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Power and Signal Distribution
A dual-color LED located on the front panel (bezel) is used to indicate system power status. The
front panel power LED provides a visual indication of key system conditions listed as follows:
NOTE:
[1] Will be accompanied by the same number of beeps, with 2-second pause between cycles. Beeps
stop after 5 cycles.
Table 7-5.
Power LED Indications
Power LED Condition
Steady green Normal full-on operation
Blinks green @ 0.5 Hz Suspend state (S1) or suspend to RAM (S3)
Blinks red 2 times @ 1 Hz [1] Processor thermal shut down. Check air flow, fan operation, and CPU
heat sink.
Blinks red 3 times @ 1 Hz [1] Processor not installed. Install or reseat CPU.
Blinks red 4 times @ 1 Hz [1] Power failure (power supply is overloaded). Check storage devices,
expansion cards and/or system board (CPU power connector P3).
Blinks red 5 times @ 1 Hz [1] Pre-video memory error. Incompatible or incorrectly seated DIMM.
Blinks red 6 times @ 1 Hz [1] Pre-video graphics error. On system with integrated graphics,
check/replace system board. On system with graphics card,
check/replace graphics card.
Blinks red 7 times @ 1 Hz [1] PCA failure. Check/replace system board.
Blinks red 8 times @ 1 Hz [1] Invalid ROM (checksum error). Reflash ROM using CD or replace
system board.
Blinks red 9 times @ 1 Hz [1] System powers on but fails to boot. Check power supply, CPU, system
board.
Blinks red 10 times @ 1 Hz [1] Bad option card.
Blinks red 11 times @ 1 Hz [1] Processor does not support previously enabled feature.
No light System dead. Press and hold power button for less than 4 seconds. If
HD LED turns green then check voltage select switch setting or
expansion cards. If no LED light then check power button/power supply
cables to system board or system board.
- Technical Reference Guide 1
- First Edition (March 2011) 2
- Contents 3
- 3 Processor/Memory Subsystem 4
- 4 System Support 4
- 5 Input/Output Interfaces 4
- 8 SYSTEM BIOS 6
- A Error Messages and Codes 6
- 1.3 Serial Number 8
- 1.4 Notational Conventions 8
- Table 1-1 9
- Table 1-1 (Continued) 10
- Introduction 16
- System Overview 17
- 2.2 Features 18
- Table 2-1 19
- 2.3 System Architecture 20
- Power Supply 21
- 2.3.1 Intel Processor Support 22
- 2.3.2 Chipset 22
- 2.3.3 Support Components 23
- 2.3.4 System Memory 23
- PS/2 Port 24
- Serial port 24
- Parallel port 24
- 2.3.9 Graphics Subsystem 25
- 2.3.10 Audio Subsystem 25
- 2.4 Specifications 26
- Table 2-6 27
- Physical Specifications 27
- Processor/Memory Subsystem 29
- 3.2 Intel Processor 30
- 3.3 Memory Subsystem 32
- 3.3.1 Memory Upgrading 33
- System Support 35
- Software/Driver Layer 36
- Transaction Protocol Layer 36
- 4.2.3 Option ROM Mapping 37
- 4.2.4 PCI Interrupts 37
- 4.2.6 PCI Connectors 38
- PCIe Connectors 39
- 4.3 System Resources 40
- 4.3.2 Direct Memory Access 41
- 4.4.1 Clearing CMOS 42
- 4.5 System Management 43
- Power-On / Setup Password 44
- Setup Password 44
- Cable Lock Provision 44
- I/O Interface Security 44
- Chassis Security 44
- 4.5.2 Power Management 45
- 4.5.3 System Status 46
- 4.6.1 System I/O Map 47
- Table 4-8 48
- System I/O Map 48
- 4.6.2 GPIO Functions 49
- Input/Output Interfaces 51
- 5.2 SATA/eSATA Interfaces 52
- 5.2.2 eSATA interface 53
- 5.3 Serial Interface 54
- 23456789-qw 56
- Table 5-4 58
- Table 5-5 59
- PCH USB Port Mapping 59
- 5.6.1 USB Connector 60
- 5.6.2 USB Cable Data 60
- 5.7 Audio Subsystem 61
- 5.7.1 HD Audio Controller 62
- 5.7.2 HD Audio Link Bus 62
- 5.7.3 Audio Multistreaming 62
- 5.7.4 Audio Specifications 63
- 5.8.1 Wake-On-LAN Support 65
- 5.8.3 NIC Connector 65
- 5.8.4 NIC Specifications 66
- Integrated Graphics Subsystem 67
- Table 6-2 69
- Table 6-3 69
- IGC Supported Resolutions 70
- 6.3 Upgrading 71
- 6.4 Monitor Connectors 71
- 6.4.2 DisplayPort Connector 72
- Power and Signal Distribution 73
- Table 7-1 74
- Table 7-2 76
- Table 7-3 76
- 7.3 Powe r Co nt ro l 77
- Table 7-5 78
- Power LED Indications 78
- Power LED Condition 78
- 7.4 Power Ma na g em en t 79
- Table 7-6 80
- System Power States 80
- State System Condition 80
- 7.5 Signal Distribution 81
- Table 7-7. (Continued) 82
- System BIOS 85
- 8.2 ROM Flashing 86
- 8.3 Boot Functions 87
- 8.3.4 Boot Error Codes 88
- Table 8-1 89
- Boot Error Codes 89
- Table 8-2 90
- 8.5 SMBIOS Support 91
- 8.6 USB Legacy Support 91
- Error Messages and Codes 93
- Table A-2. (Continued) 97
- Error Message Probable Cause 97
- 67xx-xx) 111
- (8601-xx) 112
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