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Daewoo WP-895 manual

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Table of contents for the manual

  • Page 1

    Ser vice Manual S/M No. : TWP895BEF0 D AEW OO ELECTRONICS CO ., L TD http : //svc.d w e .c o .kr AUG . 2001 Colour T ele vision CHASSIS WP-895 WP-895F CP-885 CP-885F[...]

  • Page 2

    - 1 - Contents 1 - Main features ............................................................................................................. . .......................................... 4 1-1 Specifications ............................................................................................................ . ..............................[...]

  • Page 3

    - 2 - 4-5-2 T D A8358J .............................................................................................................................. . .............. . 3 3 4-6 T D A6107 Q .................................................................................................................. . ...................................... . 3 4[...]

  • Page 4

    Fo - 3 - 5-4-1 Introduction .............................................................................................................. .. ........................... 4 9 5-4-2 C P U ....................................................................................................................... .. ............................. 4 9 .......[...]

  • Page 5

    - 4 - Service manual WP 895/895F, CP885/885F 1- Main F e a tu r es 1-1 Speci f ications TV standard P AL - SECAM B/G D/K, P AL I/I, SECAM L/ L ’ Sound system NICAM B/G, I, D/K, L, FM 2Carrier B/G, D/K P o wer consumption 21” Real Falt : 59 W approx. 28” 4:3, FST : 69 W approx. Sound Output P o w e r 21” : 4.5W x 2 (at 1kHz, 60% mod, 10%THD)[...]

  • Page 6

    CHASSIS NAME WP895 WP895F CP885 CP885F VCT VERSION 3834 3834 3832 3834 SOFTWARE VERSION A A B A REMOTE CONTROL R46G22 R46G22 R46G22 R46G22 PCB SERIAL NUMBER 4859805093 4859805193 4859805093 4859805193 TUBE 16:09 16:9 REAL FLAT 4:03 4:3 REAL FLAT SVHS3 "PICTURE IMPROVE- MENTS, COMB FILTER, HORIZONTAL SCALER" TELETEXT SPLIT SCREEN FORMATS A[...]

  • Page 7

    - 6 - Service manual WP 895/895F, CP885/885F 21 Pin EU R O-SCA R T 1 : Pin Signal Description Mat c hing v alue 1 Audi o Output Right 0. 5 Vrms, Impedance < 1 , ( RF 54% Mod ) 2 Audio Input Right 0. 5 Vrms, Impedance > 10 3 Audi o Outpu t Left 0. 5 Vrms, Impedance < 1 , ( RF 54% Mod ) 4 Audio Earth 5 Blue Earth 6 Audio Input Left 0. 5 Vrms[...]

  • Page 8

    - 7 - Service manual WP 895/895F, CP885/885F 1 9 V ide o Output 1 Vpp 3dB, Impedance 75 ( Monitor output ) - Not available for cp885 2 0 V ideo Input , Y In. 1 Vpp 3dB, Impedance 75 2 1 Common Earth[...]

  • Page 9

    - 8 - Service manual WP 895/895F, CP885/885F CH EUR OPE CCIR FRANCE GB(IRELAND) EAST OIR T C01 46.25 - 47.75 49.75 C02 48.25 55.75 (L ’) 53.75 59.25 C03 55.25 60.5 (L ’) 61.75 77.25 C04 62.25 63.75 (L ’) 175.25 85.25 C05 175.25 176.00 183.25 93.25 C06 182.25 184.00 191.25 175.25 C07 189.25 192.00 199.25 183.25 C08 196.25 200.00 207.25 191.25 [...]

  • Page 10

    - 9 - Service manual WP 895/895F, CP885/885F CH EUR OPE CCIR FRANCE GB(IRELAND) EAST OIR T C42 639.25 639.25 639.25 639.25 C43 647.25 647.25 647.25 647.25 C44 655.25 655.25 655.25 655.25 C45 663.25 663.25 663.25 663.25 C46 671.25 671.25 671.25 671.25 C47 679.25 679.25 679.25 679.25 C48 687.25 687.25 687.25 687.25 C49 695.25 695.25 695.25 695.25 C50[...]

