Lenovo ThinkPad E30 Hardware Maintenance Manual page 62

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ThinkPad Edge 13" and E30 Hardware Maintenance Manual
Table 2. Numeric error codes (continued)
Symptom or error (beeps, if any)
02F0
CPU ID:xx Failed.
02F5
DMA test failed.
(two short beeps)
02F6
Software NMI failed
(two short beeps)
02F7
Fail-safe timer NMI failed
(two short beeps)
1802
Unauthorized network card is plugged
in—Turn off and remove the miniPCI
network card.
(two short beeps)
1804
Unauthorized WAN card is plugged
in—Power off and remove the WAN card.
FRU or action, in sequence
1. CPU.
2. System board.
1. DIMM.
2. System board.
1. DIMM.
2. System board.
1. DIMM.
2. System board.
1. Remove the Mini PCI network card.
2. System board.
1. Remove the wireless WAN card.
2. System board.