JRC JMA-3400 Series, Instruction Manual, Page: 247 / 314

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Chapter 10 MAINTENANCE AND CHECK
10.3 PERFORMANCE CHECK
Make operational check on the radar equipment regularly and if any problem is found, investigate it
immediately.
Pay special attention to the high voltage sections in checking and take full care that no trouble is
caused by any error or carelessness in measurement. Please take note of the results of checking, the
reason can be used effectively in the next check work.
Operational check shall be made in accordance with Table 10.3.1 Performance Check List in
the order as specified in it.
Equipment Item to be checked Criteria or Method Remarks
Scanner Unit Tuning Can be adjusted tuning
at the manual tune.
Observe a weak echo
as far possible.
24NM or 48NM range
during transmitting
Magnetron Current 10.3.1 Test-System
Information
Scanner information
The bar is 50% more
Antenna Rotation Rotation speed can
change slow, when
small Range changing
to up.
Display Unit Gain can be
LCD brilliance can be
Marker can be
VRM can be
EBL can be Can be correctly
controlled using the
functional icon.
Communication Lines 10.3.8 Self Test
Line Test
Key 10.3.8 Self Test
Key Test
Key Light 10.3.8 Self Test
Key Light Test
Buzzer 10.3.8 Self Test
Buzzer Test
Memory 10.3.8 Self Test
Memory Test
Error Logging check 10.3.1 Test-System
Information
Error Log
Software check 10.3.1 Test-System
Information
System Information
Table 10.3.1 Performance Check List