Epson EMP-7300 Service Manual
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Epson EMP-7300 Service Manual

Xga data projector
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EPSON DATA PROJECTOR
XGA Data Projector
SERVICE MANUAL
EMP-7300
EPSON

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Summary of Contents for Epson EMP-7300

  • Page 1 EPSON DATA PROJECTOR XGA Data Projector SERVICE MANUAL EMP-7300 EPSON...
  • Page 2 INTRODUCTION This Service Manual describes of the hardware information which is necessary for the smooth field service of the XGA DATA PROJECTOR EMP-7300 and the trouble shooting. As the primary technologies will be supplied with the service bulletin, you may update this manual.
  • Page 3 Record of Revisions History Issued Date Alternation REVA 1998,February.13 Preliminary Issued Memo Random Free area to memorize any important technical information here.
  • Page 4 PRECAUTIONS 1. MAINTAIN THE SAFETY OF OPERATORS (1) PROTECTION FROM ELECTRIC SHOCK * Whenever doing any repair work on the product, be sure to turn off the power switch and remove the electric power cable from the electrical outlet. * Whenever inevitably turning the power on to the product opening the case or cover (repair process) be sure to take off any metallic materials such as a watch, cuffs, rings, and tie pins which may touch the metallic part of the product and dangerous of electric shock.
  • Page 5 Authorized person should have the following knowledge and skill for the maintenance of EMP-7300. * Need to be trained by EPSON authorized maintenance training program and to be authorized as a service engineer. * Need to sufficiently understand the operation and the descriptions of this service manual.

  • Page 6: Table Of Contents

    Contents Chapter 1 Product general 1.1 PRODUCT GENERAL ................1-1 1.2 PART NAME....................1-2 1.2.1 Outside View of Main Frame ............. 1-2 1.2.2 Inside View of Main Frame..............1-3 1.2.3 Outside View of Remote Controller ........... 1-7 1.3 CONNECTION.................... 1-8 1.3.1 Connecting to a PC ................
  • Page 7 2.15.1 Interlock Switch ................2-31 2.15.2 Safety Switch ................2-32 2.15.3 Lamp House Thermistor..............2-33 2.15.4 LV Thermistor ................2-34 2.15.5 Front Temperature Thermistor ............2-35 Chapter 3 Disassembly and assembly 3.1 DISASSEMBLY AND ASSEMBLY PROCEDURES ........3-1 3.2 DISASSEMBLING THE MAIN UNIT............3-5 3.2.1 Removing the Lamp Inner Housing ...........

  • Page 8: Product General

    Chapter 1 Product general...

  • Page 9: Product General

    1.1 PRODUCT GENERAL EMP-7300 XGA DATA PROJECTOR designed as the full compatible XGA projector is the maximum luminance device be used the new UHE lamp and the micro lens array with XGA resolution to project enhanced color images from the two personal computers CRT and any one of video equipment such as video tape deck, video camcorders or digital camera.

  • Page 10: Part Name

    1.2 PART NAME 1.2.1 Outside View of Main Frame Temperature indicator Speaker Lamp indicator Remote controller signal receptor Theft-proof Zoom ring Focus ring Handle Foot lever Front foot Operator panel Operator panel Resize button Operation indicator Power button Blank button Source button Tracking button Menu button...

  • Page 11: Inside View Of Main Frame

    Lamp cover Front foot Rear foot Air filter cover Figure1- 2 Bottom side view 1.2.2 Inside View of Main Frame Main board Power supply unit Figure1- 3 Inside view of main frame REV.A...
  • Page 12 Driver board Light guide unit Figure1- 4 side view Exhaust fan LV Thermister Prism duct Driver board Inlet unit Figure1- 5 Under the main board view REV.A...
  • Page 13 CD10AJ board CD10MJ board CD10RJ board Figure1- 6 Inside of rear case unit CD10VJ board Lamp power cable Safety switch Foot adjuster A Lamp Thermister Light guide unit Figure1- 7 Under the driver board view REV.A...
  • Page 14 Filter board Air filter frame Filter cover switch CN board Inlet unit Figure1- 8 Lower case view (Under the light guide block) REV.A...

  • Page 15: Outside View Of Remote Controller

    1.2.3 Outside View of Remote Controller Remote controller Source button Menu button Effect button Effect button Pointer button Right click button Blank button Custom button Resize button Mute button Freeze button Volume button Power button Front view Rear view Left click button Remote infrared Ray Battery cover Figure1- 11 Remote controller...

