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Page Title:
REPAIR OF THERMAL MOUNTING PLATE ON HIGH-DENSITY PRINTED WIRING BOARDS. |
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11-5820-919-40-1
WARNING
If the frozen premix kit is
used, allow it to thaw at room temper-
ature prior to use.
If either of the
Adhesives are irritating to the
two-part kits is used, mix approximately
skin and eyes upon contact, and
equal quantities of Part A and Part B,
may emit harmful vapors.
Use
using a disposable aluminum cup for
only with adequate ventilation.
mixing. Mix thoroughly.
Avoid all skin and eye contact.
Use protective clothing such as
rubber gloves, apron and eye
Bond the jumper wires to the cir-
9.
Wash off immedi-
protection.
cuit board by applying a uniform coating
ately any accidentally contam-
of adhesive over the entire length of
inated skin area.
Hand washing
Do not use more adhe-
each jumper wire.
facilities and eye wash foun-
sive than necessary to completely cover
tain should be provided. Do
the jumper wires.
not take internally.
Allow the adhesive to gel for
10.
Any one of the Narmco Epoxy Adhe-
3.
1 hour minimum at room temperature.
sive Kits No. 3135 listed in table 3-2
Then bake for 1 hour minimum at a tem-
may be used as the repair adhesive. If
10 OF, or allow the
perature of 150
the frozen premix kit is used, allow it
adhesive to dry at room temperature for
to thaw at room temperature prior to
If adhesive is oven
24 hours minimum.
use.
If either of the two-part kits is
cured, allow it to cool at room temper-
used , mix small, approximately equal,
ature after removal from the oven.
quantities of Part A and Part B, using a
disposable aluminum cup for mixing. Mix
thoroughly.
REPAIR OF THERMAL MOUNTING PLATE
ON HIGH-DENSITY PRINTED WIRING BOARDS.
Thermal mounting plate on high-density
Carefully apply a thin smooth coat
4.
printed wiring boards may be repaired by
of adhesive under the thermal mounting
performing the following steps:
pad.
Do not use more" adhesive than
necessary.
Carefully clean out all the loose
1.
adhesive from the area between the
Carefully clamp the
thermal
mount-
5.
lifted thermal mounting pad and the
ing plate to the board.
printed wiring board using an orange
stick, or equivalent hand tool.
Allow the adhesive to gel for at
6.
least 1 hour at room
temperature.
WARNING
WARNING
Use Freon with good ventila-
Avoid prolonged or
tion.
repeated breathing of vapor.
Handling hot items presents a
Avoid contact with skin and
serious injury potential.
eyes.
Do not take internally.
Asbestos gloves are required.
2.
Clean the area to be repaired with
Bake the board in an oven at 150
Freon TMC solvent to remove residual
7.
O
surface
10
F, for at least 1 hour.
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