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Manual de instrucciones Sharp AL-800

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Summary
  • Sharp AL-800 - page 1

    SER VICE MANU AL CODE: 00ZA L840/ /B1E BASIC MANUAL DIGIT AL COPIER MODE L AL-800/840 SHARP CORPORATION This document has been published to be used for after sales service only. The contents are subject to change without notice. Parts marked with " ! " is important for maintaining the safety of the set. Be sure to replace these parts with ...

  • Sharp AL-800 - page 2

    [1] OPERATING PRINCIPLE 1. B l oc k di ag ra m CCD CPU ASIC MEMORY MEMORY ICU PWB ASIC HOST(PC) KEY AC POWER Control signal, detection signal, drive signal, control data line Image data signal line Image (light) Power line Paper path line OPERATION PWB LAMP (LED) MAIN MOTOR PRINT PWB SCANNER HOME POSITION SENSOR COPY LAMP LIGHT QUANTITY SENSOR MIRR ...

  • Sharp AL-800 - page 3

    Scanner (read) section In this section, the copy lamp (cathode ray tube, Xenon lamp) radiates light onto a document, and the reflected light is detected by the image sensor (CCD element) to convert into electrical signals (analog signals), which are sent to the MCU PWB. MCU (ICU) PWB The image data from the scanner (reading) section are converted i ...

  • Sharp AL-800 - page 4

    2. Out line o f ope rations A. Paper path and imaging Paper is fed, transported, and discharged through the path indicated with the arrow in the figure below. 1) Paper feed (Paper on the paper tray is fed to the transfer section by the paper feed roller.) 2) Image transfer (The toner image on the photoconductor is trans- ferred onto the paper by th ...

  • Sharp AL-800 - page 5

    (2) Printer mode P1) Print data (compressed data) are sent from the host. (Image data (Data 1 – 8) P2) Print data are developed by the ASIC and the line memory and converted into the full dot image data and sent to the data select section. (Image data)(VIDEO) P3) The data are sent through the data select section to the scan- ner (writing) section ...

  • Sharp AL-800 - page 6

    3. Oper at ions of each s ection A. Paper feed, paper transport section (1) Outline The paper feed tray contains about 200 (250) sheets of paper. The paper is passed to the transfer section by the paper feed roller. The paper feed operation is controlled by the paper feed roller clutch and the paper feed roller clutch solenoid. The paper feed clutc ...

  • Sharp AL-800 - page 7

    No. Parts Note Code Signal name Name Type Function/operation Active condition 1 PE SENSOR PEMP IN Paper empty detector Photo transmission sensor Detects paper on the paper tray. LOW (0V) when paper is detected. 2 Paper guide Adjust the paper width. 3 Paper feed tray Sets the print paper. (Capacity: XXX sheets) 4 Paper release lever Put this lever s ...

  • Sharp AL-800 - page 8

    (3) Operation a. Block diagram b. Operation * The main motor is a 4-phase stepping motor of 2-phase excite- ment bipolar system, which serves as the drive source of the paper feed and transport system. * The pickup solenoid operates on 24V and turns ON/OFF paper feed operation. * The following sensors are used. Paper empty sensor (transmission phot ...

  • Sharp AL-800 - page 9

    (Paper release operation) The lock lever arm is always pressed onto the paper release lever by th e sp r in g. When th e pa pe r re lea se leve r is p ul led to war d y ou , th e lock lever arm is brought into contact with the lower frame so that the paper pressure plate is fixed at the paper release position. Under this condition, a clearance is p ...

  • Sharp AL-800 - page 10

    The paper feed roller is of circular form, and double paper feed is prevented by the separate sheet. The paper feed clutch lever is provided to prevent the paper feed roller from rotating reversely. When paper feed is not performed, the paper feed clutch lever is engaged with the paper feed roller boss gear. When removing paper for paper replacemen ...

  • Sharp AL-800 - page 11

    (2) Major parts No. Parts Note Code Signal name Name Type Function/operation Active condition 1 Scanner lamp control PWB Drives the scanner lamp. Maintains the lamp light quantity at a constant level. 2 Scanner drive wire Transmits the scanner motor power to the scanner unit. 3 Scanner motor Drives the scanner unit. 4 MHPS MHPS Scanner home positio ...

  • Sharp AL-800 - page 12

    (3) Operation a. Wiring diagram * Copy lamp A cathode ray tube (Xenon lamp) is used as the light source for reading images. To maintain the lamp light quantity at constant level, the following operations are performed. The copy lamp light quantity sensor is provided in the scanner unit to detect the copy lamp light quantity. The copy lamp drive vol ...

