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ENTERTAINMENT AND LEISURE

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Model CS-31203 CS-31303 CS-35303 CS-35304 Manual

Mitsubishi TV Reciever Service Manual

Back Casing

Main board

Crt Board

Download link 1 from dropbox

Download link 2 from elektrotanya

Read a quick review form wikipedia. The NATO phonetic alphabet, more accurately known as the NATO spelling alphabet and also called the ICAO phonetic or spelling alphabet, the ITU phonetic alphabet, and the international radiotelephony spelling alphabet, is the most widely used spelling alphabet. Though often called "phonetic alphabets", spelling alphabets are not in fact phonetic in the sense that linguists use the term, and they do not have any association with phonetic transcription systems like the International Phonetic Alphabet. Instead, the International Civil Aviation Organization (ICAO) alphabet assigns code words to digits and acrophonically to the letters of the English alphabet (Alfa for A, Bravo for B, etc.) so that critical combinations of letters and numbers can be pronounced and understood by those who transmit and receive voice messages by radio or telephone regardless of their native language, especially when navigation or persons might be endangered due to transmission static.Read more from wikipidea.

RED ALERT 2 FREE DOWNLOAD

COMMAND AND CONQUER RED ALERT 2

Download your copy here..
password: jUT$d
Use this encrypter/decrypter for encryption.

Printronix LIne Matrix Printer User Manual

PRINTRONIX P7000 FAMILY MANUALS

P7000

User's Manuals & Quick Start Guide

User's Manual

Quick Reference Guide (English
Quick Reference Guide (EMEA)
Quick Reference Guide (Simplified Chinese)
Quick Reference Guide (Korean)
Quick Reference Guide (Japanese)
Quick Setup Guide (English,French,Spanish,Italian)
Quick Setup Guide (S Chinese,Japanese,Korean)

Programmer's Reference Manuals

Coax-Twinax
LinePrinter Plus
IGP-VGL Emulation
ANSI
IPDS Twinax Emulation
Character Sets Reference Manual
LG Emulation
PCL LinePrinter Plus LJ
IGP-PGL Emulation (Simplified Chinese)
PXML
IGP-PGL Emulation

Download your copy from source.

For Maintenance manual get a copy here.

Note:File are in in rar,you need winrar or other unzipping programs.You may only open the files once downloaded all part files.Downloading for the host site require registration to download above two files.

PRINTRONIX P9212 Maintenance Manual Parts Service Manual

Printronix P5000 LineMatrix Service Manual

Printronix P5000 Line Matrix Printers Maintenance Manual

Devilbiss 5L Compact Oxygen Concentrator User and Service Manual

Devilbiss 5L Compact Oxygen Concentrator

Service Manual
Users Manual
Service and Maintenance Log

Driver Genius 11 Professional

For downloading driver,here is the driver downloader that will automatically scan the device that matching your products. DRIVER GENIUS PROFESSIONAL install,update,restore and removed invalid drivers.

COMPATIBILITY (OS)

Windows 98/SE/me/2000/XP x64

Windows Server 2003/2008/SERVER 2003/2008 x64

Windows Vista/7 Windows Vista/7 x64

Windows 8/Windows 8 x 64

Driver Genius Professional 11 download here.

Password:r2bcx

Jestine Yong E-books

Jestine Yong e-books

Collect all of these great book of jestine yong and be an expert electronics repairer like jestine.Read and explore of his repair technique by his e-books.You can join and subscribe his blog here and learn a lot from him.These ebooks are scattered in various websites, forums,file storage sites and others and that is available for download for free and many of them are interested because they know how this books are very useful for troubleshooting.

Electronic Servicing and Repair Book Collection

Testing Electronics Components

LCD Monitor Repair

Troubleshooting and Repairing of SWITCH MODE POWER SUPPLIES

How To Find Burnt Resistor value

download your copy here.

