necessary for connectors on the LRU housing (standard caps are sufficient).
(c) The standard precautions for each LRU are specified in the AMM in the applicable Removal/Installation task.
For example, "Put blanking caps on the receptacle and on the LRU connector(s).

NOTE: Some LRUs such as the Passenger Interface and Supply Adapter (PISA), or Power Supply Unit are Printed Circuit Assemblies without housing. They are sensitive to electrostatic discharge. During maintenance operations, refer to the applicable Removal/Installation task for electrostatic discharge precautions.

Subtask 20-15-00-912-051-A

B. Handling Precautions for OBRMs
On Board Replaceable Modules (OBRMs) are not LRUs.
It is necessary to wear STRAP-WRIST wrist straps for the Installation/replacement of OBRMs.

[Rev.10 from 2021] 2026.03.31 22:59:02 UTC