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.
Table of Contents Safety Information .................................................................................. v Chapter 1 Introduction 1.1 1.2 1.2 1.4 Acronyms Used in Manual......................................................................... 1-1 Safety ........................................................................................................ 1-2 Updates ..................................................................................................... 1-2 Tool List..........
Chapter 5 Troubleshooting PCB Status LEDs .............................................................................................. 5-1 Error Codes ................................................................................................... 5-4 Troubleshooting Guide...................................................................................... 5-5 Chapter 6 Parts List .............................................................................. 6-1 Appendix A Import/Export .............
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.
Safety Information Installation Safeguards 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 HughesJVC 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.
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.
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 • • • • • CRT cables.
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 inside of the projector free from foreign objects, such as hairpins, nails, paper, etc.
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.
Chapter 1---Introduction Balldriver, 8mm Ballpoint L-Wrench Set, 1.5-5mm Delrin .
Chapter 1---Introduction PLUGE RAM RGB RGBHV ROM RTG SCB SECAM SRB SYNC TTL UL UV VAB VCO VIC VIN VPB VSYNC VTR YC Model 200 Service Manual 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 Volta
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 System......................................................................... 2-2 2.2.1 Image Path................................................................... 2-2 2.2.2 Arc Lamp Light Path .................................................... 2-4 2.3 Electronics System ..........................................................
Chapter 2---System Description • 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. • 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.
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 connectors.
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 to the screen.
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.
Chapter 2---System Description Figure 2-1.
Chapter 2---System Description 2.3 Electronics System 2.3.1 General Description 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).
Chapter 2---System Description 2.3.2 Power Supplies The Model 200 includes three power supply assemblies. • Low Voltage Power Supply • Arc Lamp Power Supply • High Voltage Power Supply Low Voltage Power Supply (LVPS) P76 P75 AC 1 INPUT 3 5 Line Earth Neutral LV Ret /LV_ENA /LV_OK +24v Fans +5.1v STBY +5.1v +6.2v +15V -15v +80V /COVER_ON /FAN_ENA 1-7 8 To P8 on 9 10 Backplane 11 12 13 14 15 16 17 18 Figure 2-3.
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.
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 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.
Chapter 2---System Description • Generation of focus voltage (G3) for all three CRTs (RGB) • Generation of screen (G2 supply-Black Level) voltage for all three CRTs • Generation of G1 supply (Blanking) voltage • Dynamic focus amplifier using H and V parabolas • External ON/OFF and generation of /HV_OK signal G A N O D E J5 9-1 B A N O D E J60-1 FR OM LVPS R F O C U S J58-1 + 80V 8 +15 V 9 -15 /H V E N A (/V A _O K ) (From VPB) HIGH VOLTAGE POWER SUPPLY 10 G F O C U S J59-1 B F O C U S J6
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.
Chapter 2---System Description CRTs OUTPUTS DESCRIPTION RED_ANODE GRN_ANODE BLU_ANODE Anode supply for the three CRTs. About 25 KV RED_FOCUS GRN_FOCUS BLU_FOCUS Focus voltage for the three CRTs. About 7 KV Interlocks and protection: This section describes the interactions between boards where one board may cause others to perform protection functions. Input A high signal at /HV_ENA shuts off the HVPS.
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: • Standard RGB Video Input Card, which is supplied with each projector and is used for RGB standard formats • Optional Four Input RGB VIC used in a similar manner as a switcher. • Optional HDTV VIC used for High Definition Television. • Optional Quad Standard Decoder VIC used for NTSC, PAL SECAM and other composite sources.
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).
Chapter 2---System Description /SEL_VIC Select line for VIC. A low indicates the RGB_VIC is selected. RED_VIC GRN_VIC BLU_VIC 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.
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 4:1 VIDEO MUX and BUFFERS RED_VIC GREEN_VIC BLUE_VIC H_VIC V_VIC HOR_CH1 HOR_CH2 HOR_CH3 HOR_CH4 VER_CH1 VER_CH2 VER_CH3 VER_CH4 IIC_CLK IIC_DATA IIC_INT IIC /SEL_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.
