2024年2月24日发(作者：管忆秋)
戴尔dell 5420-7420 拆机示意图
因为dell 5420 和 7420的构造设计是一样的，只是配置不同。。最直接的差别就是显卡，一个是GT 630 一个是GT 640
Product Overview
Features Inspiron™ 7420/14R Inspiron™ N4110
Processor type
Intel® Core i3
Intel® Core i5
Intel® Core i7
(Sandy Bridge and Ivy Bridge Processors)
Click here to learn more
Intel® Core i3
Intel® Core i5
Intel® Core i7
(Sandy Bridge and Ivy Bridge Processors)
Click here to learn more
System Chipset
Intel® HM77 Chipset
Click here to learn more
Intel® HM77 Chipset
Click here to learn more
Memory
1333MHz DDR3 - Sandy Bridge Processors
1600MHz DDR3 - Ivy Bridge Processors
Click here to learn more
1333MHz DDR3 - Sandy Bridge Processors
1600MHz DDR3 - Ivy Bridge Processors
Click here to learn more
Memory min/max
2 GB / 8 GB
LCD types
14.0" HD WLED TrueLife (1366 X 768)
14.0" HD+ WLED TrueLife (optional) (1600 X 900)
Click here to learn more
14.0" HD WLED TrueLife (1366 X 768)
14.0" HD+ WLED TrueLife (optional) (1600 X
900)
Click here to learn more
Graphics
Integrated
Intel HD Graphics 3000
(Sandy Bridge Processors)
Intel HD Graphics 4000
(IvyBridge Processors)
Discrete
nVidia GeForce GT 640M
Click here to learn more
Integrated
Intel HD Graphics 3000
(Sandy Bridge Processors)
Intel HD Graphics 4000
(IvyBridge Processors)
Discrete
nVidia GeForce GT 630M
Click here to learn more
Audio
Conexant CX20672-217 Audio controller
Click here to learn more
Conexant CX20672-217 Audio controller
Click here to learn more
Hard drive
interface
SATA HDD 2.5"
mSATA SSD
Click here to learn more
SATA HDD 2.5"
mSATA SSD
Click here to learn more
Media bay
options
12.7 mm SATA tray load DVD+/-RW, BD
12.7 mm SATA tray load DVD+/-RW, BD Combo and
BD-RE
Combo and BD-RE
Wireless options
1703 WiFi + Bluetooth 4.0 Half Mini Card
1704 WiFi + Bluetooth 4.0 Half Mini Card
WLAN 1901 WiFi + Bluetooth 4.0 Half Mini Card
Intel® 2230 WiFi + Bluetooth 4.0 Half Mini Card
Click here to learn more
1703 WiFi + Bluetooth 4.0 Half Mini Card
1704 WiFi + Bluetooth 4.0 Half Mini Card
WLAN 1901 WiFi + Bluetooth 4.0 Half Mini
Card
Intel® 2230 WiFi + Bluetooth 4.0 Half Mini
Camera
720p HD (1280x720) + Digital Microphone
Click here to learn more
720p HD (1280x720) + Digital Microphone
NIC (LOM)
10/100/1000 NIC (without LED)
Click here to learn more
10/100/1000 NIC (without LED)
Click here to learn more
I/O card slots
8-in-1 Media Card Reader
Click here to learn more
Connectors
1x VGA
1x HDMI
3x USB 3.0
1x USB 3.0 with Power Share
NIC (without LED)
1x Microphone/stereo in
1x headphone/speaker out
8-in-1 Media Card Reader
1x VGA
1x HDMI
3x USB 3.0
1x USB 3.0 with Power Share
NIC (without LED)
1x Microphone/stereo in
1x headphone/speaker out
8-in-1 Media Card Reader
Operating system
Microsoft Windows® 7
AC adapter
65W / 90W
Click here to learn more
Battery
6-Cell 2.2AHr/48Whr battery pack
Click here to learn more
6-Cell 2.2AHr/48Whr battery pack
Click here to learn more
Weight
configurable to less than 2.40 kg / 5.30 lb configurable to less than 2.40 kg / 5.30 lb
前面/正面
Features on the front side of the chassis of the Inspiron™ 7420/14R laptop are as follows:
Chassis Front View Features and Locations
1.
Power Indicator. 电源指示灯
2.
Hard Drive activity light. 硬盘读写指示灯
3.
Battery status light - Indicates the Battery Status. 电池充电指示灯
4.