  • Page 16: Connection

    1.3 CONNECTION 1.3.1 Connecting to a PC Computer 1 Computer cable (Attached Accessory ) Figure1- 13 REV.A...

  • Page 17: Connecting To A Macintosh

    1.3.2 Connecting to a Macintosh Computer 1 Mac. Desk top adapter (Attached accessory) Computer cable (Standard accessory) Figure1- 14 * Attached accessories • ¦ Dip switch settings are required according to the machine type. Refer to the following table for detail. (Default setting is MAC13 mode.) Table1- 1 MAC Adapter Dip Switch settings Switch A switch B...

  • Page 18: Connecting To A Video Source

    1.3.3 Connecting to a Video source Video Audio L Audio R A/V cable (Attached accessory) Figure1- 17 Connection for video source 1.3.4 Connecting to an Audio source Audio out External audio devices Audio cable (Consumable) Figure1- 18 Connection for audio source REV.A 1-10...

  • Page 19: Main Compornent

    1.4 MAIN COMPORNENT CD10MA board Figure1- 20 CD10MA board CD10DR board Figure1- 22 CD10DR board CD10AU board Figure1- 23 CD10AU board REV.A 1-11...
  • Page 20 CD10MJ board Figure1- 26 CD10MJ board CD10AJ board Figure1- 27 CD10AJ board CD10PJ board Figure1- 28 CD10PJ board CD10VJ board Figure1- 29 CD10VJ board REV.A 1-12...
  • Page 21 Power supply unit Figure1- 30 Switch panel Switch panel Figure1- 31 Switch panel (15) Optical engine Figure1- 32 Optical engine REV.A 1-13...
  • Page 22 Receptor board Receptor board Receptor board Figure1- 33 Receptor board REV.A 1-14...

  • Page 23: Specifications

    Interface type:3.5mm Stereo mini-jack Input signal: 500mVrms/47KΩ REMOTE CONTROL Wireless remote controller For controlling EMP-7300 operating mode and controlling host computer from EMP-7300. Signal is detected with internal receptor board. Control range: Within 10 m and 30 degree wide (right/left), 15 degree wide (upper/lower) from receptor of LCP.
  • Page 24 Auto identification (Mouse or RS-232C) MOUSE/COM 1/2 Serial Mouse or RS-232C Interface type: DIN 13pin COMPONENT VIDEO INPUT (For EHQ option interface) Input signal: 0.7Vp-p, 75Ω This interface is as RGB video input sync: negative 0.3Vp-p terminal as well,then distinguish the Interface type: BNC jack signal classification automatically.

  • Page 25: Interface Specification

    1.6 INTERFACE SPECIFICATION Figure1- 35 1.6.1 Computer 1/2 Computer video input D-SUB 15 (HD) Terminal Terminal Red video Green video Synchronous GND Blue video Monitor (ID bit 0) Monitor (ID bit 2) Horizontal synchronization Red video GND Vertical synchronization Green video GND Blue video GND REV.A 1-17...

  • Page 26: Audio 1/2

    1.6.2 Audio 1/2 Stereo mini jack with 2 circuits for detection pin (The detection pin which is not required for audio input, is equipped for audio out terminal.) • H • H • H 1 pin: GND • H • H 2 pin: Computer audio input L •...

  • Page 27: Video

    1.6.5 Video RCA Gold plating (only insertion part), Light angle H=15mm Color: yellow 1 pin: GND 2 pin: Video input 1.6.6 Audio L/R RCA Gold plating(only insertion part), Light angle H=15mm Color: L white R red 3,6 pin: GND 3,6PIN 4 pin: Audio R return 5 pin: Audio input L 7 pin: Audio L return...

  • Page 28: Receptor

    PS/2 Mac. Serial PC serial/ Mousel Mouse Mouse Mouse Mac.serial Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved READY Reserved LEFT LEFT Reserved Reserved Reserved RIGHT LEFT Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved...

  • Page 29: Theory Of Operation

    Chapter 2 Theory of operation...

  • Page 30: Hardware

    2.1 HARDWARE The hardware of EMP-7300 XGA data projector is distinguished in the optical system and the electrical system. The lower level beyond the breaking line in the Figure2-1 show the optical system, and the upper level shows the electrical system.

  • Page 31: Electrical System Connections

    2.1.1 Electrical System Connections Electrical units of EMP-7300 are physically connected mainly to the CD10MA board as shown below. CD10AJ board CD10MJ board Cooling fan CN301 CN300 CN100 CN101 CD10VJ board CN620 CN401 CN902(MOUSE) CN100 CN800 (IN-FAN) CN500 (IF-B) CN100...

