Dell Precision Mobile 產品在整合診斷指示燈方面有著悠久的歷史。指出筆記型電腦在開機自我測試 (POST) 期間的哪一點發生問題。這些可以是:
本文是每個機型上可用代碼以及這些代碼代表意義的參考指南。這些狀況會因不同機型和年份而有所改變。這些指示燈有助於識別目前問題的原因,是縮小任何故障診斷方向的起點。您可以利用此作為起點,縮小所需的相關故障診斷指南範圍。或者,您可以聯絡技術支援以尋求進一步協助,他們也正在尋找這些指示燈。
在這系列的筆記型電腦中,診斷 LED 變更為僅使用下列方法:
此方法僅會使用電池 LED 作為指示燈。診斷 LED 會以電池 LED 顯示,以閃爍顏色告知狀態。
電力來源 | LED 行為 | 系統電源狀態 | 電池電量 |
---|---|---|---|
AC Adapter |
|
On (S0) - Off (S5) |
Fully Charged |
AC Adapter |
|
S0 - S5 |
Less than Fully Charged |
Battery |
|
Hibernate (S4) - S5 |
11-100% |
Battery |
|
S4 - S5 |
Less than 10% |
注意:這些筆記型電腦透過電池計量 LED 以琥珀色或白色的模式閃爍,以判斷下表所列的故障情形:
閃爍模式包含兩組數字,代表:(第一組:琥珀色閃爍,第二組:白色閃爍)。
下表提供關於琥珀色和白色燈的閃爍模式資訊,以及可能的故障診斷解決方案:
LED 閃爍順序 | 故障描述 | 故障 |
---|---|---|
1,1 |
Trusted Platform Module (TPM) Detection Failure |
Motherboard Error |
1,2 |
SPI Flash Failure |
Motherboard Error |
1, 3 |
Hinge Cable Short tripped OCP1 |
|
1, 4 |
Hinge Cable Short tripped OCP2 |
|
1,5 |
Embedded Controller (EC) unable to program i-Fuse |
Motherboard Error |
1,6 |
EC Code flow errors |
Power Issue |
2,1 |
Central Processor Unit (CPU) |
Possible CPU Failure |
2,2 |
Motherboard Basic input Output Setup (BIOS) |
Motherboard Covers BIOS Corruption, or Read-Only Memory (ROM) Error |
2,3 |
Memory |
No memory or Random Access Memory (RAM) detected |
2,4 |
Memory |
Memory or RAM failure |
2,5 |
Memory |
Invalid Memory Installed |
2,6 |
Motherboard Chipset |
Motherboard or Chipset Error |
2,7 |
Liquid Crystal Display (LCD) |
LCD Failure |
2,8 |
LCD |
Motherboard Failure |
3,1 |
Real-Time Clock (RTC) Power Failure |
Complementary Metal-Oxide Semi-Conductor (CMOS) Battery Failure |
3,2 |
Peripheral Component Interconnect (PCI) or Video |
PCI, or Video Card or Chip Failure |
3,4 |
BIOS Recovery 2 |
Recovery Image Found But Invalid |
3,5 |
Power Rail Failure |
EC ran into power sequencing failure |
3,6 |
System Management BIOS (SBIOS) Flash Corruption |
Flash corruption detected by SBIOS |
3,7 |
Management Engine (ME) Error |
Timeout waiting on ME to reply to Host Embedded Controller Interface (HECI) |
4,1 |
Memory Dual Inline memory modeul (DIMM) power rail failure |
Reset and swap the memory among the available slots. If issue persists memory module failure |
4,2 |
CPU Power Cable Connection issue |
Run the Power Supply Unit (PSU) Bult-In Self-Test (BIST). If issue continues Motherboard, PSU, and cabling failure |
在這系列的筆記型電腦中,根據您擁有的筆記型電腦機型,診斷 LED 會使用兩種不同的方法:
電源 LED 狀態 | 說明 |
---|---|
|
|
|
Boot Failure - This is a system fault error condition, including the power supply. Only the +5VSB rail on the power supply is working correctly. |
|
Boot Failure - The computer is receiving electrical power, and power supplied by the power supply is normal. A device might be malfunctioning or incorrectly installed. Refer to the table below for Amber Blinking Pattern diagnostics suggestion and possible failures. |
|
The system is in S0 state, the normal power state of a functioning machine. The BIOS will turn the LED to this state to indicate it has started fetching opcodes. |
|
The system is in a low power state, either S1 or S3. This does not indicate a fault condition. |
LED 行為 | 問題說明 | 後續步驟 |
---|---|---|
1 |
System Board: BIOS, ROM Failure |
|
2 |
No Memory or RAM detected |
|
3 |
System board, Chipset Error, Clock Failure, Gate A20 Failure, Super I/O Failure, Keyboard controller failure |
|
4 |
Memory or RAM failure |
|
5 |
CMOS battery failure |
|
6 |
Video card or chip failure |
|
7 |
CPU Failure |
|
電源 LED 狀態 | 說明 |
---|---|
|
|
|
The system is in S0 state, the normal power state of a functioning machine. The BIOS will turn the LED to this state to indicate it has started fetching opcodes. |