ELECTRONICS DISPLAYS

CATHODE RAY TUBE

The Cathode Ray Tube (CRT) was developed for television in the 40s. The CRT shoots a focused electron beam from the back of the tube to the front of the tube. The front of the tube is coated with phosphors that glow when they are struck by the electron beam. An image is created by moving the electron beam back and forth across the back of the screen. The beam moves in a pattern from left to right, top to bottom and then it repeats. Each time the beam makes a pass across the screen, it lights up phosphor dots on the inside of the glass tube, thereby illuminating the active portions of the screen. The intensity of the beam is modulated thus causing the screen phosphors to glow with different intensities or to even not glow at all. The desired images to be displayed are actually retraced between 30 to 70 times each second. This keeps the images continually refreshed in the glowing screen phosphors without a flicker being perceivable to the eye.
The electron beam is generated from a filament and electrically charged cathode in the back neck of the CRT. The electron beam is first passed through a control grid. The control grid modulates the intensity of the electron beam. The higher the intensity the brighter the phosphor dot it strikes will glow. Next the beam passes through an accelerating electrode, this will speed up the electron beam. Then the beam passes through a focusing anode. This will focus or tighten the stream of electrons. All of these elements comprise the electron gun structure housed in the neck of the CRT.

Electromagnetic Deflection:

The structure on the neck of the CRT is the yoke. The yoke contains four electromagnets placed around the neck of the CRT in 90 degree increments. By varying the voltage of these four electromagnets, the electron beam can be deflected or bent to reach any location on the phosphor coated screen. A final stage of acceleration is achieved with the high voltage anode. The familiar suction cup wire that attaches to the side of the CRT is connected to this anode. This anode is often a metalized surface on the inside of the picture tube. Many thousands of volts are applied to the anode to pull the electrons towards the phosphor coated screen. Phosphors can be formulated to emit many colors though white and green are the most popular for monochrome screens.

Electrostatic Deflection:

A simpler form of a CRT is formed by replacing the external electromagnetic yoke with four internal electrostatic deflection plates. These plates are placed in pairs on the horizontal and vertical axes. The electron beam is deflected by the application of a positive voltage on the plates as the beam passes through. The beam will bend towards the most positive plate. Though this type of CRT is not as precise as magnetic deflection it is much less expensive and quite effective for simple calculator and oscilloscope displays. Additional circuitry in the calculator can create numbers, letters, and other symbols by using the control grid to turn the electron beam on and off, while simultaneously applying positive potentials to the deflection plates to bend the beam to the desired locations on the screen. Many early desktop calculators like the Friden EC-130 and the Hewlett Packard 9100A used Electrostatic deflection CRTs.Read more

NIXIE TUBE DISPLAY

In a Nixie Tube display each numeral is a complete, lighted cathode in the shape of the numeral. The cathodes are stacked so that different numerals appear at different depths, unlike a planar display in which all numerals are on the same plane relative to the viewer. The anode is a transparent metal mesh wrapped around the front of the display. The tube is filled with the inert gas neon with a small amount of mercury. When an electric potential of 180 to 200 volts DC is applied between the anode and any cathode, the gas near the cathode breaks down and glows. The digits glow with a orange-red color.
The name Nixie came about accidentally. A [Burroughs] draftsman making drawings of the device labeled it NIX I, for Numeric Indicator eXperimental No. 1. His colleagues began referring to it as "Nixie," and the name stuck (Scientific American, June '73, pp. 66).
Interestingly enough the Nixie design is considered "failsafe". If a filament (cathode) fails, the numeral is not illuminated. Whereas, in a seven-segment display if one segment fails, a number other than the intended number may be displayed. The Casio 121-A and the Sharp QT8-B used Nixie tubes.

INCANDESCENT FILAMENT DISPLAY

An Incandescent Filament display is usually housed in a vacuum tube like the either the Nixie tube or the early Vacuum Fluorescent tubes. This display is typically a seven segment style of display where each display segment is formed with a conductive anode tungsten filament. A small voltage placed across a filament will cause it to heat to incandescence. They emit a yellowish-white light that can be filtered to any desired color. The filament voltage (3-5vdc) can also be varied to change the brightness level of the display. The biggest problem with Incandescent displays is they have a slow response time and they consume a large amount of current. A popular version of this type of display was the RCA Numitron. Some early electronic kits used the Incandescent Filament display.

