Acer Aspire 8940G Acer Aspire 8940 Service Guide - Page 203

No Display Issue If the Display doesn't work, perform the following actions one at a time to correct the problem. Do not replace non-defective FRUs: START Replace LCD panel/ No LCD cable LCD module OK? Power On? goto no power No trouble shooting step Ext. DDRRAM module well No connected? Connect it well Replace Ext. DDRRAM module OK? No Ext. DDR RAM module Replace M/B CPU thermal module well No screw? Screw it well No POST or Video If the POST or video doesn't display, perform the following actions one at a time to correct the problem. 1. Make sure that the internal display is selected. On this notebook model, switching between the internal display and the external display is done by pressing Fn+F5. Reference Product pages for specific model procedures. 2. Make sure the computer has power by checking at least one of the following occurs: • Fans start up • Status LEDs light up If there is no power, see "Power On Issue" on page 192. 3. Drain any stored power by removing the power cable and battery and holding down the power button for 10 seconds. Reconnect the power and reboot the computer. 4. Connect an external monitor to the computer and switch between the internal display and the external display is by pressing Fn+F5 (on this model). If the POST or video appears on the external display, see "LCD Failure" on page 195. 5. Disconnect power and all external devices including port replicators or docking stations. Remove any memory cards and CD/DVD discs. Restart the computer. If the computer boots correctly, add the devices one by one until the failure point is discovered. 6. Reseat the memory modules. 7. Remove the drives (see "Disassembly Process" on page 50). 8. If the Issue is still not resolved, see "Online Support Information" on page 265. Chapter 4 193