TM 5-6675-318-14
Table 4-24. DIRECT/GENERAL SUPPORT TROUBLESHOOTING - Cont
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
6 .
ERROR 7, FAULT IN DIGITAL 400 MHz CIRCUITS.
Replace dual channel receiver board (paragraph 4-20.3).
7 .
ERROR 8, FAULT IN ANALOG 400 MHz CIRCUITS.
Replace dual channel receiver board (paragraph 4-20.3).
8. ERROR B, ERROR DETECTED IN MODEM BOARD.
Replace modem board (paragraph
9. ERROR C, FAULT IN TAPE CASSETTE SYSTEM.
4 - 2 0 . 2 ) .
Replace tape cassette transport (paragraph 4-20.1).
If malfunction persists, replace tape controller board (paragraph
4 - 2 0 . 2 ) .
10. ERROR D, FAULT IN ALARM CLOCK BOARD.
Replace alarm clock board (paragraph 4-20.3).
11.
ERROR H, INTERNAL TEMPERATURE EXCEEDED 70°C (158°F) AUTOMATIC SHUTDOWN HAS
OCCURRED.
Check fan operation.
(a) If fan does not operate, replace fan (paragraph 4-20.9).
( b ) I f f a n i s o p e r a t i n g , r e p l a c e t h e r m a l s w i t c h ( p a r a g r a p h
4 - 2 0 . 6 ) .
4-196