Chapter 2---System Description • LED indication • IIC serial bus interface Y/G B2 RED Pb/B B4 GRN Pr/R B6 BLU IIC_CLK IIC_DATA B13 A13 B8 +5.1V_STBY +5.1V +15V -15V HOR A16 B16 B12 /SELECT B15 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.
Chapter 2---System Description Table 2-4. HDTV VIC IIC Interface I/O Bits I 1 Information Description /SEL_YPbPr Selects YPbPr input mode for the YPbPr_VIC. Low = Selected YPbPr input mode. I 1 /SEL_RGB Selects RGB input mode for the YPbPr_VIC. Low = Selected RGB input mode.
Chapter 2---System Description HOR Composite horizontal / vertical sync signal 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 YPbPr_VIC. OUTPUTS DESCRIPTION /IIC_INT IIC interrupt line.
Chapter 2---System Description • Tint, sharpness, and color adjustment • LED indication of Composite or S-video • IIC serial bus interface Comp B2 R Y in B4 G C in B6 B B8 /H B10 /V IIC_CLK B13 IIC_DATA +5.1V +15V A13 B16 B12 /SELECT B15 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.
Chapter 2---System Description I TINT Data for adjustment of Hue I COLOR Data for adjustment of color I SHARP Data for adjustment of Sharpness I VTR Selection of VTR mode O VNR 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.
Chapter 2---System Description Low Voltage Power Supply INPUTS DESCRIPTION +5.1 V +5.1 V supply for use by The Quad Decoder VIC. +15 V + 15 V supply for use by the Quad Decoder VIC.
Chapter 2---System Description 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 primary color signals, and G2, G1 bias and DC RESTORE control signals to the Video Amplifier Board (VAB).
Chapter 2---System Description J17 EXTERNAL VIDEO B31 B29 B27 B25 B23 B21 B19 B17 B15 B13 B11 B9 B7 B5 B3 A2 B1 A1 /SEL_VIC#1 /SEL_VIC#2 /SEL_VIC#3 J16 FROM SCB FROM RTG J16 RED_VIC#1 RED_VIC#2 RED_VIC#3 GRN_VIC#1 GRN_VIC#2 GRN_VIC#3 BLU_VIC#1 BLU_VIC#2 BLU_VIC#3 H_VIC#1 H_VIC#2 H_VIC#3 V_VIC#1 V_VIC#2 V_VIC#3 B32 RED_OVER B31 GRN_OVER B30 BLU_OVER H_SYNC A17 V_SYNC A16 GRN_SYNC B17 GRN INPUT A28 RED_VIDEO B2 GRN_VIDEO B4 BLU_VIDEO B6 TO VAB VIDEO PROCESSOR BOARD B29 OVERLAY B15 CLAMP B15 BLAN
Chapter 2---System Description I RED_G2 Red G2 Control I GRN_G2 Green G2 Control I BLU_G2 Blue G2 Control I WHT_BOOST Gamma correction I BLK_BOOST Gamma correction I G1_BIAS G1 bias level O /VA_OK Issues to SCB that Video Amplifier is OK O BEAM_CURRENT Beam current control O 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.
Chapter 2---System Description GRN_THRES Similar to RED_THRES BLU_THRES Similar to RED_THRES I/O DESCRIPTION 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 IIC_CLK IIC clock line. Unidirectional clock line for control of synchronous data transfer over IIC bus.
Chapter 2---System Description OUTPUT DESCRIPTION RED_VIDEO Red video output. 0 Volt to 1 Volt. GRN_VIDEO Similar to RED_VIDEO BLU_VIDEO Similar to RED_VIDEO 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. RED_G2 Red CRT G2 voltage adjust control signal.
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.
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.
