FILE NO. SERVICE MANUAL MODEL PLC-XF20 Multimedia Projector U.S.A., Canada, Europe, Asia, Africa, M.E., U.K. Chassis No. ML6-XF2000 NOTE: Match the Chassis No. on the rating sheet on the cabinet with the Chassis No. in the Service Manual. If the Original Version Service Manual Chassis No.
Specifications TECHNICAL SPECIFICATIONS Projector Type Multi-media Projector Dimensions (W x H x D) 22.9" (581 mm) x 10" (252 mm) x 30.9" (783 mm) Net Weight 78.4 Ibs (35.5 kg) LCD Panel System 1.8" TFT Active Matrix type x 3 panels Number of Pixels 2,359,296 {786,432 (1,024 x 768) x 3} Color System...
Safety Instructions PRODUCT SAFETY NOTICE SAFETY PRECAUTIONS Product safety should be considered when a compo- nent replacement is made in any area of the projec- tor. Components indicated by mark in the parts WARNING: list and the schematic diagram designate compo- The chassis of this projector is isolated (COLD) from nents in which safety can be of special significance.
Protections This projector is equipped with the following protections to operate in safety. If the abnormality occurs inside the projector, it will automatically turn off by operating one of the following protection circuits. Circuit Protection Fuse The fuse is located inside of the projector. When either the LAMP indicator or the READY indicator is not illuminated, the fuse may be opened.
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Electric shock protection - Interlock switch (SW902) Lamp 1 P.F.C.1/2 Lamp 2 Fuse Ass'y Main sw LF901 AC INPUT F901 Power SW901 Lamp 3 P.F.C.3/4 Interlock SW Lamp 4 SW902 Interlock switch The lamp circuit of this projector is not isolat- ed from AC line, and it is HOT circuit.
LAMP REPLACEMENT CAUTION For continued safety, replace with a lamp assembly of the same type. Allow the projector to cool for at least 45 minutes before you open the lamp cover. The inside of the projector can be very hot. Do not drop the lamp assembly or touch the glass bulb! The glass can shatter and may cause injury.
Mechanical disassemblies Cabinet-front-top, Cabinet-front-bottom and Cabinet-front removal. 1. Remove 2 screws and remove the Cabinet front Cabinet front top. 2. Remove 4 screws and remove the Cabinet front bottom. 3. Remove 11 screws and remove the Cabinet front. Cabinet front bottom Cabinet-top removal.
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Ass'y Main removal. Remove 6 screws and remove the Ass'y main. Control-switch-unit and Terminal-slots-unit removal. 1. Remove the control-switch-unit by sliding it upward. 2. Remove the Terminal-slots-unit by sliding it upward.
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PFC1-4, Power, Subpower, Lampballast1-4, Motor & Audio Ass'ys and Fan Removal. Subpower PFC3-4 Lampballast 1-2 Power Lampballast 3-4 1. Remove 4 screws and remove the Motor & Audio Ass'y motor & audio. PFC1-2 2. Remove each 4 screws and remove the Ass'y PFC1-2 and 3-4.
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Fans and Adjustable-feet removal. 1. Remove each 2 or 3 screws and remove the Fans. 2. Remove each 6 screws and remove the Adjustable-feet. Fans removal. 1. Remove each 2 , 3 or 4 screws and remove the Fans. -10-...
Optical disassemblies Projection-lens and Holder-lens unit removal. Remove each 4 screws and remove the Projection-lens and Holder-lens unit. Integrator-lens-in, Integrator-lens-out/PBS, Condenser- lens, Relay-lens, Polarized-glass Ass'ys and Fan removal. Integrator-lens-in ass'y Integrator-lens-out/PBS ass'y Condenser-lens ass'y Optic Remove each 2 or 3 screws and then Polarized-glass Ass'ys pull the Integrator-lens-in, Integrator- lens-out/PBS, Condenser-lens, Relay-...