  • Page 32: Optical System Connections (Optical Engine)

    2.1.2 Optical System Connections (Optical Engine) The optical systems consists of 5 blocks (Exhaust fan, Light guide unit, Optical head/Prism unit, and Projection lens unit) as shown below. These units and CD10DR board are specified as “Optical engine” and it is one replaceable part. In addition to the five items, CD10FC board is attached at the bottom of light guide unit.
  • Page 33 Caution: Take care not to cause any shock or mechanical stress to the optical engine and also not to disassemble it. Otherwise, the pixel divergence may occur. The alignment adjustment for each other is applied in the factory, and also electrical correction is applied with CD10DR board according to the each optical engine.

  • Page 34: Power Supply Unit

    2.2 POWER SUPPLY UNIT The Power Supply unit includes DC regulator, blower fan and interlock switch with lamp cover. The Power Supply unit generates the voltage for the control circuit (+3.3V,+5V, +12V, +22V) and for the ballast (AC power) from AC input Front temperature thermistor is installed on the side of the power supply inhale fan and is retained with a clamp on the power supply unit.
  • Page 35 * The input signal from the safety switch is prepared for the protection of over heat. It shuts the supply of AC power with overheat condition. Safety switch is mounted on the light guide unit closed to the lamp inner housing. (2) Outline of function * The Interlock switch is built for the safety purpose.
  • Page 36 * The blower fan (connect to the CN622 on the CD10MA board) is built for exhausting the heat generated in the power supply unit. The heat exhausted by the blower fan will be exhausted outside by the exhaust fan which is connected to the connector CN 621 on the CD10MA board.

  • Page 37: Cd10Ma Board

    2.3 CD10MA BOARD The CD10MA board controls the center of the product. It consists of CPU, P-ROM, video memory(SRAM), digital video controller, and circuits for switch panel control, computer in 1/2 interface control, display output control, power management control, and etc... The CD10MA board controls everything except to generate and audio output the display signal.
  • Page 38 (1) CD10MA board circuit block  + +  *,, + 7 #)77#)  )7 1,+  7&7)77             ;&);6     !" "               9"6):6)
  • Page 39 (2) Outline of function 1. Main CPU / SRAM and related circuits are backed up with +3.3V which provided from power supply. (If the AC cable is connected to the AC source, power supply provides the +3.3V for back-up bias even if the power is turned off condition.) 2.

  • Page 40: Cd10Dr Board

    2.4 CD10DR BOARD The CD10DR board has two functions, one is for converting the R/G/B display signal from the CD10MA board into twelve states of analog signals (light valve driver signals) and another is for controlling the display image by referencing electrical correction data.
  • Page 41 (1) Outline of function 1. CD10DR board generates analog display signals for the light valve driver. DAC (digital signals converted into analog signals) , level shifter circuit for bios circuit / timing control, and interface connector connected to the light valve are installed on the board.
  • Page 42 (2) Circuit block diagram of CD10DR board RA1 to 12/RBIAS RD0 to 7 IC200 DIR/CLY/CLX/DX/DY/ENB/NRG GA1 to 12/GBIAS GD0 to 7 IC250 BA1 to 12/BBIAS BD0 to 7 IC300 DAC(12)Channel CLK/SCL/SDA CLR/HSYSC/ VSYNC BLUE GREEN CN100 LEVEL LEVEL LEVEL CD10FC SHIFTER SHIFTER SHIFTER...

  • Page 43: Switch Panel

    2.5 SWITCH PANEL This panel includes the board with 13 switches, and is connected to the connector CN 400 on the CD10MA board. Figure2- 15 Figure2- 16 REV.A 2-14...

  • Page 44: Cd10Au Board

    2.6 CD10AU BOARD CD10AU board includes audio controller (IC105), 3D effector (IC102/104), amplifier (IC107) and connector for internal speaker. 3D effector receive input audio signal (Audio1/2, Video audio) from CD10AJ board, then output internal speaker or Audio out (internal speaker via CD10AJ board) via amplifier circuit.
  • Page 45 The CD10AU board circuit block is shown below. IC102 IC105 PREAMPLIFIER AUDIO CONTROLLER IC104 Audio L/R EFECTOR Line Out L/R SW 1/2 IC107 AMPLIFIER ONTIME IN1/2 (CONNECT TO CD10AJ BOARD CN301) CN102 BV REGULATOR SPEAKER L LINE OUT DETECT CN103 SCL/SDA IC106 SPEAKER R...

  • Page 46: Cd10Mj Board

    2.7 CD10MJ BOARD CD10MJ board includes the board for connecting a remote control receiver and the mouse / serial interfaces of a host computer. The electric current control resistance and the noise filter circuit are only installed on the board. CD10MA board controls switching and other things.
  • Page 47 The CD10MJ board circuit block shown below. Repeater J100 CN101 Mouse/Com1 CN102 Mouse/Com2 Figure2- 22 CD10MJ board circuit block You must use the cable appointed our company for Mouse/COM interface. Exclusive connector cable is not only connect signals but also connect to ground line in part and return to the other signal line inside.

