Qls 21M62US (CHASSIS: NX56-LA) Service Manual Download Page 1

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SERVICE MANUAL

MODEL: 21M62US

CHASSIS: NX56-LA

Summary of Contents for 21M62US (CHASSIS: NX56-LA)

Page 1: ...SERVICE MANUAL MODEL 21M62US CHASSIS NX56 LA...

Page 2: ...e 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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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Page 36: ...R104 D401 FR104 R423 1K R429 100R HEATER R410 270K B C E Q301 SC1815 B E C Q403 SA1015 8 4 10 1 2 7 6 5 11 9 T401 D455 BY228 B C E Q402A DD5023 NC R465 1R R320 3R3 3R3 R319 R318 3R3 R317 3R3 1 C 1 2 3...

Page 37: ...809A 0 01U 1000P C811A C807 560P 2 3 4 1 RL871 D805 FR104 D802 1N4007 D807 1N4148 C878 0 1U C877 470U 16V D875 1N4148 D876 1N4148 B C E Q873 SC1815 R876 4K7 R877 27K JP808 7 5MM C812 47U 25V C814 1000...

Page 38: ...5 0 01U 1 2 4 3 K007 STANDBY 1 2 4 3 K006 TV AV 1 2 4 3 K005 MENU 1 2 4 3 K004 VOL 1 2 4 3 K003 VOL 1 2 4 3 K002 CH 1 2 4 3 K001 CH R012 2K2 R008 330R R007 270R R211 2K7 L203 10UH 1 4 2 3 6 5 P904 1 2...

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Page 41: ...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...

Page 42: ...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...

Page 43: ...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...

Page 44: ...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...

Page 45: ...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...

Page 46: ...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...

Page 47: ...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...

Page 48: ...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...

Page 49: ...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...

Page 50: ...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...

Page 51: ...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...

Page 52: ...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...

Page 53: ...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...

Page 54: ...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...

Page 55: ...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...

Page 56: ...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...

Page 57: ...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...

Page 58: ...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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Page 62: ...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...

Page 63: ...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...

Page 64: ...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...

Page 65: ...MLGDAE1 18 FG0229 JSX RMOF 2 2OHM 5 2W R Y R317 T8 21RFLS MLGDAE1 18 FG0229 JSX RMOF 2 2OHM 5 2W R Y R318 T8 21RFLS MLGDAE1 18 FG0229 JSX RMOF 2 2OHM 5 2W R Y R319 T8 21RFLS MLGDAE1 18 FG0229 JSX RMOF...

Page 66: ...R_SPK T8 21M62AE FC9 46 CT035T 03HG HS 3PIN Y0606129 3 S602 TO L_SPK T8 21M62AE FC9 54 113970 0U0 TV RAW INSULATOR SLEEVE AWG 5 00 00 R FOR SPK HOUSING T8 21M62AE FC9 54 114000 00X TV RAW FELT PAPER 1...

Page 67: ...0 N21M62 IRA1XG TV PCB IR BD R Y T8 DM627AE IR1 46 CD050T 04K01G WIRE 500MM 04 TJC3 SCN 2 5MM UL 246 S011 T8 DM62SAE MA4SM T8 DM627AE KE2 ASS Y KEY BDEQU T8 DM627AE KE2 18 CB0471 JNX RES C F 470 OHM 1...

Page 68: ...1K OHM 1 6W 5 R228 T8 NX56AP MA4 18 CB0102 JNX RES C F 1K OHM 1 6W 5 R302 T8 NX56AP MA4 18 CB0102 JNX RES C F 1K OHM 1 6W 5 R614 T8 NX56AP MA4 18 CB0102 JNX RES C F 1K OHM 1 6W 5 R303 T8 NX56AP MA4 18...

Page 69: ...UF 16VV 5X11 85 C243 T8 NX56AP MA4 25 BCB101 M1X CAP ELE 5MM 100UF 16VV 5X11 85 C219 T8 NX56AP MA4 25 BCB101 M1X CAP ELE 5MM 100UF 16VV 5X11 85 C253 T8 NX56AP MA4 25 BCB101 M1X CAP ELE 5MM 100UF 16VV...

Page 70: ...FS CAP CER 22NF 50V 80 20 C206 T8 NX56AP MA4 27 MBC104 J0X CAP M P E 0 1 UF 63V 5 C214 T8 NX56AP MA4 27 MBC104 J0X CAP M P E 0 1 UF 63V 5 C204 T8 NX56AP MA4 27 MBC154 J0X CAP M P E 0 15UF 63V 5 C208 T...

Page 71: ...BAREJUMPER10MM J225 T8 NX56AP MA4 41 WJ0100 B00 WIREBAREJUMPER10MM J220 T8 NX56AP MA4 41 WJ0100 B00 WIREBAREJUMPER10MM J238 T8 NX56AP MA4 41 WJ0100 B00 WIREBAREJUMPER10MM J607 T8 NX56AP MA4 41 WJ0100...

Page 72: ...AP MA4 41 WJ0050 B00 TCL41 WJ0050 B00 WIRE BARE JUMPER 5MM R JP202 T8 NX56AP MA4 41 WJ0060 B00 WIRE BARE J202 T8 NX56AP MA4 18 EE0478 JNX RES FUS 0 47 OHM 1 2W 5 R408 T8 NX56AP MA4 18 EE0478 JNX RES F...

Page 73: ...T8 NX56AP MA4 41 WJ0185 B00 WIREBAREJUMPER18 5MM J213 T8 NX56AP MA4 41 WJ0100 B00 WIREBAREJUMPER10MM J226 T8 NX56AP MA4 41 WJ0055 B00 WIREBAREJUMPER5 5MM J232 T8 NX56AP MA4 41 WJ0075 B00 WIREBAREJUMP...

Page 74: ...TOCOUPLER PC123X9YF IC803 T8 NX56AP PW4 18 CB0102 JNX RES C F 1K OHM 1 6W 5 R852 T8 NX56AP PW4 18 CB0102 JNX RES C F 1K OHM 1 6W 5 R844 T8 NX56AP PW4 18 CB0103 JNX RES C F 10K OHM 1 6W 5 R808 T8 NX56A...

Page 75: ...ARE JUMPER 5MM R J806 T8 NX56AP PW4 41 WJ0050 B00 TCL41 WJ0050 B00 WIRE BARE JUMPER 5MM R J813 T8 NX56AP PW4 41 WJ0050 B00 TCL41 WJ0050 B00 WIRE BARE JUMPER 5MM R J819 T8 NX56AP PW4 41 WJ0050 B00 TCL4...

Page 76: ...P PW4 18 CB0821 JNX RES C F 820 OHM 1 6W 5 R818 T8 NX56AP PW4 18 FG0569 JSX RMOF 5 6OHM 5 2W R Y R846 T8 NX56AP PW4 18 CB0472 JNX CARBON RES C F 4 7K OHM 1 6W 5 R854 T8 NX56AP PW4 10 79C4V7 DBX D PR A...

Page 77: ...OT4 70 271510 00A SERVICE CARD FOR PRODUCTION USE T8 DM62SAE OT4 71 270870 0A9 LABEL T8 DM62SAE OT4 90 0DSTG1 SR1U HEAT SINK DSTG 1 T8 DM62SAE OT4 46 33079W 04XG PIN BASE 4 TJC3 4A P202 PIN1 PIN4 T8...

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