Datron PRC-PS, Operator'S Manual

Page: 26 / 45

5: Maintenance
5-2 PRC-PS-MS
4. The READY LED for the INTERNAL charging station should light up
in a few seconds. If it does not, measure the capacitor voltage to make
sure it is greater than 6 Vdc. If the capacitor voltage is above 6 Vdc, the
charger circuit has a fault.
DC Current Check 1. Connect a DC ammeter, and 6.8 ohm and 2.2 ohm resistors in series and
connect them across the capacitor. Refer to the DC Current Check Setup
figure on page 5-3 .
2. Measure the DC current. It should be 1.1A ±0.1A. The CHARGING
LED for the INTERNAL charging station should be lit when the
ammeter and resistors are connected.
3. Disconnect the ammeter and resistors. The READY LED should light up
after a few seconds.
Figure 5-1. Charger Output Check Setup
A
B
C
REAR PANEL
(
BATTERY REMOVED
)
(+) (–)
A
B
C
A
=
GROUND
B
=
V
12
DC