TM 5-6675-318-14
Table 4-24. DIRECT/GENERAL SUPPORT TROUBLESHOOTING - Cont
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
15.
NO DISPLAY - Cont.
(b) If the voltages are correct, the problem is a defective alarm
clock board (slot D), data entry and display board (slot A),
or the front panel display board. Replace each board in turn
u n t i l t h e d i s p l a y r e t u r n s.
( c ) I f t h e v o l t a g e s a r e s t i l l i n c o r r e c t a f t e r p e r f o r m i n g s t e p a ,
above, replace the power supply (paragraph 4-20.2).
16. NO DISPLAY AND NO ALARM WHEN CODE 36 IS ENTERED.
Isolate the problem using the substitution method, with components known to
be good.
(a) Replace memory/processor board (paragraph 4-20.2).
(b) Replace memory board (paragraph 4-20.2).
( c ) R e p l a c e o s c i l l a t e r ( p a r a g r a p h 4 - 2 0 . 8 ).
17.
INCORRECT DISPLAY.
Isolate the problem by the substitution method using boards known to be good.
(a) Replace memory board (paragraph 4-20.2).
(b) Replace memory/processor board (paragraph 4-20.2).
(c) Replace data entry and display board (paragraph 4 - 20 . 2).
(d) Replace front panel display board (paragraph 4-20.4) .
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