  • Page 48: Cd10Aj Board

    2.8 CD10AJ BOARD CD10AJ board includes Audio 1/2 and Audio out interface connector. The noise filter circuit and switching circuit of Audio 1/2 are installed on the board. The switching circuit connect to the audio signals (S-Video) from CD10VJ circuit and select the audio signals, then output the audio signals amplified CD10AU board.

  • Page 49: Cd10Vj Board

    2.9 CD10VJ BOARD CD10VJ board includes an audio control circuit and an interface connectors for audio signals from a host computer or external devices such as a video device. The interface connectors are shown below. - S-Video - R/R-Y - VD - Video - B/B-Y - Audio L...

  • Page 50: Cd10Pj Board

    2.10 CD10PJ BOARD CD10PJ board includes computer input interface (Computer1/2) and RGB monitor output interface (Computer Out). The noise filter circuit and the output circuit to RGB monitor are installed on the board. Figure2- 29 Figure2- 30 IC207 CN203 Computer 1 Filter circuit R-IN (RGB Input 1)

  • Page 51: Cd10Rc Board (Receptor Board)

    2.11 CD10RC BOARD (RECEPTOR BOARD) This is the board with the infrared signal detection component. There are two receptor boards equipped in this device, one is attached to the speaker bracket on front face (Front), another is on the rear case (Rear). You can control this device through the boards on both sides.
  • Page 52 The CD10RC board connecting block shown below. CD10MA board CN900 CD10RC (Front) IC901 I/FCPU Remote control FI board (Rear) Infrared Ray CN901 Figure2- 34 CD10RC board connecting block REV.A 2-23...

  • Page 53: Speaker Unit

    2.12 SPEAKER UNIT Two speaker units (8Ω-3W) are equipped inside the upper case, faced upward. The audio input signal from a host computer or AV devices connected to this device can be output in stereo through the units. If an external speaker is connected (with the help of an accessory audio cable) to the “Audio Out”...

  • Page 54: Light Guide Unit

    2.13 LIGHT GUIDE UNIT The light valve unit eliminates ultraviolet rays which are harmful to the light valve and uniforms the intensity of the light from the light source lamp before dividing it into 3 light outputs(R/G/B). There are lenses and mirrors for dispersing the light built in the block.
  • Page 55 (1) Lens Array A/B Dispersion of the light from the light source lamp by the Lens Array A/B roughly uniform the brightness. The UV filter coated on the surface of the multi-lens array eliminates ultraviolet rays. The light dispersed through the Lens Array A/B is further dispersed through PBS for the light intensity to be uniformed.

  • Page 56: Lamp Inner Housing

    This unit includes the AC drive light source lamp (UHE-120W), the connector for power supply and fuse board (FU board). The lamp fixed on the base of the lower case is user replaceable item (Type: ELPLP05) you can purchase it at EPSON service center.
  • Page 57 counted the total running hours and has written the running data in IC 413. The lamp will run only 100 hours after the orange and the red lamp indicators start to blink alternately, so you should replace the lamp as soon as possible. (If the lamp indicators blink alternately from beginning, the lamp life is no more than 100 hours.
  • Page 58 2. CD10FU board (Fuse) The lamp inner housing is installed to distinguish a new one ( placed and haven’t started up ) from an old one. This is the board with rated 62mA fuse, a new one has a fuse circuit. The terminal sections placed on the both ends of this board touch the CD10FC board installed on the base of the light guide unit.

  • Page 59: Sensor / Switch

    2.15 SENSOR / SWITCH For user’s safety and safety operation of this projector (for prevention from malfunction), the following devices listed the table *-* are installed in it. Table2- 5 Sensor/switch Name Location/Type Function/Use Interlock switch Push-switch on the power supply Power off, in opening the lamp unit cover.

  • Page 60: Interlock Switch

    2.15.1 Interlock Switch This switch is installed on the side of the power supply unit and interlocks with the tab of the lamp cover. If you turn on the projector with the lamp cover open, the light source lamp (lamp inner housing) runs and generates the high heat. For replacing the lamp inner housing you open the cover.

  • Page 61: Safety Switch

    2.15.2 Safety Switch This is the thermal switch for overheat protection installed on the lamp inner housing. If overheat condition is caused by the contamination of the exhaust fan, normally the lamp thermistor (listed in 2.13.4) temporarily shuts off the supply of AC power to protect it from overheat.

