1648819
Descrição
FlashCards por yousweetdreams, atualizado more than 1 year ago
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Criado por yousweetdreams
aproximadamente 10 anos atrás
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| Questão | Responda |
| What are some dangerous aspects of working on a laser printer? | fuser gets hot, corona has high voltage (HVPS – high voltage power supply), getting ties etc. stuck in printer, toner powder is very small particles and can get inhaled (plastic and metal), ozone filter fills up and sets ozone airborne |
| Difference between a windows test page and a printer test page | Printer test page – originates from printer and tells you that the printer itself physically works – Windows test page tells you that communicating to printer works, drivers, cabling, etc. |
| What can cause printed copies to come out of a laser printer too light? | Prints can be too light if toner is low, fuser is blown, remove tab from toner before installing, set to draft mode or wrong paper type |
| Why shouldn’t an inkjet printer be powered down with a button on a power bar or surge suppressor instead of with its power button? | Turn off inkjet printer from built-in power so it goes through proper parking, sealing and cleaning process |
| What are the 4 colours of toner used in a colour laser printer? | cyan, magenta, yellow, black ink |
| How do colour laser printers mix the toner colours? | Colour laser printer layers colours on transfer belt |
| What should you consider when choosing paper for a printer? | brand, weight, size, colour, cut, absorbency (inkjet) |
| Is low absorbency paper better for inkjet printers? | Yes |
| What are the 2 modes of printing for dot matrix printers? | Dot matrix can print in dot addressable and font mode |
| What is a spittoon? | Spittoon is where inkjets deposit wasted ink from its cleaning process. |
| What is the name of the optional component that allows printing on both sides of a page? | Duplexer allows you to print on both sides of page |
| What can cause a paper jam? | Paper jam can be caused by user error, not cleaning or maintenance the printer, not fanning the paper when filling it up, wrong type of paper, humidity too high or too low, pickup roller needs to be cleaned or replaced |
| How is paper bond weight measured? | Paper bond weight is measured by ream (500 sheets) 17x22-inches |
| How would you clear a paper jam? | Clear paper jam with form-feed button. Failing that remove paper by keeping paper going in its forward direction. |
| If a paper comes out and it is totally black, what has failed? | Paper comes out completely black and covered in toner, primary corona has failed, did not charge paper properly so toner was attracted to entire page |
| What has failed if the paper comes out completely blank? | The print-head (laser) has failed |
| What has failed if the image falls off the page? | Fuser |
| What is the gummy sludge found in ink jet printers? | ink and paper dust |
| How does a CDx compare with a DVDx? | DVD is 9 times faster than CD |
| Why are some markers not good for labelling burnable media? | Some markers can break down the layer of lacquer and damage the reflective coating |
| What is the difference between DVD and Blu-Ray? | Storage size, different lasers, speed, standards |
| What are the 2 region codes for DVDs? | Region protection code standards RPC1 and RPC2 |
| What region code increments the registry? | RPC1 |
| What region code increments the firmware? | RPC2 |
| What are some different power/data cables connected to optical drives? | USB, SCSI, PATA, SATA |
| How would you safely clean an optical disk? | Clean optical disc with lint-free cloth in a straight line from inside to outside |
| What is the maximum parallel ATA cable length? | Max PATA cable length is 18 inches |
| What is the maximum serial ATA cable length? | Max SATA cable length is 1 metre |
| What has replaced CLV and CAV? | ZCLV |
| What is ZCLV? | The disc is divided into zones. In essence it combines the functions of CLV and CAV. |
| How many contacts on a SATA connector? | SATA power connector has 15 contacts |
| What does tight tolerance mean? | A tolerance in a specification that holds the permissible deviation from the specification to a minimum value. Tight tolerance is +/-5%. |
| What is the maximum tight tolerance in a blue wire? | Tight tolerance is +/-5%, blue wire is 12V so maximum voltage is 12.6 for tight tolerance |
| What percentage is loose tolerance? | Loose tolerance is +/-10% difference |
| What is the loose tolerance of a red wire? | Loose tolerance is +/-10% difference, red wire is 5V so loose tolerance would be from 4.5 to 5.5V |
| What is the voluntary certification for efficiency in power supplies called? | 80+ certification |
| What colour is the 3.5mm connector for a microphone? | Pink |
| What colour is the 3.5mm connector for a line-in? | Blue |
| What colour is the 3.5mm connector for a front speakers or headphones? | Green |
| What colour is the 3.5mm connector for a subwoofer? | Orange |
| What is DSP? | Digital Signal Processor. A DSP is to your sound card what your GPU is to your video card? |
