Koden Electronics RB719A Marine Radar RA55 User Manual C18 CHAP7 T Shooting 1

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Document ID	267665
Application ID	15BrssjqKonjA9rSBmf+vw==
Document Description	C18
Short Term Confidential	No
Permanent Confidential	No
Supercede	No
Document Type	User Manual
Display Format	Adobe Acrobat PDF - pdf
Filesize	1.41kB (17623 bits)
Date Submitted	2002-09-03 00:00:00
Date Available	2002-11-25 00:00:00
Creation Date	2002-08-30 17:23:22
Producing Software	Acrobat PDFWriter 4.0 Windows NT
Document Lastmod	0000-00-00 00:00:00
Document Title	C18_CHAP7_T Shooting-1.PDF
Document Creator	C18_CHAP7_T Shooting-1.rtf - Microsoft Word
Document Author:	109983

CHAPTER 7. TROUBLESHOOTING
The first step to take when your radar is not operating properly is to reboot the software.
Press and hold the POWER key for three seconds to turn the unit off. Wait for 15 seconds,
then power on again. If this does not correct the difficulty, then try a master reset. With
the unit turned off, press and hold the FTC and RANGE UP buttons, then press POWER.
When the screen lights up, release two buttons. If the problem persists at this point, continue with the troubleshooting steps.
WARNING
There are high voltage circuits inside of this radar. Do not attempt to open
the rear cover of display unit or disassemble internal parts. When you open
the radome for installation, power must be off.
Even if power switch is OFF, this radar is still supplied with power inside.
7.1 Fault Diagnosis by Self-check ___________________________
This radar has a self-check to diagnose equipment faults. If the unit is operable so that you
can access the MENU function, select SETUP>SYSTEM CHECK and press "ENT". Refer
to section 5.5.4.5 - Fault Diagnosis by Self Check (SYSTEM CHECK).
7.2 Troubleshooting System Components
Tab. 7-1 Troubleshooting
Symptom
(1) Radar cannot
be powered on.
(2) Nothing is displayed although
radar is powered
on.
(3) Screen is dark.
(4) Radar images
do not appear although
screen
display is present.
(5) Echo image on
screen differs from
actual image.
(6) Echo images
are blurred.
Cause
The unit is not receiving power
Power supply voltage is off specified
value.
Fuse in power cable is blown.
Brightness is improperly adjusted.
LCD is faulty.
Brightness is improperly adjusted.
Backlight is faulty.
Scanner interconnecting cable connector is not seated properly
Cable connectors inside radome are
not seated properly
Boat heading is incorrectly set.
Timing adjustment is incorrectly
set.
GAIN, STC, or FTC is improperly
set.
Magnetron has degraded.
RA51/52/53/54/55 INSTRUCTION MANUAL – 05
Corrective action
Use a voltmeter to check for power
where the cable is connected to
your boat's power source.
Correct voltage to within specified
power range. (See Section 3.2)
Replace fuse. (See Chapter 6)
Use BRIL key to adjust. (See Section 5.3.)
Contact your dealer.
Use BRIL key to adjust. (See Section 5.3.
Contact your dealer.
Go to system check menu to determine missing signals. Make
sure display set to radar mode (not
monitor mode)
Unplug and reattach cable connectors inside scanner
Set boat heading correctly. (See
Section 5.5.4.6.5)
Set timing adjustment correctly.
(See Section 5.5.4.6.5)
Adjust. (See Section 5.3.6 to 5.3.8.)
Contact your dealer.
69
(7)
Too
noise.
much
Radar is not tuned correctly
Radar is not properly grounded.
(8) No response
when a key is
pressed.
Panel key is not contacting.
Power supply circuit is faulty.
(9) No NMEA data
present
70
Incorrect data being transmitted by
talker device.
Adjust TUNE. (See Section
5.5.3.4)
Connect grounding wire to boat's
bonding or grounding system.
(See Section 3.4 to 3.6.)
Use SYSTEM CHECK to confirm.
(See Section 5.5.4.5) Contact your
dealer.
Contact your dealer.
With radar powered off, press and
hold MOB and RANGE UP keys,
then press POWER. When screen
lights up, release two buttons.
Unit will display actual NMEA
data being transmitted. Correct
talker as necessary.
RA51/52/53/54/55 INSTRUCTION MANUAL – 05

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Creator                         : C18_CHAP7_T Shooting-1.rtf - Microsoft Word
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Title                           : C18_CHAP7_T Shooting-1.PDF
Author                          : 109983
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