Benutzeranleitung / Produktwartung WP-895F des Produzenten Daewoo
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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.
- 1 - Contents 1 - Main features ............................................................................................................. . .......................................... 4 1-1 Specifications ..........................................
- 2 - 4-5-2 T D A8358J .............................................................................................................................. . .............. . 3 3 4-6 T D A6107 Q ..............................................................
Fo - 3 - 5-4-1 Introduction .............................................................................................................. .. ........................... 4 9 5-4-2 C P U .................................................................
- 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.
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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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).
- 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 .
- 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 .
- 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.
- 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 .
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.
- 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.
- 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 .
- 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.
- 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.
- 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.
- 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 C.
- 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.
- 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.
- 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 .
- 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.
- 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 .
- 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.
- 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 .
- 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.
- 31 - Service manual WP 895/895F, CP885/885F Block diagram TDA8944J.
- 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 .
- 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.
- 34 - Service manual WP 895/895F, CP885/885F.
- 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 .
- 36 - Service manual WP 895/895F, CP885/885F Block diagram TDA6107Q.
- 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.
- 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.
- 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 So.
- 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.
- 41 - Service manual WP 895 /895F, CP885/885F 5 - Circuit description 5-1 Block diagram.
- 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.
- 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.
- 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 .
- 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.
- 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.
- 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 .
- 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.
- 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.
- 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 ’).
- 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 .
- 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.
- 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 .
- 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/Finnis.
- 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).
- 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) .
- 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.
- 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.
- 59 - Service manual WP 895/895F, CP885/885F 5-9-2-2 STR-F6654 oscillating operation.
- 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.
- 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.
- 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.
- 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.
- 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).
- 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.
- 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 .
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.
- 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.
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.
- 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.
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 CCZB1H10.
- 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.
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.
- 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-.
Se r vice Ma n ual WP-895/895F, CP885/885F - 75 - 7. Exploded View 7-1 D WX-28W5.
Service Man ual WP-895/895F, CP885/885F - 76 - 7. Exploded View 7-2 D WF-28W8.
Service Manual WP-895/895F, CP885/885F - 77 - 7. Exploded View 7-3 D TF-29U8.
Ser vice Man ual WP-895/895F, CP885/885F - 78 - 7. Exploded Vie w 7-4 D TP-28A7.
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.
Se r vice Ma n ua l WP-895/895F, CP885/885F - 80 - 7 . Explode d Vi e w 7-6 D TP-28G7.
Service Manual WP-895/895F, CP885/885F -8 1 - 7. Exploded View 7-7 D TP -28G8.
PRINTED CIRCUIT BOARD PCB MAIN.
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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.
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