Norcent LT2722 Service Manual
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Norcent LT2722 Service Manual

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LCD TV MONITOR
THESE DOCUMENTS ARE FOR REPAIR SERVICE INFORMATION ONLY. EVERY REASONABLE EFFORT HAS
BEEN MADE TO ENSURE THE ACCURACY OF THIS MANUAL; WE CANNOT GUARANTEE THE ACCURACY
OF THIS INFORMATION AFTER THE DATE OF PUBLICATION AND DISCLAIMS RELIABILITY FOR CHANGES,
ERRORS OR OMISSIONS.

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Summary of Contents for Norcent LT2722

  • Page 1 Norcent LT2722 LCD TV MONITOR THESE DOCUMENTS ARE FOR REPAIR SERVICE INFORMATION ONLY. EVERY REASONABLE EFFORT HAS BEEN MADE TO ENSURE THE ACCURACY OF THIS MANUAL; WE CANNOT GUARANTEE THE ACCURACY OF THIS INFORMATION AFTER THE DATE OF PUBLICATION AND DISCLAIMS RELIABILITY FOR CHANGES,...

  • Page 2: Revision List

    Norcent LT2722 Revision List Version Release Date Revision History Model Name Jan.-09-2006 Initial Release EF84MGNKB2NCTMC...

  • Page 3: Table Of Contents

    Norcent LT2722 Table Of Contents Revision List .....…………....……..........…………......Table Of Contents .....................…………......1. General Specifications ................…………......2. Operating Instructions ..................……………..………….. 2.1 The Use Of Remote Control ..................…………… 2.2 Front Panel Control Knobs ..................…………… 2.3 OSD Operating ......................…………… 2.4 Safety Notice .......................…………...….

  • Page 4: General Specifications

    Norcent LT2722 1. General Specifications Specification Items Screen Size 27” TFT LCD color Panel (CMO) Aspect Ratio 16:9 Resolution 1280 x 720 (WXGA) Active Display Area H x V 597.12mm x 335.88mm Pixel Pitch 0.4665mm 0.4665mm Display colors 16.7 million...

  • Page 5: Operating Instructions

    Norcent LT2722 2. Operations Instructions 2.1 The Use Of Remote Control MUTE Temporarily interrupt POWER: the sound or restore it. Press to turn on/off the TV. The TV is never completely powered off unless it is physically unplugged. DISPLAY Press this button to...

  • Page 6: Front Panel Control Knobs

    Norcent LT2722 2.2 Front Panel Control Knobs Power 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.
  • Page 7 Norcent LT2722 PC PARAMETERS AUTO CONFIG: Enable the automatic configuration of the optimum size of the graphic. 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.
  • Page 8 Norcent LT2722 PICTURE-IN-PICTURE PIP POSITION: The PIP can be placed in any position on the screen according to one’s wishes. If there is no , ◄, ► buttons on the remote control to change the PIP position. menu, use the PIP SIZE: Can be used to switch the PIP off (OFF) or select the size (SMALL, MEDIUM, LARGE) of the PIP.
  • Page 9 Norcent LT2722 PARENTAL CONTROLS LOCK MENU: Switch the functionality to configure ratings on or off. MPAA RATING: Configure MPAA ratings. TV PG RATING: Configure TVPG ratings. PASSWORD: Change the password (default is ‘1111”). Please follow the instructions on the screen. Once changed, please remember your own password.
  • Page 10 Norcent LT2722 GENERAL SETTINGS OSD POSITION: Shift the position to one’s preference. OSD TIMEOUT: Configure the time to be displayed on screen. OSD LANGUAGE: Configure the language (English, French or Spanish) for the menu. OSD LOCK: Lock the selected configurations to prevent them from being overwritten.

  • Page 11: Safety Notice

    Norcent LT2722 2.4 Safety Notice For Your Safety Before operating the TV please read this manual thoroughly. This manual should be retained for future reference FCC Class B Radio Frequency Interference Statement WARNING: (FOR FCC CERTIFIED MODELS) NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules.
  • Page 12 Norcent LT2722 IMPORTANT SAFETY INSTRUCTIONS Read before operating equipment 1. Read these instructions. 2. Keep these instructions. 3. Heed all warnings. 4. Follow all instructions. 5. Do not use this apparatus near water. 6. Clean only with a dry cloth.
  • Page 13 Norcent LT2722 items could unsuspectingly fall from the top of the set and cause product damage and/or personal injury. Power Lines – An outdoor antenna should be located away from power lines. Outdoor Antenna Grounding – If an outside antenna is connected to the receiver, be sure the antenna system is grounded so as to provide some protection against voltage surges and built up static charges.

