LCD Rear Projection
Contents
1. DESCRIPTION PART NUMBER KL W7000 W9000 SERVICE MANUAL 9 965 180 01 KL W7000A W9000A SERVICE MANUAL 9 965 237 01 C BOARD EXTENSION CABLE J 6082 031 A Solution If the customer complains of a symptom requiring replacement of a service assembly Use the appropriate table below to order the correct replacement service assembly Functional Descriptions are provided to help locate the failed Service Assembly KL W7000 amp KL W7000A SERVICE ASSEMBLY PART NUMBERS REF DESCRIPTION KL W7000 KL W7000A PART NUMBER PART NUMBER 10 59 64 65 67 KL W7000 amp KL W7000A SERVICE ASSEMBLY PART NUMBERS CONT DESCRIPTION KL W7000 KL W7000A PART NUMBER PART NUMBER 68 LAMP BLOCK ASSY A 1482 758 A A 1501 247 A 113 C BOARD ASSY A 1335 094 A A 1335 110 A 19 1 475 523 2 2 1 698 696 11 A 1331 875 A REMOTE COMMANDER 1 475 384 11 1 475 384 11 KL W9000 amp KL W9000A SERVICE ASSEMBLY PART NUMBERS 0 ee KL W9000 KL W9000A PART NUMBER PART NUMBER 151 K BOARD ASSY A 1380 551 A A 1380 551 A omnis T aan ae AAA A 1311 631 A A 1311 631 A A 1298 254 A A 1298 732 A A 1135 929 A A 1135 929 A2 A 1373 632 A A 1373 713 A 4 051 312 01 X 4034 041 1 A 1390 763 A A 1390 908 A 15 A 1390 762 A A 1390 907 A T ak 1 eka E nen hasan 18 A 1501 247 A A 1501 247 A 69 A 1335 094 A A 1335 110 A 75 1 475 523 11 1 475 523 11 meet 1 sane cuBoarDassy NA A 1331 875 A cana aa ee FUNCTIONAL DESCRIPTIONS AND TROUBLESHOOTING2. The Functional Descriptions And Troubleshooting Guide is completed Sonv Service Companv A Division of Sonv Electronics Inc O2000 All Rights Reserved Printed in U S A SONY isatrademarkof Sony Electronics SONY SEL Service Company A Division of Sony Electronics Inc 1 Sony Drive Park Ridge New Jersey 07656 TVP111100 Printed in U S A
3. RGB HS VS E CN602 Sr De F RGB HS VS MEM E VGA EEE SEHE TO CN1001 FROM HA BOARD y 2 HC CY DC SYNC E PROCESS BACK TO VGA2 IC103 CONNECTOR EEPROM BACK TO VGA1 IC102 CONNECTOR EEPROM KL W7000A AND KL W9000A ONLY SWITCHING 1TVP11 1284 11 8 00 CN1002 CN4401 x FROM i VIDEO CN601 SELECT U BOARD A D SW CHROMA DECODER YO Y8 CO C8 3D gt TO l HP COMB ON IC1101 FILTER SVSCON MEMORV gt A BOARD KL W7000A AND KL W9000A ONLY VIDEO PROCESSING 2TVP11 1285 11 8 00 14 15 CN3002 CN3003 Y MID 2VS FROM A BOARD CN4002 CN4006 3 2 30 7 C BOARD OSD CN4005 CN4001 BB BOARD FIELD MEMORY MID RGB I F 3TVP11 1286 10 18 00 CN5201 FROM CN4006 a de Im LCD DRIVER LCD DRIVER LCD DRIVER LCD CONTROL al LCD DRIVE CN5001 LCD PANEL R CN5002 LCD PANEL G CN5003 LCD PANEL B 4TVP11 1287 10 17 00 APPENDIX SONY CONFIDENTIAL National Technical Services service Bulletin A Division of Sony Electronics Inc Park Ridge ee TV Products Model KL W7000 KL W7000A KL W9000 No KL W9000A 392R3 Subject Service Assembly Replacements Date December 29 1999 Symptom 117X The unit develops a malfunction that requires parts replacements A service assembly may need to be replaced in order to affect prompt repair of the unit Part Numbers for ordering the Service Manuals are listed below
4. e Retighten the locking screws 5 Put new loctite on the screws that have been moved and allow it to set before transporting me y Locking Screws F q O vertical Adjustment Horizontal Adjustment i Naskiit Adjustment Svstem Control Overview The svstem control circuit is responsible for the User Interface and Pro tection Circuits The User Interface consists of the kev and remote con trol inputs and the outputs for the LEDs on the front panel The EC bus is an extension of the User Interface and sends and receives data from various ICs to operate the unit The protection circuits turn the unit OFF when a problem occurs There are also Self Diagnostic indicators User Interface The kev and remote control inputs receive commands from the user when a button is pushed on the front panel or remote control These com mands will cause IC1101 System Control to send EC data to certain ICs or place various control lines to a specific state tvpicallv HIGH or LOW Let s use Power On OFF as an example When the Standby switch on the HB board is closed a LOW is placed on CN1009 8 This line is con nected to the MPWRN input of IC1101 System Control When the IC receives this LOW it outputs a HIGH from the POW CTL line This turns the G board power supply ON The G board supplies power needed by the rest of the set including the DC voltage used by the Lamp Power Block During this time the Power LED is flashing The Power
