3. OPERATION CHECKING ON HARDWARE
JCY-1900
1950
DR Service Manual
57
DOC No. 7ZPNA4409
3.3.3. Battery
1) Expiration date
Check the expiration date written to the battery.
2) Battery voltage
To check the power supply battery voltage, use the maintenance software, or measure it at the following battery ter-
minals with a digital volt-ohm meter.
Because when the battery is charged, the charge voltage is applied to the battery, the battery voltage cannot be meas-
ured correctly with the digital volt-ohm meter. Therefore measure the voltage when the RCU power is off.
If the battery voltage is lower than “12V”, replace the battery with new one.
Specification of Battery charge:
・ After the power on, charges the battery for 20 hours continuity.
・ Charges the battery once a day for 10 minutes automatically.
・ When the RCU recovered from blackout, the battery will be charged for 10 times of the period which had
blackout.
Battery terminal (-) Battery terminal (+)
Turn OFF the power.
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