Checking Magnetron Heater Voltage; Navigation Data Source - Furuno MARINE RADAR 1823C Installation Manual

3.4

Checking Magnetron Heater Voltage

Note: This confirmation/adjustment should only be performed by a qualified service
technician.
Magnetron heater voltage is formed on the PTU (1833C)/MD (1823C/1933C/1943C/1953C)
Board of the antenna unit, and preadjusted at the factory. Therefore no adjustment is
required. However, check magnetron heater voltage for confirmation as follows:
1. Open the antenna unit.
2. Turn on the power. Do not transmit the radar.
3. Connect a multimeter, set to 10VDC range, appropriate position on the MD (1823C),
PTU (1833C) or RTB (1933C/1943C1953C) Board in the antenna unit. Refer to the table
in below.
4. Confirm that the multimeter indication is appropriately.
Check point
Multimeter indication
Adjustment point
3.5

Navigation Data Source

The NAV SOURCE SETTINGS menu mainly selects the source of nav data. For navigator
other than the FURUNO GP-310B/320B, speed averaging and local time offset (to use local
time instead of UTC time) are also available from this menu.
1. Press the [MENU] key followed by SYSTEM CONFIGURATION, NAV OPTION and NAV
SOURCE SETTINGS soft keys to show the NAV SETUP menu.
MODEL1823C
TP804#6 (+) and #4 (-)
on MD Board
7.9 to 8.1 V
VR801 on MD Board
POSITION SOURCE
SPEED AVERAGING*
LOCAL TIME OFFSET*
TEMP CALIBRATION
DEPTH CALIBRATION
* For GPS receiver other than GP-310B/320B.
Nav setup menu
MODEL1833C
TP802#4 (+) and #6 (-) on
PTU Board
7.4 to 7.6 V
R106 on PTU Board
ALL
0060second (s)
+00:00
+00 F
+00ft
MODEL1933C/1943C/1953C
J825#4 and #6 (GND) on
RTB Board
7.4 to 7.6 V
VR801 on MD Board
NAV
SETUP
EDIT
RETURN
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