JRC JMA-5206 Instruction Manual page 304

[I] Self-diagnosis function
Check of Memory, Scanner Unit, and Communications Lines
Memory Test
Sensor Test
Line Test
Procedures 1
2
Exit 1
1) Memory check
2) Antenna check
3) Communication line check
Press [1] key while the Test Menu is
open.
The SELF TEST Menu will appear.
Select the item you want to check,
pressing numeric keys [1] to [3] .
The SELF CHECK Menu will appear.
Press [RADAR MENU] key.
The Self Test Menu will be closed.
8─3
Self Test
1. Memory Test
2. Sensor Test
3. Line Test
0. EXIT