  • Page 62: Lamp House Thermistor

    2.15.3 Lamp House Thermistor This is the temperature detection thermistor installed on the lamp outer housing (near the safety switch). To protect the circumstances around the light source lamp from the overheat of the lamp, this thermistor shuts off the power regulation on the power supply unit, if the temperature rises to certain degrees (lower than safety switch’s level).

  • Page 63: Lv Thermistor

    2.15.4 LV Thermistor This is the temperature detection thermistor installed top the light valve. If the cooling is not sufficient because of the cooling fan failure (installed at the bottom of the light valve) or filter contamination (installed at the top of the light valve), the power is shut off to protect the light valves from overheat.

  • Page 64: Front Temperature Thermistor

    2.15.5 Front Temperature Thermistor This is the temperature detection thermistor installed on the side of the fan (attached to the power supply unit). If the circumstances around the power supply unit become the overheat condition by the abnormal fan or circuit condition, this thermistor shuts off the power.

  • Page 65: Disassembly And Assembly

    Chapter 3 Disassembly and assembly...

  • Page 66: Disassembly And Assembly Procedures

    3.1 DISASSEMBLY AND ASSEMBLY PROCEDURES This section explains how to disassemble the EMP-7300. The reassembly procedure is the exact reverse of the disassembly procedure. (1) Preparatory Procedure 1) Remove any ring, wrist watch, cuff buttons, or other metal accessories that are likely to get in contact with the equipment.
  • Page 67 Caution: Do not disassemble the light guide unit. If you remove the upper guide cover from the unit, the alignment of lenses or mirrors may be unintentionally changed and also dust may stick to the unit. Since EMP-7300 requires very precise adjustment, it can not be adjusted in the field. REV.A...
  • Page 68 Caution for field maintenance Observe the following procedure, when you repair. Otherwise, display quality is not guaranteed, and also EPSON repair service is not available. 1). Do not disassemble the block. (Do not loosen any screws.) 2). If either the optical block or the CD10DR board becomes wrong, replace them in set.
  • Page 69 (4) Precautions Precautions given to the individual assembly and disassembly procedures. Read them carefully before starting the assembly or disassembly procedure. A set of general precautions are given below. As you disassemble the main unit, dust that is sticked to the internal fans and air filters is likely to migrate and contaminate the light valves R, G, and B which are the heart of the display mechanism, thus deteriorating the display quality.

  • Page 70: Disassembling The Main Unit

    3.2 DISASSEMBLING THE MAIN UNIT The flowchart for disassembling the main unit is shown below. You can take same disassembling procedure for EMP-7300. Since you can reassemble the dismantled parts in the reverse order of disassembly, unless specifically specified, this manual contains no reassembly procedure.

  • Page 71: Removing The Lamp Inner Housing

    3.2.1 Removing the Lamp Inner Housing Prerequisite conditions: None. Warning: The lamp unit is very hot immediately after it is in use and may cause burns if you handle it carelessly. Before removing the lamp unit, make sure the temperature of the lamp inner housing unit has cooled down.

  • Page 72: Removing The Air Filter Frame Unit

    3.2.2 Removing the Air Filter Frame Unit Prerequisite conditions: None. Air filter frame Figure3- 4 1. Remove the Air Filter Flame Unit Pull down the tab from the bottom of lower case. REV.A...

  • Page 73: Removing The Upper Case Unit And Handle

    3.2.3 Removing the Upper Case Unit And Handle Prerequisite conditions: None. Handle screw Figure3- 5 screw Figure3- 6 1. Pull up the handle. 2. Remove the two screws under the handle, fixing lower case and upper case. Screw: +M4*14 F/Zn Bind: P/N1021825 (mounting torque: 6.5kg.cm = 5.6lb.inch) 3.
  • Page 74 (Continued from the previous page) Upper case Figure3- 7 Switch panel cable CN1400 Figure3- 8 5. Disconnect the switch panel cable from connector (CN 1400) on the CD10MA board. 6. Remove the upper case. 7. Remove the handle out of the lower case unit. REV.A...

  • Page 75: Removing The Switch Panel

    3.2.4 Removing the Switch Panel Prerequisite condition: 3.2.3 Switch panel spring Tab(B) Tab(A) * Marked with square area are sealed with tape. Figure3- 9 1. Pull down the four tabs from inside, then detach the tape sealing. 2. Remove the switch panel. Switch panel Switch panel spring Figure3- 10...

  • Page 76: Removing The Speaker Units Right / Left

    3.2.5 Removing the Speaker Units Right / Left Prerequisite condition: 3.2.3 screw screw Speaker unit Speaker unit Right Left Figure3- 11 (1) Speaker Unit Right 1). Remove two screws fixing the speaker unit (right) . Screw: +M3*6 F/Ni: P/N1033122 (mounting torque: 4.5kg.cm = 3.9lb.inch) 2).

