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Power-On Sequence
At power-on, the flash boot block code initializes the hardware to a known state, then performs basic
power-on diagnostic tests to determine the integrity of the hardware. Initialization performs the
following functions:
1.
Initializes CPU and memory controller.
2.
Initializes and configures all PCI devices.
3.
Initializes USB devices to a known state.
4.
The unit boots the operating system.
Beep Codes
uBoot provides some feedback during startup according to the following table. If the system cannot
start up due to a catastrophic error (such as no RAM), no beep sounds; return the unit for service. If
the system can start up but encounters some other catastrophic error (such as the eMMC is
unreadable), 3 beeps are played; return the unit for service. In normal operation, 1 beep should
sound. If the system encounters a recoverable error such as the eMMC flash is corrupted, 2 beeps
sound to indicate the user should reflash the unit.
Number of Beeps
Action
0
Return for service.
1
Normal operation.
2
Reflash the unit.
3
Return for service.
Power-On Sequence
5
Содержание t410
Страница 1: ...Troubleshooting Guide HP t410 Smart Zero Client ...
Страница 4: ...iv About This Book ...
Страница 14: ...Initial Troubleshooting 8 Chapter 2 Diagnostics and Troubleshooting ...
Страница 15: ...Initial Troubleshooting Part 2 Troubleshooting 9 ...
Страница 16: ...No Power Part 1 10 Chapter 2 Diagnostics and Troubleshooting ...
Страница 17: ...No Power Part 2 Troubleshooting 11 ...
Страница 18: ...No Power Part 3 12 Chapter 2 Diagnostics and Troubleshooting ...
Страница 19: ...No Video Part 1 Troubleshooting 13 ...
Страница 20: ...No Video Part 2 14 Chapter 2 Diagnostics and Troubleshooting ...
Страница 21: ...No OS Loading Troubleshooting 15 ...
Страница 22: ...Non Functioning Pointing Device or Keyboard 16 Chapter 2 Diagnostics and Troubleshooting ...
Страница 23: ...No Internal Network Connection Troubleshooting 17 ...
Страница 24: ...No Audio 18 Chapter 2 Diagnostics and Troubleshooting ...
Страница 25: ...No IP Address Troubleshooting 19 ...