  • Sharp AL-800 - page 13

    * CCD unit Images (light) is converted into an electrical signal (analog signal) by the CCD. The image signal read by the CCD is converted into a digital signal b the A/D convertor in the MCU PWB and outputted to the ASIC, where the image is processed. * Scanner motor The scanner unit is driven by the scanner drive motor. * Scanner home position se ...

  • Sharp AL-800 - page 14

    No. Parts Note Code Signal name Name Type Function/operation Active condition 1 SYNC SYNC IN Laser beam sensor Bin diode Detects the laser beam position. By this signal the left image print start position is controlled. LOW (0V) when laser beam is detected. 2 No. 1 mirror 3 No. 3 mirror Leads the laser beam to the OPC drum. 4 Second cylindrical len ...

  • Sharp AL-800 - page 15

    The scanning mirror is a 6-surface mirror. Six lines are printed for one rotation of the scanning motor. Laser beams reflected by the scan- ning mirror are passed to the curved mirror by the No. 1 reflection mirror. Before reaching the curved mirror, the laser beams enter the laser beam sensor on the start position detection PWB to make horizontal ...

  • Sharp AL-800 - page 16

    (2) Image forming process diagram The operation of this section are composed of the six processes: charging, exposure, development, transfer, separation, and discharg- ing. An OPC drum is used as the photocoductor drum. Toner is of one-component. For charging, the rotation brush is used. For trans- fer, the roller is used and virtually no generatio ...

  • Sharp AL-800 - page 17

    (3) Major parts a. Photoconductor section No. Parts Note Name Type Function/operation 1 OPC drum OPC Forms latent electrostatic images. 2 OPC drum earth electrode Connects the OPC drum aluminum layer and the earth (high voltage PWB). 3 Main charger electrode Connects the main charger output (high voltage PWB) and the main charger brush. 4 Discharge ...

  • Sharp AL-800 - page 18

    b. Development section No. Parts Note Name Type Function/operation 1 Developing roller Attaches toner to the latent electrostatic images on the OPC drum to convert it into a visible image. 2 Developing doctor Controls toner quantity on the developing roller and charges toner. 3 Developing bias electrode Connects the developing roller and the bias v ...

  • Sharp AL-800 - page 19

    c. Transfer/separation section No. Parts Note Name Function/operation 1 Transfer roller Transfers toner images on the OPC drum onto the paper. 2 Transfer roller electrode Connects the transfer roller and the transfer voltage output (high voltage PWB). 3 Pressure spring Applies pressure to the transfer roller, paper, and the OPC drum to improve tran ...

  • Sharp AL-800 - page 20

    (4) System diagram (5) Operation a. Wiring diagram DC-200V DC-310V DC+500V DC-850V AC600V(P-P) DC +3.5KV AC600V(P-P) DC – 850V DC +200V DC – 310V – 310V/+ 200V selection MCU PWB Scanning mirror Laser beam Laser unit No. 1 - 4 mirror Main charger brush Discharge brush Separation electrode Photoconductor drum Transfer charger roller Developing ...

  • Sharp AL-800 - page 21

    b. Major parts functions and operations 1 Developing roller 5 Toner seal 9 Discharge brush 2 Doctor 6 Transfer charger roller 10 Main charger brush 3 Toner stirring plate 7 Separation electrode 11 Toner seal 4 Toner supply roller 8 Phot conductor drum 12 Discharge (Earth) sheet <1> Photoconductor drum unit The photoconductor surface is charge ...

  • Sharp AL-800 - page 22

    c. Actual image forming process Step 1 (Cleaning, charging): Residual toner on the OPC drum is stirred and negative charges are dis- tributed evenly on the OPC drum. (The OPC drum is evenly charged.) The main charger brush is of roller shape and is rotating. The main charger brush stirrs residual toner and paper dust on the OPC drum. At the same ti ...

  • Sharp AL-800 - page 23

    Step 3 (Development): Toner is attached to the latent electrostatic images formed on the OPC drum. Toner enters between the developing roller and the doctor, and a thin layer of toner (a certain fixed amount) is formed on the developing roller by a pressure applied to the doctor. Toner is negatively charged by friction when passing between the deve ...

  • Sharp AL-800 - page 24

    The positive charges are attracted to the OPC drum which is nega- tively charged, and put on the paper transported between the transfer roller and the OPC drum. The paper, therefore, is charged positively. The negative charged toner on the OPC drum is attracted to the paper which is positively charged and visible images of toner are transferred ont ...

  • Sharp AL-800 - page 25

    d. OPC drum surface potential <1> OPC drum surface potential shift in printing <2> OPC drum surface potential and developing bias voltage during developing -310V -850V OPC drum surface potential (-V) Charging/ cleaning Laser beams Dark area potential Toner attraction potential Light area potential Exposure Residual toner collection/ Dev ...

