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SERVICE MANUAL

MODEL: 21K8US

CHASSIS: NX56E-LA

Содержание 21K8US

Страница 1: ...SERVICE MANUAL MODEL 21K8US CHASSIS NX56E LA...

Страница 2: ...ce of uninsulated voltage within the products enclosure that may be of sufficient magnitude to constitute a risk of electric shock to the person The exclamation point within an equilateral triangle is...

Страница 3: ...nnel 8 Do not subject your television set to impact of any kind Be particularly careful not to damage the picture tube surface 9 Unplug this television set from the wall outlet before cleaning Do not...

Страница 4: ...porting structure grounding of the lead in wire to an antenna discharge unit size of grounding conductors location of antenna discharge unit connection to grounding electrode and requirements for the...

Страница 5: ...21 If you are unable to restorenormal operation by following the detailedprocedurein your operating instructions do not attempt any further adjustment Unplug the set and call your dealer or service te...

Страница 6: ...TCL Thomson Electronics R D Center Shen Zhen Lab Chassis Name Serial No Issued On Page Updated On Version Product Functional Specification NX56 LA 2008 5 19 1 of 7 1 0...

Страница 7: ...be reproduced or copied or used as the basis for the manufacture or sale of apparatus or devices without the written permission of TCL Thomson Electronics Version Information Version states by two Ar...

Страница 8: ...repared by OLSHQJ Checked by Released by Prepared by OLSHQJ Checked by Released by Revised by Checked by Released by Revised by Checked by Released by Chassis Name Issued On Updated On 3 of 7 9 6 6 0...

Страница 9: ...ide Screen Switching Comb filter Picture Enhancement LTI CTI Black Stretch Dynamic Skin Others Picture Control General Brightness X X Sharpness X X Contrast X X Tint X X Color X X Picture Control Spec...

Страница 10: ...glish Portugal Espanol English Portugal Espanol Features General AT Biological Clock Calendar Clock Channel Swap X X Channel Naming Child Lock X X Favorite Channel X X Game Hotel Mode X X High Sensiti...

Страница 11: ...BS Component In YPbPr Cinch for 50Hz In Y C Cinch CVBS Stereo 1 1 1 2 In Y C Cinch CVBS Mono In Cinch CVBS Stereo In Cinch CVBS Mono Out Cinch CVBS Stereo Out Cinch CVBS Mono 1 follow TV 1 follow TV Y...

Страница 12: ...Indication on BACKOVER Made in in family sheet FCC Elect Shock Caution Label CE Elect Shock Caution Label Warning Label Others Miscellaneous Mains Voltage 100 240V 100 240V Mains Frequency 50 60Hz 50...

Страница 13: ...TCL THOMSON Electronics R D Center Shen Zhen Lab Chassis Name NX56 LA Serial No Issued on 2008 05 19 Page Page 1 of 15 Updated on 2010 01 27 Version 2 2 NX56 LA Chassis Alignment Procedure...

Страница 14: ...cations are the property of TCL Thomson Electronics and shall not be reproduced or copied or used as the basis for the manufacture or sale of apparatus or devices without the written permission of TCL...

Страница 15: ...ed by 21M63US Released by 03 DM62SAE SC31S 21M63US NX56 LA Prepared by LIPENG 2008 07 4 Checked by 21M83S Released by 03 DM83SAE SC31S 21M83S NX56 LA All NX56 LA chassis Prepared by LIPENG 2009 02 23...

Страница 16: ...KEY had set to ON 1 2 When the power on with FACTORY HOTKEY had set to ON 1 the set will enter the P Mode automatically 1 2 Exit the P Mode Press the RECALL or MENU key on RC to exit the P Mode 1 3 Ke...

Страница 17: ...of alignment procedure B adjustment Electrical properties checking for chassis RF AGC adjustment Parameter setup White balance Adjustment Aging Adjustment of focus voltage Adjustment of screen voltage...

Страница 18: ...nected and inserted 2 Main voltage is at 220VAC 50Hz voltage range 110VAC 240VAC 50Hz 3 Connect a voltmeter to B Cathode of D808 and switch on the set 4 Input Philips test pattern signal and standard...

Страница 19: ...until the hint display AGC just change between 0 and 1 3 3 Screen Focus adjustment Notes Alignment below should be done after 15 minutes warm up of TV 1 Input cross hatch pattern signal to RF input 2...

Страница 20: ...er OSD menu Brightness and Contrast items You can adjust these items to get the expect intensity when adjusting the white balance B YUV white balance black level offset setup It is not need to adjust...

