Eiki LC-NB3E service manual IC301

Page 34

Electrical Adjustments

Test Points and Locations

●MAIN BOARD

TP11SC

TP3551

K25R

TP25R1 TP25R2

TP12V2

TP3581

TP12V1

		TP52R	TP52G
TP11SY			TP52B
	TP62V
TP11CV		TP62H
TP25G1	TP11PB	TP201G
TP25G2	TP11PR		TP201B
TP25G2			TP201R
			TP201R
K25G		IC4101	TP205
K25G			TP205

K25B

IC301

TP25B2

TP25B1

TPDVS

TPDCLK

TPDHS

IC401

IC801

K8P

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Image 34

Contents Model No. LC-NB3E Chassis No. MM8-NB3E00Contents Safety Instructions Safety PrecautionsSpecifications Adjustments after Parts Replacement Optical Adjustments Electrical AdjustmentsCircuit Protections FuseRecommendation Cabinet Top and Control Panel removal Mechanical DisassembliesMain Board removal Front Panel and R/C Board removal AV, AV Sub Board and Speaker removalAV board AV Sub board Filter Board removal Lamp Ballast Unit removalFilter board 1Optical Unit removal Power Box Cover and FansFN901, FN906 removalAB B Power and P.F. Board removal 2Optical Unit removalFan FN905 removal Interlock Switch leverOff from the Cabinet Bottom Fan duct top FN904 FN903 FN902 Optical Parts Disassemblies Integrator Lens-In disassemblyProjection Lens removal Condenser lens disassembly Condenser Lens-Out disassemblyRelay Lens-Out disassembly Polarized Glass-In removalPolarized Glass-Out removal Optical Unit Top removalLocations and Directions Key No. DescriptionMounting Procedure LCD Panel/Prism Ass’y ReplacementImportant Notice on LCD Panel/Prism Assy Replacement LCD Panel/Prism Ass’y removalHow to check Lamp Replace Counter Lamp ReplacementHow to reset Lamp Replace Counter Order Replacement LampBefore Adjustment Optical AdjustmentsContrast adjustment Slot BCondenser Lens adjustment Green b Slot B Moving of slot B Slot D Moving of Slot DCondenser Lens-Out adjustment Cyan a Slot B Moving of slot B Moving of slot DWhite a Slot B a Moving of slot B Relay lens-Out adjustmentSlot D Moving of slot D Electrical Adjustments IC1801 is not defectivePedestal adjustment Output Voltage adjustmentFan Voltage adjustment Adjustment ConditionBlack Level adjustment NRS adjustmentSignal Center adjustment Signal Center AdjustmentOffset Adjustment PC Offset adjustmentPC Gain adjustment Gain AdjustmentWhite Balance adjustment AV Gain adjustmentGamma Shift adjustment Common Center adjustmentService Adjustment Data Table Adjustment Item Initial Value Range Description Initial Value Range Description Group 500 ADC IC301 No Power TroubleshootingAbnormality occurs on the power circuit Power Board Main Board No picture from both of Video and Computer sources No PictureNo picture from Video source No picture from all of sourcesVideo Signal processing diagrams AV/PC-RGB-SWLens Motor Problems No SoundControl Port Functions System Control & I/O Port Table IC801MD2 IIC Bus I/O Expander IC2181 Port Functions IIC Bus I/O Expander IC1851 Port FunctionsIIC Bus DA Converter IC1831 Port Functions IIC Bus DA Converter IC1581 Port Functions IIC Bus DA Converter IC2161 Port FunctionsIIC Bus DA Converter IC2571 Port Functions VIDEO-IN WaveformsDrive TP52R/TP201R Drive TP52G/TP201G Drive TP52B/TP201G Sync Drive TP62H Sync Drive TP62V DHS Tpdhs DVS Tpdvs Sync OUT IC4101-29 Sync OUT IC4101-28Sync in TP205 Ballast SW TP28LCleaning Cleaning with air spray Disassembly 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 Electrical Parts List Read Description in the parts listOUT of Circuit Board Board Assemblied BoardsKEY SW Board 610 299 7293 ASSY,PWB,POWER MM8B Power Board1AA0B10C352DA Fusible RES 22 JH 610 294 1708 ASSY,PWB,LINE Filter MS6A Line Filter BoardAV Board IC LT1399CS FILTER,EMI 100MHZ 610 297 1804 ASSY,PWB,AV SUB MD8A AV SUB Board1AA0B10C3700B 610 297 1828 ASSY,PWB,MAIN ME8B Main Board1AA0B10C371AA IC TB1274AF IC AD8183ARU C2103 C406 C568 Network 0X4 1/16W R152 R2549 R3544 R457 FILTER,LP 7MHZ Temp Board Accessories610 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