  • Sharp AL-800 - page 26

    E. Fusing/paper exit section (1) Outline Toner attracted to the paper in the transfer section is fused by heat and pressure of the heat roller. The heat roller is of thin aluminum roller which is high heat conductivity, minimizing the warm up time. The heat roller surface temperature is detected by the fusing temperature sensor to maintain the fusi ...

  • Sharp AL-800 - page 27

    (3) Operation a. Wiring diagram b. Operation The heater lamp ON/OFF is controlled by the detection signal (volt- age value) from the thermistor to maintain the heat roller surface temperature at the optimum level. The heat roller surface temperature is controlled to 160/155 ˚C in the print mode and to 80 ˚C in the pre-heat mode. As a protective m ...

  • Sharp AL-800 - page 28

    F. Drive section (1) Outline The main motor drives the paper feed section, the transport section, the image process section, and the fusing section . The main motor drive circuit is built in the high voltage power PWB. (2) Major parts No. Parts Note Code Name Type Function, operation 1 MM Main motor Stepping motor (+24V) Drives the paper feed secti ...

  • Sharp AL-800 - page 29

    G. Electrical section (1) Block diagram a. Major sections operations and functions MCU (PCU) PWB The CPU controls the engine, and the ASIC performs image process. Image data (analog signals) from the scanner (reading) section are converted into digital signals by the A/D convertor and image process (area separation, filter process, gamma correction ...

  • Sharp AL-800 - page 30

    ICU PWB Print data from the host (PC) are developed by the ASIC and the line memory (DRAM) to converted into full dot image data, which are then outputted to the data select section in the MCU PWB. The machine status data from the MCU PWB are outputted tot he host (PC). In addition. the ASIC controls the parallel I/F. Operation PWB Status data from ...

  • Sharp AL-800 - page 31

    q COPYRIGHT  1998 BY SHARP CORPORATION All rights reserved. Printed in Japan. No part of this publication may be reproduced, stored in a retrieval system, or transmitted. In any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of the publisher. SHARP CORPORATION Printing Reprog ...

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Los documentos del dispositivo Sharp AL-800 que obtenemos del fabricante se pueden dividir en varios grupos. Entre ellos están::
- dibujos técnicos Sharp
- manuales de instrucciones AL-800
- hojas de producto Sharp
- folletos informativos
- o etiquetas energéticas Sharp AL-800
Todos son importantes, pero lo más importante desde el punto de vista del usuario de un dispositivo lo encontraremos en el manual de instrucciones Sharp AL-800.

Un conjunto de documentos determinado como manual de instrucciones se divide también en tipos más detallados, tales como: instrucciones de montaje Sharp AL-800, instrucciones de servicio, instrucciones cortas o instrucciones de usuario Sharp AL-800. Dependiendo de la situación debes buscar el documento que necesitas. En nuestra página puedes consultar el manual de instrucciones más popular del producto Sharp AL-800.

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El manual de instrucciones del dispositivo Sharp AL-800, ¿cómo debería ser?
El manual de instrucciones, también determinado como el manual de usuario o simplemente instrucciones, es un documento técnico que tiene como objetivo ayudar a los usuarios a utilizar Sharp AL-800. Las instrucciones normalmente las realiza un escritor técnico pero en un lenguaje comprensible para todos los usuarios de Sharp AL-800.

El manual de instrucciones completo de Sharp debe contener unos elementos básicos. Una parte de ellos es menos importante, como por ejemplo: la portada / la página principal o las páginas de autor. Sin embargo, lo demás debe facilitarnos la información más importante desde el punto de vista del usuario.

1. Introducción y pistas sobre cómo orientarse con el manual Sharp AL-800 - Al principio de cada manual se deben encontrar las indicaciones acerca de la manera de usar un manual de instrucciones. Debe contener información sobre dónde encontrar el índice Sharp AL-800, preguntas frecuentes o problemas más comunes – son los apartados más buscados por los usuarios de cada manual de instrucciones.
2. Índice - listados de todos los consejos acerca de Sharp AL-800 que encontraremos en el documento
3. Consejos de uso de las funciones básicas del dispositivo Sharp AL-800 - que deben facilitarnos los primeros pasos durante el uso de Sharp AL-800
4. Troubleshooting - una secuencia sistematizada de acciones que nos ayudará a diagnosticar los problemas más importantes con Sharp AL-800
5. FAQ - las preguntas frecuentes
6. Datos de contacto Información acerca de cómo encontrar los datos de contacto del fabricante / servicio de Sharp AL-800 en cada país si no somos capaces de solucionar el problema por nuestra cuenta.

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