Original article

Chapter 1 satellite digital TV set-top box (DVB-S)

1. 1 DVB-S set-top box main chip and additional functions

1.2 DVB-S set-top box chip solution

1.3 DVB-S/FTA basic set-top box

1.4 set-top box of 430 series of Aeronautical Branch

Circuit composition and functional characteristics of 430 series 1.4. 1 set-top box of aviation department.

Principle of CA Decryption Technology for Aviation Branch 1.4.2 430 Series Set-top Box

1.5 TX6823 cardless set-top box

1.5. 1 upgrade process

1.5.2 upgrade without card

1.6 DM500S STB

1.6. 1 DM500 functions and characteristics of the set-top box

* * * Enjoy the technical principle of 1.6.2 DM500 set-top box.

1.7 high-definition satellite TV set-top box

1.7. 1 Tongzhou CDVB8800 high-definition satellite TV set-top box

1.7.2 UNISAT-DW8620SCI HDTV STB

Chapter II Cable Digital TV Set-top Box (DVB-C)

2. 1 Tongzhou DVB-C cable set-top box (CDVBC5680M)

2.2 changhong DVB-C6000 cable set-top box

2.3 galaxy DVB-C20 10 classic cable set-top box

2.4 smart card authorization of dvb-c cable TV set-top box

Chapter III Digital Terrestrial TV Set-top Box (DVB-T)

3. 1 Feng Bao HE986 DVB-T set-top box

3.2 Shenzhen Yingluo OEM supra TV dv b-T set-top box

Maintenance items

Chapter IV Maintenance of Satellite Digital TV Set-top Box

4. Circuit Analysis and Maintenance of1430 Series Set-top Box

4. 1. 1.430 set-top box power circuit maintenance

4. 1.2 430 Circuit maintenance of operation control panel of set-top box

4. 1.3 430 set-top box system switching and storage circuit maintenance

4. 1.4 430 video/audio circuit maintenance

4. 1.5 430 set-top box card holder circuit maintenance and upgrade interface circuit.

4. 1.6 430 circuit maintenance of set-top box tuner

4.2 STR 4365/TX 6823 Circuit Maintenance of Card-free Set-top Box

4.2. 1 STR4365/TX6823 set-top box circuit composition

4.2.2 Maintenance of tuning circuit of STR4365/TX6823 set-top box

4.2.3 Maintenance of STR4365/TX6823 set-top box panel control circuit

4. 2. 4 str 4365/tx 6823 Interface Circuit Maintenance of Set-top Box

4.2.5 video/audio circuit maintenance of STR 4365/TX 6823 set-top box

4. 2. 6 STR 4365/TX 6886 Set-top box power supply circuit maintenance

Chapter V Maintenance of Cable Digital TV Set-top Box

5. 1 Galaxy DVB-C20 10 Maintenance of Classic (Konka SD620) Cable Digital TV Set-top Box

5. 1. 1 Galaxy DVB-C20 10 Classic (Konka SD620) Cable Digital TV Set-top Box Tuning Circuit Maintenance

5. 1.2 Maintenance of Audio/Video Circuit of Yinhe DVB-C20 10 Classic (Konka SD620) Cable Digital TV Set-top Box

5. 1.3 Memory Maintenance of Yinhe DVB-C20 10 classic (Konka SD620) Cable Digital TV Set-top Box

5. 1.4 Maintenance of Interface Circuit of Yinhe DVB-C20 10 Classic (Konka SD620) Cable Digital TV Set-top Box

5.2 Maintenance of Tongzhou CDVB5680M Cable Digital TV Set-top Box

5.2. 1 Tongzhou CDVB5680M cable digital TV set-top box tuning circuit maintenance

5.2.2 Maintenance of video and audio circuits of Tongzhou CDVB5680M cable digital TV set-top box.

5.3 Maintenance of Changhong DVB-C6000 Cable Digital TV Set-top Box

5.3. 1 changhong DVB-C6000 cable digital TV set-top box tuning circuit maintenance

5.3.2 Maintenance of Video and Audio Circuit of Changhong DVB-C6000 Cable Digital TV Set-top Box

5.3.3 Maintenance of storage circuit of Changhong DVB-C6000 cable digital TV set-top box.

Chapter VI Maintenance of Digital Terrestrial TV Set-top Box

6. Maintenance of tuning circuit of19700 DVB-T TV set-top box

6.2 Maintenance of Audio and Video Circuits of 9700 DVB-T TV Set-top Box

6.3 maintenance of interface circuit of 9700 dvb-t TV set-top box

6.4 Maintenance of Storage Circuit of 9700 DVB-T TV Set-top Box

Appendix 1 Knowledge of Modern Terrestrial Digital Television Standards

Appendix 2 Circuit schematic diagram of STR4365/TX6823 (STI 5518 scheme) satellite TV set-top box

Appendix 3 Circuit schematic diagram of Changhong (STi5 105 scheme) cable TV set-top box

Appendix 4 Circuit Schematic Diagram of 9700 DVB-T TV Set-top Box

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