Tools Needed; Important Information Regarding The Field Repair Of Gpsmap 7400/7600 Series Chartplotters; Troubleshooting; Important Troubleshooting Information - Garmin GPSMAP 7400 Series Field Service Manual

Tools Needed

• A 1 GB or larger memory card (to update the chartplotter)
• A 10 to 35 Vdc 6 to 10 A power supply (for bench testing)
• #1 Phillips screwdriver (removing the case screws on a seven- or eight-
inch chartplotter.)
• #0 Phillips screwdriver (SD card socket)
• T6 screwdriver (removing the case screws on a ten-, twelve-, or sixteen-
inch chartplotter)
• 14 mm, 16 mm, 21 mm, and 29 mm wrenches or sockets (removing the
nuts on each port)
• Torque wrench (pneumatic) with:
◦ 14 mm, 16 mm, 21 mm, and 29 mm sockets (securing the nuts on
each port)
◦ T6 bit (securing the case screws on a ten-, twelve-, or sixteen-inch
chartplotter)
◦ #1 Phillips bit (securing the case screws on a seven- or eight-inch
chartplotter)
• Replacement part kit (specified in the repair topic)
• Soldering iron and solder (patch antenna)
• Desoldering braid (patch antenna)
• Voltmeter
• GPSMAP 7400/7600 series NMEA 2000 cable (testing NMEA 2000 ports)
• Garmin Marine Network cable (testing Network ports)
Important Information Regarding the Field Repair of
GPSMAP 7400/7600 Series Chartplotters
• This manual covers the repair of all GPSMAP 7400/7600 series chartplotters.
In some procedures, the size of the chartplotter screen is used to
differentiate the models:
◦ Seven-inch chartplotters: GPSMAP 7407, 7407xsv, 7607, 7607xsv
◦ Eight-inch chartplotters: GPSMAP 7408, 7408xsv, 7608, 7608xsv
◦ Ten-inch chartplotters: GPSMAP 7410, 7410xsv, 7610, 7610xsv
◦ Twelve-inch chartplotters: GPSMAP 7412, 7412xsv, 7612, 7612xsv
◦ Sixteen-inch chartplotters: GPSMAP 7416, 7416xsv, 7616, 7616xsv
• Before performing any service to the chartplotter, ensure that the system
software is up-to-date. If it is not, go to
latest software version and use a 1 GB or larger SD card to update the
chartplotter. Only proceed with the service if the software update does not
resolve the issue.
• Record the serial number of your chartplotter. The serial number will be
needed when you order replacement parts.
• Replacement parts are available through Garmin Product Support.
Call 866-418-9438 to speak with a representative.
• Never use replacement parts from other chartplotters, even from the same
model. Order all replacement parts from Garmin Product Support to ensure
compatibility with your chartplotter.
• Although some replacement kits include cables, if the original cables are
in good working condition, you should use them instead of the new ones
supplied in the kit.
• Each time you remove copper tape from internal components, you must
replace it. Copper tape is supplied with applicable parts kits.
2
www.garmin.com to download the

Troubleshooting

Important Troubleshooting Information

If possible, you should perform troubleshooting procedures while on the boat to
best determine the failed component. If the repair need is not readily apparent,
such as a broken keypad or a broken power connector, you should boot the
chartplotter in test mode to identify the failed components.
Before performing any service to the chartplotter, ensure the system software
is up-to-date. If it is not, go to www.garmin.com
version and use a 1 GB or larger memory card to update the chartplotter. You
should perform the service only if the software update does not resolve the
issue.

Loading the New Software on a Memory Card

1
Insert a memory card into the card slot on the computer.
2
Go to www.garmin.com/support/software/marine.html.
3
Select Download next to "GPSMAP Series with SD Card."
4
Read and agree to the terms.
5
Select Download.
6
Select Run.
7
Select the drive associated with the memory card, and select Next > Finish.

Updating the Device Software

Before you can update the software, you must obtain a software-update memory
card or load the latest software onto a memory card.
1
Turn on the chartplotter, and wait for the home screen to appear.
NOTE: In order for the software update instructions to appear, the device
must be fully booted before the card is inserted.
2
Open the memory card door.
3
Insert the memory card, and press it in until it clicks.
4
Close the door.
5
Follow the on-screen instructions.
6
Wait several minutes while the software update process completes.
The device returns to normal operation after the software update process is
complete.
7
Remove the memory card.
NOTE: If the memory card is removed before the device restarts fully, the
software update is not complete.

About the Test Mode Screen

The Test Mode screen provides hardware diagnostics and software information.
Use the test mode screen to identify problems. Any failed tests could be
problematic, and should be examined further.
NOTE: Testing the NMEA 2000 and Garmin Network functionality requires either
a special cable or a known working Garmin Marine Network device.

Activating Test Mode

1
Select Settings > System > System Information > Software Information.
2
Hold above the software version number
➊ ➊
3
Select Field Diagnostics > Test Mode.
4
Wait 2–3 minutes for the self-tests to complete.
To navigate the Test Mode Screen, select a board or a test from the options
on the right side of the screen.
to download the latest software
➊ ➊
until the screen changes.
GPSMAP 7400/7600 Series Field Service Manual