Yamaha X0S Series, Service Manual, Page: 44 / 64

2-32
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
80
Detected circuit board temper
ature is too lo
w
. (–20°C)
P
ow
er assist will stop after deter
mine
the error
.
Error code will record.
2
Replace the controller assemb
ly
.
81
Detected circuit board temper
ature is too high.
(125°C) (including DC circuit)
82
Sensor on the board is near
ly
detached.
Others
89
Detected circuit board temper
ature is too high.
(90°C)
P
ow
er assist is nor
mal.
Error code will record.
0
1.
Chec
k the en
vironment of
usage
.
2.
Replace the controller assem
bly
.