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Lamp-ass'ys, Cover-mirror and Optical-base-top removal. Lamp-ass'ys Cover-mirror Optical-base-top 1. Remove each 1 screw and remove the Lamp-ass'ys. 2. Remove each 4 or 11 screws and remove the Cover-mirror and Optical-base-top. Mirror and optical filter ass'ys removal. Optical-filter ass'ys Mirror-ass'ys Optical-filter ass'ys Remove each 2 screws and remove the Mirror and optical filter ass'ys removal.
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LCD-panel ass'ys removal. Remove each 4 screws and remove the LCD panel ass'ys. Prism ass'y and Polarized-glasses Polarized-glasses removal. Blue prism ass'y : Film side 1. Remove 4 screws and then pull the prism ass'y upward. 2. Remove each 1 or 2 screws and remove the Polarized-glasses.
Optical parts location Arrow A : Lot no. side B : Plane C : Coating side D : Spherical face Blue 122 119 Polarized-glasses Blue 117/118/119 R / G / B prism ass'y : Film side 120/121/122 R / G / B -14-...
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PWB Ass'ys location Motor fans location : Air flow R-panel G-panel B-panel -15-...
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No power Refer to "B2 Protections" of A1 size diagram. Ass'y Subpower PERIPHERY OF CHASSIS 1. Is lamp cover of projector removed? 1. Check that the Vcc-voltages are correct. The interlock switch (SW902) cuts off the circuit of projector 2. Check that the POWER FAIL signal is correct. from AC line when lamp cover is removed.
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Abnormal Temperature System control FN903 K26B FN913 P_FAIL ASSY LAMP NET FOR R PANEL K96D COOLING FAN FOR PFC P_FAIL RL12V FN904 K26C P_FAIL K96A FOR G PANEL PFC1_2 K26W LAMP1 LAMP2 BLAST_SW1 FN905 K26D P_FAIL FOR B PANEL K26A K96E BLAST_SW2 K26V...
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Abnormal Lamp System control Lamp_monitor 1. Is lamp cover of projector removed? The interlock switch (SW902) cuts off the circuit of projector from AC line when lamp cover is removed. 2. Is boss of lamp cover inside broken or not fitting? L611 Check the Interlock switch(SW902) and boss of lamp DB601...
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FN913 COOLING FAN FOR PFC ASSY LAMP NET K96D P_FAIL CN5A RL12V CN1A Check +B(RL-12) PFC 1-2 LAMP1 CN2A From K6B for PFC circuit. LAMP2 CN3A CN4A K96A 30 29 P_FAIL K7B2 28 27 K7B1 LAMP2_ERR 12 11 K96E K7A1 K7A2 BLAST_SW1 Ballast 1...
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Abnormal lens Projection lens Power lens system (Zoom, Focus and lens shift) LENS-UP LENS-DOWN LENS-L LENS-R FOCUS- FOCUS+ ZOOM- ZOOM+ K16H CENTER DET. TOP DET. BOTTOM DET. MOTOR_EN LENS-UP IC1631 DATA ADDRESS SHIFT + LENS SHIFT MOTOR DRIVE LENS-DOWN SHIFT - K16A 7, 8 K16G...
Waveforms 1 0 u s / D i v Input signal NTSC 0.5V/Div TP_32H1 H_sync 2V/Div TP_5101 0.5V/Div TP_5102 0.5V/Div TP_3141 C 0.5V/Div TP_3142 0.5V/Div TP_5181 TP_201 TP_8201 TP_9201 0.5V/Div 0 . 9 V / p _ p 1 . 1 V / p _ p 1 .
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5 u s / D i v TP_2551 PSIG 2.0V/Div TP_501 0.5V/Div TP_531 0.5V/Div TP_561 0.5V/Div TP_2511 TP_511 5V/Div 6.5V/p-p TP_521 TP_2521 5V/Div 6.5V/p-p TP_541 TP_2531 5V/Div 6.5V/p-p 2 m s / D i v Input_signal NTSC 0.5V/Div TP_32V1 V_sync 5V/Div -26-...
