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Memorex MT1132A Service Manual

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MT1132A
SERVICE MANUAL
COLOR TELEVISION RECEIVER
ORIGINAL
MFR'S VERSION A
Design and specifications are subject to change without notice.

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  • Page 1 MT1132A SERVICE MANUAL COLOR TELEVISION RECEIVER ORIGINAL MFR’S VERSION A Design and specifications are subject to change without notice.
  • Page 2 MT1132A SERVICE MANUAL COLOR TELEVISION RECEIVER ORIGINAL 2 MFR’S VERSION P MFR’S VERSION PCB010 TU001 V801 TMX494A NJH3022U268 A34AGT13X98(L) TMX494B TECC1040PG32D A34JXV70X53N45 Pleas file the revision with the original version.
  • Page 3 Change of CRT ELECTRICAL REPLACEMENT PARTS LIST MFR'S VERSION K MFR'S VERSION P PART NO. DESCRIPTION PART NO. DESCRIPTION REF. NO. ! V801 098Q1404B2 CRT W/DY A34AGT13X98(L) 098Y1404B9 CRT W/DY A34JXV70X53N45 ! R429 R655812R7J R,FUSE 2.7 OHM 1W R655812R2J R,FUSE 2.2 OHM 1W C804 CS0KB04K2K CC...
  • Page 4 M3J8-12C SPEC.NO. K193004 O/R NO.
  • Page 5 MT1132A SERVICE MANUAL COLOR TELEVISION RECEIVER ORIGINAL 1 MFR’S VERSION F, K MFR’S VERSION PCB010 TUNER TMX494A NJH3022U268 TMX494B TECC1040PG32D Design and specifications are subject to change without notice.
  • Page 6 ELECTRICAL ADJUSTMENTS (MFR'S VERSION K) 2. BASIC ADJUSTMENTS 2-1: RF AGC DELAY Place the set with Aging Test for more than 15 minutes. Receive the VHF HIGH (63dB). Connect the digital voltmeter to R606. Activate the adjustment mode display of Fig. 1-1 and press the channel button (02) on the remote control to select "RF AGC DELAY".
  • Page 7 ELECTRICAL REPLACEMENT PARTS LIST PCB VERSION UP MFR'S VERSION A MFR'S VERSION F PART NO. DESCRIPTION PART NO. DESCRIPTION REF. NO. PCB010 A3J812A010 MAIN PCB ASS'Y (VERSION A) TMX494A A3J812A010 MAIN PCB ASS'Y (VERSION F) TMX494B MAIN PCB's are interchangeable. Change of TUNER MFR'S VERSION F MFR'S VERSION K...
  • Page 8 M3J8-12A SPEC.NO. K163004 O/R NO.
  • Page 9 WAVEFORMS MICON/TUNER 11 1V 20µs/div 200mV 5ms/div 0.5V 20µs/div 12 1V 20µs/div 0.5V 20µs/div 200mV 20µs/div 1V 20µs/div 3 200mV 20µs/div 20V 20µs/div DEFLECTION/CRT 200mV 5ms/div 14 0.5V 5ms/div 9 200mV 20µs/div CHROMA 15 20V 20µs/div 0.5V 5ms/div 0.5V 2ms/div NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram.
  • Page 10 WAVEFORMS 16 2V 20µs/div 21 50V 20µs/div 26 500mV 20us/div 22 50V 20µs/div 200V 20µs/div SOUND/AV 0.5V 1ms/div 10V 5ms/div 10V 5ms/div 1V 1ms/div 50V 20µs/div 25 500mV 1ms/div NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram.
  • Page 11 MECHANICAL EXPLODED VIEW J801 PCB110 (CRT PCB) L503 FB401 V801 TU001 J352 PCB010 (MAIN PCB) SP351...
  • Page 12 MECHANICAL REPLACEMENT PARTS LIST REF. NO. PART NO. DESCRIPTION A3J812A720 CABINET,FRONT ASS'Y 701WPJB186 CABINET,FRONT 713WPAA020 GUIDE,REMOCON 735WPAA122 BUTTON,FRAME 735WPAA121 BUTTON,HOLDER 735WPA0396 SPEAKER,HOLDER 726000A016 SHEET,CRT SERVICEMAN 741WUA0019 SPRING,EARTH 800WQ00044 FELT SHEET 5x50xT0.5 HEAT SINK 702WPAA134 CABINET,BACK 722A08A072 SHEET,RATING 8117540A64 SCREW,TAPPING (B0) TRUSS 4x16 8110630A04 SCREW,TAP TITE (P)
  • Page 13 ELECTRICAL REPLACEMENT PARTS LIST REF. NO. PART NO. DESCRIPTION REF. NO. PART NO. DESCRIPTION RESISTORS DIODES ! R401 R4X5T4104F R, METAL 100K OHM 1/4W D602 D97U08R21B DIODE, ZENER MTZJ8.2B T-77 ! R405 R4X5T4183F R, METAL 18K OHM 1/4W D605 D2WT011E10 DIODE, SILICON 11E1-EIC ! R406 R903N8102J...
  • Page 14 ELECTRICAL REPLACEMENT PARTS LIST REF. NO. PART NO. DESCRIPTION MISCELLANEOUS FH502 06710T0006 HOLDER, FUSE EYF-52BC OS101 077Q014003 REMOTE RECEIVER PIC-28143SY-2 ! SP351 070Y132018 SPEAKER S08F21 ! TH501 DF5EL3R0A0 DEGAUSS, ELEMENT ZPB45BL3R0A TM101 076N0DW010 TRANSMITTER RC-DW010 ! TU001 0145W00052 TUNER, VHF-UHF NJH3022U268 ! V801 098Q1404B2 CRT W/DY...
  • Page 15 M3J8-12A SPEC.NO. K123003 O/R NO.

