FILE NO. SERVICE MANUAL Multimedia Projector Model No. PLC-XT11 PLC-XT16 U.S.A., Canada, Europe, Asia, Africa Original Version Chassis No. MJ7-XT1100 MH7-XT1600 NOTE: Match the Chassis No. on the unit’s back cover with the Chassis No. in the Service Manual. If the Original Version Service Manual Chassis No.
■ Safety Instructions SAFETY PRECAUTIONS WARNING: The chassis of this projector is isolated (COLD) from AC line by using the converter transformer. Primary side of the converter and lamp power supply unit circuit is connected to the AC line and it is hot, which hot circuit is iden- tified with the line ( ) in the schematic diagram.
■ Specifications Projector Type Multi-media Projector Dimensions (W x H x D) 11.9" x 6.4" x 16.6" (302mm x 162mm x 422mm) (not including Adjustable Feet) Net Weight 17.2 lbs (7.8 kg) LCD Panel System 0.99” TFT Active Matrix type, 3 panels Panel Resolution 1024 x 768 dots Number of Pixels...
■ Circuit Protections This projector provides the following circuit protections to operate in safety. If the abnormality occurs inside the pro- jector, it will automatically turn off by operating one of the following protection circuits. ● Fuse Line Filter Board Fuse The fuse is located inside of the projector.
Circuit Protections ● Warning temperature and power failure protection The projector will be automatically turned off when the internal temperature of the projector exceeds the normal oper- ating temperature, or the cooling fans stops, or the power supplies in the projector are failed. - If the TEMP WARNING indicator (red) is flashing, it may detect the abnormal temperature inside the projector.
■ Mechanical Disassemblies Mechanical disassemble should be made following procedures in numerical order. Following steps show the basic procedures, therefore unnecessary step may be ignored. Caution: The parts and screws should be placed exactly the same position as the original otherwise it may cause loss of performance and product safety.
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Mechanical Disassemblies Main Board & Thermal-SW removal Remove 1 screw (M3x8) to take the thermal SW905 Main Board switch(SW905). Remove 5 screws (M3x6) to take the Main Board upward. AV Board COM Board Rear Panel Ass’y AV, COM Board & Rear Panel removal Fig.2 Remove 1 screw (M4x10) and take the Rear Panel...
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Mechanical Disassemblies Speaker base removal Remove 3 screws (T3x10) and then remove the Speaker Base Speaker Base. Fig.4 Optical Unit removal Loosen 1 screw on the lamp cover and 2 screws the lamp house and the take the Lamp House off from the cabinet bottom.
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Mechanical Disassemblies Fan & Motor removal Remove 4 screws (T3x20) to take the fan (FN904) off. Remove 3 screws (T4x25) to take the fan (FN907) off. Remove 4 screws (T3x10) to take the duct ass’y off. FN904 Remove 2 screws (T3x6) to take the Lens Shift Motor and Sensor SW Holder from the Base.
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Mechanical Disassemblies Power AC Board removal Power AC Remove 4 screws ( T3x6) to take the Power Board off. Board Remove 4 screws (T3x10) to take the Holder from the cabinet bottom. Line Filter Board & Interlock SW removal Remove 3 screws (T3x10) to take the Filter Board Ass’y upward.
■ Optical Parts Disassemblies Before taking this procedure, remove Cabinet Top and Main Board following to the “Mechanical Disassemblies”. Disassembly requires a 2.0mm hex wrench. Projection Lens removal Shift the projection lens to the end of top position by pressing Note in the Mounting Projection the Lens Shift (+) button.
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Optical Pats Disassemblies Prism ass’y removal and disassembly Remove 4 hex screws and take the LCD/Prism ass’y off upward. Remove each 1 screw and take the Glass Holder, and then pull the Optical filter, Polarized Glass-Out upwards off. These glasses are mounted for R, G and B LCD panels respectively.
