Printer can not print how to do?
Here step by step for the camp to introduce the tactics to deal with the printer can not print, so hope that preventive measures, in an emergency visibility mindset, quick solution to the difficulties of the printer can not print.
First check whether the printer is online
There may be loose your power cord leading to no boot, it may be because the reasons set with the printer you do not have online. If you are using, then use the network printer, there may be other side of the computer is turned off, so you can not line up. So if you see the computer online when you are prompted, Please check the situation.
MOTHERBOARD REPAIRING STEPS
MOTHERBOARD REPAIR
maintenance information
Repair parts
Do not turn fault detection method and sequence
1. Check the working conditions of the three CPU
l Power Supply
Basic mobile phone repair tutorial
Section phone repair knowledge
1, fault classification
1, caused the causes of cell phone
(1), the menu settings failure: failure is not, strictly speaking, if no calls are perhaps for the owner to set up call forwarding; play no phone is set up outbound throttling. The baffling problem, first with total reset.
(2), using failure: improper operation generally refers to the user, dislocation caused by adjustment. More common are the following categories:
1), mechanical damage. As the operation or method of application of excessive force is not correct, resulting in mobile devices rupture, deformation, and the module pin loose weld failures and other causes. In addition, flip off axis, the antenna was broken and thrown split casing, water, broken screen, also belong to this type of failure.
1, fault classification
1, caused the causes of cell phone
(1), the menu settings failure: failure is not, strictly speaking, if no calls are perhaps for the owner to set up call forwarding; play no phone is set up outbound throttling. The baffling problem, first with total reset.
(2), using failure: improper operation generally refers to the user, dislocation caused by adjustment. More common are the following categories:
1), mechanical damage. As the operation or method of application of excessive force is not correct, resulting in mobile devices rupture, deformation, and the module pin loose weld failures and other causes. In addition, flip off axis, the antenna was broken and thrown split casing, water, broken screen, also belong to this type of failure.
ATX power supply repair tips
Failure phenomenon, no output measured and found to plug 9 feet No +5 vsb voltage, so you can not judge the work of auxiliary power.
Ic3 l7805 three-terminal regulator measuring inputs and outputs were not voltage, but sometimes there is 20v input voltage, output has 5v voltage, then short the normal voltage output pin 13-14, but then again, the short cable disconnect pass the time nor the output voltage. Auxiliary power collector voltage measurement from the multimeter instructions have been found from vibration, it was suspected that a fault in the transformer secondary winding side。 Replacement capacitor c04, disconnect l7805 input, still no voltage secondary winding, again in accordance with the power failure did not come from the vibration of the end winding from the initial search fails, found that when the switch with a multimeter measuring the collector, the voltage times be back to normal and the enhanced effect by vibration is not to find fault confidence.
Survey found that r02 has become infinite resistance, the role of this resistance is filtered rectified mains voltage into the base switch is open power from the vibration produced a prerequisite, with a 390k resistor to replace r02, troubleshooting .
Ic3 l7805 three-terminal regulator measuring inputs and outputs were not voltage, but sometimes there is 20v input voltage, output has 5v voltage, then short the normal voltage output pin 13-14, but then again, the short cable disconnect pass the time nor the output voltage. Auxiliary power collector voltage measurement from the multimeter instructions have been found from vibration, it was suspected that a fault in the transformer secondary winding side。 Replacement capacitor c04, disconnect l7805 input, still no voltage secondary winding, again in accordance with the power failure did not come from the vibration of the end winding from the initial search fails, found that when the switch with a multimeter measuring the collector, the voltage times be back to normal and the enhanced effect by vibration is not to find fault confidence.
Survey found that r02 has become infinite resistance, the role of this resistance is filtered rectified mains voltage into the base switch is open power from the vibration produced a prerequisite, with a 390k resistor to replace r02, troubleshooting .