  • Page 16: Servicing Notices On Checking

    SERVICING NOTICES ON CHECKING 1. KEEP THE NOTICES 6. AVOID AN X-RAY As for the places which need special attentions, Safety is secured against an X-ray by consider- they are indicated with the labels or seals on the ing about the cathode-ray tube and the high cabinet, chassis and parts.

  • Page 17: Table Of Contents

    CONTENTS SERVICING NOTICES ON CHECKING ...................... A1-1 HOW TO ORDER PARTS ........................... A1-1 IMPORTANT ..............................A1-1 CONTENTS ..............................A2-1 GENERAL SPECIFICATIONS ........................A3-1~A3-4 DISASSEMBLY INSTRUCTIONS ....................... SERVICE MODE LIST ..........................CONFIRMATION OF USING HOURS ......................NOTE FOR THE REPLACING OF MEMORY IC ..................ELECTRICAL ADJUSTMENTS ........................

  • Page 18: General Specifications

    GENERAL SPECIFICATIONS G - 1 CRT Size / Visual Size 13 inch / 335.4mmV Syst em CRT Type Normal Deflection degree Magnetic Field BV/BH +0.45G/0.18G Color System NTSC Speaker 1Speaker Position Bottom Size 3 Inch Impedance Sound Output 1.0 W 10%(Typical) 0.8 W NTSC3.58+4.43 /PAL60Hz...
  • Page 19 GENERAL SPECIFICATIONS Channel(TV/Cable) CH Label Sleep Timer Sound Mute V-chip Rating G - 8 OSD Language English French Spanish OSD Language Setting English G - 9 Clock and Sleep Timer Max Time 120 Min Timer Step On/Off Timer Program(On Tim / Off Tim) Wake Up Timer Timer Back-up (at Power Off Mode) more than...
  • Page 20 GENERAL SPECIFICATIONS Channel Lock Just Clock Function Game Position CH Label VM Circuit Full OSD Premiere Comb Filter Lines Auto CH Memory Hotel Lock Closed Caption Stable Sound Favorite CH G - 1 2 Accessories Owner's Manual Language English w/Guarantee Card Remote Control Unit Rod Antenna Poles...
  • Page 21 GENERAL SPECIFICATIONS Gross (Approx.) 11.0kg ( 24.4lbs) G - 1 6 C arton Master Carton Content ---- Sets Material Dimensions W x D x H(mm) x -- x -- Description of Origin Gift Box Material Double/Brown Dimensions W x D x H(mm) x 440 x 380 Design...

  • Page 22: Disassembly Instructions

    DISASSEMBLY INSTRUCTIONS 3. After one side is removed, pull in the opposite direction to 1. REMOVAL OF ANODE CAP remove the other. Read the following NOTED items before starting work. NOTE After turning the power off there might still be a potential Take care not to damage the Rubber Cap.

  • Page 23: Service Mode List

    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. Remocon Key Set Key Operations Releasing of V-CHIP PASSWORD.

  • Page 24: Electrical Adjustments

    ELECTRICAL ADJUSTMENTS BEFORE MAKING ELECTRICAL 2. BASIC ADJUSTMENTS ADJUSTMENTS 2-1: RF AGC DELAY Read and perform these adjustments when repairing the Place the set with Aging Test for more than 15 minutes. circuits or replacing electrical parts or PCB assemblies. Receive an 64dB monoscope pattern.
  • Page 25 ELECTRICAL ADJUSTMENTS 2-9: OSD HORIZONTAL Activate the adjustment mode display of Fig. 1-1. Press the VOL. UP/DOWN button on the remote control until the difference of A and B becomes minimum. (Refer to Fig. 2-3) Fig. 2-1 00 OSD 110% Fig.
  • Page 26 ELECTRICAL ADJUSTMENTS PURITY AND CONVERGENCE 3-3: STATIC CONVERGENCE ADJUSTMENTS NOTE Adjust after performing adjustments in section 3-2. NOTE Receive the crosshatch pattern from the color bar Turn the unit on and let it warm up for at least 30 generator. minutes before performing the following adjustments.

