3 installation check list – Furuno 841 User Manual

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5. Add jumper wire between J55 pin

#3(RXD-H) and J61 pin #1(TXD-H).

6. Add a jumper wire between J55 pin

#4(RXD-C) and J61 pin #5(SHIELD).

JP3

JP4

CR14

R90
R91

R93
R94

Q15

R95
Q16

R92

R91

Add the jumper wire between J61#1 and J55#3.

Add the jumper wire between J61#5 and J55#4.

J61

J55

R69

C27

R70

7. Connect the NMEA cable to the con-

nector assy (03-1796/5P, supplied with
radar) as shown in the figure below.

8. Connect the 5P connector to J51 on SPU

Board.

9. Replace the covers removed in step 1.

10.Connect navaid and other equipment to

radar.

11.Turn on the radar and confirm that NAV

data in properly received at the radar and
external equipment.

5.3 Installation Check List

After completing the installation it is a good
idea to check for proper installation. Follow
the checklist below and tick boxes to show
proper completion.

❒ Is the vent tube on the antenna housing

on the stern side?

❒ Are the four bolts for fixing the radome

tightened?

❒ Is the signal cable waterproofed at the

radome base?

❒ Is the signal cable secured against a mast

or bulkhead?

❒ Is the cable gland or cable entry on the

deck fully waterproofed?

❒ Are the connections to the battery of

correct polarity?

❒ Are all the antenna and display units

grounded?

Echosounder

Other Equipment
(Telesounder data not be mixed.)

NMEA cable

Solder