Electrical adjustments Service mode adjustment Menu Data no. Adjustment Item 20-0 5-1. R-SIG DC adjustment 20-1 5-2. G-SIG DC adjustment 20-2 5-3. B-SIG DC adjustment SERVICE MODE OPERATION 20-3 6. PSIG adjustments 20-4 6. PSIG adjustments 20-5 12. Common center adjustments 20-6 12.
ELECTRICAL ADJUSTMENTS : Readjust necessary Adjustments after Parts Replacement : Check necessary Replaced Parts LCD panels Polarized glass out Integrator lens in Integrator lens out/Prism PBS Condenser lens Relay lens Polarized glass in Optical parts (inside the optical unit) Ass'y Power/Subpower Ass'y Main (see note) NOTE : CAUTION TO REPLACE ASS'Y MAIN AND EEP-ROMS (IC891/ 892/1811).
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Electrical adjustments 1. Voltage adjustments 3. Component Video adjustments Equipment Oscilloscope. Input mode Y, Cb, Cr. **1-1. +6V_DC Voltage adjustment Input signal 16 step gray scale signal Equipment Digital voltmeter Picture condition Normal. Connections + K6D(2) Set service mode. - chassis ground Adjustment By using VR562, adjust DC Voltage to 6.1 *****3-1.
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Connections + TP2531 - chassis ground 4. Fan driving voltage adjustments Adjustment Select data no. 20-2. By using Volume +,- buttons, adjust DC Equipment Digital voltmeter. voltage to 7.4 ± 0.1 V DC. Input mode Input signal Picture condition Normal. Set service mode.
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Select data no. 910-4. By using Volume +,- buttons, adjust amplitude A to minimum level. Pedestal *****9-3. B Video gain adjustment Level Connections + TP561 / - chassis ground. Adjustment Select data no. 910-5. By using Volume +,- buttons, adjust Black Level amplitude A to minimum level.
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11. Video adjustments-2 13. Sample hold clock adjustments Equipment Oscilloscope. Equipment Oscilloscope. Input mode Computer. Input mode Computer. Input signal 16 step gray scale signal Input signal 16 step gray scale signal Picture condition Normal. Picture condition Normal. Set service mode. Set service mode *****13-1.
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needs to be initialized. Set the Data No. to "32-0" and Data value to "0009" in Service 15. White balance adjustments mode by pressing VOLUME (+) button on the projector. And then, press VOLUME (+) button again to initialize the Input signal 50% white signal Correction data.
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17. Correction of uneven color 2 After adjusting the "16. correction of uneven color 1", input the 50% white signal, and check the screen. If the uneven color stripe appears right (rear function is "on") or left (rear function is "off") on the screen as shown the Figure bellow, adjust the "17.
Focus Adjustment Scrwes-B Scrwes-B Screen Fig.-1 Green panel Screws-A Fig.-1 When you replace all of LCD panels such as disassembly cleaning, etc., first adjust the G-LCD panel as the standard reference, after that, adjust the R-LCD panel and B-LCD panel focus adjustments. When you replaced one of LCD panels, adjust only the replaced LCD panel focus to put the un-replaced LCD panels focus.
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Integrator-lens-in adjustment-1 [Before Adjustment] Slot-B * Move the integrator-lens-out left o r right to project the screen-edge. Screws-A (Refer to integrator-lens-out adjustment of next step.) [Adjustment] 1. Turn on lamp with FPC cables of LCD panels removed from ass'y main. 2.
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Integrator-lens-in adjustment-2 Screws-A Stripe Slot-B [Adjustment] 1. Turn on lamp with FPC cables of LCD panels removed from ass'y main. 2. Insert light block sheets in front of the Red and Blue panels to block the red and blue lights so that green light is projected. 3.
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Condenser-lens adjustment Green stripe Green stripe [Adjustment] 1. Turn on lamp with FPC cables of LCD panels removed from ass'y main. 2. Insert a light block sheet in front of the Blue panel to block the blue light so that yellow light is projected. 3.