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Optical Parts Disassemblies Relay Lens disassembly Remove 2 hex screws and pull the Relay Lens ass’y upward. Remove 2 screws to take the Lens off from the holder. Note: There is no mounting direction of the lens. Holder Relay Lens Fig.4- Fig.4- Integrator-In disassembly...
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Condenser Lens disassembly Remove 2 hex screws and take the Condenser Lens ass’y. Remove 4 screws to take the Lens off from the holder. * Lens should be placed as the flat surface side comes to the holder side. Holder Condenser Lens Fig.6- Fig.6-...
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Optical Parts Disassemblies Key No. Description Locations and Directions Slit-Int When the optical parts in the optical unit mounting or assembling, the Integrator Lens-Out parts must be mounted in the specified location and direction as PBS (Prism Beam Splitter) shown in figure below. Mirror (W-Cold) Note: The arrow in the figure below is indicated that there is the direc- Condenser lens-Out...
■ LCD Panel/Prism Ass’y Replacement IMPORTANT NOTICE on LCD Panel/Prism Ass'y Replacement LCD panels used for this model can not be replaced separately. Do not disassemble the LCD Panel/Prism Ass’y. These LCD panels are installed with precision at the factory. When replacing the LCD panel, should be replaced whole of the LCD panels and prism ass’y at once.
■ Lamp Replacement WARNING: ORDER REPLACEMENT LAMP - For continued safety, replace with a lamp assembly of the same type. Type No. Service Parts No. - Allow the projector to cool for at least 45 minutes before you open the POA-LMP59 610 305 5602 lamp cover.
■ Optical Adjustments Before taking optical adjustments below, remove the Cabinet Top and Main Board, if required, following to the “Mechanical Disassemblies” Adjustments require a 2.0mm hex wrench and a slot screwdriver. Note: Do not disconnect connectors K8E, K8F, K8G, K8J and K8K on the main board, because the projector can not turn on due to operate the power failure protection.
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Optical Adjustments Condenser Lens adjustment Turn the projector on by a state of without FPC cables. Adjust the adjustment base of condenser lens ass’y to make color uniformity in white. 1) If the shading appears on the left or right of the screen as White shown in Fig.2-1, loosen 2 screws with the 2.0mm hex driv-...
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Optical Adjustments Relay Lens-Out adjustment Turn the projector on by a state of without FPC cables. Adjust the adjustment base of relay lens ass’y to make color unifor- mity in white. 1) If the shading appears on the left or right of the screen as shown in Fig.3-1, loosen 2 screws with the 2.0mm hex driver, and White...
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Optical Adjustments Mirror adjustment Turn the projector on by a state of without FPC cables. Adjust the adjustment base of mirror to make color uniformity in white. 1) If the cyan bar appears on the top or bottom of the screen as shown in Fig.4-1, loosen 2 screws with the 2.0mm hex driver, White...
■ Electrical Adjustments ● Service Adjustment Menu Operation To enter the service mode To enter the “Service Mode”, press and hold the MENU and IMAGE button on the projector at the same time for more than 3 seconds. The service menu appears on the screen as follows. To adjust service data Select the adjustment group no.
Electrical Adjustments ● Circuit Adjustments CAUTION: The each circuit has been made by the fine adjustment at factory. Do not attempt to adjust the follow- ing adjustments except requiring the readjustments in servicing otherwise it may cause loss of per- formance and product safety.
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Electrical Adjustments NRS adjustment Video Gain adjustment [PC] 1. Receive the 16-step gray scale computer signal with 1. Receive the 16-step gray scale computer signal with Computer 1 [Analog RGB] mode. Computer 1 [Analog RGB] mode. 2. Enter the service mode. 2.
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Electrical Adjustments Luminance adjustment adjustment [PC] Pedestal adjustment [Video] 1. Receive the 100%whole-white computer signal with 1. Receive the 100%whole-Black composite video sig- Computer 1 [Analog RGB] mode. nal with Video mode. 2. Enter the service mode. 2. Enter the service mode. TP531 3.