Chapter 2---System Description J68 RED_BEAM From VPB J67 2 4 6 J68 From VPB 23 From RTG From HVPS From VPB RED _CATHODE 8 RED _GRID1 9 RED _GRID2 10 To RED RED _HEAT+ 6 CRT RED _HEAT7 ARC _GND 3 J83 RED_VIDEO GRN_VIDEO BLU_VIDEO J68 RESTORE 11 RED_G2 13 15 GRN_G2 BLU_G2 J69 From HVPS 1 J68 From HVDB 19 From LVPS GRN_BEAM 14 To VPB GRN _CATHODE GRN _GRID1 GRN _GRID2 GRN _HEAT+ GRN _HEATARC_GND 8 9 10 To GRN 6 CRT 7 3 BLU_BEAM 16 To VPB BLU_CATHODE BLU_GRID1 BLU_GRID2 8 9 10 To BLU CRT 6
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 RED_G2 Black level (G2) control lines 0 to 3.1 V GRN_G2 BLU_G2 RESTORE Video DC restoration pulse. logic HC positive going 4% duty cycle OUTPUTS DESCRIPTION /VA_OK VAB status line. Low = good VAB. High = Bad VAB (This signal is called /HV_ENABLE at the HVPS).
Chapter 2---System Description Raster Timing Generator Board INPUTS DESCRIPTION BLANKING Blanking signal. logic F type CRTs OUTPUTS DESCRIPTION RED_FOCUS GRN_FOCUS BLU_FOCUS Focus supply of CRTs. about 7 KV. RED_GRID1G RN_GRID1BL U_GRID1 Grid 1 (G1) signal of CRTs. RED_HEAT+ GRN_HEAT+ BLU_HEAT+ Positive side of the heater voltage for CRTs. About 6.2 V. RED_HEATGRN_HEATBLU_HEAT- Negative side (return line) of the heater voltage for CRTs. Ground level.
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.
Chapter 2---System Description P11 Lens Zoom Lens Focus TO PROJ LENS B23 B24 FROM LVPS B28 B29 B27 FROM HVPS B26 /HV_OK B31 B30 B32 /LAMP_OK /LAMP_LIT FROM ALPS FROM RTG B9 B10 B2 B1 B3 P10 /LV_ENA /FAN_ENA /LV_OK /LAMP_ENA ODD_FIELD SRC_VALID H_DRIVE_SC RED_OVER GRN_OVER BLU_OVER SYSTEM CONTROLLER BOARD V_DRIVE H_F2V P10 B31 B30 A32 A31 A30 FROM LVPS Y_RED_CONV Y_GRN_CONV Y_BLU_CONV X_RED_CONV X_GRN_CONV X_BLU_CONV BLU_THRES IIC_DATA IIC_CLK IIC_CLK1 IIC_CLK2 IIC_CLK3 A B 2 0 -2 0 2
Chapter 2---System Description IIC_DATA IIC data line. Serial line for synchronous data transfer of the following data between Video Processor Board and SCB board. I=Input, O=Output. I BEAM CURRENT I OK DETECT O RED_CONT O GRN_CONT O BLU_CONT O BRIGHTNESS O RED_G2 O BLU_G2 O GRN_G2 O WHT_BOOST O BLK_BOOST OUTPUTS DESCRIPTION OVERLAY Overlay control signal /IIC_INT IIC interrupt line.
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 frequency OUTPUTS DESCRIPTION ISYNC_CLK IIC_CLK 5 mHz clock used to generate the internal sync signals IIC clock line. Unidirectional clock line for control of synchronous data transfer over the IIC bus interface. IIC_DATA IIC data line.
Chapter 2---System Description IIC_DATA IIC data line. Bidirectional serial line for synchronous data transfer between the SCB and the Horizontal/Vertical Deflection board. I=Input, O=Output.