5. LED is green IC1101 System Control checks the protect interlock inputs and outputs signals to turn the fans ON If all is OK then IC1101 System Control outputs the O Lamp CTRL signal This turns the power supply ON in the Lamp Power Block assembiv When the Lamp Power Block is working correctiv a signal is sent to the Lamp Prot line of IC1101 System Con trol This takes about seven seconds For a split second the HID Lamp then comes on dimiv and then brightiv The Power Led stops flashing at this point and stavs ON At this time a dim picture should be seen on the screen It can take up to five minutes for the picture to get to its maximum brightness If the set is turned OFF and then turned back ON the time it takes for this to occur will be longer As long as the Standby switch is closed the set can be turned ON and OFF with the remote control The sequence to power the set will be the same The only difference would be that when you turn the Set OFF using the remote control the Standby LED will be ON The Standby LED is orange Protect Circuits This set contains various protect lines that are designed to ensure that the lamp is receiving proper ventilation and voltage Some of these men tioned in the previous section are for the filter cover lamp cover and fan protect inputs The filter and lamp cover each close a switch when they are in the proper position If they are not in the proper position the set will shut down The fan
6. The signals are output to CN3003 11 9 and 7 This circuit also outputs sync and an YS signal for OSD signals The RGB I F uses a RGB Decoder which contains a matrix to convert the VUV signals to RGB if applicable The OSD signal is mixed with the video at this point The signal is then output to the RGB I F This circuit is used to set the cutoff and drive levels for the R G and B signals These are adjustments in the Service Mode LCD Drive The LCD drive circuit contains three identical LCD driver circuits and a LCD Control circuit The LCD Control circuit controls the timing for each of the LCD Drivers The LCD Drivers produce three signals for each color These signals along with the timing signals from the LCD Control create an image by manipulating the crystals inside the LCD The light from the HID Lamp which has been separated to the three colors is passed through the LCD The light that passes through the three LCDs is then combined in the dichroic prism The light is the reflected off of the mirror in the upper cabinet to be seen through the fresnel and lenticular screens on the front of the set INPUTS AND SWITCHING U BOARD VIDEO PROCESSING A BOARD RGB LCD I F DRIVE A BOARD C BOARD MID BB BOARD VIDEO BLOCK 12 6TVP11 1289 11 3 00 VIDEO OUT CN5 10 CN 4401 ABOARD REAR INPUT JACKS 6 V1 Y C CV CV Y CN601 TO FTI e Bl C601 SW SDA J102 DVD Y SCL VIDEO OUT R Y BY CV Y C
7. mode The native scan mode is 480P This means that 480 usable vertical lines are scanned progres sively to make a picture A whole frame is displayed one line at a time as opposed to using two fields of alternate odd and even lines to comprise one frame Therefore the vertical scan rate of the LCDs is 60Hz and the horizontal scan rate is 31 5kHz Repair Notes e The remote supplied with these units cannot be used to enter the service mode You can enter the service mode by using a regular TV remote control and pressing Display 5 Vol Power in rapid suc cession while the unit is in the standby mode e Ifthe A board is replaced to repair a unit the following steps must be taken 1 Remove the NVM IC1103 from the new board 2 Remove the NVM IC1103 from the old board and install it in the new board Course Objectives These models are repaired to board level This course has the following objectives e Explain the theory of a rear LCD projector so that the students under stand how it works e Explain the uses for the different modes so that the students know when to use each mode e Explain the circuitry in blocks so that the students can troubleshoot the units to board level e Show students how to do the mechanical convergence alignments so they can perform them on site when repair is necessary Features Overview The KL W7000 KL W9000 KL W7000A and KL W9000A are LCD rear projection data moni
