IBM 86604RU - Netfinity 5500 - 4RU, Hardware Maintenance Manual

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Beep/Symptom FRU/Action
1-2-3
(DMA page register
write/read failed) 1. System Board
2. Processor Board
1-2-4
RAM refresh verification
failed 1. System Board
2. Processor Board
1-3-1
(1st 64K RAM test failed) 1. DIMM
2. Processor Board
1-3-2
(1st 64K RAM parity test
failed) 1. DIMM
2. Processor Board
3. System Board
2-1-1
(Secondary DMA register
failed) 1. System Board
2. Processor Board
2-1-2
(Primary DMA register
failed) 1. System Board
2. Processor Board
2-1-3
(Primary interrupt mask
register failed) 1. System Board
2. Processor Board
2-1-4
(Secondary interrupt mask
register failed) 1. System Board
2. Processor Board
2-2-1
(Interrupt vector loading
failed) 1. System Board
2. Processor Board
2-2-2
(Keyboard controller failed) 1. System Board
2-2-3
(CMOS power failure and
checksum checks failed) 1. Battery/CMOS chip
2. System Board
2-2-4
(CMOS configuration info
validation failed) 1. Battery/CMOS chip
2. System Board
2-3-1
(Screen initialization failed) 1. Jumper on J14
2. System Board
2-3-2
(Screen memory failed) 1. System Board
2-3-3
(Screen retrace failed) 1. System Board
2-3-4
(Search for video ROM
failed) 1. System Board
2-4-1
(Video failed, screen
believed operable) 1. System Board
3-1-1
(Timer tick interrupt failed) 1. System Board
3-1-2
(Interval timer channel 2
failed) 1. System Board
Netfinity 5500 - Type 8660
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