HP ProDesk 600 G6 PCI Micro Maintenance and Service Guide - Page 65
Solving power problems, Power supply shuts down intermittently, Computer turned off automatically
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Solving power problems These tables provide common causes and solutions for power problems. Power supply shuts down intermittently Use this information to troubleshoot the computer. Cause Solution If the computer has a voltage selector, voltage selector switch on Select the proper AC voltage using the selector switch. rear of computer chassis (some models) not switched to correct line voltage (115 V or 230 V). Power supply will not turn on because of internal power supply fault. Replace the power supply. Computer turned off automatically, power light blinks red two times followed by a twosecond pause, and the computer beeps two times (Beeps stop after fifth iteration but lights continue blinking) Use this information to troubleshoot the computer. Cause Processor thermal protection activated. A fan might be blocked or not turning, or the heat sink is not properly attached to the processor. Solution 1. Be sure that the computer air vents are not blocked and the processor cooling fan is running. 2. Open the access panel, press the power button, and see if the processor fan (or other system fan) spins. If the fan does not spin, be sure that the fan cable is plugged onto the system board header. 3. If the fan is plugged in and not spinning, replace it. Power light blinks red four times followed by a two-second pause and the computer beeps four times (Beeps stop after fifth iteration but lights continue blinking) Use this information to troubleshoot the computer. Cause Power failure (power supply is overloaded). Solution 1. If the computer has a voltage selector, check that the voltage selector, located on the rear of the power supply (some ENWW Solving power problems 57
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