Chapter 4 Troubleshooting and on-board repair MDC-2900 Series
4-8
0092629012-07
Does a short beep buzzer?
Start
Power “ON” the Radar.
Yes
After countdown, it
transmits on.
When MAN GAIN is
maximized and MAN SEA
is minimized, is the radar
image displayed?
No
Go to
[4.3.2.5 No response
from the Antenna
Scanner unit] in page
4-12
Go to
[4.3.2.4 Abnormal display]
in page 4-11
Go to
[4.3.2.2 Initial malfunction
diagnostics 2] in page 4-9
Is the "MDC COLOR
MARINE RADAR" normally
displayed momentarily?
Is the system name
displayed like
"MDC-2920"?
Was "NOT
CONNECTED"
displayed?
The inter switch function
is correctly set. Refer to
Operation manual
Chapter 4.7.
Logic PCB failure
Is the sensitivity normal?
Go to
[4.3.2.6 Sensitivity
failure] in page 4-13
Is the power lamp
lighted?
Go to
[4.3.2.8 Operation unit
abnormality] in page 4-15
Is the screen
brightness normal?
The brilliance key is
pushed, and the EBL
switch is turned
clockwise, and
brightness is maximized.
Do knobs and keys
operate normally?
Go to
[4.3.2.8 Operation unit
abnormality] in page 4-15
When MENU> ALARM>
HISTORY LIST is
displayed, is the Alarm
message displayed?
Go to
[4.2.1.1 Alarm display list]
in page 4-2
Go to
[4.3.2.3 Other faults]
in page 4-10
No
Yes
No
Yes
Yes
No
No
Yes
No
Yes
Yes
No
No
Yes
Yes
No
No
Yes
4.3.2 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 chart of dignostics for basic
malfunction troubleshooting.
4.3.2.1 Initial malfunction diagnostics 1
