Magnum CTV-2120 TXT, Service Manual

Page 1: ...MODEL SERVICE MANUAL CTV 2120 TXT TV SET ...

Page 2: ...ified in the parts list 3 Some parts in this receiver have special safety related characteristics which would affect X RAY RADIATION protection For safety parts replacement should be carried out only after referring to the PRODUCT SAFETY NOTICE below PRODUCT SAFETY NOTICE Many electrical and mechanical parts in this receiver have special safety related characteristics directly relate to high volta...

Page 3: ...h voltage or high temperature 6 This receiver is designed to operate at AC 175 245V 50 60Hz NEVER connect to DC supply or any other power sources 7 The main chassis of this receiver is perfectly isolated INSTALLATION AND SERVICE ADJUSTMENTS GENERAL INFORMATION Normally this receiver have been thoroughly checked and adjusted before leaving the factory therefore it should operate normally and produc...

Page 4: ... BUTTON 4 NICAM BUTTON 5 PERSONAL PREFERENCE GREEN BUTTON PP 6 MENU BUTTON 7 VOLUME UP DOWN BUTTONS 8 STANDBY BUTTON 9 DIGIT SELECT BUTTONS 10 TV AV BUTTON 11 PREVIOUS YELLOW BUTTON 12 ANALOG BUTTON 13 SLEEP BLUE BUTTON 14 PROGRAM UP DOWN BUTTONS 15 CANCEL BUTTON 16 SUBCODE BUTTON 17 STOP BUTTON 18 REVEAL BUTTON 19 TV TXT BUTTON 20 INDEX BUTTON 21 MIX BUTTON 22 SIZE BUTTON 23 DIGIT ENTRY 0 9 BUTTO...

Page 5: ...ture tube with springs Fig 4 SUGGESTION Before servicing the chassis please read through X RAY RADIATION PRECAUTION SAFETY PRECAUTION and PRODUCT SAFETY NOTICE at Page 2 3 of this manual GENERAL ADJUSTMENT INSTRUCTIONS This receiver is transistorized and special care should be taken when servicing If not necessary do not attempt any adjustments because the requirements of the procedures are very s...

Page 6: ...ITOR POLYPROPYLENE FILM CAPACITOR ELECTROLYTIC CAPACITOR TRIMMER CAPACITOR METAL POLYESTER FILM CAPACITOR 3 Unit of Measure UH 4 Test Point 5 Marking of Ground Wire Ground wire of chassis COLD Ground wire of external wire HOT 6 Voltage Measurement The voltages at all points should be measured with a digital multi meter and the measuring conditions are as follows Power Source AC220V 50Hz Receiving ...

Page 7: ...on Transformer Voltage adjustable type having capacity of more than 200 watts Probe Low capacitance High impedance FM AM Signal Generator National MODEL VP8177A B VOLTAGE ADJUSTMENT Notice A B voltage closely relates to the picture tube s positive high voltage B To prevent it from producing excessive hazardous X RAY RADIATION ensure that B voltage must be adjusted to at the 108V POSITIONS 1 Check ...

Page 8: ...CAUTION There is no HIGH VOLTAGE ADJUSTMENT on this chassis a Connect an accurate high voltage meter to the second anode of the picture tube b Turn on the receiver and set the BRIGHTNESS COLOUR and CONTRAST Controls to the minimum zero beam current c High voltage will be measured below 30 5 KV d Adjust the BRIGHTNESS Control to both extremes to ensure the high voltage does not exceed the limit of ...

Page 9: ...reen raster Advance the GREEN bias control G CUT OFF is necessary d Loosen the clamp screw holding the yoke and slide the yoke and slide the yoke backward to provide vertical green belt zone in the picture screen e Remove the rubber wedges f Rotate and spread the tabs of the purity magnet See Fig 9 around the neck of the picture tube until the green belt is in the center of the screen At the same ...

Page 10: ...d Put another wedge into bottom space and remove the cover paper to stick e Tilt front of the yoke right or left to obtain better convergence in circumference See Fig 10 f Keep the yoke position and put another wedge in either upper space Remove the cover paper and stick the wedge on picture tube to hold the yoke g Detach the temporarily mounted wedge and put it in another upper space Stick it on ...

