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S/M No. : TWP895BEF0
Service Manual
Colour Television
CHASSIS
WP-895
WP-895F
CP-885
CP-885F
DAEWOO ELECTRONICS CO., LTD
http : //svc.dwe.co.kr AUG. 2001
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Service manual WP-895/895F. CP885/885F Contents 1 - Main features ........................................................................................................................................................ 4 1-1 Specifications .................................................................................................................................................. 4 1-2 Channel table ..........................................................................................
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Service ma nual WP-895/895F. CP885/885F 4-5-2 TDA8358J .............................................................................................................................................. 33 4-6 TDA6107Q .......................................................................................................................................................... 34 4-7 24C16 - 16 Kb EEPROM ......................................................................................................
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Service manual WP-895/895F. CP885/885F 5-4-1 Introduction........................................................................................................................................... 49 5-4-2 CPU ...................................................................................................................................................... 49 5-4-3 -Controller I/O pin configuration and function ...............................................................................
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Service manual WP 895/895F, CP885/885F 1- Main Features 1-1 Specifications TV standard PAL - SECAM B/G D/K, PAL I/I, SECAM L/L’ Sound system NICAM B/G, I, D/K, L, FM 2Carrier B/G, D/K Power consumption 21” Real Falt : 59 W approx. 28” 4:3, FST : 69 W approx. 29" 4:3, REAL FALT : 74 W approx . 28” 16:9, WIDE : 69 W approx . Sound Output Power 21” : 4.5W x 2 (at 1kHz, 60% mod, 10%THD) 28”, 29" : 7W x 2 (at 1kHz, 60% mod, 10%THD) Speaker 21” : 7W 8 ohm x2 28”, 29” : 12W 8 ohm x2 Teletext sys
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Service manual WP 895/895F, CP885/885F Specification matrix 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 AVAILABLE IN AUTO / 4:3 / 14:9 / ZOOM 14:9 / AUTO / 4:3 / 14:9 / ZOOM 14:9 / AUTO / FULL SCREEN / 14
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Service manual WP 895/895F, CP885/885F 21 Pin EURO-SCART 1 : Pin Signal Description Matching value 1 Audio Output Right 0.5 Vrms, Impedance < 1 , ( RF 54% Mod ) 2 Audio Input Right 0.5 Vrms, Impedance > 10 3 Audio Output Left 0.5 Vrms, Impedance < 1 , ( RF 54% Mod ) 4 Audio Earth 5 Blue Earth 6 Audio Input Left 0.5 Vrms, Impedance > 10 7 Blue Input 0.7 Vpp ±0.1V, Impedance 75 8 Slow Switching TV : 0 to 2V, AV 16/9 : 4.5 to 7V, AV 4/3 : 9.5 to 12V , Impedance > 10 9 Green Earth 10 N.C. 11 G
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Service manual WP 895/895F, CP885/885F 19 Video Output 1 Vpp 3dB, Impedance 75 ( Monitor output ) - Not available for cp885 20 Video Input, Y In. 1 Vpp 3dB, Impedance 75 21 Common Earth - 7 -
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Service manual WP 895/895F, CP885/885F 1-2 Channel table FREQUENCY TABLE CH EUROPE CCIR FRANCE GB(IRELAND) EAST OIRT 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 C09 203.25 208.00 215.25 199.25 C10 210.25 216.00 223.25 207.25 C11 217.25 189.25 (LUX) 231.25 215.25 C12 224.25 69.25 (L’) 239.25 2
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Service manual WP 895/895F, CP885/885F CH EUROPE CCIR FRANCE GB(IRELAND) EAST OIRT 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 703.25 703.25 703.25 703.25 C51 711.25 711.25 711.25 711.25 C52 719.25 719.25 719.25 719.25 C53 727.25 727.25 727.25 727.25 C54 735.25 735.25 735.25 735.25 C
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Service manual WP 895/895F, CP885/885F CH EUROPE CCIR FRANCE GB(IRELAND) EAST OIRT 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 280.25 136.00 295.25 280.25 S19 287.25 160.00 303.25 287.25 S20 294.25 - - 294.25 S21 303.25 303.25 - 303.25 S22 311.25 311.25 311.25 311.25 S23 319.25 319.25 319.25 319.25