Страница 21: ...alue for NTSC vertical geometry Table 3 5 1 The vertical geometry adjustment OSD menu setup and option page 1 OSD menu Default Value Description Remark VSLOPE 50 32 Vertical slope VS Adjust to right v...

Страница 22: ...SC geometry See below description Notes 1 For NTSC signal the 50 will replace with 60 2 For NTSC signal only the HCEN 60 and HSIZE 60 items need the adjustment the other items use the same data as PAL...

Страница 23: ...VCHIP ENABLE 1 Enable 0 Disable Description 1 Set the shopping status When trigger the SHOP INIT item form 0 to 1 the TV will be put on selling status The TV status after shopping status A FACTORY HOT...

Страница 24: ...emark 0 EHT tracking only on vertical Track Mode 0 EHT tracking mode 1 EHT tracking on vertical and EW VX Normal 25 4 3 mode vertical zoom Don t adjust use default VX Compr 0 16 9 mode vertical zoom D...

Страница 25: ...ency Select the IF frequency AGCS 1 AGC speed Don t adjust use default AGNE 3 Audio gain Don t adjust use default WATCHDOG 8 Don t adjust use default BLUE BLACK OPT 0 No signal background color set 0...

Страница 26: ...ring active 0 and 100IRE Don t adjust use default 5 Enter P Mode press key 8 to select page 8 Set the corresponding item to require value See below table 3 6 5 for detailed description Table 3 6 5 Pro...

Страница 27: ...erial No Issued on 2008 05 19 Page Page 15 of 15 Updated on 2010 01 27 Version 2 2 KEY DETECT 1 PRESS KEY fault detect 1 detect 0 N0 detect Recommended value 1 BLACK LIGHT 0 Software eliminate bright...

Страница 28: ...nd signal amplifying The amplified high frequency signal accompany with the high frequency oscillation voltage oscillated by set oscillator input to the mixer The IF picture signal and sound signal fo...

Страница 29: ...processing get the color video broadcast signal and 2nd sound IF signal Video signal processing section is CVBS across video filter and delay line and horizontal vertical synchronous separation circu...

Страница 30: ...ng in switch on and off situation get good linearly and enough amplitude of saw tooth wave current to drive horizontal deflection yoke scanning L456 is horizontal width coil and L458 is horizontal lin...

Страница 31: ...r transformer Pin 6 is boost voltage rectified by D301 C309 C301 and R305 makes up a voltage feedback network R306 is a damping resistor C306 is correction capacitor R308 is current feedback resistor...

Страница 32: ...LF801A and CX802 makes up a differential mode rejection LF802 and CY801 CY802 makes up a common mode rejection network D801 D804 is rectifying network 300Vdc voltage supply pin3 of T801 also through...

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Страница 40: ...ot contain an East West and Scan Velocity Modulation SVM output This concept is intended for 90 picture tubes Mono 110 concept The functional content of this concept is comparable with that of the AV...

Страница 41: ...pplication it is necessary that an external bandpass filter is inserted Audio switch circuit with 2 stereo inputs 1 stereo input can also be switched into two mono sound inputs and a stereo output whi...

Страница 42: ...tion with two control loops and alignment free horizontal oscillator Vertical count down circuit Vertical driver optimized for DC coupled vertical output stages Horizontal and vertical geometry proces...

Страница 43: ...ing 8 bit A D converter with 4 multiplexed inputs 4 PWM 6 bits outputs for analogue control functions 2 3 Data Capture Teletext and Closed Caption devices Text memory for 1 page Inventory of transmitt...

Страница 44: ...f coloration Programmable Cursor Special Graphics Characters with two planes allowing four colors per character 2 4 2 Features of the Teletext and Closed Caption devices Four character sets Up to 576...

Страница 45: ...IPAudio supply current 8 0 V AV 110 90 and mono 110 version 10 mA Ptot total power dissipation 1 1 W Input voltages ViVIFrms video IF amplifier sensitivity RMS value 75 150 PV ViSSIF rms sound IF amp...

Страница 46: ...L GEOMETRY EAST WEST AGCOUT VIFIN C2 C3 C4 CVBS4 Y4 H OUT PEAKING SCAN VELOCITY RGB YP R P B CON BRI RO GO BO BLKIN RGB CONTROL OSD TEXT INSERT WHITE P ADJ CONTR BRIGHTN RGB MATRIX H V REF Y DELAY ADJ...

