Eiki LC-NB3E service manual Safety Instructions, Safety Precautions

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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. For continued product safety and protection of personnel injury, servicing should be made with qualified personnel.

The following precautions must be observed.

1:An isolation transformer should be connected in the power line between the projector and the AC line before any service is performed on the projector.

2:Comply with all caution and safety-related notes pro- vided on the cabinet back, cabinet bottom, inside the cabinet or on the chassis.

3:When replacing a chassis in the cabinet, always be certain that all the protective devices are installed properly, such as, control knobs, adjustment covers or shields, barriers, etc.

DO NOT OPERATE THIS PROJECTOR WITHOUT THE PROTECTIVE SHIELD IN POSITION AND PROPERLY SECURED.

4:Before replacing the cabinet cover, thoroughly inspect the inside of the cabinet to see that no stray parts or tools have been left inside.

Before returning any projector to the customer, the service personnel must be sure it is completely safe to operate without danger of electric shock.

PRODUCT SAFETY NOTICE

Product safety should be considered when a component replacement is made in any area of the projector.

Components indicated by mark in the parts list and the schematic diagram designate components in which safety can be of special significance. It is, therefore, particularly recommended that the replacement of there parts must be made by exactly the same parts.

SERVICE PERSONNEL WARNING

Eye damage may result from directly viewing the light produced by the Lamp used in this equipment. Always turn off Lamp before opening cover. The Ultraviolet radiation eye protection required during this servicing.

Never turn the power on without the lamp to avoid electric-shock or damage of the devices since the stabilizer generates high voltages(15kV - 25kV) at its starts.

Since the lamp is very high temperature during units operation replacement of the lamp should be done at least 45 minutes after the power has been turned off, to allow the lamp cool-off.

DO NOT ATTEMPT TO SERVICING THE

REMOTE CONTROL UNIT.

Laser Beam may be leaked out when in disassemble the Unit. As the Laser Beam used in this Remote con- trol unit is harmful to the eyes.

CAUTION

LASER RADIATION

DO NOT STARE INTO BEAM

MAX. OUTPUT: 1mW

WAVE LENGTH: 650 ±20nm

CLASS II LASER PRODUCT

This product is complied with 21 CFR part 1040.10

LASER RADIATION

DO NOT STARE INTO BEAM CLASS 2 LASER PRODUCT LASER-STRAHLING

NICHT IN DEN STRAHL BLICKEN LASER KLASSE 2

IEC60825-1, Am. 1 1997

MAX OUTPUT (

) : 1 mW

WAVE LENGTH (

) : 650±20nm

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Contents Chassis No. MM8-NB3E00 Model No. LC-NB3EContents Safety Precautions Safety InstructionsSpecifications Optical Adjustments Electrical Adjustments Adjustments after Parts ReplacementFuse Circuit ProtectionsRecommendation Mechanical Disassemblies Cabinet Top and Control Panel removalMain Board removal AV, AV Sub Board and Speaker removal Front Panel and R/C Board removalAV board AV Sub board Lamp Ballast Unit removal Filter Board removalFilter board Power Box Cover and FansFN901, FN906 removal 1Optical Unit removalAB B 2Optical Unit removal Power and P.F. Board removalInterlock Switch lever Fan FN905 removalOff from the Cabinet Bottom Fan duct top FN904 FN903 FN902 Integrator Lens-In disassembly Optical Parts DisassembliesProjection Lens removal Condenser Lens-Out disassembly Condenser lens disassemblyPolarized Glass-In removal Relay Lens-Out disassemblyOptical Unit Top removal Polarized Glass-Out removalKey No. Description Locations and DirectionsLCD Panel/Prism Ass’y removal LCD Panel/Prism Ass’y ReplacementImportant Notice on LCD Panel/Prism Assy Replacement Mounting ProcedureOrder Replacement Lamp Lamp ReplacementHow to reset Lamp Replace Counter How to check Lamp Replace CounterSlot B Optical AdjustmentsContrast adjustment Before AdjustmentGreen b Slot B Moving of slot B Slot D Moving of Slot D Condenser Lens adjustmentCyan a Slot B Moving of slot B Moving of slot D Condenser Lens-Out adjustmentRelay lens-Out adjustment White a Slot B a Moving of slot BSlot D Moving of slot D IC1801 is not defective Electrical AdjustmentsAdjustment Condition Output Voltage adjustmentFan Voltage adjustment Pedestal adjustmentSignal Center Adjustment NRS adjustmentSignal Center adjustment Black Level adjustmentGain Adjustment PC Offset adjustmentPC Gain adjustment Offset AdjustmentCommon Center adjustment AV Gain adjustmentGamma Shift adjustment White Balance adjustmentService Adjustment Data Table Adjustment Item Initial Value Range Description Initial Value Range Description Group 500 ADC IC301 Troubleshooting No PowerAbnormality occurs on the power circuit Power Board Main Board No picture from all of sources No PictureNo picture from Video source No picture from both of Video and Computer sourcesAV/PC-RGB-SW Video Signal processing diagramsNo Sound Lens Motor ProblemsSystem Control & I/O Port Table IC801 Control Port FunctionsMD2 IIC Bus I/O Expander IC1851 Port Functions IIC Bus I/O Expander IC2181 Port FunctionsIIC Bus DA Converter IC1831 Port Functions IIC Bus DA Converter IC2161 Port Functions IIC Bus DA Converter IC1581 Port FunctionsIIC Bus DA Converter IC2571 Port Functions Waveforms VIDEO-INDrive TP52R/TP201R Drive TP52G/TP201G Drive TP52B/TP201G Ballast SW TP28L Sync OUT IC4101-29 Sync OUT IC4101-28Sync in TP205 Sync Drive TP62H Sync Drive TP62V DHS Tpdhs DVS TpdvsCleaning with air spray Disassembly Cleaning CleaningIC Block Diagrams BA7078AF Selector, IC6241 CXA2101AQ RGB Matrix, IC4101 IC Block Diagrams IC Block Diagrams ML60851 USB I/F, IC9801 M62393 D/A, IC2571 TB1274AF Video Decoder, IC1101 TA1318N AFC Detector, IC6171 IC Block Diagrams Page Read Description in the parts list Electrical Parts ListOUT of Circuit Board Assemblied Boards BoardKEY SW Board Power Board 610 299 7293 ASSY,PWB,POWER MM8B1AA0B10C352DA Fusible RES 22 JH Line Filter Board 610 294 1708 ASSY,PWB,LINE Filter MS6AAV Board IC LT1399CS FILTER,EMI 100MHZ AV SUB Board 610 297 1804 ASSY,PWB,AV SUB MD8A1AA0B10C3700B Main Board 610 297 1828 ASSY,PWB,MAIN ME8B1AA0B10C371AA IC TB1274AF IC AD8183ARU C2103 C406 C568 Network 0X4 1/16W R152 R2549 R3544 R457 FILTER,LP 7MHZ Accessories Temp Board610 297 1873 ASSY,PWB,TEMP ME8A 1AA0B10C3710B Key No. Part No Description Mechanical Parts List Cabinet Parts Optical Parts Optical Parts List 67 Red Green Blue Red 52-a Optical Parts List MM8-NB3E00 MM8-NB3E00 MM8-NB3E00 Key to better communications Canada