8. A board to be switched to the C Board The A Board is responsible for processing L R Audio for the K Board It contains the System Controller IC1101 and receives commands and outputs status signals to the HA Board The A Board also receives Power command from the HB Board Power SW TB Board Filter Cover SW and TA Board Lamp Cover SW It controls the Lamp Power Block Lamp Driver and ventilation fans Fan1 Fan2 A malfunction here will Cause incorrect or unstable picture or loss of other functions due to sys tem control failures BB Board Assembly MID Multi Image Driver This circuit board contains the A D Converters for the three Video compo nents Y R Y and B Y It includes the Multi Image Driver and Field Memories used for scan conversion A malfunction here will cause incor rect colors loss of picture or broken up or unstable picture U Board Assembly Video 1 and 3 A V Inputs A V Output and A V Select This circuit board contains the Video 1 and 3 S Video and Composite Video Inputs Video 1 and 3 left and right audio inputs are also contained here RGB 1 audio and video connectors are on this board and contain the A V select switch circuits The U board receives front panel Video 2 A V inputs from the HA Board and output A V signals to the A Board It contains the Video Out S Video and Composite and Audio Out L R connectors A malfunction here will cause loss of A V Output K Board Assembly Audio Processor an
9. C5004 It receives the video and Sync timing signals from the A Board C Board includes Color Uniformity Circuits controlled by the CU Board in the KL W7000A and KL W9000A A malfunction here will cause incorrect colors or loss of picture Ref 119 Optical Unit LCD Modules Prism and Lens Assembly This unit includes the 3 R G B LCD imaging modules It contains the optical prism assembly used to converge the LCD images It includes the optical lens used to form the image on the display screen The LCD drive signal are received from the C Board The light is input from the Lamp Block assembly A malfunction here will cause incorrect colors or loss of picture Ref 126 Fan DC Ventilation 2 Fans These fans are used to ventilate the Lamp Block and Optical Unit They are driven from the A Board A malfunction here may cause overheating and potential dam age to unit Ref 127 CU Board Assembly KL W7000A and KL W9000A Only Color Uniformity Correction Generator Generates correction signals for Red Vert and Red Horiz color uniformity Gener ates correction signals for Green Vert and Green Horiz color uniformity Correc tion signal levels are adjusted with VR controls on the CU Board and output to the C Board to improve Wide Screen color and white uniformity A malfunction here will cause incorrect color uniformity in the picture Remote Commander IR Remote Control This unit provides remote control commands via infrared IR beam
10. GUIDE Note Refer to the Service Manual schematic diagrams for circuit details Ref 1 K Board Assembiv Audio Processor This circuit board receives audio signals from the A Board and drivers the speak ers A malfunction mav cause loss of one ore more audio channels audio noise or distorted sound output A malfunction here will cause distorted sound or loss of audio Ref 3 Lamp Power Block Lamp Power Driver This circuit board receives power from the G Power Supply Board It receives control signals from the A Board It drives the Lamp Block Assembiv A malfunc tion mav cause loss of light or incorrect brightness from the Lamp A malfunction here will cause incorrect brightness or loss of picture Ref 5 G Board Assembly Power Supply This circuit board provides the main power voltages 20VDC 10VDC 5vdc 17VDC and Standby 5VDC It receives the AC Input On Off control from the A Board The GA Board contains the switching regulator controller IC601 for this board A malfunction here will cause incorrect or no system operation Ref 6 GA Board Assembly PS Power Controller This circuit board contains the switching regulator controller IC601 for the Power Supply G Board A malfunction here will cause incorrect or no system operation Ref 7 A Board Assembiv Video Processor and Svstem Controller This circuit board processes the input video signals for the LCD Drivers C Board It includes the Chroma Decoder for the C V
11. M LAMP CONTROL HD6473947 IT2 AA SDA m7 CB 2 SCL LAMP PROT lt FLAG CN1011 7 aa POW CTL TO CN1005 He G BOARD A BOARD ee A a SYSTEM CONTROL 5TVP11 1288 11 9 00 10 Video Block Overview This section explains the various blocks of the video path Itis supported by drawings on the following pages that show the circuit boards and con nector locations of the major signals Use these drawings as a guide to important signals Inputs and Switching The video input jacks located on the front and back panels accept NTSC Composite and S Video signals as well as computer RGB inputs All signals are eventuallv routed to the U Board which contains the A V Switch and the Input Select switch which is responsible for switching the VGA RGB and Sync signals The NTSC signals are sent to the A Board via CN601 and the VGA signals are routed to the A Board via CN602 IC102 and IC103 are NVMs that are used for DDC1 and DDC2B compat ibilitv These ICs are used to communicate with the video card about resolutions accepted by the monitor Video Processing The video processing circuit is responsible for taking the NTSC Compos ite or S Video and converting it to Component Video It also selects the proper video source There is a switch to select between NTSC Compos ite S Video and the NTSC DVD Input There is another switch to switch between the processed NTSC and RGB inputs If composite video is input it
