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Akai NXT2766 Service Manual

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COLOR TELEVISION
NXT2766
(TS2766)

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Summary of Contents for Akai NXT2766

  • Page 1 COLOR TELEVISION NXT2766 (TS2766)

  • Page 2: Table Of Contents

    CONTENTS Safety Precautions………………………………………………………………………..…… Alignment instruction. ………………………………….…………………………….……. Debugging instruction …………………………………………….…………………………. Block diagram ……………………………..…..…..…..…..…..…….………….…………… IC Block diagram……………………..……………………….……………………………… Wiring diagram……………………………………………………………………………..… Exploded view………..…..…..…..…..…..…..…..…..…..…..…..…..…..…..…..…..…..…... Part list ………………………………………………………..……………......Schematic diagram …………………………………………………………………….……..

  • Page 3: Safety Precautions

    Note:This service manual is only for professional service personnel’s reference. Before servicing the unit, please read the following items carefully. 1. SAFETY INSTRUCTION AND GENERAL INSTRUCTION Before servicing and aligning this equipment, please read the following “X-RAY RADIATION PRECAUTION” , “SAFETY PRECAUTION” and “PRODUCT SAFETY NOTICE”. 1.1 X-RAY RADIATION PRECAUTION 1）...

  • Page 4: Alignment Instruction

    characteristics are often passed unnoticed by a visual inspection and the X-RAY RADIATION protection afforded by them cannot necessarily be obtained by using replacement components rated for higher wattage, etc. Replacement parts which have these special safety characteristics are identified in this manual and its supplement electrical components having such features are shaded on the schematic diagram and the parts list.

  • Page 5: Debugging Instruction

    3.2 OSCILLOGRAPH 3.3 HIGH-VOLTAMETER 3.4 DIGITAL MULTIMETER 3.5 AC ATTACK PULL TEST EQUIPMENT 3.6 SCAN frequency signal generator BT-3 4 Debugging instruction 4.1 enter into the factory debugging menu use to the remote control(RC-A23),follow to the blow model enter into the factory: DISPLAY →...
  • Page 6 4.7 Use white balancer to rectify the white balance under following conditions color temperature:12000K+8MPCD x =0.270± 0.008 Y=0.283±0.008; dark space: 4.5nit, bright space: 60nit Note:1. While the colour saturation changed from maximum to minimum, if the dark balance appears changeable,adjust RY.TV and BY.TV (P12) to let it coincide with white balance. 2.
  • Page 7 4.16 the factory menu adjustment model pre-set item Pre-set model P1-60 V SIZE 60HZ field amplitude V SHIFT 60HZ field center H-PHASE 60HZ H-center V LINE 60HZ V-line V SC 60HZ field S-correct V COMP field amplitude compensate fixed L.BLK Left blanking fixed R.BLK...
  • Page 8 SUB-COL Sub-colour fixed SUB-SHP Sub-definition fixed SUB-TINT Sub-tint fixed VOL.FIL Volume control ADC filter fixed OSD.COT OSD contrast fixed OSD.HPOS OSD center fixed Line AFC loop gain and sync fixed gate switch VIF SW IF3=45.75MHZ fixed SIF SW Sound IF0=4.5MHZ fixed VIDEO LEVEL VIDEO LEVEL...
  • Page 9 FBP BLK SW Horizontal blanking switch fixed,0=inside produce;1=FBP and inside logic “and” DC REST DC recover rate fixed,0=100% 1=107% Field frequency division CD.MODE fixed,0=auto model CORE GAIN Noise reduction fixed,0=OFF 1=MIN 3=MAX γ.GAMA r-correct fixed,0=OFF RGB DC output RGB TEMP.SW fixed temperature speciality A.MONI SW...
  • Page 10 AV selection AV input select(3=AV1/AV2/S/DVD) MTS IC selection 0=nothing,1=72700 2=AN5832 V.OFF.MOTE Turn off model 0=discharge,1=close PWR.MEM Turn on model 0=standby,1=auto turn on,2=memory 1115 select LV1115 fixed,0=nothing;1=have No signal background BLCK GROND 0=nothing 1/3=blue background;2=black background selection South America and North N/PN 0=south america;1=north america America selection...

  • Page 11: Block Diagram

    BLOCK DIAGRAM...

