BenQ 2720S Service Guide

BenQ 2720S Manual

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  • BenQ 2720S | Service Guide - Page 1
    BENQ PROFESSIONAL FILM SCANNER SCANWIT 2740S SERVICE GUIDE
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    Module 4-8 Chapter 5 Electrical Systems 5-1 5.1 Overview 5-1 5.2 SCSI Interface 5-5 5.3 Scanner Controller (ASIC & µP 5-7 5.4 Analog Circuits 5-8 5.5 CCD Head/Elements 5-9 5.6 Main Flow Chart of Film Scanner 5-10 5.7 Connectors of Scanner 2740S 5-11 Table of Contents API Confidential
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    Chapter 6 Trouble-shooting 6-1 6.1 Error Code Identification from "Status" LED 6-1 6.2 No Function after Power On 6-1 6.3 Cannot Link with Host Questions A-1 A.1 General Questions A-1 A.2 MiraPhoto A-2 A.3 Hardware (Scanner A-6 A.4 Others A-9 ii API Confidential Table of Contents No
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    Appendix B Spare Parts Ordering Information B-1 B.1 Ordering Information B-1 B.2 Spare Parts List B-1 Appendix C Explosive Diagram B-1 C.1 Ordering Information B-1 C.2 Spare Parts List B-1 Table of Contents API Confidential iii No Copy/Reproduction allowed
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    design for accurate color registration All software with this scanner is Year 2000 compliant Implement DICE technology (Digital defect correction technology). Automatic object handling mechanism can preview / scan six frames of image in one click. The first film scanner in the world offers the
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    Chapter 2 Specifications and Section Names This chapter lists the specifications and section names of the film scanner. 2.1 Specifications Machine Type Professional film scanner Scan Method 3 pass , color CCD Scan Mode grayscale 12 bits/pixel (4096 levels of gray) color 48 bits/pixel (over 68
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    (AC) Frequency 50/60Hz Environment Requirement Operational Temperature 10℃ to 40℃ Relative Humidity 10% to 90% 2.2 Sectional Diagram The main parts of the scanner are shown in the Figure 2-1, Figure 2-2, and Figure 2-3, and Figure 2-34, and the names of the parts are listed in Table 2-1, Table
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    Figure 2-1 Main Parts Diagram 1 Base 17 Motor Frame 33 2 Lamp 18 Gear 34 3 Inverter Board 19 Pulley Gear 35 4 Rod 20 Bot + Tape 36 5 Panel Board 21 Foot Rubber 37 6 Pulley Frame 22 Bracket 38 7 P-Spring 1 23 Spring - Top base 39 8 Pulley 24 Spring 40 9 E-Ring 25 Wire
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    Limiter Table 2-1 Main Parts List Figure 2-2 CCD Module Section 1 Module 11 Rack 1 2 Tuning Holes Tape 12 E-Ring Plastic Nylon 2.1*5*0.5T 3 Lens Window Cover 13 Gear B-2 4 SCRW SHM3-0.5*5 SCM3 14 SCRW MACH PAN M2*6L NI 5 Lens 15 Sensor 6 CCD Board 16 Bracket 7 CCD Board
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    Figure 2-3 PCB Frame Section 1 PL Board 6 2 Main Board 7 3 Power Shield 8 4 Power Board 9 5 SCSI ID Switch 10 Power Inlet Screw Screw Screw Insulation Table 2-3 PCB Frame Section Parts List Specifications and Section Names API Confidential 2-5 No Copy/Reproduction allowed
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    1 Base 2 Lamp 12 IR Led Board 13 Screw 14 Preheater Table 2-4 IR Led Board Section Parts List Figure 2-4 IR Led Board Section 2-6 API Confidential Specifications and Section Names No Copy/Reproduction allowed
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    Chapter 3 Theory of Operation This chapter describes the optic process and the scan sequences of the Film Scanner. 3.1 Fundamental of Optic Process There are three steps for the optic process: Auto-Focusing, Imaging and Receiving. 3.1.1 Auto Focusing By moving lens cartridge forward/backward
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    ) into holder and gently insert into holder insertion slot. Two types of holders are supplied with film scanner: filmstrip and slide holders. 3.2.2 Auto-Focus First the holder will do "White balance", which means CCD reads signals from calibration area in holder to be "
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    the intensity of light to voltage, and outputs the voltage to processor. 3.2.6 Output The scanned image of the object is output on the monitor after detail and complex calculations.The detail flow chart is shown in Figure 3-3. Theory of Operation API Confidential 3-3 No Copy/Reproduction allowed
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    START PRESET AUTO-FOCUS N PREVIEW Y N PICK TARGET Y ENVIRONMENT IMAGING RECEIVING PROCESSING N MONITOR Y MORE IMAGE PROCESS Figure 3-3 Scan process flow chart 3-4 API Confidential Theory of Operation No Copy/Reproduction allowed
