TM 5-6675-318-14
Table 4-22. TROUBLESHOOTING - Cont
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
10.1.
ERROR S, SATELLITE ALERT DATA FROM TAPE IS INSUFFICIENT (Con’t)
( c ) I f a n e w e r t a p e i s n o t a v a i l a b l e , i n i t i a l i z e t h e u n i t a n d
11. NO DISPLAY.
Step 1. Check
( a)
Step 2. Check
( a)
( b)
a l l o w i t t o t r a c k a l l a v a i l a b l e s a t e l l i t e s u n t i l e n o u g h
data is gathered.
external power supply.
Replace or recharge battery, or repair or replace external
power supply.
for blown fuse.
Replace fuse.
I f m a l f u n c t i o n s t i l l e x i s t s , r e f e r t o d i r e c t / g e n e r a l s u p p o r t
maintenance.
12. NO POSITION FIX CALCULATION BUT SATELLITE SIGNAL WAS ACQUIRED.
Step 1.
Incorrect GMT entered or large error in position entered.
Enter correct GMT, latitude and longitude. Use code 20 to correct
a n y e r r o r s.
Step 2.
I n c o r r e c t d a t a r e c e i v e d f r o m s a t e l l i t e.
W a i t f o r n e x t s a t e l l i t e .
13. 2D FIX BUT N0 3D FIX.
Step 1.
Check that elevation angle is acceptable for 3D fix.
( a ) I f a n g l e w a s n o t a c c e p t a b l e , w a i t f o r n e x t s a t e l l i t e p a s s.
(b) If angle was acceptable, proceed to step 2.
Step 2.
Enter code 50.
( a } I f n o e r r o r s a r e d i s p l a y e d , w a i t f o r n e x t p a s s.
( b ) I f e r r o r 5 , 6 , 7 o r 8 i s d i s p l a y e d , r e f e r t o d i r e c t / g e n e r al
support maintenance.
4-188
Change 3
