Service manual

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SERVICE MANUAL

Design and specifications are subject to change without notice.

COLOR TELEVISION RECEIVER

MT1196A

ORIGINAL

MFR’S VERSION D

Summary of content (27 pages)

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MT1196A SERVICE MANUAL COLOR TELEVISION RECEIVER ORIGINAL MFR’S VERSION D Design and specifications are subject to change without notice.
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SERVICING NOTICES ON CHECKING 1. KEEP THE NOTICES 6. AVOID AN X-RAY 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. 2. AVOID AN ELECTRIC SHOCK There is a high voltage part inside. Avoid an electric shock while the electric current is flowing.
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CONTENTS SERVICING NOTICES ON CHECKING ...................................................................................................... HOW TO ORDER PARTS ........................................................................................................................... IMPORTANT ................................................................................................................................................ CONTENTS ..............................................................
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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 M NTSC PAL SECAM or Monochrome signal G-4.NTSC Playback(PAL 60Hz) Yes No G-5.NTSC 3.58+4.43/PAL60Hz Yes No G-6.Antenna Input Impedance VHF/UHF 75 ohm unbalanced G-7.
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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.
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GENERAL SPECIFICATIONS G-29.
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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.
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DISASSEMBLY INSTRUCTIONS 3. After one side is removed, pull in the opposite direction to remove the other. 1. REMOVAL OF ANODE CAP Read the following NOTED items before starting work. * * NOTE 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.
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SERVICE MODE LIST This unit provided with the following SERVICE MODES so you can repair, examine and adjust easily. To enter the Service Mode, press both set key and remote control key for more than 1 second. Set Key Remocon Key VOL. (-) MIN 0 Releasing of V-CHIP PASSWORD. Operations VOL. (-) MIN 1 Initialization of the factory. NOTE: Do not use this for the normal servicing. POWER ON total hours is displayed on the screen. Refer to the "CONFIRMATION OF USING HOURS". VOL.
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ELECTRICAL ADJUSTMENTS 1. BEFORE MAKING ELECTRICAL ADJUSTMENTS 2. BASIC ADJUSTMENTS Read and perform these adjustments when repairing the circuits or replacing electrical parts or PCB assemblies. 1. Receive an 80dB monoscope pattern. 2. Connect the digital voltmeter between the TP001 and the GND. 3. Activate the adjustment mode display of Fig. 1-1 and press the channel button (02) on the remote control to select "RF AGC". 4. Press the VOL.
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ELECTRICAL ADJUSTMENTS TV Fig. 2-1 00 OSD A 0% 15 B Fig. 2-3 2-10: VERTICAL VCO 1. Place the set with Aging Test for more than 10 minutes. 2. Receive an 80dB monoscope pattern. 3. Connect the digital voltmeter between the pin 5 of CP601 and the GND. 4. Activate the adjustment mode display of Fig. 1-1 and press the channel button (03) on the remote control to select "VIF VCO". 5. Press the VOL. UP/DOWN button on the remote control until the digital voltmeter is 2.5V. 110% 100% Fig.
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ELECTRICAL ADJUSTMENTS 3. PURITY AND CONVERGENCE ADJUSTMENTS 3-3: STATIC CONVERGENCE NOTE Adjust after performing adjustments in section 3-2. 1. Turn the unit on and let it warm up for at least 30 minutes before performing the following adjustments. 2. Place the CRT surface facing east or west to reduce the terrestrial magnetism. 3. Turn ON the unit and demagnetize with a Degauss Coil. 1. Receive the crosshatch pattern from the color bar generator. 2.
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MAJOR COMPONENTS LOCATION GUIDE TU001 FB401 TP001 CP601 FOCUS VOLUME SCREEN VOLUME MAIN TP023 J801 TP022 CRT D3-1