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Electrical Adjustments A/D Input adjustment [Component] Pedestal adjustment [Component] [1080i-A/D INPUT ADJUSTMENT] [1080i-PEDESTAL ADJUSTMENT] 1. Receive the 16-step gray scale component signal 1. Receive the 100%whole-Black component signal [1080i] with Video [Y/Pb,Pr/Cb,Cr] mode. [1080i] with Video [Y/Pb,Pr/Cb,Cr] mode. 2. Enter the service mode. 2.
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Electrical Adjustments Video Gain adjustment [Component] White Balance adjustment 1. Receive the 16-step gray scale component signal [PC WHITE BALANCE ADJUSTMENT] [1080i] with Video [Y/Pb,Pr/Cb,Cr] mode. 1. Receive the 100%-whole white computer signal with 2. Enter the service mode. Computer 1 [Analog RGB] mode. TP531 3.
Electrical Adjustments ● Service Adjustment Data Table These initial values are the reference data written from the CPU ROM to memory IC when replaced new memory IC. The adjust- ment items indicated with “✻” are required to readjust following to the “Electrical adjustments”. Other items should be used with the initial data value.
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Electrical Adjustments Adjustment Item Initial Value Range Input source / Description LTI_LEVEL 1/1/0/0 0 ~ 3 NT,NT443,PAL,SECAM,PALM,PALN,480i,575i/ 480p,575p / 1080i60,1035i,720p/ 1080i50 D_PIC 0/0/1/1 0 ~ 3 NT,NT443,PAL,SECAM,PALM,PALN,480i,575i/ 480p,575p / 1080i60,1035i,720p/ 1080i50 31/31/31 0 ~ 63 PAL,PALM,PALN,PAL60,SECAM/ 575i,575p, only possible to adjust in these mode SUB_COL 7/7/7/8/6/9 0 ~ 15...
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Electrical Adjustments Adjustment Item Initial Value Range Input source / Description R_BLK_DC 80/80/80 0 ~ 255 AV Pedestal Adjustment video/1080i,1035i,720p/480p,525p ✻ 0 ~ 255 dac3 A/D Ref Voltage Adjustment {BOTTOM] ✻ GVRT 0 ~ 255 dac2 A/D Ref Voltage Adjustment [TOP] BVRT 0 ~ 255 dac2...
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Electrical Adjustments Adjustment Item Initial Value Range Input source / Description HINOR_VALU_FAN2_MIN 0~255 FAN2 control minimum value, HighLand Normal HINOR_VALU_FAN2_MAX FAN2 control maximum value, HighLand Normal HINOR_VALU_FAN3_MIN FAN3 control minimum value, HighLand Normal HINOR_VALU_FAN3_MAX FAN3 control maximum value, HighLand Normal HIECO_TEMP_FAN1_MIN FAN1 temperature to start the control, HighLand Eco HIECO_TEMP_FAN1_MAX...
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Electrical Adjustments Adjustment Item Initial Value Range Input source / Description IMAGE_OUT_CS_SEL 0/0/0/0/0/0/0/0/0 0 or 1 001-b2 IMAGE_OUT_DEMUX 1/1/1/1/1/1/1/1/1 0 or 1 001-b1 IMAGE_OUT_THROUGH 0/0/1/1/1/1/1/0/0 0 or 1 001-b0 IMAGE_IN_TOTAL_H Same as G510~G517 0 ~ 2047 002/003 Read only IMAGE_IN_START_H 54/55/76/74 0 ~ 2047 004/005...
■ Troubleshooting No Power The possible causes of No Power are listed below. Please - The abnormality on the lamp ballast board was detected. check following and refer to the chapter “Power supply and The lamp ballast board outputs error signal (LAMP_DET) protection circuit”...
Troubleshooting No Picture The possible causes of No Picture are listed below. Please 3. No picture from DVI source. check following and refer to the chapter “Inputs & video sig- Check 5V power supply(5VDVI) at pins 6 and 7 of K10R nal processing stage”, “LCD panel driving stage”...
