Epson RS-353 Service Manual Download Page 72

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3.2.17

Removing the Cooling Fan Optical Head Unit Light Guide Unit

Prerequisite condition:

The step explained

in Subsections 3.21, 3.24, 3.2.5, 3.2.10,

3.2.11,

3.2.13 and 3.2.15 must have been completed.

Coolig

fan

Figure

(1) Cooling fan

1. Remove two cooling fan mounting screws and remove the cooling fan.

Screw:

P/N1032848 (mounting torque:

Caution:
When installing the cooling fan, place it so that the label side faces down (on the
aluminum die-cast side) and that its cable is oriented as shown in the photo. Clean the
cooling fan until it is free of dust and dirt.

3-22

Summary of Contents for RS-353

Page 1: ...EPSON LCD PROJECTOR Multimedia Projector RS 353 EPSON ...

Page 2: ...quipment and uses radio frequency energy and fully complies with the limits for the specifications in the computer information equipment radio interference regulation rules If not installed and used properly manufacturer s instructions may cause interference to radio and television reception TRADEMARK NEC and PC 98 SERIES are the trademarks of NEC CORPORATION IBM and DOS V are the trademark or the...

Page 3: ...Record of Revisions History Issued Date R E V A Alternation Original Issued RS 353 Memo Random Free area to memorize any important technical information here ...

Page 4: ... PROTECTION FROM ACCIDENTS Any operation should be done while the device placed on a flat and stable place to prevent the device or parts from being dropped Be careful not to place tools and parts on the device or at your feet Whenever doing any repair work on the product be sure to away from a place for foreigner come across in order to prevent the product from being used in incomplete condition ...

Page 5: ... to keep the optical element away from dirt 3 REQUIREMENT FOR THE MAINTENANCE PERSON Authorized person should have the following knowledge and skill for the maintenance of RS 353 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 Need to have the bas...

Page 6: ... 1 Mouse interface specification 1 14 1 6 2 Computer interface board 1 18 1 6 3 Computer audio input l 18 1 6 4 Video interface board l 19 1 6 5 I O terminals layout undefined l 20 Chapter 2 Theory of operation 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 Hardware 2 l 2 1 Electrical system connections 2 2 Optical system connections 2 3 Power supply unit Main board 2 6 Driver board 2 10 Interface board unit...

Page 7: ...moving the foot adjuster unit 9 3 2 15 Removing the optical block 3 20 3 2 16 Removing the projection lens unit PLU 3 2 17 Removing the cooling fan optical head unit light guide 2 3 2 18 Removing the upper light guide from the light guide unit 3 2 19 Removing light valves and B 3 25 3 2 20 Removing the prism unit 3 26 3 2 21 Removing the inlet unit 3 27 3 3 Disassembling and assembling the remote ...

Page 8: ...Appendix Al A3 Al9 Exploded diagram Circuit diagram Chromatcity diagram ...

Page 9: ...Chapter 1 Product general ...

Page 10: ...nt High resolution full color 16770 thousands colors 3 R G and B of TN liquid crystal panels of 307 200 pixel will supply VGA resolution of 640 x 480 dots approx 920 thousand pixels The grid between pixels of the liquid crystal panel is thinner than that of the conventional projectors to provide sharp contrast Standard attachment of remote controller The easy to use controller designed for satisfy...

Page 11: ...ART NAME 1 2 1 OUTSIDE VIEW OF MAIN FRAME Temperature indicator Foot adjuster lever Figure 2 button lamp button button select button select lamp status lamp adjust button adjust button 1 button Figure 3 l 2 ...

Page 12: ...Speaker Input Output Power inlet Figure 4 Input Output interface Foot Figure 5 Lamp interface Figure I 6 l 3 ...

Page 13: ...1 2 2 INSIDE VIEW OF MAIN FRAME Safety switch Power supply u it Figure 7 unit Operator panel Figure 8 l 4 ...

Page 14: ...12 3 OUTSIDE VIEW OF REMOTE CONTROLLER R e m o t e c o n t r o l l e r LED EPSON Figure 9 ...

Page 15: ...12 4 INSIDE VIEW OF REMOTE CONTROLLER Figure 10 Figure 11 l 6 ...