Laptop power supply principle Explained
Notebook without power fault conditions in several ways, namely:
First, use the adapter without electricity, but the use of battery power-normal;
Second, use the adapter power-normal, but without using battery power;
Third, use the adapter and the battery can not power up.
The three failures are very common in notebook computers, in order to maintain the three failures, must have the laptop power-up process.
The following simple analysis of the notebook's power-process.
When we press the power switch after the low (or high) of PWRSW # signal triggered PC87591, PC87591 and then issued a PM-PWRBTN # signals trigger the ICH, ICH back to laptop mode PC87591 three signals (Figure in step 6), and then the main power supply notebook computers to trigger the switch, such as the main power supply, CPU power supply, etc., and then follow the steps in the diagram in power. As shown.
First, use the adapter without electricity, but the use of battery power-normal;
Second, use the adapter power-normal, but without using battery power;
Third, use the adapter and the battery can not power up.
The three failures are very common in notebook computers, in order to maintain the three failures, must have the laptop power-up process.
The following simple analysis of the notebook's power-process.
When we press the power switch after the low (or high) of PWRSW # signal triggered PC87591, PC87591 and then issued a PM-PWRBTN # signals trigger the ICH, ICH back to laptop mode PC87591 three signals (Figure in step 6), and then the main power supply notebook computers to trigger the switch, such as the main power supply, CPU power supply, etc., and then follow the steps in the diagram in power. As shown.
MOBILE PHONE SERVICING- BGA CHIP REMOVAL GUIDE
BGA chip removal and welding
1. Guide
With the rapid global development of mobile communication technology, many handset makers compete to launch new compact and powerful mobile phones. In these new phones, the widespread adoption of advanced BGAIC (Balld arrays ball grid array package), which has spread the technology can significantly reduce the volume of mobile phone, enhancements, reduced power consumption, lower production costs. But, like all things beneficial to have disadvantages, BGA package IC is easy to fall caused by Weld, and to the maintenance work led to great difficulties.
BGA packaged chips are used precision optical instrument patch installed, error is 0.01mm, while the actual maintenance work, most of the repairs were not like the SMT equipment, even with all welding hot air and feel installation, little chance of success.
1. Guide
With the rapid global development of mobile communication technology, many handset makers compete to launch new compact and powerful mobile phones. In these new phones, the widespread adoption of advanced BGAIC (Balld arrays ball grid array package), which has spread the technology can significantly reduce the volume of mobile phone, enhancements, reduced power consumption, lower production costs. But, like all things beneficial to have disadvantages, BGA package IC is easy to fall caused by Weld, and to the maintenance work led to great difficulties.
BGA packaged chips are used precision optical instrument patch installed, error is 0.01mm, while the actual maintenance work, most of the repairs were not like the SMT equipment, even with all welding hot air and feel installation, little chance of success.
BASIC ELECTRONICS-FET TESTING
As the FET structure, principle and common transistor different conditions in the amateur use multimeter to determine the method is not the same as before the test what your hands touch touch water pipe, or ground, to let go of the body's charge.
1.G pole (gate) of the judge: multimeter with R × 100 files, each FET were measured resistance between two feet (both positive and negative to the test once), there should be a pair of feet to several hundred ohms resistance (such as are high-value,
1.G pole (gate) of the judge: multimeter with R × 100 files, each FET were measured resistance between two feet (both positive and negative to the test once), there should be a pair of feet to several hundred ohms resistance (such as are high-value,
BASIC ELECTRONIC-BASIC COMPONENTS DETECTION METHODS
Components of the detection is an appliance repair basics, how to accurately and effectively detect the components of the relevant parameters to determine whether components of the normal, not a stereotyped thing, must be based on different components use different methods to determine components of normal or not. Especially for beginners, proficiency testing methods commonly used components and experience is necessary, the following test on the common experience of electronic components and test methods are introduced for the right.