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    Chapter 4 Mechanism This chapter illustrates the mechanisms of the film scanner and describes the functions of these mechanisms. The scanner's mechanism can be divided into two major departments: ※ Optics Module ※ Transmission Module 4.1 Optics Module The parts to compose optics module are showed as
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    . Reflect plate is a tool that used to increase light intensity. Applying light to go through the object and the non-reflected light will pass through window cover, lens, and finally forms an image on color CCD. If the intensity of light is too low, the color CCD can't work precisely. Please
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    voltage signals while the light shines. Note: The position of color CCD is mounted on a board, its position has been precisely calibrated for every scanner. The CCD board is fixed in lens-box by two screws as shown in Figure 4-1. Any deviation will seriously affect the output voltage of CCD
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    4.2 Transmission Module This module contains the stepping motor, which provides enough power and torque to drive the film/slide holder. Figure 4-4 Transmission Gear Diagram The gear transmission diagram is shown as above and gear numbers are also listed. The purpose of the gear
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    Chapter 5 Electrical Systems 5.1 Overview The overview of electrical systems of film scanner is shown in Figure 5-1. Power Board Host Computer SCSI Interface Cable MainBoard ASIC Scanner Controller Analog Circuits ICE Function CCD module CCD,Inverter,Lamp, Home Sensor Elements (Line motor)
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    Main Board Main Module SCSI Output port Line Motor I/O Module Figure 5-2 Film Scanner System Block Diagram When running in normal mode ,the light source(white signals are compensated with some digital/analog circuits and converted via the A/D converter to get the digitized data. Running in ICE
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    . AC 100~240V Power Board 5V 12V 12V 16V Main Board Figure 5-3 Film Scanner Power Board. Block The 2740S scanner MainBoard is mainly composed of the analog circuits, a AP2106A (ASIC scanner controller) , and a single-chip microprocessor (W78E516). Please refer to figure 5-4 Electrical Systems
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    ( for Motors ) Addr. Bus Data Bus SYSTEM / DATA RAM SCSI I/F Line Motor Driver (6219) Figure 5-4 Film Scanner Power Board. Block The analog circuits is used for CCD signals amplification, gain/DC offset compensation and digitizing the pixel signals. The ASIC AP2106A is used for managing the
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    receives any command since last command. The SCSI interface is built in ASIC AP2106A. It handles the handshaking, software protocols, and interfacing SCSI bus. The communication between 2740S scanner and host computer, for both PC and Mac, is achieved via SCSI interface. 5.2 SCSI Interface The 2740S
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    Cable AcerScan Figure 5-5 SCSI Interface The host computer uses its SCSI card to send commands/data through the SCSI cable to 2740S scanner. The PC-side SCSI Interface Block is shown in figure 5-6. PC-side SCSI I/F Block 5-6 API Confidential Electrical Systems No Copy/Reproduction allowed
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    Controller (ASIC & µP) The AP2106A (ASIC scanner controller) includes the following features: 1. 12-bit ADC data input. 2. Support 1-color or 3-color simultaneous scanning. 3. A programmable color CCD timing generator. 4. CPU interface: This ASIC provides an 8051-compatible microprocessor bus
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    to host PC via SCSI. 7. Digital signal processing: even-odd compensation, digital shading, 1-D LPF, Gamma correction, binary image processing. 8. A horizontal resolution control (by decimation) circuit. 9. An 16-bit Misc. I/O port for connecting motor driver, LEDs, sensors, etc.. 5.4 Analog Signal
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    on this board. As illustrated in figure 5-8 A m plifier C olor C C D + 12V R egulator M ain B oard Figure 5-8 Film Scanner CCD Board 5.5.1 Line Motor Driver The Line Motor is driven by the L6219. It is a bipolar motor driver. Given the clock pulses and the necessary power, it is very easy to
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    multi bit and single bit 6. window mode 7. line art and halftone 8. scalling and resolution 9. matrix operation Send scanned data (* control scanning timing and handshaking timing *) End of scan Next scan Stop (power-off) Figure 5-10 Main Flow Chart of Film Scanner 5-10 API Confidential No Copy
