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JVC Model 200 User's Manual

1. Light lt from Arc Lamp Light Valve Bias Figure 2 18 The Hughes JVC Image Light Amplifier Optically there are two sides to an ILA assembly with a light blocking layer in the center On the input side there is a photo conductive layer where the image from a CRT is focused through a relay lens This image is electrostatically coupled through the light blocking layer and mirror to a liquid crystal layer on the output side of the ILA assembly Model 200 Service Manual 2 63 Chapter 2 System Description High intensity light from a Xenon Arc Lamp is applied through a prism where it is polarized to the output side of the ILA assembly where the liquid crystal layer is located The polarized light passing through the liquid crystal is modulated changing the polarity of the light waves in accordance with whatever image is on the input side of the ILA assembly The axis of the polarized light is proportional to the brightness on the input side of the ILA assembly When the photoconductor on the input side is not illuminated the liquid crystal does not rotate the polarized light from the Arc Lamp No light passes through the prism and the screen is dark When the input side is fully illuminated the liquid crystal rotates the polarized light 90 from a horizontal direction to a vertical direction Ninety nine percent 99 of the light entering the ILA assembly is reflected and
2. No Slave Ack on first poll of Convergence Deflection PCB CD PCA Not OK CD_OK is high BAD 4 3 HVD PCA Missing No Slave Ack status on first poll of Horizontal Vertical Deflection PCB HVD PCA Not Ok HVD_OK is High BAD HVD_OK requires RTG Timing VA PCA Missing No Slave Ack status on first poll of VA Table 5 2 Error Codes continued 5 4 Model 200 Service Manual Chapter 5 Troubleshooting VA PCA Not OK VA_OK is High BAD 4 6 4 14 Lamp Startup Lamp Failed to light LAMP_LIT_B not Low for 3 seconds out of 20 seconds Low Voltage PS Low Voltage PS failed LV_OK_B is High High Voltage PS High Voltage PS failed HV_OK_B is High 4 24 Lamp Start Not On LAMP_OK is high lamp module not installed jumper missing ALPS bad Most Category 6 error codes indicate RS232 communication errors and apply to Switchers only Sync Timeout No Header found in data stream possible baud rate error No Char Repeat Expected data characters to be repeated failed Invalid Format Data not in Extron or JVC Switcher format 7 1 Write Len Error Ansi Output to RS232 port was interrupted incomplete VIC Slot is empty User has selected a Channel VIC is not present 8 2 VIC Type Changed User has selected a Channel VIC type has changed User may have swapped a VIC into an incorrect slot 8 3 Interpol Blocked
3. 6 Replace the covers in reverse order from above When replacing either cover make sure the slot in the cover fits over the bottom of the projector case or the cover will not close correctly 4 3 Air Filters Air filters should be cleaned whenever necessary In extremely dusty or dirty conditions the filters should be cleaned more frequently Remove the filters and vacuum them or blow them clean with compressed air They may also be washed with soap and water There are 4 polyurethane air filters in the Model 200 that require periodic cleaning They are located as follows e 1 metal framed filter in the rear of the projector in the bottom cover accessible when the rear cover is off Figure 4 1 e 1 filter on the bottom of the projector slides out from the middle left side of the projector grasp the hole in the filter frame The filter can be peeled off the Velcro on the frame if necessary Figure 4 11 e 1 filter under the front cover on top of the Arc Lamp and Optical Assemblies accessible with the front cover off Figure 4 1 This filter is also a peel off type e 1 metal framed filter in the front left bottom cover accessible with the front cover off Figure 4 11 4 4 Arc Lamp Assembly The Arc Lamp Assembly consists of the Arc Lamp the Ignitor and the Laser Power Supply housed inside a Lamphouse Dock An Arc Lamp can be removed and replaced separately from the entire assembly The Ignitor and Laser Power Supply a
4. Introductioni al A nnt 2 1 2 2 Optical Sectioni cia aaa ini 2 2 2 3 ElOCIONICS SYSUCM tai ei A AAE N Ea a 2 7 2 4 Image Light Amplifier Technology c sccceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeenaaeees 2 63 Chapter 3 Service Adjustments 3 1 Arc Lamp Focus and Alignment cnn nn r cnn r nn nnrn ranas 3 1 3 2 Arc Lamp Current Setting ata epea a ankaa Eei 3 4 3 3 Electronic Module Tilt Up nnen nee 3 5 Bm LA Back Focus stati rene core A ten pere enni 3 5 3 5 CRT Mechanical FOCUS nan nr rn a a enie 3 7 3 07 CRI Rotation taria 3 9 3 CRT Electronic Focus ina dies 3 10 A A a a a i 3 10 3 9 Jumper Settings Front Rear or Inverted Vertical 3 12 3 10 Vertical and Horizontal Size Settings ooonnnncnnninnnnoncccnnncnnnancncarnccnnnnnnnns 3 13 3 11 Software UPdaliig contain ra ee a e eas 3 15 3 12 Cleaning Lenses ILA Assemblies and Mirrors iii 3 17 Chapter 4 Maintenance Removal Replacement Ail Introducido 4 1 4 2 Projector COVES at ce aie carted cat suttige ria 4 4 ASA Bl RR RA La 4 5 44 Are LampAssemblyi rino narra atei 4 5 4 5 Arc Lamp Power Supply errereen eae r ar A e E a AR SEa 4 8 4 6 Low Voltage Power SUpplYiiainnd li 4 8 4 7 High Voltage Power SUPpIV coito il ts 4 8 4 8 Raster Timing System Controller Video Processor PCBs 4 10 4 9 Convergence Deflection
5. Stop Pause Bytes 0 Receiving EXPORTI TXT 5 Model 200 Menu Press ENTER key to start export download NOTE Some VT100 Emulator programs ProComm will send the ENTER automatically when step 4 3 above is performed Expect 10 minutes to export 20 sources 500 000 bytes at 9600 baud Data Transfer will begin and continue until all source channel channel source combination and system data has been exported The following dialog is displayed on the projector screen during the transfer Export Configuration EXPORT IN PROGRESS wait Press ESC to Abort The following message is sent at the end of the export data 4 44 444 4 4 4 4 44 4 4 44 4 Export Complete STOP Host Download Now Then Press ESC 444 4 4 4 4 4 AAA AAA END A similar message is displayed on the projector screen Export Configuration EXPORT COMPLETE gt STOP Host Download gt THEN Press ESC 6 Windows TERMINAL Select the Windows TERMINAL STOP button with the mouse to end the Receive Text File transfer 7 Model 200 Menu Press Esc to exit the projector Export operation and return to the Maintenance Menu IMPORT l Know the directory and filename for uploading the Import Data The Windows TERMINAL Transfers Send Text File dialog box will default to the C windows directory which contains several txt files SETUP TXT is NOT a Pro
6. J68 RED_BEAM a To VPB RED _CATHODE 8 J83 9 RED _GRID1 J67 RED _GRID2 10 To RED From 7 JRED_VIDEO RED _HEAT 6 crt VPB 4 GRN_VIDEO RED _HEAT 7 6 BLU_VIDEO ARC GND 3 J68 From VPB 23 RESTORE J68 From RTG BLANKING GRN_BEAM____ f4 ro VPB From HVPS StSUPPLY From VPB J85 GRN _ ATHODE ls VIDEO AMPLIFIER ed ta BOARD From VPB Po J69 BLU_BEAM 16 To VPB E G2 SUPPLY gm dial BLU_cATHODE 8 J87 BLU_GRID1 J68 BLU_GRID2 10 pe From HVDB fio IsweEP_0K in HEAT s ARC_GND 3 80V es es i NA_OK 13 To VPB arc_GND _ J84 1 to J86 1 HVPS J88 1 Figure 2 11 Video Amplifier PCB Block Diagram CRT interface for Focus heater voltages and ARC ground The three CRT sockets are part of the VAB They provide the necessary interface for the input of the three CRTs The Focus voltage for each color is connected directly to the socket of each CRT The VAB provides ARC grounds for each CRT which are used to protect against arcing of the CRT anode supply IIC Interface The VAB does not use the IIC interface All adjustments are accomplished by the control lines coming from the Video Processor Board The Video Amplifier Board I O This section provides a description of the inputs to and outputs from the VAB The I O descriptions are arranged by the source destination of the signal The assembly communicated with is used as the primary heading of each group of signals Those signals are subdivi
7. biases to maximum for all 3 colors With all 3 colors at maximum the image on the screen should be a white screen with some colors at the edges Observe the right left top and bottom of the screen Normally green is the reference to which blue and red will be matched NOTE If the green ILA was replaced the blue or red image should be used as the reference to which green is matched If a red or blue border is present on either side or at the top or bottom the ILA overlap needs adjustment If both red and blue overlap the border will be yellow In either case proceed with the adjustment below If there is no overlap reset the ILA biases to their previous levels from Step 2 To perform an ILA Overlap adjustment Remove the rear cover Section 4 2 and tilt the electronic module up Sections 3 3 1 2 Continue with all three colors hidden Loosen the 2 wing nuts at the top of the ILA assembly to be adjusted Figure 4 12 If the overlap is at the left or right grasp the ILA assembly and slide it to the right or left so that the edges coincide with the edges of the other two ILA assemblies CAUTION To avoid Model 200 Service Manual 5 6 7 8 Chapter 3 Service Adjustments damaging the connector grasp the ILA assembly itself not the connector at the top If the overlap is at the top or bottom be sure the projector is level then slide the spring clip Figure 4 12 at the top of the ILA a
8. of the Projection Lens 4 Rotate the Projection Lens left or right so that the notch on the lens clears the locking screw on the lens holder Figure 4 12 Carefully slide the lens out Notch may be above or below the holding screw depending on how lens was installed Figure 4 13 Projection Lens locking screw and removal notch WARNING If the locking screw is in line with the notch shown the lens can fall out if the projector is pointed downward 5 Replace the Projection Lens in reverse order NOTE The same basic procedure above is used to install or remove optional fixed lenses 420 Model 200 Service Manual Chapter 4 Maintenance Removal Replacement NOTE When changing from a zoom to a fixed lens or vice versa the ILA Back Focus Section 3 4 may need readjustment 4 18 Prism Assembly o CAUTION The removal of the Prism Assembly requires removing the Dichroic Mirror Assembly X Plate In most cases this necessitates an optical realignment HJT does not recommend performing this replacement in the field Optical alignment is critical and requires projector power to be on This results in an additional safety hazard due to the high intensity light beam emanating from the optical area with the optical cover off If removal and replacement is absolutely necessary proceed with extreme caution and wear safety glasses The Prism Assembly requires the removal of more components and assemblies than any
9. passes through the prism resulting in a white screen The modulated high intensity light is reflected back out of the output side of the ILA assembly through the Prism and the Projection Lens and onto the screen see Figure 2 19 Light from Image Light Arc Lamp Amplifier Zoom Projection Lens Prisms Figure 2 19 Simplified image optical path 2 64 Model 200 Service Manual Chapter 2 System Description Model 200 Service Manual 2 65 Chapter 3 Service Adjustments 3 0 Service Adjustments Contents 3 1 Are Lamp Focus and AllgnMeM cccciconicnicinncasciaia taciones 3 1 3 2 Arc Lamp Current Sendai 3 4 3 3 Electronic Module Tilt Up cece cece eeeeceeeeeeeeeeeeeeeeeeeeeeeeees 3 5 34 ILA Back A i aiaei n aaa 3 5 3 5 CRT Mechanical FOCUS sobria ii di ld ideas 3 7 3 0 CRT Rotation israele 3 9 3 7 CRI Electroni POLIS tc iio 3 10 3 8 ILA OVEMAD PROPER CO ae 3 10 3 9 UIMP Settings si eil 3 11 3 9 1 Front Rear Jumper Settings ccccccccessssceceeeneeeeteeeeenenneneeeeeeees 3 11 3 9 2 Inverted Vertical Jumper Settings 3 12 3 10 Vertical and Horizontal Size Settings 3 12 3 11 Software AA 3 14 3 12 Cleaning Lens ILA assemblies and Mirrors cccccceccseecsseeeeseeeeeeeeeas 3 16 This chapter details adjustment procedures required to maintain the Model 200 Refer to Figures 4 1 and 4 11 to locate assemblies and components Fora complete list of tools
10. 2 2 Remove the High Voltage Power Supply cover Figure 4 5 by removing the 2 pozidrive screws that secure the HVPS at the top of the cover and loosening the 1 pozidrive screw at the bottom of the front flap Do not remove this bottom screw it is difficult to reinstall The HVPS will slide up and over it hi Figure 4 5 High Voltage Power Supply cover Figure 4 6 High Voltage Power Supply 3 Carefully slide the cover upward and outward to remove it Model 200 Service Manual 4 9 Chapter 4 Maintenance Removal Replacement NOTE For the remainder of this procedure refer to Figure 10 11 12 13 14 15 16 17 4 6 above Disconnect the 3 CRT anode cables Disconnect P44 G2 Out at the middle front of the HVPS Unsnap the cable clamp at the top of the HVPS Remove the anode cables and the P44 cable from the cable clamp Disconnect P45 Control at upper left of HVPS Disconnect and label the 3 Focus cables The square tabs on these cables see Figure 4 6 may have to be lifted up by gently prying with a flathead screwdriver Remove all cables from the slot in the cable guide at the left side of the HVPS Verify that all plugs and cables are removed and out of the way so the HVPS is free to be removed Loosen do not remove the 2 pozidrive screws at the bottom of the HVPS that secure the HVPS metal housing to the projector Remove the 2 pozidrive screws that hold the
11. 2 10 and 2 11 provide information to allow the technician to perform module level troubleshooting The following functions are provided by RTG board e Internal sync generation e Sync detection and selection e Serration and equalization pulse removal e Phase locked loop e Blanking pulse generation e Horizontal and vertical phase adjustments e Interlace detection and odd field pulse generation e Horizontal frequency band selection e Horizontal line count and vertical count generation e IIC interface e Video clamp pulse generation e Source change detection e HVPS sync generation e Horizontal deflection enable circuitry The RTG I O Diagram Figure 2 13 and the list of inputs and outputs Tables 2 7 and 2 8 provide information for the technician to perform module level troubleshooting Horizontal frequency band selection and LED logic The RTG produces a voltage that is proportional to the horizontal frequency which is used by the Horiz Vert Deflection board System Controller Board and the phase locked loop PLL section of the RTG board This DC voltage is used to create the following frequency bands Band A from 15 KHZ to 24 5 KHZ Band B from 24 KHZ to 29 5 KHZ Band C from 29 KHZ to 56 KHZ Band D from 55 5 KHZ to 90 KHZ These bands are outputted through the IIC interface to be used by the System Controller Board These lines are also outputs of the RTG board through the Backplane Board The Model 200 Service
12. 200 Service Manual 2 5 Chapter 2 System Description Figure 2 1 Optical System Block Diagram _ Image ali a CRT Relay __ LA Polarizing i Lens Prism Blue Video Signal Path S Va Rae Zoom Relay Green Combining gt projection gt CRT gt ILA Polarizing pris e sala Prism Lens e H 7 n Green Video Signal Path 4 Red le CRT gt Relay gt ILA Polarizing lt pA Lens Prism J _ Image Mirror Red Video Signal Path High Intensity Red Light Condensing pene Prepolarizer K Si ean sa Prism Red x O ichroic ignitor Are gt Mirror UVFilter Mirror Prepolarizer To Green Lamp IR Filter Assembly Prism Green Prepolarizer To Blue polarizing prism Prism Blue 2 6 Model 200 Service Manual Chapter 2 System Description 2 3 Electronics System 2 3 1 General Description IGNITER The Model 200 Electronics System includes nine printed circuit assemblies They provide all the controlling voltages and signals to adjust and correct picture settings geometry convergence and shading see Chapter 4 of the User s Guide The Electronics System also controls video and sync input signals LED displays on PCBs at the rear and side of the projector two RS 232 communications ports and two IR receivers for remote c
13. 4 13 Scan Reversal PCB i liane 4 16 4 14 CRTNYoke ASEM Vi sen as ase tel wile ala sah Monta natiaten a 4 16 4 15 IA Assemblati ani 4 18 4 16 Relay Lens aaa 4 19 AT Projection Lens dira 4 20 ANO PAST ASS OM ico ira ai 4 21 4 1 Introduction NOTE Before removing the front or rear cover or replacing any components or subassemblies please review the Safety Chapter at the front of this manual Removal and replacement procedures in this chapter must be performed by Hughes JVC certified technicians and engineers only e Tools required to perform removal and replacement of projector components and subassemblies are listed in Chapter 1 Introduction Model 200 Service Manual 4 1 Chapter 4 Maintenance Removal Replacement 4 2 IB f WARNING Various procedures in this chapter involve the removal and replacement of system subassemblies Ensure that the circuit breaker on the rear panel of the projector is turned off and the AC power plug is removed from the AC outlet PRIOR to attempting any of these procedures When performing any maintenance procedures in this chapter follow the guidelines below Left Right Orientation When left and right is mentioned in this chapter it is with reference to standing at the rear of the projector facing the screen Connectors on subassemblies and PCBs have tabs that must be released first before pulling on the connector The proper procedure is to push slightly N
14. Bandwidth Chrominance Cold Mirror CRT Cathode Ray Tube Dichroic Mirrors Field Frame Model 200 Service Manual Glossary Without definite form not crystallized The xenon arc lamp in the Model 200 projector It operates at high temperatures 160 to 200 and produces dangerously intensive light with hazardous levels of ultraviolet and infrared radiation The ratio of the picture width to picture height The standard U S television aspect ratio is four units wide to three units high 4 3 High Definition Television HDTV is 16 9 The transmission or reception capacity of a computer or communications channel measured in bits per second in digital and in Hertz in communications Bandwidth is the difference between the lowest and highest frequencies transmitted or received Wider bandwidth provides more information or picture detail capability Abbreviated as C Color information signal or signals Mirror that absorbs infrared light so that its reflection contains only cold light that does not transmit appreciable heat As a result of this absorption of infrared heat radiation cold mirrors get quite hot The vacuum tube used as a display screen in video terminals or television sets Commonly called the picture tube The white light of the xenon arc lamp is separated into red green and blue by means of dichroic mirrors which reflect only one color and pass all others One half of a complete vid
15. H_ COUNT The number of horizontal lines associated with BON iia 1 a A ME ES ARA MA A po A ESAS RTG_OK A low on this line indicates an operational RTG board o 2 Oe 1 oe MER NA 1 Raster Timing Generator Input Output This section describes the inputs to and outputs from the RTG board The I O descriptions are arranged by the source and destination of the signal The assembly communicated with is used as the primary heading of each output Input refers to an input to the RTG output refers to an output from the RTG Table 2 11 Raster Timing Generator I O signals System Controller Board INPUTS DESCRIPTION ISYNC_CLK 5 mHz clock used to generate the internal sync signals IIC_CLK IIC clock line Unidirectional clock line for control of synchronous data transfer over the IIC bus interface IIC_DATA IIC data line Bi directional serial line for synchronous data transfer between system control board and RTG board OUTPUTS DESCRIPTION INIC_INT IIC interrupt line This is not used by the RTG board SOURCE_ This signal indicates a new source or valid A high indicates a valid VALID stable signal and low indicates change in input signal ODD_FIELD Square wave with 50 duty cycle which is low during the odd field of an interlace signal This signal is high for noninterlaced signals 280_CLK Square wave signal 50 duty cycle 280 times the frequency of horizontal sync This clock is synchronized to the
16. Lamp DC INPUT terminals J74 Figure 3 3 3 Turn projector power on DC OUTPUT SIGNAL NAME GROUND LAMP LIT LAMP OK LAMP ENA ICOVER ON ILAMP OK GND ILAMP OUT LAMP RTN AIC INPUT CONN SIGNAL NAME J71 1 LINE J71 3 EARTH J71 5 NEUTRAL Figure 3 3 Arc Lamp Power Supply connections 4 Place another DVM set to read at least 200 millivolts dc across the test points inside the small rectangular aperture near the upper left of the Arc Lamp Power Supply cover see Figure 3 4 NOTE This test point reads millivolts across a shunt that has been selected so that a 1 millivolt reading on the DVM is equal to 1 amp of Arc Lamp current Model 200 Service Manual Place the second DVM from Step 3 across these terminals Chapter 3 Service Adjustments Adjust the Arc Lamp current a with this pot Figure 3 4 Arc Lamp Power Supply aperture Multiply the results from Step 2 and Step 3 together Bear in mind that the millivolt reading from Step 3 should be interpreted as amps i e 1millivolt 1 amp The resulting power from Step 4 should equal 750 watts If the result is not 750 watts adjust the trimmer pot refer to Figure 3 4 CW increase CCW decrease If increasing notice that the Arc Lamp voltage from