1, resistor detection methods and experience:
1, resistor detection methods and experience:
BASIC ELECTRONICS- USE OF CAPACITORS
1. DC blocking: role is to stop by and let the exchange by DC.
2. Bypass (decoupling): for the exchange of circuit components in parallel to provide certain low- impedance path.
2. Bypass (decoupling): for the exchange of circuit components in parallel to provide certain low- impedance path.
Detection of laser diode
(A) determine the pin order of the multimeter to put R × 1K block, in accordance with the detection of common diode positive and negative resistance method, can be laser diode of the pin in the order determined.
EPSON C4X series printer maintenance
Printer connected to the mains, press the printer's power button when the green indicator light does not shine, the printer does not work, press the key for the red ink light is not bright, it could be the printer's power supply broke down.
The first step to take off the printer's plastic cover. Off-white plastic cover with plastic buckle 7 is connected with a gray base with a screwdriver to push up one by one plastic button, you can take off the plastic cover and then remove the paper into the frame. Connected to electricity, with a multimeter to check the availability of CN2 on the 36 V voltage , shown in Figure 2, if no voltage,
The first step to take off the printer's plastic cover. Off-white plastic cover with plastic buckle 7 is connected with a gray base with a screwdriver to push up one by one plastic button, you can take off the plastic cover and then remove the paper into the frame. Connected to electricity, with a multimeter to check the availability of CN2 on the 36 V voltage , shown in Figure 2, if no voltage,
Add Printer Tip Print Spooler service is not running solution
When this problem occurs, first check-related services have not started
In the Start - Run - CMD - SERVICES. MSC start the service component or on the desktop select "My Computer" right choice "management";
In the Start - Run - CMD - SERVICES. MSC start the service component or on the desktop select "My Computer" right choice "management";
HOW TO REPAIR COMPUTER MOTHERBOARD
MOTHERBOARD NOT BOOT
a. check whether the short circuit CPU voltage
b. MOS tube 5V and 3V voltage is normal
c. check motherboard VID0-VID5 signal
d. 12V Power Management Chip 0 ohm affect, MOS capacitor for the wrong side of the tube will affect the voltage
e. VID_GOOD signal
a. check whether the short circuit CPU voltage
b. MOS tube 5V and 3V voltage is normal
c. check motherboard VID0-VID5 signal
d. 12V Power Management Chip 0 ohm affect, MOS capacitor for the wrong side of the tube will affect the voltage
e. VID_GOOD signal
Reform yourself making mobile phone charger, USB data cable and headset
Reform yourself making mobile phone charger, USB data cable and headphones
Many reasons made cell phones for models, charger, USB data cable and earphones since the original machine can not buy the charger cable and headset, to tell you here yourself, use the other line conversion method: This method is suitable for a certain practical ability of the machine friendly, if a novice, it is recommended not to do the same action! Many domestic phone because the model because, charger, USB data cable and earphones after the original machine can not buy the charger cable and headset, to tell you here yourself, with other line conversion method: this method is suitable for a certain Friends of practical ability of the machine, if a novice, it is recommended not to do the same action!
Tools ready: Tools to prepare:
1, multimeter a 1, a multimeter
2: The full line phone socket pin plug a 2: The full line phone socket pin plug 1
3: The maintenance of a power table (need short-circuit protection) 3: The maintenance of a power table (need short-circuit protection)
Many reasons made cell phones for models, charger, USB data cable and earphones since the original machine can not buy the charger cable and headset, to tell you here yourself, use the other line conversion method: This method is suitable for a certain practical ability of the machine friendly, if a novice, it is recommended not to do the same action! Many domestic phone because the model because, charger, USB data cable and earphones after the original machine can not buy the charger cable and headset, to tell you here yourself, with other line conversion method: this method is suitable for a certain Friends of practical ability of the machine, if a novice, it is recommended not to do the same action!
Tools ready: Tools to prepare:
1, multimeter a 1, a multimeter
2: The full line phone socket pin plug a 2: The full line phone socket pin plug 1
3: The maintenance of a power table (need short-circuit protection) 3: The maintenance of a power table (need short-circuit protection)
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Posts (Atom)
Printer can not print how to do?
