1. Manuals
  2. Brands
  3. akira Manuals
  4. TV
  5. 14THS3/CE
  6. Service manual

akira 14THS3/CE Service Manual

Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
C
o
l
C
o
l
C
o
l
S
e
r
v
i
c
S
e
r
v
i
c
S
e
r
v
i
c
o
u
r
T
V
o
u
r
T
V
o
u
r
T
V
e
M
a
n
e
M
a
n
e
M
a
n
u
a
l
u
a
l
u
a
l

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the 14THS3/CE and is the answer not in the manual?

Questions and answers

Related Manuals for akira 14THS3/CE

Summary of Contents for akira 14THS3/CE

  • Page 2 Model No: 14THS3/CE.doc Version 1.0...

  • Page 3: Table Of Contents

    TECHNICAL SPECIFICATION........................ 7 GENERAL SPECIFICATION........................8 HORIZONTAL AND VERTICAL CIRCUIT.................... 9 CHASSIS BLOCK DIAGRAM ........................10 FAULT FINDING TREES........................11 IC BLOCK DIAGRAM..........................18 FACTORY MENU ............................40 EXPLODED VIEW AND PART NAME....................43 BOM LIST ..............................44 CIRCUIT DIAGRAM ..........................64 Model No: 14THS3/CE.doc Version 1.0...

  • Page 4: Safety Notice

    Do not hold the CRT neck in case of causing damage to the CRT. 2. When the power cord needs replacing, use the same one as that provided by AKIRA factory. 3. Voltage exists between the hot and cold ground when TV is in operation. Install a separation transformer during repairing or connecting to any tester for the sake of safety.
  • Page 5 5. When replacing old wire, wind new one round the shaft to weld. When replacing components with safety in performance, use the same type as that specified by AKIRA and install it in the former way. 6. Never place wire near high-temperature or high-voltage components.

  • Page 6: General Description

    44 of OM8370 and then input to pin 1 and pin 12 of HEF4052BP. The sound signals from RF and AV are selected in it. The selected signal is output from Pin 3 and pin13, then input AN7522N (sound amplifier) or output from AV terminals. Model No: 14THS3/CE.doc Version 1.0...

  • Page 7: Technical Specification

    Brightness &contrast Maximum ≤ 1.2mA Heater Voltage TV operate normally = 6.2Vac Heater Normal operating = 112Vdc Sound power RF signal input broadcasting at V = 6.3Vrms output 217.25MHz/BG/DK(1KHz) P = 5Watts X 2 Volume is maximum Model No: 14THS3/CE.doc Version 1.0...

  • Page 8: General Specification

    Color picture tube 14” 21” 90 degree tube Remote control distance Video/Audio (L/R) 2set input YUV input External input/output S-Video input Video/ Audio (L/R) 1 set output C Bus Control Auto Search Off/On Timer Teletext Model No: 14THS3/CE.doc Version 1.0...

  • Page 9: Horizontal And Vertical Circuit

    The IC of KA5Q0765RT is adapted in this chassis; it is the product of Fairchild. It supplies four DC voltages, one is the +B＝110V, another is Hcc＝26V, the third is 13V (the sound drive voltage), the fourth is +16V. The +16V can generate the +8V, +5V and +3.3V by the special generators. Model No: 14THS3/CE.doc Version 1.0...

  • Page 10: Chassis Block Diagram

    T450 V451 KEY BOARD RECEIVER N702 U701 ST24C08 FBT(T402) BSC25 POWER SUPPLY 200V CIRCUIT AC150-260V Bridge Resistance V1512 V553 V1511 T +300V 50/60Hz Filter C507 disturbance rectification 501 N504 -15V +15V C501 L502 VD503-VD506 110V Model No: 14THS3/CE.doc Version 1.0...