Страница 47: ...UT VIFIN H OUT RGB YP R P B CON BRI RO GO BO BLKIN VGUARD RGB CONTROL OSD TEXT INSERT CCC BLACK ADJ WHITE P ADJ CONTR BRIGHTN RGB MATRIX H V REF Y DELAY ADJ SATURATION CVBS2 Y2 YSYNC IFVO SVO SOUND PL...

Страница 48: ...output AVL capacitor AVL 16 16 AVL capacitor DECBG 17 17 17 bandgap decoupling SECPLL 18 18 18 SECAM PLL decoupling GND1 19 19 19 ground 1 for TV processor PH1LF 20 20 20 phase 1 filter PH2LF 21 21 2...

Страница 49: ...GO 45 Green output RO PROUT 46 46 Red output PR output RO 46 Red output BLKIN VGUARD SVM 1 6 47 black current input vertical guard scan velocity modulation output BLKIN VGUARD 1 6 47 47 black current...

Страница 50: ...onitor applications This device supplied with up to 35 V provides up to 2 5 App output current to drive the vertical deflection yoke The internal flyback generator delivers flyback voltages up to 75 V...

Страница 51: ...e of either VS 2 or 40 volts 2 Thermal Data Symbol Parameter Value Unit Voltage VS Supply Voltage pin 2 Note 1 and Note 2 40 V V5 V6 Flyback Peak Voltage Note 2 70 V V3 Voltage at Pin 3 Note 2 Note 3...

Страница 52: ...put I1 Input Bias Current V1 1 V V7 2 2 V 0 6 1 5 A 1 I7 Input Bias Current V1 2 2 V V7 1 V 0 6 1 5 A VIR Operating Input Voltage Range 0 VS 2 V VI0 Offset Voltage 2 mV DVI0 dt Offset Drift versus Tem...

Страница 53: ...2 and I6 Figure 2 Measurement of V5H Figure 3 Measurement of V3L and V5L 1V a 39kW 5 1 b I1 a I2 and I6 measurement b I1 measurement S Vs 2 6 I2 I6 4 7 2 2V STV8172A 5 6kW I5 5 1V 7 2 2V 1 4 Vs 2 6 V5...

Страница 54: ...OFF the positive supply alone In this state where both inputs are the same voltage as pin 2 or higher the output will sink negligible current from the deviation coil 4 1 1 Application Hints For calcul...

Страница 55: ...tion of any ripple caused by a voltage drop in the ground see Figure 5 if you manage to apply the same fraction of ripple voltage to both booster inputs For that purpose arrange an intermediate point...

Страница 56: ...of the yoke 4 2 1 Application Hints Gain is defined as in the previous case Choose R1 then either R2 or R3 For good output centering V7 must fulfill the following equation or Figure 6 AC coupled Appl...

Страница 57: ...is the common mode current at peak of signal i icm ip and i icm ip therefore the peak differential signal is ip ip 2 ip and the peak peak differential signal 4ip The application is described in Figure...

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Страница 61: ...ce Q801 Is D801 D804 OK Yes Check IC801 and the peripheral components Replace D809 D812 No No Figure 1 Fuse Blown No raster abnormal B Is the B resistance to earth ok Check the load of B No Yes Check...

Страница 62: ...upply of IC601 Yes Is the waveform at P57 P58 of IC201 ok Yes Replace IC601 Check Replace Q602 Q600 No Figure 4 No Sound No raster B Voltage OK Is the voltage of Pin8 IC202 5v Is the resistance to ear...

Страница 63: ...to IC201 form AV input No Check IC201 Check AV Signal input Yes AV has Picture TV hasn t Picture Check tuner TU100 Check tuner working is ok Figure 6 No Picture Is both 14V and 14V ok Yes No Is the si...

Страница 64: ...1K 18 CD0471 JNX RES C F 470 OHM 1 4W 5 R516 T8 0NX56B CR1K 18 CE0224 JNX RES C F 220K OHM 1 2W 5 R506 T8 0NX56B CR1K 18 FE0272 JNX RESISTOR METAL OXIDE FILM 2K7OHM 5 1 2W R539 T8 0NX56B CR1K 18 FE027...

Страница 65: ...K 18 CB0271 JNX RES C F 270 OHM 1 6W 5 J816 T8 21RFLE MHF5AK 36 WID801 XX1 TCL36 WID801 XX1 COIL WIDTH 800 UH R N L451 T8 21RFLE MHF5AK 27 AHQ153 JSX CAP M PP 0 015UF 400V 5 C454 T8 21RFLE MHF5AK 27 A...

