Video Signal processing diagrams, Av/Pc-Rgb-Sw | Eiki LC-NB3E

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			IC5211							IC5241
ANALOG		RGB-AMP.							AV/PC-RGB-SW
		3	2	15					R	8			TP52R		IC5271	R	TP201R
RGB		3	2	15					G	8			TP52R		IC5271	R	TP201R
RGB		7	5	12					B	10	20									7
		11	7	10				R	B	12			TP52G		IC5281	G	TP201G
								R	R	12	18		TP52G		IC5281	G	TP201G			15			GB00-7
										1	18									15
								G					TP52B			B	TP201B
								G	G				TP52B		IC5291	B	TP201B				IC201		GBE0-7
								B	G	3	16									22	IC201		GG00-7			IC301
								B	B	5											A/D		GR00-7			IC301
																							GGE0-7
										22			IC6171			TP205							GRE0-7			SCAN
													IC6171		IC251										CONVERTER
											PC: H		AFC 13		HAFC		HSYNC								CONVERTER
															HAFC		HSYNC			40					SYSTEM
																				40
											AV: L		DET
											AV: L		DET		IC5251										CONTROL
					IC6241					AV/PC			16 17 1	2	IC5251										CONTROL
										AV/PC					AV/PC			IC6271
											IC6251				AV/PC			IC6271
			IC6211		SYNC DET.						IC6251				SYNC-SW			BUFFER									323
H-SYNC		15				2				H	INVERTER											TP62H		H			244
H-SYNC		16				2				H	1	12	H		1			2		3			HS	H	34
						3	13				1	12	H		1	15		2		3			HS		34
V-SYNC		19								V					2	15						TP62V
		19				5									2									V
		20				5							V										VS
	K10T	20	IC6221				11				5	8	V		13	14		5		6					133
		K3T					11				5	8			13	14		5		6
		K3T													12												240
																10 11
AV BOARD			MAIN BOARD														AV/PC		PC: H
																			PC: H
														H					AV: L
														H
														V
																									AV-RGB
	K10U	K3U	TP11SY				13 14		9		IC6101			VSYNCHD					55 56						IC3101
	K10U	K3U	TP11SY				13 14		9		13		HSYNCHD	VSYNCHD					55 56						IC3101
			TP11SC							AV_HSYNC INVERTER
										AV_VSYNC		8
												8
	Y/C				Y/C	43			4		11	4												BLANKING
S-VIDEO	Y/C	39			Y/C	43			4		1	12					66							BLANKING
		39				44					1
		41				44																R
	S_SW		TP11PR		Cr	17	IC1101				5	10	HS_OUT				2965	IC4101			39	R			1	15	IC3121
	S_SW		TP11PB			17	VIDEO						HS_OUT				28	RGB				G				15	IC3121
			TP11PB		Cb		VIDEO			Y			VS_OUT				28	RGB			37	G			3
					Cb	18 DECODER 21				Y			VS_OUT				69	MATRIX			37	B			3	4	IC2131
				TP11CV						Cb											35	B			13
				TP11CV		19			22	Cb							68				35				13		IC3141
						19			22								68								2	14	IC3141
					CV/Y				23	Cr							67								5	9,10
							5	7	23								67	73	74	75					12	9,10
							5	7										73	74	75
Pr/Cr													Pr
Pr/Cr		51
		52
Pb/Cb		49											Pb
		49
		50
							Y	C					Y
													Y
CrSW	CbSW																								PC: H
CrSW	CbSW						9	7																	AV: L	AV/PC
																									AV: L

		45			CV		IC2101																		SYNC_SW
VIDEO/Y		45				2	DIGITAL																		SYNC_SW
VIDEO/Y		46				2	DIGITAL
							COMB																		BLKC_DC
	IC5161						FILTER
		35						C_SWIN												Component-In: H					C_SWIN
		36						C_SWIN
		36
		33																				S-In: H			S_SW
		34																							S_SW
		34

TP25B1

K25BB

IC501

BS&H_B

IC401

DBB0-9

IC1401

DIGITAL

TP25G1

DB0-9

DIGITAL

DGB0-9

COLOR

DGB0-9

IC531

K25GG

DG0-9

BRIGHTER

DGA0-9

UNIFORMITY

DR0-9

DRA0-9

S&H_G

CONTROL

CORRECTION

G

TIMING

IC3531

CONTROL

5,4 9,1

G_LEVEL

6,7 13

DRB0-9

IC3551

SHIFT

TPDHS

TP3551

NRS

22

TPDVS

DHS/DVS

TP25R1

3

6

IC561

TPCLK

TURBO_1

R

DCLK

S&H_R

K25RR

IC3561

IC1581

RGT

R/B_LEVEL

SHIFT

D/A

2

14

DWN

22

3

19

3

IC2571

NRS

7

TP3581

D/A

VCOM

IC3581

5

2

7

NRS

3

12

13

R

G

B

IC2161
D/A				BLANK_SW
D/A
4,5,6	15							IC801
4,5,6	15
7
7					SCL2_5
8	13				SDA2_5		79,78	SUB
8	13				SDA2_5		79,78	SUB
8								CPU
								CPU
9,18,19


