Yamaha CS50 Service Manual page 194

s WARNING
s
• Handle the thermo switch with special
care.
• Never subject the thermo switch to
strong shocks. If the thermo switch is
dropped, replace it.
Thermo switch
16 Nm (1.6m • kg)
Three bond sealock
• Does the thermo switch operate properly as
described above?
YES
Replace the thermo
switch
3. Voltage
• Connect the pocket tester (DC 20 V) to the
meter coupler (wire harness side) as
shown.
Positive tester probe
Negative tester probe
Br
Gy
R
G
R /
Dg Ch L
• Set the main switch to "ON".
• Measure the voltage (DC 12 V) of brown
and green/red at the meter coupler.
• Is the voltage within specification?
YES
The circuit is OK.
®
10
NO
brown
green/red
Y GR L Ch Dg
Br B BY Sb G RY LG
GR Y Gy
LG RY G Sb BY B Br R
NO
The wiring circuit
from the main
switch to the meter
coupler is faulty
and must be
repaired.
SIGNALING SYSTEM
8-35
ELEC