PIAGGIO NRG Power DT Workshop Manual page 56

Electrical system
4. Battery not recharging.
5. Turn signals not operational.
6. Dashboard check not operational.
Interventions
FAULT 1
Replace the regulator as definitely faulty.
FAULT 2
a) Check the output from the stator gives the cor-
rect voltage: detach the stator connector, inter-
pose an AC tester between the grey-blue and
black cables, and check the output voltage is with-
in the prescribed limits. If anomalies are found,
replace the stator.
b) If no anomalies are identified, replace the reg-
ulator.
c) If the replacement of the regulator does not
solve the fault, check the electric connections.
Specific tooling
020331Y Digital multimeter
Characteristic
Voltage distributed at 3000 rpms
25 to 30V
FAULT 3
After checking that there are no short circuits in the
system towards the earth, replace the regulator
because it is certainly inefficient and replace it with
a protective fuse.
Following the replacement, measure the current
and the recharging voltage on the battery end.
ELE SYS - 10
NRG Power DT