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File name 9810_Chassis_Sanyo_con_UOC_TMPA8823-5VA4_Manual_de_servicio.pdf

TMPA 8823-5VA4 SERVICE MANUAL CONTENT (1) General-----------------------------------------------------------------------------1 (2) Frame Chart-------------------------------------------------------------------fig.1 (3) IC Function Introduction ------------------------------------------------------1 3.1 N501 TMPA8823-----------------------------------------------------2 3.2 N002 ST4053 ----------------------------------------------------------3 3.3 N301 LA78040 ------------------------------------------------------------4 3.4 N601 AN7522----------------------------------------------------------4 (4) I2C Bus Control ------------------------------------------------------------------5 4.1 Menu Entry -------------------------------------------------5 4.2 Item Introduction -----------------------------------------------------------5 (5) IC Voltage --------------------------------------------------------------8 (6) Trouble shorting------------------------------------------------------------------9 1 (1) General This chassis is consists of main IC TMPA8823-5VA4, ST4053. TMPA8823-5VA4 is an integrated circuit for a PAL TV. A MCU and a TV signal processor (SP) are integraed in a 64-pin shrink DIP package. The MCU contains 8-bit CPU,ROM,RAM,I/O ports,timer/counters, A/D converters,an on-screen display controller,remoter control interfaces,IIC bus interfaces. The TV signal processor contains PIF,SIF,Video,multi-standard chroma,Sync,RGB processors. (2) Frame Chart (see fig.1) TUNER TDL-3N1 AV/TV SWITCH ST4053 AUDIO POWER AN7522 PIF/SIF TMPA 8823 R, G, B CRT OSCILLLLATION 2SC3619 X 3 VM VT/BL BH/RF AGC V-OUT LA78040 H-OUT ST1803DF +115V +25V +19V SCAN TRANSFORMER BSC24-3360-4P 220V ON/OFF POWER C5299 +13 fig.1 1 (3) IC Function Introduction 3.1 N501 TMPA8823-5VA4 Icon SDA2 MUTE KEY DVSS RESET XOUT XIN TEST DVDD VVSS TV GND FBP IN H.OUT H.AFC1 V.SAW V.OUT H.Vcc(9V) NC Cb in Y in Cr in DIG GND C in V2 in DIG Vdd CW out ABCL in EW out IF Vvv(9V) TV out SIF out DC NF PIF PLL IF Vvv(5V) REG FIL DE-EMP IF AGC IF GND PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 34 35 36 37 38 39 40 Function: MCU and SP Description IIC bus serial data input/output Mute Output Key input GND connection Reset signal input 8 MHz oscillator connection 8 MHz oscillator connection GND connection 5V power supply GND connection GND terminal for Analog block Input terminal for FBP Horizontal driving pulse output H AFC filter connection Terminal to be connected capacitor to generate V saw signal Vertical driving pulse output Vcc terminal for DEF circuit No use Input terminal for Cb signal Input terminal for Y signal Input terminal for Cr signal GND terminal for Digital block Input terminal for Chroma signal Input terminal for Video signal Vcc terminal for Digital block Output terminal for fsc wave signal Input terminal for ABL/ACL control Output terminal for east-west correction singal Vcc terminal for IF circuit Detected PIF signa