3. OPERATION CHECKING ON HARDWARE
JCY-1900
1950
DR Service Manual
48
DOC No. 7ZPNA4409
3. OPERATION CHECKING ON HARDWARE
3.1. Fixed Protective Capsule Unit : NDH-338
3.1.1. Check of the beacon
1) Expiration date
Check the expiration date written to the beacon. When the expiration date is less than one year, replace the beacon.
2) Battery voltage
Measure the battery voltage in the following procedure. (check the method written to the beacon).
When battery voltage is less than 2.5V, replace the beacon.
・ From serial number 18717-00-30336 on : Less than 3.2V
・ From serial number 18717-00-30001 to 18717-00-30335 : Less than 2.5V
1
Short-circuit between terminals for 3 sec with
lead.
2
Remove lead, measure the voltage between ter-
minals with the multimeter.