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COLOR TELEVISION

SERVICE MANUAL

MODEL NO.

CHASSIS NO. ETA-1U

Please read this manual carefully before service.

SF21GA63

Содержание SF21GA63

Страница 1: ...COLOR TELEVISION SERVICE MANUAL MODEL NO CHASSIS NO ETA 1U Please read this manual carefully before service SF21GA63...

Страница 2: ...CT SAFETY NOTICE 2 SAFETY SYMBOL DESCRIPTION 3 MAINTENANCE 3 ADJUSTMENTS 4 SET UP ADJUSTMENTS 4 CIRCUIT ADJUSTMENTS 7 STRUCTURE AND CHASSIS FUNCTION DESCRIPTION 13 STRUCTURE BLOCK DIAGRAM 13 CHASSIS D...

Страница 3: ...ICE below 4 Service and adjustment of the TV may result in changes in the nominal EHT voltage of the CRT anode So ensure that the maximum EHT voltage does not exceed the rated value after service and...

Страница 4: ...se characteristics are often passed unnoticed by a visual inspection and the X ray radiation protection afforded by them cannot necessarily be obtained by using replacements rated at higher voltages o...

Страница 5: ...ts identified by the VDE marking have special safety related characteristics MAINTENANCE 1 Place the TV set on a stable stand or base that is of adequate size and strength to prevent it from being acc...

Страница 6: ...t 1 3 Operate the TV for at least 15 minutes 1 4 Degauss the TV set using a specific degaussing coil 1 5 Set the brightness and contrast to maximum 1 6 Counter clockwise rotate the R B low brightness...

Страница 7: ...Adjust two tabs of the 6 pole magnet to superimpose red blue line and green line 2 1 6 Remember red and blue movement Repeat steps 2 1 3 2 1 5 until optimal convergence is obtained 2 2 Circumference...

Страница 8: ...en the lamp screw holding the deflection yoke assembly Fig 2 4 pole Magnet Movement 6 pole Magnet Movement Center Convergence by Convergence Magnets Incline the Yoke Up or Down Incline the Yoke Right...

Страница 9: ...the TV 1 5 Repeat the above steps until the TV is degaussed completely 2 Confirmation and Adjustment for Voltage Caution B voltage has close relation to high voltage To prevent X ray radiation set B v...

Страница 10: ...ng the back cover look for the FBT on the main PCB There should be a FCB on the FBT 4 2 Power on the TV and preheat it for 15 min 4 3 Receive a normal TV signal Rotate knob of the FCB until you get a...

Страница 11: ...us data GDET0103 05 Table 3 Function Description for Bus Data Symbol Description Data OSD OSD Horizontal Position 4D OPT Optional Setting B3 RCUT R CUT OFF OPT GCUT G CUT OFF OPT BCUT B CUT OFF OPT GD...

Страница 12: ...TS Hight 60Hz difference from HIT OPT VLIN V Linearity 50Hz OPT PAGE6 VLIS V Linearity 60Hz difference from VLIN OPT VSC VS Correction 50Hz OPT VSS VS Correction 60Hz OPT HBOW OPT HPARA OPT UBLACK 0B...

Страница 13: ...T 04 STBG S TRAP B G 06 STI S TRAP I 08 STDK S TRAP D K 08 STM S TRAP M 03 SSBG S TRAP HP LP B G 08 SSI S TRAP HP LP I 08 SSDK S TRAP HP LP D K 08 PAGE13 SSM S TRAP HP LP M 09 SYNC 03 SYBBN BB judgeme...

Страница 14: ...n 1 Second turn on 1 Bit1 0 NO signal 50Hz 1 NO signal 60Hz 1 Bit2 1 Bit3 Search speed 0 Bit4 0 KEY Turn on 1 POWER Turn on Bit5 FM_band 0 Normal 1Wide 0 Bit6 COLOR 0 NTSC PAL N PAL N 1 NTSC 0 Bit7 0...

Страница 15: ...UCTURE AND CHISSIS FUNCTION DESCRIPTION 1 STRUCTUE BLOCK DIAGRAM 13 Audio Amplifier TMP8873 Video Amplifier H OUT V OUT Power Supply Circuit TUNER AVIN AVIN AVOUT IR KEY Structure Block Diagram for ET...

Страница 16: ...nd bus control EEPROM AT24C16 for data memory LA78040 for vertical output power amplifying TFA9842AJ for audio power amplifying Thick film IC STR G5653 for power circuit adjustment and control The fol...

Страница 17: ...P package The MCU contains 8 bit CPU ROM RAM I O ports timer counters A D converters an on screen display controller remote control interfaces IIC bus interfaces and the Closed Caption decoder The TV...

Страница 18: ...g Italic underline function Two 8 bit internal timer counter 2 ch Conform to CCD REGULATION Time base timer watchdog timer Jitter elimination 16 interrupt sources external 5 internal 11 IIC bus interf...

Страница 19: ...SERVICE MANUAL 3 Block Diagram 17...

Страница 20: ...ble through the IIC bus of the internal connections 2 Power Supply TMPA8873 has some power supplies and GND pins Power supplies related MCU must be applied at the first Power supplies for H VCC and TV...

Страница 21: ...SERVICE MANUAL 5 TERMINAL INTERFACE 19...

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