Page 16: ...1 3 CONNECTION IBM DOS V or compatible Desktop type cable Black Audio cable Figure 12 Note type Computer cable Audio cable Attached accessories Figure I 13 l 7 ...

Page 17: ...ttings are required according to the machine type Refer to the following table for detail Default setting is MAC13 mode Switch A Switch B Switch A ON Switch B ON MAC1 3 Mode 8 MAC1 6 Mode 8 Multi Res Figure 15 2 Power Book Audio cable Attached accessories Figure I 16 1 8 ...

Page 18: ...NEC PC 98 or compatible 1 Desktop type Attached accessories Figure Note type Attached accessories ...

Page 19: ...1 4 MAIN COMPORNENT Main board Driver board Figure 19 Interface unit Figure 21 l 1 0 ...

Page 20: ...Power supply Figure 22 Light Guide block Figure 23 Optical Head unit Figure 24 l l 1 ...

Page 21: ...Projection lens unit Figure 25 Lamp inner housing Figure 26 Operation panel Figure I 27 1 12 ...

Page 22: ...1 5 SPECIFICATIONS ...

Page 23: ...ts a keyboard as well as a mouse Mini DIN connector data communication is enabled a port pin assignments Figure 28 Mini DIN connector b port driving procedure Using the IBM PC AT protocol which manipulates the High Low level of Data Clock signals RS 353 communicates with the peripherals 1 14 ...

Page 24: ...uter 2 POWER ON In Macintosh II family this pin is connected to the pin 4 by the use of some key on the ADB keyboard until this signal turns on the power In other models this pin is not connected 3 output 4 GND Ground b ADB port driving procedure ADB device communicates with Mac through the protocol specified by Apple computer Inc which manipulates the level of ADB signals c ADB port current limit...

Page 25: ...l Functions 1 output 2 XA Encoder input from the mouse Counting the data from pulse generator in a mouse 3 XB Same above 4 YA Same above 5 YB Same above 6 LEFT Input from a mouse button Detecting ON OFF of the left button on a 7 NC 8 RIGHT Input from a mouse button Detecting ON OFF of the right button on a mouse 9 GND Ground b For 98NOTE after 98NOTE Light and For the device after Pin Signal Pin c...

Page 26: ...ouse CPU which controls the multi mouse port 2 Multi mouse connector mode Mode ID 0 Serial mouse ov o v ADB 5v PC 98 5v ID 1 o v 5v o v 5v Note not supported in RS 353 3 The mouse is specified by the cable connected to the multi mouse connector 5 The current capacity of the multi mouse port The supplied current capacity is 50 ex The current consumed by an ordinary mouse is approx 6 In sleep mode A...

Page 27: ...uter video input D SUB 15 Blue video GND 1 6 3 Computer audio input 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 Multi mouse jack jack 1 18 ...

Page 28: ...l input 5 pin Input detection terminal 2 CVBS input RCA Gold plating only insertion part Light angle Color yellow 1 pin GND 2 pin Video input 3 Video audio input L R RCA Gold plating only insertion part Light angle Color L white R red GND 4 pin Audio R return 7 pin Audio L return 5 pin Audio input L 8 pin Audio input R ...

Page 29: ...erminals layout undefined The terminals listed above are vertically located in two rows on the rear panel Left row from bottom to top output stereo mini audio input RCA right red Video audio input RCA left white Video CVBS input RCA yellow Video S terminal input mini DIN 4 Right row from bottom to top Computer audio input stereo mini Computer video input D SUB 15 Multi mouse jack l 20 ...

Page 30: ...Chapter 2 Theory of Operation ...

Page 31: ...PRISM LENS UNIT Focus Zoom t c o m p o si te LIGHT VALVE BLOCK Divide the light Into 3 by Lens filter and Mirror Note Cooling fan cools the light valves of R G B LCD panel Note Exhaust fan exhausts mainly the heated air around the light source Projection process outline Figure signal is provided in digital or analog from a computer through the interface board Analog signal should be once changed i...

Page 32: ...2 1 1 ELECTRICAL SYSTEM CONNECTIONS Electrical units are physically connected mainly to the main board as shown below Main board side COOLING MAIN COOLING 2 2 ...

