H007813 - SERVER 320 TRAPS WITH 8 PARITY SIMMS INSTALLED SYMPTOM: PCI/EISA versions of the IBM PC Server 320, with eight(8) PARITY memory SIMMs installed, trap or hang. These errors occur intermittently under heavy system load and have been seen with NetWare, OS/2, SCO, and Windows NT. PROBLEM ISOLATION AIDS: - The system is an 8640 PCI/EISA model with PARITY memory. EOS memory systems are NOT affected. - The system board is fully populated with 8MB PARITY SIMMs, with 32MB PARITY SIMMs, or with a combination of both SIMMs. - All SIMMs are double-sided with twenty-four(24) DRAM modules. - Removing a pair of SIMMs fixes the problem. - Diagnostics usually run without error. Follow this procedure: 1. Verify that the processor speed jumpers, W2, W6, W40 are set correctly. Refer to the system label for processor speed jumper settings. 2. Verify that the amount of installed memory matches the amount saved in the EISA Configuration. 3. If 1 or 2 were changed, boot the operating system, and monitor the system. This may have been the problem. 4. If the operating system is stable, exit this tip. 5. If the operating system still traps or hangs, proceed. 6. Remove the memory SIMMs from sockets U46 and U47. 7. Update the EISA Configuration. 8. Boot the operating system and monitor the system for proper operation. FIX: 1. If the operating system is now stable, replace the system board with FRU P/N06H2173, reinstall the memory, and update the EISA Configuration. 2. If the operating system still traps or hangs, continue with failure isolation until the failing component is identified. NetWare is a trademark of Novell Inc. SCO is a trademark of The Santa Cruz Organization, Inc. Windows NT is a trademark of Microsoft Corp. May 23, 1996