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Содержание LET39Z18HF

Страница 1: ...uals of potential dangers in attempting to service a product Products powered by electricity should be serviced or repaired only by experienced professional technicians Any attempt to service or repair the product or products dealt with in this service information by anyone else could result in serious injury or death Haier Group 2011 Qingdao Haier Electronics Co Ltd All rights reserved Unauthoriz...

Страница 2: ...1 4 1 2 General Guidelines 1 4 How to Read this Service Manual 4 7 Service Manual Model No 1 3 Location of Controls and Components 3 1 Board Location 3 2 Main Board 3 3 Power Board 3 4 LCD Panel 4 Disassemble and Assemble 7 8 8 8 11 12 14 5 Electrical Parts 19 5 1 Circuit Diagram 19 6 Trouble shooting 28 2 Specification ...

Страница 3: ...Service Manual Model No 02 ...

Страница 4: ...instructions in the literture accompanying the appliance 1 3 2 Be careful to the electrical shock 7R SUHYHQW GDPDJH ZKLFK PLJKW UHVXOW LQ HOHFWULF VKRFN RU UH GR QRW H SRVH WKLV 79 VHW to rain or excessive moisture This TV must not be exposed to dripping or splashing water DQG REMHFWV OOHG ZLWK OLTXLG VXFK DV YDVHV PXVW QRW EH SODFHG RQ WRS RI RU DERYH WKH 79 1 3 3 Electro static discharge ESD Som...

Страница 5: ... UHFHLYHU RQO WKH WHVW WXUHV VSHFL HG LQ WKLV VHUYLFH PDQXDO CAUTION R QRW FRQQHFW WKH WHVW WXUH JURXQG VWUDS WR DQ KHDW VLQN LQ WKLV UHFeiver 3 Do not spray chemicals on or near this receiver or any of its assemblies 4 Unless specified otherwise in this service manual clean electrical contacts only by applying the following mixture to the contacts with a pipe cleaner cotton tipped stick or compar...

Страница 6: ... static electricity Such components commonly are called Electrostatically Sensitive ES Devices Examples of typical ES devices are integrated circuits and some field effect transistors and semiconductor chip components The following techniques should be used to help reduce the ncidence of component damage caused by static by static electricity 4 Use only an anti static type solder removal device So...

Страница 7: ...ibed in the table below Note A note provides information that is not indispensable but may nevertheless be valuable to the reader such as tips and tricks Caution A caution is used when there is danger that the reader through incorrect manipulation may damage equipment loose data get an unexpected result or has to restart part of a procedure Warning A warning is used when there is danger of persona...

Страница 8: ...8 GRAY TO GRAY Angel of View 176o Color Display 16777216 No of Preset Channels 200 OSD Language Eng Color System PAL Audio System BG DK I Audio Output Power Built in W 10W 2 Audio Output Power outer W No Total Power Input W 100W Voltage Range V AC100V 240V Power Frequency Hz 50 60Hz LET39Z18H 2 Specification ...

Страница 9: ...ber Description A Board B Board 3 2 Main Board Main board Power board DH1QP0M0102M 0113050494 B CN4 Main Power Supply CN3 Inverter CN19 DVD Power Control CN11 LVDS Interface CN16 Amplifier Power Supply CN17 Speaker CN10 IR Key Interface CN25 External HDMI In CN15 External USB In CN20 DVD Signal In ...

Страница 10: ...anual Model No 09 3 2 1 Function Description Main Board Process signal which incept from exterior equipment then translate into signal that panel can display Main board connector Power connectors CN3 CN4 CN3 CN4 ...

Страница 11: ...CN10 Pin number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Signal name GND K7 K6 K5 K4 K3 K2 K1 K0 GND IR LED_G LED_R 5V Description Ground Power key NC CH key CH key Vol key Vol key Meny key TV AV key Ground IR Receive Green Indicator Red Indicator 5V DC Power Supply ...