  • Page 11

    - 10 - Service manual WP 895/895F, CP885/885F CH EUR OPE CCIR FRANCE GB(IRELAND) EAST OIR T S10 168.25 212.75 - 168.25 S11 231.25 224.75 - 231.25 S12 238.25 236.75 - 238.25 S13 245.25 248.75 255.25 245.25 S14 252.25 260.75 263.25 252.25 S15 259.25 272.75 271.25 259.25 S16 266.25 284.75 279.25 266.25 S17 273.25 296.75 287.25 273.25 S18 280.25 136.00[...]

  • Page 12

    - 11 - Service manual WP 895/895F, CP885/885F 1- 3 A TSS sorting method Th e TV set s w eeps all th e TV bands from b e ginning o f VHF to end of UH F . T h e TV controlling soft w are for each pr o gram checks if a VPS CNI code is transmitted ( this system e xists f or Ge r man, Swiss an d Austrian transmissions). If n o VPS CNI code is foun d , t[...]

  • Page 13

    - 12 - Service manual WP 895/895F, CP885/885F The so r ting order within group II, III, and IV is based on the channel frequenc y . The Pr o g ram with the l o west frequency is allocated the fi rst rank in its group, and so f o rth until the last program of the group which has the highest f r equenc y . If F rance is selected, th e TV controlling [...]

  • Page 14

    - 13 - Service manual WP 895/895F, CP885/885F 2 - Safety instruction W ARNING: Only competent service personnel may ca r ry out work i n v olving the testing or r epair of this equipment. X-R A Y RADI A TION PREC A UTION 1 . Excess i v e high v oltage can produce potentially hazardous X-R A Y RADI A TION . T o a v oid such hazards, the high v olt a[...]

  • Page 15

    - 14 - Service manual WP 895/895F, CP885/885F 3 - Alignment instructions 3-1 Mic r ocontroller con f iguration : Service mode T o swit c h th e TV set into service mode please see instruction bel o w . 1 - Select pr. number 91 2 - Adjust sha r pness to mini m um and e xit all menu. 3 - Qui c k l y press the k e y sequence : RED - GREEN - menu T o s[...]

  • Page 16

    - 15 - Service manual WP 895/895F, CP885/885F 3-3 Microcontroller con f iguration : Option bits T hese option bits are a v aila b le from Se r vice mode. F i rst f ind the OPTION cont r ol, and then use k e ys 0...7 on the r emote k e ypad to control bits 0 to 7 respect i v el y . T he ta b le bel o w sh o ws the options a v aila b le ; B7 B6 B5 B4[...]

  • Page 17

    HOR PARAL H BOW HOR WIDTH PARAROLA 3-4-6- Horizontal picture centring Adjust HOR CEN(Horizontal center) to have the picture in the center of the screen. 3-4-7- Eau/West comection Adjust the PARABOLA, HOR WIDTH, CORNER, HOR PARAL, EW TRAPE Z , H BOW, to compensate for geometrical distorrin, Service manual WP 895 /895F, CP885/885F - 16 - For HOR WIDT[...]

  • Page 18

    - 17 - Service manual WP 895/895F, CP885/885F CORNER EW TRAPEZ 3-4-8- A GC - Adjust the antenna signal le vel at 70 dB V 2 - T une a colour bar pattern. - Find the “ A GC” item in service mode. - Adjust A GC v olume ( RB10 ) to bring the cursor to central position : 32.[...]

  • Page 19

    - 18 - Service manual WP 895/895F, CP885/885F 4 - IC description 4-1 VCT383XA TV signal processor - T eletext decoder with embedded 8 bit - Controller . 4-1-1- Block diagram of the VCT 4-1-2- TV -signal Processor • Four composite video inputs, two S-VHS inputs • Analogue YC r C b input • Composite video monitor • Multistandard colour decode[...]

  • Page 20

    - 19 - Service manual WP 895/895F, CP885/885F • Horizontal scaling ( 0.25 to 4 ) • P anoram a vision • Black-l e v el e xpander • Dynamic peaking • Soft limiter (gamma correction) • Colour transient impr o v ement • Programmable RGB matrix • Analogu e RGB/ F astblan k input • Half-contrast switch • Picture frame generator • Sc[...]