Chapter 2---System Description /LAMP_LIT Informs the SCB that the Arc Lamp is lit or not lit OUTPUTS DESCRIPTION /LAMP_ENA Enables ALPS power Projection Lens OUTPUTS DESCRIPTION LENS_FOCUS Signal to lens focus motor LENS_ZOOM Signal to lens zoom motor Front IR INPUTS DESCRIPTION /FRONT_IR Input from front infrared receiver /REAR_IR Input from rear infrared receiver Model 200 Service Manual 2-39
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 2-10 and 2-11) provide information to allow the technician to perform module level troubleshooting.
Chapter 2---System Description Horizontal/Vertical Deflection Board uses these lines for proper selection of retrace times. J13 FROM VPB FROM SCB B3 V_SYNC B4 H_SYNC B5 G_SYNC A5 GRN_INPUT B19 ISYNC_CLK B27 IIC_CLK B28 IIC_DATA A29 FROM LVPS J13 RASTER TIMING GENERATOR +5.1V_STBY B29 GND A32 +5.1V B32 +5.
Chapter 2---System Description I I I I I O 9 12 12 8 12 3 Left blanking Top blanking Bottom blanking Horz. phase Vert.
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 /H_ FLYBACK Not used by t
Chapter 2---System Description Low Voltage Power Supply INPUTS DESCRIPTION +5V +15V Power for digital portion of RTG board Power for the phase locked loop and the supporting circuitry of RTG board Power for the phase locked loop and the supporting circuitry of RTG board -15V +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.
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.
Chapter 2---System Description Figure 2-14. Horizontal/Vertical Deflection PCB I/O Diagram. Table 2-10. Horizontal/Vertical Deflection IIC Data Interface Input / Output No.
Chapter 2---System Description I 8 V_RED_EDGE_CONTROL I 8 V_GRN_EDGE_CONTROL I 8 V_BLU_EDGE_CONTROL I 8 L/R_KEY_CONTROL I 8 L/R_PIN_CONTROL I 8 WIDTH_CONTROL I 8 H_RED_CENT_CONTROL I 8 H_GRN_CENT_CONTROL I 8 H_BLU_CENT_CONTROL I 8 V_RED_CENT_CONTROL I 8 V_GRN_CENT_CONTROL I 8 V_BLU_CENT_CONTROL O 1 FRONT/REAR O 1 FLOOR/CEIL O 1 /DEFL_OK O 2 HVD_MODEL Model 200 Service Manual Data for adjustment of red vertical edge linearity Data for adjustment of green vert
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.
Chapter 2---System Description H_LOCK+ H_RED+ H_GRN+ H_BLU+ Horizontal interlock for yoke connectors. This should be about 5 V 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. V_RED+ Output of red vertical amplifier. About 40 VPP. V_GRN+ Output of green vertical amplifier. About 40 VPP.
Chapter 2---System Description +80 V + 80 V supply for use by the switching supply of horizontal deflection amplifier 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.
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.
Chapter 2---System Description J38 J32 1 FROM SCB GND RED_ILA+ IIC_CLK RED_ILA- IIC_DATA GRN_ILA+ /IIC_SINT GRN_ILA- 2 3 4 BLU_ILA+ J31 1 FROM SCB BLU_ILA- X_RED_CONV 4 X_GRN_CONV 6 X_BLU_CONV X_RED- 8 Y_RED_CONV X_GRN+ 10 Y_GRN_CONV X_GRN- 12 Y_BLU_CONV X_BLU+ X_BLU- GND V_DRIVE CONVERGENCE/ DEFLECTION BOARD TO ILAs 5 7 8 1 2 3 4 TO/FROM SRB 5 6 J40 Y_RED+ Y_REDY_GRN+ Y_GRNY_BLU+ J33 FROM HVDB 5 4 J39 X_RED+ 18 CORR_SYNC FROM RTG 17 2 GND 2 16 1 WIDTH_CONT
Chapter 2---System Description I 1 ILA_FREQ_N4 Data for selection of frequency of ILA bias circuit I 1 ILA_FREQ_N5 Data for selection of frequency of ILA bias circuit I 1 ILA_FREQ_N6 Data for selection of frequency of ILA bias circuit I 1 ILA_FREQ_N7 Data for selection of frequency of ILA bias circuit I 1 ILA_FREQ_N8 Data for selection of frequency of ILA bias circuit I 8 ILA_RED_BIAS Data for adjustment of red ILA bias I 8 ILA_GRN_BIAS Data for adjustment of green ILA bias I 8
Chapter 2---System Description I 8 TP_KEY Data for adjustment of top/bottom keystone I 8 TP_KEY_BAL I 1 /RASTER_FIL I 1 /CONV_ENABLE O 1 ILA_LOCKED O 1 /CD_OK O 2 CD_MODEL Data for adjustment of top/bottom keystone balance Control line for the raster fill option, low = raster fill is active Convergence enable line low = enabled convergence Status line for the lock indication of the PLL of the ILA section with high = locked PLL Convergence board status line.
