Fault Finding; Absent Data - Raymarine Raydata Installation And Operating Handbook

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7.2 Fault Finding

All Raymarine products are, prior to packing and shipping, subjected to
comprehensive test and quality assurance programs. However, if a
fault arises with your RayData, the following table will help you to identify
the probable cause and provide the most likely cure.
Fault
Instrument display blank. No supply voltage.
No depth or speed/temp Mode set incorrectly. If repeating SeaTalk data, change
data on RayData.
No speed or temperature Speed transducer
information.
No speed through water Paddlewheel fouled. Clean paddlewheel.
information.
No depth information.
No NMEA data.
No exchange of
information between
SeaTalk instruments.
Failure of a group of
instruments in SeaTalk
chain.
Operation in Very Shallow Water
The Raydata is designed to operate down to a minimum depth of 2.8
feet below the transducer. Below this value, multiple echoes can
sometimes be received, resulting in deeper depth readings than the
actual depth.

7.3 Absent Data

If a required data value is not received via the SeaTalk bus or NMEA
connection for 30 seconds, then the displays that require the data
RAYDATA Installation and Operation Handbook
Cause
cabling problem.
Depth transducer
cabling problem.
NMEA cabling
problem.
SeaTalk cabling
problem.
SeaTalk cabling or
connector problem.
Action
Check DC power supply to RayData.
Check cabling and security of
SeaTalk connectors.
Check fuse/breaker.
Return unit for repair.
mode from Master to Repeater in
setup (see Chapter 4).
If repeating NMEA data, change
mode from Repeater to Master.
Check cabling and security of
speed transducer connector.
Use Speed Over Ground display (if
available) in interim.
Check cabling and security of
depth transducer connector.
Check cabling and security of
NMEA connector.
Check security of SeaTalk
connectors.
Disconnect instruments one by one
to isolate faulty unit.
Check security of SeaTalk
connectors and non-functioning units.