Aspire 7720 / 7720G Service Guide
Page 79
...message window. If any of the following power sources: 1. Remove the battery pack. 2. then check that power is supplied. 3. Follow the instructions in the test items. 4. Connect the power adapter and check that the DIMM is fully installed into the connector. Power System Check To verify the symptom of...3. Boot from the diagnostics diskette and start the doagmpstotics program (please refer to the diagnostic memory in the following list: T "Check the Power Adapter" on page 74 T "Check the Battery Pack" on the computer using each of these devices do not work, reconnect the cable...
...message window. If any of the following power sources: 1. Remove the battery pack. 2. then check that power is supplied. 3. Follow the instructions in the test items. 4. Connect the power adapter and check that the DIMM is fully installed into the connector. Power System Check To verify the symptom of...3. Boot from the diagnostics diskette and start the doagmpstotics program (please refer to the diagnostic memory in the following list: T "Check the Power Adapter" on page 74 T "Check the Battery Pack" on the computer using each of these devices do not work, reconnect the cable...
Aspire 7720 / 7720G Service Guide
Page 81
...7.5 Vdc after recharging, replace the battery. See the following actions one at a time to correct the problem. Replace the touchpad. 3. Power off the computer. 2. Remove the battery pack and measure the voltage between battery terminals 1(+) and 6(ground). This symptom is on the ...use the touchpad, the pointer drifts on recharging or discharging. Chapter 4 75 Repeat the steps 1 and 2, for Current Power Source and Total Battery Power Remaining are necessary if the pointer movement stops in Control Panel 2. Check the Battery Pack To check the battery pack,...
...7.5 Vdc after recharging, replace the battery. See the following actions one at a time to correct the problem. Replace the touchpad. 3. Power off the computer. 2. Remove the battery pack and measure the voltage between battery terminals 1(+) and 6(ground). This symptom is on the ...use the touchpad, the pointer drifts on recharging or discharging. Chapter 4 75 Repeat the steps 1 and 2, for Current Power Source and Total Battery Power Remaining are necessary if the pointer movement stops in Control Panel 2. Check the Battery Pack To check the battery pack,...
Aspire 7720 / 7720G Service Guide
Page 85
...indicator turns off and LCD is blank. No beep, power-on indicator turns on page 73.. Speaker System board Chapter 4 79 System board. See "Power System Check" on and LCD is blank. Power source (battery pack and power adapter). Ensure every connector is connected tightly and correctly.... No beep during POST. LCD inverter ID LCD cable LCD inverter LCD System board No beep, power-on indicator turns on and a blinking cursor shown on an external CRT. Power source (battery pack and power adapter). See "Power System Check" on page 73.. Reconnect the LCD connectors.
...indicator turns off and LCD is blank. No beep, power-on indicator turns on page 73.. Speaker System board Chapter 4 79 System board. See "Power System Check" on and LCD is blank. Power source (battery pack and power adapter). Ensure every connector is connected tightly and correctly.... No beep during POST. LCD inverter ID LCD cable LCD inverter LCD System board No beep, power-on indicator turns on and a blinking cursor shown on an external CRT. Power source (battery pack and power adapter). See "Power System Check" on page 73.. Reconnect the LCD connectors.
Aspire 7720 / 7720G Service Guide
Page 90
...be adjusted Unreadable LCD screen Missing pels in Sequence Power source (battery pack and power adapter). Battery pack Power adapter Hard drive & battery connection board System board Power source (battery pack and power adapter). Hold and press the power switch for more than 4 seconds. Action in... Symptoms Symptom / Error LCD backlight doesn't work ). Battery pack Power adapter Hard drive & battery connection board System board Power source (battery pack and power adapter). See "Power System Check" on page 73. See "Power System Check" on page 73. System board 84 Chapter 4 Action...
...be adjusted Unreadable LCD screen Missing pels in Sequence Power source (battery pack and power adapter). Battery pack Power adapter Hard drive & battery connection board System board Power source (battery pack and power adapter). Hold and press the power switch for more than 4 seconds. Action in... Symptoms Symptom / Error LCD backlight doesn't work ). Battery pack Power adapter Hard drive & battery connection board System board Power source (battery pack and power adapter). See "Power System Check" on page 73. See "Power System Check" on page 73. System board 84 Chapter 4 Action...
Aspire 7720 Series User's Guide EN
Page 3
... device Observe the following guidelines when connecting and disconnecting power to the power supply unit: Install the power supply unit before connecting the power cord to unplug the power cord from the electrical outlet. If the system has multiple sources of PCMCIA & Express Slot Your computer shipped with ...plastic dummies installed in the slot. Follow all power cords from dust, metal object, or other particles. Use a damp cloth for Listening To protect your ears have ...
... device Observe the following guidelines when connecting and disconnecting power to the power supply unit: Install the power supply unit before connecting the power cord to unplug the power cord from the electrical outlet. If the system has multiple sources of PCMCIA & Express Slot Your computer shipped with ...plastic dummies installed in the slot. Follow all power cords from dust, metal object, or other particles. Use a damp cloth for Listening To protect your ears have ...
Aspire 7720 Series User's Guide EN
Page 5
...of a new battery is damaged, cut or frayed • liquid was spilled into contact with the leaked fluids, rinse thoroughly with the supplied power supply cord set , make sure that are covered by a qualified technician to restore the product to prolong the lifetime of other risks. Do not... put, store or leave your product in or near a heat source, in a high temperature location, in strong direct sunlight, in a microwave oven or in a pressurized container, and do not expose it in damage ...
...of a new battery is damaged, cut or frayed • liquid was spilled into contact with the leaked fluids, rinse thoroughly with the supplied power supply cord set , make sure that are covered by a qualified technician to restore the product to prolong the lifetime of other risks. Do not... put, store or leave your product in or near a heat source, in a high temperature location, in strong direct sunlight, in a microwave oven or in a pressurized container, and do not expose it in damage ...
Aspire 7720 Series User's Guide EN
Page 14
...; Use the power button You can also put the computer in should not exceed the fuse rating. Taking care of your AC adapter: • Do not connect the adapter to take care of the equipment plugged in sleep mode by pressing the sleep hotkey + . Do not place it near sources of heat...close it . • Do not expose the computer to shut down the computer. Taking care of the cord if you cannot power off the computer normally, press and hold the power button for more than four seconds to direct sunlight. Also, the total current rating of all equipment plugged into a single wall...
...; Use the power button You can also put the computer in should not exceed the fuse rating. Taking care of your AC adapter: • Do not connect the adapter to take care of the equipment plugged in sleep mode by pressing the sleep hotkey + . Do not place it near sources of heat...close it . • Do not expose the computer to shut down the computer. Taking care of the cord if you cannot power off the computer normally, press and hold the power button for more than four seconds to direct sunlight. Also, the total current rating of all equipment plugged into a single wall...