12. SONY LCD Rear Projection LJ 2T Chassis LJ 2 Chassis Models KL W7000 KL W7000A KL W9000 KL W9000A Circuit Description and Troubleshooting Course TVP 11 Training Manual KL W7000 Introduction Course Objectives Features General Specifications Video Audio Inputs Outputs Picture Modes Board Descriptions How it Works One Piece Light Engine Convergence Adjusting Method Adjusting Procedure Svstem Control Table of Contents 1 h O o o ao N NOOAOAODNDNNDN Protect Circuits Video Block Inputs and Switching Video Processing MID Multi Image Driver RGB I F LCD Drive Switching Diagram Video Processing Diagram MID RGB I F Diagram LCD Drive Diagram Appendix Service Bulletin 392R3 11 11 11 11 13 14 15 16 Introduction Overview The course covers the following chassis and models of rear projection LCD data monitors These two chassis have the same circuitrv except the LJ 2 has DVD component inputs and a Color Uniformity circuit The color uniformitv circuit is similar to the shading circuit in a conventional rear projection television Chassis Models _ _ LJ 2T KL W7000 KL W9000 KL W7000A KL W7000A All of these models are LCD rear projection data monitors with a 16 9 widescreen aspect ratio They accept many computer RGB input reso lutions and scan rates These signals are input to an internal scan con verter that converts them to a native scan
13. TTL high impedance sync positive nega tive e Horizontal sync TTL high impedance sync positive negative e VD Vertical sync TTL high impedance sync positive negative e Audio RGB 1 IN phono jacks Two channels Impedance less than 5 kohms e AUDIO RGB 2 IN stereo mini jack Two channels Impedance more than 47 ohms Picture Modes Although these models have a 16 9 aspect ratio screen thev can displav video in five different modes Normal Mode Normal mode is for watching video that is in the normal 4 3 aspect ratio Full Mode This mode is for watching a picture recorded originallv in a 16 9 format and then compressed to 4 3 format This mode enlarges the picture only in the horizontal plane Zoom Mode Use this mode when watching widescreen video with black bands above and below the picture letterbox and sub titles located in the picture The picture is enlarged horizontally and vertically so that the black bands dis appear and only the picture is visible If a 4 3 picture is input in this mode the top and bottom will not be seen Sub Title Mode Use this mode when the video is in the 16 9 aspect but the sub titles are located in the black bands at the bottom of the picture This mode will enlarge the picture so that the top bands are removed and the bottom is still shown Wide Zoom Mode The wide zoom mode enlarges the picture both horizontally and vertically and then compresses the top and bottom of the p
14. The en gine works when light is emitted from the HID Lamp The HID Lamp emits light when the Power Lamp Block applies 25kV to it The HID Lamp works by using the 25kV to create a short arc that creates an even uni form white light which contains color components across the spectrum of light The light is sent through a lens array that separates the light into its vari ous colors This light is sent through a series of one way mirrors that pass or reflect only specific colors of light These colors are red green and blue These mirrors work to deliver only red green and blue light to the LCD for that color After the light passes through the three LCDs it is sent through a dichroic prism The dichroic prism takes the three colors of light and recombines them The recombined colors now contain the picture due to the manipu lation of the crystals inside each of the LCDs This picture is sent through a focusing lens The focusing lens keeps the picture focused on a mirror The mirror is used to reflect the picture onto the fresnel and lenticular screens These screens are similar to the screens used in standard rear projection televisions Convergence Overview Converging a rear projection LCD unit differs greatly from a standard type rear projection TV This is because there is no magnetic deflection or sub deflection circuits in a LCD rear projector The alignment then becomes purely mechanical since the geometry of the picture is
