Daewoo DDT-21H9ZDR(21") Manuals

Manuals and User Guides for Daewoo DDT-21H9ZDR(21"). We have 1 Daewoo DDT-21H9ZDR(21") manual available for free PDF download: Service Manual

Daewoo DDT-21H9ZDR(21

Daewoo DDT-21H9ZDR(21") Service Manual (116 pages)

tv/dvd combination

Brand: Daewoo | Category: TV | Size: 8 MB

Table of Contents

Service Manual
1
Table of Contents
2
1 Main Features

5
- Specifications
  5
- Channel Table
  7
- ATSS Sorting Method
  9
2 Safety Instruction

10
3 Alignment Instructions

11
4 IC Description

16
- VCT383XA TV Signal Processor - Teletext Decoder with Embedded 8 Bit - Controller
  16
  - Block Diagram of the VCT
    16
  - TV-Signal Processor
    16
  - Controller
    17
  - Teletext Features
    17
  - Display OSD Features
    18
  - Audio Features
    18
  - General Features
    18
  - Data Capture
    18
  - Data Capture Features
    18
  - TV Processor Version and ¥-Controller Capacity
    19
  - IC Marking and Version
    19
  - Pinning
    19
- MSP341 X Multistandard Sound Processor
  22
- General Description
  26
- Quick Reference Data
  26
- Block Diagram
  27
- Pinning
  28
- Functional Description
  29
- Source Select Switches Block
  29
- Loudspeaker Channel
  29
- Effect Controls
  29
- C-Bus Conrol
  29
- TDA9886 IIC-Bus Controlled Single/Multi Standard Algnment-Free IF-PLL
  30
  - Features
    30
  - Pinning
    30
  - Description
    32
- Tda894Xj Stereo Audio Amplifier
  32
  - Feature
    32
- TDA8357J Vertical Amplifier
  34
  - Features
    34
  - General Description
    34
  - Quick Reference Data
    34
- Stv5109
  35
  - 24C16-16Kb EEPROM
    37
  - Str - F6654(21"), Str-F6653(14")
    37
  - General Description
    37
  - Features
    37
  - Block Diagram
    38
  - Pins Description
    38
  - Control Part Electrical Characteristics
    39
  - MOSFET Electrical Chatacteristics
    39
5 Circult Description

40
- Block Diagram
  40
- If Section
  42
  - Picture if Amplifier
    42
  - Tuner and VIF-AGC
    42
  - VIF-AGC Detector
    42
  - Frequency Phase-Locked Loop(FPLL) Detector
    42
  - VCO and Divider
    42
  - Digital Acquisition Help and AFC
    43
  - Video Demodulator and Amplifier
    43
  - Sound Carrier Trap
    43
  - SIF Amplifier
    43
  - AGC Detector
    43
  - Single Reference QSS Mixer
    44
  - AM Demodulator
    44
  - FM Demodulator and Acquisition Help
    44
  - Audio Amplifier and Mute Time Constant
    44
  - I 2 C-Bus Transceiver and MAD (Module Address)
    45
  - Internal Voltage Stabilizer
    45
- Video - VCT Description
  45
  - Introduction
    45
  - Video Front-End
    45
  - Input Selector
    45
  - Clamping
    45
  - Automatic Gain Control
    45
  - Digitally Controlled Clock Oscillator
    45
  - Analogue Video Output
    45
  - Adaptive Comb Filter (VCT3834A Only)
    46
  - Color Decoder
    46
  - Horizontal Scaler (VCT3834A Only)
    46
  - Video Sync Processing
    46
    
    Display Processing
    47
    
    Chroma Transient Improvement
    47
    
    Video Back-End
    47
    
    CRT Measurement and Control
    47
    
    Average Beam Current Limiter
    47
    
    Analogue RGB Insertion
    47
    
    Fast-Blank Monitor
    47
    
    Vertical and East/West Deflection
    48
    
    EHT Compensation
    48
    
    Reset Function
    48
    
    Standby and Power-On
    48
  - Microcontroller
    48
    
    Introduction
    48
    
    Cpu
    48
    
    Controller I/O Pin Configuration and Function
    48
    
    Tuning
    49
    
    Over Current Protection
    49
  - Teletext Display
    49
  - Sound Processing
    50
    
    Analogue Sound if - Input Section
    50
    
    Quadrature Mixers
    50
    
    Phase and am Discrimination
    50
    
    NICAM Decoder
    50
    
    DSP Section
    50
    
    Sound Mode Switching
    50
  - Audio Processing
    51
    
    Mono Audio Signal from if IC-Input Section
    51
    
    Source Select Switching Block
    51
    
    Effect Controls
    51
    
    Loudspeaker Channel
    51
    
    Sound System Selection
    51
  - Sound Amplification
    52
    
    Power Amplifier
    52
    
    Mode Selection
    52
    
    Vertical Deflection
    52
    
    Fyback Voltage
    52
    
    Protection
    52
    
    Guide Circuit
    53
    
    Damping Resustir
    53
    
    EAST-WAST Amplifier(TDA8357J)
    53
  - Power Supply(STR-F6654:CP-099FS, F6653:CP-099)
    53
    
    STR-F6654 General Description
    53
    
    Power Supply Primary Part Operations
    53
    
    Start-Up Circit:V
    53
    
    STR-F6654 Oscillating Operation
    54
    
    STR-F6654 Protection Circuits
    55
  - TV Start-Up, TV Normal Run and Stand by Mode Operations
    56
    
    TV Start-Up Operations
    56
    
    TV Normal Run and Stand-By Mode Operations
    56
  - DVD
    60
    
    Electirical Troubleshooting Guide
    60
    
    Circuit Diagram
    62
    
    Troubleshooting
    62
    
    Circuit Operational Description
    72
6 Service Parts List

85
7 Different Parts List by CRT

104
8 Exploded View

105
9 Printed Circuit Board

108
10 Schematic Diagram

112

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