Raymarine Autohelm ST6000, Service Manual

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Autohelm
Autohelm Autohelm
Autohelm
SeaTalk Service Manual 16
4. Common System Problems
Problem Cause. Solution.
System displays ‘Manual’
mode instead of ‘Standby’
on power up. Early systems had poor colour
definition on terminal boards.
Blue and Green connections
to the Fluxgate are reversed.
Reverse Blue and Green
connections on Fluxgate.
System will not pick up
N.M.E.A. data from a
suitable receiver. Early systems with
software issues prior to
66E (Z083/084) and 66C
(Z082) were not fitted with
Nav software. Replace software in both
Course Computer and
Control unit with latest
versions if pre 66E or 65C
(Both software issues can
easily be checked by
pr10 and -10 degree
course change keys together
for 2 seconds.
System displays ST 7000
for 2 sec’s followed by ‘NO
LINK’.
Seatalk Bus non operational. Cabling error between
control units and Course
Computer.
System displays ‘GYRO’
mode instead of ‘STANDBY'
on power up.
Wind Anemometer connected
to pilot. Remove yellow connection
from AUX 1.
System displays maximum
rudder angle on power up
regardless of rudder
position. Early systems had poor colour
definition on terminal boards.
Blue and green connections
to the rudder reference are
reversed.
Reverse Blue and Green
connections on rudder
reference.
System displays ‘ST7000’ or
‘STANDBY’ when Auto is
engaged. Inrush currents on the power
amplifier reset either the
Control unit or the Course
Computer Microprocessor.
Add C6 (100uF capacitor) to
the power amplifier PCB.
Systems from S/N 890040 on
have this mod incorporated.