VESPA LX 150 4T Euro 3 Service Station Manual page 62

Electrical system
- Pick-Up
Disconnect the control unit connector and connect
the positive terminal to connector No. 3 and the
negative terminal to connector No. 12 (see figure).
Use the start-up system to run the engine and
measure the voltage produced by the Pick-Up.
Replace Pick-Up if non-conforming values are
measured.
N.B.
THE MULTIMETER MUST BE SELECTED TO DETECT
CONTINUOUS VOLTAGE.
Electric characteristic
Pick-Up voltage value
Pick-Up voltage value: > 2 Volt
- H.V. coil
With the control unit and HV coil connected to the
circuit, measure the voltage of the coil primary dur-
ing the start-up test with the voltage peak adaptor
and connect the positive terminal to the ground
one and the negative to the coil positive connector.
If non-conforming values are measured, replace
the control unit.
THE POSITIVE TERMINAL OF THE HV COIL PRIMARY IS
BLACK.
Electric characteristic
High voltage coil voltage value
High voltage coil voltage value: > 100 Volt
Battery recharge circuit
The charging circuit consists of three-phase alternator and a permanent magneto flywheel.
The generator is directly connected to the voltage regulator.
In turn, the latter is directly connected to ground and to the battery positive passing through the 15A
safety fuse.
This system therefore requires no connection to the ignition key.
The three-phase alternator provides good recharge power and at low revs a good compromise is ach-
ieved between generated power and idle stability.
For this reason, it is very important that the idle speed is adjusted as prescribed.
Specific tooling
020333Y Single battery charger
ELE SYS - 62
Vespa LX 125 - 150 4T Euro 3