Daewoo 21Q2, 21Q1, 14T2, 21Q4, 14Q2, 20Q1, 14Q1, 21T2, 20Q3, 14T1, 20T2, 21T1, 14Q3, 20Q2, 20T1 Audio, Rgb

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TDA8374A (Single chip TV Processor for Negative modulation IF ) TDA8374 (Single chip TV Processor for Negative & positive modulation IF)

(1)General Description

The TDA8374(A) is I2C-bus controlled single chip TV processors which are intended to be applied in PAL/NTSC television receiver.

The IC is mounted in a S-DIL 56 envelope.

(2)Feature

IF

-Vision IF amplifier with high sensitivity and good figures for differential phase and gain

-PLL demodulator with high linearity offering the possibility for (single standard) intercarrier stereo audio application .

-Alignment PLL via I2C

-[TDA8374] Multistandard IF with negative and positive modulation, switchable via I2C

AUDIO

-Alignment free multi standard PLL audio demodulator (4.5 to 6.5 MHz.)

-Mono volume control

Video

-Integrated luminance delay line

-Integrated chroma trap and bandpass filters (auto calibrated)

-Asymmetrical peaking circuit in the luminance channel

-Black stretching of non standard CVBS or luminance signals

Colour

-SECAM interface for application with SECAM add-on TDA8395.

RGB

-RGB control (brightness, contrast, saturation)

-Black current stabilization and white point adjustment

Input / Output

-Flexible video source select with CVBS input for the internal signal and two external video inputs(one switchable for CVBS or Y/C).

-The output signal of the video source select is externally available ( also as CVBS when Y/C input is used).

-External audio input.

-Linear RGB input with fast blanking.

Synchronization and Deflection

-Horizontal synchronization with two control loops and alignment free horizontal oscillator.

-Slow start and slow stop of the horizontal drive output to enable low stress start-up and switch-off from the line circuit at nominal line supply voltage.

-Vertical count-down circuit for stable behavior with provisions for non-standard signals.

-Vertical geometry control.

-Vertical drive optimized for DC coupled vertical output stages.

Control

-Full I2C bus control, as well for customer controls as for factory alignment.

-All automatic controls have an option for forced mode.

Power consumption

-Low power consumption (900 mW at 8.0 Volts).

Packaging

-SDIL-56 (Shrinked Dual In Line, 56 pins).

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Contents Chassis CP-370 Contents Specifications RAY Radiation Precaution Safety InstructionFocus Alignment InstructionsScreen White BalanceVertical S-CORRECTION Geometry Vertical CenterVertical Size Vertical SlopePage IC Description Plastic 42 Ysdp Pins Package Block Diagram Cmos Compatible I/O PinsFeature Acquisition DisplaySynchronization Controller Sdip 52 package Supply voltage Block DiagramPin Description Pin Name Symbol DescriptionCvbs PIN Symbol Description FeaturesRGB AudioBlock Diagram Sound if Input Pin Description NameName Description Vertical GuardBeam current limitinq Luminance EAST-WEST Drive TDA4665Base Band Delay Line 3Block Diagram Pin DescriptionPIN Description TDA8395 Secam Decoder Symbol PIN DescriptionTDA6106Q Video Output Amplifier Block Diagram Pin DescriptionVeco I802 PC817TDA8356 DC-coupled vertical deflection circuit TDA7056 BTL Audio Output Amplifier 1 Speaker Model 3Block Diagram 4Pin DescriptionPIN Name Symbol Description STR-S5707 Hybrid IC for a Switching RegulatorRating Unit Symbol Rating UnitMIN TYP MAX Ta=25 Description TerminalTDA8138 5.1V+12V regulator with Disable and Reset TDA 1519BAUDIO Output Amplifier 2 Speaker Model PCA84C 122AIC Remocon PIN Signal DescriptionCircuit Description Vertical synchronization Geometry processingColour decoder Tuning Integrated video filtersRGB output and black current stabilization Base band delay line TDA4665 Horizontal deflection TDA8356 vertical deflectionOscillator, F/B terminal voltage Pin Power Supply STR-S5707Video amplifiers VIN terminal, start-up circuitThermal shutdown circuit Drive circuitOCP over-current protection function Latch circuitNo Raster Trouble Shooting ChartsNo Pictureraster OK No Vertical Scaningone Horizontal Line on Screen No Color Abnormal Normal No Soundpicture OKNo ON-SCREEN Displaypicture OK No External A/VRF OKRemote Control Unit Troublelocal Control OK Line Voltage IC DC Voltage ChartsInput signal User’s control conditionI503TDA8395 I501TDA8374AI301TDA8356 I502TDA4665LOC PART-CODE PART-NAME Part Type Remark Electrical Parts ListPTSPPWA499 Speaker AS DTC-14Q1VM IC AMP 5PTPS60MB Filter Cera TPS 6.0MBEFC-S6ROME3 CEXF1H229V Electro CEXF1H470V Electro 5PXPS45MB Filter Cera TPS-4.5MB Trap Tapping CCZB1H181K Cera DUZ5R1BM Diode Zener Coil Peaking Wire Copper AWG22 1/0.65 TIN Coating R530 RD-AZ203J R703 RD-AZ272J # Front A/V Part List Option Conn ASS’Y LOC Part Name Difference Part ListLOC Part Name Model Remark CP-370 Inch Difference Part ListPage Page Page Page Page Page Page Page Page Page Page