Here step by step for the camp to introduce the tactics to deal with the printer can not print, so hope that preventive measures, in an emergency visibility mindset, quick solution to the difficulties of the printer can not print.
First check whether the printer is online
There may be loose your power cord leading to no boot, it may be because the reasons set with the printer you do not have online. If you are using, then use the network printer, there may be other side of the computer is turned off, so you can not line up. So if you see the computer online when you are prompted, Please check the situation.
MOTHERBOARD REPAIRING STEPS
MOTHERBOARD REPAIR
maintenance informationRepair parts
Do not turn fault detection method and sequence
1. Check the working conditions of the three CPU
l Power Supply
Basic mobile phone repair tutorial
Section phone repair knowledge
1, fault classification
1, caused the causes of cell phone
(1), the menu settings failure: failure is not, strictly speaking, if no calls are perhaps for the owner to set up call forwarding; play no phone is set up outbound throttling. The baffling problem, first with total reset.
(2), using failure: improper operation generally refers to the user, dislocation caused by adjustment. More common are the following categories:
1), mechanical damage. As the operation or method of application of excessive force is not correct, resulting in mobile devices rupture, deformation, and the module pin loose weld failures and other causes. In addition, flip off axis, the antenna was broken and thrown split casing, water, broken screen, also belong to this type of failure.
1, fault classification
1, caused the causes of cell phone
(1), the menu settings failure: failure is not, strictly speaking, if no calls are perhaps for the owner to set up call forwarding; play no phone is set up outbound throttling. The baffling problem, first with total reset.
(2), using failure: improper operation generally refers to the user, dislocation caused by adjustment. More common are the following categories:
1), mechanical damage. As the operation or method of application of excessive force is not correct, resulting in mobile devices rupture, deformation, and the module pin loose weld failures and other causes. In addition, flip off axis, the antenna was broken and thrown split casing, water, broken screen, also belong to this type of failure.
ATX power supply repair tips
Failure phenomenon, no output measured and found to plug 9 feet No +5 vsb voltage, so you can not judge the work of auxiliary power.
Ic3 l7805 three-terminal regulator measuring inputs and outputs were not voltage, but sometimes there is 20v input voltage, output has 5v voltage, then short the normal voltage output pin 13-14, but then again, the short cable disconnect pass the time nor the output voltage. Auxiliary power collector voltage measurement from the multimeter instructions have been found from vibration, it was suspected that a fault in the transformer secondary winding side。 Replacement capacitor c04, disconnect l7805 input, still no voltage secondary winding, again in accordance with the power failure did not come from the vibration of the end winding from the initial search fails, found that when the switch with a multimeter measuring the collector, the voltage times be back to normal and the enhanced effect by vibration is not to find fault confidence.
Survey found that r02 has become infinite resistance, the role of this resistance is filtered rectified mains voltage into the base switch is open power from the vibration produced a prerequisite, with a 390k resistor to replace r02, troubleshooting .
Ic3 l7805 three-terminal regulator measuring inputs and outputs were not voltage, but sometimes there is 20v input voltage, output has 5v voltage, then short the normal voltage output pin 13-14, but then again, the short cable disconnect pass the time nor the output voltage. Auxiliary power collector voltage measurement from the multimeter instructions have been found from vibration, it was suspected that a fault in the transformer secondary winding side。 Replacement capacitor c04, disconnect l7805 input, still no voltage secondary winding, again in accordance with the power failure did not come from the vibration of the end winding from the initial search fails, found that when the switch with a multimeter measuring the collector, the voltage times be back to normal and the enhanced effect by vibration is not to find fault confidence.
Survey found that r02 has become infinite resistance, the role of this resistance is filtered rectified mains voltage into the base switch is open power from the vibration produced a prerequisite, with a 390k resistor to replace r02, troubleshooting .