15. d Output This circuit board receives audio signals from the A Board and drives the speakers A malfunction may cause loss of one or both audio channels audio noise and or distorted sound e Lamp Power Block E lay Jrs TB Board Assembiv Filter Cover Switch This circuit board contains the interlock switch activated bv the ventilation Filter cover If the filter is not installed or the switch fails the unit will not operate TA Board Assembiv Lamp Cover Switch This circuit board contains the interlock switch activated bv the Lamp cover If the Lamp cover is removed or the switch fails the unit will not operate HB Board Assembiv Power Switch This circuit board contains the main Power Switch HA Board Assembiv Video 2 A V Input User Controls This circuit board contains the Video 2 S Video and Composite Video inputs along with the left and right audio inputs RGB 2 Video and Audio input connectors are also on this board The HA board includes the User control Key Matrix and Power LED and includes the Headphone connec tor This board outputs A V signals to the U Board and also outputs user control commands to the A Board It receives the Power Led signal from the A Board A malfunction here will cause no A V No 2 Input or incor rect user controls C Board Assembiv Liquid Crvstal Displav LCD Driver This circuit board contains the LCD driver circuits that drive the 3 R G and B LCD modules contained in the Optica
16. icture so that all of the video in a 4 3 picture can be seen This differs from the Zoom Mode in which the top and bottom of the picture will not be seen Keep in mind that the top and bottom of the picture will suffer from aspect distortion due to the vertical compression FULL EXPANDED SUBTITLE BOTTOM COMPRESSED WIDEZOOM TOP BOTTOM COMPRESSED NOTES Board Descriptions Lamp Power Block Lamp Power Driver This circuit board receives power from the G Power Supply Board It receives a turn ON signal from the A Board and will output a protect signal to the A board if it is malfunctioning It drives the Lamp Block Assembly A malfunction mav cause loss of light or incorrect brightness from the Lamp G Board Assembiv Power Supplv This circuit board provides the main power voltages 20VDC 10VDC 5vdc 17VDC and Standby 5VDC It receives the AC input from the line cord and Power On Off control from the A Board A malfunction here will cause incorrect or no system operation GA Board Assembly PS Power Controller This circuit board contains the switching regulator controller IC601 for the Power Supply G Board A malfunction here will cause the power supply not to operate A Board Assembly Video Processing and System Controller This circuit board processes the input video signals These signals are processed and sent to the BB Board for MID Processing After Mid Pro cessing the signals are returned to the
17. ideo input It includes the A D convert ers and Frame memories for the Comb Filter It uses the A D converters and Frame memories on the BB Board for the video time base conversion It contains the System Controller IC1101 It receives Video and Audio signals from the U Board Processes L R Audio for the K Board Receives commands and outputs status signals to the HA Board It receives Power command from the HB Board Power SW TB Board Filter Cover SW TA Board Lamp Cover SW It con trols the Lamp Power Block Lamp Driver and ventilation fans Fan1 Fan2 A malfunction here will cause incorrect or unstable picture or loss of other functions due to system controller faults Ref 9 BB Board Assembly 3 Channel A D MID and Field Memories This circuit board contains the A D Converters for the 3 Video Channels Y R Y B Y It includes the Memory Interface Decoder and Field Memories for the video time base conversion A malfunction here will cause incorrect colors loss of picture broken up or unstable picture Ref 10 U Board Assembly A V No 1 amp 3 Input A V Output Terminal A V S e l e e t This circuit board contains the Video No 1 8 3 S Video amp Comp HD 15 RGB and Audio No 1 8 3 L R input connectors It contains the A V select switch circuits It receives front panel No 2 A V inputs from the HA Board It outputs A V signals to the A Board It contains the Video S Video amp Comp and Audio L R output con
