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|  TM 11-5820-401-34-3/0967-LP-432-3060
5-18.
TUNER A1000 ALINEMENT. (CONT)
30-M Hz Test
1. Check AN/URM-103 frequency output on frequency counter, then disconnect from counter.
2. Set ME-30(*)/U to 3-volt scale.
3. Connect ME-30(*)/U positive lead to TP5012 (1), and negative lead to ground. (See test setup
diagram
4. Note reading on ME-30(*)/U.
5. While observing ME-30(*)/U, increase rf output level of AN/URM-103 by turning LO RF UV
control until ME-30(*)/U drops to one-half of step 3 reading.
6. Adjust C1104 (2), C1205 (3), and C1305 (4) for lowest possible ME-30(*)/U reading and
minimum noise from speaker.
52-MHz Test
7.
Set R-442/VRC MC-TUNE-KC control to 52.00 MHz.
8.
Adjust AN/URM-103 RF TUNING control to 52.00 MHz. Check on frequency counter.
9.
Set AN/URM-103 LO RF UV control for zero-rf output.
10.
Note reading on ME-30(*)/U.
11.
While observing ME-30(*)/U, increase rf output level of AN/URM-103 by turning LO RF UV
control until ME-30(*)/U drops to one-half of step 10 reading.
12. Adjust L1102 (5), L1202 (6), and L1302 (7) for lowest possibIe ME-30(*)/U reading and
minimum noise from speaker. (See test setup diagram
.)
53-MHz Test
13.
Set R-442/VRC MC-TUN E-KC control to 53.00 MHz.
14.
Adjust AN/URM-103 RF TUNING control to 53.00 MHz. Check on frequency counter.
15.
Set AN/URM-103 LO RF UV control for zero-rf output.
16.
Note reading on ME-30(*)/U.
17.
While observing ME-30(*)/U, increase rf output level of AN/URM-103 by turning LO RF UV
control until ME-30(*)/U drops to one-half of step 16 reading.
18. Adjust L1103 (8), L1203 (9), and L1303 (10) for lowest possible ME-30(*)/U reading and
minimum noise from speaker. (See test setup diagram
.)
75-MHz Test
19.
Set R-442/VRC MC-TUNE-KC control to 75.00 MHz.
20.
Adjust AN/URM-103 RF TUNING control to 75.00 MHz. Check on frequency counter.
21.
Set AN/URM-103 LO RF UV control for zero-rf output.
22.
Note reading on ME-30(*)/U.
23.
While observing ME-30(*)W, increase rf output level of AN/URM-103 by turning LO RF UV
control until ME-30(*)/U drops to one-half of step 22 reading.
24. Adjust L1101 (11), L1201 (12), and L1301 (13) for lowest possible ME-30(*)/U reading and
minimum noise from speaker. (See test setup diagram
.)
5-100
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