Acer Veriton 3000 Veriton 3000 Service Guide - Page 109

Undetermined Problems If you are still unable to solve a problem, follow the steps below to isolate the problem, get to the root cause, and then replace the defective FRU. 1. Check the power supply voltages. If the voltages are correct continue with the following steps: 2. Power off the system unit. 3. Perform the following checks, one by one, until you have isolated the problem FRU. T Load default settings in Setup. T Check all main board jumper positions and switch settings. T Check all adapter card jumper positions. T Check all device jumper positions. T Check all cables and connectors for proper installation. 4. If the jumpers, switches and voltage settings are correct, remove or disconnect the following, one at a time: T Non-Acer devices T External devices T Any adapter card (modem card, LAN card or video card, if installed) T CD/DVD-ROM drive T Diskette drive T Hard disk drive T DIMM T Processor T Main board 5. Power on the system unit. 6. Repeat steps 2 through 5 until you find the failing device or adapter. Chapter 4 77