TM 11-6625-3041-30/TO 33A1-8-908-12
2-6.
SG-1139 CHECK PROCEDURE (CONT)
q Set
controls as
Step Error
follows :
12 Generation
and
Detection
POWER . . . . . ON
TIMING.. . . ...MASTER
DATA RATE . . 576
ATACS
Keep cables con-
nected. Press
SINGLE ERROR push-
button several
times:
ERRORS display
must increase
count by one each
time SINGLE ERROR
is pressed. If step passes, proceed to step 13. Keep cables
connected.
This step checks the following:
Transmit 1 card . . . Single Error Inject
Transmit 2 card . . . Error Counter (count function)
Receive 1 card . . . . PR GEN
Error Det
Control Filter . . . . SINGLE ERROR pushbutton ERRORS display
(count function)
If ERRORS display does not increase count:
Remove LOGIC access cover (refer to TM 11-6625-3041-12) and
note which card contains a lit fault indicator. Replace that
card and repeat step 12.
If no card contains a lit fault indicator, possible cause is
(in order of probability): Receiver 1 card A5, Transmit 2
card A4, or Transmit 1 card A3. Replace, one at a time
(refer to TM 11-6625-3041-12), and repeat step 12.
If replacement card does not provide proper indication,
possible cause is Control Filter A8. Replace (refer to