Troubleshooting; Solenoid Control - Simrad AP50 Installation Manual

7 TROUBLESHOOTING

7.1 Solenoid control

Display readout Probable fault
No rudder
response
20222410 / B
Audible and visual alarm is provided for every fault being
detected. In the event of an autopilot failure, the AP50's
numerous test features will assist you in isolating a probable
fault. Refer to the AP50 Operator Manual.
In the unlike event of a failure in the JD5X, observe the status of
the different LED's according to the table below.
For component references refer to the D9X Solid State Board,
Component layout, Figure 2-16.
Open solenoid
command lines. I.e.
LD3/LD4 are lit for
rudder commands.
Fault on J50 Power
board or open internal
connection.
I.e. LD3/LD4 are not
lit for rudder
commands.
No power to the D9X
Solid State Board.
Defective safe relay
function.
Steering gear not
operative or defective
rudder feedback.
Recommended action
− Check TB16 for correct jumper
setting.
− Check fuse F1 and F2.
− Check correct setting of S4-S7
− Check that LD5 is OFF; if ON check
correct setting of HL-jumper or look
for short circuit or steering gear
solenoid failure.
− Check that solenoid LEDs on J50
Power board are lit when commands
are given (ref. page 17).
− If OK, check internal wiring from J50
Power board (Solenoid isolated
Hi1/Hi2) to D9X TB13 1/2.
− LD1 to be lit. If not, check correct
setting of S1-S3 switch. Check for
board supply 26-40V DC between J1-
7 and J1-9 (ref. Figure 2-16).
− If LD2 is off when LD1 is on; replace
board.
− Ref. Trouble shooting section in
AP50 Operator manual.
Troubleshooting
115