JRC JCY-1900 Instruction Manual page 123

3. The test results judge by the LED that is the top of storage module. If the LED blinks only once,
the test is pass.
Number of flashing
1
2
3
4
5
6
7
4. If the test is pass, release the switch and fit the front cover.
Table 5-2 Error message by LED blinking
None
Low power on 406MHz transmitter
Low battery voltage
Low power on 121.5MHz transmitter
PLL on 406MHz transmitter out of lock
PLL on 121.5MHz transmitter out of lock
EPIRB module not programmed or programming not complete
Chapter 5 About Float-free Capsule
Fault indication
87