Chapter 2---System Description ILAs OUTPUTS DESCRIPTION RED_ILA+ The positive output of red ILA driver circuitry, about ± 12 VPP RED_ILA- The negative output of red ILA driver circuitry, about ± 12 VPP GRN_ILA+ The positive output of green ILA driver circuitry, about ± 12 VPP GRN_ILA- The negative output of green ILA driver circuitry, about ± 12 VPP BLU_ILA+ The positive output of blue ILA driver circuitry, about ± 12 VPP BLU_ILA- The negative output of blue ILA driver circuitry, about ± 12 VP
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 V_DRIVE DESCRIPTION Square wave HCT level synchronized to vertical sync with 4H duty cycle.
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.
Chapter 2---System Description Figure 2-16. Scan Reversal Board, Input/Output Diagram. Scan Reversal Board I /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.
Chapter 2---System Description Table 2-15. Scan Reversal Board I/O signals Horizontal / Vertical Deflection Board INPUTS H_OUT_ FLYBACK H_LOCK+ H_RED+ H_GRN+ H_BLU+ DESCRIPTION Horizontal output flyback pulse, about 800 VPP Horizontal interlock for yoke connectors. This should be about 5 V when closed or 15 V when open. Output of horizontal red centering (also top of the red horiz yoke). About + 5 Vdc. Output of horizontal green centering (also top of the green horiz yoke). About + 5 Vdc. Output of horiz.
Chapter 2---System Description X_BLU+ Output of horizontal blue convergence amplifier Y_RED+ Output of vertical red convergence amplifier Y_GRN+ Output of vertical green convergence amplifier Y_BLU+ Output of vertical blue convergence amplifier OUTPUTS DESCRIPTION X_RED- Current feedback of horizontal red convergence amplifier X_GRN- Current feedback of horizontal green convergence amplifier X_BLU- Current feedback of horizontal blue convergence amplifier Y_RED- Current feedback of vertica
Chapter 2---System Description V_GRN_YOK+ Top of green vertical yoke V_GRN_YOK- Bottom of green vertical yoke X_GRN_YOK+ Top of green horizontal convergence yoke X_GRN_YOK- Bottom of green horizontal convergence yoke Y_GRN_YOK+ Top of green vertical convergence yoke Y_GRN_YOK- Bottom of green vertical convergence yoke- Blue Yoke Connector NAME DESCRIPTION H_BLU_YOK+ Top of blue horizontal yoke H_BLU_YOK- Bottom of blue horizontal yoke BLU_LOCK+ Interlock for blue yoke.
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.
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.
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.
Chapter 2---System Description Model 200 Service Manual 2-65
Chapter 3---Service Adjustments 3.0 Service Adjustments Contents 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 Arc Lamp Focus and Alignment............................................................... 3-1 Arc Lamp Current Setting ........................................................................ 3-4 Electronic Module Tilt-up ......................................................................... 3-5 ® ILA Back Focus .....................................................................................
Chapter 3 Service Adjustments 3. Use the right/left arrow keys on the remote control and adjust the Flat Field to 0%. 4. 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. ® 5.
Chapter 3---Service Adjustments 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.
