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Section IV. MAINTENANCE - TM-11-5820-873-340080
Up
TM-11-5820-873-34 Radio Set AN/URC-92 (NSN
Next
Figure 4-3 Power Supply


TM 11-5820-873-34
(12) Reinstall two standoffs (3) on Regulator
(8) Extract Regulator Assembly 1A6A1 (20) from
Assembly 1A6A1 (22).
connector 1A6XA1 (18).
(9) Remove two mounting screws (11) and
(13) Position protective cover (2) in place and
washers (12 & 13) from terminal board 1A6TB1 (16)
secure with four mounting screws (1)
NOTE
(14) Reinstall transceiver bottom cover
Reposition  terminal  board  1A6TB1  for
(15) Reinstall transceiver top cover.
access to screws mounting transformer
4-10. Regulator Assembly
1A6T1.
(10) Remove three screws mounting right side
a Removal.
panel to front panel.
(1) Remove transceiver top cover
(11) Remove five screws mounting right side
(2) Remove four screws (1) from Regulator
panel to chassis assembly.
Assembly 1A6A1 protective cover (2) and remove cover.
(12) Remove three screws mounting right side
(3) Remove two standoffs (3) from Regulator
panel to rear panel.
Assembly 1A6A1 (22).
(13) Remove four screws mounting right side
(4) Remove four screws (4) and washers (5)
panel to Power Transformer 1A6T1 (6) and remove right
mounting capacitors 1A6A1C5 (9) and 1A6A1C9 (10) and
side panel
remove capacitors.
(14) Remove four screws (8) and washer (7)
(5) Remove two mounting screws (21) and
mounting Power Transformer 1A6T1 (6) to the Power
washers (19 & 20) from connector 1A6XA1 (18)
Supply 1A6.
(6) Extract Regulator Assembly 1A6A1 (22) from
(15) Record Power Transformer 1A6T1 wiring and
connector 1A6XA1 (18)
remove Power Transformer.
b Replacement
b. Replacement.
CAUTION
(1) Make proper Power Transformer wiring
Component side of Regulator Assembly
connections.
must face top of transceiver.
(2) Position Power Transformer 1A6T1 (6) in
place and install with four mounting screws (8) and
(1) Reinstall Regulator Assembly 1A6A1 (22) into
washers (7) through Power Supply 1A6.
connector 1A6XA1 (18).
(3) Position right side panel in place and install
(2)  Position  rubber  support  (23)  between
with four screws to Power Transformer 1A6T1.
Regulator Assembly 1A6A1 (22) and Power Supply 1A6.
(4) Reinstall three mounting screws to front panel.
CAUTION
(5) Reinstall five mounting screws to chassis
Positive terminals of capacitors 1A6A1C5
assembly.
and 1A6A1C9 must match positive markings
(6) Reinstall three mounting screws to rear panel.
on Regulator Board.
(7) Position terminal board 1A6TB1 (14) in place
(3) Position capacitors 1A6AlC5 (9) and 1A6A1C9
and secure with two mounting screws (11) and washers
(10) and secure each with two mounting screws (4) and
(12 & 13).
washers (5) through Regulator Assembly 1A6A1 (22).
CAUTION
(4) Reinstall two mounting screws (21) and
Components side of Regulator Assembly
washers (19 & 20) in connector 1A6XA1 (18).
must face top of transceiver
(5) Reinstall two standoffs (3) on Regulator
(8) Reinstall Regulator Assembly 1A6A1 (22) into
Assembly 1A6A1 (22).
connector 1A6XA1 (18).
(6)  Position  Regulator  Assembly  1A6A1
(9)  Position  rubber  support  (23)  between
protective cover (2) and secure with four screws (1).
Regulator Assembly 1A6A1 (22) and Power Supply 1A6.
(7) Reinstall transceiver top cover.
4-11. Receiver/Exciter Mother Board
CAUTION
a. Removal.
Positive terminals of capacitors 1A6A1C5
(1) Remove transceiver top cover.
and 1A6A1C9 must match positive markings
(2) Remove transceiver bottom cover.
on Regulator Board
(3)  Remove  four  mounting  screws  from
(10)  Position  capacitors  1A6A1C5  (9)  and
Receiver/Exciter top protective plate and remove plate.
1A6A1C9 (10) and secure with four mounting screws (4)
(4) Extract Audio 1A3A4, Sideband Generator
and washers (5) through Regulator Assembly 1A6A1 (22).
1A3A3, IF Filter 1A3A2 and VHF Mixer 1A3A1 circuit card
(11) Reinstall two mounting screws (21) and
assemblies.
washers (19 & 20) in connector 1A6XA1 (18).
(5) Extract protective card shield
(6) Remove four mounting screws and washers
4-33


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