  • Page 21

    - 20 - Service manual WP 895/895F, CP885/885F • High-l e v el command language • FLOF ( F ast e xt), an d T OP support • 10 pages memory on chip (10kB) 4-1-5- Display OSD Features • 3kB OSD RAM on chip • WST l e v el 1.5 compliant • WST l e v el 2 parallel att r i b utes • 32 for e ground/backg r ound colours • programmable colour l[...]

  • Page 22

    - 21 - Service manual WP 895/895F, CP885/885F IC marking English, French, German, Italian, Spanish, Dutch, Danish, Finnish, Norw e gian, Swedish, Greek, Polish, Hungarian, Czech, Sl o v akian, Romanian, Russian. • I n v entory of transmitte d T elet e xt pages stored in the P age T able • Signal quality detector fo r WST data • Comprehens i v[...]

  • Page 23

    - 22 - Service manual WP 895/895F, CP885/885F 14 GND AF SUPPL Y G round, Analo g Front-end 15 VSUP AF SUPPL Y Supply V oltage, Analog Front-end 16 CBIN IN Analog Component Cb Input 17 CIN1 IN Analog Chroma 1 Input 18 CIN2/CRIN IN Analog Chroma 2 Input / Analog Component Cr Input 19 VIN1 IN Analog V ideo 1 Input 20 VIN2 IN Analog V ideo 2 Input 21 V[...]

  • Page 24

    - 23 - Service manual WP 895/895F, CP885/885F OCP 64 63 62 61 60 58 57 56 55 48 46 45 44 43 42 41 40 39 38 37 36 34 35 33 47 54 53 52 51 50 49 59 KB LED MUTE SDA SCL RESET XTAL in OSC GND GND S/B 3.3V GND GND GND XREF VRD GND 5V B out G out R out SVM out RSW2 RSW1 GND SENSE EW VERTQ VERT HFLB Power 1 2 3 4 5 7 8 9 10 17 19 20 21 22 23 24 25 26 27 2[...]

  • Page 25

    - 24 - Service manual WP 895/895F, CP885/885F 4-2 MSP341x Multistandard Sound Processor The MSP 341x is designed as a single-chip Multistanda r d Sound P r ocessor for applications in anal o gue and digita l TV sets, video recorders, and PC cards. The MSP3411 has all functions of MSP3410 with the addition of a virtual surround sound feature. A Su r[...]

  • Page 26

    - 25 - Service manual WP 895/895F, CP885/885F - high d e viation FM-mono mode (max. d e viation: approx. ±360 kHz) 4-2-1-2 DSP-Section ( A udio Baseband P r ocessing) - fl e xible selection of audio sources to be processed - performance of terrestrial de-emphasise systems (FM, NICAM) - digitally performed FM-identi f ication decoding and de-mat r [...]

  • Page 27

    - 26 - Service manual WP 895/895F, CP885/885F TV standards TV Position of sound Sound modulation Color system Country system carrier (MHz) B/G 5.5 / 5.7421875 FM Stereo P A L Germ any B/G 5.5 / 5.85 FM-Mono / NICAM P AL Scandina via, Spain L 6.5 / 5.85 AM-Mono / NICAM SECAM-L France I 6.0 / 6.552 FM-Mono / NICAM P A L U K D/ K 6.5 / 6.2578125 D/K1 [...]

  • Page 28

    - 27 - Service manual WP 895/895F, CP885/885F 12 T P In / Out T est pin 13 T P Out T est pin 14 N C Not Connected 15 T P Out T est pin 16 T P Out T est pin 17 T P Out T est pin 18 D VSUP Di g ital po wer supply +5V 19 D V S S Digital Ground 20 N C Not Connected 21 N C Not Connected 22 N C Not Connected 23 N C Not Connected 24 RESETQ In Power -On-re[...]

  • Page 29

    - 28 - Service manual WP 895/895F, CP885/885F Pin No. Pin Name T ype Short description 59 A N A_IN1- In IF common 60 N C Not Connected 61 TESTEN In T est pin 62 XT AL_IN In Crystal oscillator 63 XT AL_OUT Out Crystal oscillator 64 N C T est pin 4-3 TD A 4470-Multistandard V ideo-IF and Quasi Parallel Sound Processor 4-3-1- Description The TD A 4470[...]