18. is A D converted and input to the 3D Comb Filter The 3D Comb Filter separates the digitized composite video s Y and C signals The separate Y and C are output as 9 bits each to the Chroma Decoder The Chroma Decoder converts the digitized V and C signals to the Y R Y and B Y components If an S Video signal is input then the Y signal is digitized using the same path as composite video and the C signal is applied directly to the Chroma Decoder The signals input to the Chroma Decoder are converted to V R Y and B V 11 These components are D A converted and output to the Video Select Switch The Video Select Switch switches between these component signals or the component signals input at J102 DVD In The selected component signals are input to the BB Video Select switch This switch selects either the component signals input or the RGB signals input from CN1001 These RGB signals come from the RGB 1 or RGB 2 VGA in puts MID Multi Image Driver RGB I F The Multi Image Driver circuit functions as a scan converter It converts any signals it receives to 480P format This means that the horizontal frequency at the MID 2HS output is 31 5kHz and the vertical frequency at the MID 2VS is 6OHz This circuit is similar to the MID circuit in the KP 53XBR200 The YUV or RGB signals from the A board are input to the BB board at CN3002 10 8 and 6 These signals enter the MID circuit where they are digitized and scan converted to the 480P format
19. l Unit It contains the LCD video signal buffer circuits and the LCD Timing Signal Generator IC5004 The C board receives the video and Svnc timing signals from the A Board and includes Color Uniformitv Circuits controlled bv the CU Board in the KL W7000A and KL W9000A A malfunction here will cause incorrect colors or loss of picture Optical Unit LCD Modules Prism and Lens Assembly This unit includes the 8 R G and B LCD imaging modules It contains the optical prism assembly used to converge the LCD images and in cludes the optical lens used to form the image on the display screen The LCD drive signals are received from the C Board The light is input from the Lamp Block assembly A malfunction here will cause incorrect colors or loss of picture Fan DC Ventilation 2 Fans not shown in picture These fans are used to ventilate the Lamp Block and Optical Unit They are driven from the A Board A malfunction here may cause overheating and potential damage to unit CU Board Assembly KL W7000A and KL W9000A Only Color Uni formity Correction Generator not in picture This board generates correction signals for Red Vertical and Red Hori zontal color uniformity It generates correction signals for Green Vertical and Green Horizontal color uniformity Correction signal levels are ad justed with VR controls on the CU Board and output to the C Board to improve Wide Screen color and white uniformity A malfunction here will cause i
20. ncorrect color uniformity in the picture d da i LI u e LI a d q a b Hi n ki fag g a G A a Li mal pr do al E a pit LEL em ir E y 3 3 ii E Md E ma ha ar s i A a al Optical wale gg Me i E gt a J eo F l a os JEM i EPA o ia us ome EM k Elo ssembly et ee E J a S al E a l U ri A i a ila mel H a r E A ho as E k e a a m a RE iga r s i r El E LI a a i i EA aw us AS TB Board How it works Overview This section describes how the LCD Rear Projection Data Monitor differs from the standard rear projection television The main difference between the LCD rear projection system and the standard tube type rear projec tion television is the use of LCDs instead of picture tubes Instead of using three tubes this system uses three LCDs Since there are no pic ture tubes there is no High Voltage deflection sub deflection or tube biasing circuits These are replaced with a High Intensity Discharge HID Lamp and a timing generator for the three LCDs o mn o ma o LED DEN Gi li f im l gi ig T wl i a a la A a u B E ago T L al a a E E ri ia A Cs e u ajja ee alia e ei mag a I jal A El EP ra u gu A AA f mal a dl 1 A bs ta o y 2 di F o Boe One piece Light Engine The HID Lamp and LCDs are used in conjunction with a dichroic prism and various lens assemblies to form the one piece light engine
21. nectors It outputs A V signals to the A Board A malfunction here will cause loss of A V No 1 or 3 Input or A V Output Ref 64 TB Board Assembly Filter Cover Switch This circuit board contains the interlock switch activated by the ventilation Filter cover Al Ref 65 TA Board Assembly Lamp Cover Switch This circuit board contains the interlock switch activated by the Lamp cover Ref 66 HB Board Assembly Power Switch This circuit board contains the main Power Switch Ref 67 HA Board Assembly A V No 2 Input User Controls This circuit board contains the Video No 2 S Video amp Comp HD 15 RGB and Audio No 2 L R input connectors It includes the User control Key Matrix and Power LED It includes the Headphone connector It outputs A V signals to the U Board It outputs user control commands to the A Board It receives the Power Led signal from the A Board A malfunction here will cause no A V No 2 Input or incorrect user controls Ref 68 Lamp Block Assembly Lamp This assembly contains the Lamp that illuminates the 3 x LCD Optical Unit provid ing the displayed image A malfunction here will cause incorrect brightness or loss of picture Ref 113 C Board Assembly Liquid Crystal Display LCD Driver This circuit board contains the LCD driver circuits that drive the 3 R G B LCD modules contained in the Optical Unit It contains the LCD video signal buffer circuits and the LCD Timing Signal Generator I
