AOC TCL LCD27VN Service Manual Download Page 19 | Manualshive

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AOC TCL LCD27VN Service Manual Download Page 19

27

’’ LCD TV Color Monitor TCL LCD27VN

19

Main Board Power Circuit

No Power

Check CN606
Pin 3, 4(12V),
Pin 5, 6 (5V)

Check Power Board circuit

Check U701 input (5V),
U706 input (12V)

Check Q701, Q702 and
PWR_ON control relative
circuit

U704 Pin2

(8V)

U700 Pin2

(1.8V)

U705 Pin2

(2.5V)

U701/U702/U703/U
704 Pin2 (2.5V)

OK

OK

OK

NG

NG

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Summary of Contents for TCL LCD27VN

Page 1: ...2 8 Block Diagram 33 8 1 Main Board 33 8 2 Power Board 34 9 Schematic Diagram 35 9 1 Main Board 35 9 2 Power Board 46 10 Exploded View 48 11 BOM List 49 12 Different Parts List 74 Table Of Contents 1...

Page 2: ...27 LCD TV Color Monitor TCL LCD27VN 2 Revision List Version Release Date Revision Instructions TPV Model A00 Oct 25 2006 Initial Release EF84MGNKB2TLTMP EF84MGNKB2TL2M...

Page 3: ...eo x 1 Component YCbCr x 1 Audio channel L R x 1 HDTV YPbPr x 1 Audio channel L R x 1 PC Input Signal Input Analog D Sub 15 pin detachable cable PnP compatibility DDC2B Input frequency Analog FH 31 5...

Page 4: ...button to Display Channel number on the right top corner MTS Press this key to activate Multichannel Television Sound Stereo or Mono sound PRE CH To display the previously selected TV channel TV VIDE...

Page 5: ...Key Press to turn on or off the TV MENU Key Press to show the OSD menu and exit OSD menu at the TV Down Up Key Press to perform select function and channel Left Right Key Press to confirm your functi...

Page 6: ...TURE PARAMETERS PC PARAMETERS AUDIO SETTINGS PICTURE IN PICTURE CHANNEL SETTINGS PARENTAL CONTROLS and GENERAL SETTINGS PICTURE PARAMETERS BRIGHTNESS Adjust the brightness of the image CONTRAST Adjust...

Page 7: ...CLOCK Adjust the time PHASE Adjust the phase of the graphic POSITION Adjust the position and angle of the graphic AUDIO SETTINGS BASS Adjust bass tone TREBLE Adjust treble tone SRS Switch SRS surround...

Page 8: ...wishes If there is no menu use the buttons on the remote control to change the PIP position PIP SIZE Can be used to switch the PIP off OFF or select the size SMALL MEDIUM LARGE of the PIP Can also be...

Page 9: ...o initiate the functionality list as shown on the left CC CONTROL Switch the subtitles function ON or OFF MODE Select mode of subtitles DISPLAY Select display of subtitles GENERAL SETTINGS OSD POSITIO...

Page 10: ...ensure firm grounding The connector information is as follow 1 6 11 15 5 10 15 Pin Color Display Signal Cable Pin No Description Pin No Description 1 Red Video 9 5V 2 Green Video 10 Sync Ground 3 Blue...

Page 11: ...ontal Vertical Resolution Nominal Frequency KHz Sync Polarity Nominal Freq Hz Sync Polarity 720x400 31 5 N 70 1 P 640x480 31 5 N 59 9 N 640x480 37 9 N 72 8 N 640x480 37 5 N 75 N 800x600 37 9 P 60 3 P...

Page 12: ...or TCL LCD27VN 12 4 Mechanical Instructions Step Figure Description Preparation Lay the LCD TV on a flat soft and clean surface Remove hinge cover Remove the hinge cover as the arrowheads Remove base...

Page 13: ...27 LCD TV Color Monitor TCL LCD27VN 13 Remove cover cable Push the clip as the arrowheads Remove back cover Remove the six screws Remove cover chin Remove the six screws...

Page 14: ...27 LCD TV Color Monitor TCL LCD27VN 14 Remove shield Remove the total six screws Remove main board Remove the four scres and disconnect he wire harnesses...

Page 15: ...tor TCL LCD27VN 15 Remove power board Remove the six screws and disconnect the wire harness Remove main frame Remove the fourteen screws Remove speakers and bezel Remove the sixteen screws the left an...

Page 16: ...27 LCD TV Color Monitor TCL LCD27VN 16 Remove panel Remove the four screws...

