JRC JMA-5212-4, Service Manual

Page: 117 / 172

6-1
Perform operation checks on the radar equipment at regular intervals, and if any
abnormality is detected, immediately start inspection on the abnormality. In particular, be
careful of the high voltages during operation checks, and caution should be taken to avoid
incorrect or carelessness measurement which can cause trouble. Take notes of the check
results that are very useful as reference during the next operation check.
6.1. Operation Check
This equipment has a self-diagnostic function for checking the equipment internal
operation conditions.
Open the Test Menu to perform the self-diagnostic function.
Procedure
1 Perform the following menu operation to open the Test Menu.
Main Menu
ψ
1. RADAR Menu
ψ
8. RADAR Sub Menu
ψ
9. Test Menu
2 Select the item you want to check.
1. Self Test 1. Self-diagnostic function
2. Monitor Test 2. Monitor check
3. Keyboard Test 3. Operation panel check
4. MON Display 4. Performance monitor
5. Alarm List / Log 5. Error log display
6. System INFO 6. System information display
MAGI Indication of magnetron current
3 The check contents will be displayed.
In the transmission state, the magnetron current is displayed in a bar graph.
Shown below are the normal values of transmitters. (Measurement in 48 nm range)
10 kW: Magnetron current indicator bar reaches 40 to 60%.
25 kW: Magnetron current indicator bar reaches 60 to 90%