Koden MDC-7006, Installation Manual

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MDC-7000/7900 Series Chapter 5 Troubleshooting and on board repair
0092669002-07 5-9
5.3.2 Malfunction diagnostics flow chart
The following malfunction analysis chart can be used by service personnel for malfunction diagnostics
and location of defective module. This chart shows flow chart of diagnostics for basic malfunction
troubleshooting.
5.3.2.1 Initial malfunction diagnostics
Can Operation unit operate?
Is the model name seen during
preheating countdown time?
Power
“ON” the Radar.
Yes
Start transmitting
Are radar echos normal?
Does short buzzer sound?
Are radar echos displayed?
No
Go to [5.3.2.8 Data such as heading, speed,
latitude/longitude cannot be received].
Go to [5.3.2.5 Operation unit error].
Go to [5.3.2.6 No radar echo].
Go to [5.3.2.4 No response from the
antenna unit].
Go to [5.3.2.3 No display].
No
No
Yes
No
Yes
Yes
Yes
Yes
Other errors
Are any message displayed?
Is the NMEA serial input data
displayed?
Is the AIS data displayed?
Yes
No
Go to [5.3.2.7 Weak sensitivity of the radar
echo].
No
No
No
Go to [5.3.2.9 AIS].
Go to [5.3.2.2 Cannot turn on the power].