Aspire TC-651, Service Manual

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Troubleshooting
This chapter provides troubleshooting information for the ASPIRE TC-651 Service Guide
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Start up problems during assembly

Power-On Self-Test (POST)
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POST Error Messages List
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Error Symptoms List

Undetermined Problems
Start up problems during assembly
After assembling the PC for the first time you may experience some start up problems. Before calling for
technical support or returning for warranty, this chapter may help to address some of the common questions
using some basic troubleshooting tips.
a) System does not power up and the fans are not running.
1. Disassemble the PC to remove the VGA adaptor card, DDR memory, LAN, USB and other peripherals
including keyboard and mouse. Leave only the motherboard, CPU with CPU cooler and power supply
connected. Turn on again to see if the CPU and power supply fans are running.
2. Make sure to remove any unused screws or other metal objects such as screwdrivers from the inside
PC case. This is to prevent damage from short circuit.
3. Check the CPU FAN connector is connected to the motherboard.
4. For Intel platforms check the pins on the CPU socket for damage or bent. A bent pin may cause failure
to boot and sometimes permanent damage from short circuit.
5. Check the 12V power connector is connected to the motherboard.
6. Check that the 12V power & ATX connectors are fully inserted into the motherboard connectors. Make
sure the latches of the cable and connector are locked into place.
b) Power is on, fans are running but there is no display
1. Make sure the monitor is turned on and the monitor cable is properly connected to the PC.
2. Check the VGA adapter card (if applicable) is inserted properly.
3. Listen for beep sounds. If you are using internal PC speaker make sure it is connected.
a. continuous beeping : memory not detected
b. 1 long beep and 2 short beeps looping : VGA not detected
c) The PC suddenly shuts down while booting up.
1. The CPU may experience overheating so it will shutdown to protect itself. Ensure the CPU fan is-
working properly.
2. From the BIOS setting, try to disable the Smart fan function to let the fan run at default speed.
Doing a Load Optimised Default will also disable the Smart fan.
Chapter5