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Note: See “System replaceable units” on page 117 to determine which components should be replaced by a field
service technician.
Beep/symptom FRU/action
1-2-1
(Programmable Interval Timer failed.)
v System board
1-2-2
(DMA page register test failed.)
v System board
1-2-3
(DMA page register write/read
failed.)
v System board
1-3-1
(First 64K RAM test failed.)
1. DIMM
2. Memory adapter
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
2-2-2
(Keyboard controller failed.)
1. Keyboard
2. System board
2-2-3
(CMOS power failure and checksum
check failed.)
1. Battery
2. System board
2-4-1
(Video failed; system believed
operable.)
v System board
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. System board
3-1-4
(Time-Of-Day clock failed.)
1. Battery
2. System board
3-2-1
(Serial port failed.)
v System board
3-2-2
(Parallel port failed.)
v System board
3-2-3
(Math coprocessor test failed.)
1. Optional microprocessor
2. Microprocessor
3. System board
84 IntelliStation Z Pro Types 6223 and 6227: Hardware Maintenance Manual and Troubleshooting Guide