Acer Aspire Z1650 Acer Aspire Z1650 Desktop Service Guide - Page 97

Index of Symptom-to-FRU Error Messages To use the information in this section to diagnose a problem: 1. Find the error symptom in the left column. 2. If directed to a check procedure, replace the FRU indicated in the check procedure. If no check procedure is indicated, the first Action/FRU item listed in the right column is the most likely cause.. NOTE: If you cannot find a symptom or an error in this list and the problem remains, see "Undetermined Problems" on page 65. Processor/Processor Fan-related Symptoms Symptom/Error Processor fan does not run but power supply fan runs. Processor test failed. Action/FRU • Ensure the system is not in power saving mode. • With the system powered on, measure the voltage of the processor fan connector. Its reading should be +12Vdc. If the reading shows normal, but the fan still does not work, then replace the heat sink fan. • Mainboard • Processor • Mainboard NOTE: Normally, the processor fan should be operative, and the processor clock setting should be exactly set to match its speed requirement before diagnosing any processor problems. Mainboard and Memory-related Symptoms Symptom/Error Memory test failed. Incorrect memory size shown or repeated during POST. System works but fails to enter power saving mode when the Power Management Mode is set to Enabled. Blinking cursor only; system does not work. Action/FRU • Memory module • Mainboard • Insert the memory modules in the DIMM sockets properly, then reboot the system. • Memory module • Mainboard • Enter CMOS Setup and load the default settings. In Windows systems, check settings in Power Management Property of the Control Panel. • Reload software from Recovery CD. • IDE drive connection/cables • IDE disk drives • See "Undetermined Problems". • Mainboard NOTE: Ensure the memory modules are installed properly and the contact leads are clean before diagnosing any system problems. Aspire Z1650 AIO Computer Service Guide 89