Table 3-1. Post Beep Codes - Dell Latitude LM Service Manual

3-2 Dell Latitude LM Systems Service Manual

Table 3-1. POST Beep Codes

Beep Code Error
1-2 Memory module not being
properly identified or used
1-2-2-3 ROM BIOS checksum failure
1-3-1-1 DRAM refresh failure
1-3-1-3 Keyboard controller test fail-
ure
1-3-4-1 RAM failure on address line
nnnn
1-3-4-3 RAM failure on data bits
nnnn of high byte on memory
bus
1-4-1-1 RAM failure on data bits
nnnn of low byte on memory
bus
2-1-2-3 Check ROM copyright
notice failure
2-2-3-1 Interrupt mask register failure Faulty main board
Probable Causes
Faulty memory module or
faulty main board
Faulty main board
Faulty main board
Faulty keyboard or faulty
main board
Faulty memory module or
faulty main board
Faulty memory module or
faulty main board
Faulty memory module or
faulty main board
Faulty main board