Checking The Rectifier/Regulator - Yamaha F30B 2018 Service Manual

Checking the rectifier/regulator

Do not connect the battery cables in re-
verse. Otherwise, the rectifier/regulator
could be damaged.
1. Measure:
• Rectifier/regulator output voltage
Out of specification  Check the rectifier/
regulator for continuity.
Rectifier/regulator output voltage
(reference data)
Red (R)–Ground
r/min
1500
DC V
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
a. Disconnect the rectifier/regulator coupler
"a".
b. Connect the special service tool "1", and
then measure the rectifier/regulator output
voltage at the specified engine speed.
R
B
R B
1
Unloaded
3500
13 13
a
1
a
Charging unit and component
Test harness FW13613–2 "1"
90890-06887
Test harness FW13613–2 "1"
YB-06887
c. Disconnect the special service tool.
d. Connect the rectifier/regulator coupler.
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
2. Check:
• Rectifier/regulator continuity
Out of specification  Replace.
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
a. Disconnect the rectifier/regulator coupler.
b. Set the digital circuit tester to the diode
mode, and then check the rectifier/regula-
tor for continuity.
a
c
d
e
b
5-27
c
d
e
b
a