Wireless status light - Indicates if the Wireless is turned on/off. 无线指示灯
5.
8-in-1 Media Card Reader - Provides a fast and convenient way to view and share digital photos, music, and videos stored on a media cFor more information, see the section on Media Card Reader. 读卡器
Front LCD Area 前面 屏幕区域
Features on the front side (LCD Area) of the chassis of the Inspiron™ 7420/14R laptop are as follows:
Chassis Front View Features and Locations
1.
Built in Microphone - Used to capture audio sounds. 麦克风接口
2.
Built in Camera - Used to capture moving images and snapshots. 摄像头
3. LCD.
Front Keyboard and Palmrest Area
Features on the front side (Keyboard and Palmrest area) of the chassis of the Inspiron™ 7420/14R laptop are as follows:
Chassis Front View Features and Locations
1.
Power button - Used to power on the laptop. 开关
2.
Keyboard. 键盘
3.
Touchpad. 触摸板
4. Left Touchpad button.
5. Right Touchpad button.
6. Dell Audio With Preset Switch button.
7. Dell Instant Launch button.
8. Windows Mobility Center button.
Chassis Left 左边
Features on the left side of the chassis of the Inspiron™ 7420/14R laptop are as follows:
Chassis left view features and locations
1. Power adapter connector
2. VGA connector - Used to connect an external display.
3. Exhaust Grill.
4. HDMI connector - Connector port for devices supporting audio/video signals in HDMI format.
5. USB 3.0 connector with PowerShare - Used to connect powered USB devices such as printer.
6. USB 3.0 connector - Used to connect USB devices, such as flash memory, a mouse, keyboard or printer.
7. Microphone connector - Used to connect an external microphone to the system.
8. Headphone/Microphone combo connector - Used to connect audio peripherals. Attach headphones or speakers to the connector.
Chassis Right
Features on the right side of the chassis of the Inspiron™ 7420/14R laptop are as follows:
Chassis right view features and locations
1. USB 3.0 port - Used to connect USB devices, such as flash memory, a mouse, keyboard or printer.
2. Optical Drive activity light.
3. Optical Drive eject button.
4. USB 3.0 port - Used to connect USB devices, such as flash memory, a mouse, keyboard or printer.
5. Network connector (RJ-45) - Used to connect the laptop to a network.
6. Kensington lock slot - Used to attach a commercially available antitheft device to the laptop.
下面开始拆机。。。左右两边卡扣推开
下面拆硬盘和内存的盖子。。去掉螺丝就可以了。
下面拆内存和硬盘
拔掉数据线，之后去掉固定的四颗螺丝
拆光驱。。去掉固定的螺丝。。一拉就出来了
拆键盘，有些配置如果有背光的，那拆的时候要注意背光的数据线
下面拆C壳。第一次拆可能有点紧，最好慢慢来，因为太重了可能会导致卡扣断了。去掉背面图示的螺丝，建议去掉背面的所有的螺丝，以免有遗漏
拔掉触摸板数据线
右上角的功能键的数据线
左上角的开关数据线
拔掉屏线
去掉图示的螺丝。。不要有遗漏
C壳的卡扣有图示这么多，从左上角或者右上角开始翘起，，
拆电源线。拔掉线，去掉螺丝，就可以拿掉了
下面随便那屏幕拿下来，这样好拆主板. 去掉固定的螺丝，拔掉天线
拆风扇，太简单了，。，拔掉接头，就可以拿掉了
拆无线网卡， 也很简单，去固定螺丝
拆喇叭，拔掉接口，注意喇叭的连接线。比较细
拆主板。。去掉螺丝就可以拿起来了
拆小板。去掉固定螺丝。
后面拆散热器和CPU就很简单了。就不一一说明了
Ok。。完了
附录：报警声的含义
Beep Code Overview
Beeps Description Possible Cause
1
BIOS ROM checksum in progress or failure
System board failure, covers BIOS corruption or
ROM errors.
