Teclast X21, Service Manual

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3.2.12 ON/OFF control circuit
3.2.13 MIC circuit
Section Three Servicing Cases
3.3.1 Servicing cases
3.3.2 Troubleshooting flow chart
Section Four Servicing Parameters
3.4.1 Key point waveform diagram
3.4.2 Key point voltage list
Section Five Function Introduction to IC
3.5.1 Function introduction to PNX0101
3.5.2 Function introduction to G690
3.5.3 Function introduction to PQ1X281
3.5.4 Function introduction to TC58512FT
3.5.5 Function introduction to SI1912DL
3.5.6 Function introduction to LM2703
3.5.7 TPS79301
3.5.8 Function introduction to TPS62200
3.5.9 Function introduction to ISL6294
3.5.10 Function introduction to S80829
3.5.11 Function introduction to TEA5767HN
Chapter Four Disassembly and Assembly Process
4.1 Whole set
4.1.1 Disassembly process of the whole set
4.1.2 Assembly process of the whole set
4.2 OLED display screen
4.2.1 OLED disassembly process
4.2.2 OLED assembly process
4.3 Li battery
4.3.1 Li battery disassembly process
4.3.2 Li battery assembly process
4.4 FM tuning board
4.4.1 FM tuning board disassembly process
4.4.2 FM tuning board assembly process
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