Kongsberg Simrad RA83 Instruction Manual page 140

RA83/84/85/93/94/95 Series
Operation Manual
+250 V line is shorted
Pulse selection function is
faulty
Waveform on TP2
A
B
Pulse length A (ns) B (ms)
SP 100 0.5
M1 200 0.67 or 0.77
M2 550 1 or 1.25
LP 1050 2 or 2.5
Antenna does not rotate
Is the Motor Fuse F2 normal (not blown)?
Y
Can the antenna be rotated
manually?
Disconnect P4 (J4) from the
Modulator PCB. Is the fault
removed?
○
1
93142105-02
Disconnect J2
Modulator PCB. Is the fault
removed?
Y
Is the TX drive signal on
5 V
TP2 (Modulator
normal?
0 V
Is +24V present on J1-1 pin
(Modulator PCB) normal?
Y
Y
Motor is faulty.
Trouble Shooting And On Board Servicing
from the
N
Y
PCB)
N
N
Y
N
Replace
with new one.
Is the fault corrected?
Finished
Check if the following conditions
are observed:
N
1) The antenna gets caught
2) Turning gear mechanism
Internal wirings in the Antenna
N
unit or Power Supply in the
Processor unit is faulty.
Chapter 8
Internal wiring in the Antenna
unit or Processor unit is faulty.
Modulator PCB is faulty.
Modulator PCB is faulty.
Internal wiring in the Antenna
unit or Processor unit is faulty.
Modulator PCB is faulty.
the fuse
N
with a rope.
gets stuck.
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