  • Page 11: Fault Finding Trees

    VD522-VD529 Check V451,T451,T450, C455,C456,T451 Deflection coil 115V C467 Test the voltage of N301 pin1 Check T451,V451,R458 Check T451 Check L452,VD436,C461 4.5-5.5V Deflection coil CPU has sent the Check if V504 Power-off signal is broken down Model No: 14THS3/CE.doc Version 1.0...
  • Page 12 Check the voltage on the C705 Check N703, A101 0-33V Check R707, C707, A101 Check R301,R302, The voltage between VL and BH vary from 0V to N301,A101 5V or not when auto searching Check ,V701,N301, R701, R701A ,R704,R705,C701,C705,C706 Model No: 14THS3/CE.doc Version 1.0...
  • Page 13 Check if voltage on pin 31 of N301 is 1.7V ≥2V Check C361,C362,L361,N301 Check C323,A101,N301 Observe if these is snow-noise-wave disturbance on the CRT via using “ Signal-input way ” by touching pin 51,52,53 of N301 Check R381,R382,R383,V912,V922,V932,N301 Model No: 14THS3/CE.doc Version 1.0...
  • Page 14 The voltage on pin 9,10of N121 12.5V Check VD521,R165,C522,T501,N161 Hear if there is the voice liking “Ka…Ka ” in the loudspeaker via using “ Signal-input way ” by touching pin 2,10 of N701 Check R126,N505, N121 Check SP161, SP162, N161 Model No: 14THS3/CE.doc Version 1.0...
  • Page 15 The deflection yoke on the CRT Check R405, C408, N401, N301 Abnormal Measuring the waveform on pin 5 of N401 Check N402 Normal Measuring the waveform on the deflection yoke Abnormal Check R407,C408,R406,XS403, deflection yoke Model No: 14THS3/CE.doc Version 1.0...
  • Page 16 Television’ s remote-control system also needs reset circuit that can preset the values in internal register. The circuit around pin57 of N204 is called auto-reset circuit. If UOC detects errors in resetting, it will come to the state of programme protected. Model No: 14THS3/CE.doc Version 1.0...
  • Page 17 We can judge this failure by measuring the wave of the character in an oscilloscope. The detail checking and repairing steps are as follow: No OSD Check the wave on the pin 7 of FBT Check FBT T451 Check C482, R485, VD483, R487, N301 Model No: 14THS3/CE.doc Version 1.0...

  • Page 18: Ic Block Diagram

    IC BLOCK DIAGRAM Fig 1: OM8370 Illustration Model No: 14THS3/CE.doc Version 1.0...
  • Page 19 Pin 32 AVL filter Pin 33 Horizontal drive signal output, needs a resistor in series to +8V. Pin 34 Sandcastle output /flyback input. Pin 35 External audio input, this pin should be grounded in this chassis. Model No: 14THS3/CE.doc Version 1.0...
  • Page 20 Pin 57, Pin 58, 12MHz crystal Pin 59 Pin 60 Reset. NC in this chassis Pin 61 +3.3V Pin 62 Pin 63 This pin is connected to the HEF4094. Functions expending. Pin 64 IR signal input. Model No: 14THS3/CE.doc Version 1.0...
  • Page 21 Fig 2: HEF4052BP Illustration Model No: 14THS3/CE.doc Version 1.0...
  • Page 22 – Z – Z – Z – Z – Z – Z NONE Notes: H = HIGH state (the more positive voltage) L = LOW state (the less positive voltage) X = state is immaterial Model No: 14THS3/CE.doc Version 1.0...
  • Page 23 IC N402 <VERTICAL OUTPUT> LA78040 (or STV9302) Model No: 14THS3/CE.doc Version 1.0...
  • Page 24 Model No: 14THS3/CE.doc Version 1.0...
  • Page 25 Model No: 14THS3/CE.doc Version 1.0...
  • Page 26 Model No: 14THS3/CE.doc Version 1.0...
  • Page 27 Model No: 14THS3/CE.doc Version 1.0...
  • Page 28 Model No: 14THS3/CE.doc Version 1.0...
  • Page 29 Model No: 14THS3/CE.doc Version 1.0...
  • Page 30 Model No: 14THS3/CE.doc Version 1.0...
  • Page 31 Model No: 14THS3/CE.doc Version 1.0...
  • Page 32 Model No: 14THS3/CE.doc Version 1.0...
  • Page 33 Model No: 14THS3/CE.doc Version 1.0...
  • Page 34 Model No: 14THS3/CE.doc Version 1.0...
  • Page 35 Inverting input Pump up out VER output Output stage Vcc Non inv. Put Model No: 14THS3/CE.doc Version 1.0...
  • Page 36 Fig 4 AN7522N Illustration Model No: 14THS3/CE.doc Version 1.0...
  • Page 37 Model No: 14THS3/CE.doc Version 1.0...
  • Page 38 Model No: 14THS3/CE.doc Version 1.0...
  • Page 39 Fig 5: KA5Q0765RT Illustration Model No: 14THS3/CE.doc Version 1.0...

