Garmin GPSMAP 8400 Series Field Service Manual

GPSMAP
Field Service Manual
Use this manual to identify and replace certain failed components of a
GPSMAP 8400/8600 series chartplotter.
Repairing and performing maintenance on Garmin electronics is complex work
that can result in serious personal injury or product damage if not done correctly.
Components on the circuit boards hold a high-voltage charge. To be safe,
disconnect the device from power before opening it for service. If you have
power applied to the device while it is open, use caution when working around
the circuit boards located on the inside of the front housing.
Garmin is not responsible for, and does not warrant, the work that you or a non-
authorized repair provider perform on your product.
Follow the guidelines set forth by Garmin regarding static discharge protection
and a dust-free repair environment to avoid damaging the chartplotter during
repair.
Verify all gaskets are reinstalled or replaced correctly when repairing the
chartplotter to maintain water-resistance.
GPSMAP 8400/8600 Series Field Service Manual
8400/8600 Series
®
WARNING
 
NOTICE

Table of Contents

Tools Needed ........................................................................................................
Important Information Regarding the Field Repair ...............................................
Troubleshooting ������������������������������������������������������������������������������������
Important Troubleshooting Information .................................................................
Loading the New Software on a Memory Card ...............................................
Updating the Device Software ........................................................................
Test Mode Screen .................................................................................................
Activating Test Mode .......................................................................................
Testing ..................................................................................................................
Testing the Display..........................................................................................
Testing the Touchscreen .................................................................................
Testing the Power Button Board .....................................................................
Locating Problems ..........................................................................................
Testing NMEA 0183 ........................................................................................
Testing NMEA 2000 ........................................................................................
Testing HDMI Input .........................................................................................
Testing HDMI Output ......................................................................................
Testing Composite Video ................................................................................
Testing J1939..................................................................................................
Testing Wi-Fi ...................................................................................................
Testing ANT ....................................................................................................
Separating the Housings ......................................................................................
Separating the Rear Housing from the Front Housing....................................
Removing the Main Board ....................................................................................
Removing the ICB Board ......................................................................................
Removing the Power Button Board ......................................................................
Reassembling the Housing ...................................................................................
Repair Procedures ���������������������������������������������������������������������������������
Replacing Weather Caps ......................................................................................
Replacing the Rear Housing .................................................................................
Replacing the Front Case Assembly ..................................................................
Replacing the Main Board ..................................................................................
Replacing the ICB Board ....................................................................................
Replacing the Power Button Board ....................................................................
2
2
2
2
2
2
2
2
3
3
3
3
3
4
4
4
4
4
4
4
4
5
5
6
7
8
8
9
9
9
10
10
10
10
1