Garmin GNC 420 GPS Receiver User Manual


 
400 SERIES MAINTENANCE MANUAL Page 3-7
P/N 190-00140-05 Rev. C
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Figure 3-5. Processor Location (Main Board)
3.4 STATIC MESSAGES
The unit informs the user of operational status using the messages listed in Table 3-5. These
messages can help in isolating a faulty assembly. Table 3-5 also shows the recommended action
for each message. Perform the recommended actions in the order listed.
If the unit fails any of the power-up integrity checks, a Fatal
Error Page will be displayed. Replace the Main Board if this
message is displayed.