Setting A Dead Sector; Checking Magnetron Heater Voltage - Furuno FR-7062 Installation Manual

10. Setting a dead sector

When the scanner is installed at a close dis-
tance in front of the wheelhouse, the radar
should be set not to transmit within that area,
to prevent microwave hazard.
1. Select 7. Dead Sector on the Installation
Setup menu and press the [ACQ/ENTER]
key.
2. Operate the trackball to enter starting point
of sector (in figures).
3. Press the [ACQ/ENTER] key.
4. Operate the trackball to enter ending point
of sector (in figures).
5. Press the [ACQ/ENTER] key.
Note: The dead sector graphic can be turned
on/off on the OTHERS menu. For further de-
tails, see the Operator's Manual.
Figure 27 Dead sector
11. Checking magnetron heater
voltage
Magnetron heater voltage is formed on the
MD Board (03P9235) of the scanner unit, and
is preadjusted at the factory for use with any
length of signal cable. Therefore no adjust-
ment is required. However, check magnetron
heater voltage as follows:
1. Turn on the radar and leave it in stand-by.
2. Open the scanner cover.
3. Unfasten four screws to remove the RF
section cover.
Dead
sector
12
DANGER
ELECTRICAL SHOCK HAZARD
This check is done with the
power on — DO NOT touch
the magnetron.
Figure 28 Scanner unit, cover opened
4. Connect a multimeter, set to 10 VDC
range, between test point J825#4 and
J825#6(GND) on the RTB Board
(03P9249).
Figure 29 Scanner unit, cover removed
5. Confirm the meter reads 7.6 V ±0.1 V.
6. Close the scanner cover and tighten the
cover fixing screws.
Magnetron
Four screws
Measure voltage
at this connector
(J825).