IBM IntelliStation M Pro Hardware Maintenance Manual page 110

Beep/symptom
1-2-3
(DMA page register write/read
failed.)
1-3-1
(First 64K RAM test failed.)
2-1-1
(Secondary DMA register failed.)
2-1-2
(Primary DMA register failed.)
2-1-3
(Primary interrupt mask register
failed.)
2-1-4
(Secondary interrupt mask register
failed)
2-2-2
(Keyboard controller failed.)
2-4-1
(Video failed; screen believed
operable.)
3-1-1
(Timer tick interrupt failed.)
3-1-2
(Interval timer channel 2 failed.)
3-1-3
(RAM test failed above address
OFFFFH.)
3-1-4
(Time-Of-Day clock failed.)
3-2-1
(Serial port failed.)
3-2-2
(Parallel port failed.)
3-3-1
(Memory size mismatch occurred.)
3-3-2
(Critical SMBUS error occurred, I2C
error.)
3-3-3
(No operational memory in system.)
100
IBM IntelliStation M Pro Types 6220 and 6230: Hardware Maintenance Manual
FRU/action
System board
1. DIMM
2. Memory adapter
System board
System board
System board
System board
1. Keyboard
2. System board
Video card
System board
System board
1. DIMM
2. System board
1. Battery
2. System board
System board
System board
1. DIMM
2. System board
3. Battery
1. Disconnect the computer power cord from outlet, wait 30 seconds,
and retry.
2. System board.
3. Microprocessor.
4. DIMMs.
1. Install or reseat the memory modules, and then do a 3-boot reset.
(For more information about a 3-boot reset, see "Using the
Configuration/Setup Utility program" on page 11).
2. DIMMs.
3. System board.