Encyclopedia-of-laptop-failure-China-children

notebook drive common breakdown solutions on the
notebook drive most common barrier is mechanical failure , Second only is circuit aspects fault, and circuit fault in the by user adjustment improper caused of fault to than Yuan devices damage of fault more was more , so in split solutions or maintenance light drive device Shi not casually adjustment notebook optical drive internal various electric bit device
notebook optical drive common fault main to has three class: operation fault And the chance of failure and the necessity barrier.
1, and operation fault for example driven error or installed does not correct caused in Windows or DOS in the found does not to notebook light drive; notebook optical drive connection line or jumper errors makes notebook light drive cannot using; CD line no connection good cannot listen to CD; pen remember Honko drive is not correct placed in drag disk Shang caused optical drive does not read disk ; CD deformation or dirty caused screen does not clear or pause or horse match grams phenomenon serious; demolition does not When the optical drive caused internal continuous line due to the broken or loose people with disabilities.

hardware failures
first, not power (power led not lit)
1. Check that the external adapter notebook is properly connected, external adapter is working properly.
2. If you only use batteries for power, check the battery model number for the original distribution pool; if the battery is full of ; the battery installed in the 3. Check the DC plates are normal;
4. Inspection, maintenance board
, Department of power supply led is lit, but the second the organization does not run, no 1. Press the power switch and four seconds to power off, then heavy new start checking whether started is .
2. External CRT monitor is display properly.
3. Check if the memory plug securely .
4. Clear the CMOS information.
5. Try to replace the memory, CPU, charge plate.
6. Repair motherboard
three, display images are not clear not normal.
2. Check that the display driver installation correct; resolution is suitable for current LCD size and type of .
3. Check the LCD line and Board are connected properly; check for proper LCD connection to connect to LCD.
4. Check the backlight control board is not normal.
5. Inspect the motherboard Northbridge on if there is a deficiency of cold welding and welding is now .
6. Try to replace the motherboard.
four, displayed
1-free. Through the status indicator check whether the Commission is in a sleep state, if it is a sleep state, according to open source key to wake up.
2. Check the external monitor is connected is normal.
3. Checking whether to include the power supply.
4. Check the LCD line attached at both ends normally.

common failures of judgement
1 and power on the system does not detect the optical drive check optical drive jumper jump correctly or not; and then check the optical drive IDE interface is pluggable bad, if not, can be good plug and plug tightly; finally , Has may is data line damage
2, and access box fault performance for cannot access box or access box does not smooth, may causes and the excluded method is, access box warehouse motor plug needle contact bad or motor burning destroyed--can heavy plug or replaced; Access box machinery structure in the of pass dynamic with (rubber band) loose playing sliding
3 Fault fault is can read the disc cannot be read) or poor reading ability. Optical drive long or frequently used it VCD or listen to the CD, laser head and lens dirty or aging.
�� home we must not make with sales on the market of some low inferior lens cleaning disc, for these plates of brushing too hard but scratched lens, and , shortening the life of optical drive.
4, laser signal path fault refers to the laser head and circuit board connections between lines, a laser head and other circuit information exchange channel. Fault 5, spindle fault and its driving circuit is closed for the second a, called a spindle signal through road, this circuit also consists of an as shares is not the same. Due to the laser head it and information access is servo circuit for information communication. Thus, in fault there are many similar , but due to the laser head information when pathways in and out of the box Dell Inspiron B130 battery, its continuous damaged wiring easily folds, like the shaft signaling failure.

2. Check the touch pad wiring is connected is correct.
3. Replace the touchpad
4. Check that the keyboard controller chip there is a deficiency of cold welding and welding phenomena
5. Replace the motherboard
seven Dell latitude d830 Battery, serial port devices do not work
1. Check the BIOS settings for serial port is set to "ENABLED"
2. With SIO test program is normal.
3. Check that the serial device is connected correctly.
4. If a serial mouse, set the review is closed IOS; closed built-in trackpad; Device Manager ndows 98 or Me; check for identification to a serial port mouse ; check the serial mouse driver is installed properly.
5. Replace the serial device.
6. Check the .
7. Replace the motherboard. 1, parallel port devices do not work. Check the BIOS settings for ABLED".
2. PIO test program is normal.
3. Check that all connections are .
4. Check that the external device is powered on 5. Check the printer mode settings is not correct.
6. Check the .
7. Replace the motherboard.
, USB port does not work
1. Check the BIOS setting for USB is set to "ENABLED".
2. Reseat the USB device, check whether a connection is normal.
3. Check the USB port driver and the USB device driver is installed properly.
4. Replace the USB device, or contact USB equipment manufacturer for technical support. ��ENABLED�� www.pc3 4 5.c n
5. Replace the motherboard.
ten, sound card is not working properly
1. AUDIO detector test is normal.
2. Check the volume control 3. Check the sound source (CD, tape, ) is normal.
4. Check the sound card driver is installed .
5. Check the speaker and microphone wiring is normal.
6. Replace the audio Board
7. Replace the motherboard.
XI, fan questions
1. Test the program detect whether 2. FAN zxcsky32645 cable is plugged in?
3. Whether the FAN good?
4. M/B part of CONNECTER welding good?
5. Board bad
12, KB issues
1. KB test program found off

notebook computers due to its structure are unique, determine its dimension complexity. Notebook a computer after the computer , its maintenance principle and common desktop is basically the same. if you are a laptop brain user and its dimensional knowledge of interest, then you can see this, here are some remember the failure analysis of computer acting process, might make you some help.