  • Page 77: Removing The Cd10Au Board

    3.2.6 Removing the CD10AU Board Prerequisite condition: 3.2.3/3.2.9 Speaker bracket screw Figure3- 12 1. Remove three screws fixing speaker bracket on the lower case, then remove speaker bracket. Screw: +M3*6 F/Ni: P/N1033122 (mounting torque: 4.5kg.cm = 3.9lb.inch) Screw: +M3*8 F/ZN Bind : P/N1021824 (mounting torque: 4.5kg.cm = 3.9lb.inch) 2.

  • Page 78: Removing The Receptor Board Assembly (Fi Board / Ri Board)

    3.2.7 Removing the Receptor Board Assembly (FI Board / RI Board) Prerequisite condition: 3.2.3 (1) FI Board (Located on the power supply unit) screw FI board cable connector Figure3-14 1. Disconnect the cable connector on the FI board. 2. Remove the screw fixing the FI board on the power supply unit. Screw: +M3*6 F/Ni: P/N1033122 (mounting torque: 4.5kg.cm = 3.9lb.inch) (2) RI Board (Located on the power supply unit) Receptor board...

  • Page 79: Removing The Cd10Ma Board

    3.2.8 Removing the CD10MA Board Prerequisite condition:3.2.3 Figure3- 16 1. Disconnect the all of cable connectors on the CD10MA board. CN602 CN1401 CN902(MOUSE) CN1800 (IN-FAN) CN550 (IF-B) CN402(AU) CN252 (PC-IN) CN1200 CN901 CN603 (PC-S(N)) (R-RC) CD10MA (EX-FAN) board CN1400(SW) CN651 (LAMP-TH) CN1600 CN652...
  • Page 80 (Continued from the previous page) screw screws screws Figure3- 18 2. Remove six fixing screws on the CD10MA board. Screw: +M3*6 F/Ni: P/N1033122 (mounting torque: 4.5kg.cm = 3.9lb.inch) 3. Grasp the CD10MA board on the left side and disconnect the connector from the CD10DR board.

  • Page 81: Removing The Rear Case Unit Assembly

    3.2.9 Removing the Rear Case Unit Assembly Prerequisite conditions: 3.2.3/3.2.7 screws Figure3- 19 1. Remove four screws fixing the rear case on the bottom of lower case. Screw: +M3*8 F/ZN Bind : P/N1021824 (mounting torque: 4.5kg.cm = 3.9lb.inch) Screw: +M3*6 F/Ni: P/N1033122 (mounting torque: 4.5kg.cm = 3.9lb.inch) 2.

  • Page 82: Removing The Cd10Aj/Cd10Mj/Cd10Pj/Cd10Vj Board

    3.2.10 Removing the CD10AJ/CD10MJ/CD10PJ/CD10VJ Board Prerequisite condition: 3.2.3/3.2.7/3.2.8 screws screws Figure3- 20 Figure3- 21 Remove four screws fixing the panel, then remove the panel. Screw: +M3*6 F/Ni: P/N1033122 (mounting torque: 4.5kg.cm = 3.9lb.inch) 2. Remove two screws fixing the metal flame (upper), then remove the metal flame. 3.
  • Page 83 CD10AJ board CD10MJ board CD10PJ board Figure3- 23 Figure3- 24 Remove two screws fixing CD10AJ board, then remove CD10AJ board. Screw: +M3*6 F/Ni: P/N1033122 (mounting torque: 4.5kg.cm = 3.9lb.inch) Remove four screws fixing CD10MJ board, then remove CD10MJ board. Screw: +M3*6 F/Ni: P/N1033122 (mounting torque: 4.5kg.cm = 3.9lb.inch) Screw: +M3*6 F/ZB: P/N1034713 (mounting torque: 4.5kg.cm = 3.9lb.inch) 6.

  • Page 84: Removing The Lamp Thermistor

    3.2.11. Removing the Lamp Thermistor Prerequisite condition: 3.2.3/3.2.7 Lamp Thermister Figure3- 25 1. Remove the screw fixing the lamp thermistor on the light guide unit. Screw: +M3*12 F/Zn Bind: P/N1021823 (mounting torque: 6.0kg.cm = 5.2lb.inch) REV.A 3-19...

  • Page 85: Removing The Prism Duct / Lv Thermistor

    3.2.12. Removing the Prism Duct / LV Thermistor Prerequisite condition: 3.2.3/3.2.7/3.2.8 screws LV Thermister Clamp screw Prism duct Figure3- 26 1. Remove the clamp screw fixing the LV thermistor cable. Screw: +M2.5*5 F/ZN: P/N1034261 (mounting torque: 4.5kg.cm = 3.9lb.inch) 2. Remove two screws fixing prism duct. Screw: +M3*8 F/ZB: P/N1033691 (mounting torque: 6.0kg.cm = 5.2lb.inch) 3.