17. Manual Chapter 2 System Description Horizontal Vertical Deflection Board uses these lines for proper selection of retrace times V_SYNC J1 3 FROM H_ SYNC SOURCE_VALID VPB G_SYNC TO ODD_FIELD GRN_INPUT SCB 280_CLK CLAMP TO FROM ISYNC_CLK BLANKING VPB sl pa RASTER H_BANDO TIMING H_BANDI GENERATOR BANDA TO H_ENABLE HVDB H_F2V H_DRIVE 5 1V_STBY GND FROM 5 1V LVPS 5 1V HVPS_SYNC TO HVPS 15V 15V V_DRIVE TO 145V CDB 15V Figure 2 13 Raster Timing Generator Input Output Diagram There are 9 LEDs on the RTG board see Figure 5 2 that indicate frequency bands input modes and lock mode of the phase locked loop IIC Interface The RTG board uses the IIC bus interface for serial communication with the System Controller Board The information transferred over the IIC bus is indicated below I input to RTG O output from RTG The RTG board does not use the interrupt line of IIC bus interface Table 2 10 Raster Timing Generator IIC communication A ae O FORCE_INTERNAL Selects internal syncs 1 Selects the tri level mode for the video clamp paa signal for HDTV SYNC_TIP Selects the Sync tip option of video clamp signal VTR_MODE Selects VTR mode of operation I 9 Right blanking Data for adjustment of right blanking Model 200 Service Manual 2 41 Chapter 2 System Description ee Frequency bands The frequency band associated with the current signal 3 12
18. O Output from the VPB Table 2 6 Video Processor IIC communication o information pescao i RED_CONT Red Contrast level a i GRN_CONT Green Contrast level R BLU_CONT Blue Contrast level i BRIGHTNESS Brightness level BEAM CURRENT Model 200 Service Manual 2 25 Chapter 2 System Description Tra Red G2 Contro GRN_G2 Green G2 Control BLU_G2 Blue G2 Control WHT_BOOST Gamma correction BLK_BOOST Gamma correction G1_BIAS G1 bias level NA_OK Issues to SCB that Video Amplifier is OK BEAM_CURRENT Beam current control OK_DETECT Issues to SCB that VPB is OK Video Processor I O This section provides a comprehensive description of the inputs to and outputs from the VPB The I O descriptions in Table 2 7 are arranged by the source destination of the signal The format used is such that the assembly communicated with is used as the primary heading of each group of signals Those signals are further subdivided into inputs and outputs Inputs refers to an input to the VPB while output refers to an output from the VPB Table 2 7 Video Processor I O signals System Controller Board RED_SENS Sensitivity correction information for red Real time data at 0 volt to 1 volt GRN_SENS Similar to RED_SENS BLU_SENS Similar to RED_SENS RED_THRES Threshold correction information for red Real time data at 0 Volt to 1 Volt 2 26 Model 200 Service Manual Chapter 2 System Description GRN_THRES S
19. Power Supply LVPS LV_ENA LV_OK 24v Fans 5 1v 6 2v 15V 15v 80V COVER_ON FAN_ENA Figure 2 3 LVPS Input Output Diagram Main Functions e Provide all the low voltages needed by the projector e Provide standby power when the projector is OFF e Provide power for all cooling fans Inputs The Low Voltage Power Supply receives AC input power directly from the power source The input range is from 100 VAC to 240 VAC at 50 or 60 Hz LV_ENA Enabling signal from the System Controller Enables the LVPS when the System Controller receives a Power On command FAN_ENA From System Controller Enables the 24v standby voltage for the projector fans COVER_ON Cover interlock signal Indicates both covers in place Enables the non standby outputs Outputs 5 1VDC Main 5 1VDC Standby 6 2VDC 15VDC Model 200 Service Manual Chapter 2 System Description 24VDC 80VDC LV_OK When LV ENA is enabled this diagnostic signal indicates to the System Controller the status of the non standby supply all outputs working or not working Operation The main power is filtered via the input filter to prevent radiation from escaping back to the power line From the line filter AC power is fed into the Low Voltage Power Supply module where AC is rectified filtered and compensated for power factor correction The 5 1V Standby is on whenever AC power is connected to the projector and the circu
20. Reg Enable box back to On 10 Reset Bow Pincushion Keystone and Skew select proper color for Skew to the values noted previously in Step 4 11 Recheck Bow Pincushion Keystone and Skew and readjust if necessary Also recheck Convergence refer to the Model 200 User s Guide 12 Repeat the above procedure for any other CRT that is not level 3 7 CRT Electronic Focus The Electronic Focus is factory set and will not normally need to be adjusted except after component replacement maintenance or if wide temperature variations exist between the factory and the field location View one color at a time 1 Select the Focus test pattern 2 Zoom the Projection Lens to the widest angle and adjust the Projection Lens focus for the sharpest image 3 View Green Hide Red and Blue 4 Adjust the Green Electronic Focus Figure 3 6 for a sharp focus of the H pattern at the center of the screen 5 Repeat the above steps for Red and Blue Model 200 Service Manual 3 9 Chapter 3 Service Adjustments Figure 3 6 RGB Electronic Focus adjustments 3 8 ILA Overlap This adjustment positions the ILA assemblies in their sockets Adjustment should only be made once or whenever an ILA is replaced To determine if this adjustment is necessary 1 Note the value of the ILA bias for Red Green and Blue so they can be returned to these levels when this procedure is complete Hide all three colors Increase the ILA
21. Step 2 may decrease slightly Adjust the trimmer pot until power is 750 watts CAUTION Do not adjust beyond 775 watts or damage to the equipment may occur 3 3 Electronic Module Tilt up 1 2 4 Remove the rear cover Section 4 2 Release the clasp on the left side of the electronic module turn CCW and pull out Pull out the release pin on the rear right side of the electronic module to tilt it up Tilt the electronic module up to a vertical position Ensure the holding pin locks the electronic module in place 3 4 ILA Back Focus The ILA Back Focus adjustment moves the ILA Relay Lens CRT assemblies together to adjust the focal length This adjustment allows the zoom lens tracking to remain focused throughout the entire range Use Focus test pattern to perform this adjustment for each color This procedure performs the Green ILA Back Focus For best results perform ILA Back Focus with 2 people One person will watch the screen close up and the other will move the ILA Relay Lens CRT assemblies back and forth The adjustment is factory set but may need some touch up in the field To adjust the ILA Back Focus 1 Remove the rear cover Section 4 2 2 Tilt the Electronic Module up Section 3 3 3 For this procedure view Green Hide Red and Blue Model 200 Service Manual 3 5 Chapter 3 Service Adjustments Select the Focus test pattern Select Projection Lens from the menu Use the up down
22. Test Pattern 5 X hatch 2 Hide Blue View Red and Green 3 If Red is outside of Green on both sides or inside of Green on both sides use a Delrin 100 hex alignment tool to adjust the Red horizontal size coil to correct the error If Red is outside of Green on one side and inside of Green on the other side this is most likely caused by Red not being centered correctly and can be corrected with the centering adjustment User s Guide Section 5 5 11 If the Red horizontal size coil does not completely eliminate the size error between Red and Green balance the error on both sides to allow for easier convergence Repeat Steps 2 and 3 above for Blue while hiding Red Recheck all Geometry and Convergence settings and readjust wherever necessary 6 Replace the electronic module and rear cover 3 11 Software Updating The projector s software resides in Flash Memory and is updated via the projector s serial Port A To perform an update a disk containing the updated Boot Software boot hex and or System Software zsys hex and a PC with Windows 3 1 avoid Windows 95 at this time is required to perform update Boot Manager Software and System Software are separate products Each may be updated independently The System Software will depend on a specific version of the Boot Manager Refer to the System Software release bulletin for Boot Manager version dependencies To perform software upgrade 1 Verify that the projector cir
23. arrow keys to zoom the Projection Lens to full telephoto position smallest image NOTE Skip this step when 10 11 12 13 14 using an optional fixed lens Use left and right arrow keys to focus the projection lens to get sharply focused spacer balls NOTE 1 Spacer balls are used inside the ILA Assembly to separate the layers They are tiny random irregularly shaped spots that are visible throughout the image Look directly in front of the screen in the lighter areas of the image to view From throw distances shorter than 4 meters spacer balls are difficult to see Zoom the lens to a wide angle position largest image NOTE Skip this step when using an optional fixed lens Put on safety gloves see Safety section for gloves type then loosen the wing nut on the Green Relay Lens or whichever lens is being focused NOTE If the ILA Relay Lens CRT assembly cannot be moved close enough to get a good spacer ball focus loosen the CRT Lens Stopper Ring in front of the CRT Holder Ring Figure 3 5 Move the CRT snug against the collar to get additional range and then retighten the collar Loosen the 2 hex bolts Figure 4 12 on the ILA assembly in front of the Relay Lens Slide the Relay Lens CRT ILA assembly forward or backward until the sharpest spacer ball focus is achieved NOTE Do not use the zoom lens focus while performing this step Repeat Steps 6 11 until the spacer balls stay in focus through
24. between boards where one board may cause others to perform protection functions Input A high signal at HV_ENA shuts off the HVPS Model 200 Service Manual 2 13 Chapter 2 System Description 2 3 3 Video Input Cards The four types of Video Input Cards that can be used with the Model 200 Projector are e Standard RGB Video Input Card which is supplied with each projector and is used for RGB standard formats e Optional Four Input RGB VIC used in a similar manner as a switcher e Optional HDTV VIC used for High Definition Television e Optional Quad Standard Decoder VIC used for NTSC PAL SECAM and other composite sources Standard RGB Video Input Card RGB_VIC The RGB Video Input Card RGB_VIC is located on the back side of the projector It has five BNC input connectors It provides the RGB and sync interface for the Model 200 projector The following functions are provided by the RGB VIC e Video and sync interface for red green and blue e LED indication e IIC serial bus interface RED GREEN BLUE HORIZ VERT IIC_CLK IIC_DATA IIC_INT A16 5 1Vstby S Pin callouts are to P12 P14 or P18 5 1V depending on which VIC slot is used 15V B15 B14 15V Figure 2 6 Standard RGB VIC I O Video and sync interface for red green and blue The RGB VIC provides a high bandwidth interface for the three color video signals The video signals are routed to the Backplane Board without any distortio
25. connectors Relay Lens The relay lens picks up the image from the face of the CRT and focuses the image to the ILA assembly Image Light Amplifier ILA Assembly The CRT image is received from the relay lens onto the input side of the ILA assembly The input and output sides of the ILA assembly are isolated from each other electrically and optically but are coupled electrostatically At the same time as the image is received at the input side of the ILA assembly the output side of the ILA assembly is receiving high intensity light from the arc lamp through the prism This high intensity light is modulated changing its polarization by the signal on the input side of the ILA assembly The light is then reflected back from the output side of the ILA assembly then travels through the prism to be picked up by the projection lens NOTE The prism reflects horizontally polarized light and passes vertically polarized light Light from the arc lamp is polarized horizontally and reflects from the prism into the ILA assembly then back out again after being modulated by the image signal into vertically polarized light The vertically polarized light then passes through the prism to the projector lens In this manner the ILA assembly combines the image from the CRT with the high intensity light from the arc lamp Thus the maximum brightness of the screen image is not dependent on the brightness of the CRT but on the light from th
26. horizontal sync 2 42 Model 200 Service Manual Chapter 2 System Description Video Processor Board INPUTS DESCRIPTION V_SYNC Input vertical sync H_ SYNC Input horizontal or composite sync G_SYNC Sync on green signal which is stripped for the green video GRN_INPUT Buffered version of green video OUTPUTS DESCRIPTION Clamp A negative going video clamp signal with about 3 duty cycle Blanking Blanking signal composed of right left top and bottom blanking Horizontal Vertical Deflection Board INPUTS DESCRIPTION Not used by the RTG board FLYBACK OUTPUTS DESCRIPTION H_BANDO Horizontal frequency band lines H_BAND1 Band A 000 Band B 001 Band C 011 and band D 111 H_BAND2 H_ENABLE Low enabled deflection and high disabled deflection H_F2V A DC voltage proportional to horizontal frequency H_DRIVE Square wave 50 duty cycle synchronized to the selected horizontal sync High Voltage Power Supply OUTPUT HVPS Synchronization pulse for HVPS synchronized with the selected SYNC horiz sync at either same half or one third the frequency ConvergenceDeflection Board OUTPUT DESCRIPTION V_DRIVE Square wave negative going pulse synchronized to the selected vertical sync with pulse width of about 4 horizontal periods Model 200 Service Manual 2 43 Chapter 2 System Description Low Voltage Power Supply INPUTS DESCRIPTION 5V Power for digital portion of RTG board Power for the phase l
27. in front one in back These windows receive projector control signals from the I R remotes The housing that contains the Ignitor the Laser Power Supply and the Arc Lamp assembly Provides boost voltage through a spark gap to the Ignitor A unit of measure of the flow or rate of emission of light An ordinary wax candle generates 13 lumens while a 100 watt bulb generates 1 200 lumens Model 200 Service Manual Luminance Noise Overscanning Raster Resolution Retrace RGB Red Green Blue Rollbar Assembly S VHS S Video Model 200 Service Manual Glossary Abbreviated as Y The portion of the signal that contains the black and white information which affects brightness An undesirable electrical interference of a signal Displaying less than the complete area of an image to a viewer i e scanning beyond the visible area All TV sets are overscanned at least slightly so that viewers do not see blanking The area illuminated by the scan lines on a CRT The degree of sharpness of a displayed or printed character or image the amount of detail in a picture On a display screen resolution is expressed as the number of horizontal dots columns by the number of vertical lines rows For example a 680 x 400 resolution means 680 dots across each of 400 lines The blanked out line traced by the scanning beam of a picture tube as it travels from the end of any horizontal line to the beginning
28. line a Model 200 Menu When the projector detects the successful end of the transfer the following screen is displayed Import Configuration IMPORT COMPLETE New Configuration is active Model 200 Service Manual A 3 Import Export A 4 Press ESC to Continue Press ESC to exit the projector Import operation and return to the Maintenance Menu There is a 10 second pause before the screen is redrawn USER ABORT Windows TERMINAL FIRST press STOP to end the Host Upload transfer Model 200 Menu THEN press ESC to abort the projector Import operation Import Failed IMPORT ABORTED BY USER Old Data was Restored STOP Host SEND DATA THEN Press ESC FINALLY press ESC to exit the projector Import operation and return to the Maintenance Menu There is a 10 second pause before the screen is redrawn DATA TRANSFER ERROR Example Model 200 Menu will display Import Failed Bad EXPORT File Format Old Data was Restored gt STOP Host SEND DATA gt THEN Press ESC 9 1 Windows TERMINAL FIRST press STOP to end the Host Upload transfer 9 2 Model 200 Menu THEN press ESC to exit the projector Import operation and return to the Maintenance Menu There isa 10 second pause before the screen is redrawn Model 200 Service Manual Glossary Of Terms Amorphous Arc Lamp Aspect Ratio
29. linearity adjustments individually for all three colors e Vertical raster centering for all three colors e IIC interface IIC Interface All adjustments for the HVD board are performed by the System Controller via the IIC serial bus interface This three wire bus interface consists of a clock line a data line and an interrupt line The HVD board does not create any interrupt and the interrupt line is not used for this application Table 2 10 lists the adjustments executed via the IIC bus interface I Input to HVD board O Output from HVD board Model 200 Service Manual 2 45 Chapter 2 System Description T I l 1 T i Figure 2 14 Horizontal Vertical Deflection PCB I O Diagram Table 2 da Horizontal Vertical Deflection IIC Data Interface Input EN Information Description pe v RED_LIN_CONTROL Data for adjustment of red vertical linearity ae V_GRN_LIN_CONTROL oe adjustment of green vertical V BLU LIN CONTROL Data for adjustment of blue vertical a linearity 2 46 Model 200 Service Manual Chapter 2 System Description V_RED_EDGE CONTROL i adjustment of red vertical edge ten V_GRN_EDGE CONTROL Data for adjustment of green vertical edge linearity re V_BLU_EDGE_CONTROL Fini adjustment of blue vertical edge sE L R_KEY_CONTROL Data for adjustment of left right keystone correction ra teo L R_PIN_CONTROL Data for adjustment of left right pincushion correction 1 8 WIDTH_CONTROL WIDTH_C
30. refresh a CRT based video screen One of many horizontal lines in a graphics frame The frequency of line scanning for a monitor or projector Also called sync for short Working together At the same time horizontal and vertical sync signals from the signal source control the monitor s scan circuits to properly time the lines and frames of a picture Remote control used during Series 200 setup and adjustment Alternative to Standard Remote Provides access to many of the setup functions by direct keys instead of by menu maneuvering Distance to the screen from the projector Decrease raster size H and V so that all four edges of the picture are visible on the display Potentiometers located on the Horizontal Vertical Deflection Board Used to adjust Vertical height The amount of detail that can be perceived in the vertical direction the maximum number of alternating white and black horizontal lines that can be counted from the top of the picture to the bottom The vertical scan frequency of the input signal Reverses the image vertically for use with ceiling displays or mirror bounced displays Located on the Scan Reversal Board The number of times per second a frame is transmitted to a video display screen See Arc Lamp Model 200 Service Manual Glossary Model 200 Service Manual B 5
31. required to perform adjustments refer to Chapter 1 CAUTION Before performing procedures in this chapter review the chapter on Safety at the beginning of this manual AN MN WARNING when performing procedures in this chapter that require the projector covers to be removed wear high voltage gloves ANSI ASTM 10 000 volt rated when working near the CRTs Arc Lamp or power supplies Wear safety goggles rated X5 when working anywhere near the light path from the arc lamp or the projection lens 3 1 Arc Lamp Focus and Alignment The Arc Lamp must be refocused and the XY axes realigned whenever an Arc Lamp is replaced The Arc Lamp can also become defocused or misaligned from physical shock to the projector 1 Select and view Red Green and Blue 2 Select Test Pattern 4 Flat Field Model 200 Service Manual 3 1 Chapter 3 Service Adjustments wo Xx Use the right left arrow keys on the remote control and adjust the Flat Field to 0 From the System menu select Maintenance then select 3 ILA Bias Record the ILA Bias current value the Green bias will be readable This bias value will be returned to when this procedure is complete The Green value only need be recorded because Red and Blue returns to their original values when Green is reset Use the right arrow key to increase the ILA Bias so the Flat Field turns white If the screen begins to turn from white to a yellow tinge use the left arrow and adjust
