TM 11-6625-2709-40
2-8. Troubleshooting Chart - Continued
Probable trouble
for improper
Proper
Correction
indication
Indication
Procedure
Step
Same as step 53 above.
Same as step 53 above.
0.1 FREQ SELECT (MHz)
Set the megahertz and
61
lamps A and D should light.
kilohertz selectors to
0.01 FREQ SELECT (MHz)
108.85.
lamp B should light.
Same as step 53 above.
Same as step 53 above.
0.1 FREQ SELECT (MHz)
Set the megahertz and
62
lamps A and E should light.
kilohertz selectors to
GS/LOC ON lamp should
108.90.
light, TEST lamp should
light.
Same as step 53 above.
Same as step 53 above.
0.1 FREQ SELECT (MHz)
Set the megahertz and
63
lamps A and E should light.
kilohertz selectors to
0.01 FREQ SELECT (MHz)
108.95.
lamp B should light. GS/LOC
ON lamp should light. TEST
lamp should light.
NOTE
0.1 FREQ SELECT
(MHz) lamps B and
E should remain lit
in steps 64 through
81 below.
a. Troubleshoot the control unit as
a. If 1.0 FREQ SELECT (MHz)
1.0 FREQ SELECT (MHz)
Set the megahertz and
64
lamp does not light, the megahertz
described in TM 11-6625-
lamps A and E should light.
kilohertz selectors to
selector in the control unit is
226-34.
109.00.
defective.
b. If 1.0 FREQ SELECT (MHz)
b. If a break in the circuit is pres-
lamp E does not light, either a
ent, make resistance measure-
ments to find the break. If no
break in the circuit is present be-
break is present, troubleshoot
tween P7-L and P5-Q, or the
the control unit as described in
megahertz selector in the control
TM 11-6625-226-34.
unit is defective.
a. If 1.0 FREQ SELECT (MHz)
a. If a break in the circuit is pres-
1.0 FREQ SELECT (MHz)
Set the megahertz and
65
lamp B does not light either a
ent, make resistance measure-
kilohertz selectors to
lamps B and E should light.
break in the circuit is present be-
ments to find the break. If no
110.00.
break is present, troubleshoot
tween P7-H and P5-S, or the
the control unit as described in
megahertz selector in the unit is
TM 11-5826-226-34.
defective.
b. If 1.0 FREQ SELECT (MHz)
b. Troubleshoot the control unit as
lamp E does not light, the
described in TM 11-5826-
megahertz selector in the control
226-34.
unit is defective.
The megahertz selector in the control
Troubleshoot the control unit as
66
Set the megahertz and
1.0 FREQ SELECT (MHz)
unit is defective.
described in TM 11-5826-226-34.
kilohertz selectors to
lamps A and B should light.
111.00.
a. If 1.0 FREQ SELECT (MHz)
a. Troubleshoot the control unit as
67
Set the megahertz and
1.0 FREQ SELECT (MHz)
lamp A does not light, the
kilohertz selectors to
lamps A and C should light.
described in TM 11-5826-
megahertz selector in the control
226-34.
112.00.
unit is defective.
b. If 1.0 FREQ SELECT (MHz)
b. If a break in the circuit is pres-
lamp C does not light, either a
ent, make resistance measure-
break in the circuit is present be-
ments to find the break. lf no
tween P7-J and P5-P, or the
break is present troubleshoot
megahertz selector in the control
the control unit as described in
unit is defective.
TM 11-5826-226-34.
Set the megahertz and
1.0 FREQ SELECT (MHz)
The megahertz selector in the control
Troubleshoot the control unit as
68
kilohertz selectors to
lamps B and C should light.
unit is defective.
described in TM 11-5826-226-34.
113.00.
Same as step 68 above.
Set the megahertz and
1.0 FREQ SELECT (MHz)
Same as step 68 above.
69
kilohertz selectors to
lamps B and D should light.
114.00.
70
Set the megahertz and
1.0 FREQ SELECT (MHz)
Same as step 68 above.
Same as step 68 above.
kilohertz selectors to
lamps C and D should light.
115.00.
2-22.4
Change 1