  • Page 14: Input Specification

    Norcent LT2722 3. Input Specification 3.1 Input Signal connector This procedure gives you instructions for installing and using the LCD TV display. Lay the display on the desired operation and plug the power cord into a convenient AC outlet. Three-wire power cord must be shielded and is provided as a safety precaution as it connects the chassis and cabinet to the electrical conduct ground.

  • Page 15: Factory Preset Display Modes

    Norcent LT2722 3.2 Factory Preset Display Modes: VGA MODES Horizontal Vertical Nominal Nominal Sync Sync Resolution Frequency Freq. Polarity Polarity (KHz) (Hz) 720x400 31.5 70.1 640x480 31.5 59.9 640x480 37.9 72.8 640x480 37.5 800x600 37.9 60.3 800x600 48.1 72.2 800x600 46.9...

  • Page 16: Mechanical Instructions

    Norcent LT2722 4. Mechanical Instructions Step Figure Description Lay the LCD-TV Preparation on a flat, soft and clean surface. Remove Remove the hinge hinge cover as the arrowheads. cover Remove Remove the six screws base...
  • Page 17 Norcent LT2722 Remove Push the clip as the arrowheads cover cable Remove Remove the six screws back cover Remove Remove the six screws cover chin...
  • Page 18 Norcent LT2722 Remove Remove the total shield six screws Remove the four Remove scres and disconnect he main board wire harnesses...
  • Page 19 Norcent LT2722 Remove the six Remove screws and power disconnect the board wire harness Remove Remove the fourteen screws main frame Remove the Remove sixteen speakers screws(the left and right two and bezel speakers)
  • Page 20 Norcent LT2722 Remove the four Remove screws panel...
  • Page 21 Norcent LT2722 Remove the four screws The end...

  • Page 22: Repair Flow Chart

    Norcent LT2722 5. Repair Flow Chart Panel Control Circuit No Display Check CN605 pin 19-22 Replace panel or is 5V and signal on pin FPC cable to panel 3,4,6,7,9,10,12,13,15,16 NO 5V NO Signal Check U403 crystal Check Q401, Q400 X400 (14.318MHZ)
  • Page 23 Norcent LT2722 Main Board Power Circuit No Power Check CN606 Pin 3, 4(12V), Check Power Board circuit Pin 5, 6 (5V) Check U701 input (5V), Check Q701, Q702 and U706 input (12V) PWR_ON control relative circuit U704 Pin2 U705 Pin2...
  • Page 24 Norcent LT2722 Remote Control Block Remote Control can’t work Check IR Board J1 Pin 1,4(5V) and voltage at Pin 3 will change Replace D600 or IR board when received signal Check Main board 5V power Replace line between Main relative circuit and signal on...
  • Page 25 Norcent LT2722 PC Control Block No Display Check U403 output Check CN605, FPC relative circuit and panel cable and panel control circuit Check U403 crystal Replace X400 X400 (14.318MHZ) Check power supply for Check relative circuit 1.8V, 2.5V, and 3.3V...
  • Page 26 Norcent LT2722 Audio Control Block No Sound Check CN604, CN609 Replace speaker and L613, L614, L616, L617 Check U603, U604 output relative circuit and power supply 24V Check CN602 Pin3-4 and Pin1-2 are short when no Check earphone board ear-phone plug...

  • Page 27: White Balance, Luminance Adjustment

    Norcent LT2722 6. White-Balance, Luminance adjustment Approximately 30 minutes should be allowed for warm up before proceeding white balance adjustment. Before started adjust white balance, please setting the Chroma-7120 MEM. Channel 1 to 9300 color, MEM. Channel 2 to 6500 color, and MEM. Channel 3 to 9300 color, (9300 parameter is x =283, y = 297, Y = 380cd/m2 (PC Mode);...
  • Page 28 Norcent LT2722 B. Adjust 6500 color-temperature: 1. Switch the chroma-7120 to RGB-mode (with press “MODE” button) 2. Switch the MEM. Channel to Channel 02 (with up or down arrow on Chroma-7120) 3. The LCD-indicator on chroma-7120 will show x = 313, y=329, Y>380.

