No-Beep Symptoms - IBM IntelliStation A Pro 6224 Hardware Maintenance Manual And Troubleshooting Manual

Note: See Chapter 7, "Parts listing, Type 6224," on page 107 to determine which components are replaceable by the
customer (CRU), and which components must be replaced by a field service technician (FRU).
Beep/symptom
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)
3-2-3
(Math coprocessor test failed)
3-2-4
(Failure comparing CMOS memory
size against actual)
3-3-1
(Memory size mismatch occurred.)
3-3-2
(Critical SMBUS error occurred; I2C
bus error occurred)
3-3-3
(No memory installed)

No-beep symptoms

Note: See Chapter 7, "Parts listing, Type 6224," on page 107 to determine which components are replaceable by the
customer (CRU), and which components must be replaced by a field service technician (FRU).
No-beep symptom
No beep during POST.
No beep, no video, and system
attention LED (if present) is
off.
No beep, no video, and system
attention LED (if present) is on.
FRU/action
v System board
v System board
1. DIMM
2. System board
1. Battery
2. System board
v System board
v System board
1. Microprocessor
2. System board
1. DIMM
2. Battery
3. System board
1. DIMM
2. Battery
3. System board
1. Disconnect computer power, wait 30 seconds, and retry.
2. System board
3. Microprocessor
4. DIMMs
1. Install or reseat the memory modules; then, do a three-boot reset.
2. DIMMs.
3. System board.
FRU/action
v System board
v System board
v See "Undetermined problems" on page 104.
Chapter 6. Symptom-to-FRU index
85