MT1196A SERVICE MANUAL COLOR TELEVISION RECEIVER ORIGINAL MFR'S VERSION D Design and specifications are subject to change without notice. SERVICING NOTICES ON CHECKING 1. KEEP THE NOTICES As for the places which need special attentions, they are indicated with the labels or seals on the cabinet, chassis and parts. Make sure to keep the indications and notices in the operation manual. 6. AVOID AN X-RAY Safety is secured against an X-ray by considering about the cathode-ray tube and the high voltage peripheral circuit, etc. Therefore, when repairing the high voltage peripheral circuit, use the designated parts and make sure not modify the circuit. Repairing except indicates causes rising of high voltage, and it emits an X-ray from the cathoderay tube. 2. AVOID AN ELECTRIC SHOCK There is a high voltage part inside. Avoid an electric shock while the electric current is flowing. 3. USE THE DESIGNATED PARTS The parts in this equipment have the specific characters of incombustibility and withstand voltage for safety. Therefore, the part which is replaced should be used the part which has the same character. Especially as to the important parts for safety which is indicated in the circuit diagram or the table of parts as a mark, the designated parts must be used. 7. PERFORM A SAFETY CHECK AFTER SERVICING Confirm that the screws, parts and wiring which were removed in order to service are put in the original positions, or whether there are the portions which are deteriorated around the serviced places serviced or not. Check the insulation between the antenna terminal or external metal and the AC cord plug blades. And be sure the safety of that. (INSULATION CHECK PROCEDURE) 4. PUT PARTS AND WIRES IN THE ORIGINAL POSITION AFTER ASSEMBLING OR WIRING There are parts which use the insulation material such as a tube or tape for safety, or which are assembled in the condition that these do not contact with the printed board. The inside wiring is designed not to get closer to the pyrogenic parts and high voltage parts. Therefore, put these parts in the original positions. 5. TAKE CARE TO DEAL WITH THE CATHODE-RAY TUBE In the condition that an explosion-proof cathoderay tube is set in this equipment, safety is secured against implosion. However, when removing it or serving from backward, it is dangerous to give a shock. Take enough care to deal with it. 1. Unplug the plug from the AC outlet. 2. Remove the antenna terminal on TV and turn on the TV. 3. Insulation resistance between the cord plug terminals and the eternal exposure metal [Note 2] should be more than 1M ohm by using the 500V insulation resistance meter [Note1] . 4. If the insulation resistance is less than 1M ohm, the inspection repair should be required. [Note 1] If you have not the 500V insulation resistance meter, use a Tester. [Note 2] External exposure metal: Antenna terminal HOW TO ORDER PARTS Please include the following informations when you order parts. (Particularly the VERSION LETTER.) 1. MODEL NUMBER and VERSION LETTER The MODEL NUMBER can be found on the back of each product and the VERSION LETTER can be found at the end of the SERIAL NUMBER. 2. PART NO. and DESCRIPTION You can find it in your SERVICE MANUAL. IMPORTANT Inferior silicon grease can damage IC's and transistors. When replacing an IC's or transistors, use only specified silicon grease (YG6260M). Remove all old silicon before applying new silicon. A1-1 CONTENTS SERVICING NOTICES ON CHECKING ...................................................................................................... HOW TO ORDER PARTS ........................................................................................................................... IMPORTANT ................................................................................................................................................ CONTENTS ................................................................................................................................................. GENERAL SPECIFICATIONS .................................................................................................................... DISASSEMBLY INSTRUCTIONS ............................................................................................................... SERVICE MODE LIST ................................................................................................................................. CONFIRMATION OF USING HOURS ......................................................................................................... NOTE FOR THE REPLACING OF MEMORY IC ........................................................................................ ELECTRICAL ADJUSTMENTS .................................................................................................................. MAJOR COMPONENTS LOCATION GUIDE ............................................................................................. BLOCK DIAGRAM ...................................................................................................................................... PRINTED CIRCUIT BOARDS MAIN/CRT .......................................................................................................................................... SCHEMATIC DIAGRAMS MICON/TUNER .................................................................................................................................. CHROMA ........................................................................................................................................... DEFLECTION/CRT ............................................................................................................................ POWER ............................................................................................................................................. WAVEFORMS ............................................................................................................................................. MECHANICAL EXPLODED VIEW .............................................................................................................. MECHANICAL REPLACEMENT PARTS LIST .......................................................................................... ELECTRICAL REPLACEMENT PARTS LIST ............................................................................................ A1-1 A1-1 A1-1 A2-1 A3-1~A3-4 B-1 C-1 C-1 C-1 D1-1~D2-1 D3-1 E-1, E-2 F-1~F-4 G-1, G-2 G-3, G-4 G-5, G-6 G-7, G-8 H-1, H-2 I-1 J1-1 J2-1, J2-2 A2-1 GENERAL SPECIFICATIONS G-1.Outline of the Product 19 inch(480.0mmV):Measured diagonally Color CRT 90 degree deflection G-2.Broadcasting System US G-3.Color System System NTSC PAL M SECAM or Monochrome signal Yes Yes No No G-4.NTSC Playback(PAL 60Hz) G-5.NTSC 3.58+4.43/PAL60Hz G-6.Antenna Input Impedance VHF/UHF 75 ohm unbalanced G-7.Tuner and Receiving Channel Tuner : Contactless Electric Tuner Oscar(W/O HYPER) Oscar(W/ HYPER) France CATV Others channel coverage 2 ~ 69 , 4A , A-5 ~ A-1 , A~I , J ~ W , W+1~ W+84 Tuning System Frequency syn. Voltage syn. Others G-8.Preset Channel -- channels G-9.Intermediate Frequency Picture(fP) Sound (fS) fP-fS G-10.Stereo/Dual TV Sound Yes( NICAM G-11.Tuner Sound Muting G-12.Power Source G-13.Power Consumption: Stand by: Per Year: G-14.Dimensions(Approx.) 488 mm(W) G-15.Weight(Approx.) G-16.Cabinet Material Cabinet Front: 45.75MHz 41.25 MHz 4.50 MHz GERMAN Yes 120 V MHz MHz MHz USA No AC 50Hz 120 --120 V V V AC 60Hz 60 Hz 60 Hz JAPAN) MHz MHz MHz No 80 W at AC -- W at DC 6 W at AC -- kWh / Year 465 mm(D) 416 mm(H) Net: Gross: 17.5 kg ( 38.6 lbs) 20.0 kg ( 44.1 lbs) 94HB 94V2 94V0 94HB 94V2 94V0 DECABROM NON-DECA DECABROM NON-DECA PS ABS PS ABS Power Fuse Back Panel: G-17.Protector: G-18.Regulation Safety UL BS SEMKO NOM Radiation FCC SABA CNS X-Radiation PTB CSA NF NZ AS3159 DOC SI CISPR13 DHHS SAA NEMKO HOMOLO DENTORI FTZ NF DENTORI HWC A3- 1 SI FEMKO SABS UNE PTT NZ AS/NZS DENTORI CE DEMKO CNS GOST CE HOMOLO NONE NONE SEV IEC65 SISIR NONE SEV UNE GENERAL SPECIFICATIONS G-19.Temperature Operation Storage 5 -20 °C ~ °C ~ 40 °C 60 °C G-20.Operating Humidity Less than 80 %RH G-21.Clock and Timer Sleep Timer Yes Max 120 Min.