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    This section describes the connectors of film scanner, including all printed circuit boards in Scanner 2740S. Some connector definitions are duplicated Signal ground Signal ground Analog power +15V Analog power +15V Digital power +5V Digital power +5V lamp power +12V Signal ground Motor power +12V
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    J11 5.7.2 MainBoard J1 J13 J4 ASP RAM ASIC CPU 78e516 ASIC MOTOR DRIVER Host J2 Figure 5-11 Main Board of Film Scanner Connector J1 on Scanner 2740S MainBoard J1 is connected to the line motor to drive the stepping motor. Pin # 1 2 3 4 Signal name LM1A LM1B LM2A LM2B Description Line
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    5.7.3 CCD Board There are two connectors on the CCD board in film Scanner. See figure 5-12 Pin 2 Pin 1 CCD Board J1 Screw hole Screw hole CCD Figure 5-12 CCD Board of Film Scanner Electrical Systems API Confidential No Copy/Reproduction allowed 5-13
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    Chapter 6 Trouble-shooting 6.1 Error Code Identification from "Status" LED When the LED flashes: "1" time - FLASH or Firmware Computer: ⊙ Interface - SCSI Cable/Loose Plug ⊙ U2 --- ASIC(AP2106A) ⊙ U6 --- DRAM ⊙ U8 --- IC 74HC04D Trouble-shooting API Confidential 6-1 No Copy/Reproduction allowed
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    ⊙ U2 ---ASIC (AP2106A) 6.9 Flash "7" and "8" times: ⊙ U1 --- IC AFE AD9814 ⊙ Lamp/CCD Board ⊙ IR LED ⊙ U1 --- IC AFE AD9814 6-2 API Confidential No Copy/Reproduction allowed Trouble-shooting
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    Connector J3 ⊙ Inverter Board ⊙ Lamp 6.12 CCD Head 6.12.1 Flash "7" and "8" times ⊙ U1 --- IC AFE AD9814 ⊙ Lamp/CCD Board ⊙ IR LED ⊙ U1 --- IC AFE AD9814 Trouble-shooting API Confidential 6-3 No Copy/Reproduction allowed
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    Chapter 7 Maintenance This chapter gives step by step instructions for maintaining the 2740S film scanner. 7.1 Precaution Make sure that you unplug the film scanner before disassembling. Unless otherwise specified, reassemble the scanner by reversing the disassembly procedure. Do not disassemble
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    before removing the housing. Figure 7-1 Housing Disassembly 7-2 API Confidential Maintenance No Copy/Reproduction allowed
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    7.3 Transmission Section To remove scan motor: Remove two screw We can remove scan motor Figure 7-2 Remove Scan Motor Maintenance API Confidential 7-3 No Copy/Reproduction allowed
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    To remove scan transmissional assembly: 1. Remove 4 screws 2. Place trimmer on the pulley 3. We can remove scan transmissional assembly Figure 7-3 Remove Scan Transmissional Assembly 1/2 7-4 API Confidential Maintenance No Copy/Reproduction allowed
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    Figure 7-4 Remove Scan Transmissional Assembly 2/2 7.4 PCB-frame Section To removing PCB-frame: A. Remove the three screws in Fig.7-2. B. Disconnect the connectors between main board and wires in. C. Remove all the screws, then you can get the main board and power board. Maintenance API
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    Figure 7-5 Remove PCB Frame 7.5 Panel Board Section To remove Panel board A. Remove the two screws in Fig.7-6. B. Disconnect the connectors between panel board and wires in. 7-6 API Confidential Maintenance No Copy/Reproduction allowed
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    Figure 7-6 Remove Panel Board IR Board Section Figure 7-7 Remove IR Board Maintenance API Confidential 7-7 No Copy/Reproduction allowed
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    The resolution is the most important performance of the scanner, and it is under the influence of many factors CCD's position. (4) Stepping Motor Stepping motor movement also afftects resolution. If there are troubles at the transmission module (motor, gears, and rack), the image plane forms by
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    at least 16-bit colors is required. For the professional user, the higher display card that supports more than 24-bit colors could produce superior color images. Q: Does the scanner provide power saving feature? A: Yes. After 15 minutes' pending, the system would shut up the light indicating
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    web: http://www.Benq.com.tw/global/service/scan/drivers.htm http://www.Benq.com/drivers/imaging_drivers.html Q: Is the scanner compatible with TWAIN? A: The scanner is TWAIN compatible. With this specification, the scanner can work with any Windows or Mac applications that support the TWAIN standard
