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Memorex MT2252 Service Manual

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MT2252
SERVICE MANUAL
COLOR TELEVISION RECEIVER
ORIGINAL
MFR'S VERSION E
Design and specifications are subject to change without notice.

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  • Page 1 MT2252 SERVICE MANUAL COLOR TELEVISION RECEIVER ORIGINAL MFR’S VERSION E Design and specifications are subject to change without notice.

  • Page 2: 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 3: 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 ....................... B-1, B-2 SERVICE MODE LIST ..........................CONFIRMATION OF USING HOURS ......................NOTE FOR THE REPLACING OF MEMORY IC ..................ELECTRICAL ADJUSTMENTS ........................

  • Page 4: General Specifications

    GENERAL SPECIFICATIONS CRT Size / Visual Size 25 inch / 626mmV System CRT Type Normal Deflection degree Magnetic Field BV/BH +0.45G/0.18G Color System NTSC Speaker 2Speaker Position Front Size 1.5 x 2.7 Inch Impedance Sound Output 2.5 + 2.5 W 10%(Typical) 2.0 + 2.0 W NTSC3.58+4.43 /PAL60Hz...
  • Page 5 GENERAL SPECIFICATIONS CH Label Sleep Timer Sound Mute V-chip Rating OSD Language English French Spanish OSD Language Setting English 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 G-10 Remote...
  • Page 6 GENERAL SPECIFICATIONS Game Position CH Label VM Circuit Full OSD Premiere Comb Filter Lines Auto CH Memory Hotel Lock Closed Caption Stable Sound Favorite CH G-12 Accessories Owner's Manual Language English w/Guarantee Card Remote Control Unit Rod Antenna Poles Terminal Loop Antenna Terminal U/V Mixer...
  • Page 7 GENERAL SPECIFICATIONS 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 577 x 620 Design As per Buyer's Description of Origin Drop Test Natural Dropping At 1 Corner / 3 Edges / 6 Surfaces Height (cm) Container Stuffing Sets/40' container...

  • Page 8: Disassembly Instructions

    DISASSEMBLY INSTRUCTIONS 1. REMOVAL OF ANODE CAP 3. After one side is removed, pull in the opposite direction to 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 9 DISASSEMBLY INSTRUCTIONS 4. Insert one end of the Anode Support into the anode button, then the other as shown in Fig. 1-5. Support Fig. 1-5 Confirm that the Support is securely connected. Put on the Rubber Cap without moving any parts. 2.

  • Page 10: 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. Set Key Remocon Key Operations Releasing of V-CHIP PASSWORD.

  • Page 11: Electrical Adjustments

    ELECTRICAL ADJUSTMENTS 1. BEFORE MAKING ELECTRICAL 2. BASIC ADJUSTMENTS ADJUSTMENTS 2-1: RF AGC DELAY Read and perform these adjustments when repairing the Receive an 64dB monoscope pattern. circuits or replacing electrical parts or PCB assemblies. Connect the digital voltmeter to TP001 and the GND. Activate the adjustment mode display of Fig.
  • Page 12 ELECTRICAL ADJUSTMENTS Fig. 2-1 00 OSD Fig. 2-3 2-9: OSD HORIZONTAL 110% 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) 100% Fig.
  • Page 13 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 14: Major Components Location Guide

    MAJOR COMPONENTS LOCATION GUIDE CP351 VR502 TP402 TU001 FB401 TP001 CP601 FOCUS VOLUME SCREEN VOLUME MAIN PCB J801 TP022 TP024 CRT PCB D3-1...

  • Page 15: Block Diagram

    BLOCK DIAGRAM TONE CONTROL IC SOUND DECORDER IC 9V REG. IC IC854 M62420SP IC852 AN5829S IC853 KIA78L09BP-AT Q352 +12V 18 19 22 21 9 10 2 19 MUTE SW IC351 LA4600 Q351 MUTE SW SOUND SPEAKER MEMORY IC CHROMA IC TU001 AMP IC SP351...

