组装电视机维修（国外英文资料）.docVIP

组装电视机维修（国外英文资料） Experience in assembly TV maintenance 1, the CPU is LC863532A 5z001zr0, and the power grid voltage too low, please turn off is on the screen, and you can also see the electricity When there is no signal, the word power grid is too low, please turn off and vibrate up and down. Bus LOW ac-in 63 and HIGH ac-in0, thats not useful. The thought is that the CPU detects the fault of the peripheral circuit. Check the measuring C The PU11 foot is 4V, normal should be 1.6 V, also can break the peripheral circuit of 11 feet, measure this foot. The foot The power supply of the power supply is 10UF without capacity, which is normal. The failure: bus conditioning and maintenance c The pu voltage detects the peripheral circuit. 2, the I2C adjustment failure summary is very high 1. Volume 1 is the biggest: STEREO OPT, WOOFER OPT, PWM volume control options) to 0. 2. The picture has a pattern of flashing: IC SELECT (decoding chip selection) error. 3. No U segment: BAND OPTION is tuned to 2. 4. No AV switch: AV OPTION (AV) is tuned to 2 or 1. 5. Negative image, raster is brighter or darker even white screen, black screen, tian box: will be C.B/W (black and white balance set ) to 0. 6. The image is normal after a one-minute bounce: the RF. AGC is lowered. 7. Black screen and image alternates: the COMB (COMB circuit setting) is set to 0. 8. The POWER grid voltage is too HIGH, please turn off : the POWER HIGH and POWER LOW are adjusted higher. 9. Open standby program or press any key shutdown: MOD1 is not appropriate. 10. Adjustable field amplitude, linear invalidation (excluding hard failure) : low MOD0. 11. The volume, brightness, color and so on are only in the high middle and low three gear: remote control turn off and turn on. The power supply voltage is high: 1, the design of the power standby circuit of the mixer is too simplistic, and it is recommended that the power supply 1015 be changed to A966 and the voltage is stable Be sure to be reliable 2, adjustable, 1K