Страница 12: ...nector type ㄟᆀරਧ VH 3A2 3 96mm or equivalent Pin assignments Table Pin No ᕅ㝊ਧ Symbol ㅖਧ Description 䘠 1 AC L 3 AC N Location ս㖞 CON5 Connector type ㄟᆀරਧ XH 4W 2 5mm or equivalent Pin assignments Table Pin No ᕅ㝊ਧ Symbol ㅖਧ Description 䘠 1 2 GND 3ˈ4 24V DC Output ⴤ 䗃ࠪ Location ս㖞 CON4 Connector type ㄟᆀරਧ XH 13W 2 5mm or equivalent Pin assignments Table ...

Страница 13: ...nt RGB vertical stripe Physical Size mm 955 04 W 545 66 H 2 00 D Typ Display Mode Transmissive mode Normallly black Contrast Ratio 5000 1 Typ Typical value measure at CMI s module Glass thickness Array CF mm 0 5 0 5 Viewing Angle CR 20 88 88 H 88 88 V Typ CR 20 ʁ Typical value measure at CMI s module Color Chromaticity Please refer to color chromaticity on p 32 Cell Transparency 5 6 Polarizer Surf...

Страница 14: ...t pixel Odd LVDS Signal First pixel Odd LVDS Signal Ground First pixel Odd LVDS Signal First pixel Odd LVDS Signal First pixel Odd LVDS Signal First pixel Odd LVDS Signal Ground NC NC Second pixel Odd LVDS Signal Second pixel Odd LVDS Signal CH2 0 CH2 0 CH2 1 CH2 1 CH2 2 CH2 2 GND CH2CLK CH2CLK CH2 3 CH2 3 GND CH2 4 CH2 4 Ground Ground Second pixel Odd LVDS Signal Second pixel Odd LVDS Signal Seco...

Страница 15: ...4 Disassemble and assemble Service Manual Model No 14 Front Back ...

Страница 16: ...Service Manual Model No 15 4 1 Remove the 4 screws as below picture 4 2 Remove the 17 screws on the back cabinet ...

Страница 17: ...Service Manual Model No 16 4 3 Remove the 4 screws on the back cabinet 4 4 Remove the 2 screws as below picture ...

Страница 18: ...Service Manual Model No 17 4 5 Remove the 3 screws on the fixing board 4 6 Remove the 2 screws as below picture ...

Страница 19: ...Service Manual Model No 18 4 7 Remove the 4 screws as below picture 4 8 Remove the PCB board as below picture ...

Страница 20: ...RKP f 1 B 1 5 RKP f 9 B67 5 1 RKP f B2 1 9 39 9 1 3 1 X 9 9 9 X 9 9 9 9 X 9 9 X 9 9 6 1 6 1 2 0 3 1 1 8 5 75 1 S 1 32 f 9 X 5 f 9 5 RKP X 5 f 9 5 RKP 5 RKP X 9 9 1 1 1 X 9 9 8 5 RKP 9 9 0 B 9 0 B 9 1 X 9 9 0 B 9 X 9 9 1 0 B 9 8 RKP f 9 9 36 B9 RKP f X 9 9 X 9 9 9 9 2 9 2 8 75 X 9 f h 9 9 2 9 2 8 75 X 9 9 9 B67 X 9 9 9 B67 1 9 B6 7 X 9 f h 5 9 X 9 9 X 9 f h 1 5 RKP 5 RKP X 9 9 X 9 9 1 1 X 5 f 9 9 9...

Страница 21: ...3 1 B 1 0 8 B9 6 0 3 B0 8 7 B5 7 5 6 7 0 B5 0 B5 0 B5 0 B5 0 B5 0 B5 0 B5 0 B5 9 B 1 9 B 6 7 9 B 5 9 B 1 6 B 2 8 7 6 B52 8 7 X 9 9 X 9 9 X 9 9 X 9 9 1 9 9 5 1 RKP f 3 B 3 3 B 3 5 B B X 9 9 X 9 9 0 8 B 1 0 8 B5 1 0 8 B5 1 0 8 B 1 2 7 2 2 7 5 6 7 0 8 B 6 X 9 9 X 9 9 X 9 9 X 9 9 X 9 9 9 9 1 5 RKP f 5 RKP f 5 RKP f 5 RKP f 5 RKP f 5 RKP f 5 RKP f 5 RKP f B 1 7 65 B 5 9 2 3 2 9 B9 3 3 1 3 1 3 1 3 1 3 1...