Page 33: ...t guide unit Optical head Projection lens Optical head Figure Figure 4 UNIT NAME FUNCTION REMARKS LAMP NNER OUTER nc ude one METAL HAL I DE LAMP as a I ght source Lamp I NG inner housing and outer housing aie mounted LIGHT GUIDE UNIT Disperse the light from the Light Source and uniform by the LENS ARRAY A B Disperse the light in three R G B factors PROJECT ION LENS 4 and Focus adjustment 2 3 ...

Page 34: ... service Power supply unit Figure 5 1 Function block INTERLOCK SW POWER SW i i AC IN i SAFTY MAIN SWITCH BOARD overheat CN 505 protection CONNECT TO MAIN BOARD AND DRIVER BOARD i i Figure 6 The Interlock switch is built for the safety purpose The Interlock switch will shut the supply of AC power by opening the lamp cover at the bottom of main chassis The input signal from the safety switch is prep...

Page 35: ...tops rotating The filter rectification circuit work to neglect noise on the AC line and generate DC voltage for the regulator The regulator generates the various level of DC voltage as shown in the below table in the switching regulator The regulator detects the voltage output level at the line and feed back to the switching circuit to maintain the output level stable regardless the load variation...

Page 36: ...ls everything except to generate the video signal The driver board is available as a unit for the service parts the following components are also available as an individual replacement Include a firmware to set the initial value and control the function of LCP Fuses For the protection of electric circuit Detail is shown below Fuse S p e c i f i c a t i o n Purpose 451 ROM Interface Fan Speaker Int...

Page 37: ... 1 Main board circuit block Connect to the with cable N505 Fuse 502 POWER ON I Figure 9 2 7 ...

Page 38: ...rcuit Digital R G B input signal is synchronized its indication data and the control timing by three states buffer before output to the driver board Analog R G B signal is amplified by the amplitude circuit and converted its individual signals into data of 7 bits each by A D converter circuit before output to the driver board Analog R G B output signals will transmit the different ways in each cas...

Page 39: ...en the operating time of the light The lamp monitor flashes in green and source valve exceeds 1000 hours orange The light source goes off When the light source valve runs out The lamp monitor lights in red before it s life If the above phenomenon is observed it is necessary to replace the light source valve and reset the timer as follows While holding on the MENU and SYNC switches press and hold t...

Page 40: ...main board is once converted into analog signals by the digital to analog before output to the driver circuit for light valves The timing signals which are for monitor output from the main board is converted into the signals for light valves LCD by the before output to them The sub brightness circuit modifies the output level of the R G B analog signals with controlling the clamping circuit for an...

Page 41: ... 2 Circuit block diagram of Video board 1 detection DAC Display 2 utput clump Connect to the main ROT J r ...

Page 42: ...peaker Video device The unit involves the input output interface connector and the noise filter circuit Figure 12 Interface board Corn connector Computer In Noise filter connector Audio In control 102 RIL Current Noise filter C N Interface board S Video Noise 13 C N Video In Audio L Audio R Audio Out Noise filter Noise filter 102 Figure 14 2 12 ...

Page 43: ...ly unit is placed at the front face of the main unit Controlling of any signals received by the receptor board is transferred to the CPU as interrupt signal Figure 16 2 8 SPEAKER UNIT The speaker is equipped inside the upper case The audio signals from the amplitude circuit on the video board are output to the speaker Also audio signal is available from externally connected speakers In this case t...

Page 44: ...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 The below drawings show the appearance and the internal block of the light valve block Figure 18 B A DM lens unit Figure 19 2 14 ...

Page 45: ...mit only the red light reflect blue and green lights from the light source GDM GDM is a light filter looks blue in the visual light The GDM filter transmit only the blue light from the light source Since the input light to the GDM is only blue and green lights by the CDM as described above green light is reflected by the GDM and provided to the condenser lens G Condenser lens F E The condenser len...

Page 46: ...ompatible with others Consequently their part number differs as summarized in the table given below NAME PART NO I REMARKS LIGHT VALVE G 1021660 1028151 Since the Light Valve G does not have the position adjust plate to define LIGHT VALVE B 1022063 The Light Valve B has a blue label on its FPC cable LIGHT VALVE RI1021674 1027964 Light Valve R has a red one B Light valve Light valve R Figure 20 Sin...