  • Page 30

    - 29 - Service manual WP 895/895F, CP885 / 885F Pin Symbol Function 19 V SW AFC switch 20, 21 V VCO VCO circuit 22 V AFC AFC output 23 V S Supply v oltage 24 V O, FM Intercarrier output 25 V O, AM AF output-AM sound 26 R COMP Of fset compensation 27, 28 V i,SIF2 SIF2 input (symmetrical) 4-3-4 Block diagram Offset 26 18 20 21 14 VCO l' switch V[...]

  • Page 31

    - 30 - Service manual WP 895/895F, CP885/885F Pin Symbol Description 1 OUT1- n e g a t i v e loudspea k er terminal 1 2 GND1 ground channel 1 3 Vcc1 supply v olt a ge channel 1 4 OUT1+ posit i v e loudspeaker terminal 1 5 n.c. not connected 6 IN1+ poit i v e input1 7 n.c. not connected 8 IN1- n e g a t i v e input1 9 IN2- n e g a t i v e input2 10 [...]

  • Page 32

    - 31 - Service manual WP 895/895F, CP885/885F Block diagram TDA8944J[...]

  • Page 33

    - 32 - Service manual WP 895/895F, CP885/885F 4- 5 T D A835xJ V ertical Ampli f ier Th e T D A835xJ are p o wer circuit for use in 90 o and 110 o colour deflection systems for f ield frequencies of 25 to 200Hz and 16/9 picture tubes . The circuit pr o vides a DC dr i v en v ertical de f lection output circuit, operating as a highly e f f icient c l[...]

  • Page 34

    - 33 - Service manual WP 895/895F, CP885/885F 4-5-2 TD A8358J An East-W est output stage is provided that is able to sink current from the diode modulator circuit. Features : - Fe w external components - Highly ef f icient fully DC-coupled vertical output bridge circuit - Short rise and fall time of the v ertical flyback switch - Guard circuit - T [...]

  • Page 35

    - 34 - Service manual WP 895/895F, CP885/885F[...]

  • Page 36

    - 35 - Service manual WP 895/895F, CP885/885F 4-6 TD A6107Q The T D A6107Q includes three video output amplif iers in one plastic DIL-Bent-SIL 9-pin medium po wer package, using high v oltage DMOS technology , and is intended to dri v e the three cathodes of a colour CR T directly . T o obtain maximum performance, the amplifier should be used with [...]

  • Page 37

    - 36 - Service manual WP 895/895F, CP885/885F Block diagram TDA6107Q[...]

  • Page 38

    - 37 - Service manual WP 895/895F, CP885/885F 4-6 24C16 - 16 Kb EEPR O M features : - 16 Kbit serial I2C b us EEPR OM - Single supply v oltage : 4.5 V to 5.5 V - 1 Million Erase/Write cycles (minimum) - 40 year data retention (minimum) Pin description Pin No. Name Description 1, 2, 3 E0, E1, E2 D e vice address - not used 5 SDA Serral Data/Address [...]

  • Page 39

    - 38 - Service manual WP 895/895F, CP885/885F 4-8 STR - F6653 4-8-1 General description The STR-F6653 is an hybrid IC with a b uild-in MOSFET and control IC, designed for f lyback con ve rter type s witch mode po wer supply applications. 4-8-2 Features - Small SIP fully isolated molded 5 pins package - Many protection functions : * Pulse-by-pulse o[...]

  • Page 40

    - 39 - Service manual WP 895/895F, CP885/885F 4-8-4 Pins description pin name symbol description 1 Ov ercurrent / feedback O.C.P./ F.B. Input of ov er current detection signal and feedback signal 2 Sourc e S MOSFET source 3 Drain D MOSFET drain 4 Supply V IN Input of po wer supply for control circuit 5 Ground GN D Ground 4-8-5 Control part electric[...]