Troubleshooting No Sound Please check following and refer to the chapter “Audio signal 3. No audio output signal at speakers. processing circuit” in the Chassis Block Diagrams on the pre- Check audio signals at pins 13 and 8 of IC031 on the vious page.
■ Control Port Functions ● System Control & I/O Port Table (IC801) Name Function Name Function Polarity PA23/WRHH USB RESET USB reset signal Active L PE14/TIOC4C/DACK0/AH IC RESET Power Control w/o FAN and LAMP Active L PA22/WRHL SEPA_RESET Reset output for M66230 L: Reset PA21/CASHH Not used...
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Control Port Functions Name Function Name Function Polarity PD16/D16/IRQ0 PW_SW Not used PD15/D15 DATA15 Data Bus 15 PD14/D14 DATA14 Data Bus 14 PD13/D13 DATA13 Data Bus 13 PD12/D12 DATA12 Data Bus 12 PD11/D11 DATA11 Data Bus 11 PD10/D10 DATA10 Data Bus 10 PD9/D9 DATA9 Data Bus 9...
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Control Port Functions ● Parallel I/O Expander (IC1801, M66500FP) Name Function Name Function Polarity CG_FILTER Not used (Initial: L) DT_STB 5V ±0% A SW1 Audio SW 1 (SW1,SW2) = PC1:L, L PC2:H, L PC3:L,H A SW2 Audio SW 2 IP_PWR_DN IP Power down mode switch H: Use IP L: Not use IP IPSEL_CSA...
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Control Port Functions ● IIC Bus I/O Expander (IC5581, M62320FP) Port Functions Pin No. Name Function Action Serial Data output port (Not connected) IIC BUS SCL IIC BUS SDA FOCUS+ FOCUS + Active H FOCUS- FOCUS - Active H ZOOM+ ZOOM + Active H ZOOM-...
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Control Port Functions ● IIC Bus DA Converter (IC1531, M62399FP) Port Functions Name Function Name Function Polarity Reset input IIC BUS SCL IIC BUS SDA not use REF_B B White-Black level adj. REF_G G White-Black level adj. REF_R R White-Black level adj. VrefL DAC lower reference voltage input VrefU1...
■ Cleaning After long periods of use, dust and other particles will accumulate on the LCD panel, prism, mirror, polarized glass, lens, etc., causing the picture to darken or color to blur. If this occurs, clean the inside of optical unit. Remove dust and other particles using air spray.
■ Electrical Parts List MH7-XT1600, MJ7-XT1100 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 circuit diagram show components whose value have spe- cial significance to product safety.
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MH7-XT1600, MJ7-XT1100 Electrical Parts List Note: Parts order must contain Chassis No., Part No., and Descriptions. ● OUT OF CIRCUIT BOARD RC Board FN905 Cooling Fan Sensor Ballast Board Board FN902 Cooling Fan Power DC Board Main Board Power AC Board Audio Board...
■ Mechanical Parts List MH7-XT1600, MJ7-XT1100 Note: Parts order must contain Chassis No., Part No., and Descriptions. ● CABINET PARTS M1-b M1-a -97-...
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MH7-XT1600, MJ7-XT1100 Mechanical Parts List ● OPTICAL PARTS L18: For R-panel L19: For G-panel L20: For B-panel L3-a: For R-panel L3-b: For G-panel L3-c: For B-panel (Polarized Glasses) L3-d: For R-panel L3-e: For G-panel L3-f: For B-panel (Optical Flters) -98-...
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MH7-XT1600, MJ7-XT1100 Mechanical Parts List -99-...
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MH7-XT1600, MJ7-XT1100 Mechanical Parts List L1-b L1-a (Zoom) (Focus) -100-...
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MH7-XT1600, MJ7-XT1100 Mechanical Parts List L7 L21 CAUTION: Part must be placed in specified direction when replacing the optical parts. Please see “Optical Parts Disassemblies” for further instructions. -101-...