TM 11-5820-765-34
Applying protective Coating
A f t e r c o m p l e t i n g repairs, apply protective coating to all exposed areas on circuit card.
Protective coating EC1103 is toxic.
The work area must be well ventilated.
Avoid breathing the fumes.
If the coating comes in contact with skin, immediately wash the
skin with soap and water.
Use a rubber eraser to clean areas to be coated.
Prepare the protective coating mixture:
Mix 70 parts protective coating (Item No. 2, Appendix B) with 30 parts naphtha (parts
by volume) (Item No. 4, Appendix B). Stir mixture thoroughly.
Apply coating mixture to card by spraying, dipping, or brushing.
When brushing, be careful to prevent bubbles from forming.
S e t coated card aside; allow it to dry in fresh air for five hours.
Section IV. TEST PROCEDURES
3-7.
PROCEDURES
After
performing
maintenance
on
circuit
card
assembly,
perform
static
voltage
regulation
test
formance standards given on page 3-11.
3 - 8 . DYNAMIC VOLTAGE REGULATION TEST
Test Equipment and Materials
Multimeter TS-352B/U
Oscilloscope AN/USM-281A
Transformer TF-171/USM
Voltmeter AN/USM-98A
Voltmeter ME-30(*)/U
Resistor, 0.56 ohm, 1000-watt
Test switch, single-pole, 60 ampere
