Schumacher SC-7500A 用户手册

12

This battery charger has a built-in alter-

nator tester that displays either an accu-

rate alternator voltage or an estimate of 

the alternator’s relative output compared 

to normal alternators. The Alternator % 

values displayed should be taken as 

general reference, not precise diagnosis. 

The alternator tester functions the same 

as the battery tester (see previous sec-

tion of this manual for details) with a few 

differences.
TESTING SEQUENCE

There are three basic steps required to use 

the SC-7500A as an alternator tester.
1.  Connect the charger battery clamps to 

the battery or charging system. Be sure 

to follow all of the precautions listed 

under “OPERATING INSTRUCTIONS”. 

2.  Connect the charger power cord to a 

120V AC 2-prong wall outlet. Again, be 

sure to follow all of the precautions listed 

under “OPERATING INSTRUCTIONS”.

3.  Start the vehicle and turn on the 

vehicle’s headlights. Read the voltage 

on the digital display or press the 

DISPLAY MODE button to set the 

tester to ALTERNATOR % and read 

the alternator percent.

When  the  SC-7500A  is  operating  as  an 

alternator  tester,  the  status  LEDs  light 

under the following conditions.
•  The CHARGED (green) LED will light 

if the output of the charging system is 

at the normally desired level.

•  The CHARGING (yellow) LED does 

not light in the alternator test mode.

•  The CHECK (red) LED lights if the 

VOLTAGE is much higher or lower 

than normally desired.

•  When the tester display mode is set 

to VOLTAGE, the CHARGED and 

CHARGING LEDs won't light (it could 

be testing a battery or an alternator).

ALTERNATOR TESTING NOTES
•  The alternator percent display can 

range from 0 to 199.

•  The DISPLAY MODE cannot be set to 

ALTERNATOR % during charging.