  • Page 41

    - 40 - Service manual WP 895/895F, CP885/885F DESCRIPTION 4-7-6 MOSFET electrical characteristics IC PINS RA TING NUMBER MIN. TYPE MAX Drain-to-source break 3-2 V DSS 650 - - V voltage Drain leakage current 3-2 I DSS - - 300 A On-resistance 3-2 R DS (on) - - 1.95 Switching time 3-2 tf - - 2 50 noec Thermal resistance - O CH -F - - 0.95 0 C/W SYMBOL[...]

  • Page 42

    - 41 - Service manual WP 895 /895F, CP885/885F 5 - Circuit description 5-1 Block diagram[...]

  • Page 43

    - 42 - Service manual WP 895/895F, CP885/885F 5-2 IF section 5-2-1 Block diagram The video IF signal (VIF) is fed through a SAW filter to the differential input (Pin 6-7) of the VIF amplifier. 5-2-2 Vision IF Amplifier This amplifier consists of three AC-coupled amplifier stages. Each differential amplifier is gain controlled by the automatic gain [...]

  • Page 44

    - 43 - Service manual WP 895/895F, CP885/885F S A W f ilters Ref. Standard F eatu r es K3953M B/G - D/K - I - L/ L ’ - I F f ilte r f o r vide o application - TV IF f ilter with Nyquist slopes at 33.9 MHz and 38.9 MHz - Constant group delay K9650M B/G - D/K - I - L/ L ’ - I F f ilte r f o r audi o application - TV IF audio f ilter with two chan[...]

  • Page 45

    - 44 - Service manual WP 895/895F, CP885/885F 5-2- 5 V ideo Demodulation an d Ampli f ier The video IF signal , whi c h is a pplied f r om the g ain controlled IF ampli f ie r , is multiplied with the in-phase component of th e VCO signal . The video demodulator is designed for l o w disto r tion and la r ge bandwidth . The demodulator output signa[...]

  • Page 46

    - 45 - Service manual WP 895/895F, CP885/885F 5-3 V ideo - VCT description 5-3-1 Introduction The VCT 38xxA includes complete video, display , and deflection processing. All processing is done digitally , the video front-end and video back-end are interfacing to the analogue w or ld. Most functions can be controlled by softw ar e via I 2 C b us sla[...]

  • Page 47

    - 46 - Service manual WP 895/895F, CP885/885F 5-3-8 Adaptiv e Comb Filter (VCT3834A only) The adaptiv e comb filter is used for high-quality luminance/chrominance separation for P AL or NTSC signals. The comb f ilter impr ov es the luminance resolution (bandwidth) and reduces interferences like cross-luminance and cross-color artefacts. The adapti [...]

  • Page 48

    - 47 - Service manual WP 895/895F, CP885/885F 5-3-11 V ideo Sync Processing T o extract the sync information from the video signal, a linear phase lo w-pass f ilter eliminates all noise and video contents abov e 1 MHz. The sync is separa ted by a slicer; the sync phase is measured . A variable windo w can be selected to improv e the noise immunity [...]

  • Page 49

    - 48 - Service manual WP 895/895F, CP885/885F 5-3-15 CR T Measurement and Control The display processor is equipped with an 8-bit ADC for all measuring purposes. The ADC is connected to the SENSE input pin. Cutoff and white-dri ve curr ent measur ement are carried out during the v ertical blanking interval. 5-3-16 A v erage Beam Current Limiter The[...]

  • Page 50

    - 49 - Service manual WP 895/895F, CP885/885F 5-3-20 EHT Compensation The v ertical w a v e f orm can be scaled according to the a v erage beam cu r rent . T his is used to compensate the e f fects of electric high-tension c han g es due to beam current v ariations. EHT compensation for East/ W est deflection is done with an o f fset corresponding [...]

  • Page 51

    - 50 - Service manual WP 895/895F, CP885/885F conf igur ation Stand by T V O N 1 P ower Push Pull Lo w Push Pull High Switch OFF / ON SMPS 2 AGC High impedance High impedance T uner A GC lev el input – For f actory use only 5 Mod SW High impedance Push Pull High = Negati ve modulation, Lo w = Positiv e modulation (L/L ’). 6 SECAM L ’ High imp[...]

