(4) Anti-static dust caps and connector covers
(alternate when conductive caps and covers not
available)
(a) Plastic dust caps and connector covers that have an anti-static solution applied and they are dated.
C. Procedure - Metal Encased Units with the ESDS Placards - Removal
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S 862-063
CAUTION: MAKE SURE YOU KEEP CONTAMINATION OR UNWANTED MATERIAL AWAY FROM THE
_______ SENSITIVE DEVICE. CONTAMINATION OR UNWANTED MATERIAL NEAR THE SENSITIVE DEVICE CAN CAUSE A MALFUNCTION IN THE SENSITIVE DEVICE.
(1) Remove the system electrical power with the applicable
Removal/Installation procedure.
S 722-071
WARNING: USE A WRIST STRAP WITH A MINIMUM GROUNDING LEAD RESISTANCE OF
_______ 250 KILOHMS AND A MAXIMUM OF 1.5 MEGOHMS. USE OF A LOW RESISTANCE WRIST STRAP CAN CAUSE INJURY TO PERSONS IF A HIGH VOLTAGE SOURCE IS TOUCHED.
(2) Do these steps to do a test of the wrist strap resistance:
(a) Use an ohmmeter to make sure the wrist strap assembly has a minimum resistance of 250 kilohms and a maximumof 1.5 megohms.
CAUTION: THE GROUNDING LEAD ON THE WRIST STRAP MUST TOUCH THE SKIN
_______ TO GIVE THE PROTECTION THAT IS NECESSARY. FAILURE TO USE THE WRIST STRAP CORRECTLY CAN CAUSE DAMAGE TO THE ESDS METAL ENCASED UNIT.
(b)
Put the wrist strap on the person who will be handling the device.
(c)
Use an ohmmeter to make sure the resistance is less than 10 megohms.
S 422-077
(3)
Connect the strap to an applicable electrostatic ground jack.
S 022-026
(4)
Remove the unit with the ESDS placard from the equipment rack, the airframe, or the panel as shown in the applicable Removal/Installation procedure.
NOTE: Make sure you do not touch the pins in the electrical
____ connector. Make sure a static sensitive placard is installed adjacent to the electrical connector(s). This static sensitive placard, or an equivalent, will be shown:
CAUTION
ELECTROSTATIC SENSITIVE DEVICE. CONDUCTIVE CONNECTOR DUST COVER REQUIRED.
This placard show that the unit can be damaged by an
electrostatic discharge through the connector pins.
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S 032-027
(5) Install a conductive dust cover with a static sensitive placard on the connectors, and standard dust covers on the connectors that do not have the placard.
NOTE: The conductive dust caps and the connector covers are black
____
in color.
NOTE: The conductive dust caps and the connector covers from the
____ installed unit can be used on the removed unit.
S 862-028
(6)
Move the unit, as shown in the standard practices, with the conductive dust caps and connector covers installed.
S 862-073
(7)
Remove the strap.
TASK 20-41-02-402-029
5. ESDS Metal Encased Units - Installation Handling
________________________________________________
A. Equipment
(1)
Wrist Strap - Conductive (commercially available)
(2)
Ohmmeter
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(3) Conductive electrical dust caps and connector
covers
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