  • Page 29: Bom List

    Norcent LT2722 7. BOM List Location Part No. for TPV Description Quantity Unit ADPF24180A2 A/D+D/D POWER CBPFF84KMGNCT MAIN BOARD 11T6048 1 CLAMP-S 15T5908 2 BRACKET 15T6096 2 11 MAIN FRAME 15V6161 1 BKT CONNECTOR 26T 800504 5 BARCODE 34V1305CGN 3L...
  • Page 30 SCREW 3X12mm Q1V 930 6128 SCREW (T3X6) Q1V1030 12128 SCREW 705LF84FB34006 TV BACK COVER ASS'Y E750L 750VVMH0 W12NC CMO 27" NORCENT CONSIGN AD24180A2SMT LCD ADAPTER ASS'Y FOR S DCPF1205A3 DC TO DC BOARD CN951 33T3802 10 PLUG CN952 33T3802 12...
  • Page 31 Norcent LT2722 D942 93T1100 1052T BA159GPT RJ905 95T 90 26 WIRE HARNESS CN921 95T8013 12 8 WIRE HARNESS 705L F94 57 01 Q901/Q941/D902 ASS'Y 705L F94 57 02 Q942/Q943/D927/D928 ASS 705L F94 56 01 IC981 ASS'Y 705L F94 87 01...
  • Page 32 Norcent LT2722 R946 61V1206330 CHIP 33 OHM 5% 1/4W R974 61V1206330 CHIP 33 OHM 5% 1/4W R911 61V1206330 3F 330K OHM 1/4W 1% R912 61V1206330 3F 330K OHM 1/4W 1% R913 61V1206330 3F 330K OHM 1/4W 1% R916 61V1206332 CHIP 3.3KOHM 1/8W 5%...
  • Page 33 Norcent LT2722 CN901 6V 31500 EYELET L904 6V 31502 1.5MM RIVET L906 6V 31502 1.5MM RIVET NR901 6V 31502 1.5MM RIVET NR902 6V 31502 1.5MM RIVET T921 6V 31502 1.5MM RIVET T951 6V 31502 1.5MM RIVET C941 65T 1M103 3T6921 0.01uf 20% 1000V Y5V...
  • Page 34 Norcent LT2722 12T 372 1 MICA Q942 57T 600 45 IRF3415 T0-220AB Q943 57T 600 45 IRF3415 T0-220AB 90T 428 1 HEAT SINK D927 93T 60239 FME-210B T0-220 D928 93T 60247 FME-220A M1T1730 10128 SCREW M3X10 IC981 56T 379 40...
  • Page 35 Norcent LT2722 U603 56T 535 6 MP7720DS-LF U604 56T 535 6 MP7720DS-LF U700 56T 563 27 AIC1117A-18PY SOT223 AI U302 56T 567 7 MST9883C-140 LQFP-80 BY U102 56T 585 4 AIC1117-33CY SOT-223 AN U701 56T 585 4 AIC1117-33CY SOT-223 AN...
  • Page 36 Norcent LT2722 RP302 61V 125101 8 CHIP ARRAY 100OHM 1/15W RP303 61V 125101 8 CHIP ARRAY 100OHM 1/15W RP304 61V 125101 8 CHIP ARRAY 100OHM 1/15W RP305 61V 125101 8 CHIP ARRAY 100OHM 1/15W PR400 61V 125103 8 CHIP ARRAY 10K OHM 1/16...
  • Page 37 Norcent LT2722 R105 61V0603101 CHIPR 100 OHM+-5% 1/10W R177 61V0603101 CHIPR 100 OHM+-5% 1/10W R178 61V0603101 CHIPR 100 OHM+-5% 1/10W R179 61V0603101 CHIPR 100 OHM+-5% 1/10W R180 61V0603101 CHIPR 100 OHM+-5% 1/10W R181 61V0603101 CHIPR 100 OHM+-5% 1/10W R201 61V0603101...
  • Page 38 Norcent LT2722 R414 61V0603103 CHIPR 10K OHM+-5% 1/10W R417 61V0603103 CHIPR 10K OHM+-5% 1/10W R422 61V0603103 CHIPR 10K OHM+-5% 1/10W R426 61V0603103 CHIPR 10K OHM+-5% 1/10W R434 61V0603103 CHIPR 10K OHM+-5% 1/10W R435 61V0603103 CHIPR 10K OHM+-5% 1/10W R436 61V0603103...
  • Page 39 Norcent LT2722 R172 61V0603330 CHIP 33 OH 1/16W R173 61V0603330 CHIP 33 OH 1/16W R409 61V0603330 CHIP 33 OH 1/16W R228 61V0603331 CHIP 330 OHM 1/16W R154 61V0603332 CHIP 3.3K OHM 1/10W R408 61V0603332 CHIP 3.3K OHM 1/10W R438 61V0603332 CHIP 3.3K OHM 1/10W...
