TM 11-5835-241-13&P
case (Paragraph 4-3) and remove the top panel from the chassis
(Paragraph S-S) .
Apply a liberal amount of lubriplate on both sur-
faces of the pressure roller activation plate around the two elongated
Apply lubriplate to the slide surfaces of the switch
slide holes.
assembly.
CLEANING.
Cleaning the record-reproduce-erase head, the capstan, capstan
pressure roller, and other surfaces not requiring disassembly of the
equipment is normally performed by the operator (Paragraph 3-5a.
Cleaning internal parts, surfaces, air intake and exhaust screens,
etc., should be accomplished by the maintenance technician on a
scheduled routine basis and" each time the chassis is removed from the
case for maintenance or repair.
Remove loose dust and foreign material
using a soft bristled brush and an air hose.
Remove any grease or
grime from metal chassis, motor housings, and other mechanical parts
using a clean lint free cloth moistened with solvent (such as
trichlorthane) .
GENERAL REPAIR TECHNIQUES.
Several precautions must be observed when repairing printed cir-
These items can be
ruined if care is not used.
(Refer to figure 5-1)
a. REPAIRING PRINTED CIRCUIT BOARDS.
A printed circuit board is used to replace conventional wired-chassis
The board is made of in-
construction for the electronic circuitry.
sulating material plated with a conducting pattern.
When soldering,
Overheating could loosen the plating
be careful to avoid overheating.
bond and fracture the plating or it could lower the dielectric constant
If a strip
Use solder with a low melting point such as 60/40 solder.
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