tcl必威体育精装版机型 ms21机芯维修资料（TCL latest model MS21 movement maintenance data）.docVIP

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tcl必威体育精装版机型 ms21机芯维修资料（TCL latest model MS21 movement maintenance data）.doc

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tcl必威体育精装版机型 ms21机芯维修资料（TCL latest model MS21 movement maintenance data）

tcl必威体育精装版机型 ms21机芯维修资料（TCL latest model MS21 movement maintenance data） Chapter 1 introduction of TG85 movement board \ digital board signal flow Section 1 the signal flow of the TG85 main board TG85 movement rear projection is the companys new introduction of a digital signal processing technology, belonging to the 100HZ series HiD rear projection. It mainly uses the Toshiba TOSHIBA CPU+ IN ONETMPA8827 decoding of TWO and the United States Genesis high quality digital video format converter FLI2300, IC scan for TDA9116. HID4231HB, HID5221HB, HID42D1, HID52D1 and other machines are using TG85 movement, it is only the motherboard and digital board is different from the original HID438SB.R, other boards are the same. So here only on the motherboard and digital board principle details. Rear projection motherboard TG85 core core circuit comprises an integrated digital tuner, video decoding, MCU microprocessor, EEPROM, memory, sound deflection scanning pre processing, audio power amplifier circuit composed of (see Fig. 2-2). It adopts integrated circuit respectively: IC1101 Toshiba CPU+ TWO IN, IC1102 ONETMPA8827 decoding memory EEPROM-M24C64, TDA9181, IC1401 audio IC1201 comb filter preprocessing NJW1136L, IC1501 TDA7264, IC1601 audio power amplifier TDA9116, IC1701-1.5A deflection output electric three terminal regulator L7805CV, IC1702 L7809CV, IC1802/3 three terminal voltage conversion chip HEF4052BT (D). 1 、 image intermediate frequency signal flow: The signal from the antenna input by frequency synthesizer tuner TU1301, after an internal amplification, frequency selection, mixing after the intermediate frequency signal output by TU1301, the 11 foot IF output, IF intermediate frequency signal by the C1307 coupling capacitor sent to the pre intermediate frequency amplification transistor Q1301 preamplifier, its purpose is to compensate behind the sound filter Z1301 insertion loss. L1301 even Q1301 inductance on the collector and the sound in the capacitor to form a paral