TM 5-6675-318-14
Table 4-24.
DIRECT/GENERAL SUPPORT TROUBLESHOOTING - Cont
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
15. NO DISPLAY - Cont
Pin
1, 2, 3, 14, 15
5
6,
7
8,
9
10,
11
12,
13
17
20,
21
22,
23
24,
25
Voltages
Common
O s c i l l a t o r ( + 1 5 V )
+12 V
-12 V
-5 V
+5 V
Power Control (PWR)
Internal Battery (+14 V)
Input Power RTN
Input Power (+10.5-16 V)
( a ) I f v o l t a g e s a r e i n c o r r e c t , o n e o f t h e b o a r d s i n s l o t s A
through 6 is defective.
Remove and install each board in
turn (paragraph 4-20.2) and recheck the voltages while the
board is removed.
The defective board is indicated when the
voltages are normal with that board removed. Replace the
defective board.
4-198