  • Page 52

    - 51 - Service manual WP 895/895F, CP885/885F Format Zoom factor – TV with Description Application Name(OSD) 16:9 CR T V ertical Horizontal 4:3 100% 75% Picture is centred with Standard 4/3 picture with black bars at the left 576 activ e lines and right hand side of the display 14:9 114% 87% Picture is centred with 14:9 picture – letter box bla[...]

  • Page 53

    - 52 - Service manual WP 895/895F, CP885/885F The follo wing schematic, illustrates the logic of control for the two SCAR T connectors. The terms used in the schematic are described belo w ; 1. A U TO represents a situation where the television has self-selected its picture source. This could be when the SCAR T SLO W SWITCHING pin has gone to a hig[...]

  • Page 54

    - 53 - Service manual WP 895/895F, CP885/885F can a l ways be o v e r ridden b y the user after the e v ent. Each line on the diagram, with its associated t e xt, r e presents the e xact conditions under which the change of state will occu r . Sometimes this will be accompanied by another action which will be automatically per f ormed by the tel e [...]

  • Page 55

    - 54 - Service manual WP 895/895F, CP885/885F OSD Language C C C T elete xt Language ESC Mapping 12 13 14 T elete xt Language 0 0 0 English English Latin 0 0 1 German German Latin 0 1 0 Swedish/Finnish Swedish/Finnish Latin 0 1 1 Italian Italian Latin 1 0 0 French French Latin 1 0 1 Spanish Spanish Latin 1 1 0 T urkish T urkish Latin 1 1 1 English [...]

  • Page 56

    - 55 - Service manual WP 895/895F, CP885/885F 5-6-4 NICAM decoder In case of NICAM - mode, the phase samples are decoded accor ding the DQPSK - coding scheme. The output of this block contains the original NICAM bitstream. 5-6-5 DSP section All audio baseband functions are performed by digital signal processing (DSP). The DSP section controls the s[...]

  • Page 57

    - 56 - Service manual WP 895/895F, CP885/885F 5-7-2 Mode selection Th e T D A894xJ has s e v eral functional modes, which can be selected by applying the proper DC v oltage to pin MODE. Mute : In this mode the ampli f ier is DC biased b ut not operational (no audio output) . This all o ws the input coupling capacitors to be cha r ged to a v oid pop[...]

  • Page 58

    - 57 - Service manual WP 895/895F, CP885/885F 5-9 Po wer supply (STR F6654) 5-9-1 STR-F6654 general description The STR-F6654 is an hybrid IC with a b uild-in MOSFET and control IC, designed for flyback con verter type switch mode po wer supply applications. 5-9-2 P ower supply primary part operations An oscillator generates pulses signals which tu[...]

  • Page 59

    - 58 - Service manual WP 895/895F, CP885/885F When the po wer switch is pushed on, V IN increases slo wly . During this time, C806 is char g ed through R802. As soon as V IN reaches 16V , the STR-F6654 control circuit starts operating. Then, V IN is obtained by smoothing the winding v oltage w hich appears between pin6 and pin7 of the SMPS transfor[...]

  • Page 60

    - 59 - Service manual WP 895/895F, CP885/885F 5-9-2-2 STR-F6654 oscillating operation[...]

  • Page 61

    - 60 - Service manual WP 895/895F, CP885/885F When the MOSFET is ON, the STR-F6654 internal capacitor C1 is charged at the constant v oltage 6.5V . At the same time, the v oltag e at pin 1 (OCP / FB) increases with the same wa v ef orm as the MOSFET drain current. When the pin 1 voltage reaches the threshold v oltage V TH1 = 0.73V , the STR-F6654 i[...]

  • Page 62

    - 61 - Service manual WP 895/895F, CP885/885F 5-10 TV start-up, TV normal run and stand by mode operations 5-10-1 TV star t-up operations * Schematic diagram for start-up operations * TV star t-up and micr ocontr oller initialisa tion - When SW801 po wer s witch is pushed, main A C v oltag e is applied to T801 transformer (after r ectif ication by [...]

  • Page 63

    - 62 - Service manual WP 895 /895F, CP885/885F . If the TV set was on normal r un mode before switching of f, the microcontroller deli vers horiz ontal dr i ve v oltage at pin 24 and picture appears on screen. . If the TV set was on stand-by mode before switching of f, the microcontroller switc hes TV set to stand-by mode, decreasing po wer pin vol[...]

