Manuals / Daewoo / TV and Video / CRT Television

Daewoo 14T2, 21Q2, 21Q1, 21Q4, 14Q2, 20Q1, 14Q1, 21T2, 20Q3, 14T1, 20T2, 21T1, 14Q3, 20Q2, 20T1 Contents

Models: 14Q3 20T2 21Q2 21Q1 21T2 14Q1 21Q4 20T1 20Q1 14T2 20Q2 21T1 14Q2 14T1 20Q3

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CONTENTS
Specifications	1
Safety Instruction	2
Circuit block Diagram	3
Alignment Instructions	4
IC Description	7
Circuit Description	31
PCB Layouts
PRINTED CIRCUIT BOARDS	38
SCHEMATIC DIAGRAM	39
Trouble Shooting Charis	40
Important IC Voltage Charts	47
Electrical Part List	49
Q Model T Model Difference Part List	64
Inch difference Part List	65
Mechanical Exploded View and Part List	66

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Daewoo 14T2, 21Q2, 21Q1, 21Q4, 14Q2, 20Q1, 14Q1, 21T2, 20Q3, 14T1, 20T2, 21T1, 14Q3, 20Q2, 20T1 service manual Contents

Contents

Chassis CP-370 Contents Specifications Safety Instruction RAY Radiation Precaution White Balance Alignment InstructionsScreen Focus Vertical Slope Geometry Vertical CenterVertical Size Vertical S-CORRECTIONPage IC Description Cmos Compatible I/O Pins Plastic 42 Ysdp Pins Package Block Diagram Synchronization Feature AcquisitionDisplay Sdip 52 package Supply voltage Block Diagram Controller Pin Name Symbol Description Pin Description Cvbs Features PIN Symbol Description Audio RGB Block Diagram Pin Description Name Sound if Input Beam current limitinq Name DescriptionVertical Guard Luminance EAST-WEST Drive PIN Description TDA4665Base Band Delay Line3Block Diagram Pin Description Symbol PIN Description TDA8395 Secam Decoder Block Diagram Pin Description TDA6106Q Video Output Amplifier I802 PC817 Veco TDA8356 DC-coupled vertical deflection circuit 3Block Diagram 4Pin Description TDA7056 BTL Audio Output Amplifier 1 Speaker Model STR-S5707 Hybrid IC for a Switching Regulator PIN Name Symbol Description Ta=25 Description Terminal Symbol Rating UnitMIN TYP MAX Rating Unit TDA8138 5.1V+12V regulator with Disable and Reset TDA 1519BAUDIO Output Amplifier 2 Speaker Model PIN Signal Description PCA84C 122AIC Remocon Circuit Description Colour decoder Vertical synchronizationGeometry processing RGB output and black current stabilization TuningIntegrated video filters Base band delay line TDA4665 TDA8356 vertical deflection Horizontal deflection VIN terminal, start-up circuit Power Supply STR-S5707Video amplifiers Oscillator, F/B terminal voltage Pin Latch circuit Drive circuitOCP over-current protection function Thermal shutdown circuit Trouble Shooting Charts No Raster No Pictureraster OK No Vertical Scaningone Horizontal Line on Screen No Color No Soundpicture OK Abnormal Normal No External A/VRF OK No ON-SCREEN Displaypicture OK Remote Control Unit Troublelocal Control OK User’s control condition IC DC Voltage ChartsInput signal Line Voltage I502TDA4665 I501TDA8374AI301TDA8356 I503TDA8395 Electrical Parts List LOC PART-CODE PART-NAME Part Type Remark PTSPPWA499 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 Difference Part List LOC Part Name CP-370 Inch Difference Part List LOC Part Name Model RemarkPage Page Page Page Page Page Page Page Page Page Page