Yamaha X94 Series, Service Manual

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4-6
Service
Data Troubleshooting
When pressing the battery
capacity indicator button on
the battery pack, lamps [1]/[3]
and [2]/[4] or [1]/[2] and [3]/[4]
turn on alternately. Hold down the battery capac-
ity indicator button on the bat-
tery pack for 10 seconds.
(See Chapter 2 “Error diag-
nosis mode”.)
(See Chapter 2 “Battery
pack/battery charger diagno-
sis items table”.)
Replace the parts according
to “Battery pack/battery
charger diagnosis items
table”.
The battery capacity indicator
lamps [1] and [4] on the bat-
tery pack flash simulta-
neously.
Hold down the battery capac-
ity indicator button on the bat-
tery pack for 10 seconds.
(See Chapter 2 “Battery pack
protection function diagnosis
mode”.)
(See Chapter 2 “Battery
pack/battery charger diagno-
sis items table”.)
Replace the battery pack.
After disconnecting the
charging plug on the battery
charger from the battery
pack, the battery capacity
indicator lamps continue to
light.
Charging connector on the
battery pack. Charging connector and
charging plug are wet.
Clean the charging connector
and charging plug, and dry
them.
Abnormal sound is produced
from the Drive Unit assembly.
Assist driving
Abnormal sound is produced
during assist driving. Check for sprocket wear or
stretched chain
Abnormal sound is produced
when the motor is operating.
Disassemble the Drive Unit.
Inspect the driven gear.
Replace the motor assembly.
Turn the crank.
Turning the crank produces
periodic abnormal sound. Inspect the housing bearing.
Inspect the bearing.
Turn off the power for manual
pedalling.
Stepping on the pedal pro-
duces abnormal sound and
vibration (clicking).
Check the joints.
If further tightening does not
improve the problem, replace
parts.
Symptom Check point/method Possible cause/check Part replacement/action