Page 17: ...27 LCD TV Color Monitor TCL LCD27VN 17 Remove the four screws The end...

Page 18: ...l or FPC cable to panel Replace Q401 Q400 Check U403 crystal X400 14 318MHZ Replace X400 Check power supply for 1 8V 2 5V and 3 3V Check relative circuit Replace U403 OK OK OK OK NO 5V NO Signal NG NG...

Page 19: ...Circuit No Power Check CN606 Pin 3 4 12V Pin 5 6 5V Check Power Board circuit Check U701 input 5V U706 input 12V Check Q701 Q702 and PWR_ON control relative circuit U704 Pin2 8V U700 Pin2 1 8V U705 P...

Page 20: ...eyboard and main board or U403 Check U403 and relative circuit Replace keyboard NG NG OK Remote Control can t work Check IR Board J1 Pin 1 4 5V and voltage at Pin 3 will change when received signal Re...

Page 21: ...ive circuit and panel control circuit Check U403 crystal X400 14 318MHZ Check CN605 FPC cable and panel Replace X400 Check power supply for 1 8V 2 5V and 3 3V Check relative circuit Check CN300 Pin1 2...

Page 22: ...eck U603 U604 output relative circuit and power supply 24V Check CN602 Pin3 4 and Pin1 2 are short when no ear phone plug Check earphone board Check U200 U105 output relative circuit Check TUNER Pin11...

Page 23: ...nt CO BR Contrast and Brightness adjust RG GG BG R G B Gain adjusts RB GB BB R G B Bias adjusts S9 S6 ST SH Save 9300 6500 9300 color temperature R9 R6 RT RH Recall 9300 6500 9300 color temperature BI...

Page 24: ...olor 9300 on OSD window to save the adjustment result D Adjust 11000 color temperatures 1 Set the Contrast of OSD function to 45 and Adjust Brightness to chroma 7120 Y 440 cd m2 2 Switch the chroma 71...

Page 25: ...27 LCD TV Color Monitor TCL LCD27VN 25 7 PCB Layout 7 1 Main Board...

Page 26: ...27 LCD TV Color Monitor TCL LCD27VN 26...

Page 27: ...27 LCD TV Color Monitor TCL LCD27VN 27...

Page 28: ...27 LCD TV Color Monitor TCL LCD27VN 28...

Page 29: ...27 LCD TV Color Monitor TCL LCD27VN 29 7 2 Power Board...

Page 30: ...27 LCD TV Color Monitor TCL LCD27VN 30...

Page 31: ...27 LCD TV Color Monitor TCL LCD27VN 31 7 3 Key IR Board...

Page 32: ...27 LCD TV Color Monitor TCL LCD27VN 32 7 4 Earphone Board...

Page 33: ...3425G AUDIO Decoder 74HC4052D 74HC4052D TV audio SIF YCrCb Audio YPrPb Audio Audio 1 Audio 2 PC Audio NOTE AV2 and S VIDCO USE the same Audio Input Speaker 5W x 2 Power Genesis 1501 Scalar OSD ADC LVD...

Page 34: ...27 LCD TV Color Monitor TCL LCD27VN 34 8 2 Power Board...

Page 35: ...0 0015uF SRSIN_L 5 C184 2 2uF 16V C10C 0 1uF L111 600 OHM C155 0 1uF R178 100 1 16W C170 47pF C156 100uF 16V R144 22 2W R172 33 1 16W SOURCE_L2 11 C183 2 2uF 16V U105 MSP3425G 1 2 3 4 5 6 7 8 9 10 11...

Page 36: ...8 1 13 1 2 3 4 6 U102 AIC1117 33CY 3 2 1 VI VO GND L 1 01 6 0 0 OHM D25 R1 27 1 0 K 1 1 6 W C1 14 0 1 u F A12V To 3230D L 1 00 5 6 u H C1 34 4 7 uF 1 6 V R1 41 2 2 0 1 1 6 W D33 C1 50 0 1 u F R1 39 1...

Page 37: ...53 35 34 52 63 58 36 32 31 8 9 10 12 14 17 19 21 25 37 39 40 41 42 44 45 46 47 48 49 50 57 56 55 54 62 61 60 59 67 66 65 64 68 72 71 70 69 73 74 75 76 77 79 78 80 B 1 Cb1I N G1 Y 1I N R1 Cr1 IN B 2 C...

