Acer Aspire M5811 Aspire M5811 Desktop Series Service Guide - Page 65

Error Symptom Action/FRU Video memory test failed.Video adapter failed. 1.Remove all non-factory-installed cards. 2.Load default settings (if screen is readable). 3.Main board Display problem: -Incorrect colors No high intensity Missing, broken, or incorrect characters Blank monitor (dark) Blank monitor (bright) Distorted image Unreadable monitor 1.Monitor signal connection/cable. 2.Monitor 3.Video adapter card 4.Main board Other monitor problems Display changing colors. 1.Monitor signal connection/cable 2.Monitor 3.Main board Display problem not listed above (including blank or illegible monitor). 1."Monitor" 2.Load default settings (if screen is readable). 3.Main board Parallel/Serial Ports Execute "Load BIOS Default Settings" in BIOS Setup to confirm ports presence before diagnosing any parallel/serial ports problems. Serial or parallel port loop-back test failed. 1.Make sure that the LPT# or COM# you test is the same as the setting in BIOS Setup. 2.Loop-back. 3.Main board Printing failed. 1.Ensure the printer driver is properly installed. Refer to the printer service manual. 2.Printer. 3.Printer cable. 4.Main board. Printer problems. 1.Refer to the service manual for the printer. Keyboard Some or all keys on keyboard do not work. 1.Keyboard Power Supply Pressing power switch does not turn off system. (Only unplugging the power cord from electrical outlet can turn off the system.) 1.Ensure the Soft-off by PWR-BTTN. in BIOS Setup of Power Management is not set to Instant-off. 2.Power switch cable assembly Pressing power switch does not turn on the system. 1.Ensure the power override switch (situated at the back of the machine, just above the connector for the power cable) is not set to OFF. 2.Power switch cable assembly. Chapter 4 58