  • Page 64

    - 63 - Service manual WP 895/895F, CP885/885F On normal run mode, I501 microcontroller pin 1 (po wer) is set to high • So, I810 contr olled r ectif ier is not conducting - Q809 is conducting. So, Q808 is not conducting and Q807 is conducting - So, Q807 collector is connected to the ground and I810 contr olled rectifier ga te pin is set to low (no[...]

  • Page 65

    - 64 - Service manual WP 895/895F, CP885/885F * po w er suppl y functioning dur ing TV set nor mal r un mode - I801 transmits controlled pulses to T801 which generates DC voltages after rectif ications b y secondary part diodes and electro capacitors (by e xample by D820 and C813 on 143V supply voltage line). - 8V , 5V , 3.3V supply voltage lines h[...]

  • Page 66

    - 65 - Service manual WP 895/895F, CP885/885F 2 4 3 DRAIN I801 MOFS ET AND CONTROL IC 1 MAIN AC VOLTAGE I804 OPTO COUPLER I823 3.3V REGULATOR I703 IR RECEIVER FRONT MAS K BUTTONS I810 CONTROLLED RECTIFIER S WITCHING CIRCUIT T 801 SM PS T R A N S I501 MAIN IC OCP FB D801...D804 GRAETZ BRIDGE 16 D821 I810 controlled rectifier HIGH C841 C840 R713 1 3 [...]

  • Page 67

    - 66 - Service manual WP 895/895F, CP885/885F I810 CONTROLLED RECTIFIER R820 R830 C830 R829 Q 808 6V DC Q 809 Q 807 HIGH HIGH HIGH LOW POWER LOW Fig : I810 controlled rectifier switching circuit * TV set stand-b y mode oper a tions - On stand-by mode, I501 microcontroller pin 1 (po wer) is set to lo w . - So, Q809 collector is set to high. - Then, [...]

  • Page 68

    Se r vice Ma n ual WP-895/895F, CP885/885F - 67 - 6. Ser vice P ar ts List (D WX - 28W5 ) CA UTION “ ” P ar ts recommended for stoc k. “ ® ” Safety critical componen, Replace only with genuine Dea woo saf ety par ts. LOC P ART CODE P AR T NAME DECSCRIPTION REMARK LOC P ART CODE P ART NAME DESCRIPTION REMARK M211 4852158911 CO VER BACK HIPS[...]

  • Page 69

    - 68 - Se r vice Ma n ual WP-895/895F, CP885/885F LOC P ART CODE P AR T NAME DECSCRIPTION REMARK LOC P ART CODE P ART NAME DESCRIPTION REMARK G900 4SG0D00103 SP ARK GAP S-23 900V -1.5KV I101 1TD A4470M- IC IF TD A4470-M I301 1TD A8358J- IC VER TICAL TD A8358J ® I301A 4857028227 HEA T SINK AL EX ANODIZING I301B 7174301011 SCREW T APPTITE TT2 RND 3X[...]

  • Page 70

    Se r vice Ma n ual WP-895/895F, CP885/885F - 69 - LOC P ART CODE P AR T NAME DECSCRIPTION REMARK LOC P ART CODE P ART NAME DESCRIPTION REMARK C156 CBXF1H104Z C CERA SEMI 50V F 0.1MF Z (T APPING) C157 CEXF1H100V C ELECTRO 50V RSS 10MF (5X11) TP C158 CBXF1H104Z C CERA SEMI 50V F 0.1MF Z (T APPING) C164 CEXF1E470V C ELECTRO 25V RSS 47MF (5X11) T P C30[...]

  • Page 71

    - 70 - Se r vice Ma n ual WP-895/895F, CP885/885F LOC P ART CODE P AR T NAME DECSCRIPTION REMARK LOC P ART CODE P ART NAME DESCRIPTION REMARK Q334 T2SC5343Y - TR 2SC5343Y Q402 T2SD1207T - TR 2SD1207-T (T APPING) Q510 T2SC5343Y - TR 2SC5343Y Q511 T2SC5343Y - TR 2SC5343Y Q542 T2SA1980Y - TR 2SA1980Y Q543 T2SA1980Y - TR 2SA1980Y Q544 T2SA1980Y - TR 2S[...]

