Related Manuals for Haier 21F7A-P
Summary of Contents for Haier 21F7A-P
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Page 1: Service Manual
21” Colour Television 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... -
Page 2: Table Of Contents
CONTENTS Safety precautions……………………………………………………………..……………3 TV block diagram……………………………………………………………………..…….4 Replacement of memory IC………………………………………………………….……5 Service adjustment……………………………………………………………..…………...5 ICs functional description…………………………………………………………………8 Test point waveform………………………………………………………………………10 All ICs voltages……………………………..……………………………………………….10 Purity / convergence adjustment………………………………………………………11 DVD maintenance…………………………………………………………………………13 10. List of Parts ………………………………………………………………………….…….14 11. Exploded view…………………………………………………………………Attached Circulate diagram…………………………………………………………………Attached PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.com.cn... -
Page 3: Safety Precautions
1. SAFETY PRECAUTIONS The design of this product contains special hardware, many Isolation Check circuits and components especially for safety purposes. For (Safety for Electrical Shock Hazard) continued protection, no changes should be made to the After re-assembling the product, always perform an isolation original design unless authorized in writing by the check on the exposed metal parts of the cabinet (antenna manufacturer. -
Page 4: Tv Block Diagram
Block diagram TDA8377PS/N2 series with mono intercarrier sound demodulator PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.com.cn... -
Page 5: Replacement Of Memory Ic
3. REPLACEMENT OF MEMORY IC 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. - Page 6 Adjustable Items Direct access key Items Description Preset Remark “1” 5/6HSH Horizontal shift “2” 5/6VSL Vertical slop 5/6VAM Vertical amplitude 5/6SCL S-correction 5/6VSH Vertical shift 5/6VOF OSD Vertical offset HOF* OSD Horizontal offset “3” Black level offset R Black level offset G White point R White point G White point B...
- Page 7 2. OP2 Function Description Preset Remark Bit 7 Ident sensitive PAL 1=21dBμV 0=26dBμV Bit 6 TILT 1=Enable Bit 5 1=Enable Bit 4 1=Enable Bit 3 RESERVE Bit 2 FMWS 1=Enable Bit 1 RESERVE Bit 0 1=Enable 3. OP3 Function Description Preset Remark Bit 7...
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Page 8: Ics Functional Description
5. ICs functional description 1. N501 UOC TDA8377 SYMBOL DESCRIPTION STAND BY output. In STAND BY mode, low level (Power OFF). For Power ON this pin will be high. C-bus clock line C-bus data line TUNING tuning Voltage (Vt) PWM output Control keys input SYSTEM TV system control... - Page 9 RESET Ground VDDP Digital supply to periphery (+3.3 V) P1.0/INT1 AV1 / AV2 mode Output. P1.1/T0 AV /S-VHS mode Output. P1.2/INT0 Remote control signal input. Note SVHS 2. N902 24C08/PCF8598 Function Upper resistance SDA data wire SCL clock wire +5V Power 3.
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Page 10: Test Point Waveform
6. Test point Waveforms 3.8Vpp 2.5Vpp 2.5Vpp 1.2Vpp 2.6Vpp TDA8377 PIN38 TDA8377 PIN40 TDA8377 PIN53 TDA8377 PIN52 TDA8377 PIN51 5Vpp 0.9Vpp 95Vpp 95Vpp 95Vpp CRT KR CRT KG CRT KB TDA8377 PIN33 TDA8377 PIN34 1.3Vpp 0.8Vpp 1Vpp TDA8377 PIN21 TDA8377 PIN22 TDA8377 PIN59 7. -
Page 11: Purity / Convergence Adjustment
8. PURITY / CONVERGENCE ADJUSTMENT PURITY ADJUSTMENT WEDGE Demagnetize CRT with the demagnetizer. DEFLECTION YOKE Loosen the retainer screw of the deflection yoke. Remove the wedges. Input a green raster signal from the signal generator, and turn the screen to green raster. Move the deflection yoke backward. - Page 12 STATIC CONVERGENCE ADJUSTMENT 1. Input a crosshatch signal. 2. Using 4-pole convergence magnets overlap the red and blue lines in the center of the screen (Fig. 1) and turn them to magenta (red/blue). (FRONT VIEW) 3. Using 6-pole convergence magnets overlap the magenta (red/blue) and green lines in the center of the screen and turn them to white.