22. not adjusted elec trically There are three mechanical adjustments These adjustments align the LCDs on an angle skew horizontally and vertically Adjusting Method As with other rear projection systems the green color is located in the middle In this case the green LCD has no adjustments therefore it is the reference color Red and blue are to be adjusted until they converge to green Turning three adjustment screws performs these adjustments These screws are positioned so that when you turn each of them a plate moves that adjusts the position of the LCD These plates are spring loaded so that when the screws are tightened they push the plate and when they are loosened the plates are pulled back These adjustments are not as easy as they appear They can be very tedious because it is difficult to get to some of the adjustment screws Also when turning the screws the spring loaded plates have a tendency to stick Gently tap the assembly with the end of a screwdriver to make sure the plate has moved as much as it should Adjusting Procedure 1 Input a crosshatch pattern into the Video 1 input 2 Place the unit in Full Mode 3 Loosen the Locking screw for the color you want to adjust 4 Perform the mechanical alignments for the misadjusted color s in the following order You may have to use a solvent to loosen the loctite on the screws a Angle Skew b Horizontally c Vertically d Repeat above steps if necessary
23. s produce a signal and DC voltage dependent upon how fast they are turning If the fans stop turning the unit will shut down or not start There is an Temp Prot input on the System Control IC1101 This signal comes from the C board The circuit it comes from uses a thermistor mounted close to the dichroic prism If the prism becomes too hot the value of the resistor rises until it turns a transistor ON The LOW signal from that transistor is input to Temp Prot input of IC1101 System Con trol One more protect input to IC1101 is the Lamp Prot line If the Lamp Power Block malfunctions or the HID Lamp is burnt out this line will acti vate If the HID Lamp fails it is usually evident because it turns black and there would be pieces of glass inside the HID assembly IA Power Green Standby Orange Lamp Red OFF Flashing Flashing OFF Flashing Flashing Fan Plot1 Flashing Flashing Flashing Fan Plot2 Flashing Flashing Flashing Temp Protect Flashing Flashing Flashing Lamp Protect OFF Flashing as FAN PLOT 1 FAN 9V FAN 1 FAN PLOT 1 TO CN4006 C BOARD 6 TEMP PROT CN5201 IMPWRN a ii CN8031 i EH jil HB BD CN1012 I FILTER COV ES CN9551 TBBD KEY 0 l S9551 c IO CN9501 r TO HA ISIRCS IN LAMP COV 1 TABD CN8003 81 0 STBY LED vi ern LAMP Jgs en FANPLOT2 E FAN 2 EH 0 POWER LED O FAN CTRL ay is CN1108 IC1101 E SYSTE
24. tors with a 16 9 widescreen aspect ratio These data monitors use an internal scan converter to display many different types of video signals including NTSC and RGB General Specifications Projection System e 3 LCD panels 1 lens projection system LCD e Three 1 35 TFT LCD panels e Approx 1 54 millions dots 512 880 pixels each e 1068 5 x 480 dots x 3 panels Lamp e XL 100U HID lamp 100W Color Reproduction e 16 7 million colors Acceptable Signals e NTSC video signals e RGB signal Horizontal Scan Range e 31 5kHz 50 0kHz Vertical Scan Range e 50Hz 85Hz Maximum Resolution e 1376 x 768 60Hz with Digital Multi Image Driver Plug and Play e DDC1 and DDC2B compatible Video Audio Inputs Outputs Video 1 2 and 3 IN e Composite Video phono jacks 1 Vp p 75 ohms unbalanced sync negative S VIDEO VIDEO 1 3 IN only Y 1 Vp p 75 ohms unbalanced sync negative C 0 286 Vp p burst signal 75 ohms DVD Component input KL W7000A and KL W9000A only AUDIO phono jacks Two channels Impedance more than 47 kohms VIDEO OUT S VIDEO Y 1 V p p 75 ohms unbalanced sync negative C 0 286 Vp p burst signal 75 ohms Composite Video phono jacks 1 Vp p 75 ohms unbalanced sync negative e AUDIO phono jacks Two channels Impedance less than 5 kohms RGB 1 2 IN e VIDEO D sub 15 pin female R G B 0 7 Vp p positive 75 ohm ter minated Sync on Green 0 286 Vp p e SVNO HD Composite sync
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