Страница 66: ...AK BS1 T8 21K9AK BS1Z ASS Y BASE OF ARTASYASY T8 21K9AK BS1Z 62 460850 0CL TV RAW STAND 21K9S NX56 01 00 00 R N 03 21K8SAK BO12X T8 21K8SAK MA5SM ASS Y CHASSIS BDKIT T8 21K8SAK MA5SM T8 21K8SAK MA5HM...

Страница 67: ...T8 21LAAK MA2 18 CB0102 JNX RES C F 1K OHM 1 6W 5 R228 T8 21LAAK MA2 18 CB0102 JNX RES C F 1K OHM 1 6W 5 R242 T8 21LAAK MA2 18 CB0102 JNX RES C F 1K OHM 1 6W 5 R271 T8 21LAAK MA2 18 CB0102 JNX RES C F...

Страница 68: ...JNX RES C F 56K OHM 1 6W 5 R607 T8 21LAAK MA2 18 CB0680 JNX RES C F 68 OHM 1 6W 5 R203 T8 21LAAK MA2 18 CB0681 JNX RES C F 680 OHM 1 6W 5 R207 T8 21LAAK MA2 18 CB0820 JNX RES C F 82 OHM 1 6W 5 R901 T8...

Страница 69: ...10NF 50V 80 20 C108 T8 21LAAK MA2 26 EBP104 ZFS CAP CER 0 1UF 50V 80 20 C244 T8 21LAAK MA2 26 EBP104 ZFS CAP CER 0 1UF 50V 80 20 C242 T8 21LAAK MA2 26 EBP104 ZFS CAP CER 0 1UF 50V 80 20 C241 T8 21LAA...

Страница 70: ...41 WJ0075 B00 WIREBAREJUMPER7 5MM D207 T8 21LAAK MA2 41 WJ0075 B00 WIREBAREJUMPER7 5MM D206 T8 21LAAK MA2 41 WJ0075 B00 WIREBAREJUMPER7 5MM D205 T8 21LAAK MA2 41 WJ0075 B00 WIREBAREJUMPER7 5MM J229 T...

Страница 71: ...WJ0100 B00 WIREBAREJUMPER10MM J246 T8 21LAAK MA2 41 WJ0100 B00 WIREBAREJUMPER10MM J607 T8 21LAAK MA2 41 WJ0100 B00 WIREBAREJUMPER10MM J205 T8 21LAAK MA2 41 WJ0100 B00 WIREBAREJUMPER10MM J206 T8 21LAA...

Страница 72: ...0B0 HOLLOW RIVET 2 3MMX4 0MMX3 5MM FOR P401 T8 21LAAK MA2 67 H27292 2A0 HEAT SINK Y451 T8 21LAAK MA2 67 H30752 GA0 RAW HEATSINK GA0 00 R N Y402 T8 21LAAK MA2 67 H82981 6A0 RAW HEATSINK 05 00 R N Y601...

Страница 73: ...805 T8 21LAAK PW2 18 CB0153 JNX RES C F 15K OHM 1 6W 5 R810 T8 21LAAK PW2 18 CB0183 JNX RES C F 18K OHM 1 6W 5 R831 T8 21LAAK PW2 18 CB0222 JNX RES C F 2 2K OHM 1 6W 5 R820 T8 21LAAK PW2 18 CB0331 JNX...

Страница 74: ...TCL41 WJ0050 B00 WIRE BARE JUMPER 5MM R J836 T8 21LAAK PW2 41 WJ0050 B00 TCL41 WJ0050 B00 WIRE BARE JUMPER 5MM R J835 T8 21LAAK PW2 41 WJ0050 B00 TCL41 WJ0050 B00 WIRE BARE JUMPER 5MM R J834 T8 21LAA...

Страница 75: ...250V CT7 Y1 250V 10C E 22 CY803 T8 21LAAK PW2 13 AZ431A ZAT IC AZ431AZ ATRE1 IC802 T8 21K8SAK MA5HM T8 NX56LA AV2 ASS Y AV PARTSKIT T8 NX56LA AV2 47 RCA254 XX0G SOCKET RCA 1 RD BU GN RD WH YW R P901...

Страница 76: ...T8 21K8SAK OT5 66 343740 0B0 HOLLOW RIVET 2 3MMX4 0MMX3 5MM FOR CN803 T8 21K8SAK OT5 48 TAC001 XX0 TACT SWITCH K007 T8 21K8SAK OT5 70 271510 00A SERVICE CARD FOR PRODUCTION USE T8 21K8SAK OT5 90 0DSTG...

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