Acer Aspire 4350, 4750, 4750G, 4750Z Service Guide
Page 98
...-Related Symptoms Symptom / Error Action in Sequence Power source (battery pack and power adapter). Internal speakers make noise or emit no sound comes from the keyboard) Hard disk drive System board The system doesn't enter hibernation mode Press Fn+o and see if the computer...enters hibernation and four short beeps every minute. See "Power System Check" on page 80. Keyboard (if control is damaged. Audio driver Speaker System board Speaker System board Action in Sequence Power Management-Related Symptoms Symptom / Error Action in Sequence The system will not enter...
...-Related Symptoms Symptom / Error Action in Sequence Power source (battery pack and power adapter). Internal speakers make noise or emit no sound comes from the keyboard) Hard disk drive System board The system doesn't enter hibernation mode Press Fn+o and see if the computer...enters hibernation and four short beeps every minute. See "Power System Check" on page 80. Keyboard (if control is damaged. Audio driver Speaker System board Speaker System board Action in Sequence Power Management-Related Symptoms Symptom / Error Action in Sequence The system will not enter...