Page 11: ...FIXED CONVERGE MAGNET ASSEMBLY Figure 9 ADJUSTMENT OF MAGNETS ROTATE TWO TABS AT THE SAME TIME HORIZONTAL LINES BLU RED BLU BLU BLU RED RED RED 4 Pole Magnets Movement 6 Pole Magnets Movement Incline the Yoke up or down Incline the Yoke right or left Center Convergence by Convergence Magnets Circumference Convergence by DEF Yoke Fig 10 Dot movement Pattern GRN 30 30 30 DEF YOKE Figure 8 R G B R G ...

Page 12: ...ting is 04 in the range 00 to 07 V Size 50 Selects vertical size 50 adjustment setting is 17 in the range 00 to 3F V Linearity50 Selects vertical linearity 50 adjustment Setting is 0B in the range 00 or 0F H Position60 Selects horiztion position 60 adjustment setting is 0F range 00 to 1F V POS 60 Selects vertical position 60 adjustment setting is 04 in the range 00 to 07 V Size 60 Selects vertical...

Page 13: ... to 01 VCO Coarse L1 Selects VCO coarse L1 adjustment setting is 00 VCO Fine L1 Selects VCO fine L1 adjustment setting is 00 n Press MENU to display the Service 3 MENU Attn There is no ADJUSTMENT on this chassis n Press MENU to display the Service4 MENU n Press CHANNEL UP OR DOWN to select the highlighted item then VOL DOWN or VOL UP to increase or decrease the setting The data is written to EEPRO...

Page 14: ...ON 0 OFF 1 ON 0 OFF 1 ON Preset OFF Preset OFF Preset ON Preset OFF Preset ON Preset ON Table 1 Option byte 1 definitions The setmaker s logo can only be displayed if memory bank 1 is present If this bank is present displaying the logo can disabled by setting bit 0 high If the memory bank is present and bit 1 is set then the logo will be displayed for 15 seconds after a cold start only NOTE If no ...

Page 15: ...ns Option Byte 4 adjustment setting are 21hex Option byte 5 The following options are available in option byte 5 bit 7 bit6 bit 5 bit 4 bit3 bit2 bit1 bit 0 Nicam EHT protect Option Language Treat Table 0 Off 1 On 0 Off 1 On Language Treat Table Preset 1 Preset 1 Table 5 Option byte 5 definitions Option Byte 5 adjustment setting are 86hex In option byte 5 the bits 0 1 and 2 form a number between 0...

Page 16: ...PAL B G PAL D K SECAM B G SECAM D K CCIR CHINA CCIR OIRT 2 12 1 12 2 12 1 12 21 69 13 57 21 69 21 69 X Z 2 S1 S41 Z 1 Z 38 X Z 2 S1 S41 Video Audio Input Terminals Video Input RCA type 1Vp p 75 Ohm S Video Y 1 0V 75 Ohm C 0 3V 75 Ohm Audio Input RCA type 400mV Monitor Output Terminals Video Output RCA type 1Vp p 75 Ohm Audio Output RCA type 400Mv Audio Output Main Speaker 1 5 1 5W FOR 14 3 3W FOR ...

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Page 18: ...4 39750 10 M 3 X 10 B H MACHINE SCREW HK 4 0000 PC 1 PC FOR Q501 1 PC FOR IC600 1 PC FOR Q902 1 PC FOR IC301 2 05 63050 00 M3 NUT CH 4 0000 PC FOR EACH MANCHINE SRREW 2 06 00302 00 M3 SPRING WASHER CH 4 0000 PC FOR EACH MACHINE SCREW 2 20 60203 00 EYELET 2 X 3 HK 7 0000 PC 3 PCS FOR T901 4 PCS FOR T501 2 20 70103 01 EYELET 1 5X3MM WITH COPPER PLATE 4 0000 PC 2 PCS FOR L903 2 PCS FOR L904 2 50 3052...

Page 19: ...0469 HK 1 0000 PC C0925 ATTN THE POSITIVE POLE CONNECTED TO THE GROUND 2 51 03058 41 DIODE 1N4007 CH 4 0000 PC D0515 D0516 D0517 D0518 2 51 03071 05 DIODE BYV95B HK 1 0000 PC D0507 2 51 03075 68 RECTIFIER DIODE FR154 HK 3 0000 PC D0508 D0510 D0511 2 51 03079 71 RECTIFY DIODE TYPE FR104 MR 0469 HK 4 0000 PC D0301 D0302 D0501 D0903 2 51 08001 23 DIODE 1N4148 IT 15 0000 PC D0201 D0205 D0206 D0207 D02...