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.
Chapter 3---Service Adjustments Adjust the Arc Lamp current with this pot. Place the second DVM, from Step 3, across these terminals. Figure 3-4. Arc Lamp Power Supply aperture. 5. 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). 6. The resulting power from Step 4 should equal 750 watts. 7. If the result is not 750 watts, adjust the trimmer pot (refer to Figure 3-4). CW=increase, CCW=decrease.
Chapter 3 Service Adjustments 4. Select the Focus test pattern. 5. Select Projection Lens from the menu. 6. Use the up/down arrow keys to zoom the Projection Lens to full telephoto position (smallest image). NOTE: Skip this step when using an optional fixed lens. 7. 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.
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.
Chapter 3 Service Adjustments CRT Holder Ring Set Screw Focus Lock Screw Set Screw CRT Thumb Screw Guide Plate CRT Shield 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 should 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.
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.
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. 2. Hide all three colors. ® 3. Increase the ILA biases to maximum for all 3 colors.
Chapter 3---Service Adjustments ® damaging the connector, grasp the ILA assembly itself, not the connector at the top. 4. 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 assembly 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.
Chapter 3 Service Adjustments 2. 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. 4. Replace the projector cover. 5. When changing jumpers for front or rear screen projection, Centering, convergence and shading must be rechecked. 3.9.
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. 2. Hide Blue and view Red and Green. 3.
Chapter 3 Service Adjustments To adjust the horizontal size coils (see Figure 3-7): 1. Continue to use 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.
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.
Chapter 3 Service Adjustments 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*** Press Enter to continue, Esc to abort. 11D.
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.
Chapter 3 Service Adjustments Projection Lens: Use lens paper and wipe the lens clean in a 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.
Chapter 4---Maintenance (Removal/Replacement) 4.0 Maintenance (Removal/Replacement) Contents 4.1 Introduction .............................................................................. 4-1 4.2 Projector Covers ...................................................................... 4-4 4.3 Air Filters.................................................................................. 4-5 4.4 Arc Lamp Assembly................................................................. 4-5 4.5 Arc Lamp Power Supply ...
Chapter 4---Maintenance (Removal/Replacement) 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.
Chapter 4---Maintenance (Removal/Replacement) Arc Lamp Air Filter and Cover Optical Shield Horizontal/Vertical Deflection PCB. Convergence PCB on opposite side. Card Cage containing System Controller, Raster Timing Generator, Video Processor and Video Input Cards. Shutter Motors Lamphouse Dock and Arc Lamp Rollbar Prism Assembly Arc Lamp Power Supply Lower Right Side Panel. Remove to provide access to ALPS and LVPS. CRT Assemblies, Relay Lenses, ® ILA s, and Video Amplifier PCB.
Chapter 4---Maintenance (Removal/Replacement) 4.2 Projector Covers Prior to removing either cover, 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 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.
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. 6. Replace the covers in reverse order from above.
Chapter 4---Maintenance (Removal/Replacement) 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.
Chapter 4---Maintenance (Removal/Replacement) 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. 8. After reinstalling the Arc Lamp, perform the Arc Lamp Focus, Alignment and Current Setting procedures as shown in Sections 3.1 and 3.2. To remove the Lamphouse Dock (Ignitor and Laser PS): 1.
Chapter 4---Maintenance (Removal/Replacement) 4.5 Arc Lamp Power Supply To remove the Arc Lamp Power Supply: 1. Remove the front cover (Section 4.2). 2. Remove the lower-right-front-side panel by removing the 5 pozidrive screws securing it. 3. Remove the 2 pozidrive screws from the bottom of the EMI shield and slide it out of the way to the left. 4. Remove and label the cables from the DC OUTPUT terminal, J74. 5. Disconnect J71 (AC Input). 6. Disconnect J72 (SIGNAL CABLE). 7. Remove J73. 8.
