If any of these devices do not work, reconnect the cable connector and repeat the failing operation.

Memory Check

Memory errors might stop system operations, show error messages on the screen, or hang the system.

1.Boot from the diagnostics diskette and start the diagnostic program (please refer to main board.

2.Go to the diagnostic memory in the test items.

3.Press F2 in the test items.

4.Follow the instructions in the message window.

NOTE: Make sure that the DIMM is fully installed into the connector. A loose connection can cause an error.

Power System Check

To verify the symptom of the problem, power on the computer using each of the following power sources:

1.Remove the battery pack.

2.Connect the power adapter and check that power is supplied.

3.Disconnect the power adapter and install the charged battery pack; then check that power is supplied by the battery pack.

If you suspect a power problem, see the appropriate power supply check in the following list:

•“Check the Power Adapter” on page 97

•“Check the Battery Pack” on page 98

Check the Power Adapter

Unplug the power adapter cable from the computer and measure the output voltage at the plug of the power adapter cable. See the following figure

Pin 1: +19 to +20.5V

Pin 2: 0V, Ground

1.If the voltage is not correct, replace the power adapter.

2.If the voltage is within the range, do the following:

•Replace the System board.

•If the problem is not corrected, see “Undetermined Problems” on page 112.

•If the voltage is not correct, go to the next step.

NOTE: An audible noise from the power adapter does not always indicate a defect.

3.If the power-on indicator does not light up, check the power cord of the power adapter for correct continuity and installation.

4.If the operational charge does not work, see “Check the Battery Pack” on page 98.

Chapter 4

97

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Acer 7738G, 7235, 7735G, 7535G, 7735ZG manual Memory Check, Power System Check
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7735, 7235, 7735ZG, 7535G, 7738G specifications

The Acer 7738G is a member of the Acer 7738 series, a well-regarded lineup of laptops designed to deliver an impressive balance between performance, entertainment, and mobile computing. Launched to cater to both multimedia enthusiasts and general users, the 7738G offers a strong mix of features and technologies, making it a noteworthy choice in its category.

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Overall, the Acer 7738G represents a solid blend of performance, design, and multimedia capabilities, making it a compelling choice for users seeking a reliable laptop that meets various computing needs. Its combination of a large screen, powerful hardware, and superior audio makes it a standout option in the mid-range laptop market. Whether for professional use, gaming, or media consumption, the Acer 7738G continues to meet the demands of modern users.
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