Yamaha X0S Series, Service Manual

Page: 43 / 64

2-31
Diagnosis function
ELEC
– +
Displa
y pattern
Fault de
vice
Err
or
codes
Fault details
P
o
wer assist beha
vior and err
or
code recor
d
*Restoration
Max Le
vel
Action
Alternately flashes
Motor or Controller
50
Abnor
mal v
oltage of the
sen
sor f
or U phase current
while the motor is not oper
ating.
P
ow
er assist will immediately stop
after deter
mine the error
.
Error code will record.
1
Replace the controller assemb
ly
.
51
Abnor
mal v
oltage of the
sen
sor f
or
V phase current
while the motor is not oper
ating.
52
Abnor
mal v
oltage of the
sen
sor f
or
W phase current
while the motor is not oper
ating.
53
Ov
er current is applied to the U
phase of the motor
.
P
ow
er assist will stop after deter
mine
the error
.
Error code will record.
2
1.
Replace the controller assem
bly
.
2.
Replace the motor assemb
ly
.
54
Ov
er current is applied to the
V
phase of the motor
.
55
Ov
er current is applied to the
W phase of the motor
.
56
Abnor
mal DC current
P
ow
er assist will immediately stop
after deter
mine the error
.
Error code will record.
1
60
Not within the 12V output range
P
ow
er assist will immediately stop
after deter
mine the error
.
Error code will record.
1
Replace the controller assemb
ly
.
70
Exter
nal memor
y data error
P
ow
er assist will immediately stop
after deter
mine the error
.
Error code will record.
1
Replace the controller assemb
ly
.
71
Failure in data reading