Chapter 4---Maintenance (Removal/Replacement) 1. Remove the front and rear covers (Section 4.2). 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). Figure 4-5. High Voltage Power Supply cover. Figure 4-6 High Voltage Power Supply. 3.
Chapter 4---Maintenance (Removal/Replacement) NOTE: For the remainder of this procedure refer to Figure 4-6 above. 4. Disconnect the 3 CRT anode cables. 5. Disconnect P44-G2 Out (at the middle-front of the HVPS). 6. Unsnap the cable clamp at the top of the HVPS. 7. Remove the anode cables and the P44 cable from the cable clamp. 8. Disconnect P45 (“Control”) at upper left of HVPS. 9. Disconnect and label the 3 Focus cables.
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. 3. For the Raster Timing Generator and Video Processor PCBs, grasp the card extractor tabs at both ends of the boards and pull out.
Chapter 4---Maintenance (Removal/Replacement) 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). 5. Remove the Convergence Deflection PCB by sliding it upward so the mounting screws will clear the access holes, then angle the right side outward.
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) so that the mounting screws clear the access holes.
Chapter 4---Maintenance (Removal/Replacement) 2. Remove the 2 flathead screws that secure the VIC to the projector rear panel. 3. 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 Video Amplifier PCB: 1. Remove the front and rear covers (Section 4.2). 2.
Chapter 4---Maintenance (Removal/Replacement) 7. Place the Green CRT Assembly in a safe location on or against one of the other CRT Assemblies. 8. Disconnect the Red and Blue CRT Socket Connectors and gently lay them on the top of the Video Amplifier Board. 9. 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. Figure 4-9. Video Amplifier PCB showing breakaway CRT Socket Connectors. 10.
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, J64, J65, J66, J50 (or J50A), and J100 (or J101).
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): Blue ILA Rollbar Bracket Relay Lenses Cable Harness to Scan Reversal PCB CRT/Yoke Assemblies Video Amplifier PCB below CRTs Metal-Framed Air Filter behind grille. Air Filter on bottom. Red ILA Green ILA CRT Lens Stopper Ring Figure 4-11. View of CRTs, Relay lenses and ILA® Assemblies. 1.
Chapter 4---Maintenance (Removal/Replacement) 8. 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.
Chapter 4---Maintenance (Removal/Replacement) Figure 4-12. ILA® Assembly top view. The overlap screws shown are visible after the ILA® assembly is removed. 4. Loosen the two wingnuts at the top of the appropriate ® ILA assembly (Figure 4-12). ® 5. Slide the spring clip at the top of the ILA assembly ® backward (Figure 4-12). This will free the ILA assembly. ® 6. Grasp the ILA assembly by its housing and slide it out. ® 7. Replace the ILA in the reverse order from above. ® 8.
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.
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 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.
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). Figure 4-15. Prism Assembly mount.
Chapter 4---Maintenance (Removal/Replacement) 9. Remove the Rollbar assembly (2 pozidrive bolts/nuts on left side and two nuts 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. 10. Remove the Rollbar Bracket that was holding up the left side of the Rollbar assembly. ® 11. Remove the 3 ILA asssemblies (Section 4.15). 12.
Chapter 4---Maintenance (Removal/Replacement) 4-24 Model 200 Service Manual
Chapter 5---Troubleshooting 5.0 Troubleshooting Contents 5.1 Status LEDs ............................................................................. 5-1 5.2 Error Codes.............................................................................. 5-4 5.3 Troubleshooting Guide............................................................. 5-5 5.
Chapter 5---Troubleshooting Figure 5-2. Left side of projector with rear cover off. Figure 5-3. Right Side of projector with rear cover off.
Chapter 5---Troubleshooting 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 Number 1 Error Category Description CEXEC Operating System.
Chapter 5---Troubleshooting The error codes listed in Table 5-2 describe problems associated with software (Version 0.9.8) and hardware 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 ON-SCREEN TEXT NUMBER DESCRIPTION 1.
