Dell Precision 400 Service Manual (.pdf) - Page 45
Gate A20 failure, Memory failure above
![]() |
View all Dell Precision 400 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 45 highlights
Table 3-1. POST Beep Codes (continued) Beep Code Error Probable Causes 3-2-4 Keyboard-controller test failure Faulty keyboard controller (defective system board) 3-3-4 3-4-1 Screen initialization failure Screen-retrace test failure Faulty video subsystem (defective video expansion card) 3-4-2 4-2-1 Search for video ROM failure No timer tick Defective system board 4-2-2 Shutdown failure 4-2-3 Gate A20 failure 4-2-4 4-3-1 4-3-3 4-3-4 4-4-1 Unexpected interrupt in protected mode Memory failure above address 0FFFFh Faulty or improperly seated DIMMs Timer-chip counter 2 failure Defective system board Time-of-day clock stopped Bad battery or defective system board Serial/parallel port test failure Faulty I/O chip (defective system board) Beep Codes and Error Messages 3-3
![](/manual_guide/products/dell-precision-400-service-manual-pdf-5d861a1/45.png)