  • Page 16: Printed Circuit Boards

    PRINTED CIRCUIT BOARDS MAIN/CRT (INSERTED PARTS) SOLDER SIDE SW105 SW104 SW103 SW102 SW101 R803 Q801 TP022 OS101 R802 R805 FH501 FH502 W041 TP024 R804 C123 W043 F501 6.3A125V R807 W116 R641 W023 C612 D608 X101 TP023 W133 W086 W826 R806 W120 R651 W809...
  • Page 17 PRINTED CIRCUIT BOARDS MAIN/CRT (CHIP MOUNTED PARTS) SOLDER SIDE Q403 Q101 Q609 C554_1 R553 C408_1 R861 R866 IC852 C881 Q351 R864 Q352 C868 Q607 R853 C863 R640 R618 R611 R634 R644 R622 R647 R629 R639 R105 C616 R633 R621 IC601 R816 Q602 C806...
  • Page 18 MICON/TUNER SCHEMATIC DIAGRAM (MAIN PCB) TU001 TECC1040PG32D ACCESSORY TP001 JWF-50K-1 TM101 R25-1088 FROM/TO CHROMA C003 TUNER+5V R001 68K 1W SYNC I2C_OFF Y_VIDEO MICON IC IC101 OEC7044C R123 4.7K OSD_R P50/H.SYNC RED R R122 4.7K P51/V.SYNC GREEN G OSD_G R109 R121 4.7K P00/EXT MUTE BLUE B...
  • Page 19 CHROMA SCHEMATIC DIAGRAM (MAIN PCB) FROM POWER AT+10V 5V REG Q601 2SD734 4.97 5V REG 5V REG Q605 Q604 2SD734 2SD734 15.0 CF604 Q606 R639 EFCT4R5MW5 2SD734 5V REG Q603 2SD734 R615 C647 CF603 SFSH4.5MCB R638 6.8K D607 C661 0.01 1SS133 R646 TO SOUND...
  • Page 20 DEFLECTION/CRT SCHEMATIC DIAGRAM (MAIN PCB) CP802A CD802 CP802B 51048-0510 2E053701 51048-0510 FROM/TO CHROMA CLAMP CLAMP CLAMP CLAMP CLAMP G.OUT G.OUT G.OUT G.OUT G.OUT B.OUT B.OUT B.OUT B.OUT B.OUT R.OUT R.OUT R.OUT R.OUT R.OUT V-OUT IC IC401 LA78041 K001 V_FEEDBACK MG801 8115529 29MMSTAR THERMAL...
  • Page 21 POWER SCHEMATIC DIAGRAM (MAIN PCB) TO CHROMA 6.3A 125V AT+10V CAUTION: FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, REPLACE ONLY WITH THE SAME TYPE FUSE RELAY DRIVE 6.3A 125V(F501) Q504 D516 2SC1815Y ATTENTION: POUR UNE PROTECTION CONTINUE LES RISQUES D’INCEIE 1SS133 N’UTILISER QUE DES FUSIBLE DE MEME TYPE 6.3A 125V(F501) TO DEFLECTION/CRT...
  • Page 22 SOUND SCHEMATIC DIAGRAM (MAIN PCB) FROM/TO MICON/TUNER AUDIO_MUTE 9V REG. IC IC853 KIA78L09BP-AT R864 C881 13.5 1.8K 0.033 B C879 C883 R859 0.022 0.47 4.7K 1.8K TONE 136K AMP1 I2C BUS INTERFACE SIMAMP1 VOLAMP1 6.5K 6.5K 6.5K VOLAMP2 CONTROL SIMAMP2 6.5K LOGIC TONE...

  • Page 23: Micon/Tuner

    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 3 200mV 20µs/div 8 20V 20µs/div 1V 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 24: Power

    WAVEFORMS 16 2V 20µs/div 21 50V 20µs/div 26 200mV 1ms/div 200mV 1ms/div 22 50V 20µs/div 200V 20µs/div POWER 0.5V 1ms/div 10V 5ms/div 0.5V 5µs/div 1V 1ms/div 29 200mV 1ms/div 10V 5ms/div SOUND 25 0.5V 1ms/div 50V 20µs/div 30 200mV 1ms/div NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram.
  • Page 25 WAVEFORMS 31 5.0V 20ms/div 0.5V 1ms/div 0.5V 1ms/div NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram.

  • Page 26: Mechanical Exploded View

    MECHANICAL EXPLODED VIEW J801 PCB110 (CRT PCB) L503 V801 TU001 PCB010 (MAIN PCB) SP351...

