7.The screen will show CODE and a computer generated code number. After the code is displayed, press ENTER.

8.The screen will show PRINT RESULTS and a NO or YES option. To change the print results choice, press the FORWARD or BACK button. Once the correct option has been selected, press ENTER and the tester will print the results of the test or it will go back to the first screen, depending on which option was chosen. NOTE: if you select YES to print; after you’ve printed the number of copies you need, you must select NO to return to the BATTERY TEST screen.

9.Remove the clamps from the battery posts after the completion to end the test.

TO TEST THE CHARGING SYSTEM

1.Connect the tester as specified in CONNECTING THE TESTER.

2.Once you connect the tester to a battery, the screen will come on and display BATTERY TEST and the voltage of the battery the tester is connected to. Press the FORWARD button to get to the SYSTEM TEST, and then press ENTER.

3.Turn off all accessories and loads, such as lights, air conditioning, radio, etc., and close all of the vehicle’s doors and trunk lid before starting the engine.

4.When the engine is started, one of the three following results will be displayed along with the actual reading measured.

•CRANKING VOLTS NORMAL: The system is showing normal draw. Press ENTER to perform the charging system test.

•CRANKING VOLTS LOW: The cranking voltage is below normal limits; troubleshoot the starter with the manufacturer’s recommended procedure.

•CRANKING VOLTS NOT DETECTED: The cranking voltage is not detected.

5.If cranking voltage is normal, press ENTER to begin the charging system test.

6.The display will show PRESS ENTER FOR CHARGING TEST. Press ENTER to continue.

7.The display will show MAKE SURE ALL LOADS ARE OFF. Confirm that all accessories are off and the doors and trunk are closed. Press ENTER to continue.

8.One of the three following results will be displayed along with the actual reading measured.

•LOW CHARGING VOLTS WHEN AT IDLE: The alternator is not providing sufficient current to the battery. Check the belts to ensure the alternator is rotating with the engine running. If the belts are slipping or broken, replace the belts and retest. Check the connections from the alternator to the battery. If the connection is loose or heavily corroded, clean or replace the cable and retest. If the belts and connections are in good condition, the alternator may need to be replaced, have it checked.

•CHARGING SYSTEM NORMAL WHEN AT IDLE: The system is showing normal output from the alternator. No problem is detected.

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Schumacher PST-900X owner manual To Test the Charging System
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PST-900X specifications

The Schumacher PST-900X is a state-of-the-art power supply and battery charger that has rapidly gained popularity among automotive enthusiasts and professionals alike. This versatile device is designed to meet the demands of modern vehicles, providing reliable performance in various applications.

One of the standout features of the PST-900X is its multiple charging modes, including standard, AGM, and gel cell settings. This versatility ensures that it can cater to a wide range of battery types and sizes, making it suitable for use with cars, trucks, SUVs, motorcycles, and even some marine applications. With a maximum output of 9 amps, the PST-900X can quickly and efficiently charge batteries, reducing downtime and ensuring that vehicles are ready to hit the road when needed.

The PST-900X incorporates advanced microprocessor technology, which not only optimizes the charging process but also enhances safety features. This smart technology allows the charger to automatically adjust its output to match the battery's needs, preventing overcharging and prolonging battery life. Furthermore, it includes built-in protections against short circuits, reverse polarity, and overheating, ensuring safe operation in even the most challenging conditions.

Another notable characteristic of the Schumacher PST-900X is its compact and portable design, making it easy to store in a trunk or carry from one vehicle to another. The charger features clear LED indicators that display its status, allowing users to monitor the charging process easily.

The PST-900X also features a durable construction, designed to withstand the rigors of everyday use. Its non-slip grip and rugged exterior ensure that it can handle the challenging environments often encountered by automotive professionals.

In summary, the Schumacher PST-900X is a powerful, versatile, and safe battery charging solution that accommodates various battery types and sizes. With its smart technology, robust safety features, compact design, and user-friendly interface, it stands out as an essential tool for anyone in need of reliable charging capabilities. Whether for home use or professional applications, the PST-900X offers the performance and reliability that users expect from Schumacher products, solidifying its place in the market as a go-to solution for battery maintenance and care.
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