Yamaha PW series User manual

Display Unit
(LED type)
ORIGINAL INSTRUCTIONS
qREAD THIS MANUAL CAREFULLY!
It contains important safety information.

DESCRIPTION
1. Display unit (LED type)
1

E-BIKE SYSTEMS
The e-Bike Systems are designed to give you the optimal amount of
power assist.
It assists you within a standard range based on factors such as your pedaling strength, bicycle
speed, and current gear.
The e-Bike Systems do not operate in the following situations:
• When the display unit’s power is off.
• When you are moving 25 km/h or faster.
• When you are not pedaling.
• When there is no residual battery capacity.
• When the automatic power off function* is operating.
* Power turns off automatically when you do not use the e-Bike Systems for 5 minutes.
• When the assist mode is set to Off mode.
Three types of “assist mode” are available.
Choose from High-Performance mode, Standard mode, Eco mode and Off mode to suit your riding
conditions. See “Displaying and switching the assist mode” for information on switching between
assist modes.
High-Performance mode Use when you want to ride more comfortably, such as when
climbing a steep hill.
Standard mode Use when riding on flat roads or climbing gentle hills.
Eco mode Use when you want to ride as far as possible.
Off mode Use when you want to ride without power assist. You can still use
the other display unit functions.

E-BIKE SYSTEMS
• This illustration is for reference purposes only. Actual performance may vary depending on road
conditions, wind, and other factors.
• In Off mode, power assist is not provided.
Eco mode
High-Performance
mode
Standard
mode
A mode for saving
assist power to
travel longer
remaining assist
distances.
The recommended
mode, balancing
assist power and
remaining assist
distance.
A mode that can be
counted on to
provide powerful
assist at all times.
Starting off Level road
Power-saving
Inclined road Steep incline
High-Performance
mode
Standard mode
Eco mode
Assist power
High
Low
Power assist chart

INSTRUMENT AND CONTROL FUNCTIONS
Display unit (LED type)
Assist mode
switch (up)
Function display
(Battery capacity indicator/
range meter/speedometer)
Assist mode
switch (down)
Assist mode lamp Light switch Light lamp
Power switch
Bicycle speed lamp
Function select
switch
Remaining assist
distance lamp
Residual battery
capacity lamp

INSTRUMENT AND CONTROL FUNCTIONS
Display unit (LED type)
The display unit (LED type) offers the following operations
and information displays.
2Power “On/Off”
Each time you press the power switch, the power switches
between “On” and “Off”. When the power turns on, all the
lamps on the display unit light up for approximately 2 sec-
onds and then turn off again. After that, the “STD” assist
mode lamp, battery capacity indicator, and the residual
battery capacity lamp (range meter and remaining assist
distance lamp, or the speedometer and bicycle speed
lamp) light up again.
TIP
• When you turn on the power, the assist mode is auto-
matically set to Standard mode.
• Keep your feet off the pedals when turning on the dis-
play unit. Also, do not start riding immediately after
turning on the display unit. Doing so could weaken the
assist power. (Weak assist power in either of these
cases is not a malfunction.) If you did either of the
above by accident, remove your feet from the pedals,
turn on the power again, and wait a moment (approxi-
mately 2 seconds) before starting to ride.
2Displaying and switching the assist mode
The assist mode lamp displays the selected assist mode.
• When you press the assist mode switch (up), the mode
changes from “OFF” to “ECO” to “STD”, or from “STD”
to “HIGH”.
• When you press the assist mode switch (down), the
mode changes from “HIGH” to “STD”, or from “STD” to
“ECO”, or “ECO” to “OFF”.
TIP
Further pressing of the assist mode switch (up) or (down)
will not cycle the assist mode selections.
In the Off mode, the assist mode lamp does not light.
Power switch
Assist mode switch (up)
Assist mode
switch (down) Assist mode lamp