Page 38: ...06 47K 1 16W U201 Z86129 10 11 12 13 14 15 16 17 18 1 2 3 4 5 6 7 8 9 RREF VSS_A V DD VIN INTRO SDA SCK SDO BOX RED VSS GREEN BLUE SEN HIN SMS VIDEO CSYNC LPF R215 470 1 16W SRS R207 31 6K 1 16W FB 4...

Page 39: ...10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 7...

Page 40: ...10uF 16V C315 10uF 16V R312 75 1 16W GREEN R305 75 1 16W D304 BAV99 1 2 3 C307 NC 5VD_AVIE GREEN 8 C310 47pF VGA_RIN L302 0 1 16W VGA_VIN ZD300 MLL752A R310 150 1 16W R301 4 7K 1 16W SCALER_AVS 8 VGA_...

Page 41: ...ACS_ RSET _ HD GPIO_G0 6 _ B0 GPIO_G0 6 _ B1 GPIO_G0 6 _ B2 GPIO_G0 6 _ B3 A3 A3 AC AC GPIO_G0 5 _ B0 A2 A2 GPIO_G0 5 _ B3 A1 A1 A0 A0 GPIO_G0 4 _ B0 GPIO_G0 4 _ B1 GPIO_G0 4 _ B2 GPIO_G0 4 _ B3 GPIO_...

Page 42: ...14 0 1uF FSDATA 0 31 8 19 LOW 2 5V_DDR OCMADDR4 FSADDR10 FSCLK 2 5V_DDR1 R405 10K 1 16W C521 0 1uF OCMADDR15 OCMADDR14 Serial_Interface_Debug2 3 3V_DIG1 OCM_RE C404 0 1uF BOOTSTRAP HEADER OPEN 1 SHUNT...

Page 43: ...678 68pF Comp_L 11 ACK 8 DAT 8 CN600 CONN 1 2 3 4 5 6 7 8 9 10 C673 470pF DVD_R L638 120 OHM C669 470pF Rin1 8 C657 68pF VGA_SDA 7 8 L643 120 OHM L609 600 OHM Audio_R 11 V G A_S CL L627 150 OHM C664 4...

Page 44: ...10 R617 3 9K 1 16W AUDIO_SL1 1 24V AV1R C695 0 0056uF X R619 100K 1 16W AUDIO_SL2 C632 100uF 16V R623 1K 1 16W L637 600 OHM 5VA 5VD SOURCE_R2 2 R606 100K 1 16W C620 470pF R625 100K 1 16W X D602 SMB34...

Page 45: ...For A to D AD9883 C711 10uF 16V C727 47uF 16V 3 3VA L700 600 OHM L706 600 OHM C700 0 001uF L712 600 OHM 3 3V_ADC 3 3V_PLL 3 3V_DVI For GM1601 Q701 AO4403 1 2 3 4 8 7 6 5 S1 S1 S1 G1 D1 D1 D1 D1 L711 6...

Page 46: ...Q94 3 IRF B3 41 5 R91 8 N C R96 0 1 3K 1 1 0W C92 5 5 0V_4 7 uF C95 5 4 70 uF 3 5 V C93 6 0 0 1u F 50 V R91 0 1 0K 1 1 0W P1 1 Q94 6 2 SA73 3 P C91 1 0 0 01 uF Z D9 02 RLZ 20 B C91 2 0 4 7u F 25 V C9...

Page 47: ...ATE L801 22uH C806 470uF 10V C803 1000PF C810 1000PF R804 22 1 4W R801 36K 1 16W D801 SSM54 Q801 AO4411 1 2 3 4 8 7 6 5 S1 S1 S1 G1 D1 D1 D1 D1 C805 470P R802 62K 1 16W C801 220uF 25V C807 470uF 10V 5...

Page 48: ...27 LCD TV Color Monitor TCL LCD27VN 48 10 Exploded View...

Page 49: ...45T 88609 9 DE BAG 045T 88609 15 EPE COVER FOR BASE 045T 88626 5 PE BAG FOR MOUITOR 050T 500 1 CABLE TIE 052T 1185 43 TCL TV TAPE 052T 1185 44 TCL TV TAPE 052T 1186 SMALL TAPE 052T 1211 A ADHESIVE TYP...

Page 50: ...M1T 330 8128 CR3 SCREW 0Q1T 130 8120 SCREW 0Q1T 140 20120 SCREW 0Q1T 330 8120 SCREW 3X8mm 0Q1T 330 8120 SCREW 3X8mm 0Q1T 330 8120 SCREW 3X8mm 0Q1T1030 8128 CR3 SCREW 0Q1T1030 10128 CR3 SCREW 0Q1T1030...

