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Page Title:
R-1467(P)/GRC-144(V) and R-1467(P)A/-GRC-144(V) Troubleshooting Chart-continued |
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|  TM 11-5820-695-35
Item No.
Symptom
Probable trouble
Corrective actions
10 Out of color band meter
Same as item No.9 in this chart
Perform the corrective action listed
indication obtained at any
for item No. 9 in this chart.
of the component test points
(TM 11-5820-695-12)
11 Zero meter indication ob-
a.
Defective wiring on meter panel
a.
Use the R-1467/GRC-144 inter-
tained when meter selector
assembly 2A15A2.
connecting diagram (fig. 5-21)
switch is placed in any
and TS-S62 B/U to check wiring
position.
between meter selector switch
2A15A2S1 and meter 2A15A2M1.
b.
Meter 2A15A2M1 defecive
t
b.
Use the receiver meter 2A15A2M1
calibration procedure (para
c.
Meter selector switch 2A15A2S1
c.
Replace meter selector switch
defective.
2A15A2S1 (fig. 3-18).
12 Both the green and red lamps
Defective wiring between indicator
Use the R-1467/GRC-144 intercon-
in any status or alarm
and its associated lamp driver.
necting diagram (fig. 5-21) and
indicator lighted.
TS-352 B/U to isolate the
defective wiring.
13 CARR (IF) indicator lighted
a.
Defective wiring in plate assembly
a.
Turn meter selector switch on
red
2A16
meter panel assembly 2A15A2
to CARRIER (IF). If meter
indication is less than 110,
proceed to b below. Otherwise,
perform the plate assembly 2A16
checks (para 3-16c, section 8
(step c))
b.
Defective wiring or component in
b.
Turn meter selector switch on
local oscillator circuits.
meter panel assembly 2A15A2
to LOCAL OSC POWER. If
meter indication is less than 30,
refer to item No. 26 in this chart
c.
Defective wiring in plate assembly
c.
Perform the plate assembly 2A16
2A16.
checks (para 3-16c, sections
1 and 4).
d.
Coaxial cable 2W2 or 2A15W1
d.
Check coaxial cables 2W2 and
defective.
2A15W1 (fig. 3-24) by substi-
tution.
e.
Components 2FL4 or 2FL6
c.
Check components 2FL4 and 2FL6
defective.
(para 344 and S45) by
substitution.
14 SYNTH LOCK indicator
a.
Electrical equipment chassis
a.
Check electrical equipment chassis
lighted red.
2A14A10 defective.
2A14A10 by substitution
b.
Defective wiring
b.
Remove electrical frequency syn-
thesizer 2A14 (para 3-49) and
alarm monitor 2A12, and check
for continuity between pin 7 of
connector 2A15W2XA14 and 17
of connector 2A16W1XA12A (fig
6-21). Also check resistance
between pin 8 and 9 of connector
2A16W1XA12B. Resistance
should be greater than 10 ohms.
15 TRAF indicator lighted red
a.
Defective wiring in plate assembly
a.
Perform the plate assembly 2A16
2A16.
checks (para S-16c, section 7
(step d)).
b.
1.0 MHz/3.8 MHz low pass
b.
Replace 1.0 MHz/3.8 MHz low
filter 2A3 defective
pass filter 2A3(fig. 3-17),
16 Meter indication for SYNTH
a.
Defective wiring In electrical
a.
Perform the electrical equipment
meter selector switch position
equipment cabinet 2A15.
cabinet 2A15 checks (para
not in yellow band.
3-17c, section 3 (step a)).
Change 1 3-21
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