  • Page 27: Mechanical Replacement Parts List

    MECHANICAL REPLACEMENT PARTS LIST REF. NO. PART NO. DESCRIPTION 701APJA056 CABINET,FRONT 713WPA0098 GUIDE,REMOCON 7260000306 SHEET,CAUTION 735WPA0439 BUTTON,ASS'Y HEAT SINK HEAT SINK HEAT SINK 741WUA0021 SPRING,EARTH 702APA0121 CABINET,BACK 722A08A074 SHEET,RATING 723000B301 FILM,DECORATION 899HV3T001 HOLDER,ANODE WIRE 762WPA0009 HOLDER,CRT WIRE 8994201000 HOLDER,CRT WIRE 711WPCA021 BADGE BRAND 8995034000 CORD CLIP UL CO.

  • Page 28: Electrical Replacement Parts List

    ELECTRICAL REPLACEMENT PARTS LIST REF. NO. PART NO. DESCRIPTION REF. NO. PART NO. DESCRIPTION RESISTORS DIODES R001 R3X181683J R, METAL 68K OHM 1W ! D503 D2WTRM11C0 DIODE, SILICON RM11C-EIC R134 R002T4103J RC 10K OHM 1/4W ! D504 D2WTRM11C0 DIODE, SILICON RM11C-EIC R135 R00106272J RC...
  • Page 29 ELECTRICAL REPLACEMENT PARTS LIST REF. NO. PART NO. DESCRIPTION P.C.BOARD ASSEMBLIES PCB010 A3I0B0E01A PCB ASS'Y TMX458A PCB110 A3I0B0E11A PCB ASS'Y TCX318A MISCELLANEOUS B502 024AT03482 CORE, BEADS BL02RN2-R62T4 B504 024AT03655 CORE, BEADS BL01RN1-A63T6 B505 024AT03655 CORE, BEADS BL01RN1-A63T6 ! CD501 120R614909 CORD, AC 0R614909 CD801 068M82025A CORD, CONNECTOR...
  • Page 30 M3I0-B0E SPEC.NO. A113525 O/R NO.
  • Page 31 MANUAL DE INSTRUCCIONES 25” MTS STEREO COLOR TELEVISION 25” TELEVISOR COLOR ESTEREO MTS MT2252 MT2252 SERIES A ATTENTION If you purchase a universal remote control from your local retailer, please contact the remote manufacturer for the required programming code. Si usted a comprado un control de remoto universal, por favor comunicace con el fabricante para el codico de programaccion requerido.

  • Page 32: Important Safeguards

    WARNING: TO PREVENT FIRE OR SHOCK HAZARD, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE. NOTE: Please keep all packaging material for at least 90 days in case you need to return this product to your place of purchase or Memorex. IMPORTANT SAFEGUARDS 1. READ INSTRUCTIONS All the safety and operating instructions should be read before the unit is operated.
  • Page 33 13. LIGHTNING To protect your unit during a lightning storm, or when it is left unattended and unused for long periods of time, unplug it from the wall outlet and disconnect the antenna or cable system. This will prevent damage to the unit due to lightning and power line surges.

  • Page 34: Location Of Controls

    FEATURES • 181 Channel Tuner - The tuning system is capable of receiving all 68 VHF/UHF standard broadcast channels that are available in your area. When operating on a cable system, it can tune to the standard VHF channel frequencies plus up to 113 cable channel frequencies.

  • Page 35: Remote Control

    REMOTE CONTROL 4. SLEEP Button - To set the TV to turn off after a preset amount of time, press the SLEEP button on the remote control. The clock will count down 10 minutes each time POWER the button is pressed in the order of 120, 110, 100, ······ 20, 10, 0.
  • Page 36 ANTENNA/CATV CONNECTIONS Combination VHF/UHF Antenna Single 75 ohm Cable 300 ohm Twin-lead Wire Take off the Splitter Splitter 300-75 ohm UHF Antenna ANT. Matching Transformer (not supplied) 300 ohm Twin-lead Wire This television has an extended tuning range and VHF Antenna can tune most cable channels without using a cable Single 75 ohm Cable company supplied converter box.

