Toshiba TW40F80 manual Main IC Terminal FUNCTION, Description and Block Diagram, QY01, MPC1832GT

Page 50

CVBS	Vcc Separate / composite SW

1500pF 4.7μF

Separate

/ color

0.47μF

0.1μF

0.1μF

1000pF

4.43MHz 3.58MHz

+ 6.8KΩ

Contrast Sub color

+

1MΩ

control

control

1MΩ

43kΩ

1μF

Vcc

Vcc

Clamp pulse

+

+

18pF

18

+ 1

pF

22μF

1.8 KΩ

1.8 KΩ

0.22μF

B

G

R

3.58 / 4.43

180kΩ

100Ω

20kΩ

20kΩ

0.22μF

4700pF

PAL / NTSC

0.22μF

0.1μF

42

41

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

Fig.

6-5

Mode SW

QY01

3.58MHz / 4.43MHz

Separate / Composite SW,

Filter

RGB output

ACC amp., Sub color control

fH Adj.

VCXO. PAL SW

Sync. sepa.

Clamp

mPC1832GT

fsc BPF

APC killer

wave form det.

PAL / NTSC

matrix

fsc

IDENT D det.

V. filter

trap

50

Separate / composite SW

R-Y, B-Y

Tint control

demodulation

H. sync det.

internal block

H / V count

Delay

Contrast

L P F

Color control

control

321H VCO

AFC wave

HD, VD, blanking pulse,

Y, R-Y, B-Y output

Y, R-Y, B-Y input clamp

diagram

form det.

killer output

1

2

330Ω

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20 0.1μF 21 0.1μF

0.015μF

2.2kΩ

50 / 60

Vcc

0.22μF

0.22μF

0.22μF

Killer det.

BLK

HD

VD

Y

R-Y

B-Y

R-Y

B-Y

8.2kΩ

0.1μF

0.1μF

20kΩ

+

+

Color control

500pF

+

220pF

820pF

22μF

22μF

2.7kΩ

4.7μF

Tint control

Vcc

20kΩ

MAIN IC

5. TERMINAL FUNCTION, DESCRIPTION AND BLOCK DIAGRAM OF

Image 50

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 RemarksSDA On Screen FunctionEEPROMQA02 System Block Diagram Local KEY Detection Method Local key assignment FunctionTo TV set Remote Control Code AssignmentCode Function Custom codes are 40-BFH TV set for North U.S.A Code Function Optional Setting for Each Model OPT0 OPT1 Models HEXService Adjustment Entering to Service ModeTest Signal Selection Executing Self Diagnosis Function Failure Diagnosis ProcedureContents to be Confirmed by Customer Understanding Self Diagnosis Indication Self CheckClearing method of self diagnosis result YES Troubleshooting ChartTV does Not Turned on 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 OneScreen multi-search process Section VI Dual Circuit OutlinePrinciples of Operation 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 Circuit Description Section VII 3-DIMENSION Y/C Separator Circuit OutlineConfiguration Circuit 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~t6Curve Correction S Capacitor Amplitude CorrectionLinearity Correction LIN 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 RegulatorHigh Voltage 1. +210V2. +35V Anode High Voltage CircuitCR-BLOCK ED’ ActualFBT CR-BLOCK E H RAY Protection Circuit 23 X-RAY protection circuitOver Current Protection Circuit Functions and Features Block DiagramDiode Modulator Circuit OUTActual Circuit First Half Scanning Period Basic Operation and Current PathLater Half Scanning Period P.T Later Half of Flyback PeriodFirst Half of Scanning Period Section XI Digital Convergence Circuit Outline Prom ResetMemory PLLPicture Adjustment Service Mode Entering/Exiting ModeSfull Initial screenFirst screen Second screen Key function of remote control unit ENTNormal/Full Operation procedureEach Screen Adjustment Method Theater Wide1 Theater Wide 269.5 Case Study When CRT is ReplacedWhen Convergence Unit is Replaced Adjusting Procedure in Replacing Convergence Unit/Main Def TroubleshootingAdjusting Procedure in Replacing CRT Convergence Output Circuit Convergence Block Diagram Convergence Troubleshooting Chart Main Unit