Page 20: ...R RT13A TYPE CH 1 0000 PC R0502 2 52 A3270GJ12 AP 2 7 KOHM 1 2W 5 CARBON FILM RESISTOR RT15 TYPE 1 0000 PC R0901 2 52 A3330EJ12 AP 3 3 KOHM 1 6W 5 CARBON FILM RESISTOR RT13A TYPE 5 0000 PC R0205 R0215 R0216 R0506 R0833 2 52 A3470EJ12 AP 4 7 KOHM 1 6W 5 CARBON FILM RESISTOR RT13A TYPE CH 1 0000 PC R0204 2 52 A3560EJ12 AP 5 6 KOHM 1 6W 5 CARBON FILM RESISTOR RT13A TYPE CH 3 0000 PC R0104 R0511 R0514...

Page 21: ...0000 PC R0214 2 52 A5220FJ12 AP 220 KOHM 1 4W 5 CARBON FILM RESISTOR RT14 TYPE 1 0000 PC R0308 2 52 B0680GJ12 AP 6 8 OHM 1 2W 5 METAL OXIDE RESISTOR RY15 TYPE 1 0000 PC R0518 2 52 B0680JJE1 AP 6 8 OHM 2W 5 METAL OXIDE RESISTOR RY17 PREFORMED MK TYPE 1 0000 PC R0517 2 52 B1100JJE1 AP 10 OHM 2W 5 METAL OXIDE RESISTOR RY17 TYPE PREFORMED 1 0000 PC R0315 2 52 B1220JJE1 AP 22 OHM 2W 5 METAL OXIDE RESIS...

Page 22: ...V 20 ALUMINUM ELECTROLYTIC CAPACITOR TYPE CD11G D F 0 08 CH 7 0000 PC C0215 C0216 C0228 C0231 C0232 C0807 C0919 2 54 A54700CM1 AN 4 7 UF 16V 20 ELECTROLYTIC CAPACITOR CD110 TYPE 2 0000 PC C0110 C0205 2 54 A54700FM1 AF 4 7 UF 50V 20 ALUMINUM ELECTROLYTIC CAPACITOR TYPE CD11G D F 0 08 CH 1 0000 PC C0252 2 54 A61000CM1 AN 10 UF 16V 20 ELECTROLYTIC CAPACITOR CD110 TYPE 3 0000 PC C0220 C0222 C0227 ATTN...

Page 23: ...LYTIC CAPACITOR TYPE CD11G D F 0 08 CH 1 0000 PC C0304 2 54 B01000FJ2 AA 10 PF 50V 5 CERAMIC CAP C100J20SLF6FJ5A 1 0000 PC C0209 2 54 B04700FJ2 AA 47 PF 50V 5 CERAMIC CAP C470J22SLF6FJ5A CH 2 0000 PC C0237 C0238 2 54 B11200FJ1 AA 120 PF 50V 5 CERAMIC CAP C121J22SLF53L2 00 1 0000 PC C0801 2 54 B12000FJ2 AA 200 PF 50V 5 CERAMIC CAPACITOR TYPE NO C201J26SLF6J5 TAPED FORM CH 1 0000 PC C0817 2 54 B1220...

Page 24: ... C21200GJ1 CE 1200 PF 100V 5 POLYESTER F ILM CAPACITOR 2A122J MR 0469 KO 1 0000 PC C0310 2 54 C22200GK1 AH 2200 PF 100V 10 POLYESTER FILM CAPACITOR CL11 TYPE 2 0000 PC C0230 C0904 2 54 C23300GJ1 CE 3300 PF 100V 5 POLYESTER FILM CAPACITOR 2A332J MR 0465 KO 1 0000 PC C0902 2 54 C24700FK1 E 4700 PF 50V 10 POLYESTER FILM CAPACITOR CH 1 0000 PC C0505 2 54 C38200GK1 B 0 082UF 100V 10 POLYSTYREN FILM CAP...