  • Page 72

    Se r vice Ma n ual WP-895/895F, CP885/885F - 71 - LOC P ART CODE P AR T NAME DECSCRIPTION REMARK LOC P ART CODE P ART NAME DESCRIPTION REMARK CA20 CCZB1H222K C CERA 50V B 2200PF K (AXIAL) CA3 CCZB1H101K C CERA 50V B 100PF K (AXIAL) CA4 CCZB1H102K C CERA 50V B 1000PF K (AXIAL) CA7 CCZB1H471K C CERA 50V B 470PF K (AXIAL) CA8 CCZB1H471K C CERA 50V B 4[...]

  • Page 73

    - 72 - Se r vice Ma n ual WP-895/895F, CP885/885F LOC P ART CODE P AR T NAME DECSCRIPTION REMARK LOC P ART CODE P ART NAME DESCRIPTION REMARK J072 85801065GY WIRE COPPER A WG22 1/0.65 TIN COA TING J073 85801065GY WIRE COPPER A WG22 1/0.65 TIN COA TING J075 85801065GY WIRE COPPER A WG22 1/0.65 TIN COA TING J076 85801065GY WIRE COPPER A WG22 1/0.65 T[...]

  • Page 74

    Se r vice Ma n ual WP-895/895F, CP885/885F - 73 - LOC P ART CODE P AR T NAME DECSCRIPTION REMARK LOC P ART CODE P ART NAME DESCRIPTION REMARK R162 RD-AZ153J- R CARBON FILM 1/6 15K OHM J R163 RD-AZ752J- R CARBON FILM 1/6 7.5K OHM J R164 RD-AZ752J- R CARBON FILM 1/6 7.5K OHM J R177 RD-AZ562J- R CARBON FILM 1/6 5.6K OHM J R190 RD-AZ221J- R CARBON FILM[...]

  • Page 75

    - 74 - Se r vice Ma n ual WP-895/895F, CP885/885F LOC P ART CODE P AR T NAME DECSCRIPTION REMARK LOC P ART CODE P ART NAME DESCRIPTION REMARK R621 RD-AZ102J- R CARBON FILM 1/6 1K OHM J R622 RD-AZ102J- R CARBON FILM 1/6 1K OHM J R641 RD-AZ102J- R CARBON FILM 1/6 1K OHM J R642 RD-AZ102J- R CARBON FILM 1/6 1K OHM J R646 RD-AZ102J- R CARBON FILM 1/6 1K[...]

  • Page 76

    Se r vice Ma n ual WP-895/895F, CP885/885F - 75 - 7. Exploded View 7-1 D WX-28W5[...]

  • Page 77

    Service Man ual WP-895/895F, CP885/885F - 76 - 7. Exploded View 7-2 D WF-28W8[...]

  • Page 78

    Service Manual WP-895/895F, CP885/885F - 77 - 7. Exploded View 7-3 D TF-29U8[...]

  • Page 79

    Ser vice Man ual WP-895/895F, CP885/885F - 78 - 7. Exploded Vie w 7-4 D TP-28A7[...]

  • Page 80

    Se r vice Ma n ua l WP-895/895F, CP885/885F - 7 9 - 7 . Explode d Vi e w 7-5 D TP-28B1[...]

  • Page 81

    Se r vice Ma n ua l WP-895/895F, CP885/885F - 80 - 7 . Explode d Vi e w 7-6 D TP-28G7[...]

  • Page 82

    Service Manual WP-895/895F, CP885/885F -8 1 - 7. Exploded View 7-7 D TP -28G8[...]

  • Page 83

    PRINTED CIRCUIT BOARD PCB MAIN[...]

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    [...]

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    [...]

  • Page 86

    686, AHYEON-DONG MAPO-GU SEOUL, KOREA C.P.O. BOX 8003 SEOUL, KOREA TELEX : DWELEC K28177-8 CABLE : “DAEWOOELEC” E-mail :djkoo@web.dwe.co.kr[...]