  • Page 12: Ic Block Diagram

    MAIN IC LA76930 BLOCK DIAGRAM...
  • Page 13 Function introduction to pin function Reference function Reference voltage voltage SIF output 2.28 PIF input1 2.86 PIF AGC 2.61 PIF input 2 2.86 SIF input 3.11 IF GND FM filter 2.64 RF AGC output 4.55 FM filter/sound output 2.25 Video output 2.30 Sound output 2.24...
  • Page 14 POWER H=OFF 5.00 L=ON Turn voltage 1.73 5.00 output Mute, high 5.00 Level availability I2C DATA 5.00 x T2 4.50 I2C CLOCK 5.00 x T1 2.70 AN7522 Pins function function function power GND input CH1+ output CH2 input volume CH1- output CH1+ output Stand-by GND (CH2 output)
  • Page 15 FSCQ1265RT...

  • Page 16: Wiring Diagram

    WIRING DIAGRAM...

  • Page 17: Exploded View

    EXPLODED VIEW...
  • Page 18 TS2766 PART LIST OF EXPLODED VIEW DESCRIPTION PART# REAR NAMEPLATE 880-10205-906 REAR CABINET 780-E68CG-020 SIDE AV BRACKET 870-3B051-022 CRT BOARD ASSY 667-TSE30-02 COMPONENT SCREW 648-30001-00 BRAIDED LINE 123-30001-04 BRAIDED PULLING SPRING 838-10401-00 CRT FIXED BRACKET 615-10184-00 LINE CLASP 742-30032/38-00 REAR PANEL 808-1D650-020 FRAME 863-6A127U000F...