  • Page 40 Norcent LT2722 R305 61V0603750 CHIP 75OHM 1/16W R306 61V0603750 CHIP 75OHM 1/16W R308 61V0603750 CHIP 75OHM 1/16W R311 61V0603750 CHIP 75OHM 1/16W R312 61V0603750 CHIP 75OHM 1/16W R315 61V0603750 CHIP 75OHM 1/16W R316 61V0603750 CHIP 75OHM 1/16W R175 61V0603750 9F...
  • Page 41 Norcent LT2722 C424 65T0603104 12 CHIP 0.1UF 50V X7R C425 65T0603104 12 CHIP 0.1UF 50V X7R C426 65T0603104 12 CHIP 0.1UF 50V X7R C427 65T0603104 12 CHIP 0.1UF 50V X7R C428 65T0603104 12 CHIP 0.1UF 50V X7R C429 65T0603104 12 CHIP 0.1UF 50V X7R...
  • Page 42 Norcent LT2722 C495 65T0603104 12 CHIP 0.1UF 50V X7R C496 65T0603104 12 CHIP 0.1UF 50V X7R C497 65T0603104 12 CHIP 0.1UF 50V X7R C498 65T0603104 12 CHIP 0.1UF 50V X7R C499 65T0603104 12 CHIP 0.1UF 50V X7R C500 65T0603104 12 CHIP 0.1UF 50V X7R...
  • Page 43 Norcent LT2722 C329 65T0603104 32 CHIP 0.1UF 50V X7R C330 65T0603104 32 CHIP 0.1UF 50V X7R C331 65T0603104 32 CHIP 0.1UF 50V X7R C332 65T0603104 32 CHIP 0.1UF 50V X7R C337 65T0603104 32 CHIP 0.1UF 50V X7R C338 65T0603104 32 CHIP 0.1UF 50V X7R...
  • Page 44 Norcent LT2722 C738 65T0603104 32 CHIP 0.1UF 50V X7R C742 65T0603104 32 CHIP 0.1UF 50V X7R C743 65T0603104 32 CHIP 0.1UF 50V X7R C745 65T0603104 32 CHIP 0.1UF 50V X7R C746 65T0603104 32 CHIP 0.1UF 50V X7R C747 65T0603104 32 CHIP 0.1UF 50V X7R...
  • Page 45 Norcent LT2722 C236 65T0603224 17 CHIP 0.22UF 16V Y5V C237 65T0603224 17 CHIP 0.22UF 16V Y5V C238 65T0603224 17 CHIP 0.22UF 16V Y5V C246 65T0603224 17 CHIP 0.22UF 16V Y5V C137 65T0603330 31 CHIP 33PF 50V NPO C157 65T0603330 31...
  • Page 46 Norcent LT2722 C320 65T0603474 27 CHIP 0.47UF 25V Y5V C607 65T0603474 27 CHIP 0.47UF 25V Y5V C608 65T0603474 27 CHIP 0.47UF 25V Y5V C160 65T0603560 31 CHIP 56PF 50V NPO C171 65T0603560 31 CHIP 56PF 50V NPO C112 65T0603561 31...
  • Page 47 Norcent LT2722 C315 67T 312100 3 SMD EC 10UF 16V 85C B C335 67T 312100 3 SMD EC 10UF 16V 85C B C482 67T 312100 3 SMD EC 10UF 16V 85C B C617 67T 312100 3 SMD EC 10UF 16V 85C B...
  • Page 48 Norcent LT2722 C484 67T 312220 3 SMD EC 22UF 16V 85C C489 67T 312220 3 SMD EC 22UF 16V 85C C494 67T 312220 3 SMD EC 22UF 16V 85C C503 67T 312220 3 SMD EC 22UF 16V 85C C509 67T 312220 3...
  • Page 49 Norcent LT2722 L103 71T 57G601 BEAD 1206 600 OHM L104 71T 57G601 BEAD 1206 600 OHM L105 71T 57G601 BEAD 1206 600 OHM L106 71T 57G601 BEAD 1206 600 OHM L107 71T 57G601 BEAD 1206 600 OHM L108 71T 57G601...
  • Page 50 Norcent LT2722 L100 73T 57569 CHIP INDUCTOR ZD300 93T 39147 TZMC 5V6 ZD301 93T 39147 TZMC 5V6 ZD302 93T 39147 TZMC 5V6 ZD303 93T 39147 TZMC 5V6 D602 93T 60211 SMB340 BY FULL POWER D603 93T 60211 SMB340 BY FULL POWER...
  • Page 51 Norcent LT2722 715V1105 2EAR SMTIRPFF91A1 TUNER BOARD SMT 33T3802 5 AUDIO IN D600 56T 627 3 TSOP4838 TP600 95T 900 53 HARNESS 95MM R600 61V0603000 CHIPR 0OHM +-5% 1/10W C600 65T0603101 31 CHIP 100PF 50V NPO C601 65T0603104 32 CHIP 0.1UF 50V X7R...

