Lenovo Aptiva Hardware Maintenance Manual (HMM) for Aptiva 2173, 2178 and 2179 - Page 382

Beep Symptom 3-3-4 Screen initialization failed. 3-4-1 Screen retrace test detected an error. 3-4-2 POST is searching for video ROM. 4 All other beep code sequences. One long and one short beep during POST. Base 640 KB memory error or shadow RAM error. One long beep and two or three short beeps during POST. (Video error) Three short beeps during POST. Continuous beep. Repeating short beeps. FRU/Action 1. Video Adapter (if installed) 2. System Board 3. Display 1. Video Adapter (if installed) 2. System Board 3. Display 1. Video Adapter (if installed) 2. System Board 1. Video Adapter (if installed) 2. System Board 1. System Board 1. Memory Module 2. System Board 1. Video Adapter (if installed) 2. System Board 1. See "System board memory" on page 358. 2. System Board 1. System Board 1. Keyboard stuck key? 2. Keyboard Cable 3. System Board No beep symptoms Note Type 6868/6878 computer defaults to come up quiet (No beep and no memory count and checkpoint code display) when no errors are detected by POST. To enable Beep and memory count and checkpoint code display when a successful POST occurs: Enable Power on Status in setup. See "Setup Utility program" on page 339. Symptom/Error No beep during POST but computer works correctly. FRU/Action 1. System Board 372 IBM PC 300/IntelliStation/Aptiva Vol 2 HMM