Dell Latitude 3400 Service Manual - Page 113

Diagnostic LED, Battery status LED

Get Dell Latitude 3400 PDF manuals and user guides View all Dell Latitude 3400 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 113 highlights

Diagnostic LED This section details the diagnostic features of the battery LED. Instead of beep codes, errors are indicated through the bicolor Battery Charge/Status LED. A specific blink pattern is followed by flashing a pattern of flashes in amber, followed by white. The pattern then repeats. NOTE: The diagnostic pattern consists of a two-digit number being represented by a first group of LED blinks (1-9) in amber, followed by a 1.5 s pause with the LED off, and then a second group of LED blinks (1-9) in white. This is then followed by a three second pause, with the LED off, before repeating over again. Each LED blink takes 0.5 s. The system will not shut down when displaying the Diagnostic Error Codes. Diagnostic Error Codes always supersede any other use of the LED. For instance, on Notebooks, battery codes for Low Battery or Battery Failure situations will not be displayed when Diagnostic Error Codes are being displayed. Table 6. Diagnostic LED Blinking Pattern Amber White Possible Problem 2 1 CPU failure 2 2 System Board failure (included BIOS corruption or ROM error) 2 3 No Memory/ RAM detected 2 4 Memory/RAM failure 2 5 Invalid memory installed 2 6 System board/Chipset Error/Clock failure/Gate A20 failure/Super I/O failure/Keyboard controller failure 2 7 LCD failure 2 8 No power supply to the LCD due to LCD power rail failure 3 1 RTC power failure 3 2 PCI or Video card/chip failure 3 3 BIOS Recovery image not found 3 4 BIOS Recovery image found but invalid 3 5 EC ran into power sequencing failure. 3 6 Flash corruption detected by SBIOS 3 7 Timeout waiting on ME to reply to HECI message Suggested Resolution Replace the system board. Flash latest BIOS version. If problem persists, replace the system board. Confirm that the memory module.. is installed properly. If problem persists, replace the memory module Replace the memory module. Replace the memory module. Replace the system board. Replace the LCD. Replace the system board. Replace the CMOS battery. Replace the system board. Flash latest BIOS version. If problem persists, replace the system board. Flash latest BIOS version. If problem persists, replace the system board. Flash latest BIOS version. If problem persists, replace the system board. Flash latest BIOS version. If problem persists, replace the system board. Flash latest BIOS version. If problem persists, replace the system board. Battery status LED Table 7. Battery status LED Power Source LED behavior AC Adapter Solid White AC Adapter Solid White System Power State S0 S4/S5 Battery Charge Level 0-100% < Fully Charged Troubleshooting 113

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
  • 110
  • 111
  • 112
  • 113
  • 114
  • 115
Diagnostic LED
This section details the diagnostic features of the battery LED.
Instead of beep codes, errors are indicated through the bicolor Battery Charge/Status LED. A specific blink pattern is followed by flashing
a pattern of flashes in amber, followed by white. The pattern then repeats.
NOTE:
The diagnostic pattern consists of a two-digit number being represented by a first group of LED blinks (1–9) in
amber, followed by a 1.5 s pause with the LED off, and then a second group of LED blinks (1–9) in white. This is then
followed by a three second pause, with the LED off, before repeating over again. Each LED blink takes 0.5 s.
The system will not shut down when displaying the Diagnostic Error Codes.
Diagnostic Error Codes always supersede any other use of the LED. For instance, on Notebooks, battery codes for Low Battery or Battery
Failure situations will not be displayed when Diagnostic Error Codes are being displayed.
Table 6. Diagnostic LED
Blinking Pattern
Possible Problem
Suggested Resolution
Amber
White
2
1
CPU failure
Replace the system board.
2
2
System Board failure (included BIOS corruption or
ROM error)
Flash latest BIOS version. If problem persists,
replace the system board.
2
3
No Memory/ RAM detected
Confirm that the memory module.. is installed
properly. If problem persists, replace the memory
module
2
4
Memory/RAM failure
Replace the memory module.
2
5
Invalid memory installed
Replace the memory module.
2
6
System board/Chipset Error/Clock failure/Gate A20
failure/Super I/O failure/Keyboard controller failure
Replace the system board.
2
7
LCD failure
Replace the LCD.
2
8
No power supply to the LCD due to LCD power rail
failure
Replace the system board.
3
1
RTC power failure
Replace the CMOS battery.
3
2
PCI or Video card/chip failure
Replace the system board.
3
3
BIOS Recovery image not found
Flash latest BIOS version. If problem persists,
replace the system board.
3
4
BIOS Recovery image found but invalid
Flash latest BIOS version. If problem persists,
replace the system board.
3
5
EC ran into power sequencing failure.
Flash latest BIOS version. If problem persists,
replace the system board.
3
6
Flash corruption detected by SBIOS
Flash latest BIOS version. If problem persists,
replace the system board.
3
7
Timeout waiting on ME to reply to HECI message
Flash latest BIOS version. If problem persists,
replace the system board.
Battery status LED
Table 7. Battery status LED
Power Source
LED behavior
System Power State
Battery Charge Level
AC Adapter
Solid White
S0
0-100%
AC Adapter
Solid White
S4/S5
< Fully Charged
Troubleshooting
113