  • Page 19: Part List

    PART LIST PART# DESCRIPTION LOCA.NO. 100-TS27660-10 NXT2766 100-TS27660-01 TS2766 123-30001-04 TWIST WIRE 335-2942R-00U CRT A68CPBB02X01 477-12904-00U DEGAUSS COIL DX-29! 488-10012-00 BATTERY 7＃(made in china 491-752J0-02 POWER CORD UL 604-TS27667-00 OWNER'S MANUAL(NEXXTECH,CAN) 611-E66C0J0H4A FRONT CABINET ASS'Y (ABS V0 SILVER WHITE 03...
  • Page 20 GREY 10C 881-60085 BLANK WARNING LABEL 881-60085 BLANK WARNING LABEL 881-64014-00 TRANSPORTATION LABEL (NXT2766,NEXXTECH) 881-64055-00 WARNING LABEL (NXT2066,NEXXTECH) 881-64056-00 REMOTE CONTROL UNIT LABEL (NXT2766,NEXXTECH) 881-80810-00 PASSWORD CARD Nexxxtech 886-31454-290W CARTON BOX (NXT2766,NEXXTECH) 887-20044-01 POWER CORD COVER 887-20171-00 PALSTIC BAG 70-500-0.06 887-21114-04...
  • Page 21 JUMPER WIRE CS17 JUMPER WIRE CS20 JUMPER WIRE WS01 343-18150-104 TRANSISTOR 2SC1815-Y VS01 343-18150-104 TRANSISTOR 2SC1815-Y VS02 364-3E123-00 40-PINS CONNECTORS L40P XS01 459-2410R-00 CERAMIC CAPACITOR DD308-63F104Z50 CS04 459-2410R-00 CERAMIC CAPACITOR DD308-63F104Z50 CS06 459-2410R-00 CERAMIC CAPACITOR DD308-63F104Z50 CS10 459-2410R-00 CERAMIC CAPACITOR DD308-63F104Z50 CS21 462-B0322-H02 POLYESTER CAPACITOR CL21X-50V-0.022uF-J...
  • Page 22 615-20481-00 SPEAK ASS'Y 384-40908-B0 SPEAKER ST613-04 655-41201-317 (4-PINS) LEAD WITH HOUSING 851-53010-31 SCREW SJ2825 ST3X10FT-D.Zn 868-20217-00 WASHER 870-30059-00 SPEAK BRACKET 667-TSX66-01 MAIN PCB ASS'Y 667-TSX66-01\ MAIN PCB ASS'Y (MANUAL INSERTION ) JUMPER WIRE C103 JUMPER WIRE L303 JUMPER WIRE JUMPER WIRE V702(BC) JUMPER WIRE X301...
  • Page 23 364-34101-00 4-PINS CONNECTORS TJC3-04A X728 364-34101-00 4-PINS CONNECTORS TJC3-04A XS202 364-35101-00 5-PINS CONNECTORS TJC3-05A XS604(2,6) 364-36102-00 6-PINS CONNECTORS TJC2-6A XS301 364-77511-00 FUSE HOLDER FU501 364-77511-00 FUSE HOLDER 364-91202-00 S-VIDEO TERMINAL CKX5-2K-2 XS602 364-99208-00 AV JACK AV901-5 XS601 457-12003-90U RELAY JQX-115F-012-1H1 ! RL01 458-07009-00 SAW FILTER M1859M...
  • Page 24 467-2H239-H0D METAL RESISTOR 3W-3.9kΩ-JL R332 467-4F001-H0 FUSIBLE RESISTOR 1W-1Ω-JL R307 467-4F010-H0 FUSIBLE RESISTOR 1W-10Ω-JL R304 467-4FA22-H0 FUSIBLE RESISTOR 1W-2.2Ω-JL R308 467-4FA24-H0 FUSIBLE RESISTOR 1W-2.4Ω-JL R306 467-4FB33-H0 FUSIBLE RESISTOR 1W-0.33Ω-JL R531 467-6F001-H0 WIRE ROUND RESISTOR RX21-1-1Ω-J R324 467-8E422-H0 SOLID RESISTOR 1/2W-220KΩ-JL ! R504 467-8E522-H0A SOLID RESISTOR 1/2W-2.2M-J...
  • Page 25 851-13008-56 SCREW P(+) T3X8S-R N301 851-13008-56 SCREW P(+) T3X8S-R N501 851-13008-56 SCREW P(+) T3X8S-R N701 (2) 851-13008-56 SCREW P(+) T3X8S-R V302 851-13008-56 SCREW P(+) T3X8S-R 851-23010-14 SCREW SJ2824 ST3X10C-Y BACK 851-23010-14 SCREW SJ2824 ST3X10C-Y 851-24014-31 SCREW SJ2824 ST4X14C-D.Zn BACK 851-24014-31 SCREW SJ2824 ST4X14C-D.Zn 851-24014-31 SCREW SJ2824 ST4X14C-D.Zn...
  • Page 26 JUMPER WIRE J110 JUMPER WIRE J201 JUMPER WIRE J202 JUMPER WIRE J203 JUMPER WIRE J204 JUMPER WIRE J205 JUMPER WIRE J206 JUMPER WIRE J207 JUMPER WIRE J208 JUMPER WIRE J209 JUMPER WIRE J210 JUMPER WIRE J212 JUMPER WIRE J213 JUMPER WIRE J214 JUMPER WIRE J215...
  • Page 27 JUMPER WIRE J309 JUMPER WIRE JUMPER WIRE J310 JUMPER WIRE J311 JUMPER WIRE J311 JUMPER WIRE J312 JUMPER WIRE J501 JUMPER WIRE J502 JUMPER WIRE J503 JUMPER WIRE J504 JUMPER WIRE J505 JUMPER WIRE J506 JUMPER WIRE J507 JUMPER WIRE J507 JUMPER WIRE J508...
  • Page 28 JUMPER WIRE J713 JUMPER WIRE J714 JUMPER WIRE J715 JUMPER WIRE J716 JUMPER WIRE J719 JUMPER WIRE JAA1 JUMPER WIRE JAA2 JUMPER WIRE JAA3 JUMPER WIRE LAA1 JUMPER WIRE LAA2 JUMPER WIRE R314 JUMPER WIRE R322 JUMPER WIRE R503 JUMPER WIRE R530 JUMPER WIRE R703...