Страница 22: ...4 B 9 4 B 4 9 4 B 4 9 664 B 4 4 9 664 B 4 9 B 1 B 9 66B 9 664 B 4 6 9 4 B 4 9 664 B 0 4 6 9 664 B 4 9 4 B 4 9 4 B 4 9 4 B 4 9 664 B 4 4 0 4 9 B 1 9 5 4 9 66B 9 66B 9 B 5 6 2 7 5 6 7 7 0 1 6 6 3 3 3 1 9 B 9 66B 1 3 5 3 5 5 5 7 9 66B 9 B 1 1 B 4 1 B 9 5 0 1 B 0 7 1 B 7 9 66B 0 9 66B 0 9 66B 3 9 66B 3 9 66B 7 9 66B 7 9 B 1 9 B 5 9 B 5 8 7 4 5 5 9 5 9 1 5 9 1 1 5 RKP X 9 9 5 RKP X 9 9 1 5 9 1 5 RKP 5 ...

Страница 23: ... X 9 9 B0 XWH 1 1 X 5 f 9 1 X 5 f 9 1 1 X 9 9 0 5 RKP f 1 X 9 f h X 9 9 1 1 1 0 X 9 f h 5 RKP f 1 9 7 P P 9 7 P P 0 8 7 B 0 8 7 B5 X 9 9 X 9 9 X 5 f 9 X 5 f 9 1 1 2 8 7 5 2 8 7 5 RKP f 5 1 RKP f 5 RKP f 5 RKP f 5 1 RKP f 9 1 1 1 9 9 1 1 1 6 60 9 X 9 9 X 9 f h 5 6 3 6 3 5 RKP f 1 0 B 9 B6KXW RZ Q 1 X 5 f 9 X 9 9 X 9 9 X 9 9 9 1 9 1 0 3 B 1 0 3 B5 1 1 1 1 3 2 8 7 5 2 8 7 6 3 5 6 3 0 3 B0 8 7 ...

Страница 24: ... 6 B 3 8 6 B 0 6 9 9 9 66 8 1 9 B 0 3 0 8 B 6 0 8 B 6 5 RKP f 5 RKP f 5 RKP f 5 RKP f X 9 9 X 9 9 1 1 5 RKP f 5 RKP f 5 RKP f 5 RKP f X 9 9 X 9 9 1 1 5 RKP f 1 X 9 9 3 B 8 B 1 3 B 8 B5 1 9 B 1 9 B5 1 5 RKP f 5 RKP f X 9 9 1 5 RKP f 5 RKP f X 9 9 1 5 RKP f 9 B B 1 9 B 1 5 RKP f 1 1 9 B 0 3 9 B 0 3 9 B 1 3 B 8 B 1 3 B 8 B5 1 9 B5 1 6 B 1 6 B5 1 9 B5 1 9 B 1 0 8 B 1 0 8 B5 1 5 RKP f 5 RKP f 5 RKP f 5...

Страница 25: ...1 1 5 RKP f 1 1 6 5 7 B9 X 5 f 9 5 RKP f 1 6 B 1 6 B5 1 6 B9 1 1 9 8 1 1 1 6 5 7 B L Q 6 5 7 B L Q 6 5 7 B5 L Q 1 9 5 1 9 5 1 9 5 9 6 1 9 5 1 9 5 1 9 5 9 6 5 RKP f 5 RKP f 6 B5 L Q 6 B L Q 6 B L Q 5 RKP f 5 RKP f 5 RKP f 5 RKP f 6 5 7 B L Q 6 5 7 B L Q 6 5 7 B5 L Q 1 1 1 X 5 f 9 X 5 f 9 X 5 f 9 5 1 RKP f 6 2 1 S 5 f 9 6 2 5 RKP f 5 RKP f 5 RKP f 5 RKP f X 9 9 1 5 RKP f 5 RKP f X 9 9 1 5 RKP f 5 RK...