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BLOCK DIAGRAM SDA SCL AGC VOL_UP IF TU001 CH_UP 11 5 4 1 X602 3.
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FH501 FH502 C504 SW105 L801 R806 C446 C819 RY101 W002 W897 R640 C416 SW103 R803 R805 R807 C132 R508 CP401 C507_1 D407 R515 R445 TP501 SW102 C354 C351 R177 R443 R503 SW101 C661 W008 W809 C123 L101 W011 W010 W021 W025 W026 C630 C614 C631 W046 C119 C130 D104 C124 D611 D610 C121 C122 C601 L605_2 C634 C637 C603 C607 C623 R007 C639 C621 W071 C624 L606 C604 C644 W012 W031 R006 R645 C003 W032 R618 C654 L603_2 C128 W033 L607 W067 W068 X101_1 D612
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R815 C804_1 R813 R809 C806_1 R816 R814 C805_1 R811 R101 F-3 R505 R353 R357 R356 R354 R351 R128 R119 C116 C117 R113 R107 49 R612 R611 R627 R630 R606 C642 C618_1 R603 C626 R621 R615 R622 R608 R616 R620 R617 R604 R626 R624 R613 R614 R619 R631 R129 R625 R605 1 R636 R634 R122 R124 R104 R115 R114 C120 R130 R609 C126 C127 R635 33 R406 W822 R116 R120 R121 IC601 R639 C643 C616 R646 R123 R103 17 R633 R601 R602 R638 R642 R102 R106 R105 R111 C114 C113 R117 IC101
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B D E F G H MICON/TUNER SCHEMATIC DIAGRAM ATC001 NXC0032-010010 (MAIN PCB) 4.6 5.0 1.3 NC 6.2 NC 13 12 2 1 AGC 3 ADRES 4 SCL 5 SDA 6 V.S NC 5.0 FROM/TO POWER C002 6.3V 470 YK 0 NC 5.0 TP001 C003 50V 4.7 +B KA AUDIO_MUTE R007 270 1/4W FROM/TO CHROMA AGC C123 16V 10 KA R006 270 1/4W 68K 1/2W R002 68K 1/2W 6 7 R001 3 GND 2 B+ 1 Vout OS101 PIC-28143SY-2 30.0 0 NC B HZ30-3L 100P C004 C007 D001 7 0.
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A B C D E G H CHROMA SCHEMATIC DIAGRAM TO MICON/TUNER (MAIN PCB) Y_VIDEO 8 F 8 SYNC 6 4.9 AT+5V REG. Q603 2SD734 9.5 5.5 FROM POWER 7.9 M 0.015 C616 19 18 17 G OUT 14 4.8 15 1.7 16 1.6 1.8 Y 47K 3.2 C638_1 R642 50V 2.2 KANP D605 390K 11E1-EIC 6 0 4.7 0 0 C610 7.0 NC 2.8 S803Y 50V 0.22 KA C645 5 S803X 16V 47 YK 4.9 C613_1 4.9 1 TF 4.8 2.2 W822 FROM/TO DEFLECTION/CRT 0 P_CON+5V 7.9 ABCL 3.7 4 V_FEEDBACK 7.9 V_OUT 10V 470 YK 22 20 21 13 3.9 3.
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A B C D E F G H DEFLECTION/CRT SCHEMATIC DIAGRAM (MAIN PCB) 8 8 S101 GND 1 1 GND CLAMP 2 2 CLAMP G.OUT 3 3 G.OUT R.OUT 4 4 R.OUT B.OUT 5 5 B.OUT 6 6 HEATER 7 7 HEATER GND 8 8 GND 9 9 10 10 180V 180V 7 CP802B 51048-1000 W837 W838 R G B 4.7K R813 21 6 22 TP023 TP024 TP022 5 100V 22 YK R804 2.7K 1/4W R805 12K C448 AU02A-EIC 2W 5 7 1 2.7K 1/4W +-1% BLUE OUT Q803_1 2SC4217 L801 9 10 8 6 11 2.7 120.
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A B C D E F G H POWER SCHEMATIC DIAGRAM 8 8 (MAIN PCB) CAUTION: ATTENTION: 4A 125V FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, REPLACE ONLY WITH THE SAME TYPE 4A 125V (F501) FUSE. POUR UNE PROTECTION CONTINUE LES RISQUES D’INCEIE N’UTILISER QUE DES FUSIBLE DE MEME TYPE 4A 125V (F501). D501 RM11C-EIC C503 RM11C-EIC B 500V 0.001 B 7 DEGAUSS COIL L502 8R200026 D502 C504 7W 500V 0.001 3.9 CP502 TV-50P-02-A1 1 1 R502 POWER REG.
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WAVEFORMS MICON/TUNER 1 200mV 5ms/div 6 0.5V 20µs/div 11 1V 20µs/div 2 0.5V 20µs/div 7 200mV 20µs/div 12 1V 20µs/div 3 200mV 20µs/div 8 20V 20µs/div 13 1V 20µs/div DEFLECTION/CRT 4 200mV 5ms/div 9 200mV 20µs/div 14 0.5V 5ms/div CHROMA 5 0.5V 2ms/div 10 0.5V 5ms/div 15 20V 20µs/div NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram.
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WAVEFORMS 16 2V 20µs/div 21 50V 20µs/div 17 200V 20µs/div 22 50V 20µs/div POWER 18 10V 5ms/div 23 0.5V 1ms/div 19 10V 5ms/div 24 1V 1ms/div 20 50V 20µs/div NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram.
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MECHANICAL EXPLODED VIEW 202 111 202 202 202 201 J801 110 201 118 PCB110 (CRT PCB) 201 202 L502 203 FB401 205 201 V801 104 103 203 112 116 102 TU001 105 117 206 PCB010 (MAIN PCB) 204 109 113 108 114 204 107 115 SP351 106 101 I-1 ATC001
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MECHANICAL REPLACEMENT PARTS LIST REF. NO. PART NO.
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ELECTRICAL REPLACEMENT PARTS LIST REF. NO. PART NO.
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ELECTRICAL REPLACEMENT PARTS LIST REF. NO. PART NO.
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SPEC.NO. M3H6-54C O/R NO.