Quantcast Table 5-1. Troubleshooting Procedures - continued - TM-5-6350-264-14-P-120030

 

Click here to make tpub.com your Home Page

Page Title: Table 5-1. Troubleshooting Procedures - continued
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 5-1. Troubleshooting Procedures - continued - TM-5-6350-264-14-P-120029
Up
TM-5-6350-264-14-P-12 Receiver Data R-1861/FSS-9(V) NSN
Next
Table 5-1. Troubleshooting Procedures - continued - TM-5-6350-264-14-P-120031
TM 5-6350-264-14&P-12
NAVELEX EE 181-AA-OMI-120/E121 C-7359-60-1
TO 31S9-2FSS9-1-12
Table 5-1. Troubleshooting Procedures - Continued
Trouble
Probable cause
Corrective action
c. If meter indicates less than 0.6 vac,
f. (cont)
1. (cont)
use oscilloscope to check clock
signal on PC board A2. Remove
screws that secure Data Trans-
mitter cover and remove cover.
Set oscilloscope as follows:
volts/division
@2v
time/division
@10ms
input
@dc.
Connect scope probe to A2-TP2,
red. Connect scope ground to Trans-
mitter chassis. The scope should
display clock signal as a square-
wave of 6 1 vdc, and 85.4 to 81.3
ms (11.7 to 12.3 Hz).
d. If this indication is not correct, replace
Data Transmitter.
e. If clock signal is good use oscillo-
scope to check FSK signal on
PC board A1. Turn off switch S1
on power supply and remove screws
securing Data Transmitter to stand-
offs in CU. Carefully move Data
Transmitter so that test points on
PC board A1 can be reached. Turn
on switch S1. Set oscilloscope
as follows:
volts/division
@2v
time/division
@0.1ms
input
@dc.
Connect scope probe to A1-TP7
(violet) and scope ground to Trans-
mitter chassis. Ground A1-TP5,
green, by connecting a jumper
5-13

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

Integrated Publishing, Inc.