PRINTER TROUBLESHOOTING

PRINTER TROUBLESHOOTING

There are mainly three types of printers: DMP, Inkjet and Laser. There is a lot of difference in the printing technology of all three, but all may face similar problems such as paper not fiddle, printout is unclear, printing stops in the middle,  Etc. Printer is an electromechanical device, so if it malfunctions, it should first be found out whether the problem is with the printer mechanism or with the printer's mechanism or with the printer's electronics device, usually the problem is with the printer's mechanism itself, the printer error is divided into three parts. Has been distributed.

 (1) From Print Head Unit

(2) From Printer Mechanism

(3) From Printer Electronics

Self Test: Every printer has the facility of self test, through this facility the printout can be removed from the printer even without a computer, the data received from the sell test is located in the ROM of the printer.  Which can be achieved by pressing the control switches of the printer.  In

DMP Printer to do self testizklr, by putting the paper on FF and keeping the On Line switch pressed, and leaving the switch pressed as soon as the head is moved, there are different methods of self test in Laser and Deskjet. 

The correct printout in Self test indicates that the printer is fine.  When the self test is bad, the error is from the printer and not from the system.  Main Errors coming in

Dot Matrix Printer: Character received in

Printout is not complete Character is getting cut off. 

·        Some pins in the print head unit are broken.  Replace them. 

·        Some coil of the print head has got damaged due to which some pins are not getting fired. 

·        The cable between the circuit and the head of the printer has been cut from somewhere. Or loose.

·        Some Transistor or IC installed in the Amplifier Circuit giving Amplified Signal to Pin are bad, replace them.  Characters will not be clearly visible even if the correct driver software is not available for the printer being used.  Some pins of the print head unit get jammed due to dryness of the ink and do not work, clean the printer head and replace the ribbon. 

Print is correct but very light. 

·        The ink of the Ribbon Cartridge is gone. Refill or replace it.

·        The print head is fixed in the far back. Fix it slightly forward with the Head Adjustment Liver. 

Printer itself is not doing paper feed, there is a need to get paper feed through Roller KNOB. 

·        The paper sensor in the printer has gone bad.

·        The paper sensor got loose, its adjustment has gone bad. 

·    The setting of the dip switch in the printer circuit is misaligned, set it with the help of the printer manual book.

·        The wiring between the circuit and the sensor of the printer has been missed. 

The printer is feeding the paper crookedly and is sleeping between the paper roller.

·        DMP printers have a lever to adjust the roller, by this Friction and 'Tractor' two modes can be selected.  Only computer paper is used in 'Tractor' mode.  Computer paper is attached to the tractor.  With the help of which the paper is fed easily, in this the utility of the roller is reduced and the paper can easily slide between the rollers. 

Single Paper or Xerox Paper is used in Friction Mode, it feeds the paper as it moves.  Here the roller feeds the paper along with its rotation.

·        In the event of the paper being asleep, test whether the roller is on the tractor side. 

·        Servicing the Mechanism of the Printer and Adjust the Lever of the Roller. 

·        This problem can come even if the roller is greased. 

 Is leaving too much space in the top by feeding the printer paper.  When less space is left by the software setting. 

·        This problem is related to the programming of the printer.  This can be set by the controller switch of the printer.  Its information is also given with the 'control witch' or its information is also there in the manual book of the printer. 

Printer is stopping the printing in the middle.  (The printer remains on)

·        The printer is not receiving enough volts. I am Low Voltage. 

·        Replace the interface cable between the printer and the computer, it may be defective. 

·        Check that both the computer and printer ends are properly connected to the printer cable, there may be loose connection. 

·        There may be a fault in the circuit of the printer. 

·        Printer is blocking the head by trapping the Ribbon Replace the Ribbon hinge. 

·        Printer Mechanism needs Servicing Mechanism has jammed. 

Half the page is being printed, the rest of the matter is not being printed and the page is being left half blank.

. The correct size paper has not been selected by the Printer Driver Software.  The paper size of the size paper you are using, select the same size by the software. 

. If two printers are being used by one printer sharer then the sharer device may be defective.  The correct device driver of the printer has not been installed. Check the printout by removing the share. 