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    to install driver for Windows 98. To replace with driver for 95, follow these steps: 1. Delete Sti2740S.inf & ClrScan.inf two files under \\windows\inf. 2. System\CurrentControlSet\Service\Class\Ima ge". Process key 0000, key 0001, and so on one by one. If there is a value "2740S.Scanner" under
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    reboot computer. Q: Why is the scanned image always darker than the original? A: Please adjust the gamma value from the "Monitor Gamma" menu. Choose "Monitor Gamma..." to open the Monitor Gamma dialog box shown below: A-4 API Confidential Frequently Asked Questions No Copy/Reproduction allowed
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    the dialog box. Press the "OK" button to save your settings and close this dialog box. Q: Could this film scanner run with Win95, Win98 and Win NT? A: Yes, the 32-bit driver of the scanner is fully TWAIN compliant and runs very well under Win95, Win98 or Win NT. Q: What is the proper resolution
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    and config supper IO chip of 486 and early CPU. Q: How to connect the scanner to other SCSI card? A: Just install the SCSI card driver first, then install the scanner driver. When installing the scanner driver, select "custom installation" then in the installation process you'll see a dialog that
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    just select "do not install SCSI card" and complete installing the driver. Q: Why the Scanner cable is only 100cm length to connect it to PC? A: The cable that comes with scanner is in standard length. If you need a longer cable, you have to: 1. Get a suitable length SCSI 25 pin male to male cable.
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    the hardware problem. Please contact the local dealer or supplier for the support. (4) Make sure the driver is installed. After the installation of the driver, there should be a "Color FlatbedScanner_10" for 2740s film scanner under the icon "Scanners" in the System Properties windows ("Control
  • BenQ 2720S | Service Guide - Page 57
    sure that you power on the Scanner before booting Windows. A.4 Others Q: How to registy the scanner and the bundle Software? A: Because the scanner quality is insured by warranty card, so you don't need to register it. But For the bundled software, just follow the instruction of their on-line
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    for an instant solution to use the scanner, Please go to BENQ , Inc. web site to download newest version driver in: Please download the most update from the web: http://www.Benq.com.tw/global/service/scan/drivers.htm http://www.Benq.com/drivers/imaging_drivers.html A-10 API Confidential No Copy
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    spare parts ordering information for BENQ ScanWit 2740S film scanner. B.1 Ordering Information When you place a parts order, be sure to indicate the following data on the list: Part Number Description Quantity Send your order to the Parts Distribution Department of BENQ Customer Service Division.
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    B.2 Spare Parts List Spare Parts for BENQ 2740S film scanner (99.S0661.X1X) REV.: 0 Part Scanner SCSI Cable PCI SCSI Card ASSY STRIP Holder 2mm V1 6620 ASSY SLIDE Holder 2mm V1 6620 ASSY SlIDE Holder 3mm for Eup. OOBE (2720S English) OOBE (2720S Multi-lingo) Manual (English) MiraPhoto V1.0 Manual
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    .001 42.61602.011 60.S0601.001 60.61603.001 V1.0 Description Manual (Multi-l) MiraPhoto V1.0 ASSY CD 6620 V1+PE2(6-lingo),including potoship5.0LE (Small one) For Scan module focus Stepping motor (Biggest one) For moving film holder DC motor (Smallest one) - For scanning Assy Gear +Rack+TL (
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    750-599 http://www.benq-eu.com S.E.Asia Japan Benq Corporation (S.E.Asia) Pte Ltd 29 International Business Park, #01-01, Acer Building, Tower A Singapore ://www.benq.co.jp Malaysia Benq Corporation Technologies Sdn. Bhd. 2686, Jalan Todak, Seberang Jaya, 13700 Prai, Penang, Malaysia Tel:+
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    Appendix C Explosive Diagram Acer Communications & Multimedia
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    C-2 API Confidential Explosive Diagram No Copy/Reproduction allowed Acer Communications & Multimedia
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    Acer Communications & Multimedia
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