Yamaha YDRE Owner's/Operator's Manual page 45

MAINTENANCE
2. Hardware System Faults
1
Problem Description
2
Charger does not start.
No LEDs illuminate or
blink when AC cord is
connected.
3
Charger does not start
charging when DC cord
4
set is plugged into
charger receptacle and
the Amber AC On LED
5
is illuminated.
Charger runs longer
6
than 20 hours.
7
Have qualified service technician inspect if problems persist.
8
9
10
11
7-17
Cause
No AC power to
charger.
Incorrect wiring or
disconnection from DC
cord, charger receptacle
and batteries.
Battery voltage less
than 20 Volts.
Charger may be in
"boosting" stage.
Remedy
Ensure correct voltage
at AC outlet. Check AC
cord connections.
Replace AC cord if
damaged.
Ensure polarity for
wiring is correct from
DC cord, charger
receptacle and batteries.
Check battery pack
voltage.
Confirm Green 100%
LED is blinking. (This
indicates boosting.)
JC1