Haier 21F7A-P Service Manual

SERVICE MANUAL Haier model: 21F7A-P Customer model:MT2024 PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.com.cn ...

3. Replacement of memory IC………………………………………………………….……5 4. Service adjustment……� ...

circuits and components especially for safety purposes. For continued protection, no changes should be made to the original design unless authorized in writing by the manufacturer. Replacement parts must be identical to those used in the original circuits. Service should ...

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1. MEMORY IC. This TV uses memory IC. In the memory IC are memorized data for correctly operating the video and deflection circuits. 2. PROCEDURE FOR REPLACING MEMORY IC (1) Power off Switch the power off and unplug the power cord from AC outlet. (2) Replace IC Be sure to use memory IC written with the initial data values. (3) P ...

Items Description Preset Remark “1” 5/6HSH Horizontal shift ON A “2” 5/6VSL Vertical slop 21 A 5/6VAM Vertical amplitude 45 A 5/6SCL S-correction 20 A 5/6VSH Vertical shift 38 A 5/6VOF OSD Vertical offset 38 A HOF* OSD Horizontal offset 20 A “3” RED Black level offset R 32 A GRN Black level offset G 32 A WPR W ...

1=21dBμV 0=26dBμV 0 EA Bit 6 TILT 1=Enable 0 EA Bit 5 OSO 1=Enable 1 EA Bit 4 FSL 1=Enable 0 EA Bit 3 RESERVE 1 EA Bit 2 FMWS 1=Enable 1 EA Bit 1 RESERVE 1 EA Bit 0 AVL 1=Enable 1 EA 3. OP3 Bit Function Description Preset Remark Bit 7 TDA8377 1=TDA8377 0=TDA9378 1 EA Bit 6 16:9 1=E ...

1. N501 UOC TDA8377 SYMBOL PIN DESCRIPTION STAND BY output. 1 In STAND BY mode, low level (Power OFF). For Power ON this pin will be high. SCL 2 I2C-bus clock line SDA 3 I2C-bus data line TUNING 4 tuning Voltage (Vt) PWM output KEY 5 Control keys input SYSTEM 6 TV system control VOL 7 Sound Volume control PWM output MUTE 8 Sou ...

P1.0/INT1 62 AV1 / AV2 mode Output. P1.1/T0 63 AV /S-VHS mode Output. P1.2/INT0 64 Remote control signal input. Note Pin TV SVHS AV1 AV2 62 1 0 0 1 63 1 1 0 0 2. N902 24C08/PCF8598 PIN Function 1 GND 2 GND 3 Upper resistance 4 GND 5 SDA data wire 6 SCL clock wire 7 GND 8 +5V Power 3. N601: Sound ...

7. IC voltages TDA8377 PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 V 0 3.8 3.6 3.3 3.5 4.4 5.1 1.8 0 0.18 0.17 0 2.3 8 5 3 PIN 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 V 4 0 4 0.5 0.7 0.8 1.9 1.9 3.9 3.8 1.6 3.2 2.3 0 2.3 0.2 PIN 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 V 0.5 0.3 0 1.7 2.4 3.4 8 3.9 0 3.3 0 3.6 1.4 ...