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How to Identify and Fix Common Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced technical support :

The Encoder Strip is the semi-clear strip located just above the carriage slider rod. Its purpose is to help the print carriage accurately keep track of its position as it moves along the carriage rod.
The encoder strip is the semi-clear mylar strip located just behind the carriage rod. Its purpose is to help the print cartridge accurately keep track of its position as it moves along the carriage rod.
The best way to locate the encoder strip is to look on the left side of your machine in the opening between the platen and the support arm. There you will see two plastic strips running the width of the machine. One gray and the other clear. The gray strip is the encoder strip.
Clean the device

You should avoid using any harsh chemicals, solvents, or abrasives that could damage the device or leave residues. For optical encoders, you should also clean the lens and the disk with a lint-free cloth and a mild cleaner.

If the encoder strip is dirty, the printer may not be able to properly read the position of the print head. This can cause printing problems and incorrect prints.
US Digital offers a wide variety of standard linear encoder strips. These products are available in many different resolutions and lengths. The material used is Mylar™ polyester film. This material is very rugged, with a wide temperature range of -40C to 100C.
As the cable is pulled, the drum is rotated and the linear motion is translated into rotary motion, at which point the draw wire encoder encodes the information into an electric signal. In simplistic terms, the concept of a draw wire encoder can be likened to a fishing reel.
Optical encoders are important electro-mechanical components used in everything from printers to speedometers.
Dampen the cloth and remove any excess water so that the cloth is damp but not dripping-wet. Open the window. Hold the cloth in an inverted “U” shape around the top of the encoder strip and carefully wipe until no ink residue appears on the cloth.
An encoder converts your video into a digital format to stream on YouTube. Some encoders are software apps on your computer, while others are standalone hardware.
The line refers to the bars etched or printed onto an optical encoder`s disk. Each line on an optical encoder disk would represent a low pulse on the output as they have a one-to-one relationship.
The timing strip is a clear, plastic strip approximately ¼” in height positioned horizontally across the center of the unit, just in front of the carriage drive belt. The timing strip contains many thin black vertical lines that help determine the carriage position during operation.
Hold down the encoder strip (carriage scale) on the left side as shown. Use the soaked cleaning cloth to slowly wipe away any ink from the encoder strip (carriage scale) by moving the cleaning cloth in small motions to the right and across the length of the encoder strip (carriage scale).

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

HP Officejet Pro L7680-problems w/black print head
ANSWER : VLCM Print tech supporters are very helpful to support printing related issues. They are industry certified technicians. they have 12+ years of handful experience. visit page – vlcmprint.com

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I just bought an officejet 3830 2 weeks ago. Now it won't print at all! Says inkjet jam. It's not! I've done all the fixes as per hp's website now what?
ANSWER : Take it back and exchange it under warranty.

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hp officejet pro 1150c
ANSWER : great

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dismantle hp 5610 AIO Officejet?
ANSWER : I want to dismantle my HP Officejet 5610, How do I go about that?

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OfficeJet D155xi all-in-one Installtion CD
ANSWER : I know it is now 8 years later but I had the same issue. I bought a D series which includes 4 printers that all use the same driver/software, the 125,35, 45, 55 in plain and XI flavors. Yes the printers are ancient and out of production. HP removed ALL support for ALL retired printers from their site, drivers and software. It IS available elsewhere. CNET,NO DEVICE, SOFTPEDIA are good choices as is OLD APPS. All .com’s. Another choice is EBAY, either the OEM or a good copy. SILICON GUIDE is a good brand. Even a seller might be willing to run off a copy. I do not use a network device other than a router for 4 computers, 2 active and 2 ports for test lines. Routers are PUG AND PLAY. It is rare that the CD, if you have one for yours needs to be run. Hope this helps.

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officejet 4500 after paper load problem fixed : little part : where does it go
ANSWER : Sorry the pic didn’t make it. Here it is :

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HP Officejet 7310 problem
ANSWER : My HP Officejet7310xi All-in-One has an error message 0x886a789a on a blue screen, with Auto Answer, !, and Power (Print On) flashing. What does this indicate?

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PROBLEM: HP OfficeJet 7110 Series
ANSWER : I Have a HP office jet 7110 and doesn’t print at all, suddenly my printer not working well .when i am print out some documents yellow,black, and dark green color only coming . how can i fix it problem ?

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