Night Scan Chief
mast path, and
confirm that the
proximity switch is
being properly
activated.
Err 1,07
Unrecoverable
Communication
Error
The Base board has
not sent out
communications
recently
Indicates a software
problem. Notify Will-
Burt
Err 1,08
Software Fault
Internally detected
error
Indicates a software
problem. Notify Will-
Burt
Err 1,09
Initiate
Pushbutton
The Initiate input has
been closed for too
long.
Wiring Short in the
DC cable or
incorrect DIP switch
setting (S2)
Err 1,10
EEPROM Life
More than 20,000
writes have been
made to a particular
EPROM location
Will only occur when
the mast has had in
excess of 20,000
cycles which is
unlikely to happen.
Replace the base
board.
Err 1,11
Saddle Location The internal linear
actuator limit switch
has opened before
preload occurred
The saddle is too
low with respect to
the Chief base. Shim
the saddle up as
needed. Refer to
section 2.4 for
flatness
requirement.
Err 1,12
Actuator 90
°
Proximity Switch
Disagreement
The proximity switch
sensing the mast
actuator at 90
°
has
conflicting
complementary
outputs.
There may be a
wiring problem, or a
defective proximity
switch. Check the
voltages at J3 pins 1
and 3 with respect to
pin 2. These two
voltages should be
opposite of each
other as the
proximity switch is
activated and
inactivated. The
voltages should be
close to battery
voltage or close to
ground. If they are
not, replace the
actuator 90
°
proximity switch.
Refer to system
Revision 1
4-11