Derbi BOULEVARD 50 2T, Workshop Manual

Page: 53 / 154

FAULT 2:
a) Make sure the stator is supplying voltage cor-
rectly: disconnect the regulator connector and
place tester 020331 y between the grey-blue wire
(2) and the black wire (6) to measure the alternat-
ing voltage and make sure that the voltage sup-
plied at 3000 rpm, is between 25 and 30V (FIG>
A). If there are any anomalies, replace the stator.
b) If the tests do not reveal any anomalies, replace
the regulator.
c) If replacement of the regulator does not restore
correct operation, check the connections of the
electrical system.
FAULT 3
After checking that there are no short circuits in the
system towards earthing with the engine off and
the regulator connector detached, replace the reg-
ulator because it is certainly inefficient, and re-
place the protection fuse.
Following the replacement, measure the current
and the recharging voltage on the battery ends
(FIG. B). The values detected must be 1.5 ÷ 2 A
and 13 V at 3000 rpm.
FAULT 4
a) By positioning tester 020331Y between the yel-
low wire terminal (8) on the regulator and the black
wire (6) (FIG. D), check the generator output volt-
age is within 26 and 30 V at 3,000 rpm (this meas-
urement must be carried out with the battery
detached). In the event of anomalies, replace the
stator; otherwise proceed to point b).
b) Yellow wire (1) attached to the regulator. Insert
an ammeter between the stator's blue wire (2) and
the battery, and check, using tester 020331Y, that
the current output, at 3,000 rpm and with the bat-
tery kept between 12 and 13V, is approx. 1.5 - 2 A
(FIG. C).
Electrical system
ELE SYS - 53