Acer Aspire 7750Z Acer Aspire 7750, 7750G, 7750Z Notebook Service Guide - Page 126

Power On Issues 0 If the system does not power on, perform the following. Start Check AC/Battery Power on Check Daughter/B & FFC Whether OK OK NG Swap AC/Battery OK NG Swap Daughter/B Re-plug PWR FFC Swap M/B Figure 4-1. Power On Issue Computer Shuts Down Intermittently 0 If the system powers off at intervals, perform the following. 1. Makes sure the power cable is properly connected to the computer and the electrical outlet. 2. Remove all extension cables between the computer and the outlet. 3. Remove all surge protectors between the computer and the electrical outlet. Plug the computer directly into a known serviceable electrical outlet. 4. Disconnect the power and open the casing to check the Thermal Unit (refer to Thermal Unit Failure) and fan airways are free of obstructions. 5. Remove all external and non-essential hardware connected to the computer that are not necessary to boot the computer to the failure point. 6. Remove any recently installed software. 7. If the Issue is still not resolved, refer to Online Support Information. 4-4 Troubleshooting