Page 47: ...PRISM UNIT Prism unit compose three lights which are transmitted through light valve Figure 21 Figure 22 2 1 7 ...

Page 48: ...2 11 PROJECTION LENS function ens unit consist from zooming function and focus adjustment Figure 23 ...

Page 49: ...operating time exceeds 4000 hours Lamp indicator on the operation panel blink automatically If you find such state replace the light source valve as soon as possible Safety switch equipped on the lump outer housing beside the lump housing detects overheating condition If the temperature exceed safety zone due to the abnormal lump condition this switch shutdown the power regulation 2 19 ...

Page 50: ...Chapter Disassembly and assembly ...

Page 51: ...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 of the LCP dust that is to the internal fans and air filters is likely to migrate and contaminate the light bulbs G and B which are the heart of the display mechanism thus deteriorating the display quality Accordingly before ...

Page 52: ...covered in this manual 4 Operations that require adjustments and checks When you perform one of the removal or replacement operations listed in the table below you need to perform checks and adjustments that are explained in Chapters 5 Perform necessary adjustments and checks before reinstalling the upper case units Operation Driver board replacement Flash ROM replacement Light bulb replace or cha...

Page 53: ...ns no reassembly procedure Detailed descriptions of the disassembly procedures are given in Subsections 3 2 1 through 3 2 21 Lamp inner housing 3 2 1 Main board 3 2 4 Upper case 3 2 2 Handle 3 2 1 Air filter frame 3 2 3 Exhaust fan Safety switch 3 2 5 3 2 6 Interface unit Projection lens unit 3 2 16 Cooling fan Optical head unit Light guide unit 3 2 17 Upper light Inlet unit guide 3 2 18 3 2 21 Li...

Page 54: ... mounting screws Screw P N1021771 mounting torque 4 5 kg cm 3 9 Ib inch 3 Pull up the handle on the lamp inner housing and remove the lamp unit Warning 1 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 2 When installing the lamp unit take c...

Page 55: ...the opposite side pull it up to remove the handle Make the center portion of the handle holder cover rise forming an arch 2 Remove the two screws located beneath the handle holder cover Screw mounting 3 Remove four case unit fixing screws on both sides Screw mounting torque Caution The handle holder cover has claws on both ends They may be damaged if you insert the spring into a hook s hole and si...

Page 56: ...le and fan guard sides of the upper case unit and lightly pull the handle straight up 5 Disconnect the speaker cable from connector CN 400 on the main board 6 Unlock the connector CN 504 on the main board before disconnecting the operation panel cable from it 7 Remove the upper case 8 Remove the handle out of the lower case unit 3 6 ...

Page 57: ...32 3 Removing the Air Filter Frame Prerequisite conditions None Tab Air Figure 9 1 Push the tab on the air filter frame Then lift it up 3 7 ...

Page 58: ...n board block The cables are summarized in the table below Connector Use and remarks Interface unit Interface unit C N 4 0 0 Speaker unit Power supply unit CN502 Cooling fan CN503 Exhaust fan CN504 Operation1 panel CN505 supply unit I I CN600 board Removed on the subsection 3 2 1 Caution Before disconnecting the FPC cable from the connectors softly pull each connector straight up to unlock it 3 8 ...

Page 59: ...lock one of the screws mounts the FG strap besides Six Screw Sems P N1033122 mounting torque One Screw P Tight P N1021823 mounting torque Grasp the main board block on the left side the portion indicated by the arrow in the photo and disconnect the connector from the interface board assembly Caution Never apply any mechanical stress to the board to avoid malfunction caused by wire breaking or sold...

Page 60: ...2 mounting torque 3 Remove two exhaust fan unit mounting screws to separate the fan from the hold plate Screw Bind P N1022793 mounting torque Caution 1 When installing the exhaust fan take care with the orientation of it Installing the fan in the reverse orientation may result in a device failure or extended cooling time because of an overheat condition Make sure that the label on the fan faces ou...

Page 61: ...o the safety switch 2 Remove two mounting screws from the safety switch and detach the safety switch Screw P Tight mounting torque 6 0 kg cm 5 2 Caution When removing the Fast on terminals do not apply excessive force to the terminals on the safety switch in the horizontal or vertical direction The polarity of the cables blue white is insignificant connect them to any terminals on the safety switc...