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Service manual WP 895/895F, CP885/885F 1-3 ATSS sorting method The TV set sweeps all the TV bands from beginning of VHF to end of UHF. The TV controlling software for each program checks if a VPS CNI code is transmitted ( this system exists for German, Swiss and Austrian transmissions). If no VPS CNI code is found, then the system check if a CNI code is transmitted as part of the teletext transmission ( Packet 8/30 format 1 ). If such a code ( VPS or teletext ) is found and if this code is in th
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Service manual WP 895/895F, CP885/885F The sor ting order within group II, III, and IV is based on the channel frequency. The Pro gram with the lo west frequency is allocated the first rank in its group, and so f orth until the last program of the group which has the highest fr equency. Special case : France If France is selected, the TV controlling softw are f irst swe eps all TV bands with Fr ance system selected ( positive video modulation) and the a second time with Europe system se
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Service manual WP 895/895F, CP885/885F 2 - Safety instruction WARNING: Only competent service personnel may carry out work involving the testing or repair of this equipment. X-RAY RADIATION PRECAUTION 1. Excessive high voltage can produce potentially hazardous X-RAY RADIATION. To avoid such hazards, the high voltage must not exceed the specified limit. The nominal value of the high voltage of this receiver is 26 KV (25” - 28”) at max beam current. The high voltage must not, under any circumstan
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Service manual WP 895/895F, CP885/885F 3 - Alignment instructions 3-1 Microcontroller con figuration : Service mode To switch the TV set into service mode please see instruction below. 1 - Select pr. number 91 2 - Adjust sharpness to minimum and exit all menu. 3 - Quickly press the key sequence : RED - GREEN - menu To software version is displayed beside the word Service, e.g. “ SERVICE V1.00A ”. To exit SERVICE men u press men u key or Std By key. 3-2 Service mode navigation Pr Up / D own remo
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Service manual WP 895/895F, CP885/885F 3-3 Microcontroller con figuration : Option bits These option bits are availa ble from Service mode. First find the OPTION control, and then use keys 0...7 on the remote keypad to control bits 0 to 7 respect ively. The table below shows the options availa ble ; B7 B6 B5 B4 B3 B2 B1 B0 Tuner options TOP text FASTEXT SVHS3 1 X TUBE 4:3 X 00 = Philips off /FLOF off disable 01 = ALPS TOP text FASTEXT SVHS3 10 = Philips ( A GC intern) 0 TUBE 16:9 X X on (FLOF) o
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Service manual WP 895/895F, CP885/885F 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 TRAPEZ, H BOW, to compensate for geometrical distorrin, HOR PARAL H BOW For HOR WIDTH, adjust for 91% overscan. HOR WIDTH PARAROLA - 16 -
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Service manual WP 895/895F, CP885/885F CORNER EW TRAPEZ 3-4-8- AGC - Adjust the antenna signal level at 70 dB V 2 - Tune a colour bar pattern. - Find the “AGC” item in service mode. - Adjust AGC volume ( RB10 ) to bring the cursor to central position : 32. - 17 -
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Service manual WP 895/895F, CP885/885F 4 - IC description 4-1 VCT383XA TV signal processor - Teletext 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 decoder ( 1 crystal ) Multistandard sync decoder Black-line detector Adaptive 2H comb filter Y/C separator - 18 -
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Service manual WP 895/895F, CP885/885F Horizontal scaling ( 0.25 to 4 ) Panoramavision Black-l evel expander Dynamic peaking Soft limiter (gamma correction) Colour transient impr ovement Programmable RGB matrix Analogu e RGB/Fastblank input Half-contrast switch Picture frame generator Scan velocity modulation output High-performance H/V deflection Angle and bow correction Separat e ADC for tube measurements EHT compensation 4-1-3- -Controller 8-bit, 10-Mhz CPU (
