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TM
11-5820-919-40-1
7.
Unsolder  wires
from
rear
terminals
Place light switch knob (9) onto
3.
of SB switch (26).
switch  shaft.
Carefully  pull  out  switch
from
the
8.
Secure light switch knob (9) by
4.
back of the control panel.
tightening  Allen  screw  (8)  on  the,side
light  switch  knob.
Remove  MODE  switch  (24)  and  VOLUME
9.
switch  (23)  using  the  same  procedures  as
Resolder  wires  to  light  switch
5.
removing  SB  switch.
terminals, located at the rear of light
switch  (25).
LIGHT
SWITCH
(S10)
REMOVAL.
SB (S7) MODE (S8) AND VOLUME (S9)
Remove  control  panel  from  the
1.
SWITCH
REPLACEMENT.
receiver/exciter  unit  (para  5-11).
Align  SB  rotary  switch
(26)
with
1.
2.
Place  unit  so  that  control  knobs
the back of control panel.
face  upward; then  locate  light  switch
knob  (9).
Push  firmly  into  place  allowing
2.
shaft of switch to be visible from the
3.
Remove  light  switch  knob  (9)  by
front of the panel.
loosening  Allen  screw  (8)  located  on  the
side of knob (9).
Replace washer (3) and nut (4);
3.
then
tighten.
4.
Remove  threaded
retainer
(7)
from
switch  shaft.
Resolder  wires  to  terminals
at
the
4.
rear of SB rotary switch (26).
5.
Unsolder  wires  from  terminals
located at the rear of the light switch
Replace SB switch knob (6) and
5.
(25).
tighten the 2 Allen screws (5).
6.
Grasp  light  switch
(25)
and
remove
Replacement  procedures  for  MODE
6.
from
control  panel  (1).
switch and VOLUME switch are the same as
SB  switch.
CONTROL
PANEL
REASSEMBLY.
KHZ
(S1-S6)
SWITCH
REPLACEMENT.
5-27.
Procedures  for  reassembly  of  the
control  panel  A1A4  consist  of  replacing
Carefully  fold  forward  and  align
the  switches.
1.
audio  filter  assembly  (36)  and  control
panel  circuit  card  assembly  (35).
LIGHT
(S10)
SWITCH
REPLACEMENT.
Carefully
push
both
units
into
2.
place.
Working from the back side of the
1.
control  panel,  align  light  switch  (25)
Replace  connector  washers  (38)  and
with  the  light  switch  mounting  hole  and
3.
then push the switch in the hole, allow-
connector  rings  (2)  on  connectors  (28)
ing the switch shaft and threaded por-
and  tighten.
tion of the switch to be visible from
Replace  Allen  screws  (34)  in
4.
the front face of the panel.
rotary  switches  (27)  and  tighten.
Place  threaded  retainer  (7)  over
2.
Replace  control  panel
the  threaded  portion  of  switch  shaft  and
5.
on
receiver/exciter  unit.
tighten  switch  into  place.


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