2
No Memory (RAM) detected Memory or Memory slot failure
3
chipset Error (North and South bridge error,
DMA/IMR/Timer error)
Time-Of-Day Clock test failure
Gate A20 failure
Super I/O chip failure
Keyboard controller test failure
System board failure
4
5
6
Memory read / write failure
Real Time Clock (RTC) power fail
Video BIOS test failure
Memory failure
CMOS battery failure
Video subsystem failure
7
8
CPU Cache test failure
LCD
Processor failure
LCD failure
2024年2月24日发(作者：管忆秋)
戴尔dell 5420-7420 拆机示意图
因为dell 5420 和 7420的构造设计是一样的，只是配置不同。。最直接的差别就是显卡，一个是GT 630 一个是GT 640
Product Overview
Features Inspiron™ 7420/14R Inspiron™ N4110
Processor type
Intel® Core i3
Intel® Core i5
Intel® Core i7
(Sandy Bridge and Ivy Bridge Processors)
Click here to learn more
Intel® Core i3
Intel® Core i5
Intel® Core i7
(Sandy Bridge and Ivy Bridge Processors)
Click here to learn more
System Chipset
Intel® HM77 Chipset
Click here to learn more
Intel® HM77 Chipset
Click here to learn more
Memory
1333MHz DDR3 - Sandy Bridge Processors
1600MHz DDR3 - Ivy Bridge Processors
Click here to learn more
1333MHz DDR3 - Sandy Bridge Processors
1600MHz DDR3 - Ivy Bridge Processors
Click here to learn more
Memory min/max
2 GB / 8 GB
LCD types
14.0" HD WLED TrueLife (1366 X 768)
14.0" HD+ WLED TrueLife (optional) (1600 X 900)
Click here to learn more
14.0" HD WLED TrueLife (1366 X 768)
14.0" HD+ WLED TrueLife (optional) (1600 X
900)
Click here to learn more
Graphics
Integrated
Intel HD Graphics 3000
(Sandy Bridge Processors)
Intel HD Graphics 4000
(IvyBridge Processors)
Discrete
nVidia GeForce GT 640M
Click here to learn more
Integrated
Intel HD Graphics 3000
(Sandy Bridge Processors)
Intel HD Graphics 4000
(IvyBridge Processors)
Discrete
nVidia GeForce GT 630M
Click here to learn more
Audio
Conexant CX20672-217 Audio controller
Click here to learn more
Conexant CX20672-217 Audio controller
Click here to learn more
Hard drive
interface
SATA HDD 2.5"
mSATA SSD
Click here to learn more
SATA HDD 2.5"
mSATA SSD
Click here to learn more
Media bay
options
12.7 mm SATA tray load DVD+/-RW, BD
12.7 mm SATA tray load DVD+/-RW, BD Combo and
BD-RE
Combo and BD-RE
Wireless options
1703 WiFi + Bluetooth 4.0 Half Mini Card
1704 WiFi + Bluetooth 4.0 Half Mini Card
WLAN 1901 WiFi + Bluetooth 4.0 Half Mini Card
Intel® 2230 WiFi + Bluetooth 4.0 Half Mini Card
Click here to learn more
1703 WiFi + Bluetooth 4.0 Half Mini Card
1704 WiFi + Bluetooth 4.0 Half Mini Card
WLAN 1901 WiFi + Bluetooth 4.0 Half Mini
Card
Intel® 2230 WiFi + Bluetooth 4.0 Half Mini
Camera
720p HD (1280x720) + Digital Microphone
Click here to learn more
720p HD (1280x720) + Digital Microphone
NIC (LOM)
10/100/1000 NIC (without LED)
Click here to learn more
10/100/1000 NIC (without LED)
Click here to learn more
I/O card slots
8-in-1 Media Card Reader
Click here to learn more
Connectors
1x VGA
1x HDMI
3x USB 3.0
1x USB 3.0 with Power Share
NIC (without LED)
1x Microphone/stereo in
1x headphone/speaker out
8-in-1 Media Card Reader
1x VGA
1x HDMI
3x USB 3.0
1x USB 3.0 with Power Share
NIC (without LED)
1x Microphone/stereo in
1x headphone/speaker out
8-in-1 Media Card Reader
Operating system
Microsoft Windows® 7
AC adapter
65W / 90W
Click here to learn more
Battery
6-Cell 2.2AHr/48Whr battery pack
Click here to learn more
6-Cell 2.2AHr/48Whr battery pack
Click here to learn more
Weight
configurable to less than 2.40 kg / 5.30 lb configurable to less than 2.40 kg / 5.30 lb
前面/正面
Features on the front side of the chassis of the Inspiron™ 7420/14R laptop are as follows:
Chassis Front View Features and Locations
1.
Power Indicator. 电源指示灯
2.
Hard Drive activity light. 硬盘读写指示灯
3.
Battery status light - Indicates the Battery Status. 电池充电指示灯
4.
