TCL 14F1 NX56C-LA, Service Manual

Page 1: ...Diagram 29 5 Scheme Diagram 35 6 PCB Layout 38 7 Specification of Main IC 40 8 Trouble Shooting 6 9 BOM List 64 10 Explode Diagram 7 This manual is the latest at the time of printing and does not incl...

Page 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...

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 Multimedia Technology Holding CRT BU R D Center Chassis Name Serial No Issued On Page Updated On 2009 4 24 Version 4 0 Product Functional Specification NX56 AP NX56B AP 2008 4 18 1 of 18...

Page 7: ...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 Arabic...

Page 8: ...d by XR 0XMLDQ Checked by XR XDQJ XDQ Released by KRX 6RQJPLQJ Prepared by XR 0XMLDQ Checked by XR XDQJ XDQ Released by KRX 6RQJPLQJ Revised by Guo Huan Qiu Checked by Released by KRX 6RQJPLQJ Revised...

Page 9: ...CAM BG DK I PAL SECAM BG DK I PAL SECAM BG DK I PAL SECAM BG DK I AV Systems NTSC PAL NTSC PAL SECAM NTSC PAL SECAM NTSC PAL SECAM NTSC PAL SECAM NTSC PAL SECAM Picture Processing SCAN Standard Standa...

Page 10: ...5W 5W 5W 5W Surround Sound Nicam America Stereo MTS BTSC MPS America SAP Korea Stereo Thai Bilingual X X Super Woofer AVL Sound Control General Volume X X X X X X Mute X X X X X X Sound Control Specia...

Page 11: ...X Rotation Sleep X X X X X X AVC Features Special V chip CCD Teletext Pages Others New Features Smart signal X Voltage display Light Sensing Easy search X Tuning Features Auto Channel Program X X X X...

Page 12: ...with Y C SCART Single CVBS SCART Single CVBS Y C X X Component In YPbPr Cinch for 50Hz In Y C Cinch CVBS Stereo X X In Y C Cinch CVBS Mono In Cinch CVBS Stereo X X In Cinch CVBS Mono Out Cinch CVBS St...

Page 13: ...Doc Warning Label Approbation Label Others Languages DFU Indication on BACKOVER Made in in family sheet FCC Elect Shock Caution Label CE Elect Shock Caution Label Warning Label Others Approbation IEC6...

Page 14: ...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 15: ...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 16: ...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 17: ...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 18: ...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 19: ...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 20: ...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 21: ...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 22: ...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 23: ...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 24: ...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 25: ...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 26: ...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 27: ...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 28: ...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 29: ...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 30: ...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 31: ...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 32: ...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 33: ...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 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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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Page 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...

Page 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...

Page 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...

Page 64: ...8 5 1 7 3 79 5 32 2 0 85 5 1 7 3 79 5 32 2 0 5 1 7 3 79 5 32 2 0 5 5 1 7 3 7 3 66 3 1 57 6 7 3 3 79 16758 7 21 22 7 6 5 7 3 5 3 00 5 1 7 3 32 0 0 7 3 7 5721 2 7 3 219 57 5 2 0 25 176 7 3 7 7 2 52 17...

Page 65: ...267 5 7 6 0 7 3 7 7 6 0 1 5 6 2 0 5 7 6 0 1 5 6 2 0 5 7 6 0 1 5 6 2 0 5 7 6 0 1 5 6 2 0 5 7 6 0 1 5 6 2 0 5 7 6 0 1 5 6 2 0 5 7 6 0 1 5 6 2 0 5 7 6 0 1 5 6 2 0 5 7 6 0 1 5 6 2 0 5 7 6 0 1 5 6 2 0 5 7...

Page 66: ...5 7 6 0 1 5 6 2 0 5 7 6 0 1 5 21 5 6 2 0 5 7 6 0 1 5 21 5 6 2 0 5 7 6 0 1 5 21 5 6 2 0 5 7 6 0 1 5 21 5 6 2 0 5 7 6 0 1 5 21 5 6 2 0 5 7 6 0 1 5 6 2 0 5 7 6 0 1 5 6 2 0 5 7 6 0 1 5 6 2 0 5 7 6 0 1 5 6...