Страница 26: ...3 0 B 9 1 0 B 9 1 X 9 9 X 9 9 X 9 9 1 36 B9 X 9 9 5 1 RKP f 0 B X 9 9 5 9 B B6 5 9 B B6 5 9 B B6 5 9 B B6 6 7 B6 6 7 B6 1 1 1 5 RKP f 5 RKP f 5 RKP f 5 RKP f 5 RKP f 0 B 9 1 5 9 B B6 5 9 B B6 1 1 6 1 6 1 5 1 5 5 1 5 5 1 5 5 1 5 1 6 6 1 9 3 6 1 6 1 1 6 1 5 B 2 7 3 8 0 B 9 1 0 B5 0 B5 0 B5 0 B5 0 B5 0 B5 0 B5 0 B5 5 9 B B6 5 9 B B6 5 B 2 7 3 8 3 2 1 1 1 5 RKP f 5 RKP f 5 RKP f 1 1 6 1 6 1 5 1 5 5 1 ...

Страница 27: ...X 9 9 X 9 9 1 1 1 5 RKP f X 5 f 9 1 4 0 5 RKP f 1 1 9 7 5 B 9 6 6 1 1 1 1 1 1 7 7 7 1 5 B B7 9 7 9 7 8 1 5 B6 7 8 1 5 B6 B2 8 7 B2 8 7 X 9 9 9 79 X 9 f h 7 8 1 5 B 7 8 1 5 B 7 9 79 5 RKP f 5 RKP f 1 S 1 32 f 9 1 S 1 32 f 9 1 1 5 RKP f 5 RKP f 7 8 1 5 B6 7 8 1 5 B6 5 B ...

Страница 28: ...1 1 3 B 3 B 1 3 9 B 0 2 9 B 3 9 66 B 9 3 B 3 B 7B 3 B 3 B 1 9 3 B5 B 1 8 0 7 9 B 0 2 1 1 1 1 9 B 0 2 9 B 0 2 9 B 0 2 1 9 B 0 2 9 B 0 2 9 B 9 B 9 B 0 2 9 B 9 B 0 2 9 B 0 2 9 B 1 9 B 0 2 9 B 0 2 1 9 B 0 2 9 B 0 2 9 B 0 2 B 54 B1 B B B2 B1 B B 25 B1 B B 7 6 B 7 6 B 7 6 B 7 6 B 7 6 B 7 6 B 7 6 B 7 6 B 7 6 B 7 6 B 7 6 B 7 6 B 7 6 B 7 6 B0 2 9 7 6 B0 2 6 7 5 7 7 6 B6 7 5 7 B B B B B B B B B B B B B B5 6...

Страница 29: ... if 8 B3 1 LV 9 KDQJH 8 3RZHU RQ DQG FKHFN LI 1 KDQJH 8 1 B3 1 LV 9 ǃ KHFN LI 4 DQG 4 KHFN LI 1 3 1 DUH 1 DUH QRUPDO ǃ8SJUDGH VRIWZDUH KHFN LI 1 B3 1 DUH 9 DQG 3 1 LV 9 KHFN SRZHU ERDUG DQG 1 KHFN 8 G surrounding KHFN LI 8 LV 9 KHFN SRZHU ERDUG DQG SRZHU FRUG KHFN LI 8 DQG 8 DUH 9 DQG 9 1 1 DQG surrounding components 2 KHFN LI LV 9 KHFN 8 8 1 2 KHFN 6 Trouble shotting ...

Страница 30: ...hite Screen Y Is upgrade software OK Wrong Software Y N Check if the LVDS cable is correct and connected tightly N Y Check if the voltage of CN11_PIN1 is OK Determined by the screen N Y Check the circuit between U1 and CN11 Y N Change the LVDS cable Check Q1 Q4 d CN Change U1 Change the defective t and CN5 Change U1 components ...

