Schumacher SC-7500A 用户手册
15
TROUBLESHOOTING
Performance problems often can be corrected by the user. Please read through this chart
for a possible solution to common problems.
PROBLEM
POSSIBLE CAUSE
SOLUTION
The battery is connected
and the charger is on,
but isn't charging.
The charger is in tester
mode, not charger mode.
Press the CHARGE
RATE button to activate
charging and select a
charge rate.
Indicator lights are lit in
an erratic manner not
explained in the “Using
Your Battery Charger”
section.
You might have acciden-
tally activated a special
diagnostic mode.
The charger may be
defective.
Make sure nothing is
touching the control
panel, then unplug the
charger and plug it in
again.
Return to place of pur-
chase for replacement.
The CHECK (red) LED
always flashes before
the battery is completely
charged.
The incorrect BATTERY
TYPE may have been
selected.
This will happen if the
battery did not reach full
charge within 24 hours.
May be due to a very
large battery or a bank
of batteries requiring
more power than a 30/12
Amp charger can deliver
within 24 hours. The bat-
tery may also be faulty.
Reset the charger by
unplugging it or briefly
disconnecting it or briefly
disconnecting the nega-
tive battery clip. Select
the desired CHARGE
RATE and BATTERY
TYPE again, if neces-
sary.
Engine crank time is less
than specified.
Starter motor may be
drawing more than 80
Amps.
Charge the battery at the
12A
30A rate for 10
to 15 minutes then crank
the engine.
The green CHARGED
LED lights a few minutes
after connecting to the
battery.
The battery may be
fully charged or recently
charged, leaving the bat-
tery voltage high enough
to appear to be fully
charged.
The incorrect BATTERY
TYPE may have been
selected.
If the battery is in a ve-
hicle, turn the headlights
on for a few minutes
to reduce the battery
voltage and try charging
again.
Reset the charger by un-
plugging it or briefly dis-
connecting the negative
battery clip. Select the
desired CHARGE RATE
and BATTERY TYPE
again, if necessary.