  • Page 27: Major Components Location Guide

    MAJOR COMPONENTS LOCATION GUIDE TP401 HS402 R606 TU001 FB401 CP601 FOCUS VOLUME SCREEN VOLUME MAIN PCB J801 TP023 TP022 CRT PCB D3-1...

  • Page 28: Block Diagram

    BLOCK DIAGRAM TU001 CHROMA IC J352 CH UP IC601 M61206FP X602 HEADPHONE_JACK IC351 AN7511 3.579545MHz VOL UP X' TAL MICON IC AUDIO OUT IC101 SOUND AMP SP351 RF AGC OUT CH DOWN OEC7045B CF601 SAW FILTER VIF IN (1) VOL DOWN Q606 AUDIO MUTE VIF IN (2)

  • Page 29: Printed Circuit Boards Main/Crt

    PRINTED CIRCUIT BOARDS MAIN/CRT (INSERTED PARTS) SOLDER SIDE R500_1 S501B L501_1 TH501 CP502 4A125VOR250V TP002 F501 FH502 D504 HEATER HEATER FH501 S501A W804 C502 CP801 C514_1 W068 Q802 Q803 C801 180V 180V D506 C503 Q502 W087 Q801 C501 W026 D512 D508 W074 TP003...
  • Page 30 PRINTED CIRCUIT BOARDS MAIN/CRT (CHIP MOUNTED PARTS) SOLDER SIDE R603 R617 R134 C120 C138 R627 R636 R609 IC101 R611 R634 C655_1 C140 R127 R122 C116 R639 R420 R512 R813...

  • Page 31: Micon/Tuner

    MICON/TUNER SCHEMATIC DIAGRAM ACCESSORY (MAIN PCB) TU001 NJH3022U268 TM101 RC-DW010 ANT001 HPAS-2S780 C003 FROM/TO CHROMA OS101 PIC-28143SY-2 TUNER+5V W837 R002 R001 18K 1/2W 18K 1/2W I2C_OFF MICON IC IC101 OEC7045B C137 R123 OSD_R P50/H.SYNC RED R 4.7K C129 R122 P51/V.SYNC GREEN G OSD_G 4.7K...

  • Page 32: Chroma

    CHROMA SCHEMATIC DIAGRAM (MAIN PCB) FROM TV POWER UNREG+12V Q604 Q605 KTC3203_YT KTC3203_YT Q606 KTC3203_YT 11.3 R639 CF604 EFCT4R5MW5 Q603 KTC3203_YT FROM SOUND/AV C647 R615 CF603 VIDEO_IN EFCT4R5YS5A R638 22K R646 68K C638_1 R634 W806 FROM/TO SOUND/AV R611 R642 D605 AUDIO_OUT AUDIO OUT ACL/ABCL...

  • Page 33: Tv Power

    TV POWER SCHEMATIC DIAGRAM (MAIN PCB) CAUTION: FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, REPLACE ONLY WITH THE SAME TYPE 4A 125V (F501) FUSE. ATTENTION: POUR UNE PROTECTION CONTINUE LES RISQUES D’INCEIE N’UTILISER QUE DES FUSIBLE DE MEME 4A 125V TYPE 4A 125V (F501). TO SOUND/AV D505 SOUND+B...
  • Page 34 DEFLECTION/CRT SCHEMATIC DIAGRAM CP802A CP802B (MAIN PCB) CD802 51048-1000 51048-1000 2EDA3001 FROM CHROMA CLAMP CLAMP CLAMP CLAMP CLAMP G.OUT G.OUT G.OUT G.OUT G.OUT R.OUT R.OUT R.OUT R.OUT R.OUT B.OUT B.OUT B.OUT B.OUT B.OUT V-OUT IC IC401 AN5522 HEATER HEATER HEATER HEATER THERMAL PUMP...

  • Page 35: Sound/Av

    SOUND/AV SCHEMATIC DIAGRAM (MAIN PCB) TO CHROMA J703 (FRONT) AV1-09D-4 R703 AUDIO 2 AUDIO_IN A_IN 820 1/4W V_IN VIDEO 2 VIDEO_IN J702 AV1-09D-3 HEADPHONE_JACK J352 HSJ1403-01-010 C352 R356 12 1/2W FROM TV POWER SOUND_GND SOUND+B CD351_2 SPEAKER CH122301 SP351 FROM MICON/TUNER S08F21 8 OHM R359...

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