Quantcast Table 4-2. Checkout/Troubleshoot the Receiver-Transmitter RT-1277/URC-92 (cont) - TM-11-5820-873-340069

 

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-11-5820-873-340068
Up
TM-11-5820-873-34 Radio Set AN/URC-92 (NSN
Next
Antenna Coupler CU-2229/URC-92 Checkout/Troubleshoot - TM-11-5820-873-340070


TM 11-5820-873-34
Table 4-2. Checkout/Troubleshoot the Receiver-Transmitter RT-1277/URC-92--Continued
STEP
ACTION
INDICATION
NEXT STEP
keyed--check 1A3A5Q1 and associated circuitry )
288
Replace and/or repair Display CCA 1A1A3. Use conventional
---
troubleshooting methods for CCA repair.  (If one or more
segments are incorrect--check 1A1A2J1 for proper connection.)
289
Replace and/or repair Decoder CCA 1A1A2. Use conventional
---
troubleshooting methods for CCA repair.
290
Replace and/or repair Audio CCA 1A3A4. Use conventional
---
troubleshooting methods for CCA repair.
291
Replace and/or repair Speaker Driver CCA 1A1A1.  Use
---
conventional troubleshooting methods for CCA repair.
292
Replace and/or repair Filter Module Assy.
1A5.
Use
---
conventional troubleshooting methods for repair.
293
Replace and/or repair RF Power Amplifier Assy. 1A7A1. Use
---
conventional troubleshooting methods for repair.
294
Replace and/or repair Sideband Generator CCA 1A3A3.
---
Perform ALC, ACC, Carrier Null, and Balanced Modulator
adjustments.  Use conventional troubleshooting methods for
repair. (If no CW sidetone--check 1A3A2C28 and 1A3A3C31.)
295
Replace and/or repair IF Filter CCA 1A3A2. Perform 2nd IF
---
adjustment.  Use conventional troubleshooting methods for
CCA repair. (If low transmit audio and low receive sensitivity--
check diodes 1A3A2CR1 thru 1A3A2CR16).
296
Replace and/or repair Spectrum Generator CCA 1A4A1.
---
Perform 17 MHz, 20 MHz, and 21 MHz adjustments.  Use
conventional troubleshooting methods for CCA repair. (If tone
or beat note Is heard in AM receive--check 1A4A1Q3.)
297
Replace and/or repair Synthesizer Mother Board 1A4A6. Use
---
conventional troubleshooting methods for repair. (If 3rd local
oscillator blanks only every other time--check 1A4A6Q2.)
298
Replace and/or repair VHF Mixer CCA 1A3A1. Perform 1st IF
---
and IF Gain adjustments.  Use conventional troubleshooting
methods for CCA repair.  (If loss of receive or receive
sensitivity--check 1A3A1Q2 and associated circuitry.)
299
Replace and/or repair Translator CCA 1A4A3. Perform VFO,
---
21 MHz, 19.45 MHz, 81.25 MHz, 100.75 MHz Bandpass Filter,
2nd L.O., and Output Level adjustments.  Use conventional
troubleshooting methods for CCA repair.  (If no transmit or
receive--check oscillator circuit, 1A4A3Q7 and associated
components.)
300
Replace and/or repair VHF VCO CCA 1A4A5. Perform Band 0,
---
Band 1, Band 2, and 1st L.O. adjustments. Use conventional
troubleshooting methods for CCA repair. (If off frequency--
check 1A4A5Q1 and 1A4A5Q2.)
301
Replace and/or repair Low Digit Generator CCA 1A4A2.
---
Perform VCO adjustment.  Use conventional troubleshooting
methods for CCA repair.  (1 If incorrect frequency--check
1A4A2CR14 and 1A4A2U5; 2. If 1A4A2U3 has a high output--
check that all are switching between low and high, if one input is
not switching then
4-21


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

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