Garmin G1000 Line Maintenance Manual page 154

Uncontrolled if Printed
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4.7.7.1 GWX 75 Troubleshooting Table
Table 4-10 lists the various GWX Processor fault indication descriptions and corrective
actions.
NOTE
The fault indications are reset if PFD1 is transitioned from normal mode to
configuration mode. It will return if the fault is persistent. It may not return if
the fault is intermittent. The fault indications also reset with a power cycle
to the unit. Note: transitioning the MFD to configuration mode will not reset
the fault indications.
NOTE
'Viewable in config mode' in
display itself while in configuration mode. All other faults require the radar
to be actively used and are not retained upon reset.
Table 4-10. GWX Processor Troubleshooting
Fault Indication
Electrical Status Indicator
400Hz Status Indicator
High Volt Status Indicator
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Page 4-70
Table 4-10 means the fault (if persistent) can
Cause
• Voltages within the unit
are out of range.
• 400Hz Attitude Analog
Reference Signal is
below minimums.
• A valid 400Hz attitude
signal must be
received then lost to
set this box to red in
the current power
cycle.
• Transmit Power
Supply is below the
minimum threshold of
12.0V when
transmitting.
Solution
• Cycle unit twice to confirm
problem.
• Replace the GWX if
condition remains.
• Viewable in config mode.
• Verify the attitude reference
signal is valid and properly
connected the GWX.
• This fault should not be
shown if analog attitude is
not used.
• Viewable in config mode.
• Command the unit back to
Weather mode again. If the
problem persists, cycle
power on unit and
command the unit back to
Weather mode again.
• Replace the GWX if
condition remains.
• Not viewable in config
mode.
LMM for the Kodiak 100
190-02102-00 Rev.4