32. so that the mounting screws clear the access holes Then lift the side of the board that is nearest the front of the projector first and angle it upward so that the side closest to the rear clears the lip of the electronic module frame Be careful when removing or reinstalling the board to avoid gouging it on the fan screws or cable clamps 5 Reinstall the HV Deflection PCB by lowering the side that is nearest to the rear of the projector in first until it clears the electronic module edge then lowering the other side Carefully fit the board over the mounting screws and slide the board into position Tighten the screws and reconnect the connectors Figure 4 8 Horizontal Vertical Deflection PCB 4 11 Video Input Cards VICs The 4 types of Video Input Cards RGB Standard 4X RGB Mux 4 RGB Input Quad Decoder and HDTV YPbPr are all removed and inserted in the same manner To remove a VIC 1 Disconnect all video input connections from the VIC to be removed Model 200 Service Manual 4 13 Chapter 4 Maintenance Removal Replacement 4 14 Remove the 2 flathead screws that secure the VIC to the projector rear panel Grasp the VIC connector bracket and pull the VIC out Wiggle the VIC a little if necessary to extract it 4 12 Video Amplifier PCB The Video Amplifier PCB for the 3 CRTs is located under the Electronic Module on the bottom frame of the projector behind and under the CRT assemblies To remove a Vi
33. the bias back until an all white flat field is observed The flat field screen must be white to properly perform the arc lamp focus and alignment Loosen the large flathead screw Y turn CCW at the bottom of the Arc Lamp cover Figure 4 2 and lift the cover Defocus the Arc Lamp by turning the Focus Adjust Screw see Figure 3 1 until a bright circular area see Figure 3 2 is achieved This is the Arc Lamp s hot spot The sides top and bottom areas will taper off in brightness When performing defocus do not attempt to narrow the circle too much try to obtain a uniform circular area e 2 Figure 3 1 Arc Lamp Focus adjustments 8 Loosen the 4 X axis horizontal alignment screws indicated by the letter H inside the screw heads in Figure 3 1 Model 200 Service Manual Chapter 3 Service Adjustments Arc Lamp Hot Spot should be in center Figure 3 2 Arc Lamp Hot Spot whitest area is off center vertically and horizontally Adjust to center the hot spot 9 Insert a flathead screwdriver into one of the horizontal alignment slots shown in Figure 3 1 and pry back and forth to slide the plate Center the hot spot horizontally 10 Tighten the 4 horizontal alignment screws 11 Loosen the 2 vertical alignment screws indicated by the letter V inside the screw heads in Figure 3 1 12 Use a flathead screwdriver in the vertical alignment slots shown in Figure 3 1 to pry the v
34. top of the HVPS metal housing to the projector frame Grasp the HVPS at the bottom and lift upward and outward so that it slides away from the bottom screws Reinstall the HVPS in the reverse order from above When reinstalling be sure that the HVPS slides over the bottom screws and the lip at the top of the projector frame Make sure each anode cable snaps back into its receptacle The receptacles are about 2 inside the hole where the cable fits into Also be sure the rear flap on each focus cable connector snaps over the square socket securely wiggle the connector a little to make it fit over Replace the HVPS cover After the HVPS is replaced recheck CRT Mech Focus Yoke Alignment G2 and Electronic Focus Replace the projector covers 4 8 Raster Timing System Controller Video Processor PCBs All electrical connections to the Raster Timing Generator System Controller and Video Processor boards are routed through the backplane board There are no connectors to remove Model 200 Service Manual Chapter 4 Maintenance Removal Replacement To remove the Raster Timing Generator Video Processor or System Controller PCBs 1 Turn off power at the remote control and at the circuit breaker on the projector rear panel 2 Remove the projector rear cover For the Raster Timing Generator and Video Processor PCBs grasp the card extractor tabs at both ends of the boards and pull out To remove the System Contr
35. 0 Service Manual 3 15 Chapter 3 Service Adjustments 12 3 16 11C During upload a progress indicator updates the number of records received At the completion of the upload the system will display the following numerical values are for example only and depend on the Boot Manager version S Records processed 823 Upload Successful Address Range 0x00000000 0x00006687 Bytes Loaded 26248 WARNING FLASH WILL NOW BE UPDATED mn Press Enter to continue Esc to abort 11D The system has verified that the load module is correct and is ready to update the Flash Press Enter to perform the update press Esc now to abort the update with no changes While the Flash memory is being updated 15 30 seconds DO NOT turn off the projector circuit breaker or the machine could be made unbootable requiring a new set of flash chips to be installed When the update is complete the system will display the following Reprogramming Flash Sector 0 1 Boot Manager software update successful Command _ The Boot software has been successfully updated To restart the projector under control of the updated boot manager enter the reboot command while depressing the service mode switch Figure 5 1 The projector will now restart with the updated boot manager software You should see the following displayed where y y 0 is the updated Boot Manager s version Boot Manager Ver y y 0 Servi
36. BLU_VIC 2 Similar to RED_VIC 1 RED_VIC 3 Similar to RED_VIC 1 GRN_VIC 3 Similar to RED_VIC 1 BLU_VIC 3 Similar to RED_VIC 1 H_VIC 1 Horizontal sync signal input from video input card 1 H_VIC 2 Similar to H_VIC 1 H_VIC 3 Similar to H_VIC 1 V_VIC 1 Vertical sync signal input from video input card 1 V_VIC 2 Similar to V_VIC 1 V_VIC 3 Similar to V_VIC 1 2 28 Model 200 Service Manual Chapter 2 System Description SEL_VIC 1 Input signal from RGB VIC board which is used to select input video source from VIC 1 SEL_VIC 2 Similar to SEL_VIC 1 SEL_VIC 3 Similar to SEL_VIC 1 Low Voltage Power Supply INPUTS DESCRIPTION 5 1 volts Power supply to digital components 15 Volts Power supply to analog components 15 Volts Power supply to analog components Model 200 Service Manual 2 29 2 30 Chapter 2 System Description 2 3 5 Video Amplifier The Video Amplifier Board VAB is located at the back side of the projector under the necks of the three CRTs It contains three separate video amplifiers one each for red green and blue The outputs from these video amplifiers connect directly to the CRTs and provide all electrical connections to the CRTS except for the anode voltages The following functions are provided by VAB e Amplification of video signals and driving the cathode of all three CRTs e Sensing the cathode beam current for all three CRTs e G1 regulator for all three C
37. D1 RED_HEAT Positive side of the heater voltage for CRTs About 6 2 V GRN_HEAT BLU_HEAT RED_HEAT Negative side return line of the heater voltage for CRTs Ground GRN_HEAT level BLU_HEAT RED_ Video output signals of the VAB about 40 VPP with peak voltage of oe about 70 V GRN_ CATHODE BLU_ CATHODE RED_GRID2 G2 screen supply of CRTs about 600 to 800 V GRN_GRID2 BLU_GRID2 OUTPUTS DESCRIPTION Ground of CRTs anode supply return line System Power Supply INPUTS DESCRIPTION Interlocks and protection None Model 200 Service Manual 2 33 2 34 Chapter 2 System Description 2 3 6 System Controller PCB The System Controller Board SCB is located in the electronic card cage Figure 5 1 The Electronics System is controlled by the SCB The SCB uses digital and analog circuits to direct the operation of image and raster generation circuits and to control the input output of power supply operation The SCB sets the operating parameters of the image such as brightness and contrast It also produces internal test patterns and generates on screen display overlays The SCB sets the timing for the raster generation to adjust phase geometric corrections shading corrections and convergence The program memory and the memory for all convergence and shading maps are located on the SCB The following functions are performed or controlled by the System Controller e Enables control for the Low
38. D_CENT_CONTROL H_GRN_CENT_CONTROL H_BLU_CENT_CONTROL V_RED_CENT_CONTROL V_GRN_CENT_CONTROL V_BLU_CENT_CONTROL FRONT REAR FLOOR CEIL 00000000000000000 High Voltage Power Supply DESCRIPTION The high voltage status line Low operational HVPS Low Voltage Power Supply DESCRIPTION Power for digital portion of SCB Power for the analog portions of the SCB Power for the analog portions of the SCB Standby power to the CPU and peripherals Tells SCB status of non standby supply all outputs working or not Signal to enable the 24V standby power Signal to enable the LVPS Arc Lamp Power Supply INPUTS LAMP_OK 2 38 DESCRIPTION Informs SCB that the Arc Lamp is installed temperature is within limits and lamp cooling blower is working Model 200 Service Manual Chapter 2 System Description LAMP_LIT Informs the SCB that the Arc Lamp is lit or not lit OUTPUTS DESCRIPTION ILAMP_ENA Enables ALPS power Projection Lens OUTPUTS DESCRIPTION LENS FOCUS Signal to lens focus motor LENS ZOOM Signal to lens zoom motor INPUTS DESCRIPTION FRONT_IR Input from front infrared receiver REAR_IR Input from rear infrared receiver Model 200 Service Manual 2 39 2 40 Chapter 2 System Description 2 3 7 Raster Timing Generator PCB The Raster Timing Generator RTG is located in the electronic card cage Figure 5 1 The RTG I O diagram Figure 2 13 and the list of inputs and outputs Tables
39. IC data line Bidirectional serial line for synchronous data transfer between the SCB and the Convergence Deflection board X_RED_ Red X convergence waveform The amplitude for full scale correction CONV is about 1 VPP X_GRN_ Grn X convergence waveform The amplitude for full scale correction CONV is about 1 VPP X_BLU_ Blu X convergence waveform The amplitude for full scale correction CONV is about 1 VPP Y_RED_ Red Y convergence waveform The amplitude for full scale correction CONV is about 1 VPP Y_GRN_ Grn Y convergence waveform The amplitude for full scale correction CONV is about 1 VPP Y_BLU Blu Y convergence waveform The amplitude for full scale correction CONV is about 1 VPP CORR_ Square wave HCT level synchronous signal for horiz axis SYNC Horizontal Vertical Deflection Board OUTPUTS DESCRIPTION IIC_CLK IIC clock line Unidirectional clock line for control of synchronous data transfer over the IIC bus interface Model 200 Service Manual 2 37 IIC_DATA INPUT HV_OK INPUTS 5 1V 15V 15V 5 1V_Stby ILV_OK OUTPUTS FAN_ENA LV_ENA Chapter 2 System Description IIC data line Bidirectional serial line for synchronous data transfer between the SCB and the Horizontal Vertical Deflection board I Input O Output V_RED_LIN_CONTROL V_GRN_LIN_CONTROL V_BLU_LIN_CONTROL V_RED_EDGE CONTROL V_GRN_EDGE_CONTROL V_BLU_EDGE_ CONTROL L R_KEY_CONTROL L R_PIN_CONTROL WIDTH_CONTROL H_RE
40. IIC_CLK IIC_DATA HOR 5 1V_STBY A16 5 1V ie SELECT 15V B15 15V B14 Pin callouts are to P12 P14 or P18 depending on which VIC slot is being used Figure 2 8 HDTV YPbPr VIC Input Output Diagram This VIC accepts two types of video signals color components YPbPr and RGB signals In either case the output of this VIC is RGB type signals If the inputs are color components they will be converted to RGB type signals The selection between color component input mode and RGB input mode is controlled by an input This input is controlled by the System Controller Board via the IIC serial bus interface LED indication There are two LEDs on this VIC The RGB LED glows when the YPbPr_VIC is selected and is in RGB input mode The YPbPr LED glows when the YPbPr_VIC is selected and is in YPbPr input mode Both LEDs are off when the YPbPr_VIC is not selected as the input to projector Only one LED can be on at one time IIC Interface The YPbPr_VIC is controlled by the serial bus interface The IIC bus comes from the System Controller Board through the Backplane Board All required adjustments for this board are provided via the IIC serial bus interface The information transferred over the IIC bus is indicated below I input to YPbPr_VIC and O output of YPbPr_VIC The selection of this VIC is accomplished through the IIC control bus which provides the SEL_VIC signal Model 200 Service Manual Chapter 2 System De
41. LA The positive output of red ILA driver circuitry about 12 VPP RED_ILA GRN_ILAt GRN_ILA BLU_ILA BLU_ILA ILA THERM INPUTS DESCRIPTION X RED X GRN X BLU Y_RED Y_GRN Y BLU X_RED X_ORN X BLU Y_RED WIDTH_ A DC wave form for controlling width of picture About 4 V max CONTROL OUTPUTS DESCRIPTION Model 200 Service Manual 2 55 Chapter 2 System Description V_PARAB Vertical parabola wave form About 4 VPP V_RAMP Vertical ramp wave form About 4 VPP Raster Timing Generator Board INPUTS DESCRIPTION V_DRIVE Square wave HCT level synchronized to vertical sync with 4H duty cycle High Voltage Power Supply OUTPUTS DESCRIPTION H_ Horizontal parabola for dynamic focus section of High Voltage Power PARABOLA Supply PA PARABOLA Supply 15 V supply for use by convergence board Interlocks and protection None 2 56 Model 200 Service Manual Chapter 2 System Description 2 3 10 Scan Reversal Board The Scan Reversal Board SRB is mounted vertically on the right side of the card cage The following functions are provided by the SRB e Reversal of scan in both horizontal and vertical axes e Horizontal width adjustment for each color R G amp B e Horizontal current feedback e Scan failure detection for all six main horizontal and vertical deflection amplifiers The Scan Reversal Board Input Output diagram Figure 2 16 and the list of inputs and outputs Table 2 15 provid
42. LU_THRES Similar to BLU_THRES Sensitivity correction information for BLU Real time data at O volt to 1 volt Similar to BLU_SENS Similar to BLU_SENS Raster Timing Generator INPUTS SOURCE_ VALID ODD_FIELD 280_CLK 2 36 DESCRIPTION This signal indicates a new source or valid A high indicates a valid stable signal and low indicates change in input signal Square wave with 50 duty cycle which is low during the odd field of an interlace signal This signal is high for noninterlaced signals Square wave signal 50 duty cycle 280 times the frequency of horizontal sync This clock is synchronized to the horizontal sync Model 200 Service Manual Chapter 2 System Description H_ DRIVE Square wave 50 duty cycle synchronized to selected horiz sync V_DRIVE Square wave negative going pulse synchronized to selected vertical sync with pulse width of about 4 horiz lines H_F2V DC voltage proportional to horiz frequenc OUTPUTS DESCRIPTION ISYNC_CLK 5 mHz clock used to generate the internal sync signals IIC_CLK IIC clock line Unidirectional clock line for control of synchronous data transfer over the IIC bus interface IIC_DATA IIC data line Bidirectional serial line for synchronous data transfer between System Controller and RTG Convergence Deflection Board OUTPUTS DESCRIPTION IIC_CLK IIC clock line Unidirectional clock line for control of synchronous data transfer over the IIC bus interface IIC_DATA I
43. ONTROL Data for adjustment of screen width Data for adjustment of screen width Cedesi H_RED_CENT_CONTROL Data for adjustment of red horizontal centering Fee H_GRN_CENT_CONTROL Data for adjustment of green horizontal Z centering AE H_BLU_CENT_CONTROL Data for adjustment of blue horizontal 7 centering EAEI V_RED_CENT_CONTROL The data for adjustment of red vertical ne centering EXE V_GRN_CENT_CONTROL The data for adjustment of green vertical centering KERI V_BLU_CENT_CONTROL The data for adjustment of blue centering FRONT REAR Front or rear projection status line front low and rear high 1 FLOORICEI Floor or ceiling projection status line FFLOORICE hm low and ceiling high Deflection status Low operational Gi ES HVD board High Nonoperational HVD board NENE HVD_MODEL Revision of HVD board Model 200 Service Manual 2 47 Chapter 2 System Description Horizontal Vertical Deflection Board I O This section provides a description of the inputs to and outputs from the HVD Board The I O descriptions are arranged by the source destination of the signal The assembly communicated with is used as the primary heading of each group of signals Those signals are subdivided into inputs and outputs Input refers to an Input to the HVD Board output refers to an output from the HVD Board Table 2 11 Horizontal Vertical Deflection I O signals System Controller Board INPUTS DESCRIPTION IIC_CLK IIC clock line
44. PCB ccccccccsseeccccecceeeeesseeeeeeeeeeeeseeeenteseenenes 4 11 4 10 Horizontal Vertical Deflection PCB rnnr nnen n nennen 4 12 4 11 Video Input Cards VICsS cuina dt nd ale 4 13 4 12 Video Amplifier POB csi dia Lele aloe 4 14 4 13 Scan Reversal Board 4 16 4 14 CRT Y oke Assembly riale eee 4 16 4 15 NGA Assombly atados deta aii le LL bo hci rea 4 18 4 16 Relay LenS sti elabora 4 19 ANT Projection LEen Seed naana a AA ilaele corraini 4 20 4 18 Pism Assemblati eli a a a aa 4 21 Model 200 Service Manual a Chapter 5 Troubleshooting PCB Status LEDS carina iii 5 1 Error Codes ria i ii 5 4 Troubleshooting SUNS rari ine 5 5 Chapter 6 Parts LiSt in 6 1 Appendix A Import Export ennenen nnne A 1 Appendix B Glossary B 1 Model 200 Service Manual Safety Information Safety Information Introduction Read entire Safety Chapter thoroughly before performing any maintenance or service on the projector Only qualified service personnel should perform procedures and adjustments Safety Equipment Use safety equipment specified in the projector s Maintenance training and certification program or equivalent maintain equipment WARNINGS AND CAUTIONS Warnings and Cautions in this manual should be read thoroughly and strictly adhered to Warning and Caution definitions and symbols are as follows CA WARNING SYMBOL PP Warns userofa pote
45. PTION oo O H_BLU_YOKe H_BLU_YOK BLU LOCK BLU_LOCK V_BLU_YOK V_BLU_YOK X_BLU_YOK _BLU_YOK Y_BLU_YOK Y_BLU_YOK Model 200 Service Manual 2 61 Chapter 2 System Description 2 3 11 Backplane PCB The Backplane PCB is the interface that connects the Power Supplies VICs PCBs and other components together either through a direct connection to a connector on the Backplane or through cables to connectors on the Backplane PCB Signals are not modified in any way by the Backplane It serves only as an interconnecting point Refer to Figure 2 17 for a general idea of how the projector wiring is interconnected through the Backplane PCB os FE a Backplane PCB P16 VAB 2 CDB Di HVDB Proj Lens Figure 2 17 Backplane Board Interface Block Diagram 2 62 Model 200 Service Manual Chapter 2 System Description 2 4 Image Light Amplifier Technology Section 2 2 explained how the various units including the ILA assemblies in the Optical System work together to produce the image on the screen This section focuses mainly on how the ILA assembly itself works An Image Light Amplifier ILA assembly Figure 2 18 is a device that uses low intensity images to modulate a high intensity light through a liquid crystal layer It is the key component in producing very bright high resolution images from Hughes JVC large screen projectors Light Blocking Layer Mirror Photoconductor gt Liquid Crystal Layer
46. RTs e Blanking drive section e Phosphor protection for all three CRTs e G2 regulator and adjustment of black level screen for all CRTs e DC restoration for the video signals e CRT interface for focus heater voltage and ARC ground The Video Amplifier Board I O diagram Figure 2 11 and the list of Inputs and Outputs Table 2 8 provide information for the technician to perform module level troubleshooting G1 Regulator for three CRTs The input supply for the G1 grid of the CRTs is G1_SUPPLY and is about 200V The VAB regulates this supply to about 80V to 30V This supply can be adjusted by the G1_ BIAS line This adjustment provides the brightness control function The G1_BIAS signal is an input of the VAB and is generated by the Video Processor Board In the event of a failure such as lack of deflection a high on the SWEEP_OK line this output goes to the most negative value of the input supply about 200V G2 Regulator and black level adjustment for CRTs The VAB also regulates the G2 grid of the CRTs The supply for the G2 grids about 1200V is generated by the HVPS This G2_SUPPLY is an input to the VAB There are also three control inputs RED_G2 GRN_G2 and BLU_G2 The G2 voltage of each CRT is adjusted individually by using these control lines This adjustment provides black level control The G2 output voltages are pulled down during shutdown mode Model 200 Service Manual Chapter 2 System Description
47. Reversed ghost image on If projecting through screen glass prevent light from reflecting back into the lens Picture lacks depth of Adjust Contrast or User s Guide 5 11 2 field Brightness 5 11 1 Grey scale is Blue in Subtract Blue Sensitivity User s Guide 5 9 2 bright areas Offset and add Green and Red Model 200 Service Manual Chapter 5 Troubleshooting Table 5 3 Troubleshooting Guide continued rosie cueck Possistesciunon _ secnon _ Problems Board one source only Generator rotate the CRT Yoke Flagwaving at top of VTR mode checked in User s Guide 4 9 picture or top of image is Timing menu Deselect 4 Timing 5 skewed VTR mode Black line appears on the Loss of fluid in Prism 4 18 screen Replace Prism No Response when Possible defective tether Replace tether cable using a Tether cable cable on the Remote No Response when Intermittent operation Replace remote battery using IR remote or move closer to the projector Stay in the Line of sight of the projector IR Receiver No response when Occurs sometimes when Press Control Q on using keyboard Control S is keyboard to force an commands Projector accidentally pressed XON command hung up This could cause an erroneous XOFF command and requires an XON command to override it Model 200 Service Manual 5 9 Chapter 5 Troubleshooting Model 200 Service Manual Import Export Model 200 C
