Chapter 6 Troubleshooting and on-board repair
MDC-2200/2500 Series
6-8
0092625002-07
6.3.2 Malfunction diagnostics flow chart
The following malfunction analysis chart can be used by service personnel for malfunction
diagnostics and location of defect module. This chart shows flow diagnostics for basic malfunction
troubleshooting.
6.3.2.1 Initial malfunction diagnostics 1
Does Display unit
operate?
Start
Does display screen
change to [STNDBY]
Power “ON” the Radar
.
Yes
Start transmitting
Is display normal?
Do the knobs and keys
operate normally?
Does short buzzer
sound?
Is radar picture displayed?
No
Refer to [6.3.2.6 Data such
as heading,speed,latitude/
longitude cannot be received]
Refer to [6.3.2.7 Operation
panel error]
Refer to [6.3.2.8 Other
errors]
Refer to [6.3.2.5 Radar
picture error]
Refer to [6.3.2.4 No response
from the Antenna unit]
Refer to [6.3.2.3 No display]
Is error message
displayed in NU, CU,
TM mode?
Is error related to the
external data input
item?
No
Yes
No
Yes
No
No
No
Yes
Yes
Yes
Refer to [6.3.2.9 Antenna
unit error]
Other errors
No
Yes
No
Refer to [6.3.2.2 Initial
malfunction diagnosis 2]
Summary of Contents for MDC-2200 series
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