|
The system is in a low power state, either S1 or S3. This does not indicate a fault condition. |
LED 行為 | 問題說明 | 後續步驟 | |
---|---|---|---|
琥珀色 | 白色 | ||
2 |
1 |
CPU Failure |
|
2 |
2 |
System Board: BIOS, ROM Failure |
|
2 |
3 |
No Memory / RAM detected |
|
2 |
4 |
Memory / RAM failure |
|
2 |
5 |
Invalid Memory Installed |
|
2 |
6 |
System board, Chipset Error |
|
2 |
7 |
System board, LCD |
|
3 |
1 |
CMOS battery failure |
|
3 |
2 |
PCI or Video card/chip failure |
|
3 |
3 |
BIOS Recovery 1 |
|
3 |
4 |
BIOS Recovery 2 |
|
3 |
5 |
Power Rail Failure |
|
3 |
6 |
SBIOS Flash Corruption |
|
3 |
7 |
ME Error |
|
這表示電池的電力管理 LED 代碼。
LED 行為 | 電池狀態 |
---|---|
Blinking Amber and White light (repeated) |
An unauthenticated or unsupported non-Dell AC adapter is plugged to your notebook |
Blinking Amber and Steady White light (repeated) |
Temporary battery failure with AC adapter present |
Constantly blinking Amber |
Fatal battery failure with AC adapter present |
Solid White |
The battery in charge mode with AC Adapter |
Light off |
The battery in full charge mode with AC adapter present |
Light off |
The battery in full charge mode without AC adapter present |
Solid Amber |
Battery charge is critically slow (approx. 30 minutes or less of battery life remaining), without AC adapter present |
在此系列中,診斷 LED 變更為僅使用系統狀態 LED 指示燈。診斷 LED 現在以硬碟活動燈號、電池指示燈和 Wi-Fi 指示燈表示。
圖示 | 說明 |
---|---|
|
HDD activity light - Turns white when the laptop reads or writes data |
|
Battery indicator light - Turns on steadily or blinks to indicate battery charge status |
|
Wi-Fi light - Turns on when wireless networking is enabled |
如果筆記型電腦已連接至電力插座,電源和電池指示燈會如下運作:
LED 行為 | 說明 |
---|---|
Solid white color |
Battery charging with AC adapter |
Pulsing white color (slow increase/decrease in illumination) |
The system in Standby, Battery charging with AC adapter |
Off |
System Off, Battery charging with AC adapter (power >90%) |
診斷 LED | 說明 | 後續步驟 | ||
---|---|---|---|---|
硬碟或儲存裝置 LED ![]() |
電池 LED ![]() |
無線 LED ![]() |
||
Blinking |
Solid |
Solid |
The microcontroller is handing control of the system to the processor. This code persists if no processor is detected |
|
Solid |
Blinking |
Solid |
The memory has encountered an error |
|
Blinking |
Blinking |
Blinking |
A system board component is faulty |
|
Blinking |
Blinking |
Solid |
The video card is preventing the system from completing POST |
|
Blinking |
Blinking |
Off |
The keyboard is preventing the system from completing POST |
|
Blinking |
Off |
Blinking |
The USB controller encountered a problem during initialization |
|
Solid |
Blinking |
Blinking |
No SODIMM memory modules are installed |
|
Blinking |
Solid |
Blinking |
The LCD encountered a problem during initialization |
|
Off |
Blinking |
Blinking |
The modem is preventing the system from completing POST |
|
LED 行為 | 說明 |
---|---|
Alternately blinking amber light and blue light |
An unauthenticated or unsupported, non-Dell AC adapter is attached to your laptop |
Alternately blinking amber light with steady blue light |
Temporary battery failure with AC adapter present |
Constantly blinking amber light |
Fatal battery failure with AC adapter present |
Light off |
The battery in full charge mode with AC adapter present |
Blue light on |
The battery in charge mode with AC adapter present |
本系列結合了鍵盤狀態 LED 與機箱上的系統狀態 LED。
這些機型的機箱正面有一個鍵盤狀態 LED 區塊,會穩定亮起綠色、閃爍綠色或熄滅。Dell Technologies 已在下表中包含這些表示意義。
圖示 | 說明 |
---|---|
![]() |
Caps Lock light - Turns on when the Caps Lock is engaged |
![]() |
Scroll Lock light - Turns on when the Scroll Lock is engaged |
![]() |
Number Lock light - Turns on when the Number Lock is enabled |
