TM 11-5821-333-30
3-9. OPERATIONAL CHECK. Continued
ACTION
RESPONSE
Step 3. KEYBOARD CHECKS
a.
b.
c.
d.
e.
f.
g.
h.
i.
Set uut FUNCTION switch to SQ ON.
On uut, press FREQ and then CLR.
On uut, press FREQ and then CLR. After the
five dashes appear, press 6.
On uut, press FREQ and then CLR. After the
five dashes appear, press 6, 8.
On uut, press FREQ and then CLR. After the
five dashes appear, press 3, 1, 2, 5, 0.
On uut, press FREQ and then CLR. After the
five dashes appear, press 4, 9, 7.
On uut, press FREQ, then CLR, then
lll / TIME.
On uut, press FREQ and then CLR. After the
five dashes appear, press 3, 1, 2, 5, 0.
On uut, press STO (Sto/ENT).
a.
b.
c.
d.
e.
f.
g.
h.
i.
No response.
Response:
If not, go to chart 14.
Response:
If not, go to chart 15.
Response:
If not, go to chart 16.
Response:
If not, keyboard is bad.
Response:
if not, keyboard is bad.
Display shows number (00 to 99). If not,
keyboard is bad.
Response:
If not, keyboard is bad.
Display blinks then displays “31250”. If
not, keyboard is bad.
3-10