Page 62: ... Operation Panel Prerequisite condition The step explained in Subsections 3 2 1 must have been completed Tab Tab Figure 16 1 Pull down the tabs from inside Then remove the operation panel on the upper case Figure 17 3 12 ...

Page 63: ...screws and remove the speaker units with bracket Screw F Zn P Tight PIN1021824 mounting torque Caution 1 The speaker unit incorporates a permanent magnet Keep it away from electromagnetic media such as floppy disks and magnetic cards 2 When mounting a speaker align the three screw holes of the speaker with those of the frame then screw them with same tightening torque 3 13 ...

Page 64: ...ove the screw mounting the receptor to the power supply unit Screw P N1033122 mounting torque 2 Disconnect the cable from the connector CN600 on the driver board block and remove the receptor board assembly Caution When installing the receptor board assembly align the hole on the board with the boss on the power supply unit before tightening the screw 3 14 ...

Page 65: ...been completed Stud screw GND Figure 20 1 Remove two GND plate mounting screws and remove the GND plate 2 Unlock the connector lock of to disconnect the light bulb FPC cable 3 Remove four driver board assembly mounting hex stud screws 4 Hold both edges of the driver board assembly and pull it straight up 3 15 ...

Page 66: ...wer supply unit Screw P N1021824 mounting torque 4 Remove the grand cable mounting screw Screw P N1033025 mounting torque 5 Pull the power supply unit straight up with the inlet cover Caution When removing the power supply unit take care not to bend or damage the bosses on the lower case unit When installing the power supply unit align the power supply unit positioning holes with these bosses The ...

Page 67: ...erface unit assembly mounting screws Screw P Tight P N1021824 mounting torque 3 Remove the fan hold plate mounting screw Screw P N1033122 mounting torque 4 Slide the interface unit slightly inward not to contact the frame before removing it Caution When installing the interface board the screw holes in the board with screws assembly align the two positioning holes beside the bosses on the bracket ...

Page 68: ...e lamp air guide screw P Tight P N1021824 mounting torque 2 Remove the lamp outer housing unit mounting screws and remove the lamp outer housing unit screw P N1021824 mounting torque Caution The inside of the lamp outer housing is susceptible to dust if necessary clean there before installing it The lamp outer housing is heated for a while after the power is turned off Remove the housing after it ...

Page 69: ... lever side of the compression spring to remove it 4 Remove the foot lever pin then remove the foot lever Caution When installing or removing the foot adjuster unit do not fold or peel the foot seal on the lower case When installing the foot adjuster unit set the foot lever then replace the counter spring and finally insert the foot axis When the installing has been completed press the foot lever ...

Page 70: ...xplained in Subsections 3 2 1 3 2 4 3 25 3 2 10 3 2 11 3 212 and 3 2 13 must have been completed Screw Screw Figure 27 1 Removing four optical block mounting screws Screw Bind P Tight P N1021825 mounting torque 2 Pull the straight up from the lower case Figure 28 3 20 ...

Page 71: ...crew P N 1004532 C a u t i o n mounting torque 6 0 kg cm 5 2 Ib inch 1 When installing the projection lens unit align the two bosses on the frame with the positioning holes before tightening the screws Tighten the screws with a torque of 6 0 kg Do not make the screws too tight too large a mounting torque may damage the projection lens unit 2 Take care not to touch the lens surface or prism of the ...

Page 72: ...ve been completed Coolig fan Figure 30 1 Cooling fan 1 Remove two cooling fan mounting screws and remove the cooling fan Screw P N1032848 mounting torque Caution When installing the cooling fan place it so that the label side faces down on the aluminum die cast side and that its cable is oriented as shown in the photo Clean the cooling fan until it is free of dust and dirt 3 22 ...

Page 73: ...unit Screw PIN1022793 mounting torque Caution Do not touch the three light bulb screens on the light guide unit with a hand or bend the FPC cable When installing the light guide unit on the optical head unit align the two bosses beside the screws of the light guide unit to the holes of the optical head unit before tightening the screws The optical head mounting screw M4 X8 on the bottom face is di...