LED 樣式 (1、2、3) |
LED 樣式 |
說明 | 後續步驟 |
---|---|---|---|
![]() |
ON-FLASH-FLASH |
No SODIMMs are installed |
|
![]() |
FLASH-ON-ON |
System board error |
|
![]() |
FLASH-ON-FLASH |
LCD Panel Error |
|
![]() |
OFF-FLASH-OFF |
Memory compatibility error |
|
![]() |
ON-FLASH-ON |
Memory is detected but has errors |
|
![]() |
OFF-FLASH-FLASH |
Modem Error |
|
![]() |
FLASH-FLASH-FLASH |
System board error |
|
![]() |
FLASH-FLASH-OFF |
Option ROM Error |
|
![]() |
OFF-ON-OFF |
Storage device error |
|
![]() |
FLASH-FLASH-ON |
Video card error |
|
如果筆記型電腦已連接至電力插座,電源或電池指示燈會如下運作:
若要檢查電池電量,請按一下並放開電池充電量表上的狀態按鈕,使電量等級指示燈亮起。每個指示燈大約代表電池總電量的百分之 20。例如,如果有四個指示燈亮起,代表電池剩餘電量剩下百分之 80。如果未亮起指示燈,代表電池沒有電。
若要使用充電量表檢查電池健全狀況,請按住電池充電量表上的狀態按鈕至少 3 秒。如果沒有指示燈亮起,便代表電池狀況良好,且具有超過百分之 80 的原始充電容量。每亮起一顆指示燈便代表電池效能逐漸下降。如果亮起五個指示燈,則代表電池容量在百分之 60 以下,您應考慮更換電池。
Dell Precision 行動工作站從很久以前便具備整合式診斷指示燈。這些可能會發出嗶聲,特定的診斷 LED 則會在開機自我測試 (POST) 期間指出筆記型電腦發生問題。
這些機型的機箱正面有一個鍵盤狀態 LED 區塊,會穩定亮起綠色、閃爍綠色或熄滅。Dell Technologies 已在下表中提供這些表示意義。
圖示 | 說明 |
---|---|
![]() |
Caps Lock light - Turns on when the Caps Lock is engaged |
![]() |
Scroll Lock light - Turns on when the Scroll Lock is engaged |
![]() |
Number Lock light - Turns on when the Number Lock is enabled |
閃爍代碼 | LED 模式 | 說明 | 後續步驟 |
---|---|---|---|
|
Flash-On-On |
The microcontroller is handing control of the system to the processor. This code persists if no processor is detected. |
|
|
On-Flash-On |
The memory has encountered an error. |
|
|
Flash-Flash-Flash |
A system board component is faulty. |
|
|
Flash-Flash-On |
The video card is preventing the system from completing POST. |
|
|
Flash-Flash-Off |
The keyboard is preventing the system from completing POST. |
|
|
Flash-Off-Flash |
The USB controller encountered a problem during initialization. |
|
|
On-Flash-Flash |
No SODIMMs are installed. |
|
|
Flash-On-Flash |
The LCD encountered a problem during initialization. |
|
|
Off-Flash-Flash |
The modem is preventing the system from completing POST. |
|
如果筆記型電腦已連接至電力插座,電源或電池指示燈會如下運作:
如果筆記型電腦使用電池運作,則電池指示燈的運作方式如下:
請參閱此文章中縮寫的定義表格。
縮寫 | 定義 |
---|---|
BIOS |
Basic Input/Output System |
CFG |
Resource Configuration |
CPU |
Central Processing Unit |
DIMM |
Dual In-line Memory Module |
DMA |
Direct Memory Access |
EC |
Embedded Controller |
HECI |
Host Embedded Controller Interface |
LCD |
Liquid Crystal Display |
LED |
Light Emitting Diode |
MBF |
Motherboard Failure |
MBIST |
Memory Built-in Self Test |
ME |
Management Engine |
MEM |
Memory |
NVRAM |
Non-Volatile Random Access Memory |
PCI |
Peripheral Component Interconnect |
POV |
Post-video Activity |
PRV |
Pre-video Activity |
PSU |
Power Supply Unit |
RAM |
Random Access Memory |
RCM |
Recovery Mode |
ROM |
Read Only Memory |
RTC |
Real Time Clock |
S0 |
System Power State S0 – This is the Working State, where your Windows PC is awake. |
S1 |
System Power State S1 – In this sleep state, the CPU is stopped, and your computer is in standby mode. |
S2 |
System Power State S2 – This state is similar to S1 except that the CPU and system cache are lost because the processor loses power. |
S3 |
System Power State S3 – In this state, data is saved to RAM, hard drives, and other hardware are shut down. |
S4 |
System Power State S4 – In this state, RAM and other data are saved to the hard disk. |
S5 |
System Power State S5 - The System is off. |
SBIOS |
Small Board Interface Operating System |
SPI |
Serial Peripheral Interface |
STD |
Boot Hand Off |
STO |
Storage Device |
TPM |
Trusted Platform Module |
USB |
Universal Serial Bus |
VID |
Video |
如果您需要進一步協助,請聯絡 Dell 技術支援。
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