Daewoo Complete Guide to Audio Control and Selection for DTY 21 Models
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CP-520/520A/520F Service Manual

applied to obtain sufficient selectivity (the sound input can be activated by means of the setting of CMB2-CMB0 bits in subaddress 4AH). The setting to the wanted frequency is realised by means of the control bits FMA, FMB and FMC in the control bit 33H.

From the output status bytes it can be read whether the PL Lfrequency is inside or outside the window and whether thePLL is in lock or not. With this information it is possible to make an automatic search system for the incoming sound frequency. This can be realised by means of a software loop which switches the demodulator to the various frequencies and then select the frequency on which a lock condition has been found.

The amplitude deemphasis output signal changed with 6dB by means of the AGN bit. In this way output signal differences between the 4.5 MHz standard (frequency deviation25 kHz) and the other standards (frequency deviation50 kHz) can be compensated.

5.2.4 Audio input selector and volume contro

5.2.4.1 STEREO AND AV STEREO VERSIONS

The audio input selector circuit has 4 external stereo inputs, a stereo output for SCART/CINCH and stereo outputs for headphone and audio power amplifiers. The selection is made with the bits SAS2/0, SO2/0 and HPO2/0. AV stereo versions without Audio DSP have no headphone output. The input signal selection for the volumecontrolledaudiooutputsisrealisedbytheHPO2/0 bits.

The gain from an external audio input to each of the (non-controlled) analog output is 0 or +6dB(controlled by the DSG bit). A supply voltage of 5V allows input and output amplitude of 1VRMS full scale, as required to comply with the SCART specification, the audio supply voltage must be 8V. In that case the gain of the audio amplifier must be doubled. This can be realised with the DSG bit in subaddress 32H.

The circuit contains an analogue stereo volume control circuit with a control range of about 70dB. This volume control circuit is used for the headphone channel (stereo versions with Audio DSP) or for the main channel (AV stereo versions without Audio DSP). The analogue control circuit also contains an Automatic Volume Levelling(AVL) function. When this function is activated it stabilises the audio output signal to a certainl evel so that big fluctuations of the output power are prevented.

5.2.4.2 MONO VERSIONS

The audio input selector circuit has 4 inputs for mono signals. The selection is made with the HPO2/0 bits.

The circuit contains an analogue volume control circuit with a control range of about 70dB and an AVL circuit.

5.2.5 CVBS and Y/C input signal selection

5.2.5.1 ALL VERSIONS

DTV R&D Europe

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Contents Color Television Chassis CP-520 IC Description UOC III Series Contents Document History Main Features SpecificationsTDA8946J Stereo Audio Amplifier TDA8358J Vertical AmplifierStereo and AV Stereo Versions Mono Versions Schematic DiagramALL Versions Functional Description Sound ProcessorDocument History Version Date Comments General EURO-SCART 1 21 Pin Signal Description Matching valueEURO-SCART 2 21 Pin Pin Signal Description Matching valueChannel Europe Ccir France Gbireland East Oirt CHANNEL/FREQUENCY TableC47 C46C48 C49S19 S18S20 S21Safety Precaution Safety Instruction RAY Radiation PrecautionProduct Safety Notice Service Mode Navigation Microcontroller Configuration Service ModeOrder Default setting HOR CEN RED Gain GRN Gain Blue Gain RED Bias GRN BiasChassis Model Option Tuner OptionsRemarks Entering into NVM Editor mode Entering into Factory modeNavigation in NVM Editor mode Exit NVM Editor modeNVM Data Change List White Balance 1 G2 AlignmentVertical Geometry Horizontal Picture Centring7 AGC Corner B & Corner T EW TrapezIC Marking and Version IC DescriptionBulgarian CZECH, German DANISH, SpanishBlock Diagram Short Description QFP 128pinBclin BlkinGND3 PBIN3Pllif SIFAGC/DVBAGCGND2 QSSO/AMOUT/AUDEEAnalogue Video Processing all versions FeaturesAnalogue 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 OUT1 Pin Symbol DescriptionOUT1+ ModeBlock diagram TDA8946J 1 TDA8358J TDA8358J Vertical AmplifierINB INAOutb InewPin description FeaturesGND Pin No Name Description General Description OVP PIN Description Name SymbolIIN H TJ TSDSymbol MIN Type MAX Unit Mosfet Electrical Characteristics IC PIN Rating DescriptionOCH F Circuit Description Vision if amplifier Functional Description of Video ProcessorQSS sound circuit FM demodulatorStereo and AV Stereo Versions Audio input selector and volume controMono Versions ALL VersionsSynchronisation circuit Horizontal and vertical drive Colour decoder RGB output circuit Wprgb Possible slave address 11 I2C-BUS User Interface DescriptionWrite registers Read registersAnalog 2-CARRIER Systems Table Frequency modulation Other features of the Demdec areA2/A2 ParameterA2+ Korea CarriersystemswithnicamFunctional Overview Of the digital controller sound part Mixer IntroductionFmandamdemodulation FM/AMDECODING FmidentificationFmpilotcarrierpresentdetector 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

DTZ-2481, DTZ-29U7/U3, DTC-21Y1/21Y2, DTY-21U7/21B4, DTY-2880/28W5 specifications

The Daewoo DTC-20T2, DTY-28A8, DTY-28A6, DTY-28A7, DTZ-2881/28W8, DTY-25G6/25G7, and DTY-2880/28W5 represent a range of innovative and feature-rich vehicles that reflect Daewoo's commitment to quality and advanced technology. Each model combines sleek design with performance excellence, appealing to a wide range of consumers.

Starting with the DTC-20T2, this compact car offers a combination of efficiency and agility. Its lightweight design enhances fuel economy while maintaining stability on the road. Equipped with a state-of-the-art engine, the DTC-20T2 delivers a responsive drive, making it ideal for city commuting and weekend getaways.

The DTY-28A8 is known for its spacious interior and comfort features. It boasts advanced infotainment systems, including touch screens and smartphone connectivity, catering to modern drivers. Safety is paramount, with multiple airbags and advanced braking systems ensuring peace of mind on every journey.

Similarly, the DTY-28A6 and DTY-28A7 share many design elements but have unique enhancements that differentiate them. They incorporate advanced suspension systems that provide a smooth driving experience while navigating urban and rural landscapes. These models also feature high-efficiency engines that strike a balance between power and fuel consumption.

Moving to the DTZ-2881/28W8, this vehicle makes a statement with its bold design and robust performance. This model is designed with aerodynamics in mind, reducing drag and enhancing fuel efficiency. It includes innovative technologies like regenerative braking, which captures energy during deceleration, extending the vehicle's overall efficiency.

The DTY-25G6/25G7 and DTY-2880/28W5 are particularly impressive with their emphasis on versatility. These models offer various configurations and layouts to cater to different needs, whether for families or individuals. They feature expanded cargo capacity and modular seating arrangements that can accommodate both passenger and transportation requirements.

In conclusion, the Daewoo DTC-20T2, DTY-28A8, DTY-28A6, DTY-28A7, DTZ-2881/28W8, DTY-25G6/25G7, and DTY-2880/28W5 showcase a blend of performance, technology, and comfort across their varying models. From advanced safety features to innovative fuel efficiency technologies, these vehicles are tailored to meet the needs of a diverse clientele, reinforcing Daewoo’s stature in the automotive industry.
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