Laptop power supply principle Explained
Notebook without power fault conditions in several ways, namely:
First, use the adapter without electricity, but the use of battery power-normal;
Second, use the adapter power-normal, but without using battery power;
Third, use the adapter and the battery can not power up.
The three failures are very common in notebook computers, in order to maintain the three failures, must have the laptop power-up process.
The following simple analysis of the notebook's power-process.
When we press the power switch after the low (or high) of PWRSW # signal triggered PC87591, PC87591 and then issued a PM-PWRBTN # signals trigger the ICH, ICH back to laptop mode PC87591 three signals (Figure in step 6), and then the main power supply notebook computers to trigger the switch, such as the main power supply, CPU power supply, etc., and then follow the steps in the diagram in power. As shown.
First, use the adapter without electricity, but the use of battery power-normal;
Second, use the adapter power-normal, but without using battery power;
Third, use the adapter and the battery can not power up.
The three failures are very common in notebook computers, in order to maintain the three failures, must have the laptop power-up process.
The following simple analysis of the notebook's power-process.
When we press the power switch after the low (or high) of PWRSW # signal triggered PC87591, PC87591 and then issued a PM-PWRBTN # signals trigger the ICH, ICH back to laptop mode PC87591 three signals (Figure in step 6), and then the main power supply notebook computers to trigger the switch, such as the main power supply, CPU power supply, etc., and then follow the steps in the diagram in power. As shown.
MOBILE PHONE SERVICING- BGA CHIP REMOVAL GUIDE
BGA chip removal and welding
1. Guide
With the rapid global development of mobile communication technology, many handset makers compete to launch new compact and powerful mobile phones. In these new phones, the widespread adoption of advanced BGAIC (Balld arrays ball grid array package), which has spread the technology can significantly reduce the volume of mobile phone, enhancements, reduced power consumption, lower production costs. But, like all things beneficial to have disadvantages, BGA package IC is easy to fall caused by Weld, and to the maintenance work led to great difficulties.
BGA packaged chips are used precision optical instrument patch installed, error is 0.01mm, while the actual maintenance work, most of the repairs were not like the SMT equipment, even with all welding hot air and feel installation, little chance of success.
1. Guide
With the rapid global development of mobile communication technology, many handset makers compete to launch new compact and powerful mobile phones. In these new phones, the widespread adoption of advanced BGAIC (Balld arrays ball grid array package), which has spread the technology can significantly reduce the volume of mobile phone, enhancements, reduced power consumption, lower production costs. But, like all things beneficial to have disadvantages, BGA package IC is easy to fall caused by Weld, and to the maintenance work led to great difficulties.
BGA packaged chips are used precision optical instrument patch installed, error is 0.01mm, while the actual maintenance work, most of the repairs were not like the SMT equipment, even with all welding hot air and feel installation, little chance of success.
BASIC ELECTRONICS-FET TESTING
As the FET structure, principle and common transistor different conditions in the amateur use multimeter to determine the method is not the same as before the test what your hands touch touch water pipe, or ground, to let go of the body's charge.
1.G pole (gate) of the judge: multimeter with R × 100 files, each FET were measured resistance between two feet (both positive and negative to the test once), there should be a pair of feet to several hundred ohms resistance (such as are high-value,
1.G pole (gate) of the judge: multimeter with R × 100 files, each FET were measured resistance between two feet (both positive and negative to the test once), there should be a pair of feet to several hundred ohms resistance (such as are high-value,
BASIC ELECTRONIC-BASIC COMPONENTS DETECTION METHODS
Components of the detection is an appliance repair basics, how to accurately and effectively detect the components of the relevant parameters to determine whether components of the normal, not a stereotyped thing, must be based on different components use different methods to determine components of normal or not. Especially for beginners, proficiency testing methods commonly used components and experience is necessary, the following test on the common experience of electronic components and test methods are introduced for the right.