Page 51: ...000M L 5 25MM C950 067T215L102 6N KY35VB1000M L 5 25MM C951 067T215L102 6N KY35VB1000M L 5 25MM C951 067T215L102 6R LOW E S R 1000UF 20 35V C950 067T215L102 6R LOW E S R 1000UF 20 35V C949 067T215L102...

Page 52: ...605 033T801730A H PIN HEADER 30P 2 0MM 044T3231508512 CHIELD D SUB R706 061T152M100 64 10OHM 5 2W R705 061T152M100 64 10OHM 5 2W R146 061T152M220 64 22 OHM 5 2W R145 061T152M220 64 22 OHM 5 2W R144 06...

Page 53: ...WITCH TSPB 2 NP S601 077T 600 1GCJ TACT SWITCH TSPB 2 NP S600 077T 600 1GCJ TACT SWITCH TSPB 2 NP D601 081T 12 2 GP GP36032ME 50 ZO TP600 095T 900576 HARNESS SMTKEPFF91KA3P KEY BOARD FOR SMT 033F303H0...

Page 54: ...W R960 061T0805133 RST CHIPR 13 KOHM 5 1 8W R961 061T0805152 RST CHIPR 1 5 KOHM 5 1 8W R914 061T0805191 2F RST CHIPR 19 1 KOHM 1 1 8W R957 061T0805200 9F RST CHIPR 20 OHM 1 1 8W R958 061T0805202 RST C...

Page 55: ...50V X7R C914 065T0805104 32 CHIP 0 1U 50V X7R C910 065T0805104 32 CHIP 0 1U 50V X7R C953 065T0805104 32 CHIP 0 1U 50V X7R C956 065T0805104 32 CHIP 0 1U 50V X7R C965 065T0805104 32 CHIP 0 1U 50V X7R C...

Page 56: ...P1117E50LA ANACHIP U103 056T 585 5A ANACHIP U705 056T 585 5A ANACHIP U105 056T 593 4 MSP3425G QI B8 V3PMQFP64 BTSC U200 056T 593 6 M62438FP SOP 10 U600 056T 614 1 IC 74HC4052D PHILIPS U601 056T 614 1...

Page 57: ...3 OHM 5 1 16W PR417 061T 125330 8 RST CHIP AR 8P4R 33 OHM 5 1 16W PR415 061T 125330 8 RST CHIP AR 8P4R 33 OHM 5 1 16W PR414 061T 125330 8 RST CHIP AR 8P4R 33 OHM 5 1 16W PR413 061T 125330 8 RST CHIP A...

Page 58: ...61T0603101 CHIP 100OHM 1 16W R325 061T0603101 CHIP 100OHM 1 16W R327 061T0603101 CHIP 100OHM 1 16W R615 061T0603101 CHIP 100OHM 1 16W R621 061T0603101 CHIP 100OHM 1 16W R103 061T0603101 CHIP 100OHM 1...

Page 59: ...M 1 16W R404 061T0603103 CHIP 10KOHM 1 16W R405 061T0603103 CHIP 10KOHM 1 16W R407 061T0603103 CHIP 10KOHM 1 16W R410 061T0603103 CHIP 10KOHM 1 16W R411 061T0603103 CHIP 10KOHM 1 16W R626 061T0603104...

Page 60: ...ST CHIPR 3 3 KOHM 5 1 10W R149 061T0603333 RST CHIPR 33 KOHM 5 1 10W R129 061T0603361 RST CHIPR 360 OHM 5 1 10W R614 061T0603392 CHIP 3 9KOHM 1 16W R613 061T0603392 CHIP 3 9KOHM 1 16W R209 061T0603392...

Page 61: ...50 9F CHIP 75OHM 1 16W 1 R328 061T0603750 9F CHIP 75OHM 1 16W 1 R329 061T0603750 9F CHIP 75OHM 1 16W 1 R330 061T0603750 9F CHIP 75OHM 1 16W 1 R331 061T0603750 9F CHIP 75OHM 1 16W 1 R332 061T0603750 9F...

Page 62: ...UF K 16V X7R C468 065T0603104 12 MLCC 0603 0 1UF K 16V X7R C467 065T0603104 12 MLCC 0603 0 1UF K 16V X7R C466 065T0603104 12 MLCC 0603 0 1UF K 16V X7R C464 065T0603104 12 MLCC 0603 0 1UF K 16V X7R C46...