  • Page 40: Factory Menu

    Red bias adjust Green bias adjust Red drive adjust Green drive adjust Blue drive adjust Sub-bright adjust Note: 1. BT /CT can not be remembered. 2. RB /GB /RD /GD /BD /SB can be remembered. Model No: 14THS3/CE.doc Version 1.0...
  • Page 41 1: USA IFS REDUCE 0: Decrease the sensitivity of IF while search. 1: Not decrease the sensitivity of IF while search. VOL PIN 0: OC gate output 1: PULL-PUSH output SOFT CLIP PEAK WHITE CORING Model No: 14THS3/CE.doc Version 1.0...
  • Page 42 Frequency point setting in FS MODE (No use) FS-VL-L Frequency point setting in FS MODE (No use) FS-VH-H Frequency point setting is FS MODE (No use) FS-VH-L Frequency point setting in FS MODE (No use) Model No: 14THS3/CE.doc Version 1.0...

  • Page 43: Exploded View And Part Name

    EXPLODED VIEW AND PART NAME Model No: 14THS3/CE.doc Version 1.0...

  • Page 44: Bom List

    RT13-1/6W-100Ω-J D10B101J-T RDB101J-NAAT R402、452、723、724、743 R815、824、861、862 CARBON RES RT13-1/6W-150Ω-J D10B151J-T RDB151J-NAAT R815A、848、852 CARBON RES RT13-1/6W-180Ω-J D10B181J-T RDB181J-NAAT R353 CARBON RES RT13-1/6W-220Ω-J D10B221J-T RDB221J-NAAT R311、917、927、937 CARBON RES RT13-1/6W-300Ω-J D10B301J-T RDB301J-NAAT R913、923、933 CARBON RES RT13-1/6W-330Ω-J D10B331J-T RDB331J-NAAT R805、916、926、936 Model No: 14THS3/CE.doc Version 1.0...
  • Page 45 D10B272J-T RDB272J-NAAT R321 CARBON RES RT13-1/6W-3.3KΩ-J D10B332J-T RDB332J-NAAT R310、721、722、728、735 R736、737、741、742 CARBON RES RT13-1/6W-3.9KΩ-J D10B392J-T RDB392J-NAAT R455、462 CARBON RES RT13-1/6W-4.7KΩ-J D10B472J-T RDB472J-NAAT R131、133、154、158、306 R309、360、362、733、731 CARBON RES RT13-1/6W-5.6KΩ-J D10B562J-T RDB562J-NAAT R370、540、1511 CARBON RES RT13-1/6W-8.2KΩ-J D10B822J-T RDB822J-NAAT R153A、157A Model No: 14THS3/CE.doc Version 1.0...
  • Page 46 CARBON RES RT13-1/6W-82KΩ-J D10B823J-T RDB823J-NAAT R314 CARBON RES RT13-1/6W-100KΩ-J D10B104J-T RDB104J-NAAT R350、483、802A、803A、807 CARBON RES RT13-1/6W-150KΩ-J D10B154J-T RDB154J-NAAT R318 CARBON RES RT13-1/6W-270KΩ-J D10B274J-T RDB274J-NAAT R174 CARBON RES RT13-1/6W-560KΩ-J D10B564J-T RDB564J-NAAT R465 CARBON RES RT14-1/4W-1.0Ω-J D10C1R0J-T RDC1R0J-NABT R404 Model No: 14THS3/CE.doc Version 1.0...
  • Page 47 CARBON RES RT15-1/2W-1KΩ-J D10D102J-T RDD102J-NACT R453 CARBON RES RT15-1/2W-47KΩ-J D10D473J-T RDD473J-NACTD R1555 CARBON RES RT15-1/2W-120KΩ-J D10D124J-T RDD124J-NACTD R507、1520、 FUSE RES RF10-1/2W-1.0Ω-J F10D1R0J-C RFD1R0J4ACCN R473B FUSE RES RF10-1W-0.27Ω-J R165、 FUSE RES RF10-1W-0.47Ω-J R470、472、555、565 FUSE RES RF10-1W-1Ω-J R566 Model No: 14THS3/CE.doc Version 1.0...
  • Page 48 C10D246K-T RGDX246K-03N R519 DH1180M001- Thermal RES PTC MZ72 180HM P10X180J-C PS501 WIRE RES RX27-3A-5W-1.8Ω-K W10J1R8K RWH1R8K5AF-N XR502 WIRE RES RXG6-5W-3.9Ω-K W11H3R9K RWH3R9K4AK-N R458 RWH270K7AJ- WIRE RES RX27-5W-27Ω-K W11H270K R1524 WIRE RES RX27-3A-5W-68Ω-K W11H680K RWH680K4AK-N R504 Model No: 14THS3/CE.doc Version 1.0...
