Furuno FS-1562 - Self Test

FM-8500
E4-17
PTT ON
TX Power>15W XMT POWER:NG
END OF PTT TEST
TEST ON
TX ON without PA
PLL Lock?
PLL Lock:NG
CH70
LOOP BACK TEST
OK?
LOOP BACK TEST
OK?
AF
LOOP BACK TEST
OK?
AF
CH70 RCVR:NG CONTROL:NG
PTT ON TEST
OK?
VHF DSC:GOOD VHF DSC:NG
XMT POWER:NG
END
PTT ON TEST
OK?
YES
YES
YES
YES
YES
NO
NO
NO NO
NO
PTT TEST
SELF TEST
FM-8500 Self test flow
In CH70 LOOP-BACK TEST, al
l
other than PA is put in transmissio
n
status and DSC signal is transmitted,
which is received at CH 70 receiver to
see if it is a right signal by analyzin
g
the signal with the control.
This test allows collective diagnosis o
f
the transmitter, CH 70 receiver an
d
control.
In AF LOOP-BACK TEST, the tes
t
described above is performed only
with the control by looping the signa
l
back within the control.
H8 CPU has in RAM the diagnostic
result for each PTT ON.
For NG, V25 CPU is notified.