Koden Electronics RB719A Marine Radar RA55 User Manual C17 CHAP6 Mainte 1

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Document ID	267664
Application ID	15BrssjqKonjA9rSBmf+vw==
Document Description	C17
Short Term Confidential	No
Permanent Confidential	No
Supercede	No
Document Type	User Manual
Display Format	Adobe Acrobat PDF - pdf
Filesize	1.57kB (19642 bits)
Date Submitted	2002-09-03 00:00:00
Date Available	2002-11-25 00:00:00
Creation Date	2002-08-30 17:22:10
Producing Software	Acrobat PDFWriter 4.0 Windows NT
Document Lastmod	0000-00-00 00:00:00
Document Title	C17_CHAP6_Mainte-1.PDF
Document Creator	C17_CHAP6_Mainte-1.rtf - Microsoft Word
Document Author:	109983

CHAPTER 6. MAINTENANCE AND INSPECTION
WARNING
There are high voltage circuits inside this radar. Do not attempt to open
the rear cover of display unit or disassemble internal parts. Leave this
to qualified service personnel. When you open the radome, power must
be off. Never work on or near the radome while it is operating.
Even if the power switch is OFF, this radar still has electrically charged
components inside.
Tab. 6-1 Owner Inspection and Maintenance Items
Interval
3-6 months
6-12 months
Item
Scanner hardware
Procedure
Check if the scanner’s mounting bolts are corroded or loose.
LCD display
Clean filter and LCD screen surfaces with a soft
moist cloth.
Antenna drive
Apply an even coating of grease to the entire
surface of the antenna drive gear. Be certain to
use grease that will not harm plastic surfaces.
Electrical connectors Check electrical connectors on back panel of display unit for proper contact by unscrewing them
and examining the contacts. Remove any corrosion by polishing or using a contact cleaning
agent.
Antenna motor
Check length of brushes and replace if under
brushes (open array 6mm.
antennas)
Replaceable items:
(1) Magnetron
This component is located in the scanner. If distant echo images have become less
visible, the magnetron probably is degraded. Contact your dealer or authorized repair
center for this service
Period of the replacement: 3000hour(typical) (500hour guarantee)
(2) LCD backlight
If the display screen becomes extremely dark and its illumination cannot be increased
by adjusting the Brilliance control, the LCD backlight may be faulty. Contact your
dealer or authorized repair center for this service
Period of the replacement: 15000hour(typical) (1000hour at 0 °C)
RA51/52/53/54/55 INSTRUCTION MANUAL – 05
67
(3) Fuse
Power supply cable
The fuse is built in the power
supply cable.
To display unit
Push
Wire(White)
Turn counterclockwise and
pull
Spring
Replace
new fuse
Fuse
Push and turn
clockwise
When working on the scanner, you can hang the upper half of the radome using a piece
of wire or cord through holes to either side of the mounting screws.
Cord
A: Top view
Hole
Radome(bottom)
Fixing screw
Cord
Radome(Upper)
68
RA51/52/53/54/55 INSTRUCTION MANUAL – 05

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Creator                         : C17_CHAP6_Mainte-1.rtf - Microsoft Word
Create Date                     : 2002:08:30 17:22:10
Title                           : C17_CHAP6_Mainte-1.PDF
Author                          : 109983
Producer                        : Acrobat PDFWriter 4.0 Windows NT

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