Teclast X21, Service Manual

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2.2.8 A-B REPEAT FUNCTION
2.2.9 RECORDING
2.2.10 TUNING
2.2.11 TUNING
2.2.12 TUNING
2.3 SETTINGS
2.3.1 SETTINGS
2.3.2 PLAY MODE
2.3.3 EQ SELECT
2.3.4 SLEEP
2.3.5 3D
2.3.6 PLAYLIST
2.3.7 PLAYLIST
2.3.8 FM CHANNEL
2.3.9 SCREEN SAVE
2.3.10 ADVANCED
2.4 SPECIFICATION
Chapter Three Principle and Servicing
section One Principle of the Player
3.1.1 Function introduction and principle of the player
3.1.2 Block diagram
3.1.3 Introduction to IC used by the player
Section Two Unit Circuit Principle
3.2.1 FLASH circuit principle
3.2.2 FM module circuit
3.2.3 OLED module circuit
3.2.4 USB jack circuit
3.2.5 Button circuit
3.2.6 Charge management circuit
3.2.7 Low voltage detecting circuit
3.2.8 Battery protection circuit
3.2.9 Power management module
3.2.10 Headphone jack circuit
3.2.11 Reset circuit
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