IBM 8685 Hardware Maintenance Manual - Page 140
Beep/symptom, FRU/action, Battery, Recover BIOS, System board, Secondary DMA register
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Page 140 highlights
Note: See "System" on page 162 to determine which components should be replaced by a field service technician. Beep/symptom FRU/action 1-1-3 (CMOS write/read test failed) 1. Battery 2. System board 1-1-4 (BIOS EEPROM checksum failed) 1. Recover BIOS 2. System board 1-2-1 (Programmable Interval Timer v System board failed) 1-2-2 (DMA initialization failed) v System board 1-2-3 (DMA page register write/read v System board failed) 1-2-4 (RAM refresh verification failed) 1. DIMM 2. Memory card 3. System board 1-3-1 (first 64K RAM test failed) 1. DIMM 2. Memory card 2-1-1 (Secondary DMA register failed) v System board 2-1-2 (Primary DMA register failed) v System board 2-1-3 (Primary interrupt mask register failed) v System board 2-1-4 (Secondary interrupt mask register failed) v System board 2-2-1 (Interrupt vector loading failed) v System board 2-2-2 (Keyboard controller failed) 1. System board 2. Keyboard 2-2-3 (CMOS power failure and checksum checks failed) 1. Battery 2. System board 2-2-4 (CMOS configuration information validation failed) 1. Battery 2. System board 2-3-1 (Screen initialization failed) v System board 2-3-2 (Screen memory failed) v System board 2-3-3 (Screen retrace failed) v System board 2-3-4 (Search for video ROM failed) v System board 2-4-1 (Video failed; screen believed v System board operable) 3-1-1 (Timer tick interrupt failed) v System board 3-1-2 (Interval timer channel 2 failed) v System board 3-1-3 (RAM test failed above address OFFFFH)) 1. DIMM 2. Memory card 3. System board 130 xSeries 255 Type 8685: Hardware Maintenance Manual and Troubleshooting Guide