Page 25: ...HORIZONTAL DRIVE TRANSFORMER HB19F336 1 0000 PC T0902 2 58 75409 01 LINE FILTER 18 MH TYPE NO LB01004 1 0000 PC T0502 2 58 75498 01 LINE FILTER 40 55 MH TYPE NO LB01005 1 0000 PC T0503 2 58 95468C 01B SWITCHING POWER TRANSFORMER EC40 KB01343 1 0000 PC T0501 2 59 06411 02 1 UH 10 PEAKING COIL HORIZONTAL TYPE TYPE NO AL0305 1R0K CH 1 0000 PC L0301 2 59 06411 05 8 2 UH 10 PEAKING COIL HORIZONTAL TYPE...

Page 26: ...C IC0201 2 67 AA008403 01 I C TA8403K JP 1 0000 PC IC0301 2 67 CJ007805 01 I C MC7805CT PACKAGE TO 220 HK 2 0000 PC IC0503 IC0505 2 67 CJ007809 01 I C MC7809CT PACKAGE TO 220 HK 1 0000 PC IC0502 2 69 02006 05 PHOTOCOUPLER K1010C HK 1 0000 PC IC0501 2 72 01097 01 FUSE T3 15A 250V RT1 20 3 15A W O VDE APPROVAL 1 0000 PC 2 72 02001 06 FUSE HOLDER MR 0460 HK 2 0000 PC 2 73 1AEF341N 01C 1 POLE MODULAR ...

Page 27: ... MTG 2 04 43790 18 T 4 X 18 B H SELF TAPPING SCREW HARDENING CH 24 0000 PC 6 PCS FOR FRONT BACK CABINET MTG 6 PCS FOR FRONT BOTTOM CABINET MTG 12 PCS FOR FRONT CRT BRACKET MTG 2 05 66100 03C M6 NUT HARDENED 4 0000 PC 2 06 00651 04A PLAIN WASHER 4 0000 PC 2 07 40167 00 GROUNDING WIRE SPRING ID 7 DEC 18288 CH 2 0000 PC 2 10 10597 00 SERIAL NO LABEL FOR TV 3 PCS KIT 1 0000 KT 2 10 20955 01 CAUTION LA...

Page 28: ...0 ST 2 01 0010600C 00 NAME PLATE MAGNUM W SILVER HOT STAMPING 36MM X 4MM FOR 14 21 USE 1 0000 PC 2 10 20742 00 INSTRUCTION BOOKLET MAGNUM CE 5429 ENGLISH TOSHIBA CHASSIS 1 0000 PC 2 13 0004100A 184 BACK PLATE MAGNUM CE 5429 AC220V 50HZ 75W ENGLISH 1 0000 PC 2 14 21068 00 CARTON BOX 21 MAGNUM CTV 2120 TXT LARGER SIZE 655X550X528MM MR 0424 1 0000 PC 1 NU 5429TST B01 MECH PARTS UNIT MAGNUM 1 0000 ST ...

Page 29: ...0EJ12 AP 2 KOHM 1 6W 5 CARBON FILM RESISTOR RT13A TYPE CH 2 0000 PC R0919 R0921 2 54 A54700CM1 AN 4 7 UF 16V 20 ELECTROLYTIC CAPACITOR CD110 TYPE 1 0000 PC C0839 2 54 A54700FM1 AF 4 7 UF 50V 20 ALUMINUM ELECTROLYTIC CAPACITOR TYPE CD11G D F 0 08 CH 1 0000 PC C0922 1 NU 5429TST BG03 SCART UNIT MONO MAGNUM SIMPLE SCART 1 0000 ST 2 04 39750 16 M 3 X 16 B H MACHINE SCREW HK 2 0000 PC FOR 21 PIN JACK M...

Page 30: ......

Page 31: ... A1750EJ12 AP 75 OHM 1 6W 5 CARBON FILM RESISTOR RT13A TYPE 2 0000 PC R0702 R0703 2 54 A61000CM1 AN 10 UF 16V 20 ELECTROLYTIC CAPACITOR CD110 TYPE 2 0000 PC C0704 C0706 2 54 A71000CM1 AF 100 UF 16V 20 ALUMINUM ELECTROLYTIC CAPACITOR TYPE CD11G D F 0 08 CH 3 0000 PC C0701 C0705 C0708 2 54 B41000FZ2 CI 100000PF 50V 80 20 CERAMIC CAP MR 0469 1 0000 PC C0702 2 60 L5429T20 05 AV SHIFT PCB DEC 17370 CH ...