Page 74: ...ot disengage from the lower light guide repeat this step several times in the order of 4 indicated in the photo Note that attempting to disengage them with excessive force or distorting them would damage the internal lenses or mirrors 4 While keeping the upper light guide approximately 1 cm afloat make sure that the mirrors and lenses are set on the lower light guide If one of them is mounted on t...

Page 75: ...screws and remove the light valve Screw sems PIN1021821 mounting torque over over Caution 1 Since the light valves are highly sensitive to static electricity never place them on a vinyl nylon or other sheet that is easily charged 2 Before installing the light valves clean their screen and make sure that they are free of dirt 3 The light valve can be identified with the label on a FPC cable Light v...

Page 76: ... two for each of R G B bulbs mounting the light bulbs to the head unit to detach the FA adjust fixing plate with the bulbs Screw PIN1021821 mounting torque 3 Remove three prism mounting screws and remove the prism Screw PIN1025172 mounting torque Caution 1 When installing clean and make sure that the FA adjust fixing plate and prism are free of dirt 2 When installing the prism align the bosses on ...

Page 77: ...3 21 3 24 3 2 11 3 2 12 3 2 13 and 3 2 15 must have been completed Figure 36 Remove the inlet unit mounting screw Screw P Tight P N1021824 mounting torque 2 Remove the cable wire from four cramps Pull up the board section of the inlet unit to remove the unit 3 25 3 2 10 Figure 37 3 27 ...

Page 78: ...switches are to be cleaned Figure 38 Figure 39 Screw Figure 40 1 Remove the battery cover from the rear panel of the remote control unit and remove two battery cells 2 Remove one screw behind the battery holder 3 While pushing up the rear cover push the four hooks of the battery block inward to unlock the cover 4 Distort the rear cover right and left to unlock the six hooks before removing the cov...

Page 79: ...Chapter Troubleshooting ...

Page 80: ...and Accessories Required for Troubleshooting The tools and accessories required for LCP troubleshooting including fault isolation are listed below They need to be prepared by the user Name Projector screen Rule 3 m Small size mirror Host computer Color display Video equipment Quantity Use Remarks 1 To project images 1 To measure the projection distance 1 To check the optical digital mirror or roun...

Page 81: ...Mode No Host computer video To Video Display display problem Mode To Audio Mode No Projection Image quality Yes problem To Image Quality r problem Yes I To Remote Control C o n t r o l 4 2 Check the operating environment temperature condensation end Input AC Try to Input host computer end video equipment and their cables The is attributable to static Check to ensure that the power cords to the LCP...

Page 82: ...n board Check connection on the main board Check connection on the main board NO Is indicator normal YES NO Replace board Do POWER LED light NO Do POWER LED light NO Replace the ROM on board r N O 1 Replace board Replace main board Replace supply Figure 2 4 3 ...

Page 83: ...ety switch on the lamp outer housing light Figure 3 the main board Reconnect the end board NO on the driver Dose screen appear Replace driver NO Replace board YES Dose menu key runs normal YES screen will appear I E Replace driver YE NO board 4 4 ...

Page 84: ...the I s Y E S O K trough OK NO Replace main board driver work with video menu Figure 4 4 5 ...

Page 85: ... speaker output OK YES Is Audio out YES Dose YES adjustment Go to OK work with remote Picture Quality output OK YES NO Replace on the main Is speaker output OK YES NO Replace main board Is speaker output OK YES Replace Interface unit Is Audio out OK Figure 5 4 6 ...

Page 86: ...ce driver board No ghost noises NO Replace main No ghost NO YES Replace light No ghost noises Adjust flicker No ghost Is white YES noises No flicker light I Adjust white balance NO Replace light Go to function 1 Figure 6 4 7 ...

Page 87: ...START Picture quality OK wireless RC work Figure 7 Functionary J ...

Page 88: ...Chapter Adjustments ...

Page 89: ...ce Flash ROM Replace driver board When you replaced or disassmbled the light bulb G it is necessary to adjust light bulb B and light bulb R even if you don t care light bulb B and R 5 1 1 Prep Perform steps 1 to 11 given below to determine the adjustment conditions 1 Remove the upper case unit see Subsection 3 2 2 2 Remove the shield plate secured by two screws together with the driver board block...

