Quantcast Table 4-2. Checkout/Troubleshoot the Receiver-Transmitter RT-1277/URC-92 (cont) - TM-11-5820-873-340068

 

Click here to make tpub.com your Home Page

Page Title: Table 4-2. Checkout/Troubleshoot the Receiver-Transmitter RT-1277/URC-92 (cont)
Back | Up | Next

Click here for thousands of PDF manuals

Google


Web
www.tpub.com

Home

   
Information Categories
.... Administration
Advancement
Aerographer
Automotive
Aviation
Construction
Diving
Draftsman
Engineering
Electronics
Food and Cooking
Logistics
Math
Medical
Music
Nuclear Fundamentals
Photography
Religion
   
   

 

Share on Google+Share on FacebookShare on LinkedInShare on TwitterShare on DiggShare on Stumble Upon
Back
Table 4-2. Checkout/Troubleshoot the Receiver-Transmitter RT-1277/URC-92 (cont) - TM-11-5820-873-340067
Up
TM-11-5820-873-34 Radio Set AN/URC-92 (NSN
Next
Table 4-2. Checkout/Troubleshoot the Receiver-Transmitter RT-1277/URC-92 (cont) - TM-11-5820-873-340069


TM 11-5820-873-34
Table 4-2. Checkout/Troubleshoot the Receiver-Transmitter RT-1277/URC-92--Continued
STEP
ACTION
INDICATION
NEXT STEP
265
Connect multimeter across contacts of 1A2DS2.
Multimeter indicates + 12 VDC 0.8 VDC.
Yes:replace 1A2DS2
and
go to step 13.
No: step 285
266
COUPLER STATUS FAULT indicator went out.
Yes: step 267
No: step 270
267
COUPLER STATUS TUNING indicator illuminated.
Yes: step 268
No: step 271
268
COUPLER STATUS TUNING indicator went out.
Yes: step 269
No: step 285
269
Connect multimeter across contacts of 1A2DS1.
Multimeter indicates + 12 VDC 0.8 VDC.
Yes:
replace
1A2DS1 and
go to step 13.
No: step 285
270
Check switch 1A2S2.
Switch 1A2S2 checks good.
Yes: step 285
No:  replace switch
1A2S2
271
Connect multimeter across 1A2DS3.
Multimeter indicates less than 300 ohms.
Yes: step 285
No: replace 1A2DS1
and
go to step 13.
272
Set mode switch to OFF.
Check REFL FWD POWER
REFL FWD POWER MONITOR switch 1A2S1
Yes: step 273
MONITOR switch 1A2S1.
checks good.
No:  replace switch
1A2S1.
273
Check relay 1A8K1.
Relay checks good.
Yes: step 285
No:
replace relay
1A8K1.
274
Set mode switch to OFF.
Check REFL FWD POWER
REFL FWD POWER MONITOR switch 1A2S1
Yes: step 276
MONITOR switch 1A2S1.
checks good.
No:  replace switch
1A2S1.
275
Check resistor 1A1R49.
Resistor checks good.
Yes: step 285
No: replace resistor
1A1R49.
276
Continuity check 1A8P2-17 to 1A2S1 center
Continuity checks good.
Yes: step 292
contact.
No: step 285
277
Connect multimeter between 1A6A2-E6 and ground.
Multimeter indicates + 13 VDC.
Yes: step 278
No: step 280
278
Set mode switch to OFF. Check 1A6T1 primary windings;
1A1T1 primary windings check good.
Yes: step 279
1A6TB2-7 to 1A6TB2-6
No: replace
1A6TB2-7 to 1A6TB2-5
1A6TB2-7 to 1A6TB2-4
1A6T1.
1A6TB2-7 to 1A6TB2-2
1A6TB2-7 to 1A6TB2-1
279
Continuity check the following:
Continuity checks good.
Yes: step 303
1A6TB2-7 to 1A6A2-E2
No: step 285
1A6TB2-6to 1A6A2-E1
1A6TB2-4 to 1A6A2-E5
1A6TB2-2 to 1A6A2-E8
1A6TB2-2 to 1A6A2-E3
1A6TB2-1 to 1A6A2-E4
280
Connect multimeter between 1A8J5-11 and ground.
Multimeter indicates + 13 VDC.
Yes: step 285
No: step 281
281
Check DC fuse 1A8F3.
Fuse checks good.
Yes: step 282
No:
replace fuse
1A8F3.
282
Check relay 1A8K2 for proper DC operation.
Relay checks good.
Yes: step 283
No:
replace relay
1A8K2.
283
Check components 1A8Q1, 1A8CR2, 1A8CR3, 1A3CR4,
Components check good.
Yes: step 284
1A8CR5, lA8R1, 1A8R2.
No:
replace faulty
compo-
nent.
284
Check switch 1A1S13-C front.
Switch checks good.
Yes: step 284
No: replace switch
1A1S13.
285
Repair and/or replace wiring and connectors as necessary.
---
286
Replace and/or repair Regulator Assy 1A6A1. Use conventional
---
troubleshooting methods for repair. (If 1A6F1 is blown--check
1A6Q104 ).
287
Replace and/or repair Receiver/Exciter Mother Board 1A3A5.
---
Use conventional troubleshooting methods for repair.  (If no
modulation when mic is
4-20


Privacy Statement - Press Release - Copyright Information. - Contact Us

Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business