Page 32: ... THE E GINEER S SPECIAL ORDER J6 SHORT CIRCUIT ADD W0000 BARE WIRE 1 NU 5429TST F01 SIF UNIT CONTEC 1 0000 ST 2 51 08001 23 DIODE 1N4148 IT 2 0000 PC D0202 D0203 2 52 A2100EJ12 AP 100 OHM 1 6W 5 CARBON FILM RESISTOR RT13A TYPE CH 1 0000 PC R0227 2 52 A2220EJ12 AP 220 OHM 1 6W 5 CARBON FILM RESISTOR RT13A TYPE CH 2 0000 PC R0229 R0230 2 52 A3270EJ12 AP 2 7 KOHM 1 6W 5 CARBON FILM RESISTOR RT13A TYP...

Page 33: ...ECTROLYTIC CAPACITOR TYPE CD11G D F 0 08 CH 2 0000 PC C0011 C0019 2 54 B11000FJ1 BN 100 PF 50V 5 CERAMIC CAPACITOR CC1 TYPE 1 0000 PC C0017 2 54 B31000FZ2 AA 0 01 UF 50V 80 20 CERAMIC CAPACITOR T103Z34Z5VF6FJ5 TAPED FORM CH 3 0000 PC C0014 C0015 C0018 2 54 C33300GK1 BP 0 033 PF 100V 10 POLYESTER FILM CAPACITOR CL11 TYPE MR 0456 1 0000 PC C0020 2 54 C41000GJ1 BP 0 1 UF 100V 5 POLYSTER FILMCAPACITOR...

Page 34: ...SISTOR RT13A TYPE CH 5 0000 PC R0407 R0412 R0418 R0419 R0420 2 52 A3150EJ12 AP 1 5 KOHM 1 6W 5 CARBON FILM RESISTOR RT13A TYPE CH 1 0000 PC R0907 2 52 A3180EJ12 AP 1 8 KOHM 1 6W 5 CARBON FILM RESISTOR RT13A TYPE CH 1 0000 PC R0903 2 52 A4100EJ12 AP 10 KOHM 1 6W 5 CARBON FILM RESISTOR RT13A TYPE CH 1 0000 PC R0413 2 52 A5100EJ12 AP 100 KOHM 1 6W 5 CARBON FILM RESISTOR RT13A TYPE CH 1 0000 PC R0246 ...

Page 35: ...COIL FOR 21 CTV DOUBLE INSULATION CH 1 0000 PC 2 59 04002 01 46 UH 20 LINEARITY COIL LS 11379 CH 1 0000 PC L0904 2 59 08001 05 68 UH 10 PEAKING COIL HORIZONTAL TYPE TYPE NO AL0407 680K CH 1 0000 PC L0401 2 59 08001 18 56 UH 10 CHOKE COIL RL1011 TYPE CH 1 0000 PC L0903 2 60 L0549620 05A CRT PCB FOR 21 SAMSUNG CRT CH 1 0000 PC ATTN Q401 Q403 Q405 PIN C E SHOULD BE REPLAECD WITH AN ANNEALED BARE WIRE...

Page 36: ...UM ELECTROLYTIC CAPACITOR TYPE CD11G D F 0 08 CH 2 0000 PC C0229 C0251 2 54 A61000CM1 AN 10 UF 16V 20 ELECTROLYTIC CAPACITOR CD110 TYPE 2 0000 PC C0243 C0250 2 54 A71000CM1 AF 100 UF 16V 20 ALUMINUM ELECTROLYTIC CAPACITOR TYPE CD11G D F 0 08 CH 1 0000 PC C0242 2 54 B21000FK1 BN 1000 PF 50V 10 CERAMIC CAPACITOR CT1 TYPE 3 0000 PC 1 PC FOR THE BACK SIDE SOLDERED ON THE 1 TO 2 PINS OF PLUG A2 1 PC FO...