1, resistor detection methods and experience:
1, resistor detection methods and experience:
BASIC ELECTRONICS- USE OF CAPACITORS
1. DC blocking: role is to stop by and let the exchange by DC.
2. Bypass (decoupling): for the exchange of circuit components in parallel to provide certain low- impedance path.
2. Bypass (decoupling): for the exchange of circuit components in parallel to provide certain low- impedance path.
Detection of laser diode
(A) determine the pin order of the multimeter to put R × 1K block, in accordance with the detection of common diode positive and negative resistance method, can be laser diode of the pin in the order determined.
EPSON C4X series printer maintenance
Printer connected to the mains, press the printer's power button when the green indicator light does not shine, the printer does not work, press the key for the red ink light is not bright, it could be the printer's power supply broke down.
The first step to take off the printer's plastic cover. Off-white plastic cover with plastic buckle 7 is connected with a gray base with a screwdriver to push up one by one plastic button, you can take off the plastic cover and then remove the paper into the frame. Connected to electricity, with a multimeter to check the availability of CN2 on the 36 V voltage , shown in Figure 2, if no voltage,
The first step to take off the printer's plastic cover. Off-white plastic cover with plastic buckle 7 is connected with a gray base with a screwdriver to push up one by one plastic button, you can take off the plastic cover and then remove the paper into the frame. Connected to electricity, with a multimeter to check the availability of CN2 on the 36 V voltage , shown in Figure 2, if no voltage,
Add Printer Tip Print Spooler service is not running solution
When this problem occurs, first check-related services have not started
In the Start - Run - CMD - SERVICES. MSC start the service component or on the desktop select "My Computer" right choice "management";
In the Start - Run - CMD - SERVICES. MSC start the service component or on the desktop select "My Computer" right choice "management";
HOW TO REPAIR COMPUTER MOTHERBOARD
MOTHERBOARD NOT BOOT
a. check whether the short circuit CPU voltage
b. MOS tube 5V and 3V voltage is normal
c. check motherboard VID0-VID5 signal
d. 12V Power Management Chip 0 ohm affect, MOS capacitor for the wrong side of the tube will affect the voltage
e. VID_GOOD signal
a. check whether the short circuit CPU voltage
b. MOS tube 5V and 3V voltage is normal
c. check motherboard VID0-VID5 signal
d. 12V Power Management Chip 0 ohm affect, MOS capacitor for the wrong side of the tube will affect the voltage
e. VID_GOOD signal
Reform yourself making mobile phone charger, USB data cable and headset
Reform yourself making mobile phone charger, USB data cable and headphones
Many reasons made cell phones for models, charger, USB data cable and earphones since the original machine can not buy the charger cable and headset, to tell you here yourself, use the other line conversion method: This method is suitable for a certain practical ability of the machine friendly, if a novice, it is recommended not to do the same action! Many domestic phone because the model because, charger, USB data cable and earphones after the original machine can not buy the charger cable and headset, to tell you here yourself, with other line conversion method: this method is suitable for a certain Friends of practical ability of the machine, if a novice, it is recommended not to do the same action!
Tools ready: Tools to prepare:
1, multimeter a 1, a multimeter
2: The full line phone socket pin plug a 2: The full line phone socket pin plug 1
3: The maintenance of a power table (need short-circuit protection) 3: The maintenance of a power table (need short-circuit protection)
Many reasons made cell phones for models, charger, USB data cable and earphones since the original machine can not buy the charger cable and headset, to tell you here yourself, use the other line conversion method: This method is suitable for a certain practical ability of the machine friendly, if a novice, it is recommended not to do the same action! Many domestic phone because the model because, charger, USB data cable and earphones after the original machine can not buy the charger cable and headset, to tell you here yourself, with other line conversion method: this method is suitable for a certain Friends of practical ability of the machine, if a novice, it is recommended not to do the same action!
Tools ready: Tools to prepare:
1, multimeter a 1, a multimeter
2: The full line phone socket pin plug a 2: The full line phone socket pin plug 1
3: The maintenance of a power table (need short-circuit protection) 3: The maintenance of a power table (need short-circuit protection)
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