Page 67: ...5 1 9 7 6 0 3 6 3 5 1 9 7 6 0 3 6 3 5 8 9 7 6 0 3 6 3 5 8 9 7 6 0 3 6 3 5 8 9 7 6 0 3 6 3 5 8 9 7 6 0 3 6 3 5 8 9 7 6 0 3 6 3 5 8 9 7 6 0 3 6 3 5 8 9 7 6 0 3 6 3 5 8 9 7 6 0 3 6 3 5 8 9 7 6 0 3 6 3 5...

Page 68: ...1 5 7 6 0 5 1 5 7 6 0 5 1 5 7 6 0 5 1 5 7 6 0 5 1 7 6 0 5 5 803 5 00 7 6 0 5 5 803 5 00 7 6 0 5 5 803 5 00 7 6 0 5 5 803 5 00 7 6 0 5 5 803 5 00 7 6 0 5 5 803 5 00 7 6 0 5 5 803 5 00 7 6 0 5 5 803 5 0...

Page 69: ...5 00 7 6 0 5 5 803 5 00 5 7 6 0 5 5 803 5 00 7 6 0 5 5 803 5 00 7 6 0 5 5 803 5 00 7 6 0 5 5 803 5 00 7 6 0 5 5 803 5 00 7 6 0 5 5 803 5 00 7 6 0 5 5 803 5 00 7 6 0 5 5 803 5 00 7 6 0 5 5 803 5 00 7...

Page 70: ...35 B9 9 9 7 6 3 9 2 1 5 9 7 6 3 9 35 B9 9 9 7 6 3 9 1 5 9 9 0 5 1 7 6 3 7 75 16 6725 7 4 7 6 3 7 75 16 6725 7 4 7 6 3 7 75 16 6725 7 4 7 6 3 6 1 026 7 1 9 72 6 1 4 7 6 3 6 75 99 0 B 131 0 72 6 4 7 6...

Page 71: ...7 6 3 0 3 5 S 9 7 6 3 00 5 3 5 3 9 7 6 3 3 6 3 5 3 9 7 6 3 3 6 3 5 3 9 7 6 3 44 9 3 0 33 8 9 7 6 3 3 3 3 8 9 7 6 3 3 3 3 8 9 7 6 3 55 7 6 3 7 1 7 5 5 7 7 6 3 7 5 5 803 5 00 5 7 6 3 5 5 803 5 00 7 6 3...

Page 72: ...3 3 6 3 5 1 9 7 6 3 3 6 3 5 1 9 7 6 3 58 0 3 3 1 9 B 9 2 7 7 6 3 5 5 803 5 00 3 7 6 3 5 5 803 5 00 7 6 3 3 0 3 5 3 9 7 9 7 6 3 75 7 75 16 250 5 75 16 250 5 7 7 6 3 1 5 6 2 0 5 7 6 3 3 6 3 5 1 9 7 6 3...

Page 73: ...57 6 7 2 1 5 6 3 5 7 25 7 2 1 5 7 2 1 0 5 66 0 7 78 0 1 6 6 7 2 1 0 5 1 5 6 2 0 5 7 2 1 0 5 1 5 6 2 0 5 7 2 1 0 5 1 7 1 5 6 2 0 5 7 2 1 0 5 6 502 5 7 2 1 0 5 3 5 3 9 6 7 2 1 0 5 5 6 3 0 33 8 9 7 2 1 0...

Page 74: ...9 7 1 5 3 6 3 5 3 9 7 1 5 5 1 7 1 5 5 1 7 1 5 5 1 7 1 5 5 5 803 5 00 7 1 5 5 5 803 5 00 7 1 5 60 3 1 6 7 3 7 1 5 3 1 6 7 3 7 1 5 3 1 6 7 3 7 1 5 57 62 7 57 6 1 5 6 6 7 1 5 2 2 8 00 7 1 5 6 502 2 0 5...

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