Toshiba TW40F80 manual System Block Diagram

Page 22

7. SYSTEM BLOCK DIAGRAM

QA02

Memory 24LC08BI/P

SDA SCL

56

V.sync pulse

Remote controller output

Audio mute

Speaker mute

QA01

	TMP87CS38N-XXXX
		SDA 1	38
		SCL 1	37
		RMT	35	Remote
		RMT	35	controller
				controller
				light
11	SCL 0			receiving
11	SCL 0			unit
12	SDA 0			unit
12	SDA 0
		KEY-A	17	Key
40	INT4	KEY-B	18	switch
40	INT4	KEY-B	18
27	VSYNC	RST	33
		RST	33	Power
		VDD	42	Power
		VDD	42	supply
		GND	1	circuit
3	RMT OUT	VSS	21

POWER 7

ACP 41

LED 8

4MUTE

5SP MUTE

		XIN	31	8MHz
				8MHz
		XOUT	32	Clock
	DATA	SGV	19	Signal
25	DATA	SGA	20	output
22	CLK

HO01

Main U/V tuner ELA12L

SDA SCL

HY01

Sub U/V tuner

EL922L

SDA SCL

Q501

VCD TA1222AN

SDA SCL 27 28

HO02

IF/MPX/A.PRO

MVUS5345

SDA SCL 21 20

QV01

AV SW TA1218N

SDA SCL 24 25

DPC unit

23	CS			Main screen
24	BUSY	SYNC-AV1
24	BUSY	SYNC-AV1	36		Sync det.
26	RESET	AFT1 IN	16		AFT det.
				Sub screen
		SYNC-AV2
		SYNC-AV2	13		Sync det.
		AFT2 IN	2		AFT det.

QR60QH30

OSD				C/C,EDS
MB90091				XC144144P
CLK DATA CS BUSY				SDA SCL
54	55	56	58	14	15
		QX01		Q701
		WAC		CONVER
		TC9097F		T7K64
		SDA SCL		SDA SCL
		60	59	44	43

DATA CLK

QZ01

YCS

TC9086F

SDA SCL 20 19

QY91

DUAL micro-

processor

SDA SCL

QK06

AUTO LIVE

SDA SCL 40 39

QY03

POP TC9092F

Fig. 3-5

22

Image 22

Contents TW40F80 Contents Terminal FUNCTION, Description and Block Diagram Wide Aspect Conversion Circuit Failure AnalysisSection X Deflection Distortion Correction Circuit Section XI Digital Convergence CircuitOutline Merits of BUS System Section FeatureImproved Serviceability Reduction of Parts CountSpecifications Chassis ModelFront View Video 3 InputsRear View IN-VIDEORemote Control View 100Chassis Layout Starsight Newosd FRO. SurrConstruction of Chassis Outline Major FeaturesSection II TUNER, IF/MTS/S. PRO Module Circuit Block RF AGCAudio Multiplex Demodulation Circuit A.PRO block diagram A.PRO Section Audio ProcessorConfiguration of the audio circuit and signal flow are given POP Tuner Terminal No NameOperation of Channel Selection Circuit Microcomputer SDA SCLMicrocomputer Terminal Function Microcomputer Terminal Name and Operation Logic Terminal Name Function In/Out Logic RemarksEEPROMQA02 On Screen FunctionSDA System Block Diagram Local KEY Detection Method Local key assignment FunctionCode Function Remote Control Code AssignmentTo TV set Custom codes are 40-BFH TV set for North U.S.A Code Function Optional Setting for Each Model OPT0 OPT1 Models HEXTest Signal Selection Entering to Service ModeService Adjustment Contents to be Confirmed by Customer Failure Diagnosis ProcedureExecuting Self Diagnosis Function Understanding Self Diagnosis Indication Self CheckClearing method of self diagnosis result TV does Not Turned on Troubleshooting ChartYES No Acception of KEY-IN No Picture Snow NoiseMemory Circuit Check No Indication On ScreenSection IV DVD Switch Circuit DVD Switch Block Diagram Outline Circuit Operation ConfigurationSection V WAC Circuit Outline OperationWide aspect conversion unit block diagram PB6348 Pin Function Pin function of TC9097F QFP 80 pinNames and functions of TC9097F Name FunctionVFL2 Block Diagram TC9097F system block diagramWide Aspect Conversion Circuit Failure Analysis Procedures E2PROM OK?Adjustment Method Raster Horizontal OnePrinciples of Operation Section VI Dual Circuit OutlineScreen multi-search process System Component Diagram of Dual Unit Video/Color/Deflection Process Section OSD Sub Screen Process Section Sub screen process sectionMain/Sub Screen Superimposing Section Main/Sub screen superimposing sectionQY01 Main IC Terminal FUNCTION, Description and Block DiagramDiagram MPC1832GTQY01 mPC1832GT pin layout QY03 TC9092AF internal block diagram QY03 TC9092AF pin layout QY03 TC9092AF pin list No Pin name Pin function CKWMRD1 QY10/QY11 M518221-30ZS internal block diagram Configuration Circuit Description Section VII 3-DIMENSION Y/C Separator Circuit OutlineCircuit Description Terminal description PZ01 Section Viii Vertical Output Circuit Outline Theory of OperationSawtooth Waveform Generation Output CircuitActual Circuit Circuit OperationOutput Output stage power supply voltage Character Correction Up-and Down-ward Extension Correction Linearity Characteristic CorrectionProtection Circuit for V Deflection Stop Up-and Down-ward Linearity BalanceUZ22BSD +35V Over Current Protection CircuitTheory of Operation UZ11BSBRaster Position Switching Circuit KetsuHorizontal Drive Circuit SignalSection IX Horizontal Deflection Circuit Outline Basic Operation of Horizontal DriveOn period OFF period Operation of Basic Circuit Signal DEF/POWER PCBHorizontal Output Circuit FBTT3~t4 Description of the basic circuit T1~t2T2~t3 T4~t6Linearity Correction LIN Amplitude CorrectionCurve Correction S Capacitor Left-right Asymmetrical Correction LIN coil Linearity coilOperation Theory White Peak Bending Correction CircuitOutline EHTBlanking Low Voltage Protection Gate ProtectorABL High Voltage Generation CircuitAFC High Voltage DPC Circuit Regulator2. +35V 1. +210VHigh Voltage CR-BLOCK High Voltage CircuitAnode FBT CR-BLOCK E H ActualED’ RAY Protection Circuit 23 X-RAY protection circuitOver Current Protection Circuit Functions and Features Block DiagramDiode Modulator Circuit OUTActual Circuit Later Half Scanning Period Basic Operation and Current PathFirst Half Scanning Period First Half of Scanning Period Later Half of Flyback PeriodP.T Section XI Digital Convergence Circuit Outline Prom ResetMemory PLLPicture Adjustment Service Mode Entering/Exiting ModeFirst screen Second screen Initial screenSfull Key function of remote control unit ENTEach Screen Adjustment Method Operation procedureNormal/Full Theater Wide1 Theater Wide 269.5 When Convergence Unit is Replaced When CRT is ReplacedCase Study Adjusting Procedure in Replacing CRT TroubleshootingAdjusting Procedure in Replacing Convergence Unit/Main Def Convergence Output Circuit Convergence Block Diagram Convergence Troubleshooting Chart Main Unit