TM 11-5821-333-30
2-23. OPERATIONAL CHECK. Continued
ACTION
RESPONSE
Step 19. IFM CONTROL TEST. Continued
c. Set uut switch:
IFM RF PWR
NORM
d. Set uut switch:
IFM RF PWR
HI
e. Set uut switch:
IFM RF PWR
OFF
f. Change uut MODE switch between SC and
FH while watching LAMP 7 on test adapter.
g. Set uut switch:
MODE
SC
h. Change uut PRESET switch between 3 and
4 while watching LAMP 8 on test adapter.
i.
While watching LAMP 9 on test adapter, set
PTT(S8) to UUT.
j. Set PTT(S8) on test adapter to OFF.
Step 20. HOLDING BATTERY TEST
a. Set uut switches:
MODE
FH
PRESET
1
FUNCTION
OFF
b. Set reference rt FUNCTION switch to OFF.
c. On test adapter, set DC switch to OFF for 5
seconds and back to ON.
d. Set to TEST.
e. Set uut and reference rt FUNCTION switches
to SQ ON.
f. Press uut and reference rt .../TIME buttons
three times.
NOTE
Ref rt must have a known good
holding battery.
c.
d.
e.
f.
g.
h.
i.
j.
LAMP 5 is off; LAMP 10 is on. If not,
front panel (A1) is bad.
LAMP 5 is on; LAMP 10 is on. If not,
front panel (A1) is bad.
No response,
LAMP 7 is off for SC. LAMP 7 is on for
FH. If not go to chart 38.
No response.
LAMP 8 is on for 3. If not, go to chart
39. LAMP 8 is off for 4. If not, go to
chart 40.
LAMP 9 is off with PTT(S8) at OFF. LAMP
9 is on with PTT(S8) at UUT. If not, go to
chart 41.
No response.
a. No response.
b. No response.
c. No response.
d. Response:
e. Response:
If not, go to chart 42.
f. Time displays on uut and reference rt are
equal within 2 seconds, If not, control
module (A2) is bad.
2-35
