IBM 689912U Hardware Maintenance Manual - Page 16

(CONTINUED) 002 (continued) No beep - See "Beep Symptoms" on page 33. One beep; Operating system did not load - Go to Step 006. Two or more beeps - Go to the "Symptom-to-FRU Index" on page 32. 003 OBSERVE THE GREEN LED ON THE TOKEN-RING ADAPTER OR THE LNK LED ON THE ETHERNET ADAPTER FOR 30 SECONDS. IS THE LED ON SOLID FOR THE ENTIRE 30 SECONDS? Yes No 004 The computer might not be connected to an active network or there might be a problem with the network adapter card. See "Network Adapter LED Status" on page 11. 005 Start the PC Enhanced Diagnostics tests. If necessary, refer to "Starting IBM PC Enhanced Diagnostics" on page 9 and "Diagnostics and Test Information" on page 203. If diagnostic programs are not installed on the computer you are servicing, contact the system administrator and ask if the diagnostic programs can be made available over the LAN. If the diagnostics can not be made available over the LAN, use the "Symptom-to-FRU Index" on page 32. 006 IS THERE A READABLE SCREEN WITH NO FLASHING, JITTERING, OR OTHER DISPLAY PROBLEMS? Yes No 007 Go to "Display" on page 31. 008 OBSERVE THE GREEN LED ON THE TOKEN-RING ADAPTER OR THE LNK LED ON THE ETHERNET ADAPTER FOR 30 SECONDS. IS THE LED ON SOLID FOR THE ENTIRE 30 SECONDS? Yes No 009 (Step 009 continues) 6 IBM PC 300/700, IntelliStation Series HMM