  • Page 37: Setting Language

    SETTING LANGUAGE This TV can display the on-screen language in English, Spanish or French. On-screen language selection (step 3) will automatically appear on the screen when you press the MENU button initially. Select the language you prefer first, then proceed with the other menu options. Press the MENU button.

  • Page 38: To Memorize Channels

    TO MEMORIZE CHANNELS This TV is equipped with a channel memory feature which AUTOMATIC CHANNEL MEMORY allows channels to skip up or down to the next channel set Press the MENU button. into memory, skipping over unwanted channels. Before selecting channels, they must be programmed into the TV's memory.

  • Page 39: Closed Caption

    SETTING V-CHIP This TV is fitted with a V-CHIP controller which provides you with channel viewing access controls and restrictions. This function is to prevent your children from watching violence or sexual scenes that you may choose to exclude. TV RATING Press the MENU button and press the SET + or –...

  • Page 40: Sound Adjustments

    STEREO AND SEPARATE AUDIO PROGRAM (SAP) The TV is equipped with a feature known as Multi-channel TV LISTENING TO SAP (SEPARATE AUDIO PROGRAM) Sound or MTS. MTS broadcasts greatly enhance TV viewing When the TV is turned on or a channel selection is made, by bringing you programs with high fidelity stereo sound.

  • Page 41: Troubleshooting Guide

    CUSTOMER SERVICE at 1-800-919-3647 Please keep all packaging material for at least 90 days in case you need to return this product to your place of purchase or Memorex. FOR PARTS AND ACCESSORIES, CONTACT FOX INT'L AT 1-800-321-6993" 3K00701B-E...
  • Page 42 MEMO ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○...
  • Page 43 MEMO ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○...
  • Page 44 MT2252 SERIES A SERVICE MANUAL COLOR TELEVISION RECEIVER ORIGINAL MFR’S VERSION A Design and specifications are subject to change without notice.
  • Page 45 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 46: J2-1, J2-2

    CONTENTS A1-1 SERVICING NOTICES ON CHECKING ...................... A1-1 HOW TO ORDER PARTS ........................... A1-1 IMPORTANT ..............................A2-1 CONTENTS ..............................GENERAL SPECIFICATIONS ........................A3-1~A3-4 B-1, B-2 DISASSEMBLY INSTRUCTIONS ....................... SERVICE MODE LIST ..........................CONFIRMATION OF USING HOURS ......................NOTE FOR THE REPLACING OF MEMORY IC ..................ELECTRICAL ADJUSTMENTS ........................

  • Page 47: General Specifications

    GENERAL SPECIFICATIONS G - 1 CRT Size / Visual Size 25 inch / 626mmV System CRT Type Normal Deflection degree Magnetic Field BV/BH +0.45G/0.18G Color System NTSC Speaker 2Speaker Position Front Size 1.5 x 2.7 Inch Impedance Sound Output 2.5 + 2.5 W 10%(Typical) 2.0 + 2.0 W NTSC3.58+4.43 /PAL60Hz...
  • Page 48 GENERAL SPECIFICATIONS 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 G - 1 0 Remote...
  • Page 49 GENERAL SPECIFICATIONS G - 1 1 Features Auto Degauss Auto Shut Off Canal+ CATV Anti-theft Rental Memory(Last CH) Memory(Last Volume) V-Chip Type USA,ORION Type Auto Search CH Allocation Channel Lock Just Clock Function Game Position CH Label VM Circuit Full OSD Premiere Comb Filter Lines...
  • Page 50 GENERAL SPECIFICATIONS G - 1 3 Interface Switch Front Power System Select Main Power SW Sub Power Channel Up/Reset Channel Down/Enter Volume Up/Set Up Volume Down/Set Down Menu: Vol Up + Vol Down Rear AC/DC TV/CATV Selector Degauss Main Power SW Indicator Power Stand-by...

  • Page 51: 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 52 DISASSEMBLY INSTRUCTIONS 4. Insert one end of the Anode Support into the anode button, then the other as shown in Fig. 1-5. Support Fig. 1-5 Confirm that the Support is securely connected. Put on the Rubber Cap without moving any parts. 2.

  • Page 53: 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. Set Key Remocon Key Operations Releasing of V-CHIP PASSWORD.

