Dell OptiPlex G1, Service Manual

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3-2 Dell OptiPlex G1 Managed PC Systems Service Manual
1-3-1 Main-memory refresh verifi-
cation failure Faulty or improperly seated
DIMM or defective system
board
1-3-2 No memory installed No memory installed or faulty
or improperly seated DIMM
1-3-3
1-3-4
1-4-1
1-4-2
2-1-1
through
2-4-4
Chip or data line failure in the
first 64 KB of main memory
Odd/even logic failure in the
first 64 KB of main memory
Address line failure in the
first 64 KB of main memory
Parity failure in the first
64 KB of main memory
Bit failure in the first 64 KB of
main memory
Faulty or improperly seated
DIMM
3-1-1
3-1-2
3-1-3
3-1-4
Slave DMA-register failure
Master DMA-register failure
Master interrupt-mask regis-
ter failure
Slave interrupt-mask register
failure
Defective system board
3-2-4 Keyboard-controller test
failure Faulty keyboard controller
(defective system board)
3-3-4
3-4-1
3-4-2
Screen initialization failure
Screen-retrace test failure
Search for video ROM failure
Faulty video subsystem
(defective system board)
4-2-1
4-2-2
4-2-3
4-2-4
No timer tick
Shutdown failure
Gate A20 failure
Unexpected interrupt in
protected mode
Defective system board
4-3-1 Memory failure above
address 0FFFFh Faulty or improperly seated
DIMM
4-3-3 Timer-chip counter 2 failure Defective system board
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