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|  TM 11-5820-401-34-3/0967-LP-432-3060
3-18. TUNER A1000 ALINEMENT. (CONT)
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.
Set AN/URM-103 LO RF UV control for zero-rf output.
9.
10.
Note reading on ME-30(*)/U.
While observing ME-30(*)/U, increase rf output level of AN/URM-103 by turning LO RF Uv
11.
control until ME-30(*)/U drops to one-half of step 10 reading.
12.
Adjust L1102 (5), L1202 (6), and L1302 (7) for lowest possible ME-30(*)/U reading and
minimum noise from speaker. (See test setup diagram
53-MHz Test
13. Set R-442/VRC MC-TUNE-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(*)/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 22 reading.
24. Adjust L1101 (10), L1201 (11), and L1301 (12) for lowest possible ME-30(*)/U reading and
minimum noise from speaker. (See test setup diagram
.)
65-MHz Test
25. Set R-442/VRC MC-TUNE-KC control to 65.00 MHz.
26. Adjust AN/URM-103 RF TUNING control to 65.00 MHz. Check on frequency counter.
27. Set AN/URM-103 LO RF UV control for zero-rf output.
28. Note reading on ME-30(*)/U.
29. 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 28 reading.
30. Adjust C1101 (13), C1201 (14), and C1301 (15), for lowest possibIe ME-30(*)/U reading,
and minimum noise from speaker. (See test setup diagram
.)
3-101
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