Sym MB10A7-A series Service Manual page 191

12. Electrical System
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If the readings measured are not normal,
check parts in the circuit.
If the parts are normal, then trouble is in the
wiring.
If there is nothing wrong with parts and wiring,
replace the regulator rectifier.
Regulator rectifier inspection
measurement unit: KΩ
+
( )
White Yellow
(-)
White
∞
Yellow
∞
Red
∞
Green
Caution
Human body has resistor. Do not touch
the multi meter probe metal or the
measured value would be affected.
AC Generator coil inspection
Caution
The inspection of AC Generator charge
coil / lamp coil can be proceeded on the
engine.
Measure the resistor value between AC.
Generator wiring.
Disconnect AC Generator 6 pin coupler.
\
Standard value：
White ~ Green
Yellow ~ Green
Black / Red ~ Green
Blue / Yellow ~ Green
Replace the AC. Generator coil if the
measured value is over the standard value.
12-10
To this chapter contents
Red Green
∞ ∞
4~7
2.4~48
∞ ∞
∞
2.4~48
0.7Ω±10%
0.5Ω±10%
780Ω±10%
110Ω±10%
Regulator rectifier coupler
Red
White
White
Green
Blue / Yellow
Yellow
Yellow
Green
AC Generator coupler
Black / Red