Daewoo DTZ-2481, DTZ-29U7/U3, DTZ-2881/28W8, DTY-21U7/21B4 Corner B & Corner T EW Trapez, 7 AGC

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CP-520/520A/520F Service Manual

HOR WIDTH

adjust for 93% overscan.

PARABOLA

CORNER B & CORNER T

EW TRAPEZ

3.7.7 AGC

-Make sure option bits are correct for the tuner fitted on the chassis (See above how to change option bits).

-Adjust the antenna signal level at 62 dBμV

-Tune a colour bar pattern.

-Find the “AGC” item in service mode.

-Press the key “OK” on the remote keypad and wait until AGC level stabilise to the optimum value.

-Alternatively, use “Vol Up/Dwn” keys to adjust manually to the desired Tuner Take Over Point (TOP).

DTV R&D Europe

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Contents Color Television Chassis CP-520 Contents Document History Main Features Specifications IC Description UOC III SeriesTDA8946J Stereo Audio Amplifier TDA8358J Vertical AmplifierSchematic Diagram Stereo and AV Stereo Versions Mono VersionsALL Versions Functional Description Sound ProcessorDocument History Version Date Comments EURO-SCART 1 21 Pin Signal Description Matching value GeneralPin Signal Description Matching value EURO-SCART 2 21 PinCHANNEL/FREQUENCY Table Channel Europe Ccir France Gbireland East OirtC46 C47C48 C49S18 S19S20 S21Safety Precaution Safety Instruction RAY Radiation PrecautionProduct Safety Notice Microcontroller Configuration Service Mode Service Mode NavigationOrder Default setting HOR CEN RED Gain GRN Gain Blue Gain RED Bias GRN BiasChassis Model Option Tuner OptionsRemarks Entering into Factory mode Entering into NVM Editor mode Navigation in NVM Editor mode Exit NVM Editor modeNVM Data Change List 1 G2 Alignment White BalanceVertical Geometry Horizontal Picture CentringCorner B & Corner T EW Trapez 7 AGCIC Description IC Marking and VersionBulgarian CZECH, German DANISH, SpanishBlock Diagram QFP 128pin Short DescriptionBlkin BclinGND3 PBIN3SIFAGC/DVBAGC PllifGND2 QSSO/AMOUT/AUDEEFeatures Analogue Video Processing all versionsAnalogue video processing stereo versions Analogue video processing mono versionsSound Demodulation all versions Audio interfaces and switching mono versionsStereo Demodulator and Decoder full stereo versions RDS/RBDS Audio Multi Channel Decoder stereo versions with Audio DSPController Display Data CaptureTDA8946J Stereo Audio Amplifier Pin Symbol Description OUT1OUT1+ ModeBlock diagram TDA8946J TDA8358J Vertical Amplifier 1 TDA8358JINA INBOutb InewPin description FeaturesGND Pin No Name Description General Description PIN Description Name Symbol OVPIIN H TJ TSDSymbol MIN Type MAX Unit Mosfet Electrical Characteristics IC PIN Rating DescriptionOCH F Circuit Description Functional Description of Video Processor Vision if amplifierQSS sound circuit FM demodulatorAudio input selector and volume contro Stereo and AV Stereo VersionsMono Versions ALL VersionsSynchronisation circuit Horizontal and vertical drive Colour decoder RGB output circuit Wprgb 11 I2C-BUS User Interface Description Possible slave addressWrite registers Read registersOther features of the Demdec are Analog 2-CARRIER Systems Table Frequency modulationParameter A2/A2A2+ Korea CarriersystemswithnicamFunctional Overview Of the digital controller sound part Mixer IntroductionFmandamdemodulation Fmidentification FM/AMDECODINGFmpilotcarrierpresentdetector NicamdemodulationNicam AUTO-MUTE Service Parts List DTV- R&D Europe CCXB1H561K Cera Carbon Film Carbon Comp DTC-20T2FZS-S E30 4856310300 PCB Main CP-520A DTC 100 OHM J J500 85801065GY Packing AS DTC-20T2FZS-S DTC-21Y1FZF-S E33 4856310300 1N4937G 2.2K OHM F Packing AS DTC-21Y1FZF-S DTZ-29U7FZF-S Partsname 3M #232 6.0X2000M A001 4859809993 J38 85801065GY Packing AS DTZ-29U7FZS-S Exploded View Exploded View 7-2DTY-2880 Exploded View 7-3DTY-21U7 Exploded View 7-4DTY-25G6 Exploded View 7-5DTC-20T2 Exploded View 7-6DTC-21Y1 Exploded View 7-7DTZ-29U7 Exploded View 7-8DTZ-2881 Exploded View 7-9DTZ-2481 Printed Circuit Board 4859809893CP-520A 4859809993CP-520F Schematic Diagram CP-520A CP-520F