Acer R720 User Manual Page 156
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- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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5 Troubleshooting
146
Error beep codes
BIOS POST error beep codes
The following table lists the POST error beep codes. Prior to system
video initialization, BIOS uses these beep codes to inform you of error
conditions. The beep code occurs only when a critical error occurs or
when the BIOS fails to boot to the operating system. Not all error
conditions are supported by the BIOS beep codes.
Number
of Beeps
Description
1, 2, or 3 Memory error
4 – 7 or
9 – 11
Fatal error indicating a possible serious system problem
8 Video error
- Acer Altos R720 Series 1
- FCC notice 3
- Laser compliance statement 4
- Important safety instructions 5
- Contents 7
- 4 BIOS setup 97 8
- 5 Troubleshooting 133 8
- Index 173 9
- 1 System tour 11
- Features summary 13
- SAS controller 14
- Networking 14
- PCI I/O 14
- Graphic interface 15
- Power supply 15
- System fan 15
- I/O ports 15
- 1 System tour 16
- Front bezel 17
- Front panel 18
- Front panel LED indicators 20
- Rear panel 23
- Rear panel LED indicators 24
- Internal components 26
- System boards 27
- Backplane and mid-plane board 29
- Rear view 30
- SAS mid-plane board 31
- System diagnostic LEDs 32
- System jumpers 33
- 2 System setup 35
- Setting up the system 37
- Connecting peripherals 38
- Turning on the system 39
- Power-on problems 40
- Configuring the system OS 41
- Turning off the system 42
- 3 System upgrade 43
- Installation precautions 45
- Opening the server 47
- To remove the front bezel: 48
- To install the front bezel: 49
- To remove the top cover: 50
- To install the top cover: 51
- To remove the CPU air duct: 52
- To install the CPU air duct: 53
- Removing the CPU air dam 54
- Determining drive status 58
- To remove a HDD: 58
- To install a HDD: 59
- Installing and removing a FDD 66
- Installing a tape drive 70
- Installing a sixth HDD 72
- 7 Add or remove PCI cards 76
- To remove a PCI riser board 78
- To install a PCI riser board: 78
- To remove a PCI card: 79
- To install a PCI card 80
- Replacing a system fan 82
- Upgrading the CPU 84
- To install a CPU: 85
- Upgrading the system memory 87
- DDR2 module population order 88
- To remove DIMMs 89
- To remove an ARMC/3 module: 94
- To install an ARMC/3 module: 95
- 3 System upgrade 100
- To remove the RAID cache: 102
- To install the RAID cache: 103
- To remove the RAID BBU: 104
- To install the RAID BBU 105
- 4 BIOS setup 107
- BIOS setup 109
- Entering BIOS setup 110
- Using the BIOS menus 112
- Advanced 114
- Processor 115
- Processor # Information 117
- ATA Controller 120
- Mass Storage 122
- Serial Port 123
- USB Confguration 124
- Security 129
- To remove the User password 130
- Server Management 131
- Console Redirection 133
- System Information 134
- Boot Options 135
- BEV Device # 136
- Boot Manager 138
- Error Manager 139
- Restore User Default 141
- Parameter Description 141
- Upgrading the BIOS 142
- 5 Troubleshooting 143
- Troubleshooting 145
- First steps checklist 146
- Hardware diagnostic testing 147
- Confirming loading of the OS 148
- ODD tray cannot be ejected 150
- ODD drive cannot read a disc 150
- 5 Troubleshooting 152
- Error beep codes 156
- G=Green, R=Red, A=Amber 159
- Appendix A: Acer Altos R720 165
- Setting up the system rack 167
- System rack installation 169
- RAID configuration 179
- Assigning a hot spare disk 182
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