  • Page 49 C2BF222K-T CKF222K1BA-F C335 CERAMIC CAPA. CT1-06A-2B4-63V-4700pF-K C2BF472K-T CKF472K1BA-F C324、336 C162、302、309、312、313 CERAMIC CAPA. CT1-08A-2F4-63V-0.01uF-Z C2FF103Z-T CKF103Z1FA-F C332、362、472、475、535 C703A、723、744、752、756 CERAMIC CAPA. CT1-08C-2B4-500V-220pF-K C2BP221K-T CKP221K1BA-N C405 CERAMIC CAPA. CT1-08C-2B4-500V-1000pF-K C2BP102K-T CKP102K1BA-F C452 CERAMIC CAPA. CT1-08C-2B4-500V-3900pF-K C2BP392K-T CKP392K1BA-F C451 Model No: 14THS3/CE.doc Version 1.0...
  • Page 50 Electrolytic Capa. CD110-16V-47uF -M E20C470M-T CEC470MYACAN C723A、811、823 Electrolytic Capa. CD110-16V-100uF -M E20C101M-T CEC101MYACBN C361、743 Electrolytic Capa. CD110-16V-470uF -M E20C471M-T CEC471MYACCN C525、532、801 Electrolytic Capa. CD110-25V-100uF -M E20D101M CED101MYACBN C406、471、471A、474、474A Electrolytic Capa. CD110-25V-470uF -M E20D471M CED471MYACBN C161 Model No: 14THS3/CE.doc Version 1.0...
  • Page 51 Electrolytic Capa. CD110-160V-10uF -M E20H100M CEH100M1ACEN C458 Electrolytic Capa. CD288-160V-100uF -M E20H101M CEH101M2ECKN C528B Electrolytic Capa. CD288H-250V-10uF-M E21K100M CEK100M1ACHN C477、941 Electrolytic Capa. CD293-400V-150uF-±10% C507 FILM CAPA CL11-50V/63V-0.1uF-K F20F104K-T CAY104K1-H-F C326、338、365、411 FILM CAPA CL11-50V/63V-0.22uF-K F20F224K-T CAY224K1-H-F C331(MI)、334、404 Model No: 14THS3/CE.doc Version 1.0...
  • Page 52 LGA0204-3.9uH-K L2X239K-T LBA3R9K----T L351 INDUCTOR LGA0204-1uH-K L2X210K-T LBA1R0K----T L302 INDUCTOR LGA0307-10uH-K L3X2100K-T LBB100K----T L331、361、751、752、753 INDUCTOR LGA0307-22uH-K L3X2220K-T LBB220K-----T L401 INDUCTOR LGA0307-82uH-K L3X2820K-T LBB820K-----T L911、912、913 INDUCTOR Magnetic Coil LEA001-5----N L450 PHOTO COUPLE PC817B/C RX0001XX NLTV817B----N N504 Model No: 14THS3/CE.doc Version 1.0...
  • Page 53 DIODE ZENER HZ22-2 DZHZ22-2---T VD481 DIODE ZENER HZ3C3 DZHZ3C3-----T VD564 DIODE ZENER HZ6C2 DZHZ6C2----TD VD1561 DIODE ZENER HZ7C1 DZHZ7C1----T VD381、382、383、1519 DIODE ZENER HZ9A3 DZHZ9A3----T VD460、483、822 VD861A、941 AN7522N NAN7522N---N N161 TDA9370 NTDA9381---N N301 MC7805CT/L7805 NMC7805CT---N N505 Model No: 14THS3/CE.doc Version 1.0...
  • Page 54 QBF422----NN V912、922、932 QKSC1674C- TRANSISTOR KSC1674C/KTC3192 RXC1674X-T V308 QKSC2383- TRANSISTOR 2SC2383-O/KTC3228-O RXC2383X-T V450 TRANSISTOR 2SC2330/2SC2482 RXC2482X QKSC2330-YNN V911、921、931 TRANSISTOR 2SC3807-CTV-YA RXC3807X Q2SC3807-CBN V1512 TRANSISTOR 2SC2498/5586 V1513 TRANSISTOR TT2140/2SC5885/TT2190LS QTT2140---BN V451 RXC2140X TRANSISTOR PH2369/KTN2369 QPH2369---NN V701 PXC2369X Model No: 14THS3/CE.doc Version 1.0...