Function display
(Battery capacity indicator/
range meter/speedometer)
Residual battery
capacity lamp
Remaining assist
distance lamp
Bicycle
speed lamp
Function
select switch
2Displaying and switching the battery capaci-
ty indicator, range meter, speedometer
You can display either the battery capacity indicator,
range meter or speedometer.
The battery capacity indicator displays an estimate of how
much capacity is left in the battery pack, the range meter
displays an estimate of the remaining assist distance (kilo-
meters) on the residual battery capacity (In assist off
mode, the speedometer displays, the remaining assist dis-
tance meter is not displayed.)
Each time you press the function select switch, the func-
tion display is switched, and either the residual battery ca-
pacity lamp, remaining assist distance lamp or bicycle
speed lamp lights up.
See “CHECKING THE RESIDUAL BATTERY CAPACITY”
for information on estimating the residual battery capacity.
TIP
When you turn on the power, the items that have been se-
lected last time are displayed on the function display.
When the speedometer is displayed, if the residual battery
capacity decrease to 20 %, 10 %, or 0 %, the meter’s dis-
play automatically switches to the battery capacity indica-
tor.
2Headlight “On/Off” (Applies only to models
equipped with a headlight powered by the
battery pack. The taillight, which is powered
by the battery pack, is switched on/off with
the headlight.)
Each time you press the light switch, the headlight switch-
es between “On” and “Off”. When the headlight is lit, the
light lamp also lights up.
TIP
When pressing the light switch, the back light of the dis-
play unit become dimmer.
For the “HIGH”, only “HI” lights up on the display with the
back light.
Light switch Light lamp
INSTRUMENT AND CONTROL FUNCTIONS

Assist mode
lamp Remaining assist
distance lamp
Bicycle
speed lamp
Residual battery
capacity lamp
Error display
2Display of faults detected by diagnosis mode
The e-Bike Systems are equipped with a diagnosis mode.
When you turn on the display unit’s power, if there is a
malfunction or fault in the e-Bike Systems, the systems
notify you of the fault by flashing the assist mode lamp,
residual battery capacity lamp, remaining assist distance
lamp, and bicycle speed lamp alternately, and displaying
“Er” in the function display. See “TROUBLESHOOTING”
regarding symptoms and remedies for abnormal displays
and abnormal flashing.
WARNING
If a fault is displayed, have your bicycle inspected at a
dealer as soon as possible.
INSTRUMENT AND CONTROL FUNCTIONS

You can check the estimate of how much capacity is left in the battery and to what extent it is
charged. The check can be performed using either the display unit’s residual battery capacity indi-
cator or the battery’s residual battery capacity indicator lamps.
TIP
• Even if the battery’s capacity reaches 0 (zero), you can still ride the bicycle as a regular bicycle.
• If you are using an old battery pack, the residual battery capacity indicator may suddenly display
very little power when you start moving. This is not a malfunction. Once riding stabilizes and the
load is reduced, the proper value is displayed.
Residual battery capacity indicator display and estimate of residual bat-
tery capacity for display unit (LED type)
Residual battery capacity indicator
display
Estimate of
residual
battery
capacity
Applicable situation
100–71 %
When the battery capacity is between
100 % (FL) and 21 %, the display
decreases in increments of 10 %.
70–41 %
40–21 %
20–11 %
When the battery capacity is between
20 % and 1 %, the display decreases
in increments of 1 %.
Slow flashing of numbers
<0.7 second interval>
10–1 % There is very little battery capacity left.
Please charge the battery soon.
Fast flashing of numbers
<0.3 second interval>
0 %
The battery capacity has reached 0
(zero). Please charge the battery
pack.
CHECKING THE RESIDUAL BATTERY CAPACITY

TROUBLESHOOTING
E-Bike Systems
Symptom Check Action
The assist mode
lamps, residual
battery capacity lamp,
remaining assist
distance lamp are
flashing in an
alternating pattern (at
intervals of roughly
0.2 seconds).
Or, the assist mode
indicator and battery
capacity indicator are
flashing in an
alternating pattern (at
intervals of 0.5
seconds).
There could be a problem inside the
Drive Unit is malfunctioning.
Turn on the power to the display unit and
then leave it alone for 5 minutes. All
lamps will turn off automatically. Turn the
power on again.
The display unit shuts
down immediately
(approx. 4 seconds
later) after switching
the power on.
Are the bicycle’s battery
pack connection
terminals dirty?
Remove the battery pack, clean the
bicycle’s terminals with a dry cloth or
cotton swab, and then install the battery
pack again.
Traveling range has
decreased.
Are you fully charging
the battery pack? Charge the battery pack until full (F).
Are you using the
system under low-
temperature
conditions?
Normal traveling range will be restored
when the ambient temperature rises.
Additionally, storing the battery pack
indoors (in a warm location) before use
will improve traveling range under cold
conditions.
Is the battery pack worn
out? Replace the battery pack.
The assist mode
lamps are flashing.
Assist mode lamp
These lamps will flash when the speed
sensor is unable to detect a correct
signal.
Turn off the power to the display unit and
then turn it on again, select the assist
mode and then ride for a short distance.
Also, make sure the magnet is mounted
correctly on the spokes of the wheels.