8) This describes the essential skills and knowledge and their level, required for this unit. Evidence shall show that knowledge has been acquired of safe working practices and finding and repairing faults in high volume office equipment. All knowledge and skills detailed in this unit should be contextualised to current industry practices and technologies. KS01-EH121A High volume office equipment fault finding and repair Evidence shall show an understanding of high volume office equipment fault finding and repair, applying safe working practices and relevant Standards, Codes and Regulations to an extent indicated by the following aspects: T1. Copier/printer software functions and configuration Copier/printer software functions and configuration options Device driver software installation and configuration Available user function Diagnostic software functions and their use Fault identification and repair T2. Business machine transducers Function of transducers encompassing: Linear position & velocity Angular position measurement Angular velocity measurement Temperature sensors Humidity sensors Current sensors Piezo sensors Temperature sensors types, operating principles and applications - thermocouples, resistance temperature detectors (RTD), thermistors, bimetal temperature sensors and the like. Optoelectronics device types, operating principles and applications - photo resistors, photodiodes, phototransistors, LASCR, photovoltaic devices, optocouplers, lasers and the like. T3. High volume business machine functions and faults Operating features of electric motors, relays and solenoids, clutches and tachometers Function and operation of feed mechanisms, drive-trains and cleaning processors Input accessories, their function and operating principle encompassing: paper trays high capacity bins document feeders duplex unit manual bypass coin boxes card readers raster image processing unit Output accessories, their function and operating principle encompassing: sorters staplers collators folders stackers fault identification and repair machine faults line faults T4. Colour photocopiers operating principles Principles of colour and colour separation encompassing: Effects of light on the eye Colour principles Colour separation Colour mixing processes Colour Wheel Colour separation in colour photocopying encompassing: Three scan process Four scan process Under colour removal Principles of colour photocopying Reflected light paths Block diagrams of photocopiers Principles of operation Scanning processes of colour photocopiers encompassing: CCD Pre amps Auto gain Image Processing Unit Laser unit Exposure processes Printing processes of colour photocopiers encompassing: Laser diode unit Polygon mirrors Laser synchronising and detector encompassing: Cylindrical lens Routine maintenance and servicing encompassing: Optics Paper feeds Developer unit Drum unit Belts and rollers Fusing unit fault identification and repair machine faults line faults T5. Facsimile machine operating principles Sub-system components (i.e. functional blocks) operating parameters encompassing: CCITT standards analogue and digital transmissions transmission process phases of facsimile calls Scanning operations encompassing: single photosensor CCD Operations area image sensors lighting systems optical systems Signal processing encompassing: picture reduction modems Printing processes encompassing: thermal plain paper carbon transfer ink jet Dialing parameters encompassing: pulse (decadic) dialing DTMF manual dial blind dial, line and dial detect redial and listen to dial Coding systems encompassing: data compression Modified Hauffman (MH) systems Modified Read (MR) systems Modified Read (MMR) systems “K” factor Error Correction Modes (ECM) Operational principles encompassing: transmission reception copying Installation, operation, maintenance and servicing procedures encompassing: disassembly and assembly consumable replacement cleaning fault identification and repair machine faults line faults Facsimile services encompassing: fax stream duet |