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Page 13: Dvd Maintenance
10. List of Parts PART LOCATI DESCRIPTION NUMBER 0090402207 AV WIRE TJC3-8Y-6Y-650 0090402478 POWER WIRE 0090101284 N301B RADIATOR RADIATOR 0094401409 N301C I.C. TDA8357J 0090600097 N301D SCREW SJ2831-87 ST3X8F 0090600097 V401B SCREW SJ2831-87 ST3X8F 0090100775 V401A RADIATOR QHS-30184A 0094401644 V401 TRANSISTOR TT2140 0090100310 N801A... -
Page 14: Standby
0094200098 C414 PLASRIC FILM CAPACITOR CL21X-400V-104-J-07-A-A 0094200099 C227 PLASRIC FILM CAPACITOR CBB13-50V-104-J-07-A-A 0094201752 C416 PLASRIC FILM CAPACITOR CBB21B-400V-0.47μF-J-20-A 0094201022 C409 PLASRIC FILM CAPACITOR CBB81-1.6KV-8200pF-J-25-A 0094200105 C802A PLASRIC FILM CAPACITOR MKT61-275V-104-M-15-G-A 0094200043 C222 ALUMINIUM ELECTROLYSE CAPACITOR CD110X-50V-1μF-M-F05 0094201011 C846 ALUMINIUM ELECTROLYSE CAPACITOR CD110X-25V-1000μF-M-05-A 0094201319 C811... - Page 15 0094102168 R511 OXIDATION FILM RESISTOR RY17-2W-18KΩ-J-20-D 0094102168 R521 OXIDATION FILM RESISTOR RY17-2W-18KΩ-J-20-D 0094102168 R531 OXIDATION FILM RESISTOR RY17-2W-18KΩ-J-20-D 0094102586 R505 FUSIBLE RESISTOR RF10-2W-0.68Ω-J-05-C 0094100128 R506 FUSIBLE RESISTOR RF10-2W-68-J-05-E-A 0094200727 C509 ELECTROLYSE CAPACITOR CD110X-250V-4.7μF-M-F05 0094200971 C510 CERAMIC CAPACITOR CT1-B-2KV-1000PF-K-07-A 0094102666 R812A OXIDATION FILM RESISTOR RY17S-2W-24-J-12.5-L-A 0094401748...
- Page 16 0094100029 R211 CARBON FILM RESISTOR RT13-1/6W-4.7K-J------T 0094100029 R212 CARBON FILM RESISTOR RT13-1/6W-4.7K-J------T 0094101328 R215 CARBON FILM RESISTOR RT13-1/6W-3.3K-J------T 0094101328 R266 CARBON FILM RESISTOR RT13-1/6W-3.3K-J------T 0094101328 R247 CARBON FILM RESISTOR RT13-1/6W-3.3K-J------T 0094101328 R220 CARBON FILM RESISTOR RT13-1/6W-3.3K-J------T 0094101328 R278 CARBON FILM RESISTOR RT13-1/6W-3.3K-J------T 0094101328 R747...
- Page 17 0094100132 R254 CARBON FILM RESISTOR RT13-1/6W-180Ω-J--T52 0094100020 R264 CARBON FILM RESISTOR RT13-1/6W-470Ω-J--T52 0094101595 R807 REAL CHIP REISTOR RI40-1/2W-12MΩ-J-T52 0094100103 RX801 REAL CHIP REISTOR RS11-1/2W-3.3M-K------T 0094100106 R260 METAL FILM RESISTOR RJ13-1/6W-9.1K-J------T 0094100106 R262 METAL FILM RESISTOR RJ13-1/6W-9.1K-J------T 0094102210 R259 METAL FILM RESISTOR RJ13-1/6W-100K-J------T 0094101159 R228...
- Page 18 0094200095 C401 PLASRIC FILM CAPACITOR CL21X-100V-103-J------F 0094200097 C413 PLASRIC FILM CAPACITOR CL23B-400V-472-J------F 0094201462 C814 PLASRIC FILM CAPACITOR CL21X-63V-104-J------F 0094200751 C233 ALUMINIUM ELECTROLYSE CAPACITOR CD110X-50V-4.7μF-M-F05 0094200008 C230 ALUMINIUM ELECTROLYSE CAPACITOR CD110X-16V-10μF-M-F05 0094200008 C246 ALUMINIUM ELECTROLYSE CAPACITOR CD110X-16V-10μF-M-F05 0094200008 C250 ALUMINIUM ELECTROLYSE CAPACITOR CD110X-16V-10μF-M-F05 0094200008 C842...
- Page 19 0094400056 VD405 DIODE TTVR10G------T 0094400059 VD810 DIODE TERB4304------T 0094400615 DZ808 DIODE MTZJ3.9B------T 0094400616 DZ205 DIODE MTZJ4.7B------T 0094400617 DZ102 DIODE MTZJ5.1B------T 0094400617 DZ402 DIODE MTZJ5.1B------T 0094400493 DZ101 DIODE MTZJ9.1B------T 0094400473 VD811 DIODE 1N4004------T 0094400473 VD812 DIODE 1N4004------T 0094400473 VD813 DIODE 1N4004------T 0094400473 VD814 DIODE...
