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144 Hardware Maintenance Manual: xSeries 250
1-2-4 (RAM refresh
verification failed)
1. DIMM
2. Processor/PCI Board
3. Memory Card
1-3-1 (1st 64K RAM test
failed)
1. DIMM
2. Processor/PCI Board
3. Memory Card
1-3-2 (1st 64K RAM parity
test failed)
1. DIMM
2. I/O Legacy board
2-1-1 (Secondary DMA
register failed)
1. I/O Legacy Board
2-1-2 (Primary DMA
register failed)
1. I/O Legacy Board
2-1-3 (Primary interrupt
mask register failed)
1. I/O Legacy Board
2-1-4 (Secondary interrupt
mask register failed)
1. I/O Legacy Board
2-2-2 (Keyboard controller
failed)
1. I/O Legacy Board
2. Keyboard
2-2-3 (CMOS power failure
and checksum checks
failed)
1. Battery
2. I/O Legacy board
2-2-4 (CMOS configuration
info validation failed)
1. Battery
2. I/O Legacy board
2-3-1 (Screen initialization
failed)
1. Jumper on J6
2. I/O Legacy Board
2-3-2 (Screen memory
failed)
1. I/O Legacy board
2-3-3 (Screen retrace failed) 1. I/O Legacy board
2-3-4 (Search for video
ROM failed)
1. I/O Legacy board
2-4-1 (Video failed, screen
believed operable)
1. I/O Legacy board
3-1-1 (Timer tick interrupt
failed)
1. I/O Legacy Board
3-1-2 (Interval timer channel
2 failed)
1. I/O Legacy Board
3-1-3 (RAM test failed
above address OFFFF h))
1. DIMM
2. Memory card
3. Processor/PCI board
4. I/O Legacy board
3-1-4 (Time-Of-Day clock
failed)
1. Battery
2. I/O Legacy Board
3-2-1 (Serial port failed) 1. I/O Legacy board
Beep/Symptom FRU/Action