Convergence adjustment For convergence adjustment, use Green as the reference standard. Align Red and Blue with Green by adjusting the position and angle of the Red and Blue LCD panels. Screws A, B and C (Fig.1) are for con- vergence adjustment. [Before adjustment] - Make sure each Red, Green and Blue LCD panel unit has been correctly installed, and that all focus adjustments have been completed before performing convergence adjustments.
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Prism P.B.S. adjustment Screws-B [Adjustment] 1. Input a 100% of white raster signal. 2. Loosen 2 screws B. 3. Insert a slot screwdriver into slot A and adjust the maximum brightness on center position of screen. Slot-A 4. Tighten the 2 screws B to fix the prism PBS. /1672 Polarized-glass adjustment Slot-B...
CPU In/Out put port functions Function Function Polarity In/Out Name USB Reset USB Reset ACTIVE L Fan CS1 Fan Drive-1 Chip Select ACTIVE L WRHL Write signal ACTIVE L RS232C-SW RS232C Output Select Power LED L: Off H: On VSS GND ADDRESS 0 ADDRESS BUS 0 ADDRESS 1...
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CPU In/Out put port functions Function Function Polarity In/Out Name SCL2 IIC Bus 2 Clock IN/OUT SDA2 IIC Bus 2 Data IN/OUT SRAM CHIP SELECT Active L USB/LCD DRIVER CHIP SELECT Active L VSS GND DATA 29 DATA BUS 29 IN/OUT DATA 28 DATA BUS 28...
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CPU In/Out put port functions Function Function Polarity In/Out Name Fan on/off Fan on/off Signal MODE 1 MODE 1 MODE 0 MODE 0 PLL VCC VCC PLL PLL CAP PLL FILTER GND PLL GND PLL M CLK CPU CLOCK OUT (FPGA) RESET RESET Active L...
NOTES ON SCHEMATIC DIAGRAM NOTES ON SCHEMATIC DIAGRAM 1. PRODUCT SAFETY NOTICE COMPONENTS DESIGNATED BY A MARK ( ) IN THIS SCHEMATIC DIAGRAM DESIGNATE COMPONENTS WHOSE VALUES ARE OF SPECIAL SIGNIFICANCE TO PRODUCT SAFETY. SHOULD ANY COMPONENT DESIGNATED BY A MARK NEED TO BE REPLACED, USE ONLY THE PART DESIGNATED IN THE PARTS LIST.
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NOTES ON SCHEMATIC DIAGRAM Read description in the Capacitor and Resister as follows: Marked ( Revised Aug. / 2000 ) ( Revised May / 1998 ) CAPACITOR 16 K K 0.47 BA Characteristic Rated value Tolerance Symbols Static capacitance of 10PF or less Material : Non-designated ±0.1PF...
Parts list : Readjust necessary Caution to replace parts : Check necessary Adjustments after Parts Replacement Replaced Parts LCD panels Polarized glass out Integrator lens in Integrator lens out/Prism PBS Condenser lens Relay lens Polarized glass in Optical parts (inside the optical unit) Ass'y Power/Subpower Ass'y Main (see note) NOTE :...
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< Electrical Parts List> Note: Part order must contain Chassis No., Part No., and descriptions. Product safety should be considered when a component replacement is made in any area of a Projector. Components indicated by a mark in this parts list and the schematic diagram show components whose value have special significance to product safety.
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PWB Ass'ys location Motor fans location : Air flow R-panel G-panel B-panel -49-...
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Without lens Without lens Panel Red/Blue EL901R EL901B Panel Green EL901G LCD Panel : See electrical parts list -51-...
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117/118/119 R / G / B 120/121/122 R / G / B 51-B 51-B 51-B 51-A 51-A 51-B 51-B 51-B -52-...
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Optical parts location Arrow A : Lot no. side B : Plane C : Coating side D : Spherical face Blue 122 119 Polarized-glasses Blue prism ass'y : Film side -53-...