Page 37: ...K 1 0000 PC 1 NU 5429TST N02 AUDIO UNIT MONO CONTEC 1 0000 ST 2 02 0204600C 00A HEAT SINK MR 0464 1 0000 PC FOR IC7056 2 52 A0820EJ12 AP 8 2 OHM 1 6W 5 CARBOM FILM RESISTOR RY13A TYPE 1 0000 PC R0612 2 52 A2200EJ12 AP 200 OHM 1 6W 5 CARBON FILM RESISTOR RT13 TYPE 1 0000 PC R0605 2 52 A3100EJ12 AP 1 KOHM 1 6W 5 CARBON FILM RESISTOR RT13A TYPE DEC 17339 CH 2 0000 PC R0606 R0617 2 52 A3180EJ12 AP 1 8...

Page 38: ... CARBON FILM RESISTOR RT13A TYPE CH 3 0000 PC R0824 R0825 R0826 2 52 A2560EJ12 AP 560 OHM 1 6W 5 CARBON FILM RESISTOR RT13A TYPE CH 1 0000 PC R0871 2 52 A3100EJ12 AP 1 KOHM 1 6W 5 CARBON FILM RESISTOR RT13A TYPE CH 5 0000 PC R0822 R0862 R0863 R0876 R0879 2 52 A3150EJ12 AP 1 5 KOHM 1 6W 5 CARBON FILM RESISTOR RT13A TYPE CH 1 0000 PC R0806 2 52 A3200EJ12 AP 2 KOHM 1 6W 5 CARBON FILM RESISTOR RT13A T...

Page 39: ...C C0808 C0809 2 54 B08200FJ1 AA 82 PF 50V 5 CERAMIC CAP Y5F MR 0456 CH 1 0000 PC C0832 2 54 B11800FJ1 AA 180 PF 50V 5 CERAMIC CAP C181J26SLF53L5 CH 1 0000 PC C0815 2 54 B12200FJ1 AA 220 PF 50V 5 CERAMIC CAPACITOR 3 0000 PC C0890 C0891 C0892 2 54 B12200FJ2 BN 220 PF 50V 5 CERAMIC CAPACITOR CC1 SL 50V 220PF 5 TAPE FORM 1 0000 PC C0811 2 54 B21500FK1 AA 1500 PF 50V 10 CERAMIC CAPACITOR MR 0456 CH 1 0...

Page 40: ... DEC 17595 CH 1 0000 PC KR0839 2 52 A3160EJ12 AP 1 6 KOHM 1 6W 5 CARBON FILM RESISTOR DEC 17595 1 0000 PC KR0818 2 52 A3330EJ12 AP 3 3 KOHM 1 6W 5 CARBON FILM RESISTOR RT13A TYPE DEC 17888 2 0000 PC KR0817 R0882 2 52 A3620EJ12 AP 6 2 KOHM 1 6W 5 CARBON FILM RESISTOR RT13 TYPE DEC 17595 1 0000 PC KR0816 2 52 A4160EJ12 AP 16 KOHM 1 6W 5 CARBON FILM RESISTOR RT13A TYPE DEC 17595 1 0000 PC KR0815 2 60...

Page 41: ...2 C05 003 ALCOHOL CH 0 0100 KG 2 C05 004 THINNER 810 CH 0 0170 KG 2 C06 001 SOLDERING BAR 60 40 DEC 17752 CH 0 0300 KG 2 C06 002 SOLDERING WIRE 60 40 DEC 17752 CH 0 0170 KG 2 C06 005 SOLDERING FLUX 809 CH 0 0110 KG 2 C06 006 TRICHLORETHYLENE CH 0 0150 KG 2 C06 007 YELLOW CONTACT CEMENT KT 2 DEC 17752 HK 0 0010 GL 2 C07 005 ANNEALED BARE COPPER WIRE 0 6MM DEC 17752 CH 0 0160 KG 2 C07 006 HEAT TRANS...

Page 42: ...T ZU 21 BR01 CONSUMABLE PARTS UNIT FOR 21 CASING ASSY 1 0000 ST 2 C06 002 SOLDERING WIRE 60 40 DEC 17752 CH 0 0045 KG 2 C08 005 STAPLE 18MM DEC 17347 CH 6 0000 PC Abbreviation CLS MD Model VS Version AS Assembly UN Unit U M FT Foot GL Gallon KG Kilogram KT Kit LB Pound LT Litre M Metre MM Millimetre OZ Ounce PC Piece PR Pair RL Roll ST Set TB Tube TN Tin UN Unit Alternate Active Marks After ECN No...