  • Page 86: Removing The Safety Switch

    3.2.13. Removing the Safety Switch Prerequisite condition:3.2.3/3.2.7/3.2.8 Fast-on tab Safety switch screws Figure3- 27 1. Disconnect the Fast-on tab terminals of the two cables connected to the safety switch. 2. Remove two fixing screws from the safety switch and detach the safety switch. Screw: +M3*12 F/Zn Bind: P-Tight P/N1021823 (mounting torque: 6.0 kg.cm = 5.2 lb.inch) Caution:...

  • Page 87: Removing The Optical Engine

    3.2.14. Removing the Optical Engine Prerequisite condition: 3.2.3/3.2.7/3.2.8(left) screws(speaker bracket) screws Figure3- 28 1. Remove three screws fixing speaker bracket to the optical head chassis. Screw: +M3*4 F/ZN: P/N1021795 (mounting torque: 4.0kg.cm = 3.5lb.inch) Screw: +M3*6 F/Ni: P/N1033122 (mounting torque: 4.5kg.cm = 3.9lb.inch) 2.

  • Page 88: Removing The Power Supply Unit / Pbs Thermistor

    3.2.15. Removing the Power Supply Unit / PBS Thermistor Prerequisite condition: 3.2.3/3.2.7/3.2.8 (speaker R)/3.2.10 (1)Power Supply Unit Power supply cable screws Power cable Safety switch Figure3- 30 1. Remove two wire cables connecting the safety switch. 2. Remove two screws (with washer) fixing the power supply cable connector, then remove the power supply cable.
  • Page 89 Screws Screws are located on the bottom of power supply unit, thus screws are not shown on the figure• B Figure3- 31 3. Remove three screws fixing base area of the power supply unit. Screw : M3*8 F/ZN Bind: P/N1021824 (mounting torque: 6.5kg.cm = 5.6lb.inch) 4.

  • Page 90: Removing The Foot Adjuster A/B

    3.2.16. Removing the Foot Adjuster A/B Prerequisite condition: 3.2.3 (2) Foot Adjuster B Foot adjuster OP ring screws Lever Figure3- 33 Figure3- 34 1. Remove two screws fixing the Foot Unit on the lower case, then remove the Foot Unit. Screw: +M3*15 F/Zn Bind: P-Tight P/N1039678 (mounting torque: 6.0 kg.cm = 5.2 lb.inch) 2.

  • Page 91: Removing The Cd10Dr Board Assembly

    4. Pull it straight up. CN103 CN700 CN104 (Adjustment) CN800 CD10DR board LV Thermister CN900 CN100(fuse) Figure3- 36 EMP-7300 CD10DR board Caution: Before disconnecting the FPC cable from the connectors, softly pull each connector straight up to unlock it. REV.A 3-26...

  • Page 92: Removing The Fc Board

    3.2.18. Removing the FC Board Prerequisite condition: 3.2.1/3.2.3/3.2.7/3.2.8/3.2.14 FC Board Screw Figure3- 37 1. Disconnect the cable connector CN1 on the FC Board. 2. To detach the FC Board, remove the screw on it. Screw: +M3*12 F/Zn Bind: P-Tight P/N1021823 (mounting torque: 6.0 kg.cm = 5.2 lb.inch) REV.A 3-27...

  • Page 93: Removing The Projection Lens Unit (Plu)

    3.2.19. Removing the Projection Lens Unit (PLU) Caution: This paragraph is limited for references. Do not take the disassemble operations. Prerequisite condition: 3.2.3/3.2.7/3.2.8/3.2.14 Screws Figure3- 38 Figure3- 39 1. Remove four screws fixing the projection lens unit (PLU) and remove the projection lens unit.(Hold the projection lens unit with your hand before removing all screws.) Screw: +M4*10 F/ZN: P/N1034026 (mounting torque: 6.0 kg.cm = 5.2 lb.inch) Caution:...