GAS DISCHARGE or PLASMA DISPLAY

A Planar Gas Discharge or Plasma Display Panels (PDP) display utilizes the same principle the Nixie tube does. It's construction consists of sandwiching a hollow center layer filled with neon and a small amount of mercury between a glass front and a ceramic back. A thick conductive paint forms the Cathodes on the inside of the ceramic back. The Cathodes form the segments of each digit. Each digit is covered by a separate Anode that is deposited on the inside of the glass front. The Anodes are formed from a thin transparent layer of tin oxide. When a sufficient voltage is applied between a cathode segment and it's anode, the gas around the cathode segment breaks down and begins to glow. Like the Nixie tube, the digits glow with a orange-red color. Voltage requirements for these displays are typically 180-200 volts DC).
Burroughs manufactured a common brand of PDPs called Panaplex II. PDPs were used in many early calculators including CompuCorp's Scientist series.

VACUUM FLUORESCENT DISPLAY MODULE

The Vacuum Fluorescent display (VFD) consists of a vacuum tube in which there are three basic types of electrodes, the filament (cathode), the anode (segment), and the grid. The VFD is essentially a small Cathode Ray Tube. The filament (or filaments) is a very fine wire that is heated to a temperature just below incandescence. At that temperature it remains virtually invisible but it emits electrons. A transparent metal mesh grid covers each digit and controls the electrons emitted from the filament toward that digit. Seven phosphor coated anodes, arranged in the seven-segment configuration (that form a square eight), glow when struck by the electrons. When a positive voltage of 12 to 25 volts is applied to the grid and the anodes, the electrons emitted by the cathode filament are accelerated and attracted to the positive anode segments which in-turn glow. If the grid has a negative potential then it will block the electrons from passing regardless of the potential of the anodes under the grid.

VACUUM FLUORESCENT DISPLAY TUBE

VFDs were developed in Japan in 1967. Early versions of VFDs were individual digits housed in vacuum tubes like the Nixie tube and Incandescent Filament displays. VFD Phosphors can be formulated to emit red, yellow, and green as well as the more common blue-green color. Later versions would house all of the digits (and other graphics and indicators) in one large glass assembly. Currently VCRs account for 30% of the VFD market and Audio/Video products account for another 30%. Many early series of calculators like the Commodore 412F, Brother 310, and the MITS 816 used the individual digit VFD tubes. Later manufacturers such as TI and Rockwell used the integrated multidigit VFDs in both handhelds and desktops.

ELECTROLUMINESCENT DISPLAY

Thin-film Electroluminescent Displays (ELDs) use a thin film of phosphor (zinc sulfide (ZnS); ZnSe; ZnSMn or other fluorescent materials) sandwiched between a dielectric layer that is sandwiched between two glass plates. Transparent electrodes (tin-oxide) are deposited on the insides of the glass plates. When a sufficient AC voltage (>100 volts) is applied to any of these electrodes the phosphors will be excited and will emit light. ELD phosphors can be mixed with pigments to emit many colors of light including green, blue-green, lemon-yellow, orange, red as well as white light.

This type of solid state display can endure extreme conditions with exceptional tolerance to shock, vibration, temperature, and humidity, while response times remain less than one millisecond. I have not seen ELDs used in calculators but they are used in some laptops, office machines and in the cockpit of the Spaceshuttle. They are also used to backlight LCD panels.

LED DISPLAYS

A Light Emitting Diode (LED) is an special type of diode that emits light when electricity applied to it's anode and cathode. A typical LED requires about 3 volts DC at 10 milliamps to begin emitting light. LEDs usually produce red light but yellow, green and blue versions are also now available. The LED was first marketed by Texas Instruments around 1962. LED displays (7 or more individual LEDs) were introduced around 1967 but were very expensive. Calculators used LEDs that were arranged to form either a seven-segment display or a dot-matrix display.

LED TYPES

Early seven segment displays formed each segment with many LEDs, later seven-segment displays would use one LED per segment with a light pipe to spread it's light across the segment. Also early LED displays were made small in order to keep power consumption down. A clear plastic bubble lens was fabricated into the package to magnify the display for easier viewing.

NUMERIC REPRESENTATION

The dot-matrix style of display would form characters shaped similarly to that of a dot-matrix printer. A dot matrix of 4x7 or 5x7 is typically used. Notice how the 4x7 matrix makes up for the missing 5th column by slightly slanting the columns. LEDs require much more power than LCDs and are more expensive to manufacture. This is the simple reason for their demise from being used in calculators.