( 10 Min. Step) No On/Off Timer Yes Programs No Wake Up Timer Yes Programs No G-22.Timer back up Time: More than -- Minutes (at Power Off Mode) G-23.Terminals VHF/UHF Antenna Input Din Type F-Type France Type Front Video Input (RCA ø8.3) Front Audio Input (RCA ø8.3) Rear Video Input (RCA ø8.3) Rear Audio Input (RCA ø8.3) Rear Video Output (RCA ø8.3) Rear Audio Output (RCA ø8.3) 21 Pin S Input(Rear) Ear Phone Jack(ø3.5) G-24.Indicator Power Stand By On Timer NONE ( ) ( ) ( ) G-25.Display On Screen Display Menu Clock Set( 12H 24H) System Selec Hotel Lock Area Code Sound 1/2 NICAM Auto Off Guide CH Set Audio CATV Pin Code Registration Control Level Sound Brightness Color Tint(NTSC Only) Tuning Bass Balance Back Light Stereo,Audio Output,Bilingual Picture Menu Stereo,Audio Output,SAP Mid Night Theater Stereo,Audio Output GAME AV Channel Clock Sleep Timer Sound Mute Pin Code G-26.OSD Language Eng Ger Fre Spa Ita Por OSD Language Setting Eng Ger Fre Spa Ita Por Not Applicable G-27.Speaker : P os i t i on Front Side Bottom Size 3 inches Imp 8 ohm x 1 pcs Power Max 1.5 W 10% 1.0 W (Typical) G-28.EXT Speaker Yes -- W Imp -ohm On/Off Timer CH Tuning Picture Language V-Chip Contrast Sharpness Treble Hotel Lock Jpn Jpn A3- 2 GENERAL SPECIFICATIONS G-29.Carton Master Carton: Need No Need Content: ---- Set Material: ---- / ---Corrugated Carton Dimensions: ---- mm(L) ---- mm(W) ---- mm(D) Description of Origin Yes No Gift Box Material Double/Brown Corrugated Carton ( with Photo Label) Double/White Corrugated Carton ( with Photo Label) Double Full Color Carton W/Photo Dimensions: 546 mm(L) 526 mm(W) 472 mm(D) Design: As Per Buyer 's Description of Origin: Yes No Drop Test Natural Dropping At 1 Corner / 3 Edges / 6 Surfaces Height 25cm 31cm 46cm 62cm Container Stuffing: 436 Sets / 40' container 80cm G-30.Accessories Owner's Manual ( W/Guarantee Card) [English/French] AC Plug Adapter Channel film Battery (UM- 4 x 2 ) Remote Control Unit Safety Tip Toll Free Insert Sheet Guarantee Card Audio-Video Cord (RCA) Registration Card Warning Sheet Quick Set-Up Sheet Schematic Diagram Information Sheet U/V Mixer 75 ohm Coaxial Cable ( Single Shield Double Shield) 300 ohm to 75 ohm VHF Antenna Adaptor 21pin Cable Car Cord Rod Antenna One Pole Two Pole( F-Type Din Type France Type) Loop Antenna ( F-Type Din Type France Type) G-31.Other Features Auto Degauss Auto Shut Off Canal+ CATV(181CH) Anti-Theft Rental Unitext Picture Menu G-32.Switch Front Power(Tact) System Select Main Power SW Rear AC/DC Degauss G-33.Magnetic Field BV : BH : BV : BH : +0.45G 0.18G -0.15G 0.15G Auto Search CH Allocation SAP Channel Lock Just Clock Function Game Position TopText Mid Night Theater Full OSD Premiere Comb Filter Auto CH Memory Hotel Lock Fastext Closed Caption V-Chip Channel Up/Reset Channel Down/Enter Sub Power TV/CATV Selector Main Power S W BV BH BV BH : : : : +0.35G 0.30G -0.25G 0.15G Volume Up/Set Up Volume Down/Set Down Menu:Vol Up + Vol Down BV BH BV BH : : : : +0.25G 0.30G -0.50G 0.30G A3- 3 GENERAL SPECIFICATIONS G-34.Remote Control Unit: RC-74 Glow in Dark Remocon Yes No Power Source: D.C 3 V Battery UM - 4 x 2 Total 26 Key Power Quick View TV/AV Stand By Status Bar Select 0 Time Select PAL/SECAM 1 Time Set Volume Up 2 Mute Volume Down 3 CH Skip CH Call 4 CH1/CH2 CH Down 5 Channel CH Up 6 Text/Mix/TV CH Down/Page Down 7 Display Cancel CH Up/Page Up 8 Initial Page +/9 Store Program 10 Reveal F/T/B 11 Sleep Hold 12 Aft/Skip List 1* Preset Rotate 2* 5.5/6.5MHz Browse 0/10 Auto Memory Std/Auto Tone 1/2 Auto Memory Info Call Band Select Mono/Auto Reset Search TV/Caption/Text Menu Clock/Program Expand Enter Clock/Set Red Add Ch Set Cyan Delete Set + Normal Yellow Set Color System Random Green Wide Selecy Tuning Up/Time Text Nicam/Mono Auto Wide On/Off Tuning Down/Reset Tone A/B Picture Position Navi FM Transmitter Direct Change/Auto Search Back Light Picture Menu Mid Night Theater A3- 4 DISASSEMBLY INSTRUCTIONS 1. REMOVAL OF ANODE CAP Read the following NOTED items before starting work. 3. After one side is removed, pull in the opposite direction to remove the other. NOTE Take care not to damage the Rubber Cap. INSTALLATION 1. Clean the spot where the cap was located with a small amount of alcohol. (Refer to Fig. 1-3.) * * After turning the power off there might still be a potential voltage that is very dangerous. When removing the Anode Cap, make sure to discharge the Anode Cap's potential voltage. Do not use pliers to loosen or tighten the Anode Cap terminal, this may cause the spring to be damaged. REMOVAL 1. Follow the steps as follows to discharge the Anode Cap. (Refer to Fig. 1-1.) Connect one end of an Alligator Cl ...