  • Page 55 Z301 2966 FUSE 3.15A 250V FXXX0020 FBA3154S02C F501 KDC-A11 K501 POWER SW BXATB066---- TUNER 5V 38.9M 470M A101 Crystal Oscillator 12.0MHz（18P） XX-021------N X761 REMOTE RECEIVER HS0038A2/AT138A U701 DIODE LED (Red)Ф5 VD775 Connector TJC3-5P-5P-400mm LXXX0132 XS402---XS902A Model No: 14THS3/CE.doc Version 1.0...
  • Page 56 LINE FILTER A-LF0011 LFXX0011 LG-011-----N L501 H FBT 21″BSC24-0103Q 西联 TF-0070----0U T451 SW-TRANS 利通:TM-0076--0L T501 H-DRIVER A-TX0040 TXXX0040 TD-0004---0L T450 PX20030---- MAIN PCB PX2--0030----1C MB0X0011-- FUSE SOCKET FGXX0011G F501a、F501b MB1X0196--- Radiator HEATSINK FOR H.V H-V451 Model No: 14THS3/CE.doc Version 1.0...
  • Page 57 HEATSINK FOR 5V H-N503 MB1X0154---- Radiator HEATSINK FOR POWER H-N501 MB1X0113---- Radiator HEATSINK FOR SOUND H-N161 TESTING POINT TJC2-1A PTSX0010 XS904A SCREW ST3*８ N505 SCREW M2.5*12 N401 SCREW M3*10 SCXX0020 N161a、N161b V451、V1513、N503 M3 NUT SXN1A30--FF N401、161a、161b、503、V451、1513 Model No: 14THS3/CE.doc Version 1.0...
  • Page 58 Parts Code Parts Code Mica Slice Isolate The Washer W011、265、266、391、486、 JUMPER 5 mm LXXX0101 W791、929、 JUMPER LXXX0110 W582、683、684 W021，051，131、168、231 W242、243、244、245、264 W311*、356、358、368、373 W381、385、442、443、466 W467、471、493、501、531 W532、552、553、554、555 JUMPER 7.5 mm LXXX0102 W562、563、564、581、652 W662、663、721、760、762 W763、764、771、773、774 W786、821、841、861、862 W863、875、876、881、902 W491、685、675 R358 Model No: 14THS3/CE.doc Version 1.0...
  • Page 59 W159、166、171、213*、214* W241、251、263、312*、313* W341、342、343、361、421 JUMPER 10 mm LXXX0103 W435、472、484、485、571 W535、643、650、653、655 W741、751、752、900、921 W922 W142、253、432、454、551 W621、665、673、674、681 JUMPER 12.5 mm LXXX0104 W682、731、781、872、873 W930 W162、163、164、221、331 W355、369、411、434、451 W452、453、463、464、465 JUMPER 15 mm LXXX0105 W641、642、644、656、672 W840、492 R520、R508 JUMPER 17.5 mm LXXX0106 W362、363、364、365、366 W367、461、462、671、761 Model No: 14THS3/CE.doc Version 1.0...
  • Page 60 JUMPER 20 mm LXXX0107 W156、481、561、661、664 Model No: 14THS3/CE.doc Version 1.0...
  • Page 61 RDB202J- CARBON RES RT13-1/6W-2KΩ-J NAAT R1007 D10B272J- RDB272J- CARBON RES RT13-1/6W-2.7KΩ-J NAAT R1004 D10B512J- RDB512J- CARBON RES RT13-1/6W-5.1KΩ-J NAAT R1003 D10B682J- RDB682J- CARBON RES RT13-1/6W-6.8KΩ-J NAAT R1010 KFC-A06-C-1- PUSH ） L(9.5mm) SW1001、SW1002 SW.Ⅰ(stand SW1003、SW1004、 SW1005、SW1006 Model No: 14THS3/CE.doc Version 1.0...
  • Page 62 Connector XZ1001 TJC3-2P-2Y-800mm 21" KEY PCB AKPA21005-K Model No: 14THS3/CE.doc Version 1.0...
  • Page 63 COMPONENT PARTS LIST (AV Board） Components EASTKIT EAST KIT Q'TY Parts Location Name Specification Parts Code Parts Code AV SOCKET TX2--ZA2（不带开关）黄色 XZ1002 AV SOCKET TX2--ZA2（不带开关）红色 XZ1003 AV SOCKET TX2--ZA2（不带开关）白色 XZ1004 Connector TJC3-5P-5Y-350mm XZ1005 AKPA14/21005-AV 21″AV-PCB Model No: 14THS3/CE.doc Version 1.0...

  • Page 64: Circuit Diagram

    CIRCUIT DIAGRAM Model No:14THS3/CE..doc Version 1.0...

Table of Contents