User manual SONY VAIO VGN-FW590GKB

[. . . ] Safety notices: multilingual translations . Handling devices that are sensitive to discharge . Restoring the preloaded system Passwords . Detecting system information with Power system checkout . [. . . ] v If the timer conditions are satisfied in suspend mode. When the power is turned on, the computer returns from hibernation mode and resumes operation. The hibernation file in the boot record on the hard disk drive is read, and system status is restored from the hard disk drive. 34 ThinkPad G40, G41 Checkout guide Checkout guide Use the following procedures as a guide in identifying and correcting problems with the ThinkPad computer. Note: The diagnostic tests are intended to test only ThinkPad products. The use of non-ThinkPad products, prototype cards, or modified options can lead to false indications of errors and invalid system responses. Identify the failing symptoms in as much detail as possible. Try to re-create the failure by running the diagnostic test or by repeating the operation. Testing the computer The ThinkPad computer has a test program called PC-Doctor® for DOS (hereafter called PC-Doctor. ) You can detect errors by running the diagnostics test included in PC-Doctor. This section is an overview of the procedure. For details that depend on model-unique functions, refer to "Product overview" on page 45. For some possible configurations of the computer, PC-Doctor might not run correctly. To avoid this problem, you need to initialize the computer setup by use of the BIOS Setup Utility before you run PC-Doctor. If you suspect a power problem, see the appropriate one of the following power supply checkouts: v "Checking the ac adapter" v "Checking operational charging" on page 39 v "Checking the battery pack" on page 39 v "Checking the backup battery" on page 40 Checking the ac adapter You are here because the computer fails only when the ac adapter is used: v If the power-on indicator does not turn on, check the power cord of the ac adapter for correct continuity and installation. v If the computer does not charge during operation, go to Checking operational charging. To check the ac adapter, do the following: 1. Unplug the ac adapter cable from the computer. Measure the output voltage at the plug of the ac adapter cable. See the following figure: Pin 1 Voltage (V dc) Vcc_+ 16V Ground Vcc_+ 16V Ground 1 3 4 2 2 3 4 3. If the voltage is not correct, replace the ac adapter. If the voltage is acceptable, do the following: v Replace the system board. 38 ThinkPad G40, G41 Checkout guide v If the problem persists, go to "Product overview" on page 45. Note: Noise from the ac adapter does not always indicate a defect. Checking operational charging To check whether the battery charges properly during operation, use a discharged battery pack or a battery pack that has less than 50% of the total power remaining when installed in the computer. If the battery status indicator or icon does not turn on, remove the battery pack and let it return to room temperature. If the charge indicator or icon still does not turn on, replace the battery pack. [. . . ] Any reference to a Lenovo product, program, or service is not intended to state or imply that only that Lenovo product, program, or service may be used. Any functionally equivalent product, program, or service that does not infringe any Lenovo intellectual property right may be used instead. However, it is the user's responsibility to evaluate and verify the operation of any other product, program, or service. Lenovo may have patents or pending patent applications covering subject matter described in this document. [. . . ]