48. SERVICE MANUAL Model 200 Projector DECLARATION OF CONFORMITY PER ISO IEC GUIDE 22 AND EN 45014 Manufacturer Hughes JVC 2310 Camino Vida Roble Carlsbad Ca 92009 USA Hughes JVC declares that this product conforms to the following Product Specifications Directive Standard Safety EN 60950 IEC 950 1992 EMC EN 55022 1988 CISPR 22 1986 Class A EN 50082 1 1992 IEC 801 2 1991 EN 50082 1 1992 IEC 801 3 1984 EN 50082 1 1992 IEC 801 4 1988 ANSI C63 4 1992 FCC Part 15 Class A In addition the above product complies with the requirements of the Low Voltage Directive 73 23 EEC and the EMC Directive 89 336 EEC 104111 First Edition November 1996 104111 RevA February 1997 Confidential and proprietary information Copyright 1993 by Hughes JVC Technology Corporation All worldwide rights reserved This manual was produced by Hughes JVC Technology Corporation and may be revised without prior notice No part of this manual may be reproduced in any form without the express written permission of Hughes JVC Technology Corporation ILA is a registered trademark of Hughes JVC Technology Corporation DO Model 200 Service Manual Table of Contents Safety Information v Chapter 1 Introduction 1 1 Acronyms Used in Manual A aa 1 1 1 2 Safety ni a sibili lieta 1 2 1 2 Updates iia ai Eens 1 2 14 TOOLLISt ario A ale ini ar 1 2 Chapter 2 Functional Description 2 1
49. Software process error Interpolation Process not allowed to run by higher priority processes Quad Dec Not Init HW Quad Decoder failed Startup Sequence Shutter Stat BAD One or more shutters reading wrong status One other error may appear on the monitor screen with the statement Assertion Failed only if the PC is connected to Port A This is a very rare but serious Model 200 Service Manual 5 5 Chapter 5 Troubleshooting error If it occurs copy the 3 lines that appear on the screen note what occured just prior to this failure and call Hughes JVC 5 3 Troubleshooting Guide Table 5 2 shows some common projector problems what to check when problems occur possible solutions and the section in this Service Manual If User s Guide contains pertinent information the appropriate section will be given that provides some related information on the problem Table 5 3 ce Guide PROBLEM NG POSSIBLE SOLUTION SECTION ET rear panel Main Circuit Breaker fails Verify input power is 4 5 and 4 6 when reset correct Replace defective Low Voltage Power Supply or Arc Foe Tock SA res Power Supply Perla replace switch enabling interlock cover switch Correct channel input amp Select correct channel User s Guide 4 6 ee eee turned on and properly connected invoked _ HIDE key on the remote e E with the HIDE key one CRT ves PO one CRT Video Amplifier Board S Board Arc Lamp Arc Lamp wi
50. T Holder Ring to help loosen it Do not use a tool of any kind to tighten this ring it should be hand tight only Model 200 Service Manual 4 17 Chapter 4 Maintenance Removal Replacement 4 18 8 9 10 11 CAUTION For the Green CRT Yoke Assembly only this step is best performed with the Green CRT still connected to the CRT socket connector and the ground wire still connected from the CRT to the socket connector This is because the Green socket connector is close to the rear of the projector and is easier to disconnect from the CRT after the CRT Yoke Assembly is loose and is moved away from the rear Be careful not to break any of these connections Gently remove the CRT Yoke Assembly by sliding it backward and upward as far as possible before unplugging the CRT socket connector from the neck Use caution to avoid bumping the CRT Yoke Assembly as it is being removed After removing the CRT Yoke Assembly carefully unplug the CRT socket connector and the ground wire that connects the CRT to the socket connector NOTE It may be helpful to have another person assisting for step 9 One person can unplug the CRT socket connector and ground wire while the other person holds the CRT Yoke Assembly firmly After verifying that all cables are out of the way remove the CRT Yoke Assembly from the projector Reinstall the CRT Yoke Assembly in the reverse order NOTE When reinstalling the CRT Yoke Assembly plug the CRT g
51. Unidirectional clock line for control of synchronous data transfer over the IIC bus interface IIC_DATA IIC data line Bidirectional serial line for synchronous data transfer between the System Controller Board and the HVD Board OUTPUTS DESCRIPTION IC_SINT IIC interrupt line This is not used by HVD Board Video Processor Board OUTPUTS DESCRIPTION SWEEPOK Low good scan High no scan Signal is dependent on two inputs DEFL_OK from SRB and H_ENABLE from RTG Scan Reversal Board INPUTS DESCRIPTION FRONT REAR Front or rear projection status line Front low Rear high FLOOR CEIL Floor or ceiling projection status line Floor low Ceiling high DEFL_OK Deflection OK signal High good about 2 v Low no scan H_CUR_ Horizontal current feed back A DC voltage proportional to the output FDBK current closed or OV when open H_OUT_ Horizontal output flyback pulse about 800 VPP FLYBACK 2 48 Model 200 Service Manual Chapter 2 System Description when closed or 15 V when open Output of horiz red centering also top of the red horiz yoke About 5 VDC Output of horz green centering top of green horz yoke About 5 VDC Output of horiz blue centering top of blue horiz yoke About 5 VDC Output of red vertical amplifier About 40 VPP INPUTS V_RAMP V_PARAB OUTPUTS DESCRIPTION WIDTH_CTRL A DC waveform for controlling width of picture About 4 V max Raster Timing Generato
52. VDC boost voltage to the Laser Power Supply Voltage 18 to 25 VDC to maintain the arc lamp ON Current 30 to 38 amps to maintain the arc lamp ON LAMP_OUT Lamp output voltage positive LAMP_RTN Lamp return LAMP_LIT Signal to SCB that the lamp is lit Operation Two signals COVER_ON and LAMP_Ok are required in order for the arc lamp to light COVER_ON from the cover interlock switches tells the Arc Lamp Power Supply that the covers are in place and the interlock switches are pressed down LAMP_OK informs the System Controller that the lamp is installed a mechanical switch activates when lamp is installed The System Controller sends the LAMP_ENA signal to the Arc Lamp Power Supply The LAMP_ENA signal turns on the ALPS The Arc Lamp Power Supply then provides the 140 VDC boost voltage to a spark gap and high voltage transformer which steps up the voltage to approximately 32KV and ignites the Xenon Arc Lamp After the Arc Lamp is lit it is maintained on by the ALPS at a steady 20 volts and 37 amps The LAMP_LIT signal output informs the System Controller if the lamp is lit or not The Arc Lamp Power Supply is electrically and magnetically shielded to prevent noise or disturbances in the CRTs or other circuitry High Voltage Power Supply HVPS The High Voltage Power Supply HVPS is located on top of the LVPS on the right side of projector as viewed from rear This supply provides the anode focus and screen v
53. VIC Table 2 3 Standard RGB VIC I O signals Projector Inputs INPUTS DESCRIPTION RED Video input signals about 0 7 to 1 VPP GREEN BLUE HORIZ Horizontal or composite sync signal VERTICAL Vertical sync signal Video Processor Board OUTPUTS DESCRIPTION Model 200 Service Manual 2 15 Chapter 2 System Description ISEL_VIC RED_VIC GRN_VIC BLU_VIC Select line for VIC A low indicates the RGB_VIC is selected Video signals about 0 7 to 1 VPP H_VIC Horizontal or composite sync signals V_VIC Vertical sync signals System Controller Board INPUTS DESCRIPTION IIC_CLK IIC clock line Unidirectional clock line for control of synchronous data transfer over the IIC bus interface IIC_DATA IIC data line Bidirectional serial line for synchronous data transfer between system control board and the RGB_VIC OUTPUTS DESCRIPTION INIC_INT IIC interrupt line RGB_VIC does not initiate an interrupt Low Voltage Power Suppl INPUTS DESCRIPTION 5 1 V supply for use by RGB_VIC 15 V supply for use by RGB_VIC 15 V supply for use by RGB_VIC 5 1 V_stby 5 1 V stand by supply for use by RGB_VIC Interlocks and protection Input None Outputs None Quad Input RGB VIC The Quad Input RGB VIC consists of four sets of RGBHV inputs and operates in a manner similar to a switcher The four inputs are multiplexed so that only one is enabled at a specific time Software selects the desired input ch
54. Voltage Power Supply Arc Lamp and cooling fans e Fault monitors the HVPS LVPS Arc Lamp and fans e Provides interboard communication via the IIC serial bus e Controls Zoom and Focus of the Projection Lens e IIC Interface control e Provides Video Overlays e Xand Y convergence control e Threshold and Sensitivity for shading e IO control e Two RS 232 serial interface ports e Infrared IR remote control interface Accepts input from front or rear IR detectors e A 5 wire JTAG interface port for CPU emulation support e External 3 color system status LEDs Green indicates normal yellow is standby and red indicates a fault condition e External Service Mode switch see Figure 5 1 Pressing this switch during a power up sequence brings the system up ina diagnostic mode for maintenance rather than a normal operating mode The SCB I O diagram Figure 2 12 and the list of Inputs and Outputs Table 2 9 provide information for the technician to perform module level troubleshooting Model 200 Service Manual Chapter 2 System Description SYSTEM CONTROLLER RSS BOARD FROM LVPS Figure 2 12 System Controller Board Block Diagram IIC Interface RED_OVER GRN_OVER BLU_OVER Y_RED_CONV Y_GRN_CONV Y_BLU_CONV X_RED_CONV X_GRN_CONV X_BLU_CONV BLU_THRES GRN_THRES RED_THRES TO VPB TO CDB TO VPB Communications are performed through the IIC bus to the other PCBs in the system This three wire
55. annel through the IIC bus and ensures that only one RGB VIC is enabled When one of the channels assigned to the Quad RGB VIC is selected the SEL_VIC line to the Video Processor is enabled Model 200 Service Manual Chapter 2 System Description RED_CH1 RED_CH2 RED_CH3 RED_CH4 GRN_CH1 GRN_CH2 GRN_CH3 GRN_CH4 BLU_CH1 BLU_CH2 BLU_CH3 BLU_CH4 HOR_CH1 IIC_CLK IIC_DATA IIC_INT ISEL_VIC 5 1Vstby 5 1V 15V 15V Figure 2 7 Quad Input RGB VIC The same functions performed by the Standard RGBHV VIC are performed by the Quad Input RGB VIC The description of operation and pinouts are the same as the Standard RGBHV VIC One of four LEDs indicates which of the four RGB inputs is currently active HDTV YPbPr VIC This color decoder video input card YPbPr_VIC is located on the back side of the projector and contains three BNC input connectors which can be used for two different inputs YPbPr or GBR This board converts these color component signals to RGB type video signals The following functions are provided by YPbPr_VIC e Video input and output buffers e Conversion of color components signals to RGB video signals e Separation of syncs from the Y G input signal e Hue sharpness gamma and color adjustment e Selection of RGB input or color component input Model 200 Service Manual 2 17 Chapter 2 System Description e LED indication e IIC serial bus interface YIG RED Pb B GRN Pr R BLU
56. are while the projector is operating The first column of the table lists the error number code that appears on the PC screen The second column describes the on screen text The third column provides a description of the problem and any other pertinent information Table 5 2 Error Codes ERROR NUMBER ON SCREEN TEXT DESCRIPTION Invalid read wrt Software error mismatch Open mode vs Write or Read command Ser parity error Serial Port Parity error not currently used Bad dev I O oper Software error invalid I O request Timeout on Read Software error unexpected timeout on Read 1 34 No mem available Software error no heap available for memory allocation Invalid Sector Software error invalid Flash sector number 2 2 Write Timeout Flash Memory Write Failure 2 3 Erase Timeout Flash Memory Erase Sector Failure 2 4 Verify Error Flash Memory Write Verify Failure NOTE Category 3 error codes may occur when power is interrupted by opening the cover interlock switches or during power brown outs Pin Timeout IIC Slave HW protocol error possible on each byte transfer BB Timeout IIC Slave HW protocol error 1st error possible on Read or Write 3 3 No Slave Ack IIC Slave HW protocol error missing acknowledgement on byte transfer NOTE This error occurs if the slave is missing During Power On this error is reported in the POWER category CD PCA Missing
57. bus interface consists of clock line data line and interrupt line Data transferred over the IIC bus is listed in Table 2 9 I O signals System Controller Board Input Output This section provides a description of the inputs to and outputs from the SCB The I O descriptions are arranged by the source destination of the signal The format used is such that the assembly communicated with is used as the primary heading of each output Input refers to an input to the SCB output refers to an output from the SCB Table 2 9 System Controller Board I O signals Video Processor Board I O DESCRIPTION IIC_CLK IIC clock line Clock line for control of synchronous data transfer over the IIC bus interface Model 200 Service Manual 2 35 IIC_DATA OUTPUTS OVERLAY NC_INT RED_OVER GRN_OVER BLU_OVER BLU_THRES GRN_THRES RED_THRES BLU_SENS GRN_SENS RED_SENS Chapter 2 System Description IIC data line Serial line for synchronous data transfer of the following data between Video Processor Board and SCB board I Input O Output BEAM CURRENT OK DETECT RED_CONT GRN_CONT BLU_CONT BRIGHTNESS RED G2 BLU_G2 GRN_G2 WHT_BOOST BLK_BOOST 000000000 DESCRIPTION Overlay control signal IIC interrupt line Red signal of on screen menu and or internal test pattern Similar to RED_OVER Similar to RED_OVER Threshold correction information for blue Real time data at 0 volt to 1 volt Similar to B
58. ce Mode Startup Copyright c 1994 1996 Hughes JVC Technology Command _ To update the System Software from the Boot Manager prompt 12A Type in the command loadsys at the prompt The following should be displayed Command loadsys System software update procedure WARNING IMPROPER USE MAY MAKE THIS SYSTEM UNBOOTABLE NOTE This warning relates to the Flash Memory updating that occurs in Step 12D below Do not turn projector power off while the Flash Memory is updating Memory buffer reset to Oxff Model 200 Service Manual Chapter 3 Service Adjustments Begin your S Record upload now Esc to abort 12B Select Transfers Send Text File from the Windows Terminal Menu normally in Accessories window In the Send Text File Dialog box select List Files of Type All Files and select the disk and or directory with the Model 220 software Select file named zsys hex Press OK to start upload 12C During upload a progress indicator updates the number of records received When the upload is complete the system will display the following numerical values are for example only and depend on the System Software version S Records processed 11282 Upload Successful Address Range 0x00020000 0x000781cf Bytes Loaded 360912 WARNING FLASH WILL NOW BE UPDATED m Press Ente
59. ce enable line low enabled convergence 1 ILA_LOCKED Status line for the lock indication of the PLL of the eee ILA section with high locked PLL 1 CD_OK Convergence board status line Low operational C D Board High Nonoperational C D Board CD_MODEL Revision of C D Board The Convergence Deflection Board I O This section describes the inputs to and outputs from the C D Board The I O descriptions are arranged by the source and destination of the signal The assembly communicated with is the primary heading of each group of signals Those signals are subdivided into inputs and outputs Input refers to an Input to the C D Board output refers to an output from the C D Board Table 2 13 Convergence Deflection I O signals System Controller Board INPUTS DESCRIPTION data transfer over the IIC bus interface IIC_DATA IIC data line Bidirectional serial line for synchronous data transfer CONV correction is about 1 VPP X_GRN_ Green X convergence waveform The amplitude for full scale CONV correction is about 1 VPP Y_RED_ Red Y convergence waveform The amplitude for full scale correction CONV is about 1 VPP CONV correction is about 1 VPP CONV correction is about 1 VPP n Square wave HCT level synchronization signal for horizontal axis OUTPUTS DESCRIPTION INIC_SINT IIC interrupt line Convergence board does not initiate any IIC interrupt 2 54 Model 200 Service Manual Chapter 2 System Description RED_I
60. cuit breaker is off Use a Null Modem cable to connect a PC to the projector s Serial Port A Start Windows 3 1 Click on the terminal icon from the Accessories Directory From the Terminal menu select Settings Terminal Emulation and click on DEC VT 100 ANSI Select OK Under Settings choose Terminal Preferences Under Terminal Preferences the following selections are appropriate Terminal Modes Sound CR gt CR LF Both off Columns 80 Cursor Block amp Blink Terminal Font Fixedsys 15 Translation None Show Scroll Bars On Buffer Lines 100 Use Function Arrow amp Control Keys for Windows Off Select OK Model 200 Service Manual Chapter 3 Service Adjustments 7 Under Settings select Text Transfer Standard Flow Control Select OK 8 Under Settings select Communications and choose Connector select the PC port being used Baud Rate 9600 or 19200 depending on the System Controller Switch block Pos 4 see note below this step Data Bits 8 Stop Bits 1 Parity None Parity Check Off Carrier Detect Off Flow Control XON XOFF Select OK NOTE Switch position 4 on the switch block at the card edge of the System Controller see Figure 5 1 controls the baud rate for Serial Port A for the Boot Manager and System Software Down 9600 Up 19200 Ensure the other SCB switches 1 2 and 3 are in the Down position 9 Turn the projector circuit breaker on while depressing and holding down the service mode switch on the SCB s
61. d Vertical size is different Adjust vertical size pots Deflection board Table 5 3 Troubleshooting Guide continued Model 200 Service Manual 5 7 Chapter 5 Troubleshooting PROBLEM CHECK POSSIBLE SOLUTION SECTION Not enough range in Red Adjust Red or Blue 5 5 11 or Blue XY convergence CENTERING to match Green Picture Color Balance Picture Various Problems Red Green or Blue is ILA assembly bias 4 13 missing in the image voltage is incorrect or there is no signal replace Video Amplifier Board Red Green or Blue Replace ILA assembly lacks color or Video Amplifier Board Grey scale test pattern is Readjust Contrast User s Guide 5 11 2 incorrect overdriven level and Brightness 5 9 1 5 11 1 Bright Red Green or Adjust ILA bias and User s Guide 5 7 5 10 Blue area on screen shading limited to corners or edge Grey scale is Green in Subtract Green User s Guide 5 9 2 bright areas Sensitivity Offset and add Red and Blue Grey scale is Red in Subtract Red Sensitivity User s Guide 5 9 2 bright areas Offset and add Green and Blue Small dark line or dot in Scratch in optics or CRT 4 15 Red Green or Blue burn Replace CRT image or Blue image assembly Ss Out of focus blurry area Clean oily spot off CRT 3 12 on image limited to Red Prism or Projection Green or Blue Lens Image ghost in picture Replace burn in CRT or 4 15 4 16 ILA assembly
62. d Programmable Gate Array F to V Frequency to Voltage G2 CRT Grid 2 HVDB Horizontal Vertical Deflection Board HDTV High Definition Television Hz Hertz HSYNC Horizontal Sync HVDB Horizontal Vertical Deflection Board HVPS High Voltage Power Supply IIC Inter Integrated Circuit ILA Image Light Amplifier 1 0 Input Output I R Infrared kHz Kilohertz LED Light Emitting Diode LVPS Low Voltage Power Supply NTSC National Television Standards Committee PAL Phase Alternating Line PCB Printed Circuit Board PLL Phase Lock Loop Model 200 Service Manual Model 200 Service Manual PLUGE RGBHV SECAM Chapter 1 Introduction Picture Line Up Generating Equipment Random Access Memory Red Green and Blue Red Green Blue Horizontal Vertical Read Only Memory Raster Timing Generator System Controller Board Sequential couleur a memoire Sequencial color with memory Scan Reversal Board Synchronization Transistor Transistor Logic Underwriter Laboratories Ultraviolet Video Amplifier Board Voltage Controlled Oscillator Video Input Card Video Input Video Processor Board Vertical Sync Video Tape Recorder Luminance Chrominance 1 3 Chapter 1 Introduction 1 4 Model 200 Service Manual Chapter 2 System Description 2 0 System Description Contents 2 1 Introduction 2 1 2 2 Optical A 2 2 2 2 1 Image PAU Miata sce ieee etch atte ta araia dnni niiina nasas 2 2 2 2 2 Arc Lamp Light PA 2 4 2 3 E