notebook power adapter causes the symptoms
--notebook computer power lit.
---laptop intermittent panic.
--laptop power adapter fever.
--portable optical drive read DVD or easily panic or .
--laptop running line program easily panic or power off .
these symptoms are related to remember thisPower adapter-related

notebook system board failure raised the following phenomena characteristic
---laptop powered on not recognized after portable hard drive.
---portable power not recognized after laptop drive.
---laptop battery not charging.
---portable timing or indefinite shutdown.
---portable keyboard failed.
---portable power sometimes when power off.
---portable timing panic

an article on: laptop maintenance next: notebook 2, and contingency fault notebook optical drive random occurs of fault, as machine within integrated circuit dell vostro 1000 battery, capacitance , resistance, transistor, Yuan device pieces early failure or suddenly sexual loss bad, or some movement frequently of machinery parts suddenly damage, This class fault although rare, but must after maintenance and the replaced only can will fault excluded , So I so failure is also called " " failure.
3 hp pavilion dv5000 Battery, and inevitability fault notebook optical drive in using a time Hou inevitable occurs of fault, main has: laser diode aging, read disc time variable long even cannot read disc; laser head component in the light learn lens dirty/performance variable difference ,, caused audio/video lost really or panic; machinery transmission machine frame due to wear , Deformation, loose arising out of failure.
it should be noted is the inevitability of it quality of the product, but also take user of human action and put maintenance and the use of frequency and environment

notebook common fault-boot off judgment
---laptop motherboard BIOS-hardware ---laptop laptop LCD U fails; screen does nothing, is also a power on the system is not reason.
--notebook computer signal lost out port appears fault will caused power does not light
---notebook computer Board video control chip appears fault will caused power does not light
---notebook computer video appears fault will caused power does not light
---notebook computer memory appears fault will caused power does not light
Notebook battery filled does not into electric- hardware fault judgment
---notebook computer power adapter failure will cause the battery not charging into
---laptop battery fails will cause a battery to no electricity.
---notebook computer Board power control chip appears fault will caused battery filled does not into electric
---notebook computer Board other line appears fault will introduction up battery filled does not into electric

these symptoms are related to notebook motherboard related

notebook drive describes
notebook optical drives �C mechanical drive moving parts.
notebook drive-the laser head components.
notebook optical drive failure leading to since the two parts (notebook CD drive).
a, and driven machinery part main by 3 a small motor for center group into: disc loaded institutions by controlled system into, and out box warehouse (loaded) of motor composition, main completed CD into box (loaded) and out box (uninstall); laser head into to institutions by into to motor driven , completed laser head along CD of RADIUS direction by within outside or by outward within smooth mobile , To fast speed reading disc data; spindle rotation mechanism of main spindle electric driven complete disc rotation, generally use the DD control , that the hinge of the disc is the primary the hinge axis motor.
the second, laser head components of various optical drive of the most important and the most vulnerable part, main types are single light beam laser head, three (multiple)- overall, ordinary single beam laser head primarily by Semiconductor Laser , semi-transparent prisms/collimator lens , and photosensitive detector and actuators parts constitute

notebook keyboard if it impaired due to symptoms
notebook fault there are open and not press.
when the notebook in the process of using a key portable keyboard now use failed.

5. Backlight Control Board has been replaced or LCD.
6. Replace the motherboard. 98/Win Me
1. Confirm that the power management features in the operating in the system is started and set correctly.
2. The battery charge after three hours and then use.
3. In Windows 98 or Windows Me the battery charging and discharging two .
4. Replace the battery.
six, trackpad not working
1. Check to see if there is an external mouse connected in the MOUSE with tests program detects correctly.

2. Keyboard cable is plugged in?
3. M/B part of CONNECTER is there a PIN wrong or other adverse
4. Board bad
software fault classification of 1. Is not displayed properly;
2. Sound card does not work
3. Modem,LAN not can work
4. QSB
5 cannot be used. Some hardware drive does not normally use
14,
1 operating system class. Slow
2 of the operating system. Sometimes panic
3. Model does not support a
4 of the operating system. Not shutdown properly
5. Sleep panic
15, application class
1. Application conflicts cause the system to panic
2. Application causes no system and no shutdown
3 correctly. Application conflict cannot up to

notebook does not recognition peripherals-hardware fault judgment
---notebook computer related peripherals hardware appears fault will introduction up notebook does not recognition peripherals
---notebook computer BIOS appears fault set error will caused notebook does not recognition peripherals < WBR>��
---laptop motherboard peripheral interface fails will cause the notebook does not recognize peripherals
---laptop motherboard can also cause a failure notes the disown peripherals not also note this computer does not power on.