Daewoo DSC-3220E/3220L service manual General description

Page 3

 

 

Service manual SC-150

 

 

4-5-2 TDA8358J

33

4-6 TDA6107Q

33

4-7 24C16 - 16 Kb EEPROM

35

4-8 STR - F6653

36

4-8-1

General description

36

4-8-2

Features

36

4-8-3

Block diagram

36

4-8-4

Pin description

37

4-8-5

Control part - electrical characteristics

37

4-8-6

MOSFET electrical characteristics

38

4-9 CXA1315P

39

4-9-1

General description

39

4-9-2

Features

39

4-9-3

Block diagram

39

4-9-4

Pin Description

40

4-10 CXA1315P

40

................................................................................................................................4-10-1 General description

40

4-10-2 Features

40

4-10-3 Block diagram

40

4-10-4 Pin Description

40

4-11 LA6515

40

4-11-1 General description

40

4-11-2 Features

40

4-11-3 Block diagram

40

4-11-4 Pin Description

40

5 - Circuit description

43

5-1 Block diagram

43

5-2 IF section

44

5-2-1

Block diagram

44

5-2-2

Vision IF Amplifier

44

5-2-3

Tuner-and VIF-ACG

45

5-2-4

FPLL, VCO and AFC

45

5-2-5

Video Demodulation and Amplifier

46

5-5-6

Sound IF Amplifier and SIF-AGC

46

5-2-7

Quasi-Parallel-Sound (QPS) Mixer

46

5-2-8

Standard Switch

46

5-2-9

L Switch

46

5-2-10 Internal Voltage Stabiliser

46

5-3 Video - VCT description

47

5-3-1

Introduction

47

5-3-2

Video Front-end

47

5-3-3

Input Selector

47

5-3-4 Clamping

47

5-3-5

Automatic Gain Control

47

5-3-6

Digitally Controlled Clock Oscillator

47

5-3-7

Analogue Video Output

47

5-3-8

Adaptive Comb Filter (VCT3834A only)

48

5-3-9

Color Decoder

48

5-3-10 Horizontal Scaler

48

5-3-11 Video Sync Processing

49

5-3-12 Display Processing

49

5-3-13 Chroma Transient Improvement

49

5-3-14 Video Back-end

49

5-3-15 CRT Measurement and Control

50

5-3-16 Average Beam Current Limiter

50

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Contents Chassis SC-150 Contents General description Main PCB Union PCB Tuning system Main FeaturesPower consumption Sound Output PowerSvhs Pin Signal Description Matching value Page C04 C01C02 C03639.25 S13 S10S11 S12Special case Country selection = Others Program Group SkipITV RAY Radiation Precaution Safety instructionHOR Width Order Default settingh for SC-150Alignment instructions ParabolaOption HOR Paral BOW HOR Width Corner EW Trapez VCT IC descriptionPage Page IC version VCT 3832A VCT 3834A Chassis IC marking OSD languages Atss countries TextPin Name Type Short Description Gndaf Supply AGC Page German 2-Carrier System Dual FM System DSP-Section Audio Baseband ProcessingAnalogue Section Nicam plus FM/AM-MonoAdrsel PALSECAM-L UssrVREF2 ResetqDvsup DvssXtalin FeaturesANAIN1 TestenPin Symbol Function Mode OUT1GND1 OUT1+TDA8946J Page GND Block diagram TDA6107Q SCL SDAPage TJ TSD Pin Name Symbol DescriptionVIN OVP IIN HDescription IC Pins Symbol Rating Unit I2C Decoder SW3 SW1SW0 SW2IN2 IN3OUT IN1VEE Circuit description If section Block diagram Vision if Amplifier FPLL, VCO and AFC Standard FeaturesPage Page Adaptive Comb Filter VCT3834A only Video Sync Processing CRT Measurement and Control Page Stand by ConfigurationDescription Application Forced KEY Page Quadrature Mixers ESCPage Page STR-F6654 general description Power supply primary part operationsPage STR-F6654 oscillating operation Overvoltage protection circuit OVP Overcurrent protection function OCPLatch circuit Thermal shutdown circuit TSDTV start-up operations TV normal run and stand-by mode operations Page FBT SC-150 Controlled Rectifier 6V DC High Service Parts List Cord Power Oxide Film 2W 1.2 OHM J Small Semi Fixed CCZB1H561K Cera Carbon Film Metal Film Carbon Comp PA01A RF27 RD-4Z221J Jumper Different Part List by PCB & Micom Version Main PCBUnion PCB Jumper DELExplode View PCB Main PCB Union Schematic DiagramMAIN Schematic DiagramUNION

DSC-3220E/3220L specifications

The Daewoo DSC-3220E/3220L is a noteworthy addition to the lineup of high-efficiency air conditioning solutions, specifically crafted to meet the demands of varying climatic conditions. With a blend of innovative technologies and robust design, these models stand out in the realm of home and commercial air conditioning.

One of the main features of the DSC-3220E/3220L is its efficient cooling performance. The units are built with advanced rotary compressors, which are designed to operate efficiently while providing powerful cooling capabilities. This allows for quick temperature adjustments, making it an ideal choice for those who seek rapid relief from heat.

Another remarkable aspect of the DSC-3220E/3220L is its energy-efficient operation. With a superior Energy Efficiency Ratio (EER), these air conditioning units ensure that energy consumption is minimized without compromising comfort. This not only reduces electricity bills but also contributes to a smaller carbon footprint, making it an environmentally friendly choice.

The units also come equipped with state-of-the-art air filtration technologies. The multi-layer air filters are designed to capture dust, pollen, and other airborne particles, ensuring that the air in the environment remains clean and healthy. This feature is particularly beneficial for allergy sufferers and enhances the overall indoor air quality.

In terms of user convenience, the DSC-3220E/3220L models are engineered with user-friendly controls. Many features, including temperature settings and fan speeds, can be easily adjusted through a remote control or a digital display panel on the unit itself. This ensures that users can customize their comfort levels with minimal effort.

Noise reduction is another critical characteristic of the DSC-3220E/3220L. Both models are designed with silent operation in mind, making them suitable for bedrooms, offices, and other environments where noise can be a distraction. The sound insulation techniques employed help maintain a serene atmosphere while enjoying optimal cooling.

Furthermore, installation of the DSC-3220E/3220L air conditioning systems is straightforward, making them accessible for residential and commercial settings alike. The compact design and versatility in installation options allow these units to fit seamlessly into various spaces without sacrificing performance.

Overall, the Daewoo DSC-3220E/3220L embodies a fine balance of efficiency, technology, and user-centric design, making it a commendable choice for air conditioning needs in diverse settings. With its reliable performance and thoughtful features, it continues to gain popularity among consumers looking for effective climate solutions.
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