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Manuals and User Guides for Daewoo DTF-2950K-100D. We have
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Daewoo DTF-2950K-100D manual available for free PDF download: Service Manual
Daewoo DTF-2950K-100D Service Manual (92 pages)
Brand:
Daewoo
| Category:
TV
| Size: 18.39 MB
Table of Contents
Service Manual
1
Table of Contents
2
Document History
6
1 Main Features
7
Specifications
7
General
7
EURO-SCART 1 (21 Pin)
7
EURO-SCART 2 (21 Pin)
8
Channel/Frequency Table
9
Atss Sorting Method
12
General Case
12
Special Case
12
2 Safety Instruction
14
3 Alignment Instructions
15
Microcontroller Configuration : Service Mode
15
Service Mode Navigation
15
Microcontroller Configuration : Option Bits
15
Option1
15
Option2
15
Option3
15
Tv Set Alignment
17
Local Oscillator Alignment
17
G2 Alignment
17
White Balance
17
Focus
17
Vertical Geometry
17
Horizontal Picture Centring
17
East / West Correction
17
Agc
18
4 IC Description
19
Teletext Decoder with Embedded 8-Bit Controller
19
Block Diagram of the Sda55Xx
19
Description
19
IC Marking and Version
20
Pinning
20
Vsp94X5B (Version C4)- Optimus Color Decoder and Scan-Rate Converter
22
BLOCK DIAGRAM of the Vsp94X5B
22
Feature Overview
23
Pinning
24
Ddp 3315C - Display and Deflection Processor
26
Block Diagram of the Ddp 3315C
26
Description
26
Pinning
28
Msp341X Multistandard Sound Processor
30
Basic Features of the Msp 341X
30
Demodulator & NICAM Decoder Section
30
DSP-Section (Audio Baseband Processing)
31
Analogue Section
31
NICAM & FM/AM-Mono
31
German 2-Carrier System (DUAL FM System)
31
Tda4470 - Multistandard Video-If and Quasi Parallel Sound Processor
34
Description
34
Features
34
Pinning
34
Block Diagram
35
Tda8946J Stereo Audio Amplifier
36
Features
36
Tda8358J Vertical Amplifier
38
Features
38
Tda6108Jf
40
24C16 - 16 Kb Eeprom
41
Str - W6754
42
General Description
42
Features
42
Block Diagram
42
Pin Description
43
Mosfet Electrical Characteristics
43
Electrical Characteristics
44
5 Cp-850Fx Chassis Description
45
Power Supply Block Diagram
45
Video & Stereo Audio Block Diagram
46
If Section
47
Block Diagram
47
Vision if Amplifier
48
Tuner-And Vif-Agc
48
Fpll, Vco and Afc
48
Video Demodulation and Amplifier
49
Sound if Amplifier and Sif-Agc
49
Quasi-Parallel-Sound (Qps) Mixer
49
Standard Switch
49
L' Switch
49
Internal Voltage Stabiliser
49
Video / Rgb
49
Front End
49
CVBS Front-End
49
Input Selector
50
Signal Levels and Gain Control
50
Synchronization
50
Chroma Decoder
50
Luminance Processing
50
RGB Front-End
50
Signal Processing
50
Horizontal Prescaler
50
Noise Reduction
51
Noise Measurement
51
Operation Modes
51
Digital 656 Output
51
Back End
51
Digital Input Interface
51
Horizontal Scaler
51
Luma Contrast and Brightness
52
Black Level Expander/Compressor (BLEC)
52
Luma Sharpness Enhancer (LSE)
52
Dynamic Peaking
52
Luma Transient Improvement (LTI)
52
Mixing of Dynamic Peaking and LTI
52
Chroma Transient Improvement
52
Analog Back End
54
Analog RGB Insertion
54
CRT Measurement and Control
54
Synchronization and Deflection
55
EHT Compensation
55
Microntroller
55
Microcontroller Features
55
Acquisition Features
55
Ports
56
Μ-CONTROLLER I/O PIN CONFIGURATION and FUNCTION TABLE
56
Tuning
56
Automatic Picture Format Switching
57
WSS Data
57
SCART Pin 8 Data (Slow Switching)
58
Picture Format Description
58
16:9 Crt
58
4:3 Crt
59
External Source Control Logic
60
Over Current Protection
61
Teletext Display
61
Sound Processing
62
Analogue Sound if - Input Section
62
Quadrature Mixers
62
Phase and am Discrimination
62
Nicam Decoder
63
Dsp Section
63
Sound Mode Switching
63
Sound Amplification
63
Power Amplifier
63
Mode Selection
64
Vertical Deflection
64
Flyback Voltage
64
Protection
64
Guard Circuit
64
Damping Resistor
64
East-West Amplifier
64
Power Supply (Str-W6754) - Functions of each Terminal
65
VCC Terminal (Pin 4)
65
Start-Up Circuit
65
Auxiliary/Drive Winding
66
Overvoltage Protection Circuit
67
Latch Circuit
68
SS/OLP Terminal (Pin 5)
68
Soft-Start Operation at Start-Up of Power Supply
68
Overload Protection
69
Operation at Power Supply off
70
Cancellation of OLP Circuit
70
FB Terminal (Pin. 6)
71
Constant Voltage Control Circuit
71
OCP/BD Terminal (Pin 7)
72
Minus-Detection Type OCP Circuit
72
Quasi-Resonant and Bottom-Skip Operation
73
Quasi-Resonant Operation
73
Bottom-Skip Operation (Switching from Quasi-Resonant Operation)
74
Quasi-Resonant Operation ⇒ Bottom-Skip Operation
74
Bottom-Skip Operation ⇒ Quasi-Resonant Operation
74
Stand-By Operation
75
Step-Drive Circuit
77
Maximum on Time Controlling Function
77
6 Service Parts List
78
Dtf-2950
78
7 Exploded View
86
Dtf-2950
86
8 Printed Circuit Board
87
Main Pcb
87
Union Pcb
88
Crt Pcb
89
9 Schematic Diagram
90
Main
90
Union & Crt
91
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