Chapter 5---Troubleshooting 4.6 “VA PCA Not OK” /VA_OK is High (BAD). 4.7 “VP PCA Missing” “No Slave Ack” status on first poll of VP. 4.8 “VP PCA Not OK” VP_OK is High (BAD) 4.9 “RTG PCA Missing” “No Slave Ack” status on first poll of RTG 4.10 “RTG PCA Not OK” RTG_OK is High (BAD) 4.14 “Lamp Startup” Lamp Failed to light (/LAMP_LIT_B not Low for 3 seconds out of 20 seconds.) 4.15 “Low Voltage PS” Low Voltage PS failed (/LV_OK_B is High). 4.
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. Troubleshooting Guide.
Chapter 5---Troubleshooting Table 5-3. Troubleshooting Guide (continued) PROBLEM CHECK POSSIBLE SOLUTION SECTION Arc Lamp Brightness flicker or picture is very dim. Arc Lamp may have too many hours of usage. Replace Arc Lamp. 4.4 Image out of focus Spacer balls not visible. Perform the Projection Lens Focus procedure. Perform the CRT Mechanical Focus procedure. Adjust the Electronic focus. User’s Guide 5.5.15 ® ILA “spacer balls” are visible but the image is fuzzy.
Chapter 5---Troubleshooting PROBLEM CHECK POSSIBLE SOLUTION XY Convergence Not enough range in Red Adjust Red or Blue or Blue XY convergence. CENTERING to match Green. Picture Color Balance Red, Green, or Blue is missing in the image. Red, Green, or Blue lacks color. Grey scale test pattern is correct but image color is incorrect. Black image is overdriven. Bright Red, Green, or Blue area on screen limited to corners or edge. Grey scale is Green in bright areas. Grey scale is Red in bright areas.
Chapter 5---Troubleshooting Table 5-3. Troubleshooting Guide (continued) PROBLEM Picture-Various Problems CHECK POSSIBLE SOLUTION Image jitter and noise. Replace Video Processor Board. Image jitter present at Replace Raster Timing one source only. Generator. Image is not level. Level the projector or rotate the CRT Yoke. VTR mode checked in “Flagwaving” at top of picture or top of image is Timing menu. Deselect VTR mode. skewed. Black line appears on the Loss of fluid in Prism. screen. Replace Prism.
Chapter 5---Troubleshooting 5-10 Model 200 Service Manual
Import/Export Model 200 Configuration Data Export / Import Procedure Rev 1.0.0 This appendix defines the steps to perform a Configuration Data Export & 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.
Import/Export 5. 4.3. Select OK with mouse or press Enter key (dialog will be removed) 4.4. Verify TERMINAL screen shows status line at bottom: Stop, Pause, Bytes: 0, Receiving: EXPORT1.TXT 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).
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! | | | | to Continue | | < ESC> to Cancel | ================================= 4. Press ENTER to continue with the Import. 5.
Import/Export | | | - 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. 8. 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.
Glossary Glossary Of Terms Amorphous Without definite form; not crystallized. Arc Lamp 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. Aspect Ratio 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.
Glossary a total of 525 scanning lines in NTSC transmission. B-2 Horizontal Scan Reversal Jumper Reverses the image projection for front or rear projection. Located on the Horizontal Deflection Board. Horizontal Size Coils Adjusting coils on the Scan Reversal Board. Used to adjust the horizontal size (width). Hot Spot The Arc Lamp’s brightest area on the screen. Used to align and focus the Arc Lamp. Hue Also referred to as tint. A specific color such a blue, pink or aqua.
Glossary Luminance Abbreviated as "Y." The portion of the signal that contains the black and white information, which affects brightness. Noise An undesirable electrical interference of a signal. Overscanning 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. Raster The area illuminated by the scan lines on a CRT.
Glossary B-4 Saturated Color 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. Scan 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 refresh a CRTbased video screen. Scan Line One of many horizontal lines in a graphics frame. Scan Rate The frequency of line scanning for a monitor or projector.
Glossary Model 200 Service Manual B-5
