Yamaha F6BMH - Checking the Rectifier and Rectifier;Regulator

CHARGING SYSTEM (F8CW)
CHECKING THE RECTIFIER AND
RECTIFIER/REGULATOR
Measure:
 Rectifier output peak voltage
 Rectifier/regulator output peak
voltage
Below specification
 Replace the
rectifier or rectifier/regulator.
NOTE:
When measuring closed (cranking),
1500 r/min, and 3500 r/min, disconnect the
positive (+) terminal of the battery.
NOTE:
When measuring closed (cranking),
1500 r/min, and 3500 r/min, disconnect the
positive (+) terminal of the battery.
NOTE:
Before measuring the rectifier or the
rectifier/regulator peak voltage, make sure
that no abnormality is observed on the
lighting coil.
Rectifier output peak voltage A
Red (R) - Black (B)
r/min
Cranking 1,500 3,500
Opened Closed Opened Opened
D.C.V 2.8 — 13.3 32.2
Rectifier/regulator output peak
voltage
B
Red (R) - Black (B)
r/min
Cranking 1,500 3,500
Opened Closed Opened Opened
D.C.V 7.7 — 27 27
Peak voltage adaptor:
YU-39991/90890-03172
A
B
8-28