Lenovo ThinkCentre A52 User Manual - Page 92

Miscellaneous error messages Message/Symptom CMOS Backup Battery inaccurate Changing colors Computer will not power-off. See "Power Supply Errors" on page 57. Computer will not RPL from server Computer will not perform a Wake on LAN (if applicable) Dead computer. See "Power Supply Errors" on page 57. Diskette drive in-use light remains on or does not light when drive is active. Flashing cursor with an otherwise blank display. Incorrect memory size during POST FRU/Action 1. CMOS Backup Battery (see Chapter 2, "Safety information," on page 5) 2. System Board Display/Monitor 1. Power Switch 2. System Board 3. Riser card 1. Ensure that network is in startup sequence as first device or first device after diskette 2. Ensure that network adapter is enabled for RPL 3. Network adapter (Advise network administrator of new MAC address) 1. Check power supply and signal cable connections to network adapter 2. Ensure that the operating system settings are set to enable Wake on LAN 3. Ensure Wake on LAN feature is enabled in Setup/Configuration (see "Starting the Setup Utility program" on page 53) 4. Ensure network administrator is using correct MAC address 5. Ensure no interrupt or I/O address conflicts 6. Network adapter (advise network administrator of new MAC address) 1. Power Supply 2. System Board 3. Riser card 1. Diskette Drive 2. System Board 3. Diskette Drive Cable 4. Riser card 1. System Board 2. Primary Hard Disk Drive 3. Hard Disk Drive Cable 4. Riser card 1. Run the Memory tests 2. Memory Module 3. System Board 86 Hardware Maintenance Manual