Yamaha YDRE Owner's/Operator's Manual page 38

2. Hardware System Faults
Problem Description
Charger does not start.
No LEDs illuminate or
blink when AC cord is
connected.
Charger does not start
charging when DC cord
set is plugged into the
receptacle and the
Amber AC On LED is
illuminated.
Charger runs longer
than 20 hours.
Have qualified service technician inspect if problems persist.
JW2
Cause
No AC power to
charger.
Incorrect wiring or
disconnection from DC
cord, receptacle and
batteries.
Battery voltage less
than 20 Volts.
Charger may be in
"boosting" stage.
MAINTENANCE
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, receptacle
and batteries.
Check battery pack
voltage.
Confirm Green 100%
LED is blinking. (This
indicates boosting.)
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