Power Problems; Printer Problems - Dell OptiPlex 760 Service Manual

Power Problems

WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best
practices information, see the Regulatory Compliance Homepage on www.dell.com at www.dell.com/regulatory_compliance.
If the power light is blue and the computer is not responding —
If the power light is blinking green —
normal operation.
If the power light is off — The computer is either turned off or is not receiving power.
Reseat the power cable in the power connector on the back of the computer and the electrical outlet.
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Bypass power strips, power extension cables, and other power protection devices to verify that the computer turns on properly.
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Ensure that any power strips being used are plugged into an electrical outlet and are turned on.
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Ensure that the electrical outlet is working by testing it with another device, such as a lamp.
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Ensure that the main power cable and front panel cable are securely connected to the system board (see the "System Board Components" section for
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your computer).
If the power light is blinking amber —
Ensure that the voltage selection switch is set to match the AC power at your location (if applicable).
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Ensure that all components and cables are properly installed and securely connected to the system board (see the "System Board Components"
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section for your computer).
If the power light is steady amber —
Ensure that the processor power cable is securely connected to the system board power connector (POWER2) (see "System Board Components"
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section of the Service Manual for your computer).
Remove and then reinstall all memory modules (see Memory).
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Remove and then reinstall any expansion cards, including graphics cards (see the "Removing PCI and PCI Express Cards" section for your computer).
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Eliminate interference — Some possible causes of interference are:
Power, keyboard, and mouse extension cables
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Too many devices connected to the same power strip
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Multiple power strips connected to the same electrical outlet
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Printer Problems

WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best
practices information, see the Regulatory Compliance Homepage on www.dell.com at www.dell.com/regulatory_compliance.
NOTE: If you need technical assistance for your printer, contact the printer's manufacturer.
Check the printer documentation —
Ensure that the printer is turned on
Check the printer cable connections —
See the printer documentation for cable connection information.
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Ensure that the printer cables are securely connected to the printer and the computer.
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Test the electrical outlet — Ensure that the electrical outlet is working by testing it with another device, such as a lamp.
Verify that the printer is recognized by Windows —
Windows XP:
1. Click Start® Control Panel® Printers and Other Hardware® View installed printers or fax printers.
2. If the printer is listed, right-click the printer icon.
3. Click Properties® Ports. For a parallel printer, ensure that the Print to the following port(s): setting is LPT1 (Printer Port). For a USB printer, ensure
that the Print to the following port(s): setting is USB.
See Diagnostic
The computer is in standby mode. Press a key on the keyboard, move the mouse, or press the power button to resume
The computer is receiving electrical power, but an internal power problem may exist.
A device may be malfunctioning or incorrectly installed.
See the printer documentation for setup and troubleshooting information.
Lights.