63. d not need adjusting unless the CRT or yoke is moved Remove the rear cover Section 4 2 and tilt the electronic module up Sections 3 3 1 Select Test Pattern 8 Center Lin 2 View the color for the CRT that requires rotation Hide the other 2 colors 3 In the Geometry menu set Reg Enable to off by unchecking the box Unchecking the Reg Enable box temporarily disables any convergence corrections that have been performed with a different CRT Yoke assembly and sets these values to the default levels so that CRT Rotation can be accomplished correctly Model 200 Service Manual Chapter 3 Service Adjustments 4 In the Geometry menu access Bow Skew Pincushion and Keystone Note the values for each setting After recording values set each to the default level of 128 For Skew select the color of the CRT that is to be rotated the other functions are not color selectable This is done so that the CRT Rotation can be properly performed without the influence of any previous corrections made for these adjustments 5 Loosen the 2 set screws Figure 3 5 near the top of the CRT sleeve 6 Loosen the CRT Thumbscrew Figure 3 5 on the top of the CRT Assembly 7 Tilt the yoke by grasping the Thumbscrew and moving it in whichever direction it takes to make the CRT raster square 8 When the CRT raster is square on the screen tighten the 2 set screws first then the CRT thumbscrew 9 In the Geometry menu toggle the
64. ded into inputs and outputs Input refers to an Input to the VAB output refers to an output from the VAB Model 200 Service Manual 2 31 Chapter 2 System Description Table 2 8 Video Amplifier I O signals Video Processor Board INPUTS DESCRIPTION RED_VIDEO Video preamp signals About 0 5 VPP GRN_VIDEO BLU_VIDEO G1_BIAS Brightness control line 0 to 5 V DC Black level G2 control lines 0 to 3 1 V RESTORE Video DC restoration pulse logic HC positive going 4 duty cycle OUTPUTS DESCRIPTION VAB status line Low good VAB High Bad VAB This signal is called HV_ENABLE at the HVPS RED_BEAM Cathode beam current lines about 1 volt per 100 UA GRN_BEAM BLU_BEAM High Voltage Power Supply INPUTS DESCRIPTION G1_SUPPLY Supply for G1 grid of CRTs About 200 V G2_SUPPLY Supply for G2 screen grid of CRTs About 1200 V RED_FOCUS Focus supply for CRTs about 7 KV GRN_FOCUS BLU_FOCUS OUTPUTS DESCRIPTION ARC_GND CRT ground anode supply return line Horizontal Vertical Deflection Board INPUTS DESCRIPTION SWEEP_OK Deflection detection line open collector low good deflection 2 32 Model 200 Service Manual Chapter 2 System Description Raster Timing Generator Board INPUTS DESCRIPTION BLANKING Blanking signal logic F type CRTs OUTPUTS DESCRIPTION RED_FOCUS Focus supply of CRTs about 7 KV GRN_FOCUS BLU_FOCUS RED_GRID1G Grid 1 G1 signal of CRTs RN_GRID1BL U_GRI
65. deo Amplifier PCB 1 2 3 Remove the front and rear covers Section 4 2 Tilt the Electronic Module up Section 3 3 Loosen the Green CRT Holder Ring knurled knob see Figure 3 5 Read the Caution below this step before removing the CRT Holder Ring completely NOTE The holder ring should only be hand tight If it cannot be removed by hand a flathead screwdriver can be used in the slots on the CRT Holder Ring Figure 3 5 to help loosen it Use care not to let the flathead screwdriver slip out of the slot and possibly damage components Do not use a screwdriver or any other tool to tighten this ring it should be hand tight only CAUTION This step is performed with the CRT Socket Connector still connected to the Green CRT and the ground wire still connected from the CRT Yoke Assembly to the CRT Socket Connector This is because the Green CRT Socket Connector is close to the rear of the projector and is easier to disconnect from the CRT after the CRT Yoke Assembly is loose and is moved away from the rear of the projector Use extreme care not to break any of these connections when removing the CRT Yoke Assembly 4 Carefully remove the Green CRT Yoke Assembly by sliding it backward and upward as far as possible before disconnecting the Green CRT Socket Connector from the CRT neck Use care to avoid bumping the CRT as it is being removed and to avoid breaking any of the wires that connect from the CRT Socket Connector to the Vide
66. e LED on the left glows when S Video is selected Only one LED can light at one time IIC Interface The Quad Standard Decoder VIC is controlled by the serial bus interface The IIC bus comes from the System Controller Board through the Backplane Board All required adjustments for this board are provided via the IIC serial bus interface The information transferred over the IIC bus is indicated below I input to YPbPr_VIC and O output of YPbPr_VIC The selection of this VIC is accomplished through the IIC control bus which provides the SEL_VIC signal Table 2 4 Quad Standard Decoder VIC IIC Interface vo Information Description SOURCE Selects input source Composite Video or S Video I STANDARD Selects signal standard AUTO NTSC PAL SECAM 4 43NTSC Model 200 Service Manual 2 21 Chapter 2 System Description 1 TINT Data for adjustment of Hue Ro COLOR Data for adjustment of color MA SHARP Data for adjustment of Sharpness Selection of VTR mode Selection of Video Noise Reduction mode Quad Standard Decoder VIC I O This section provides a description of the inputs to and outputs from the Quad Standard Decoder VIC The I O descriptions are arranged by the source destination of the signal The format used is such that the assembly communicated with is used as the primary heading of each group of signals Those signals are further subdivided into inputs and outputs Input refers to an Input to the VIC output
67. e arc lamp For a more detailed description of how the ILA assembly works refer to Section 2 7 below Polarizing Prism The polarizing prism receives the high intensity light from the xenon arc lamp and polarizes the light horizontally The prism reflects virtually all of this light toward the ILA assembly This light is then modulated altered into a vertical plane by the image on the input side of the ILA assembly and then reflected back into the same prism Since the prism reflects only horizontal light and passes vertical light this high intensity vertically polarized image goes straight through the prism toward the Combining Prism Light that is not completely polarized horizontally or vertically passes through the prism in varying degrees of brightness according to how polarized it is fully polarized light resulting in maximum brightness on the screen Image Mirror The Image Mirrors direct the blue and red images toward the Combining Prism Model 200 Service Manual 2 3 Chapter 2 System Description Combining 4P Prism The combining prism consists of separate prisms that polarize each of the three high intensity signals and direct them toward the projection lens Projection Lens The Projection Lens picks up the high intensity image from the Combining Prism and transmits it to the projector screen 2 2 2 Arc Lamp Light Path The Arc Lamp assembly produces the high intensity light used to transmit bright images
68. e information for the technician to perform module level troubleshooting Table 2 14 shows the signal states for modes of projector operation The SRB does not require any IIC bus interface Table 2 14 Scanning signal states Mode of Operation eee SSA Front and floor projection Front and ceiling projection Rear and floor projection Rear and ceiling Model 200 Service Manual 2 57 Chapter 2 System Description Figure 2 16 Scan Reversal Board Input Output Diagram Scan Reversal Board O This section describes the inputs to and outputs from the SRB The I O descriptions are arranged by the source destination of the signal The assembly communicated with is the primary heading of each group of signals Those signals are subdivided into inputs and outputs Input refers to an Input to the Scan Reversal Board Output refers to an output from the Scan Reversal Board 2 58 Model 200 Service Manual Chapter 2 System Description Table 2 15 Scan Reversal Board I O signals Horizontal Vertical Deflection Board INPUTS DESCRIPTION Nolo Horizontal output flyback pulse about 800 VPP FLYBACK i H_LOCK Horizontal interlock for yoke connectors This should be about 5 V when closed or 15 V when open H_RED Output of horizontal red centering also top of the red horiz yoke About 5 Vdc H_GRN Output of horizontal green centering also top of the green horiz yoke About 5 Vdc H_BLU Output of horiz blue centering a
69. ee Figure 5 1 for at least 5 seconds or until Boot Manager appears on the terminal monitor The Power On LED stays Red 10 The following should be displayed on the Windows Terminal screen where x x 0 is the currently loaded Boot Manager version e g 0 9 0 or 1 1 0 Boot Manager Ver x x 0 Service Mode Startup Copyright c 1994 Hughes JVC Technology Command _ 11 Verify that the Boot Manager version is correct If it is necessary to update the Boot Manager perform the following steps If the Boot Manager is already up to date skip to Step 12 to update the System Software 11A Enter the command loadboot at the prompt You should see the following output Command loadboot Boot Manager software update procedure WARNING IMPROPER USE MAY MAKE THIS SYSTEM UNBOOTABLE This warning relates to the Flash Memory updating that occurs in Step 11D Do not turn projector power off while the Flash Memory is updating SEE Memory buffer reset to Oxff Begin your S Record upload now Esc to abort 11B From the Windows Terminal Menu normally in Accessories window select Transfers Send Text File then select List Files of Type All Files and select the disk and or directory with the projector software You should see a file named boot hex Select this file and press the OK button to begin the upload Model 20
70. eo frame Odd lines in one field and even lines in another make up one frame One complete TV picture or screen of information It is composed of two fields and has B 1 Glossary Horizontal Scan Reversal Jumper Horizontal Size Coils Hot Spot Hue Ignitor Image Light Amplifier ILA Image Mirror Interlacing I R Windows Lamphouse Dock Laser Power Supply Lumen a total of 525 scanning lines in NTSC transmission Reverses the image projection for front or rear projection Located on the Horizontal Deflection Board Adjusting coils on the Scan Reversal Board Used to adjust the horizontal size width The Arc Lamp s brightest area on the screen Used to align and focus the Arc Lamp Also referred to as tint A specific color such a blue pink or aqua Hue or tint control on a display device adjusts red green balance Provides a momentary high voltage to excite the gases in the Xenon Arc Lamp to ignite A device that uses low intensity images to phase modulate a high intensity light through a liquid crystal layer It is a key component in producing very bright high resolution images from Hughes JVC large screen projectors Directs the blue and red images toward the Combining Prism The technique that refreshes a display screen by alternately displaying all the odd lines field one and then all the even lines field two of one frame The Series 200 Projector has two I R windows one
71. er and rear panel off Model 200 Service Manual 5 1 Chapter 5 Troubleshooting x o 00 o 0000 o a Figure 5 2 Left side of projector with rear cover off n d o Figure 5 3 Right Side of projector with rear cover off 5 2 Model 200 Service Manual Chapter 5 Troubleshooting O Figure 5 4 Convergence Deflection and Video Amplifier LEDs 5 2 Error Codes For certain errors that may occur in the Model 200 Projector the software provides error codes that are helpful in determining the nature of the problem These error codes are visible on the left side of the monitor screen when using a PC connected to Port A or Port B Table 5 1 Error Categories Category air 1 CEXEC Operating System 2 FLASH HW Flash Memory HW driver 3 IIC HANDLER IIC Handler for Convergence Deflection PCB Horizontal Vertical Deflection PCB Raster Timing Generator PCB Video Amplifier PCB Video Processor PCB POWER ON OFF Power On Sequencing 5 FLASH MANAGER Flash Memory Data Manager 6 VIDEO SWITCHER EXTRON or JVC Video Switcher Handler ANSI OUTPUT Ansi Output Display process UI CHAN SRC User Interface VIC Configuration Handler for Channel SRC Data VIDEO INPUT CARD VIC Card Handler HARDWARE Misc HW shutters etc Model 200 Service Manual 5 3 Chapter 5 Troubleshooting The error codes listed in Table 5 2 describe problems associated with software Version 0 9 8 and hardw
72. ertical plate up or down so that the hot spot is centered vertically 13 Tighten the 2 vertical alignment screws 14 Adjust the focus screw for overall brightness from the center to the edges with a minimum of rolloff NOTE Rolloff is the gradual difference in brightness from the center of the screen to the edges Ensure the bright area extends to the edges of the screen but not over the edges If possible use a light meter to perform this step If using a light meter try to achieve a rolloff of no more than 4 1 to the screen corners The darker areas in each of the corners should be balanced evenly 15 When the Arc Lamp is focused over the entire screen area and balanced vertically and horizontally reset the Green ILA bias to original value Model 200 Service Manual 3 3 Chapter 3 Service Adjustments 3 2 Arc Lamp Current Setting The Arc Lamp current must be set whenever an Arc Lamp or Arc Lamp Power Supply is replaced Routinely recheck current about every 500 hours of operation This procedure is performed using two DVMs for convenience but can be performed with one DVM by moving the leads back and forth between the two test points mentioned and changing the scale ranges on the DVM To perform the Arc Lamp Current Setting 1 Verify that power is off to the projector or turn power off with the remote it is not necessary for the circuit breaker to be off 2 Place a DVM set to read up to 200VDC across the Arc
73. ide of the projector free from foreign objects such as hairpins nails paper etc Do not attempt to retrieve any object or insert metal objects such as wire and screwdrivers inside the unit If an object falls inside the projector immediately unplug the projector and call a Hughes JVC certified technician to remove object Model 200 Service Manual gt RK Safety Information X Model 200 Service Manual Chapter 1 Introduction 1 0 Introduction This Service Manual is designed to be used with the Model 200 User s Guide This service manual provides information on the Projector functional description Service adjustments removal and replacement of subassemblies and Troubleshooting The user s guide covers the projector s installation operation setup adjustments and specifications Together the service manual and user s guide provide a qualified service person with information to operate and maintain the projector 1 1 Safety This projector contains high voltages and high intensity light sources in its internal system and power supplies Read entire Safety Chapter at the front of this manual before performing any adjustments or maintenance When performing procedures that call for projector s power to be on always wear high voltage gloves ANSI ASTM 10 000 volt rated when working around the CRTs Arc Lamp or power supplies Wear safety goggles rated X5 when working anywhere near the light path f
74. imilar to RED_THRES BLU_THRES Similar to RED_THRES vo DESCRIPTION 1 0 IIC_DATA IIC data line Bidirectional serial line for synchronous data transfer between SCB and other circuit boards See detailed description for list of signals transferred and data direction IHC_CLK IIC clock line Unidirectional clock line for control of synchronous data transfer over IIC bus IIC_INT Interrupt output to SCB Raster Timing Generator INPUT DESCRIPTION CLAMP Pulse signal input from the RTG board Indicates the commanded timing and duration of the DC RESTORE BLANKING Pulse signal input from the RTG board Indicates the commanded BLANKING interval during the scan GRN_INPUT Video Amplifier INPUT DESCRIPTION RED_BEAM Voltage signal proportional to cathode current averaged over several horizontal lines in the red CRT Voltage level is mV uA GRN_BEAM Similar to RED_BEAM BLU_BEAM Similar to RED_BEAM NA_OK Issued from the VAB to indicate VAB working properly Model 200 Service Manual 2 27 Chapter 2 System Description RESTORE DC RESTORE control signal When this signal is asserted the DC level of the video signal is clamped at the proper value on the VAB External Video INPUT DESCRIPTION RED_VIC 1 Red video input from video input card 1 GRN_VIC 1 Similar to RED_VIC 1 BLU_VIC 1 Similar to RED_VIC 1 RED_VIC 2 Similar to RED_VIC 1 GRN_VIC 2 Similar to RED_VIC 1
75. it breaker on the rear panel is in the On position The 24V standby power for the fans turns on when the FAN_ENA signal is received from the System Controller this turns off in 5 8 minutes if power is not turned on by the remote control or a PC All other voltages supplied by the LVPS are activated when power is turned on at the remote or PC These include 5 1V for digital components 6 2V for CRT filaments 15V for analog circuits and the 80V supply which is used by the High Voltage Power Supply Video Amplifier PCB and the Horizontal Vertical Deflection PCB Arc Lamp Power Supply ALPS P71 P74 To Lamp ROSE i LAMP OUT Module J74 P72 P73 To Lamp GND LAMP_OK To P9 on Module J74 Backplane LAMP_LIT GND 2 LAMP_OK LAMP_ENA COVER_ON GND Figure 2 4 Arc Lamp Power Supply Block Diagram Main Functions e Provides ignition power to turn the Xenon Arc Lamp ON e Provides steady state power to maintain the lamp ON Inputs The Arc Lamp Power Supply receives AC input power directly from the power source The input range is from 100 240 VAC at 50 or 60 Hz ILAMP_ENA From System Controller Turns on the ALPS Model 200 Service Manual 2 9 Chapter 2 System Description COVER_ON Cover interlock signal Indicates both covers are in place LAMP_OK Tells the ALPS that the lamp is installed the temperature is within limits and the lamp cooling blower is working Outputs 140
76. ive screws that secure the Video Amplifier PCB to the projector frame Make sure everything is out of the way then slide the Video Amplifier PCB toward the left so the mounting screws will clear the access holes and remove the board from the projector Reinstall in the reverse order from above NOTE The Video Amplifier PCB is shipped with the 3 CRT Socket Connectors attached at the end in a breakaway arrangement Figure 4 9 Use a pair of diagonal cutters 4 15 Chapter 4 Maintenance Removal Replacement and carefully cut the socket connectors away from the Video Amplifier PCB The spacers between the CRT Socket Connectors can be discarded 4 13 Scan Reversal PCB The Scan Reversal PCB is located on the right side of the Electronic Module To remove the Scan Reversal PCB 1 Remove the projector rear cover Figure 4 10 Scan Reversal PCB 2 Disconnect 7 connectors J52 J54 464 J65 J66 J50 or J50A and J100 or J101 To remove push in slightly squeeze the tabs then pull connector out 3 Move all cables out of the way Remove the 4 pozidrive screws Figure 4 10 and lift the board out 5 Reinstall in the reverse order from above 4 14 CRT Yoke Assembly Warning the CRT Yoke Assemblies should be handled with extreme caution If dropped they can implode and flying glass can cause severe injury to personnel Be careful not to bump or drop the CRT Place in a safe area immediately after rem
77. jector EXPORT file A 2 Model 200 Service Manual Import Export 2 Import will alter all projector setup data Prior to starting several warnings are displayed to prevent unintentional loss of setup data 3 Model 200 Menu 7 System 5 Maintenance 6 Import WARNING Importing New Configuration ALL SETUP DATA WILL BE CHANGED lt ENTER gt to Continue lt ESC gt to Cancel 4 Press ENTER to continue with the Import Import Configuration Old Configuration will be restored if import is Aborted lt ENTER gt to Continue lt ESC gt to Cancel 5 Press ENTER to continue with the Import Import Configuration Start SEND TEXT Upload from Host on Serial PORT A To Abort gt Stop Host Upload gt THEN Press ESC to Abort 6 Windows TERMINAL Transfers Send Text File 6 1 Directories set directory to desired upload directory C TEMP 6 2 File Name Type desired File Name for example import1 txt 6 3 Select OK with mouse or press Enter key upload begins 6 4 Verify TERMINAL screen shows status line at bottom Stop Pause complete bar Sending EXPORTI TXT 6 5 Data transfer will continue until complete or an arror occurs or the User Aborts Expect 10 minutes to import 20 sources 500 000 bytes at 9600 baud 6 6 At successful end TERMINAL will remove the bottom
78. jector cover When changing jumpers for front or rear screen projection Centering convergence and shading must be rechecked 3 9 2 Inverted Vertical Jumper Setting The Ceiling Floor jumpers invert the image vertically for use in situations using mirrors or ceiling projections Figure 3 7 illustrates the location of the jumpers on the Scan Reversal Board and indicates the proper location for ceiling or floor projection The Model 200 Projector is shipped in the normal vertical projection position with the jumper plug inserted into J53 For an inverted vertical setup this jumper plug must be inserted into J53A Refer to Figure 3 7 To invert the vertical image 1 Turn power off at the projector and wait for the arc lamp to cool 2 Remove the projector rear cover Section 4 2 3 Tilt the electronic module up Section 3 3 4 Verify that the vertical jumper is inserted in the correct jacks for appropriate application see Figure 3 7 Change jumpers if necessary g Replace the electronic module and rear cover When changing jumpers for floor or ceiling screen projection Centering convergence and shading will need to be rechecked 3 10 Vertical and Horizontal Size Settings Adjust the vertical height pots and horizontal size coils when replacing the Horizontal Vertical Deflection board Scan Reversal board or CRT Yoke assembly They may also be needed when the convergence adjustment procedures fail to bring the color