The given printout is not being received correctly, wrong size on the paper and printout is being received at the wrong place.  Where as Matter is showing right on the screen.

·        The driver of the printer is wrong, after matching the printer model and brand, install the correct driver software. 

·        Try replacing the interface cable.

·        If the printer sharing device is installed, then test it by removing it.  Sharer can be defective.  Despite having

Paper Feed, the indicator of Paper out is glowing

·        Paper Sensor is bad. 

Alignment of the dip switch in the printer circuit is wrong, set it.  

·        The circuit of the printer is bad. 

Printing continues even after the paper is over, the message of Paper Out is not being received.

·        Check the connection of the Paper Sensor.

·        Set the Dip switch. 

Paper is getting jammed and paper is getting stuck in the middle of printing.  (All LED blinks start burning.)

·        Servicing the printer.  The printer mechanism has jammed. 

·        Printer's Ribbon Cartridge is stuck Replace Cartridge. 

Printer is doing self test correctly but is not printing by computer.

·  Check the interface cable and connection.

·   Install the printer driver in the computer.  Check whether the printer port is configured in the computer's OS. 

·        Check whether Parallel Port is Selected or Disabled by BIOS. 

· It can happen even if the printer circuit is bad. 

ASCII Character Printing.  (Self test is correct.)

· The driver software of the printer is incorrectly installed. 

·  Interface cable is defective.or loose connection. 

·  The printer port on the motherboard is damaged.  Install a separate printer port or use an older IDE card. 

Characters are being printed incorrectly or unknown type of character is being printed.

·  Some wires going from the printer head to the printer circuit are broken or connected incorrectly.

· Printer electronics have become defective. 

On doing Printer on, the head unit starts colliding by moving to one side.  does not come back 

In a correct DMP printer, once the head is moved forward, once the printer is turned on, it comes back. 

·   Printer Electronics has gone bad.  Check the sensor for the motor.

Printout is getting correct but the distance between the two lines is too much and the characters are too small.

. The printout characters may also be small due to font selection by the controller switch of the printer.  Set it to Normal.  

. The reason for more distance between two lines is wrong setting by DIP Switch, select it on the correct setting.  

Printout is very slow.  

DMP are suitable printers for DOS mode, their speed is reduced by Windows.  

. The speed may also be slow due to the matter being printed.  If there is a lot of Linux, Box, Table and Key etc. in the matter, then DMP will print very slowly.

Between printings, sometimes the head moves away from the width of the paper to the edge.

·        Replace Printer Cable Check for Loose connection. 

·        Use Tractor

·        The setting of DIP Switch is wrong. 

The characters of Printout are completely distorted.  

·        The pins of the printer head have become crooked. 

·        Do servicing by opening the head. 

The computer is hanging as soon as you connect Printer.

·        Printer Interface cable is short. 

·        There is a short circuit in Printer Electronics. 

·        DMP Maintanance

·        Do not run the DMP in low volts, run it only in sufficient volts, otherwise there is a high possibility of its circuit getting damaged. 

·        DMPs are suitable for DOS, their speed slows down in Windows and the workload on their heads becomes more.  So try to use DOS based application for DMP. 

·        Do not do Matter Design with more lines in Windows.  Printing will be slow. 

·        While removing print from Windows, keep its resolution low, it will get fast printout. 

·        Most of the errors of DMP are related to its Mechanism and Head, so keep servicing it from time to time or there will be a complaint of Printer Jam. 

·        Adjust the printer head in the back or middle only.  This will reduce the chances of breaking the pin. 

·        Replace the Ribbon Cartridge with a good brand of Ribbon when it dries or deteriorates a bit, otherwise there is a possibility of the pin breaking due to its head getting stuck or obstruction in the movement. 

·        More Fast and Clear Printout is obtained by DMP of 24 Pin but it requires more Precaution.  Its pins are much thinner and weaker than the 9Pin heads which tend to break with the slightest carelessness or use of a bad ribbon.


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LASER, INKJET, DMP PRINTER TROUBLESHOOTING

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