Page 90: ...just in focus IO Attach a piece of pressure sensitive adhesive double coated tape on the back panel of the small size mirror and stick it to the screen at the position at which the production line from the projection lens unit intercept 10 cm from the bottom edge of the projection screen Place a tracing paper in front of the projection lens unit and adjust the position of the mirror so that the li...

Page 91: ...LCP screen occasionally check the optical axis for misalignment using the reflected ray from the mirror Adjustment tool is prepared by EPSON witch is useful for focus and alignment adjustment If you don t have this tool you can take the focus and alignment adjustment with driver board When the driver board is mounted we can t secure the enough space for adjustment and produce hard operations When ...

Page 92: ...d and pull out the board four speaker uint mpunting screws and remove both speaker unit two board retaining plate fixing screws and remove the board retaining plate the adjustment tool Perform three connectors connection on the power switch then ensure the white raster appear on the screen If the white raster does t appear on the screen please change the switch setting on the adjustment tool Figur...

Page 93: ...quid crystal picture G fixing screws A and into the adjustment slot on the lower adjusting plate and forth to attain complete focus on the top of screen then A crewdriver into the adjustment slot and move it back and forth focus on the bottom of screen then temporarily lock screw C sure that the top portion of the projection screen is in focus justing plate fixing screws and G into the adjustment ...

Page 94: ...ing plate and move it back and forth to attain complete focus on the top of screen then temporarily lock screws A 3 Insert a flat top screwdriver into the adjustment slot and move it back and forth to attain complete focus on the bottom of screen then temporarily lock screw At this point make sure that the top portion of the projection screen is also in focus 4 Loosen lower adjusting plate fixing ...

Page 95: ...d move it back and forth to attain complete focus on the top of screen then temporarily lock screws 3 Insert a flat top screwdriver into the adjustment slot and move it back and forth to attain complete focus on the bottom of screen then temporarily lock screw At this point make sure that the top portion of the projection screen is also in focus 4 Loosen lower adjusting plate fixing screws and G 5...

Page 96: ...reen and blue screens Superimpose the mesh pattern that is projected onto the screen from light bulb B on the screen for light bulb G by following the steps 1 through 3 below I Tighten screws 1 and 2 little by little in similar increments and make the screens parallel in such positions that there are two lines of light bulb B screen below the bottom of light bulb G screen 2 Adjust screw 3 so that ...

Page 97: ...f light bulb R screen below the bottom of light bulb G screen 2 Adjust screw 3 so that the sides of screen are aligned with those of light bulb G screen 3 Tighten screws 1 and 2 little by little in similar increments and align the screen on light bulb G screen Figure 5 15 Since a lager projection actually is formed on screen B than on screen G because of aberrations screen B overlaps screen G by f...

Page 98: ...ter A menu screen appears Run the menu options and program the resultant settings onto the flash ROM on the main board Monitor cable Computer cable RS 232C cable Host Monitor Computer Figure 5 16 5 2 1 Conditions that require the adjustments provided by the image adjustment Program The table below lists the conditions that require the adjustments to be conducted under control of the image adjustme...

Page 99: ... from the projection lens unit 2 Turn on the LCP and host computer 3 Adjust the focus ring on the projection lens unit so that the projected image on the screen is in focus Use the zoom ring to set the size of the projection screen to 60 inches 4 Make sure that the prompt appears on the host computer monitor screen If Windows is running exit Windows and display the prompt Detail orocedure are desc...

Page 100: ...t the 3 5 inch 4 Make sure the screen display of object then select it 5 Make sure the screen display of object then select it 6 Make sure the screen display of then select it 2 MS DOS or Windows3 1 system 1 Make sure that the prompt appears on the monitor screen If Windows 3 1 is running select the MS DOS prompt from the program manager or exit Windows and display the prompt the appear on the scr...

Page 101: ... u s i n g L e f t A r r o w K e y d o w n R i g h t A r r o w K e y u p S e l e c t E n t e r K e y s e t Figure 5 I 9 Arrow key generate the plus or minus value by one for previous setting value 3 Use the right and left arrow cursor control keys to obtain the display state in which the flickers are minimum As you press the left arrow cursor control key an adjustment value from to appears at the ...