79. lectronics System sirenetta arianna iaia pe 2 7 2 3 1 General Description nern nen nrnna nenn n rnern 2 7 2 3 2 Power SupplieS 2 8 2 3 3 Video Input Cards cee eeeeeeeeeeeeeeeeeeeeeeeees 2 14 2 3 4 Video Processor POB scsiccsiccissicenitheavabtoremcantiacsaaerntceas 2 24 2 3 5 Video Amplifier PCB 0 ccccssesssscecceeeeeeeeseseeeeeeees 2 30 2 3 6 System Controller PCB ooooocccccccnnanconccccccccnnnnnnannncnonnos 2 34 2 3 7 Raster Timing Generator PCB 2 40 2 3 8 Horizontal Vertical Deflection PCB 2 45 2 3 9 Convergence Deflection PCB 2 51 2 3 10 Scan Reversal PUB indio 2 57 2 3 11 Backplane PCB nenne 2 62 2 4 Image Light Amplifier Technology c ccceeeeeeeeeeeeettneeees 2 63 2 1 Introduction The assemblies and components in the Model 200 projector are contained mainly in the five sections below Model 200 Service Manual The Optics Assembly Section is located at the front area of the projector The Optics Assembly Section includes the Condensing Lens Cold Mirror IR Filter CAUTION The term cold mirror is used because the mirror passes infrared light and its reflection contains only cold light that does not transmit appreciable heat As a result of the absorption of infrared heat radiation cold mirrors can get ve
80. ll not light Replace worn out Arc 4 4 Clicking noise is heard Lamp ee projector is turned Chika noise not LVPS ALPS or Ignitor 4 6 4 5 4 4 udible when projector is faulty Replace LVPS PR on ALPS or Ignitor Arc Lamp ignites but will Replace defective Ignitor 4 4 not stay lit 5 6 Model 200 Service Manual Chapter 5 Troubleshooting pene 5 3 T Guide I PROBLEM CHECK POSSIBLE SOLUTION SOLUTION SECTION Arc Lamp Brightness flicker or Arc Lamp may have too picture is very dim many hours of usage Replace Arc eamp Lens Focus procedure ILA spacer balls are Perform the CRT visible but the image is Mechanical Focus fuzzy procedure limited and the image is focus fuzzy CRT focus in not Ensure the ILA effective assembly is installed correctly e shadow on right edge ao eee appear legible ee O io limited to one color too high Picture Geometry Picture not centered or Repeat the Blanking User s Guide 5 4 3 Phase Size and 5 4 4 5 5 1 5 5 2 Centering procedures left or right edge Phase 5 4 4 o not squared User s Guide 5 5 3 A ene if necessary through 5 5 10 Image bowed at el Check Bow Pincushion User s Guide 5 5 3 adjustments Vertical or Edge 5 5 8 Linearity XY Convergence Linearity is different Yoke not properly set on between colors Unable CRT Perform CRT to converge Rotation procedure different between colors Scan Reversal Boar
81. lso top of the blue horiz yoke About 5 Vdc V_RED Output of red vertical amplifier about 40 VPP V_GRN Output of green vertical amplifier about 40 VPP V_BLU Output of blue vertical amplifier about 40 VPP 15 volt supply for use by SRB 5 volt supply for use by SRB 15 V supply for use by SRB OUTPUTS DESCRIPTION H_LOCK Horizontal interlock for yoke connectors It should be 5 V when closed or 0 V when open VRED Current feedback of red vertical amplifier V_RED_SENS V_GRN V_GRN_SENS Current feedback of green vertical amplifier V_BLU a V_BLU_SENS Current feedback of blue vertical amplifier FRONT REAR Front or rear projection status line Front low and rear high FLOOR CEIL Floor or ceiling status line Floor low and ceiling high H_CUR_FDBK Horizontal current feed back a DC signal proportional to horz output current Deflection status line high about 2 V good low no scan Output of horizontal red convergence amplifier Model 200 Service Manual 2 59 Chapter 2 System Description x BLU vY_RED Y_GRN YBU outputs _ pescrpion _ X_RED X_GRN X BLU Y_RED Y_GRN Y_BLU _SSaeee name DESCRIPTION S H_RED_YOK H_RED_YOK RED_LOCK RED_LOCK V_RED_YOK V_RED_YOK X_RED_YOK X_RED_YOK Y_RED_YOK Y_RED_YOK Name DESCRIPTION 2 60 Model 200 Service Manual Chapter 2 System Description V_GRN_YOK V_GRN_YOK X_GRN_YOK X_GRN_YOK Y_GRN_YOK Y_GRN_YOK NAME DESCRI
82. mputer must have a 16550 UART installed on the Comm Port An unbuffered 8550 UART will lose data during EXPORT This data loss cannot be detected until a later IMPORT is attempted Use 9600 if you are not sure In all cases use SOFTWARE FLFOW CONTROL XON XOFF WARNING Laptop computer users must disable Advance Power Management APM during an Export APM power pulling causes loss of data EXPORT 1 Make sure the Windows TERMINAL program is configured for SOFTWARE FLOW CONTROL XON XOFF A corrupt Export file will result if SW flow control is not used 2 Choose the directory and filename for saving the Export Data The Windows TERMINAL Transfers Receive Text File dialog box will default to the c windows directory and no file Create a directory like TEMP or have an existing one in mind before starting the export process 3 Model 200 Menu 7 System 5 Maintenance 5 Export Export Configuration Start RECEIVE TEXT Download to Host on Serial PORT A lt ENTER gt to Continue lt ESC gt to Cancel 4 Windows TERMINAL Transfers Receive Text File 4 1 Directories set directory to desired download directory C TEMP 4 2 File Name Type desired File Name for example exportl txt Model 200 Service Manual A 1 Import Export 4 3 Select OK with mouse or press Enter key dialog will be removed 4 4 Verify TERMINAL screen shows status line at bottom
83. n or modification The sync signals horizontal and vertical are also directly connected to the Backplane Board Model 200 Service Manual Chapter 2 System Description LED indication The RGB VIC includes an LED which glows when the board is selected i e when the SEL_CH line is low as the input for the Model 200 Projector IIC serial bus interface section The RGB_VIC is controlled by the serial bus interface The IIC bus comes from the System Controller Board through the Backplane Board The information transferred over the IIC bus is indicated below I input to the RGB VIC and O output from the RGB VIC The RGB VIC does not use the interrupt line of the IIC bus interface Table 2 2 Standard RGB VIC IIC communication vo _ Bits information Description 1 ISEL_CH Select line for the RGB_VIC Low Selected RGB_VIC o 4 vici VIC identification lines 0000 for RGB_VIC o 1 VIC MODEL Revision of the RGB_VIC 1 IVIC_OK RGB VIC status line Low operational RGB_VIC The RGB_ VIC I O This section provides a description of the inputs to and outputs from the RGB_VIC The I O descriptions are arranged by the source destination of the signal The format used is such that the assembly communicated with is used as the primary heading of each group of signals Those signals are further subdivided into inputs and outputs Input refers to an Input to the RGB_VIC output refers to an output from the RGB_
84. ntial electric shock hazard in a procedure or situation that could result in personal injury if improperly performed NI S S SK CAUTION SYMBOL Warns user of a potential safety hazard or potential light hazard from ultraviolet infrared or bright light that could cause severe eye injury or a situation that could result in damage to the equipment if improperly used Model 200 Service Manual v Safety Information Installation Safeguards A WARNING Procedures in this service manual require removing the projector s covers to access internal component to remove replace service and adjust the projector Only Hughes JVC Certified Technicians are qualified to perform these procedures Before removing or replacing any internal components or subassemblies verify that the circuit breaker on the back panel is in the Off position and remove the power plug Any adjustments performed that require covers off and power on should be performed with extreme care Be especially aware of all hazardous areas indicated by warning and caution labels CAUTION Do not use a forklift to lift the projector without using a safe shipping pallet Lifting the projector without supporting the weight at the foot locations can cause severe damage to the projector If there is any visible damage to the power cable disconnect power to the projector until the damaged cable is replaced Install the projector on a smooth vibration
85. o Amplifier Move the Green CRT Yoke Assembly away from the rear of the projector then disconnect the Green CRT Socket Connector and the ground wire between the CRT Yoke Assembly and the CRT Socket Connector NOTE It may be helpful to perform this step with a partner one person to hold the CRT Yoke Assembly firmly and the other to remove the CRT Socket Connector and the ground wire Gently lay the Green CRT Socket Connector on the top of the Video Amplifier PCB Model 200 Service Manual Chapter 4 Maintenance Removal Replacement Place the Green CRT Assembly in a safe location on or against one of the other CRT Assemblies Disconnect the Red and Blue CRT Socket Connectors and gently lay them on the top of the Video Amplifier Board Disconnect the 3 connectors push in slightly squeeze the tabs and pull out J67 J68 and J69 from the Video Amplifier PCB Move the cables out of the way r a A Y RTA Figure 4 9 Video Amplifier PCB showing breakaway CRT Socket Connectors 10 11 12 13 Model 200 Service Manual Disconnect the 3 Focus cables that run from the CRT Socket Connectors to the Focus connectors on the HVPS NOTE Observe that each of the 3 Focus cables large red wires that run from each CRT Socket Connector to the Focus connectors on the HVPS is joined near the CRT by a coupler plug and jack Disconnect and label the focus cables at these couplers Loosen the 6 pozidr
86. ocked loop and the supporting circuitry of RTG board 15V Power for the phase locked loop and the supporting circuitry of RTG board 5 1V_STBY Stand by 5 1 V Not used by RTG board Interlock and protection Input None Output The RTG will disable the Horizontal Deflection Board by placing a high on the H_ENABLE line during any of following events A During and about 2 seconds after the programming period of the FPGA B During frequency band change period During the period that the phase locked loop is out of lock 2 44 Model 200 Service Manual Chapter 2 System Description 2 3 8 Horizontal Vertical Deflection PCB The HVD board is located on the top side of the deflection cage in front of the electronic card cage The Horizontal Vertical Deflection Board I O diagram Figure 2 14 and the list of inputs and outputs Tables 2 10 and 2 11 provide information for the technician to perform module level troubleshooting The following functions are provided by the HVD board e Horizontal raster centering for all three colors e Horizontal gate drive e Switch mode power supply generating the required proportional DC supply e Horizontal width adjustment e Horizontal retrace switch network e Left right pincushion and keystone correction e Drive main deflection coils to provide horizontal raster scan for all three CRTs e Drive main vertical coils to provide vertical raster scan for all three CRTs e Vertical
87. of either the next horizontal line or field The beam is turned off during retrace Refers to the method of recording and generating colors in a video system On a television or color monitor colors are displayed as varying intensities of red green and blue dots When red green and blue are all turned on high white is produced When all dots are turned off the base color of the screen appears Assembly where the front and rear cover are hinged to Used to hold covers in place A high band video recording process for VHS that increases picture quality and resolution capability S VHS tape machines use a special output terminal which allows separate output of luminance Y and chrominance C picture information to monitors equipped with S Video inputs A video signal that has the luminance Y information separated from chrominance C information Glossary Saturated Color Scan Scan Line Scan Rate Synchronization Technician Remote Throw Underscan Vertical Height Pots Vertical Resolution Vertical Scan Frequency V Freq Vertical Scan Reversal Jumper Vertical Synchronization Frequency Xenon Arc Lamp 1 A color as far from white black or gray as it can be i e vermilion rather than pink 2 A display misadjustment that results in unnaturally bright colors To scan is to move across a picture frame a line at a time either to detect the image as in an analog or digital camera or to
88. of the other assemblies Be sure to have storage cabinets or tables to house the various items as they are removed to provide access to the Prism Assembly Allow about 3 4 hours to perform the removal and replacement of the Prism Assembly Refer to Figures 4 1 and 4 11 for the assemblies referenced in this procedure To remove the Prism Assembly 1 Remove front and rear covers Section 4 2 2 Remove the Optical Shield by removing the 3 screws holding it Remove the Arc Lamp air filter and cover 3 screws Remove the Arc Lamp Section 4 4 Remove the Lamphouse Dock Section 4 4 Remove the lower right side panel 5 screws N or Remove the X Plate Dichroic Mirrors assembly by removing the four hex bolts securing it see Figure 4 14 CAUTION Use care when lifting the mirror assembly Place it in a safe level storage area Model 200 Service Manual 4 21 Chapter 4 Maintenance Removal Replacement Figure 4 14 Dichroic Mirror Assembly 8 Remove the 2 hex bolts from the front of the Prism assembly see Figure 4 15 Ne ES amp N PA y PA ha A PA DI xi Figure 4 15 Prism Assembly mount 422 Model 200 Service Manual Model 200 Service Manual 10 11 13 14 Chapter 4 Maintenance Removal Replacement Remove the Rollbar assembly 2 pozidrive bolts nuts on left side and two nut
89. oller Board use a small flathead screwdriver and remove the screw in the bracket in the center of the System Controller Board this bracket holds the SCB to the card cage Grasp the bracket and pull out the SCB 4 When replacing boards verify that power is off at the circuit breaker the power plug is disconnected and there are no bent pins on any connectors Make sure the board is properly and securely seated before reapplying power NOTE To remove connectors on the printed circuit boards below push the connector in slightly then squeeze the tab and pull the connector out 4 9 Convergence Deflection PCB The Convergence Deflection PCB is located on the bottom side of the Electronic Module card cage To remove the Convergence Deflection PCB 1 Remove the rear cover Section 4 2 2 Tilt the Electronic Module up Section 3 3 3 Disconnect 6 connectors J31 J32 J33 J38 J39 and J40 Figure 4 6 Move the cables out of the way Model 200 Service Manual 4 11 Chapter 4 Maintenance Removal Replacement 4 12 o Figure 4 7 Convergence Deflection PCB 4 Loosen not necessary to remove the 5 screws that secure the Convergence Deflection PCB to the electronic module card cage see Figure 4 7 Remove the Convergence Deflection PCB by sliding it upward so the mounting screws will clear the access holes then angle the right side outward NOTE In order to get the right side out it may be necessary to first mo
90. oltages required for the three CRTs in the Model 200 projector The following functions are provided by HVPS e Phase locked loop circuit for synchronization to the horizontal sync e Generation of anode voltages 25 KV for all three CRTs RGB Model 200 Service Manual Chapter 2 System Description e Generation of focus voltage G3 for all three CRTs RGB e Generation of screen G2 supply Black Level voltage for all three CRTs e Generation of G1 supply Blanking voltage e Dynamic focus amplifier using H and V parabolas e External ON OFF and generation of HV_OK signal The High Voltage Power Supply I O diagram Figure 2 5 and the list of inputs and outputs Table 2 1 provide an understanding of the operation of the HVPS to allow the technician to perform module level troubleshooting J45 A HVPS_SYNC E 2 o n o B ANODE J60 1 a lt gt lt gt a HIGH o a 15v VOLTAGE BFOCUS J60 1 o K POWER o SUPPLY IHV ENA VA_OK From VPB H PARABOLA V PARABOLA FROM CD BOARD TO CRTS VIA VAB Figure 2 5 High Voltage Power Supply I O Diagram The HVPS Input Output This section provides a comprehensive description of the inputs to and outputs from the HVPS The I O descriptions are arranged by the source destination of the signal The format used is such that the assembly communicated with is used as the primary heading of each output Input refers to an input to
91. on the connector then squeeze the tab then pull the connector out Power off After turning power off with the remote wait until the Arc Lamp cooling fans have stopped running then toggle the projector circuit breaker on the rear panel to OFF and disconnect the power cord allow a discharge time of at least a minute for the high voltage to bleed off before removing the power plug NOTE While performing any maintenance procedures check the prism diaphragm for dryness crazing cracking or possible leaking If any problems are observed call HJT When references are made to assemblies or components in this chapter refer to Figures 4 1 and 4 11 for locations Model 200 Service Manual Horizontal Vertical Deflection PCB Convergence PCB Timing Generator Video Processor and Relay Lenses ILA s and Video Amplifier PCB Tilt Card Cage up for access Metal Framed Air Filter behind Grille Figure 4 1 Model 200 Service Manual Chapter 4 Maintenance Removal Replacement Optical Shield Shutter Motors Arc Lamp Air Filter and Cover Lamphouse Dock and Arc Lamp Lower Right Side A Y Panel Remove to LES ZA ee provide access to i AI ALPS and LVPS EMI Shield High Voltage Power Supply Low Voltage Power Supply Major components of the Model 200 Projector 4 3 Chapter 4 Maintenance Removal Replacement 4 2 Projector Covers Prior to removing either cover
92. onfiguration Data Export Import Procedure Rev 1 0 0 This appendix defines the steps to perform a Configuration Data Export amp Import from the Model 200 projector to a Host Computer The Host Computer can be any system that has RS232 download and upload capability including an IBM PC compatible an Apple MacIntosh or a UNIX system This paper describes the procedures for an IBM PC running the Windows 3 1 OS We will use the Windows TERMINAL application for communication with the projector Other Terminal emulation programs can be used ProComm but all testing has been done with the TERMINAL application Note 1 The TERMINAL application setup is the same as for controlling the projector via an ANSI TERMINAL see Model 200 User s Guide Section 4 11 Note 2 Export Import can be performed on either Port A or Port B The Port must be configured for ANSI Terminal Port A speed is determined by DIP SWITCH 4 on the System Controller board DOWN is 9600 baud UP is 19200 Baud Port B can be configured for 2400 9600 default or 19200 through the Comm Setup Menu If both Port A and Port B are ANSI Terminals PORT A must be used for Export Import so to use Port B set Port A Device None or Switcher Port B Device ANSI Remember to Power Off Control P and HW RESET Push RESET button figure 5 1 in Service Manual or Circuit Breaker on rear panel after changing any configuration parameters WARNING If you use 19200 Baud your co
93. ontrol of the projector The descriptions in this portion of the manual are based on an overall Electronics System block diagram and simplified block diagrams for each of the nine printed circuit assemblies The diagrams and descriptions serve two purposes first to provide the technician with an overall grasp of how the system works and how each assembly works with other assemblies in the system second to provide the technician with enough information to troubleshoot to the assembly level if needed Figure 2 2 provides an overall System Block Diagram to show how the Optical System Arc Lamp and Electronics System combine to provide the bright screen image LAMP NE MIRROR _ INTEGRATOR CONDENSING ai LENS VIDEO INPUT f CARDS VIDEO PROCESSOR RASTER TIMING GENERATOR SYSTEM CONTROLLER LAMP POWER SUPPLY LOW VOLTAGE POWER SUPPLY BACK PLANE UV FILTERS HIGH VOLTAGE CROSS DICHROICS CONVERGENCE DEFLECTION SCAN REVERSAL C PROJECTION LENS HORIZONTAL VERTICAL DEFLECTION OPTICS MODULE VIDEO AMPLIFIERS RELAY LENSES LA S ELECTRONICS MODULES Figure 2 2 Model 200 System Block Diagram Model 200 Service Manual 2 7 Chapter 2 System Description 2 3 2 Power Supplies The Model 200 includes three power supply assemblies e Low Voltage Power Supply e Arc Lamp Power Supply e High Voltage Power Supply Low Voltage
