Will Burt Night Scan Chief Series Operating Instructions Manual page 68

NIGHT SCAN CHIEF
OPERATING INSTRUCTIONS
Table 9-1 Error and Warning Codes for Base Board (Continued)
Message
1,13 RCP STOWED mag-
netic sensor - Sensor
Output Error
(Upper magnetic sensor
on Vertical)
1,14 Mast Down (lower mag-
netic sensor)
1. Sensor Output Error
2. Sensor State Error
1,15 At 90° (Actuator) - Sen-
sor State Error
1,16 Not Used
1,17 Well Closed (Vertical
with well cover) - Switch
Output Error
1,18 Well Closed (Vertical
with well cover) - Sensor
State Error
1,19 Both Near 0° and 90° -
Sensor State Error
1,20 Forced Stow has been
activated
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Meaning
Sensor outputs are bad
1. Sensor outputs bad.
They have not been
opposite for >250ms.
or
2. Mast was told to go
up, and the sensor indi-
cates it did not move
after 8 seconds (v7.2),
or 15 seconds (v7.3).
3. Sensor is not seeing
magnet when mast is
fully retracted
Checked at power up
after stowing. Sensor
outputs are O.K., but
sensor shows wrong
polarity for nested state
Not Used
Sensor outputs are bad
Switch outputs are O.K.,
but show wrong polarity
for Well Closed
Both the Nested LS and
the 90° LS have been
detected active at the
same time. This is an
invalid condition, and
indicates a problem with
one or both sensors
This fault is set when the
Forced Stow switch is
activated to assure the
system is not in normal
operation during the
forced stow operation
Root Issue
Wiring problem, defec-
tive magnetic sensor
1. There may be a wiring
problem, or a defective
magnetic sensor.
or
2. Defective magnetic
sensor, air supply inade-
quate, or external mag-
net affecting sensor.
3. Sensor not seeing
magnet - sensor needs
to be re-aligned
Board was changed or
updated while the mast
was at 90°
Not Used
D7 Green = Closed
D8 Yellow = Not Closed
Switch wiring, defective
switch, board
Both sensors indicate
proximity, one may be
bad
Forced Stow button has
been activated
Potential Cause
TP-4602001-T
DECEMBER 2020