Kongsberg Simrad RA83 Instruction Manual page 132

RA83/84/85/93/94/95 Series
Operation Manual
2. No response
Is Main Fuse F1 normal
(not blown)?
Y
Is the power supply voltage
range (21.6 –
correct?
Y
Is "+5V" on J602-16
pin correct?
Y
Check if the status of LEDs on
the Main Logic PCB is as follows'
(1) DS1: ON
(2) DS2: ON
Y
Are the connections between
J11 on Processor Unit and
Operation Unit correct?
Y
93142105-02
N
Is the fuse rating correct?
Is the polarity of power
supply line correct?
N
41.6 V)
Is the voltage on J704-14
N
and 16 pins on Power
Supply PCB about 0 V
when the unit is powered?
Are the following connections
correct?
(1) J701 (Main Logic PCB)
and Power Supply PCB
(2) J704 and Operation Unit
N
N
Trouble Shooting And On Board Servicing
N
Y
N
Y
Y
N
N
Y
Main Logic PCB is faulty.
Correct the faulty connections.
Operation Unit is faulty.
Chapter 8
Replace the fuse.
Correct the polarity.
Power supply unit is
faulty.
Set ship's supply voltage
within the specified range.
Power supply PCB is
faulty.
Correct the faulty
connections.
Operation Unit is faulty.
8-5