94. or selection of frequency of ILA bias circuit ILA_FREQ_N2 Data for selection of frequency of ILA bias circuit 2 52 Model 200 Service Manual Chapter 2 System Description 0 ILA_GRN_BIAS Data for adjustment of green ILA bias ILA_BLU_BIAS Data for adjustment of blue ILA bias pre scale counter pre scale counter LR_RED_SKEW Data for adjustment of red left right skew LR_GRN_SKEW Data for adjustment of green left right skew LR_BLU_SKEW Data for adjustment of blue left right skew LR_BOW Data for adjustment of left right bow HEIGHT Data for adjustment of height for all colors LR_KEY_ BAL Data for adjustment of left right keystone balance balance correction H_BLU_LIN Data for blue horizontal overall linearity Pe een Data for red horizontal edge linearity correction EDGE LIN H_BLU J Data for blue horizontal edge linearity correction _EDGE LIN RATS TP_RED_SKEW Data for adjustment of red top bottom skew LE Bees TP_GRN_SKEW Data for adjustment of green top bottom skew 8 TP_BLU_SKEW Data for adjustment of blue top bottom skew RE f8 TP_BOW Data for adjustment of top bottom bow ci ee TP_PIN Data for adjustment of top bottom pincushion TP_PIN_BAL Data for adjustment of top bottom pincushion balance Model 200 Service Manual 2 53 Chapter 2 System Description e pek Data for adjustment oftopbotiom reystone balance 1 RASTER_FIL Control line for the raster fill option low raster Convergen
95. oval 4160 Model 200 Service Manual Chapter 4 Maintenance Removal Replacement Three CRT Yoke Assemblies are located in the CRT Assembly area below the card cage To remove a CRT Yoke Assembly refer to Figure 4 11 Cable Harness CRT Yoke Assemblies Rollbar Bracket Metal Framed KILI lt A Video Amplifier Air Filter SLU S AE behind grille hy Air Filter on bottom Red ILA CRT Lens Stopper Ring Figure 4 11 View of CRTs Relay lenses and ILA Assemblies 1 Remove front and rear covers Section 4 2 2 Tilt the Electronic Module up and lock it in place Section 3 3 3 Remove the two pozidrive screws from the top of the High Voltage Power Supply HVPS cover Figure 4 5 and loosen the one screw at the bottom of the cover do not remove the bottom screw it is difficult to replace the HVPS will slide up and over it 4 Remove the CRT anode cable for the CRT that is to be replaced from the HVPS 5 Disconnect the Yoke plug and cable harness from the Scan Reversal PCB for the appropriate CRT see Figure 3 7 6 Remove the wires from the cable clamp for the CRT Yoke Assembly that is being removed 7 Loosen the CRT Holder Ring knurled knob in Figure 3 5 NOTE The CRT Holder Ring should be only hand tight If it cannot be removed by hand only a flathead screwdriver can be used in the slots on the CR
96. prism and transmitted through the projection lens to the projector screen The explanation below is divided into two sections The first section follows the image path from the CRT to the projector screen The second section follows the high intensity light path from the Arc Lamp Ignitor to the ILA assemblies where it combines with the image The Red Green and Blue image and light paths are identical Refer to Figure 2 1 o CAUTION The alignment of system optical components is critical Replacement of individual mirrors or prisms requires removing the projector cover and must be performed only by Hughes JVC Certified technicians Consult the factory before removing or aligning any mirrors or prisms 2 2 1 Image Path CRT Assemblies The three CRT Yoke assemblies are located beneath the Electronics Module card cage Two exhaust fans at the rear help cool the CRT assemblies Each CRT is sent a red green or blue signal but they do not emit a red green or blue color as in traditional projectors The CRTs are not used as a Model 200 Service Manual Chapter 2 System Description primary light source The light output to the screen is the function of the Arc Lamp The purpose of the CRTs is to generate an image and to control the amount of modulation the ILA assemblies introduce on the light coming from the Arc Lamp The Red Green and Blue image signals are routed to the CRTs from the Video Amplifier Board through the CRT socket
97. r RTG board INPUTS DESCRIPTION H_ENABLE A low on this line enables horizontal deflection A high disables the horizontal amplifier H_BAND 0 Horizontal frequency band line 000 band A 001 band B 011 H_BAND 1 band C and 111 band D H_BAND 2 HF_2V Horizontal frequency to voltage converter a DC signal proportional to horiz frequency About 4 2 V at 90 kHz H_DRIVE Horiz drive pulse 50 duty cycle HCT level signal Model 200 Service Manual 2 49 Chapter 2 System Description 80 V 80 V supply for use by the switching supply of horizontal deflection amplifier 2 50 Interlocks and protection Input None Outputs H_LOCK and H_LOCK Used to shut down the switching power supply of the horizontal deflection amplifier in the event of a loose yoke or loose scan reverse connector This prevents the power supply section of the Horizontal Vertical Deflection Board from operating when 1 or more yoke connectors are disconnected SWEEP_OK Shuts down the video amplifiers in the event of deflection failure if DEFL_OK or H_ENABLE are not present Model 200 Service Manual Chapter 2 System Description 2 3 9 Convergence Deflection PCB The Convergence Deflection Board is located on the bottom side of the card cage under the Horizontal Vertical Deflection Board This board drives the convergence coils of the projectors The following functions are provided by C D Board Generation of various wavefo
98. r and wipe the lens clean ina vertical motion from top to bottom Use compressed air to blow excess dust from the lens An optical lens cleaning solution can also be used to remove finger smudges ILA Assembly Clean the ILA assembly faces with compressed air only Do not wipe the ILA assembly faces CRT Faces Use compressed air to blow dust off and lens paper to clean face Relay Lens Same as Projection Lens Mirrors and Polarizing Beam Splitter Windows The Optical Shield covers the Dichroic Mirror Assembly X Frame and Polarizing Beam Splitter windows Normal cleaning is not required Clean only if absolutely necessary using compressed air Do not wipe mirrors Model 200 Service Manual Chapter 4 Maintenance Removal Replacement 4 0 Maintenance Removal Replacement Contents 451 Inodoro ihih 4 1 4 2 ProjectorCovers uir iaia 4 4 43 AIF as 4 5 44 Are Lamp Assemblyi cuoio iii ia 4 5 4 5 Arc Lamp Power Supply 4 8 4 6 Low Voltage Power Supply iii 4 8 4 7 High Voltage Power Supply 4 8 4 8 Raster Timing System Controller Video Processor PCBs 4 10 4 9 Convergence Deflection PCB ccccccessseecceeeeeeeeeseeeeeeenees 4 11 4 10 Horizontal Vertical Deflection PCB n 4 12 4 11 Video Input Cards VICOS cooomioococinccnonnsinacicacnccnn nana adan 4 13 4 12 Video Amplifier POB 2 ccccc cc ccceienctuensanctenecdaaectehaindeetaessseee 4 14
99. r to continue Esc to abort 12D At this point the system has verified that the load module is correct and is ready to update the Flash memory Press Enter to perform the update Esc will abort the update process with no changes While the Flash is being updated approx 15 30 seconds DO NOT turn off the projector circuit breaker this may make the machine unbootable requiring a new set of flash chips to be installed When the update is complete the system will display the following Reprogramming Flash Sector 2 3456789 System software update successful Command _ The software update is complete To restart the projector type in the reboot command and press Enter The projector will now restart with the updated System Software 3 12 Cleaning Lenses ILA Assemblies and Mirrors The projection lens is the only item that will require periodic cleaning The other assemblies are covered to prevent dust from entering or finger smudges Cleaning may be needed due to special circumstances such as replacing the assembly or an adjacent assembly Cleaning should only require removing excessive dust use canned compressed air such as Office Duster or Aero Duster or removing fingerprint smudges use Kodak Lens paper or equivalent from the projection lens As much as possible clean the optics only when absolutely necessary Model 200 Service Manual 3 17 Chapter 3 Service Adjustments Projection Lens Use lens pape
100. re sent back together as part of the Lamphouse Dock Model 200 Service Manual 4 5 Chapter 4 Maintenance Removal Replacement SG 9 AN 2 WARNING Dangerous light exists in this area of the projector Before proceeding with the removal of any subassemblies below verify that the circuit breaker at the rear of the projector is turned off and the power plug is removed from the AC outlet To remove the Arc Lamp from the Lamphouse Dock 1 Remove the front cover Section 4 2 2 Disconnect the fan connector from the Arc Lamp exhaust fan 3 Loosen turn the large retainer screw at the bottom of the Arc Lamp assembly cover Figure 4 3 Figure 4 3 Arc Lamp cover 4 Lift the Arc Lamp assembly cover up and tilt it back 5 Remove and label the two Arc Lamp cables at the Ignitor side these two connections are shown inside the heavy circles in Figure 4 4 Leave these cables connected to the Arc Lamp when returning it to the factory 6 Loosen the three Arc Lamp holding bolts Figure 4 4 Model 200 Service Manual Chapter 4 Maintenance Removal Replacement A AR 7 Figure 4 4 Lamphouse Dock and Arc Lamp with cover off 7 When reinstalling the Arc Lamp be sure that the Safety Shutter tab on the left side Figure 4 4 engages the left side of the housing so that the Arc Lamp cooling door opens when the Arc Lamp is installed After reinstalling the Arc Lamp perform the Arc Lamp Focus Alignmen
101. refers to an output from the VIC Table 2 6 Quad Standard Decoder VIC Signals Projector Inputs INPUT DESCRIPTION Composite V Video input signals about 0 7 to 1 VPP S Video Video input signal about 0 7 to 1 VPP for Luminance and about 3 6 VPP for Chrominance Burst Video Processor Board OUTPUT DESCRIPTION SELECT Selection indicator for VIC Low indicates the Quad VIC is selected RED Video signals about 0 7 to 1 VPP GRN BLU Horizontal vertical sync signals about 1 1 25 VPP System Controller Board INPUTS DESCRIPTION IIC_CLK IIC clock line Unidirectional clock line for control of synchronous data transfer over the IIC bus interface IIC_DATA IIC data line Bidirectional serial line for synchronous data transfer between System Control Board and the VIC 2 22 Model 200 Service Manual Chapter 2 System Description Low Voltage Power Supply 5 1 V supply for use by The Quad Decoder VIC 15 V supply for use by the Quad Decoder VIC Interlocks and protection None Model 200 Service Manual 2 23 Chapter 2 System Description 2 24 2 3 4 Video Processor PCB The Video Processor Board VPB is the bottom most card see Figure 5 1 in the card cage It is connected directly to the Backplane board through 2 connectors When an external signal is being received the VPB provides Horizontal Sync Vertical Sync and Green Sync signals to the Raster Timing Generator RTG board It also provides three p
102. resistant level surface or ceiling mount in an area free from dust and moisture Do not place the equipment in direct sunlight or near heat radiating appliances Smoke steam and exposure to direct sunlight could adversely affect the internal components If mounting the projector use hardware that can handle a minimum of three 3 times the projector weight Heat Safeguards Fans and Ventilation The projector has multiple fans to cool the system Do not block the intake or outflow of any fans Heat is emitted within the system and must be properly dissipated to keep the system running correctly Blocking air intake or exhaust ports can lead to projector overheating Do not enclose the unit in a restricted space refer to the physical access and thermal clearance illustration guidelines Wo Model 200 Service Manual Safety Information CAUTION Do not unplug the power cord until after the arc lamp fan has stopped running This fan protects the arc lamp from overheating Disconnecting power before the cooling fans have stopped running can shorten Arc Lamp life Light Safeguards Ultra Violet and Infrared Light Eye and face protection from ultra violet light and infrared light in accordance with the following conditions 1 X3 up to 375 nanometers ANSI approved shade goggles must be worn by anyone near the projector when it is lit and the cover is off 2 X5 375 to 700 nanometers ANSI approved shade goggles when actuall
103. review the chapter on Safety and adhere to all warnings and cautions Interlock Switch Pull up immediately after removing front or rear cover to reapply power to Arc Lamp cooling fans Holding Slots gt Latch Levers Figure 4 2 Rollbar Assembly To remove the front or rear covers refer to Figure 4 2 1 Disconnect the projector power plug 2 Loosen the two pozidrive spring screws at the front of the front cover or the rear of the rear cover 3 Tilt up the front or rear cover o CAUTION Do not leave either cover tilted up The covers can fall from this tilted up position and possibly damage projector components Remove the cover and set it aside when servicing the projector 4 Release the two Latch Levers on the Rollbar assembly that hold the cover in place Place the ends of the Latch Levers into the holding slots CAUTION Immediately after removing the front or rear cover pull up the power interlock switch This allows power to be reapplied to the fans to cool the Arc Lamp 440050 2 Model 200 Service Manual Chapter 4 Maintenance Removal Replacement The power interlock switches for both covers are attached to each cover hinge 5 When the Latch Levers are inserted into the holding slots lift the cover off Be careful not to brush against any of the internal components of the projector when removing the cover If any undue resistance is felt stop to locate the source before proceeding
104. rimary color signals and G2 G1 bias and DC RESTORE control signals to the Video Amplifier Board VAB The following functions are provided by the VPB e Video signal input and multiplexing e Sync signal stripping e Overlay signal multiplexing e Brightness and Contrast control and DC RESTORE e Video signal gamma correction e Sensitivity and Threshold signal input and control e Automatic limiting for Contrast G2 and internal video The Video Processor I O diagram and the list of inputs and outputs provide information to allow the technician to perform module level troubleshooting Model 200 Service Manual Chapter 2 System Description RED_VIC 1 J16 RED_VIC 2 RED_VIC 3 GRN_VIC 1 x To GRN_VIC 2 GRN_SYNQ B17 RTG CONE GRN INPUT azs EXTERNAL UNICA VIDEO BLU_VIC 3 H_VICHI H_VIC 2 H_VIC 3 RED_VIDEO B2 TO V VICH GRN_VIDEO B4 V_VIC 2 BLU VIDEO B6 VAB V VICHES SEL_VIC 2 SEL_VIC 3 VIDEO J16 ORA PROCESSOR FROM ps sn OVER BOARD SCB OVERLAY CLAMP FROM RIG BLANKING TO RESTORE B16 VAB IRED_SENS IGRN_SENS FROM BLU SENS SCB RED THRESH IGRN_THRESH IBLU_THRESH RED_BEAM A FROM IGRN_BEAM E TO BLU_BEAM VAB TO VAB VA OK HV_ENA G1_BIAS A11 IIC_CLK TIC_DATA Figure 2 10 Video Processor l O Diagram IIC Interface The VPB communicates with the SCB via the IIC bus The information transferred over the bus as shown in Table 2 6 is indicated as follows Input to the VPB
105. rms for the horizontal and vertical axes Height control Generation of waveforms for dynamic focus Various geometry correction functions for the horizontal and vertical axes Convergence output amplifiers for all colors and both horizontal and vertical axes Convergence enable and raster fill function ILA assembly driver circuitry with temperature compensation Phase locked loop for ILA assembly drivers IIC serial bus interface The Convergence Deflection Input Output diagram Figure 2 15 and the list of inputs and outputs Tables 2 12 and 2 13 provide information for the technician to perform module level troubleshooting Model 200 Service Manual 2 51 Chapter 2 System Description lIC_CLK SCB IIC_DATA IC_SINT GRN_ILA J31 BLU_ILA X_RED_CONV FROM X_GRN_CONV SCB X_BLU_CONV Y_RED_CONV Y_GRN_CONV Y_BLU_CONV CORR_SYNC CONVERGENCE V_DRIVE DEFLECTION BOARD J33 Figure 2 15 Convergence Deflection Board I O diagram IIC interface Adjustments for this board are performed by the System Controller via the IIC serial bus interface This three wire bus interface consists of a clock line a data line and an interrupt line The C D Board does not create any IIC interrupt The following table lists all adjustments performed via the IIC bus interface Input to C D Board O Output from C D Board Table 2 12 Convergence Deflection IIC communication Input Output Description ILA_FREQ_N1 Data f
106. rol of synchronous data transfer over the IIC bus interface IIC_DATA IIC data line Bidirectional serial line for synchronous data transfer between system control board and the YPbPr_VIC OUTPUTS DESCRIPTION NC_INT IIC interrupt line YPbPr_VIC does not initiate any interrupt 5 1 V supply for use by YPbPr_VIC 2 20 Interlocks and protection Inputs None Outputs None Quad Standard Decoder VIC The Quad Standard Decoder VIC is composite and S Video interface It contains three BNC input connectors for Composite Video and S Video luminance and chrominance This decoder VIC converts these color component signals to RGBHV type video signals The following functions are provided by the Quad Standard Decoder VIC e Select input source Composite or S video e Select standard AUTO NTSC PAL SECAM 4 43NTSC e Conversion of composite and S video signals to RGB video signals e Separation of syncs from the input signal Model 200 Service Manual Chapter 2 System Description e Tint sharpness and color adjustment e LED indication of Composite or S video e IIC serial bus interface Comp R Yin G Cin B IH N HC_CLK IIC_DATA 5 1V ISELECT 15V Pin callouts are to P12 P14 or P18 depending on which VIC slot is being used Figure 2 9 Quad Standard Decoder I O Diagram LED Indication There are two LEDs on this VIC The LED on the right side of the board glows when Composite Video is selected and th
107. rom the Arc Lamp or the projection lens at all times 1 2 Updates Hughes JVC will periodically provide bulletin and or manual supplements to ensure the accuracy of this service manual 1 3 Tool List The following tools are required to perform service adjustments All Purpose Tools Diagonal Sidecutters Wirestrippers Slot Adjustment Screwdriver Tweeker Mirror Magnet Pick Up Tool Flashlight 6 Crescent Wrench Needlenose pliers 6 Vise Grips Balldriver 1 5mm Balldriver 3mm Balldriver 3mm Long Balldriver 4mm Balldriver 5mm Long T handle Balldriver 6mm Model 200 Service Manual 1 1 Chapter 1 Introduction Balldriver 8mm Ballpoint L Wrench Set 1 5 5mm Delrin 100 Hex Alignment Tool Gloves ANSI ASTM 10 000 volt rated Safety Goggles Safety x3 covers on and x5 covers off Hex Ballpoint Driver 3mm Hex Ballpoint Driver 5mm Nutdriver 10mm Nutdriver 11mm or 7 16 Nutdriver 5mm Nutdriver 7mm Nutdriver 8mm Screwdriver Phillips 1 Screwdriver Phillips 2 Screwdriver Pozidrive 1 Screwdriver Pozidrive 2 Screwdriver Slot Screwdriver Slot Y Screwdriver Slot 3 16 Socket Y4 drive 7mm deep 1 4 Acronyms Used in this Manual ALPS Arc Lamp Power Supply CDB Convergence Deflection Board CH Channel CPU Central Processing Unit CRT Cathode Ray Tube EMI Electromagnetic Interference FLASH Erasable Programmable Read Only Memory EPROM FPGA Fiel
108. round wire into the CRT Socket Connector first then partially plug in the Green socket connector into the CRT When the CRT is completely installed it will be easier to fully insert the CRT into the socket connector Perform a CRT Mechanical focus adjustment Section 3 5 and CRT Rotation Section 3 6 after replacing the CRT Yoke Assembly Check the CRT Mechanical Focus on the other two colors to verify that they are still correct It is possible the other focus adjustments could have been disturbed by the removal and replacement of the CRT Yoke Assembly 4 15 ILA Assembly To remove an ILA Assembly 1 2 3 Remove the rear cover Section 4 2 Tilt up the Electronic Module Section 3 3 Disconnect the connector on the top of the appropriate ILA assembly Figure 4 11 Model 200 Service Manual Chapter 4 Maintenance Removal Replacement Figure 4 12 ILA Assembly top view The overlap screws shown are 4 visible after the ILA assembly is removed Loosen the two wingnuts at the top of the appropriate ILA assembly Figure 4 12 Slide the spring clip at the top of the ILAS assembly backward Figure 4 12 This will free the ILAS assembly Grasp the ILAS assembly by its housing and slide it out Replace the ILA in the reverse order from above Recheck convergence shading ILA bias and G2 and readjust if necessary User s Guide Sections 5 8 5 10 5 7 5 9 Recheck
109. ry hot Ultraviolet Filter Dichroic Mirror Assembly Prisms Combining Prism Image Mirrors and the Zoom Projection Lens The Arc Lamp Assembly section is located in the right front area of the unit It contains the Ignitor Laser Power Supply Xenon Arc Lamp and Elliptical Reflector Chapter 2 System Description e The Power Supply Section is located at the right front area of the projector below and to the rear of the Arc Lamp It contains the Low Voltage Power Supply the High Voltage Power Supply and the Arc Lamp Power Supply e The Projector Electronics Section is located mainly in the back half of the projector It consists of the Electronics Module that houses 6 of the electronics printed circuit boards used in the projector and their associated cabling It also contains the Backplane board which is used to electrically interconnect the printed circuit boards power supplies and various other units in the projector and the Video Input Cards that interface with different kinds of input signals e The CRT Section is located beneath the electronics card cage and contains the 3 CRTs 3 Relay Lenses 3 ILA s and the Video Amplifier Board 2 2 Optical System Introduction The Model 200 Optics Assembly divides white light from the Arc Lamp into its three color components Red Green and Blue This light is then modulated with the image signal to form three single color images The light is then recombined at the 4P combining
