Cdi Unit - Yamaha 20C Service Manual

ELEC
CLEANING, INSPECTION AND REPAIR
M53509-0*

CDI UNIT

1) Measure the resistances of the CDI unit using
Yamaha pocket tester.
W : White
W/R : White/Red
Br : Brown
B : Black
Or : Orange
+ 1 2
Charge Pulser Ground Ignition
-
Br W/R
∞
Br
W/R 30.4-45.6
∞
B 7.52-11.28
∞ ∞
O
∞ ∞
W
∞
B 7.52-11.28
∞
B 7.52-11.28
7 ....Needle swings once and returns to home position.
∞
...No continuity
NOTE:
The test indicated by "7" should be made with the
condenser complately discharged, and therefore,
the needle will not deflect again. If any charge
remains in the condender, the needle will not swing
at all.
8-7
3 4 5 6
Stop Ground Ground
B O W B
∞
7
63.2-94.8 63.2-94.8 63.2-94.8
7
14.4-21.6 8.8-13.2 14.4-21.6 14.4-21.6
∞
7
0
∞ ∞ ∞
∞ ∞ ∞
∞
7
0
∞
7
0 0
E
Unit: kΩ
7
B
0
∞
∞
0