Страница 31: ...creen Whit Y N N Y Check if the voltage of CN3_PIN3 BLON Signal is high level White screen N Check if the voltage of CN3_PIN4 is normal 1 Check Q3 and surrounding components Y N Check if inverter power is normal N Y 1ǃCheck Q3 and surrounding components 2ǃUpgrade software again Check the circuit between BLON and U1_PIN138 Check power board Inverter is broken ...

Страница 32: ...0 12 19 20 are 24V Y Check if the voltage of UA1 PIN2 i hi h th 3V Ch k if di Y UA1_PIN2 is higher than 3V and the voltage of UA1_PIN4 is lower than 0 3V Check if surrounding components of UA1 are normal Y N Check the Check R16 R18 R Change UA1 Replace related components N Check if U1_PIN201 203 have signal output N Change U1 power supply circuit Reset Check Speaker R16 R18 R A14 and RA1 have sign...

Страница 33: ...No All Channels No Check if U1_PIN194 196 have audio signal N N Y Check if the voltage of U1_PIN197 is 3V Check FB3 Sound Sound N audio signal Check if the voltage of U15_PIN16 is 5V N Y N Change C54 Check if the voltage of C54 is 1 5V Check R139 N Check if the control signal of U15_PIN9 10 are normal Y Check U1_PIN249 250 Change U1 Y Y Check if the audio signal of U15_PIN3 13 are normal Check C23...

Страница 34: ...eck if the voltage of Y Change T1_PIN6 7 and U7_PIN41 42 components Y N T1_PIN4 is between 0 and 2 5V Check RF_AGC circuit such as R313ǃ T1 ATV can t scan any channel DVB T DVB C can t scan any channel Check if U1 PIN217 Y circuit such as R313ǃ Q20 and so on Check RP17 Check if U7_PIN15 Change U1 Check if U1_PIN217 220 have TS signals Y N 1 Check if 3 3V 1V power supply of U7 are normal 2 Check if...

Страница 35: ...contact or not clean Change HDMI terminal Y Check R286 Check if the I2C signals of OK N N N N Y Change the defective components and R287 U17_PIN33 34 are normal Check if the circuit between HDMI terminal and U17 is normal Check if the circuit between U17 PIN36 N Y Change the defective Y Check if 3 3V power supply of U17 Change U17 between U17_PIN36 48 and U1 is normal N Y Change the defective comp...

Страница 36: ...HS input signals of U1_PIN150 151 are normal Y N Y N Do Auto adjust process The data of white balance is wrong Check the circuit between U1 PIN152 1 Check the circuit between U1 PIN150 151 OSD setting doesn t match reset again or Check the circuit between U1 PIN150 151 process wrong initial EEPROM setting U1_PIN152 1 56 and R G B signals of CN12 U1_PIN150 151 and VS HS signals of CN12 input mode d...

Страница 37: ...k the circuit b t Check if the voltage of Check the circuit between CN13_PIN20 and U1_PIN175 D2 6 C190 C191 R229 R230 signals of U1_PIN163 165 166 are normal between CN13_PIN19 and U1_PIN169 g Q16 and Q18 are 12V circuit between CN13_PIN8 and U1_PIN143 D3 0 R248 R250 1ǃCheck Check the R G B Y N Check the circuit between Y N C73 R62 2ǃThe data of white balance is wrongˈinitial EEPROM circuit betwee...

Страница 38: ...and R59 are OK CVBS signal of U1_PIN181 is normal Check R163 and Change C58 and R59 Y N Check if U1_PIN157 161 have Check if U11_PIN2 5 Y N have signals PIN1 are normal Y Y N Change U1 and U1_PIN251 161 have signals 11 have signals Check if D9 C146 C14 9 R144 R145 and R150 are O Y Y N N Check the circuit between U11_PIN4 7 9 and U1 PIN157 161 Y N Check C74 and R63 OK Ch CN6 Change the d f ti Check...

Страница 39: ...U n R e g i s t e r e d ...

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