110. s can cause severe shock from a tiny invisible crack or hole and should never be touched while projector power is on CRT anodes Main power supply posts Arc Lamp main power posts CRT yoke assemblies and other proximity electrical assemblies components and wiring If performing the ILA Back Focus CRT Mechanical Focus CRT rotation or ILA Overlap adjustment as outlined in Chapter 3 always use an ANSI ASTM 10 000 volt rated glove Periodically check the condition of the gloves for cracks Power Supply The projector operates from a 100V 240V 20 Amp single phase 50 60 Hz AC power source Ensure local power source matches these requirements before operating For continued safe and reliable operation only use cables supplied by the manufacturer for power and signal connections Fluid Safeguards viii Certain components of the projector contain fluid If any fluid from the projector contacts the skin wash off with soap and water If any fluid from the projector splashes into the eyes rinse with cool running water Model 200 Service Manual Safety Information Ventilation and Foreign Object Retrieval CAUTION Ensure projector s multiple fans are free from obstructions and operating properly Air filters are located at vent ports on the cover Air filters require periodic cleaning to ensure adequate cooling of the projector Section 4 3 Ensure that all vent ports are clear of obstructions Keep the ins
111. s into convergence 3 12 Model 200 Service Manual Chapter 3 Service Adjustments Vertical height pots Figure 3 8 Horizontal Vertical Deflection Board To adjust the Vertical height see Figure 3 8 Remove the rear cover Section 4 2 1 Select Test Pattern 5 X hatch NOTE Green is the master to which Red and Blue will be matched The Green height pot should not need adjustment except when the Green CRT assembly has been replaced Hide Blue and view Red and Green If Red is higher than Green at the top and lower than Green at the bottom of the X hatch image or If lower than Green at the top and higher at the bottom adjust Red vertical pot to correct the error If Red is higher than Green at the top and bottom or lower than Green at the top and bottom this is most likely caused by Red not being centered correctly and can be corrected with the centering adjustment User s Guide Section 5 5 11 If the Red height pot does not completely eliminate the difference in height between Red and Green balance the error at the top and bottom Too much of an error at the top or bottom makes convergence procedures harder to accomplish Repeat Steps 2 and 3 above for Blue while hiding Red Recheck all Geometry and Convergence settings see User s Guide and readjust wherever necessary Model 200 Service Manual 3 13 Chapter 3 Service Adjustments To adjust the horizontal size coils see Figure 3 7 1 Continue to use
112. s on right side Disconnect and label the 2 connectors on the hinge assembly for the shutter motors 1 in front and 1 in rear Remove and label the jumper that connects the front interlock switch to the rear interlock switch Remove the Rollbar Bracket that was holding up the left side of the Rollbar assembly Remove the 3 ILA asssemblies Section 4 15 12 Remove the remaining three hex bolts from the rear of the Prism assembly These screws are located in the cavities where the ILA assemblies were removed see Figure 4 15 The Prism is now free to be removed A CAUTION the Prism assembly is heavy about 70 Ibs Use two people to lift it out of the projector Replace the Prism assembly in the reverse order 4 23 Chapter 4 Maintenance Removal Replacement 42600 GB Model 200 Service Manual Chapter 5 Troubleshooting 5 0 Troubleshooting Contents 5 1 Status LEDS uan 5 1 5 2 Error Codes e 5 4 5 3 Troubleshooting Guide 5 5 5 1 Status LEDs The illustrations below indicate where various LEDs are located that indicate proper or improper operation of the System Controller the Raster Timing Generator the Video Processor Board the Scan Reversal Board the Convergence Deflection Board the Video Amplifier Board the Low Voltage Power Supply and the High Voltage Power Supply a A A 0 o VA o o o ES 5 N Figure 5 1 Projector rear with cov
113. sconnect J71 AC Input Disconnect J72 SIGNAL CABLE Remove J73 Remove the 2 screws at the bottom of the ALPS and carefully slide it out of the projector Replace the Arc Lamp Power Supply in reverse order from above NOTE When replacing the cables on the terminals on J74 a mechanical pickup tool is very useful to start the screws Perform the Arc Lamp Focus Alignment and Current Setting procedures as shown in Section 3 1 and 3 2 4 6 Low Voltage Power Supply To remove the Low Voltage Power Supply 1 2 Remove the front cover Remove the lower right side panel by removing the 5 pozidrive screws securing it Remove the 2 pozidrive screws securing the EMI Shield Slide the shield to the left and remove it Remove J76 DC Output and J75 AC Input from the left side of the Low Voltage Power Supply NOTE These connectors may be difficult to remove and it may be necessary to angle the LVPS partly out of the chassis in order to get a firmer grip on the connectors Remove the 2 screws on the bottom side of the LVPS and carefully slide it out of the projector Reinstall the LVPS in reverse order After the LVPS is installed recheck Timing Geometry Electronic Focus ILA Bias Sensitivity Convergence G2 and Shading 4 7 High Voltage Power Supply To remove the High Voltage Power Supply Model 200 Service Manual Chapter 4 Maintenance Removal Replacement 1 Remove the front and rear covers Section 4
114. scription Table 2 4 HDTV VIC IIC Interface uo Bis information Description 1 SEL_YPbPr Selects YPbPr input mode for the YPbPr_VIC NT eee 1 SEL_RGB Selects RGB input mode for the YPbPr_VIC ee ae ee eld a Gavin Data foradusimentof Gamma corecion _ 8 coor petatoraciusmentoteioe 8 He Datatoraciusimentotnue _ 1 8 SHARPNESS Data tor adjustment or sharpness O vem viGieenicaion ines 0001 for YPBPVIC 1 YPbPr_OK YPbPr_VIC status line Low operational YPbPr_VIC The HDTV YPbPr_VIC I O This section provides a comprehensive description of the inputs to and outputs from the YPbPr_VIC The I O descriptions are arranged by the source destination of the signal The format used is such that the assembly communicated with is used as the primary heading of each group of signals Those signals are further subdivided into inputs and outputs Input refers to an Input to the YPbPr_VIC output refers to an output from the YPbPr_VIC Table 2 5 HDTV VIC Signals Projector Inputs INPUT DESCRIPTION Video input signals about 0 7 to 1 VPP Video Processor Board OUTPUT DESCRIPTION SELECT Selection indicator for VIC Low indicates the selected YPbPr_VIC Video signals about 0 7 to 1 VPP Model 200 Service Manual 2 19 Chapter 2 System Description Composite horizontal vertical sync signal System controller board INPUTS DESCRIPTION IIC_CLK IIC clock line Unidirectional clock line for cont
115. so be used for adjustment To adjust the CRT Mechanical Focus 1 2 3 3 Remove the rear cover Section 4 2 Tilt the Electronic Module to the upright position Section 3 3 Select the Focus test pattern Zoom the Projection Lens to the widest angle largest image and adjust the Projection Lens focus for the sharpest image of the Focus test pattern Tilt the Electronic Module up Section 3 3 Loosen the two set screws Figure 3 5 near the top of the CRT sleeve Loosen the CRT focus lock screw located on the Guide Plate at the top of the CRT shield Figure 3 5 The CRT is now free to slide Grasp the CRT thumbscrew Figure 3 5 and slide the CRT back and forth until the image is focused as sharply as possible be careful not to loosen the CRT thumbscrew which could cause the CRT to rotate Tighten the set screws first then the CRT focus lock screw NOTE Tighten set screws before focus lock screw The focus lock screw can slightly defocus or rotate the CRT as it is being tightened if the set screws are loose Repeat the above steps for the Red and Blue CRTs Model 200 Service Manual 3 7 Chapter 3 Service Adjustments CRT Holder Ring 5 A Focus Lock l Screw Guide Plate CRT Thumb Screw CRT Shield SAN AAS Figure 3 5 CRT Mechanical Focus adjustments 3 6 CRT Rotation The CRT tilt adjustment aligns the CRT level with the screen This is a factory set adjustment and shoul
116. ssembly backward and remove the ILA assembly it will slide out with some resistance There are two adjustment screws at the bottom of the ILA assembly which allow for up and down movement Turn these screws in or out very slightly to allow the ILA to seat lower or higher whichever is needed Reinstall the ILA assembly and replace the spring clip Repeat Step 4 if adjustment is still needed Retighten the 2 wing nuts Reset the ILA biases to their previous levels from Step 2 3 9 Front Rear or Inverted Projection Jumper Settings 3 9 1 Front Rear Jumper Setting Horizontal Reverse The Horizontal Scan Reversal Jumper reverses the image projection for front or rear projection Figure 3 7 illustrates the jumpers location on the Scan Reversal Board and the proper location for front and rear projection The projector is shipped with the jumper plugs inserted in J50 and J100 for front projection For a rear projection setup these jumpers must be inserted into JA50 and J101 HORIZ SIZE COILS Figure 3 7 Scan Reversal Board To set the Horizontal Scan Jumper 1 Turn power off at the projector and wait for the arc lamp to cool Model 200 Service Manual 3 11 Chapter 3 Service Adjustments Remove the projector rear cover Section 4 2 3 Verify that the jumper is plugged into JA50 and J101 for rear projection or J50 and J100 for front projection See Figure 3 7 Change jumper if necessary Replace the pro
117. t Filter The arc lamp light beam passes through the Condensing Lens to the Cold Mirror and Infrared Filter which removes most of the IR light then through the Ultraviolet filter which removes most of the UV light The light beam then proceeds toward the Dichroic Mirror Assembly In this manner most of the IR and UV light is filtered out before the light beam enters the more sensitive portions of the optics leaving only the visible portion Dichroic Mirror Assembly The condensed and filtered white light beam enters the Dichroic Mirror Assembly which separates dichroic mirrors reflect only one color and pass all others the Model 200 Service Manual Chapter 2 System Description light into its Red Green and Blue components The first mirror in the Dichroic Mirror Assembly reflects blue light to the blue ILA assembly the second mirror reflects green light to the green ILA assembly and the third reflects red light to the red ILA assembly Thus each ILA is sent only one color of light Prepolarizers and Polarizing Prisms Each individual light beam is polarized directed toward its own Polarizing Prism where it is directed toward the output side of its ILA Assembly and combined with the signal from the input side of the ILA Assembly Each of these three light beams independently combine with the image in their own Red Green or Blue color systems at the ILA assemblies as described in Section 2 2 1 Image Path Model
118. t and Current Setting procedures as shown in Sections 3 1 and 3 2 To remove the Lamphouse Dock Ignitor and Laser PS Model 200 Service Manual 1 Remove the Arc Lamp as shown in the above procedure Store the Arc Lamp in a safe place Remove the 5 pozidrive screws securing the projector s lower right side panel Figure 4 1 and remove the panel Disconnect the fan connector from the Arc Lamp cooling fan Disconnect and label the positive and negative cables from the Arc Lamp Power Supply terminals marked DC OUTPUT Figure 3 3 Remove the Arc Lamp Air Filter and cover by removing the 3 pozidrive screws that secure it to the Lamphouse Dock Assembly Remove the 3 hex screws at the inside rear of the Lamphouse Dock 1 on top and 2 on bottom The Lamphouse Dock is now free to return for repair Replace the Lamphouse Dock in reverse order NOTE When replacing the Lamphouse Dock be sure the 2 pins on the Collimator Lens line up with the holes on the rear of the Lamphouse Dock Chapter 4 Maintenance Removal Replacement 4 5 Arc Lamp Power Supply To remove the Arc Lamp Power Supply 1 2 NO 91 10 Remove the front cover Section 4 2 Remove the lower right front side panel by removing the 5 pozidrive screws securing it Remove the 2 pozidrive screws from the bottom of the EMI shield and slide it out of the way to the left Remove and label the cables from the DC OUTPUT terminal J74 Di
119. the HVPS Output refers to an output from the HVPS In each case the signals direction is noted Table 2 1 High Voltage Power Supply I O signals Raster Timing Generator PCB INPUT DESCRIPTION Model 200 Service Manual 2 11 Chapter 2 System Description HVPS_SYNC Square wave HCT level with 50 or 33 duty cycle synchronized to horizontal sync Video Processor PCB INPUT DESCRIPTION HV_ENA The HVPS enable line A low enable the HVPS VA_OK from VPB Video Amplifier PCB OUTPUTS DESCRIPTION G1_SUPPLY DC supply about 150 V for driving the G1 of CRTs G2_SUPPLY DC supply about 1 3 KV for driving the G2 of CRTs ARC_GND Return ground line for the CRT anodes Convergence Deflection PCB INPUTS DESCRIPTION Horizontal parabola for use by the dynamic focus amplifier PARABOLA Vertical parabola for use by the dynamic focus amplifier PARABOLA System Controller PCB OUTPUT DESCRIPTION HV_OK The high voltage status line Low operational HVPS Low Voltage Power Suppl DESCRIPTION 15 V for use by the HVPS 80 V for use by the HVPS INPUTS 15V 80V 15V for use by the HVPS a 2 12 Model 200 Service Manual Chapter 2 System Description OUTPUTS DESCRIPTION RED_ANODE Anode supply for the three CRTs About 25 KV GRN_ANODE BLU_ANODE RED_FOCUS Focus voltage for the three CRTs About 7 KV GRN_FOCUS BLU_FOCUS Interlocks and protection This section describes the interactions
120. the ILA Back Focus Section 3 4 and the ILA Overlap adjustment Section 3 8 4 16 Relay Lens To remove a Relay Lens refer to Figure 4 11 Model 200 Service Manual Remove the rear cover Section 4 2 Tilt up the Electronic Module Section 3 3 Remove the corresponding CRT Assembly behind the Relay Lens that is to be removed Loosen the CRT Lens Stopper Ring the thin collar just in front of the CRT Holder knurled ring Figure 4 11 and slide it off the back of the Relay Lens 4 19 Chapter 4 Maintenance Removal Replacement 5 Loosen the wing nut on top of the Relay Lens mount the bracket at the rear of the Relay Lens 6 Remove the 2 long hex bolts at the front of the Relay Lens shown in Figure 4 12 7 Remove the 2 hex bolts at the rear of the Relay Lens these bolts are level with the bottom of the Relay Lens and hold the bracket in place 8 Remove the Relay Lens Leave the Relay Lens Bracket and the CRT Lens Stopper Ring in the projector do not send them back with the Relay Lens 9 Replace the Relay Lens in reverse order from above 4 17 Projection Lens To remove the Projection Lens 1 Remove the sponge cover from around the front of the Projection Lens 2 Disconnect and label the Projection Lens Focus and Zoom motor cables The Focus motor is at the top of the Projection Lens The Zoom motor is at the bottom 3 Loosen do not remove the hex locking screw at the right side Figure 4 13
121. the entire zoom range The spacer balls may go slightly out of focus in spots while zooming up or down but they should be in focus at the smallest and largest images Tighten the hex bolts on the Green ILA Assembly and the wing nut on the Green Relay Lens Repeat Steps 6 11 above for any other assembly needing ILA Back Focusing Be sure to hide the other 2 colors NOTE The CRT Mechanical Focus procedure Section 3 5 is often performed sequentially with the CRT Rotation procedure Section 3 6 The same two set screws Figure 3 5 are loosened when doing either of these procedures When performing the procedures in sequence ensure the two set screws are secure when either the focus lock screw or the CRT thumbscrew is tightened after finishing each adjustment Do not leave the set screws loose when securing either the focus lock screw or the CRT thumbscrew Turning Model 200 Service Manual Chapter 3 Service Adjustments either one of these adjustments while the set screws are loose may cause the CRT to go out of focus or rotate 3 5 CRT Mechanical Focus The CRT Mechanical focus is factory set and will not normally require adjustment When a CRT is replaced the CRT mechanical focus must be reset Adjust colors individually After completing recheck other colors for additional adjustment Replacing the CRT could cause other colors to become misadjusted Use the Focus test pattern an external signal or other test patterns can al
122. to the screen It consists of a Xenon Arc Lamp containing xenon gas under pressure an ignitor assembly that provides the spark to light the arc lamp and a laser power supply to provide the boost voltage to the Ignitor An exhaust fan helps keep the arc lamp cool The description below follows the sequence of the light path See Figure 2 1 Ignitor and Laser Power Supply The Laser Power Supply provides a boost voltage through a spark gap to the Ignitor circuit which then provides a momentary High Voltage 32 000 volts to excite the xenon gases inside the Xenon Arc Lamp After the arc lamp ignites it is maintained ON by high current and low voltage approximately 37 5 amps and 20 volts The arc lamp Ignitor and Laser Power Supply are mounted next to the arc lamp inside the Arc Lamp assembly housing WARNING The Xenon Arc Lamp produces high intensity white ultraviolet and infrared light capable of severe eye injury Never look directly at or touch the Xenon Arc Lamp Service should be performed by Hughes JVC certified technicians only Xenon Arc Lamp Condensing Lens High pressure ionized xenon gas supports a high current electrical arc to produce the intense white light used in the Model 200 projector The high intensity light output from the Xenon Arc Lamp is reflected by an elliptical metal reflector to a Condensing Lens where the light beam is condensed and directed to the Cold Mirror Cold Mirror IR Filter and Ultraviole
123. ve the board out enough to clear the access holes then angle the left side out just enough for the top 2 fins of the heat sync to fit over the electronic module frame lip this will allow a little more clearance for the right side to be removed then maneuver the right side out Reinstall the Convergence Deflection PCB by lowering the right side in first until it clears the electronic module edge then lowering the left side in NOTE it may be necessary to fit the top 2 fins of the heat sync over the electronic module frame lip at the left to get enough clearance for the right side to be installed Carefully fit the board over the mounting screws and slide the board into position Tighten the screws and reconnect the connectors 4 10 Horizontal Vertical Deflection PCB The Horizontal Vertical H V Deflection PCB is located in the upper portion of the Electronic Module card cage To remove the Horizontal Vertical H V Deflection PCB Remove the rear cover Section 4 2 Model 200 Service Manual Chapter 4 Maintenance Removal Replacement 2 Disconnect 6 connectors J34 J35 J36 J41 J42 and J43 see Figure 4 8 Move the cables out of the way 3 Loosen not necessary to remove the 5 pozidrive screws that secure the H V Deflection Board to the electronic module cage 4 Remove the H V Deflection PCB by sliding it toward the left side of the projector this is the upward direction if the electronic module is raised up
124. y working on the projector near the arc lamp source WARNING BRIGHT LIGHT Never look directly at the Arc Lamp the lighted Projection Lens or into the lamp housing from any distance when the projector is on Direct exposure to light of this brightness can cause severe eye injury Dangerous levels of ultraviolet and infrared radiation dangerous glare very high temperatures 180 C to 300 C and high internal gas pressure are present at the Xenon Arc Lamp The lamp is contained in a protective reflector housing module and should not be operated outside this housing or outside of the projector When replacement is needed the arc lamp must be replaced as an entire module as shown in this Model 200 Service Manual Do not open the lamp housing or attempt to replace the Arc Lamp inside its module Do not touch the Arc Lamp or any connections when the lamp is ignited or is arcing Any servicing of the Arc Lamp must remain restricted to Hughes JVC certified maintenance personnel Model 200 Service Manual Ml Safety Information Electrical Safeguards High voltage access Front and rear covers contain safety interlocks Defeat restricted to Hughes JVC certified service personnel WARNING High Voltage points up to 40 000 volts are exposed inside the covers Allow at least one minute for the high voltage to bleed off even after power is turned off Due to high voltage danger DO NOT TOUCH e CRT cables These cable

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