  • Page 52: Pcb Layout

    Norcent LT2722 8. PCB Layout 8.1 Main Board...
  • Page 53 Norcent LT2722...
  • Page 54 Norcent LT2722...
  • Page 55 Norcent LT2722...

  • Page 56: Power Board

    Norcent LT2722 8.2 Power Board...
  • Page 57 Norcent LT2722...

  • Page 58: Key/Ir Board

    Norcent LT2722 8.3 Key/IR Board...

  • Page 59: Earphone Board

    Norcent LT2722 8.4 Earphone Board...

  • Page 60: Block Diagram

    Norcent LT2722 9. Block Diagram 9.1 Main board Sdaram 24C32 Philips (EM6A9320B1) EEPROM (TUNER) AT29LV040A-15JC Flash ROM 3D(UPD6408 27 inch 3) ComFilter Panel TV audio (SIF) Key PAD Board Genesis 1501 Scalar NJM2244 VIDEO 1 Selector IR & LVDS VIDEO 2...

  • Page 61: Power Board

    Norcent LT2722 9.2 Power Board...

  • Page 62: Exploded View

    Norcent LT2722 9.3 Exploded View...

  • Page 63: Schematic Diagram

    Norcent LT2722 10. Schematic Diagram 10.1 Main Board CONTENTS REVISION HISTORY SCHEMATIC Name SHEET Date Author Comments Draft Release 01. Contents, Revision History Johnny 01/2004 02. Tuner & MSP3455G & Video SW 03. UPD64038 04. VPC3230D 05.V-Chip_Z86129&SRS 06. MST9883C 07. DSUB 08.
  • Page 64 Norcent LT2722 C151 AV_1 R162 1/16W 10uF/16V T100 Tuner U100 NJM2244 TUNER C153 C152 VIN1 VOUT 47pF AV_2 VIN2 L105 Tuner VIN3 600 OHM L106 L107 R165 600 OHM 600 OHM 1/16W 10uF/16V C10B 100uF/16V C154 C156 600 OHM Tuner_out...
  • Page 65 Norcent LT2722 C101 D100 10uF/16V MLL4148 R101 1/16W R102 3VRST 100K 1/16W R103 1/16W R104 2,5,6,8,10 SEC_SCL 1/16W R105 1/16W 2,5,6,8,10 SEC_SDA 1/16W 1/16W R106 A12V R111 R112 1/16W R108 R109 R110 R107 C102 C103 1/8W 1/16W 1/16W 4.7K 1/16W 47uF/16V 0.1uF...
  • Page 66 Norcent LT2722 18pF 20.25MHz C221 SVIDEO_C C265 R230 R258 0.001uF 1/16W L205 1/16W 600 OHM C223 18pF VDDA L204 C248 C1IN 600 OHM C252 10uF/16V R228 C220 0.1uF VD_Hs 1/16W 0.001uF L210 600 OHM FROM COMB_FILTER C222 R229 C247 22pF...
  • Page 67 Norcent LT2722 L207 600 OHM R201 100 1/16W SRSIN_L C258 C201 C202 10uF/16V U200 22uF/16V 2.2uF/16V C259 0.1uF R202 100 1/16W C205 SRSIN_R C204 2.2uF/16V C203 0.47uF SRSOUT_L11 2.2uF/16V R203 R204 1/16W 1/16W SRS_ON/OFF 8 R205 100K 1/16W C206 2.2uF/16V...
  • Page 68 Norcent LT2722 +3.3V_AP HDTV_Cb 9883_Cb R318 R334 0 1/16W 2.7K 1/16W HDTV_Y 9883_Y R335 0 1/16W HDTV_Cr 9883_Cr C317 R336 0 1/16W C300 C316 0.1uF 0.0082uF 0.082uF 1/16W R319 HS_OUT +3.3VDD AD_Clamp R320 1/16W +3.3V_AD AD_COAST R321 1/16W R322 NC...