LIQUID CRYSTAL DISPLAY

The Liquid Crystal Display (LCD) was first developed at RCA around 1971. LCDs are optically passive displays (they do not produce light). As a result, LCDs require all most no power to operate. Many LCD calculators can operate from the power of a solar cell, others can operate for years from small button cell batteries. LCDs work from the ability of liquid crystals (LC) to rotate polarized light relative to a pair of crossed polarizers laminated to the outside of the display. There are two main types of LCD displays used for calculators today: Twisted nematic (TN) and supertwisted nematic (STN). TN displays twist polarized light to 90 degrees and have a limited viewing angle. STN displays were developed to twist polarized light between 180 to 260 degrees resulting in better contrast and a wider viewing angle.
A LCD consists of two plates of glass, sealed around the perimeter, with a layer of liquid crystal fluid between them. Transparent, conductive electrodes are deposited on the inner surfaces of the glass plates. The electrodes define the segments, pixels, or special symbols of the display. Next a thin polymer layer is applied on top of the electrodes. The polymer is etched with channels in order to align the twist orientation of the LC's helix shaped molecules. Finally, polarizing films are laminated to the outer surfaces of the glass plates at 90 degree angles. Normally, two polarizing films at 90 degrees should be dark, preventing any transmission of light but due to the ability of LC to rotate polarized light the display appears clear. When AC voltage is passed through the LC, the crystals within this field align so that the polarized light is not twisted. This allows the light to be blocked by the crossed polarizers thus making the activated segment or symbol to appear dark.

LCD THEORY OF OPERATION

Many other types of LCD displays are being developed for the laptop and CRT replacement market including full color versions. These include double and triple twisted nematic (DSTN and TSTN) displays and the Active-matrix Thin-film Twisted Nematic and Metal-Insulated-Metal Twisted Nematic (TFT-TN and MIM-TN) displays. Unfortunately these advanced display are too expensive for most of the calculator market. TN LCDs almost completely dominate todays calculator market due to their extremely low power requirements, thin size, and low cost.

source:vcalc

Epson NX420 Error Codes and Solutions

Error Codes Solutions

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Related Post:
Epson Stylus NX420 Series Manuals

Epson Stylus NX420 Series Manuals

Epson nx420 series
Front Product Image

See Products Specification.

This manual Includes the following:

*Quick Guide
*Wireless Network Setup
*Basic Copying, Printing, and Scanning
*Maintenance
*Solving Problems
Download your copy here.
Driver download.

_____________________________________________________________________
Related Post:
Epson NX420 Error Codes and Solutions

Epson LX-300+ Service Manual

M0del: Epson LX-300+

download now

Need where to find a download link?,just click on the picture above to download of free service manual.

Hammer Voltage Fault(1 and 2)

Hammer voltage fault problem is a fault usually comes from a line matrix printer model tally genicom 63** and 62** series.When this trouble appear in control panel,a high resistance coil fault has likely occurred in one or more of the hammer coils.In a 63** series a dual mosfet transistor coil driver in a controller board usually found a problem.

62** series 63** series

Model: Tally Genicom

T6212

T6215
T6218
T6306
T6312

In my repair of this trouble,in 63** series,i usually found a defective dual N-channel mosfet transistor(FDS3890),cause by a burnt hammer coils and a shorted or defective hammer bank cables.You can also take a look of hammer voltage faults diagnostic aid table below.

Read this solution from the printer place.

This problem is often caused when one or more of the four ribbon shield guide brackets is mispositioned leaving little or no clearance between it and the coil board assembly. When contact is made between the soldered coil terminal points on the underside of the coil board and the ribbon shield guide, a short occurs. This leads to the possibility of destroyed transistors on the hammer driver board which produces the “hammer voltage fault”.

A visual inspection will determine whether there is a clearance problem between the terminals on the coil board and the ribbon shield guide. If about 0.010” or more (definite clearance by eye) cannot be verified, replace the hammer driver board (the transistor is blown anyhow - PN 082578). At the same time, ohm out the coil board to check for coil damage so that it can be replaced also, if it is damaged (PN 083685).

Prior to reassembly, wrap Kapton tape (or a similar durable insulation type tape) around the ribbon shield guide bracket to prevent metal-to-metal contact.

Obviously, this is most easily accomplished with the hammer driver board and the coil board removed. Watch as you mount the hammer driver board and bias it (move it against the screws) so that there is maximum clearance.