Page 102: ...of each 4 5 6 7 grayscale appears thinnest least overlap borderlines As you press the left arrow cursor control key an adjustment value from 0 to 3 appears at the lower left corner of the monitor Press the return key and make sure that 16 greenscale patterns appear on the projection screen In the same way as in step adjust so that the border line of each grayscale appears thinnest Press the return...

Page 103: ...appear on the projection screen In the same way as in adjust so that the second and third border lines from the right most edge are clearly identifiable Press the RETURN key and make sure that blue patterns appear on the projection screen In the same way as in adjust so that the second and third border lines from the right most edge are clearly identifiable Press the RETURN key and make sure that ...

Page 104: ...mma revise This adjusutment correct a color difference between liquid crystal display and human Type 4 Gamma revise at the keyboard Make sure that the brightest green raster appears on the projection screen Apply an on the middle of the screen and make sure the illuminance then input the measured value from the keyboard The host computer automatically calculate the three point Gamma temporary valu...

Page 105: ...rd 2 Make sure that the top line of following messages appear on the monitor screen Creat New HEX file Y N Y File name 004 File Data Transfer Flash ROM download program Parity None Stop Data Length 8 Download Area GAMMA GAMMA Are you sure y n Y Flash download was successfull Figure 5 23 3 Type at the keyboard if all settings are OK The image adjustment program starts programming the set values int...

Page 106: ... Do not run this menu option at site unless specifically so specified If you inadvertently type 6 Set ROM Initialization at the keyboard type until the following messages appear Initialization Port Baud rate 9600bps Parity None Stop bit 1 Data Length Down Load Aria GAMMA GAMMA File GMINT GAM Are you sure y n Figure 5 24 9 End Type 9 at the keyboard to terminate the image adjustment program The pro...

Page 107: ...Appendix ...

Page 108: ...r Supply Unit 2022611 2 2 Ballast Circuit Assembly 2022612 1 2 3 SCI Cable 2023104 10 2 4 Receptor Board Block 2022614 1 2 5 Receptor Board Block Fixing Screw 1033122 100 3x6 3 Lamp Connect B Fixing Screw 1021824 100 3x8 100 3x8 5 Supply Unit Fixing Screw 1021824 100 3x8 6 Unit 1031100 1 1021824 100 3x8 103301 Inlet Board Fixing Screw 10218241 6 l 7 7 l 7 l 1 7 l 2 7 l 3 Interface Unit Fixing Scre...

Page 109: ... 10 7 2 7 Condenser Lens R 1031349 1 7 2 8 Condenser Lens G 1031350 1 Condenser Lens B 1031351 10 7 2 l 0 Condenser Lens D 10313521 7 2 l 1 Condenser Lens E 10318271 7 2 l 2 Lens Adjust Unit 1031353 1 7 2 l 3 Mirror A 1031334 1 7 2 l 4 Mirror R 1031335 10 7 2 l 5 Mirror B 1021710 10 7 2 l 6 C D M 1031336 10 7 2 l 7 G D M 1031337 10 7 2 l 8 Glass Hold 10313 7 2 22 B 1031342 10 Hold Spring 1021734 1...

Page 110: ...v 3001944 1 Board Fixing Screw 10331221 20 Board Fixing Screw 21 Cable Fixina Screw I 10218231 10330251 I 22 B To B Connector A 2023248 10 23 B To B Connector B 2023249 10 24 ROM 3002000 10 25 Plate 26 Plate Fixina Screw I 1 0 3 3 2 2 5 1 10331221 27 FG Mesh 2023824 10 28 Upper Case Unit 1031108 1 28 l Upper Case 1033022 10 28 2 Receptor Filter 1031111 IO Clip Nat 10315471 28 4 Speaker 2022618 10 ...

Page 111: ...t 4006220 100 42 JAN Code Label 1031068 10 43 Caution Label A Lamp Exchange 1031923 10 44 Label B Never Look I 10332891 45 Label C 10332911 Label D I 10334541 101 Manual Set 1 I 40062271 48 User s Manual A English 4006228 10 49 User s Manual B French 4006229 10 50 User s Manual C German 4006230 10 51 User s Manual Set 2 4006231 I 52 User s Manual D Italian 4006232 10 53 User s Manual E Spanish 400...

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Epson RS-353, Service Manual

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