  • Page 69 Norcent LT2722 5VD_ADDC +5VP R301 R302 U300 4.7K 1/16W 4.7K 1/16W D301 MLL4148 VCLK VGA_SCL C301 R303 8,10 VGA_SCL VGA_SDA 0.1uF 1/16W 8,10 VGA_SDA 24LC21A/SN C302 C303 100pF 100pF D302 R337 MLL4148 1/16W VGA_CAB 8 R338 100K 1/16W R304 5VD_AVIE...
  • Page 70 Norcent LT2722 +1.8V_CORE Place Series termination resistors on bidirectional lines-DATA and DQS midway between gm1601 BGA and memory Max trace length on this interfce is 2.5 inches C419 C421 C422 C423 C424 C425 C426 C427 C428 C429 C430 C431 C432...
  • Page 71 Norcent LT2722 Frame Memory FSDATA[0..31] FSVREF +2.5V_DDR1 +2.5V_DDR U401 FSADDR[0..11] FSADDR0 FSDATA0 L400 FSADDR1 FSDATA1 600 OHM FSADDR2 FSDATA2 FSADDR3 FSDATA3 FSADDR4 FSDATA4 FSADDR5 FSDATA5 C401 C403 C400 C404 C405 C406 C407 C408 C409 C410 C411 C412 C413 C414 C415...
  • Page 72 Norcent LT2722 LVDS Panel connector CN607 AUDIO_L Interfaces directly to SXGA RP600 10 1/16W CN604 ADC_R0 600 OHM and UXGA LVDS Panels ADC_R1 L613 Audio_L+ CONNECTOR for PANEL ADC_R2 ADC_R3 600 OHM CN605 L614 RP601 10 1/16W AGND CON30 ADC_R4...
  • Page 73 Norcent LT2722 PC_L C689 L602 600 OHM 10uF/16V PC_R C690 L603 600 OHM CN601 U600 10uF/16V PHONEJACK EAR_R CN602 CompR C606 C605 Comp_R EAR_L C683 470pF 470pF L605 1/16W LP601 HDTVR 10uF/16V Comp_L DVDR EAR_R C684 C603 C604 10uF/16V PRE_R...
  • Page 74 Norcent LT2722 L701 L702 U701 3.3VS 600 OHM 600 OHM AIC1117-33CY +5VPIN 5VP : From Power Supply 5V 12VP : From Power Supply12V C701 C702 C703 C705 A12V UPD64038 10uF/16V 10uF/16V 10uF/16V L703 C704 0.1uF 0.1uF 9V : For TDA9850...

  • Page 75: Power Board

    Norcent LT2722 10.2 Power Board C970 0.0022uF/250V C915 0.0022uF/250V P1-1 D901 ML35 P2-1 L951 RJ905 CN951 L906 D902 NR901 NR902 BEAD T951 L952 L953 FOR BACKLIGHT 24V/5A PFC CHOKE FMX-G26S 5A/3 5A/3 PQ3225/Lp=390uH sence choke common choke C905 R906 C964...
  • Page 76 Norcent LT2722 Q801 L801 AO4411 22uH C802 R804 1uF/25V D801 D802 1/4W C806 C807 C808 470uF/10V 470uF/10V SSM54 SSM54 1000PF IC801 C810 LM3485 1000PF PGATE R801 C803 C801 1/16W 1000PF PWGND AGND CN801 220uF/25V ISENSE R802 C804 1/16W 1000PF R803...

  • Page 77: Key/Ir Board

    Norcent LT2722 10.3 Key/IR Board Menu CH_Down CH_UP Power VOL_Down VOL_UP MODE_Sel R608 R607 R606 R605 R604 R603 R602 5.1K 2.2K 5.1K 2.2K S605 S600 S606 S601 S604 S603 S602 CN600 KEY_I_3 KEY_I_2 KEY_1_1 CONN R600 R601 3.9K 3.9K FB600...

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