Wireless status light - Indicates if the Wireless is turned on/off. 无线指示灯
5.
8-in-1 Media Card Reader - Provides a fast and convenient way to view and share digital photos, music, and videos stored on a media cFor more information, see the section on Media Card Reader. 读卡器
Front LCD Area 前面 屏幕区域
Features on the front side (LCD Area) of the chassis of the Inspiron™ 7420/14R laptop are as follows:
Chassis Front View Features and Locations
1.
Built in Microphone - Used to capture audio sounds. 麦克风接口
2.
Built in Camera - Used to capture moving images and snapshots. 摄像头
3. LCD.
Front Keyboard and Palmrest Area
Features on the front side (Keyboard and Palmrest area) of the chassis of the Inspiron™ 7420/14R laptop are as follows:
Chassis Front View Features and Locations
1.
Power button - Used to power on the laptop. 开关
2.
Keyboard. 键盘
3.
Touchpad. 触摸板
4. Left Touchpad button.
5. Right Touchpad button.
6. Dell Audio With Preset Switch button.
7. Dell Instant Launch button.
8. Windows Mobility Center button.
Chassis Left 左边
Features on the left side of the chassis of the Inspiron™ 7420/14R laptop are as follows:
Chassis left view features and locations
1. Power adapter connector
2. VGA connector - Used to connect an external display.
3. Exhaust Grill.
4. HDMI connector - Connector port for devices supporting audio/video signals in HDMI format.
5. USB 3.0 connector with PowerShare - Used to connect powered USB devices such as printer.
6. USB 3.0 connector - Used to connect USB devices, such as flash memory, a mouse, keyboard or printer.
7. Microphone connector - Used to connect an external microphone to the system.
8. Headphone/Microphone combo connector - Used to connect audio peripherals. Attach headphones or speakers to the connector.
Chassis Right
Features on the right side of the chassis of the Inspiron™ 7420/14R laptop are as follows:
Chassis right view features and locations
1. USB 3.0 port - Used to connect USB devices, such as flash memory, a mouse, keyboard or printer.
2. Optical Drive activity light.
3. Optical Drive eject button.
4. USB 3.0 port - Used to connect USB devices, such as flash memory, a mouse, keyboard or printer.
5. Network connector (RJ-45) - Used to connect the laptop to a network.
6. Kensington lock slot - Used to attach a commercially available antitheft device to the laptop.
下面开始拆机。。。左右两边卡扣推开
下面拆硬盘和内存的盖子。。去掉螺丝就可以了。
下面拆内存和硬盘
拔掉数据线，之后去掉固定的四颗螺丝
拆光驱。。去掉固定的螺丝。。一拉就出来了
拆键盘，有些配置如果有背光的，那拆的时候要注意背光的数据线
下面拆C壳。第一次拆可能有点紧，最好慢慢来，因为太重了可能会导致卡扣断了。去掉背面图示的螺丝，建议去掉背面的所有的螺丝，以免有遗漏
拔掉触摸板数据线
右上角的功能键的数据线
左上角的开关数据线
拔掉屏线
去掉图示的螺丝。。不要有遗漏
C壳的卡扣有图示这么多，从左上角或者右上角开始翘起，，
拆电源线。拔掉线，去掉螺丝，就可以拿掉了
下面随便那屏幕拿下来，这样好拆主板. 去掉固定的螺丝，拔掉天线
拆风扇，太简单了，。，拔掉接头，就可以拿掉了
拆无线网卡， 也很简单，去固定螺丝
拆喇叭，拔掉接口，注意喇叭的连接线。比较细
拆主板。。去掉螺丝就可以拿起来了
拆小板。去掉固定螺丝。
后面拆散热器和CPU就很简单了。就不一一说明了
Ok。。完了
附录：报警声的含义
Beep Code Overview
Beeps Description Possible Cause
1
BIOS ROM checksum in progress or failure
System board failure, covers BIOS corruption or
ROM errors.
2
No Memory (RAM) detected Memory or Memory slot failure
3
chipset Error (North and South bridge error,
DMA/IMR/Timer error)
Time-Of-Day Clock test failure
Gate A20 failure
Super I/O chip failure
Keyboard controller test failure
System board failure
4
5
6
Memory read / write failure
Real Time Clock (RTC) power fail
Video BIOS test failure
Memory failure
CMOS battery failure
Video subsystem failure
7
8
CPU Cache test failure
LCD
Processor failure
LCD failure