  • Page 94: Removing The Cooling Fan / Optical Head Unit / Light Guide Unit/Exhaust Fan

    3.2.20. Removing the Cooling Fan / Optical Head Unit / Light Guide Unit/Exhaust fan Caution: This paragraph is limited for references. Do not disassemble expect fans. (You can remove the cooling fan and exhaust fan for cleaning purpose.) Prerequisite condition: 3.2.3/3.2.7/3.2.8/3.2.14 Screws Figure3- 40 (1) Cooling fan...
  • Page 95 Screws Screws Figure3- 41 (2) Optical head unit/Light guide unit 1. Remove four fixing screws in the bottom of the light guide unit. Screw: +M4*6 F/ZN: P/N1004532 (mounting torque: 6.0kg.cm = 5.2lb.inch) Caution: Do not touch the three light bulb screens on the optical head unit with a hand or bend the FPC cable.
  • Page 96 (3) Removing the Exhaust Fan Unit Prerequisite condition: 3.2.3/3.2.7/3.2.8 Screws Figure3- 42 Cable connector Figure3- 43 1. Disconnect the cable connector CN806 on the CD10MA board. 2. Remove two fixing screws on the exhaust fan. Screw: +M4*35 F/ZB: P Tight P/N1033696 (mounting torque: 6.0kg.cm = 5.2lb.inch) 3.

  • Page 97: Troubleshooting

    Chapter 4 Troubleshooting...

  • Page 98: Before Starting Troubleshooting Procedures

    4.1. Before Starting Troubleshooting Procedures 1. Whenever you replace a unit or block for maintenance purposes, double-check the replaced unit or block is defective (to determine whether the problem was due to a poor cable connection). 2. If you find questions you want to check while examining the flowchart, be sure to check those items during the troubleshooting procedure.

  • Page 99: Entry

    4.2. Entry Follow the flowchart shown below when starting troubleshooting EMP-7300 problems and proceed to the pertinent detailed flowchart (given on the next and subsequent pates). Start − Visual check for outside view. Outside view (Check out the any damage on the cover area.) −...
  • Page 100 Outside view Turn off the power then remove power and interface cables. Start − Any transformation or crack are not presented. − Upper case is secured to the lower case with screws.(Refer to 3.2.3) Upper case unit − Dirt condition is not presented on the receptor window (front/rear) on the Upper case unit.
  • Page 101 Internal cable connections Preceding to the cable connection check, turn off the power then disconnect the AC power cable. Ensure the cable connection on the CD10MA board and related circuit. (Refer to the following figure for cable and connector location.) Front temperature Thermister CD10AU board Cooling fan...
  • Page 102 Power ON/OFF Disconnect all interface cable and projection lens cover then connect the power cable. Start Does Exhaust fan work? Does Operation and lamp Go to Display/ Press Power button on the indicator change the condition switch panel. Picture quality. 1 to 3 which are shown next page table.? Replace Exhaust fan...
  • Page 103 < Lamp indication table > Continued from page 4-5 Condi Lamp Operation Meanings tion indicator indicator Orange System initialization. Green-blink Green Warm up operation. Green Green Operating. Orange-blink Orange Cool down operation. Orange Standby. (Cool down complete) Replace power cable. Power off condition.
  • Page 104 Display/Picture quality Start Does screen appear? Does “NO SIGNAL” message Does fine image appear by Go to appear? adjusting focus and zoom ring. next page. Does light source lamp on? Replace CD10MA board. Press Menu button on the switch panel or remote controller.
  • Page 105 Continued from page 4-7 Connect host computer to the Connect the CRT to the Does picture quality is good.? Computer In 1 interface. Monitor interface. Does following devices are Does screen appear on the checked.? CRT.? Computer In 2 Video In Does screen appear.? S-Video Replace CD10MA board.
  • Page 106 Audio output Start Does volume control works? Connect the audio cable to Does audio device is plugged the Audio In 1 or 2 interface. to the Audio interface? Replace CD10AU board. Does volume control works? Does internal speaker R/L Connect the audio cable to output the sound? the above interface.
  • Page 107 Switch panel Start Does Power button works? Does Menu button works? Does Sync +/- button works? Does Source button works? Replace Switch panel. Does Blank button works? Does Enter button works? Does all button works? Does Resize button works? Go to Remote controller. Does Volume button works? Replace CD10MA .board.

  • Page 108: Remote Controller

    Remote controller Start Does power ON/OFF are Does all switches except Does Remote controller Go to available? Effect1 to 5 are works works with 10m distance? Mouse/ correctly? Replace batteries. Exchange remote controller. control. Replace batteries. Does power ON/OFF are Does all switches except available? Effect1 to 5 are works...
  • Page 109 Mouse/Com ELP communication kit II option is necessary. Above option is not installed, ignore the following check out flowchart Start Does pointer button on the Replace following cables. Install the ELP link II Remote controller works - Main cable program to the host computer correctly? - Mouse cable again.
  • Page 110 Others Start Noise problem? Suspect following defects. − Exhaust fan, cooling fan and inhale fan on the power supply unit. − Power supply unit (Vibration noise from pulse transformer) Suspect following defects. Overheat problem? − Thermister (LV/PBS/Lamp) − Exhaust fan, Cooling fan −...

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