11	2
	2
12	3	IC2181
12		IC2181
				I/O
				I/O

B-LCD PANEL

G-LCD PANEL

R-LCD PANEL

Video Signal processing diagrams

Troubleshooting

Image 38

Eiki LC-NB3E service manual Video Signal processing diagrams, Av/Pc-Rgb-Sw

Contents

Model No. LC-NB3E Chassis No. MM8-NB3E00 Contents Safety Instructions Safety Precautions Specifications Adjustments after Parts Replacement Optical Adjustments Electrical Adjustments Circuit Protections Fuse Recommendation Main Board removal Mechanical DisassembliesCabinet Top and Control Panel removal AV board AV Sub board AV, AV Sub Board and Speaker removalFront Panel and R/C Board removal Filter board Lamp Ballast Unit removalFilter Board removal AB B Power Box Cover and FansFN901, FN906 removal1Optical Unit removal Power and P.F. Board removal 2Optical Unit removal Off from the Cabinet Bottom Fan duct top FN904 FN903 FN902 Interlock Switch leverFan FN905 removal Projection Lens removal Integrator Lens-In disassemblyOptical Parts Disassemblies Condenser lens disassembly Condenser Lens-Out disassembly Relay Lens-Out disassembly Polarized Glass-In removal Polarized Glass-Out removal Optical Unit Top removal Locations and Directions Key No. Description Mounting Procedure LCD Panel/Prism Ass’y ReplacementImportant Notice on LCD Panel/Prism Assy Replacement LCD Panel/Prism Ass’y removal How to check Lamp Replace Counter Lamp ReplacementHow to reset Lamp Replace Counter Order Replacement Lamp Before Adjustment Optical AdjustmentsContrast adjustment Slot B Condenser Lens adjustment Green b Slot B Moving of slot B Slot D Moving of Slot D Condenser Lens-Out adjustment Cyan a Slot B Moving of slot B Moving of slot D Slot D Moving of slot D Relay lens-Out adjustmentWhite a Slot B a Moving of slot B Electrical Adjustments IC1801 is not defective Pedestal adjustment Output Voltage adjustmentFan Voltage adjustment Adjustment Condition Black Level adjustment NRS adjustmentSignal Center adjustment Signal Center Adjustment Offset Adjustment PC Offset adjustmentPC Gain adjustment Gain Adjustment White Balance adjustment AV Gain adjustmentGamma Shift adjustment Common Center adjustment Service Adjustment Data Table Adjustment Item Initial Value Range Description Initial Value Range Description Group 500 ADC IC301 Abnormality occurs on the power circuit TroubleshootingNo Power Power Board Main Board No picture from both of Video and Computer sources No PictureNo picture from Video source No picture from all of sources Video Signal processing diagrams AV/PC-RGB-SW Lens Motor Problems No Sound Control Port Functions System Control & I/O Port Table IC801 MD2 IIC Bus DA Converter IC1831 Port Functions IIC Bus I/O Expander IC1851 Port FunctionsIIC Bus I/O Expander IC2181 Port Functions IIC Bus DA Converter IC2571 Port Functions IIC Bus DA Converter IC2161 Port FunctionsIIC Bus DA Converter IC1581 Port Functions Drive TP52R/TP201R Drive TP52G/TP201G Drive TP52B/TP201G WaveformsVIDEO-IN Sync Drive TP62H Sync Drive TP62V DHS Tpdhs DVS Tpdvs Sync OUT IC4101-29 Sync OUT IC4101-28Sync in TP205 Ballast SW TP28L Cleaning Cleaning with air spray Disassembly Cleaning IC 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 list OUT of Circuit Board KEY SW Board Assemblied BoardsBoard 1AA0B10C352DA Power Board610 299 7293 ASSY,PWB,POWER MM8B Fusible RES 22 JH AV Board Line Filter Board610 294 1708 ASSY,PWB,LINE Filter MS6A IC LT1399CS FILTER,EMI 100MHZ 1AA0B10C3700B AV SUB Board610 297 1804 ASSY,PWB,AV SUB MD8A 1AA0B10C371AA Main Board610 297 1828 ASSY,PWB,MAIN ME8B IC TB1274AF IC AD8183ARU C2103 C406 C568 Network 0X4 1/16W R152 R2549 R3544 R457 FILTER,LP 7MHZ 610 297 1873 ASSY,PWB,TEMP ME8A 1AA0B10C3710B AccessoriesTemp Board 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