TM 11-6625-2709-40
Troubleshooting Chart-Continued
Probable trouble
Proper
for improper
Correction
Procedure
Step
indication
indication
f. If a break in the circuit
f. If 1.0 FREQ SELECT
f. 1.0 FREQ SELECT
2 (Cont)
is present, make resis-
(MHz) lamp A does not
(MHz) lamp A on
tance measurements to
light, either a break in
aid box.
find the break. If no
the circuit is present
break is present,
between P2-W and
troubleshoot the con-
P5-V, or the megahertz
trol unit as described
selector in the control
in TM 11-5826-226-34.
unit is defective.
g. If a break in the circuit
g. If 1.0 FREQ SELECT
g. 1.0 FREQ SELECT
is present, make resis-
(MHz) lamp D does not
(MHz) lamp D on
tance measurements to
light, either a break in
aid box.
find the break. If no
the circuit is present
break is present,
between P2-T and
troubleshoot the con-
P5-F, or the megahertz
trol unit as described
selector in the control
in TM 11-5826-226-34.
unit is defective.
h. If a break in the circuit
h. If 0.1 FREQ SELECT
h. 0.1 FREQ SELECT
is present, make resis-
(MHz) lamp B does not
(MHz) lamp B on
tance measurements to
light, either a break in
aid box.
find the break. If no
the circuit is present
break is present,
between P2-g and
troubleshoot the con-
P5-D, or the kilohertz
trol unit as described
selector in the control
unit is defective.
TM 11-5826-226-34.
i. If a break in the circuit
i. If 0.1 FREQ SELECT
i. 0.1 FREQ SELECT
is present, make resis-
(MHz) lamp E does not
(MHz) lamp E on
tance measurements to
light, either a break in
aid box.
find the break. If no
the circuit is present
break is present,
between P2-j and P5-B,
troubleshoot the con-
or the kilohertz se-
trol unit as described
lector in the control
in TM 11-5826-226-34.
unit is defective.
j. If a break in the circuit
j. If 0.01 FREQ SELECT
j. 0.01 FREQ SE-
is present, make resis-
LECT (MHz) lamp
(MHz) lamp B does not
tance measurements to
light, either a break in
B on aid box.
find the break. If no
the circuit is present
break is present,
between P2-p and
troubleshoot the con-
P5-g, or the kilohertz
selector in the control
trol unit as described
in TM 11-5826-226-34.
unit is defective.
k.
k.
Refer to figure 4-12 and
k. FLAG meter
If FLAG meter does not
make continuity checks
should indicate
indicate 250 15.0
on the circuit com-
250 15.0 micro-
microamperes, switch S6
prised of S6 and M2 to
ampere.
or FLAG meter M2 is
isolate the trouble.
defective.
l. Refer to figure 4-12 and
l. DEVIATION meter
l. If DEVIATION meter
make continuity checks
should indicate
does not indicate
75 10 micro-
75 10 microamperes
on the circuit com-
amperes to the
to the right of 0,
prised of S6 and M1 to
right of 0.
switch S6 or DEVIATION
isolate the trouble.
meter M1 is defective.
(Cont)
Change 1
2-16