  • Page 29 360-10001-00 TACT SWITCH KFC-A06-4X4.5X5B S902 360-10001-00 TACT SWITCH KFC-A06-4X4.5X5B S903 360-10001-00 TACT SWITCH KFC-A06-4X4.5X5B S904 360-10001-00 TACT SWITCH KFC-A06-4X4.5X5B S905 360-10001-00 TACT SWITCH KFC-A06-4X4.5X5B S906 364-33101-00 3-PINS CONNECTORS TJC3-03A XS902 364-93202-00 AV JACK AV306-2 459-2015H-102 CERAMIC CAPACITOR CC45-CH1H150JYR C201 459-2015H-102 CERAMIC CAPACITOR CC45-CH1H150JYR C220 459-2015H-102...
  • Page 30 462-00315-H02 POLYESTER CAPACITOR CL11-100V-0.015uF-J C205 462-00315-H02 POLYESTER CAPACITOR CL11-100V-0.015uF-J C216 462-00322-H02 POLYESTER CAPACITOR CL11-100V-0.022uF-J C510 462-00333-H02 POLYESTER CAPACITOR CL11-100V-0.033uF-J C222 462-00347-K02 POLYESTER CAPACITOR CL11-100V-0.047uF-K C512 462-00410-K02 POLYESTER CAPACITOR CL11-100V-0.1uF-K C326 462-00410-K02 POLYESTER CAPACITOR CL11-100V-0.1uF-K C328 462-B0410-H02 POLYESTER CAPACITOR CL21X-50V-0.1uF-J C245 462-B0410-H02 POLYESTER CAPACITOR CL21X-50V-0.1uF-J C527...
  • Page 31 464-6D610-M02 ELECTROLYTIC CAPACITOR CD110-16V-10uF-M C606 464-6D610-M02 ELECTROLYTIC CAPACITOR CD110-16V-10uF-M C611 464-6D610-M02 ELECTROLYTIC CAPACITOR CD110-16V-10uF-M C612 464-6D610-M02 ELECTROLYTIC CAPACITOR CD110-16V-10uF-M C613 464-6D610-M02 ELECTROLYTIC CAPACITOR CD110-16V-10uF-M C732 464-6D610-M02 ELECTROLYTIC CAPACITOR CD110-16V-10uF-M C733 464-6D622-M0 ELECTROLYTIC CAPACITOR CD110-16V-22uF-M C901 464-6D622-M02 *ELECTROLYTIC CAPACITOR CD110-16V-22uF-M C211 464-6D710-M02 ELECTROLYTIC CAPACITOR CD110-16V-100uF-M C212...
  • Page 32 467-1C122-H03 CARBON RESISTOR 1/6W-220Ω-J R525 467-1C133-H03 CARBON RESISTOR 1/6W-330Ω-J R326 467-1C139-H03 CARBON RESISTOR 1/6W-390Ω-J R234 467-1C147-H03 CARBON RESISTOR 1/6W-470Ω-J R349 467-1C147-H03 CARBON RESISTOR 1/6W-470Ω-J R505 467-1C156-H03 CARBON RESISTOR 1/6W-560Ω-J R231 467-1C156-H03 CARBON RESISTOR 1/6W-560Ω-J R235 467-1C156-H03 CARBON RESISTOR 1/6W-560Ω-J R239 467-1C156-H03 CARBON RESISTOR 1/6W-560Ω-J R240...
  • Page 33 467-1C247-H03 CARBON RESISTOR 1/6W-4.7K-J R312 467-1C247-H03 CARBON RESISTOR 1/6W-4.7K-J R313 467-1C247-H03 CARBON RESISTOR 1/6W-4.7K-J R615 467-1C247-H03 CARBON RESISTOR 1/6W-4.7K-J R616 467-1C247-H03 CARBON RESISTOR 1/6W-4.7K-J R720 467-1C251-H03 CARBON RESISTOR 1/6W-5.1K-J R516 467-1C251-H03 CARBON RESISTOR 1/6W-5.1K-J R524 467-1C251-H03 CARBON RESISTOR 1/6W-5.1K-J R526 467-1C251-H03 CARBON RESISTOR 1/6W-5.1K-J R528...
  • Page 34 467-1C347-H03 CARBON RESISTOR 1/6W-47K-J R238 467-1C368-H03 CARBON RESISTOR 1/6W-68K-J R242 467-1C368-H03 CARBON RESISTOR 1/6W-68K-J R344 467-1C410-H03 CARBON RESISTOR 1/6W-100K-J R101 467-1C410-H03 CARBON RESISTOR 1/6W-100K-J R527 467-1C410-H03 CARBON RESISTOR 1/6W-100K-J R733 467-1C410-H03 CARBON RESISTOR 1/6W-100K-J R737 467-1C410-H03 CARBON RESISTOR 1/6W-100K-J R743 467-1C410-H03 CARBON RESISTOR 1/6W-100K-J R744...
  • Page 35 895-6020025-50 RIVET GB876-86-2X2.5-COPPER 895-6020025-50 RIVET GB876-86-2X2.5-COPPER 895-6020025-50 RIVET GB876-86-2X2.5-COPPER 895-6020025-50 RIVET GB876-86-2X2.5-COPPER 895-6020025-50 RIVET GB876-86-2X2.5-COPPER 895-6020025-50 RIVET GB876-86-2X2.5-COPPER 895-6020025-50 RIVET GB876-86-2X2.5-COPPER 895-6020025-50 RIVET GB876-86-2X2.5-COPPER 895-6020025-50 RIVET GB876-86-2X2.5-COPPER 895-6020025-50 RIVET GB876-86-2X2.5-COPPER 895-6020025-50 RIVET GB876-86-2X2.5-COPPER 895-6020025-50 RIVET GB876-86-2X2.5-COPPER 895-6020025-50 RIVET GB876-86-2X2.5-COPPER 895-6020025-50 RIVET GB876-86-2X2.5-COPPER 895-6020025-50 RIVET GB876-86-2X2.5-COPPER...
  • Page 36 667-TS32351-05 Stand By KEY BOARD ASS'Y...
  • Page 37 XS604 XS601 PIN6 G V G R L XS602 C741 C742 C743 C744 C601 C606 C604 R601 100p 100p 100p 100p 0.01uF 10u/16A 10u/16v R616 AN7522 N701 L601 4.7K 56uH R607 R608 R744 R743 R604 R606 R610 R615 100K 100K R602 R603 C610...

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Ts2766