| What would cause no sound? | Not connected, blown speakers, wrong driver, poor wiring, volume control |
| What is a Codec? | Codec is a coder/decoder. It tells a program how to read certain file types such as DivX movies |
| If a client is looking to purchase RAM what do you need to know before advising? | Physical size of RAM, type of OS, budget, voltage, speed, module type, memory time has to match |
| What is DDR3 1600 also known as? | PC3 12800 |
| What is DDR3 1333 also known as? | PC3 10600 |
| What is an example of memory type? | DDR3, DDR2 |
| What is an example of module type? | DIMM, SODIMM |
| What is the standard beep code for malfunctioning or dislodged RAM? | One long repeating beep |
| How might you test for suspected bad RAM? | Test bad RAM with memtest86 or memtest86+, Windows Memory Diagnostic, POST card |
| Why should you avoid mixing memory and sockets with gold and tin content on it? | Avoid mixing tin and gold due to threat of corrosion due to oxidization |
| How many pins does DDR2 have for a desktop? | 204 pins |
| How many pins does DDR have for a desktop? | 184 pins |
| What is a memory leak? | Memory leak is when a program closes but does not return RAM back to OS |
| How might an administrator detect memory leak in a system? | By referring to the system’s Task Manager |
| Is the RAM count at boot sufficient to let you know that the RAM is fine? | NO |
| Why would the RAM not count all the way up at boot? | The on-board video is borrowing/stealing some of it. |
| Can you mix different speeds of RAM? | Yes but they’ll run at the speed of the slowest stick |
| What is the ESCD in a system’s bootup? | ESCD is extended system configuration data, saves the last good boot-up (hardware resources, etc., as they worked the previous time) |
| Where is the ESCD stored? | ESCD is stored in the CMOS |
| What does Windows 7 use instead of the BOOT.ini? | Instead of BOOT.INI Windows 7 uses BCD |
| What are the 3 phases of product life in preventative maintenance? | Infant mortality, useful life/constant failure phase, wear-out phase are the phases of life cycle, measures MTBF |
| What are we measuring in the constant failure phase? | MTBF - Mean time between failures. |
| What is replacing MTBF? | MTBF being replaced by AFR (annual failure rate) |
| Example of maintenance tasks that should be performed daily | Daily tasks include server back-ups, virus scans, antivirus updates |
| What is an example of an annual maintenance task? | Physical cleaning of devices |
| What is the expected voltage from a blue wire in a power supply connector? | negative 12 volts |
| What is the expected voltage from a red wire in a power supply connector? | 5 volts |
| What is the expected voltage from a yellow wire in a power supply connector? | 12 volts |
| What is the expected voltage from a white wire in a power supply connector? | negative 5 volts |
| What is the expected voltage from an orange wire in a power supply connector? | 3.3 volts |
| How many pins are on a molex connector? | 4 pins |
| How many pins on a Serial ATA connector? | 15 pins |
| How many pins are on a AUX connector? | 6 pins |
| How many pins are on a PCIe power connector? | 6 or 8 pins |
| How many pins in ATX P4? | 4 to 8 pins |
| How many pins in a PCI express connector? | 6 or 8 pins |
| What makes one power supply better than another? | Number of Watts, power distribution, whether it's modular, number of connectors, whether it's certified, noise, brand, etc. |
| How does CLV work in an optical drive? | The track moves at the same speed and the RPM varies |
| How does CAV work in an optical drive? | RPM remains constant while the data transfer rate (DTR) varies |
| What is the difference between PTP and OTP in DVD technology? | Opposite Track Path (OTP) accesses data from the outside to the centre of the disc while readout on Parallel Track Path (PTP) starts at the centre of the disc |
| What are the 7 steps in the printer process? | Processing, Charging/Conditioning, Writing/Exposing, Developing, Transferring, Fusing and Cleaning |
| What is charged in the 2nd step of the printer process? | primary corona (more recently known as the charge roller) |
| In the 3rd stage of the Printer process, how is the writing done? | Laser writes to the drum |
| The 4th stage of the printer process, developing, what does the developing? | Toner is placed on the photo-sensitive drum on areas discharged by the laser |
| What goes on in the transferring phase in the printer process? | transfers image from the drum to the charged paper by the transfer corona |
| The 2nd to last phase in the printer process is Fusing. What happens in the fusing stage? | heating, pressure and melting done by the fuser assembly |
| What happens during the cleaning phase in the printer process? | Drum is scraped by the wiping blade and preps for the next job |
| What is DxDiag? | DxDiag ("DirectX Diagnostics") is a diagnostics tool used to test DirectX functionality and troubleshoot video- or sound-related hardware problems |
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