- Page 20 0094400577 V512 TRANSISTOR BF421 0094400577 V522 TRANSISTOR BF421 0094400577 V532 TRANSISTOR BF421 0094400049 VD816 DIODE 1N4148------T 0094400049 VD504 DIODE 1N4148------T 0094400049 VD505 DIODE 1N4148------T 0094400049 VD201 DIODE 1N4148------T 0094400049 VD202 DIODE 1N4148------T 0094400049 VD809 DIODE 1N4148------T 0094400049 VD620 DIODE 1N4148------T 0094400049 VD217 DIODE...
- Page 21 φ1.6*3.0 0090100008 EY42 RIVET φ1.6*3.0 0090100008 EY43 RIVET φ1.6*3.0 0090100008 EY44 RIVET φ1.6*3.0 0090100008 EY45 RIVET φ1.6*3.0 0090100008 EY46 RIVET φ1.6*3.0 0090100008 EY47 RIVET φ1.6*3.0 0090100008 EY48 RIVET φ1.6*3.0 0090100008 EY49 RIVET φ1.6*3.0 0090100008 EY50 RIVET φ1.6*3.0 0090100008 EY51 RIVET φ1.6*3.0 0090100008 EY52...
- Page 22 φ0.58mm/5mm------B 0094101552 L305 WIRE φ0.58mm/5mm------B 0094101552 W304 WIRE φ0.58mm/5mm------B 0094101552 R101 WIRE φ0.58mm/8mm------B 0094101552 W709 WIRE φ0.58mm/6mm------B 0094101552 W610A WIRE φ0.58mm/7.5mm------B 0094101552 W710 WIRE φ0.58mm/7.5mm------B 0094101552 R713 WIRE φ0.58mm/7.5mm------B 0094101552 W721 WIRE φ0.58mm/7.5mm------B 0094101552 W725 WIRE φ0.58mm/7.5mm------B 0094101552 W801 WIRE φ0.58mm/7.5mm------B 0094101552 W802...
- Page 23 φ0.58mm/7.5mm------B 0094101552 R232 WIRE φ0.58mm/7.5mm------B 0094101552 R405 WIRE φ0.58mm/7.5mm------B 0094101552 R719 WIRE φ0.58mm/7.5mm------B 0094101552 W707 WIRE φ0.58mm/7.5mm------B 0094101552 W403 WIRE φ0.58mm/7.5mm------B 0094101552 L210 WIRE φ0.58mm/8.5mm------B 0094101552 R401 WIRE φ0.58mm/9mm------B 0094101552 W612 WIRE φ0.58mm/10mm------B 0094101552 W102 WIRE φ0.58mm/10mm------B 0094101552 W105 WIRE φ0.58mm/10mm------B 0094101552 W232...
- Page 24 φ0.58mm/15mm------B 0094101552 F802 WIRE φ0.58mm/17.5mm------B 0094101552 W810 WIRE φ0.58mm/17.5mm------B 0094101552 W827 WIRE φ0.58mm/17.5mm------B 0094101552 R812 WIRE φ0.58mm/17.5mm------B 0094101552 R817A WIRE φ0.58mm/16mm------B 0094101552 W828 WIRE φ0.58mm/20mm------B 0094101552 W611 WIRE φ0.58mm/20mm------B 0094101552 W831 WIRE φ0.58mm/7.5mm------B 0094101552 W412 WIRE φ0.58mm/7.5mm------B 0094101552 W737 WIRE φ0.58mm/5mm------B 0094101552 W818A...
- Page 25 0094500021 LD02 FIXED INDUCTOR LGA0203-100-K------T 0091801996 0091801996 V1.0 0094100074 CARBON FILM RESISTOR RT13-1/6W-20KΩ-J-T52 0094100074 CARBON FILM RESISTOR RT13-1/6W-20KΩ-J-T52 0094400192 VD013 TRANSISTOR KSC815-YTA------F 0094200747 CD01 ALUMINIUM ELECTROLYSE CAPACITOR CD110X-16V-100μF-M-F05 0094300104 XZ1003 SOCKET TJC3-5A 0094004386 RM01 INFRARED RECEIVER(IR) HS-0038BI.C. SWITCH 0094000440 TOUCH SWITCH KFC-A06-21050 9001 0094400730...
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Page 26: Exploded View
0090207744 BACK-COVER MTAA2110AC--Q 0090600015 SCREW SJ2824-87 ST4*12F 0090506507 CARTON 0090506312 PACKING BAG FOR USER MANNUAL 0090505495 SERVICE CARD 0090500018 PLASTIC BAG 240*160 0090206957 0094011232A REMOTE CONTROLLER 11、Exploded view PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.com.cn...