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Emerson 6420FE service manual Block Diagram, Crt/H.V

Models: 6420FE

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Page 25

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VIDEO SIGNAL

IC551 (V-DEFLECTION CONTROL)

MAIN CBA

CRT/H.V

			WF11	THERMAL	WF12
			WF11	PROTECTION	5
RAMP-OUT			7		5
RAMP-OUT			7
			AMP	5	4
			1	PULSE	3
V-RAMP-F/B				PULSE	3
V-RAMP-F/B				UP	WF9
TO				UP	WF9
TO					1
IF/VIDEO BLOCK			6	3
			6	3	CN571
	WF7	WF8			CN571
	WF7	WF8
	Q572	T572	Q571
H-DRIVE	H.DRIVE	T572
H-DRIVE	H.DRIVE		H.OUTPUT

TO POWER	PROTECT-4
TO POWER	DEF+B
SUPPLY BLOCK	DEF+B
SUPPLY BLOCK	+B
	+B
TO	PROTECT-1			T571 F.B.T.	FOCUS VR
TO	PROTECT-2
SYSTEM CONTROL	PROTECT-2				HV		ANODE
BLOCK	PROTECT-3				HV		ANODE
BLOCK					F


	X-RAY				S		FOCUS
	X-RAY						FOCUS
6-4	TP591	TP592	1		11		SCREEN
6-4			3		8
			5		10
			5
					7
					SCREEN VR
			4		9
					6
					WF10	WH501A		WH501B
						3	HEATER	3
						1	+200V	1
TO	FBP-IN
IF/VIDEO BLOCK	ACL
	ACL

JK1501

			WF3	WF15	WF4	WF14
		WH301B		Q1511		WF14
		WH301B		Q1511		Q1521
TO	RED	3		RED AMP		Q1521
	RED	3		RED AMP
	GREEN	4
IF/VIDEO BLOCK	GREEN	4				GREEN AMP
WH301A	BLUE	5					BLUE AMP
	BLUE	5					BLUE AMP
						WF5	Q1531
						WF5	WF13

DY551 D.Y.

V-

DRIVE

H-

DRIVE

ANODE

FOCUS

SCREEN

GND

R V501

GCRT

HEATER

. Block Diagram

L2401BLCRT

CRT CBA

CN1501

GND

Page 25

Image 25

Emerson 6420FE service manual Block Diagram, Crt/H.V

Contents

6420FE EWF2004 Table of Contents Important Safety NoticeDescription Condition Unit Nominal Limit SpecificationsDBµv DBµv AFT Pull In Range 10mV input MHz ±2.0 ±0.7Safety Precautions for TV Circuit Important Safety PrecautionsNot be Above 0.5 mA L6115IMPL6115IMP Precautions during Servicing Clearance Distance Safety Check after ServicingLeakage Current Test Standard Notes for Servicing How to Remove / Install Flat Pack-ICCircuit Board Indications Pb Lead Free SolderMachine With Iron WireMasking Flat Pack-IC Tape Tweezers With Soldering IronPin 1 of the Flat Pack-IC Is indicated by a mark InstallationPresolder Ground for Human Body Instructions for Handling SemiconductorsGround for Workbench IncorrectDisassembly Flowchart Cabinet Disassembly InstructionsDisassembly Method Reference Notes in the TableRear Cabinet Main CBA Rear CabinetCRT TV Cable Wiring Diagram How to set up the service mode Electrical Adjustment Instructions+B Adjustment Service modeGeneral Initial SettingBlack Stretch Control Adjustment F0 AdjustmentSD Check Mode Purity CheckSize Adjustment Position Adjustment10. V. Position Adjustment Software ResetWhite Balance Adjustment Cut-off AdjustmentMode Input Tape SpecFocus Adjustment Sub-Brightness AdjustmentPurity Adjustment Figures Convergence AdjustmentSystem BlockL2401BLIF IF/Video Block DiagramL2401BLA AudioCRT/H.V Block DiagramL2401BLP DiagramStandard Notes Schematic Diagrams / Cbas and Test PointsTolerance of Capacitors are noted with the following How to read converged lines Wire ConnectorsIs not consistent here Test Point InformationL2401SCM1 Main 1/4 Schematic DiagramL2401SCM2 Main 2/4 Schematic DiagramL2401SCM3 Main 3/4 Schematic DiagramMain 4/4 Ref No Position Main 4/4 & CRT Schematic DiagramBL2700F01012-1 Main CBA Top ViewMain CBA Bottom View Q1521 Q1521 Collector Base CRT CBA Top ViewQ1511 Q1511 Collector Base Q1531 BaseWF4 WaveformsCollector WF9L2401WI Wiring DiagramIC PIN Functions Pin Signal Name FunctionIC111 TV Micro Controller Judgement White Balance AdjustmentAFT Voltage Input Degaussing Coil ControlCabinet Exploded Views11-1 11-2 L2401CEX X-2 X-3 Tape Packing Tape 11-3 L2401PEX PackingComparison Chart of Models and Marks Mechanical Parts List20040405 12-1 L2401CA 20040405 13-1 L2401EL Electrical Parts ListElectrolytic CAP .33∝F/50V M CE1JMASDLR33 20040405 13-2 L2401EL20040405 13-3 L2401EL ConnectorsICS 20040405 13-4 L2401ELTransistor 2SC2120-YTPE2 20040405 13-5 L2401EL20040405 13-6 L2401EL 20040405 13-7 L2401EL SwitchesRCA Jack 1P AV-8.4-9W 20040405 13-8 L2401EL6420FE/EWF2004 L2401UB/L2404UE

MAIN CBA

CRT/H.V

WF7

WF8

. Block Diagram

L2401BLCRT

CRT CBA