Page 63: ...0603 0 1UF K 16V X7R C455 065T0603104 12 MLCC 0603 0 1UF K 16V X7R C454 065T0603104 12 MLCC 0603 0 1UF K 16V X7R C451 065T0603104 12 MLCC 0603 0 1UF K 16V X7R C450 065T0603104 12 MLCC 0603 0 1UF K 16...

Page 64: ...32 CHIP 0 1UF 50V X7R C692 065T0603104 32 CHIP 0 1UF 50V X7R C704 065T0603104 32 CHIP 0 1UF 50V X7R C705 065T0603104 32 CHIP 0 1UF 50V X7R C707 065T0603104 32 CHIP 0 1UF 50V X7R C712 065T0603104 32 CH...

Page 65: ...CHIP 0 1UF 50V Y5V C138 065T0603104 37 CHIP 0 1UF 50V Y5V C136 065T0603104 37 CHIP 0 1UF 50V Y5V C133 065T0603104 37 CHIP 0 1UF 50V Y5V C132 065T0603104 37 CHIP 0 1UF 50V Y5V C131 065T0603104 37 CHIP...

Page 66: ...30 31 CHIP 33PF 50V NPO C476 065T0603330 31 CHIP 33PF 50V NPO C242 065T0603331 32 CHIP 330PF 50V X7R C243 065T0603331 32 CHIP 330PF 50V X7R C241 065T0603331 32 CHIP 330PF 50V X7R C188 065T0603331 32 C...

Page 67: ...P 560PF 50V NPO C695 065T0603562 32 CHIP 5600PF 50V X7R C696 065T0603562 32 CHIP 5600PF 50V X7R C668 065T0603680 31 CHIP 68PF 50V NPO C670 065T0603680 31 CHIP 68PF 50V NPO C667 065T0603680 31 CHIP 68P...

Page 68: ...16V 85C C227 067T 312479 6 SMD 4 7UF 20 35V C228 067T 312479 6 SMD 4 7UF 20 35V C693 067T 312479 6 SMD 4 7UF 20 35V C694 067T 312479 6 SMD 4 7UF 20 35V C702 067T 4121003XT EC 85 CHIP 10UF M 16V C701 0...

Page 69: ...21003XT EC 85 CHIP 10UF M 16V C210 067T 4121003XT EC 85 CHIP 10UF M 16V C195 067T 4121003XT EC 85 CHIP 10UF M 16V C336 067T 4121013XT EC 85 SMD CAP 100UF M 16V C625 067T 4121013XT EC 85 SMD CAP 100UF...

Page 70: ...1T 57G301 EA CHIP BEAD L700 071T 57G601 BEAD 1206 600 OHM L701 071T 57G601 BEAD 1206 600 OHM L702 071T 57G601 BEAD 1206 600 OHM L704 071T 57G601 BEAD 1206 600 OHM L705 071T 57G601 BEAD 1206 600 OHM L7...

Page 71: ...071T 59C121 B CHIP BEAD L652 071T 59C121 B CHIP BEAD L650 071T 59C121 B CHIP BEAD L646 071T 59C121 B CHIP BEAD L644 071T 59C121 B CHIP BEAD L643 071T 59C121 B CHIP BEAD L638 071T 59C121 B CHIP BEAD L...

Page 72: ...VET L906 006T 31502 1 5MM RIVET L904 006T 31502 1 5MM RIVET 715T1180 3 POWER BOARD PCB R938 061T 17247152T 470OHM 5 1 4W R966 061T 60110252T 1K OHM 2 1 6W R937 061T 60168152T 680 OHM 2 1 6W L921 071T...

Page 73: ...Q801 057T 763 3 AO4411L SO 8 BY AOS SMT Q801 057T 763 4 RSS050P03 R803 061T0603200 2F RST CHIPR 20 KOHM 1 1 10W R801 061T0603360 2F RST CHIPR 36 KOHM 1 1 10W R802 061T0603620 2F RST CHIPR 62 KOHM 1 1...

Page 74: ...No Description 002T6008 1 SCREW 040T 581654 3A CARTON LABEL 044T2701624 1A CARTON 705TQFK0M34005 SKD ASS Y 705LF84FB34008 BACK COVER ASS Y CBPF4G1KA1 CONVERSION BOARD EFPFF91A1 E PRAME BOARD IRPFF91A...

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