face. After securing ((1) below), wipe away excess
Page 27, paragraph 38. Make the following
compound. See paragraph 1d(5)(a) for details.
changes:
Page 28, paragraph 38u. After paragraph 38v.
Subparagraph p. The following note is added:
add the following note.
NOTE
NOTE
If diode CR7901 is type 1N645 (NSN 5961-
00-577-6084), replace it with type 1N4383
In some equipment (para 1d(5)(d)), there
(NSN 5961-00-756-6578) (72699); para 1d(5)
are 30 leads instead of 26 connected to
(b)).
switch S7902.
Subparagraph r. The following is added before
subparagraph (1): Before inserting diode CR7902 in
Page 29, paragraph 38x. The following sub-
its mounting hole, apply a thin evenly spread
paragraphs are added after subparagraph (2):
coating of Dow Corning No. 340 silicon sealing
(3) Measure the resistance of resistor R7908; if
(heat sink) compound (NSN 8030-00-998-3337) on
its resistance is 475 ohms, remove it and install a
the surface of the diode and the mounting hole.
402-ohm resistor (NSN 5905-00-818-5548) (para
After securing ((1) below), wipe away excess com-
id(s)(c)).
pound. See paragraph 1d(5)(a) for details.
(4) On some equipment (para 1d(5)(c)), fixed
resistors R7922 and R7923 are connected, respec-
Subparagraph t. Add the following before sub-
tively, to potentiometers R7902 and R7919 (fig.
paragraph (1): Before replacing resistor R7901 in
39.2) for positions 2 and 19, respectively, of the
position, apply a thin coating, evenly spread, of
Dow Corning No. 340 silicon heat sink compound
switch.
on the surface of the resistor and the mounting sur-
Figure 15 is superseded by a new figure 15:
7
