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Page Title:
OPERATIONAL CHECK. (CONT) |
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 TM 11-625-2975-12
3-9. OPERATIONAL CHECK. (CONT)
ACTION
INDICATION
FREQUENCY display should read 335.000. If
52. Enter a frequency of 335.00 MHz.
not, refer test set to higher level of
maintenance.
NOTE
The following step should cause RDL/DDM/MOD display to sequentially display .045,
.091, .175, and .400.
53. Repeatedly press STEP ∆ RDL
RDL/DDM/MOD display should sequentially
A DDM key.
read .045, .091, .175, and .400. If not,
refer test set to higher level of maintenance.
RDL/DDM/MOD display should show a contin-
54. Press and hold
key.
uous decrease. If not, refer test set to
higher level of maintenance.
55. Release
key.
RDL/DDM/MOD display should show a contin-
56. Press and hold
key.
uous increase. If not, refer test set to
higher level of maintenance.
57. Release
key.
RDL/DDM key lamp should light. If not, see
58. Press RDL/DDM key.
59. Enter .800 on DATA ENTRY keys.
RDL/DDM/MOD display should read .800. If
60. Press ENTER key.
not, refer test set to higher level of
maintenance.
U/L (150 Hz) indicator should go off and D/R
61. Press T/F U/L D/R key.
(90 Hz) indicator should light. If either or
both of these indications do not occur as
described, refer test set to higher level of
maintenance.
D/R (90 Hz) indicator should go off and U/L
62. Press STD key.
(150 Hz) indicator should light. If either or
both of these indications do not occur as
described, refer test set to higher level of
maintenance.
3-12
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