Troubleshooting Electrical; Table 4-1. List Of Base Board Faults - Will Burt Night Scan Chief Installation, Operation & Maintenance Manual

4.5 TROUBLESHOOTING ELECTRICAL

Operating Environment
One of the most common causes of improper operation is trying to operate outside of the stated system
requirements. (See section Table 1-1for DC power requirements). A good method of checking the voltage
at the Chief is to connect a voltmeter to the wires in the junction box powering the Remote Control(s)
(pins B and C of J1 (see schematics in section 4.4). This will give a good indication of power loss across
the DC cabling. For long runs, it may be necessary to add an intermediate junction box in the DC cable so
that DC power can be applied closer to the Chief.
Fault Codes
Fault codes are presented on the LED alphanumeric display on the wireless remote control. When faults
occur, all operation ceases. Faults may only be cleared by killing power to the Chief. This may be
accomplished by momentarily pushing in the Push/Pull switch and then re-initializing. Additionally, the
fault code is also flashed by a red status LED located on the Base board. For instance, if the fault code
were 3,07, then the LED would flash three times, pause, flash seven times, pause longer, and the repeat
the flash sequence. During normal operation, the LED should flash a slow steady on/off pattern. The
codes are as follows:
4.5.1.1 Base Board
The Base board is located in the base of the mast and is assigned unit number one (1). The Base
board may generate the messages of Table 4-1:
Message
Err 1,01
Err 1,03
Revision 1

Table 4-1. List of Base Board Faults

Meaning
Mast Down The Mast Down
Magnetic Switch Magnetic Switch
Wiring Error appears to have its
complimentary
outputs wired
backwards This
switch is located on
the side of the mast.
Excessive The current drawn
actuator current by the actuator has
draw during exceeded a level of
nesting current greater that
that required for
proper nesting
Root Issue Potential Causes
This check is only
made at power-up
when the mast
thinks it is nested.
The wires on pins 5
and 6 of J3 may
need to be swapped.
The magnetic switch
not being energized
could also cause it.
Place a magnet
close to the switch to
check before
changing wiring.
Either a rigid object
is in the way of the
mast as its nesting,
or the Mast Nested
Proximity Switch is
not being activated
as the mast
approaches the
saddle. Check for
foreign objects in the
Night Scan Chief
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