4. INSTALLATION
44
Note 1: Attach the MJ cable cap (supplied) to
the transducer cable to protect the connector
when the display unit is removed from the
boat.
Note 2: Cut unused cores and tape them.
Note 3: Hold connector when connecting or
disconnecting cables, to prevent damage to
the cable and connector.
Note 4: The fuse holder contains a spring
which fixes the fuse. To prevent detachment
of the spring, which would cause loss of pow-
er, tie the lines as shown below.
How to ground the display unit
• Use a 1.25 sq wire (local supply) for the
ground wire.
• Make the length of the ground wire as short
as possible and connect it to the boat’s
ground.
• For FRP vessel, attach a steel plate mea-
suring 20 cm by 30 cm on the outside of the
hull to provide a ground point. Connect the
ground wire there.
Note 1: Use a closed-type lug ( ) to make
the connection at the display unit. Do not use
a open-type lug ( ).
Note 2: For the boat with positive polarity DC
power and the fish finder is grounded to the
hull, external equipment cannot be connected
directly to the fish finder if the signal line of the
equipment is connected to ground.
External equipment
The [12-24 VDC/NMEA] port is commonly
used for connection of external equipment
such as a GPS receiver and/or wind indicator.
Refer to the interconnection diagram to con-
nect cables.
Speed/Temperature sensor
Connect the optional speed/temperature sen-
sor to the XDR port with the optional conver-
sion cable (Type 02S4147) as shown in the
figure below.
Connection of conversion cable 02S4147
Be sure to ground the display unit.
An improper ground or no ground can affect
performance and cause interference to other
equipment.
Fuse holder
Power supply lines
(red and black)
Cable tie
Connect to XDR port
at rear of display unit
MJ-A10SPF
MJ-A6SRMD MJ-A10SRMD
From
sensor
From
transducer
Tape connectors with
vulcanizing tape and
then vinyl tape to
waterproof them.
Bind tape ends with
cable ties to prevent
tape from unraveling.
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