  • Page 54: Electrical Adjustments

    ELECTRICAL ADJUSTMENTS 1. BEFORE MAKING ELECTRICAL 2. BASIC ADJUSTMENTS ADJUSTMENTS 2-1: RF AGC DELAY Read and perform these adjustments when repairing the Receive an 60dB monoscope pattern. circuits or replacing electrical parts or PCB assemblies. Connect the digital voltmeter to R606. Activate the adjustment mode display of Fig.
  • Page 55 ELECTRICAL ADJUSTMENTS "A" Fig. 2-1 00 OSD Fig. 2-3 2-9: OSD HORIZONTAL 110% 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) 100% Fig.
  • Page 56 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 57: Major Components Location Guide

    MAJOR COMPONENTS LOCATION GUIDE CP351 TP402 VR502 TU001 R606 FB401 CP601 FOCUS VOLUME SCREEN VOLUME MAIN PCB J801 TP022 TP024 CRT PCB D3-1...

  • Page 58: Block Diagram

    BLOCK DIAGRAM TONE CONTROL IC SOUND DECORDER IC 9V REG. IC IC854 M62420SP IC852 AN5829S IC853 KIA78L09BP-AT +12V 18 19 22 21 9 10 2 19 IC351 LA4600 Q351 MUTE SW SOUND SPEAKER MEMORY IC CHROMA IC TU001 AMP IC SP351 IC601 M61206FP IC199...

  • Page 59: Printed Circuit Boards Main/Crt

    PRINTED CIRCUIT BOARDS MAIN/CRT (INSERTED PARTS) SOLDER SIDE TP023 SW105 SW104 SW103 SW102 SW101 R806 OS101 FH501 FH502 R804 W084 R625 W015 _A_V F501 R802 C530 Q608 W014 S501A W013 X101 W012 W011 S501B W010 W002 S808X W120 W857 W072 PH004 R515 Q603...
  • Page 60 PRINTED CIRCUIT BOARDS MAIN/CRT (CHIP MOUNTED PARTS) SOLDER SIDE C554_1 R553 C408_1 R861 R866 C880_1 C879_1 C511_1 IC852 R864 R853 R640 R618 R650 R634 C650_1 C636_1 R639 C618 R633 C616 C114 IC601 R122 R646 IC101 R638 R133 R614 C128_1 R809 R619 R129 C811_1...
  • Page 61 MICON/TUNER SCHEMATIC DIAGRAM (MAIN PCB) TU001 ENV56D66G3 ACCESSORY FROM/TO CHROMA TM101 C003 RC-DW TUNER+5V R001 R002 18K 1/2W 18K 1/2W SYNC I2C_OFF Y_VIDEO MICON IC IC101 OEC7044C R123 4.7K W862 OSD_R P50/H.SYNC RED R W863 R122 4.7K OSD_G P51/V.SYNC GREEN G R109 W864 R121...
  • Page 62 CHROMA SCHEMATIC DIAGRAM (MAIN PCB) FROM POWER R645 AT+10V 5V REG Q601 KTC3203_Y-AT 4.97 5V REG Q604 2SD734(E,F)-AA 15.0 W801 W802 CF604 Q606 R639 TPSRA4M50C00-A0 KTC3203_Y-AT C647 R615 CF603 SFSH4.5MCB R638 10K R646 TO SOUND R634 10K STEREO+5V R642 D605 W830 AUDIO OUT ACL/ABCL...
  • Page 63 DEFLECTION/CRT SCHEMATIC DIAGRAM (MAIN PCB) CP802A CP802B 51048-1010 51048-1010 FROM/TO CHROMA CLAMP CLAMP CLAMP CLAMP CLAMP G.OUT G.OUT G.OUT G.OUT G.OUT B.OUT B.OUT B.OUT B.OUT B.OUT R.OUT R.OUT R.OUT R.OUT R.OUT V-OUT IC IC401 LA78041 V_FEEDBACK HEATER HEATER HEATER HEATER THERMAL V_OUT PROTECTION...
  • Page 64 POWER SCHEMATIC DIAGRAM (MAIN PCB) TO CHROMA AT+10V RELAY DRIVE Q504 D516 KTC3198-AT(Y,GR) 1SS133 TO DEFLECTION/CRT RY501 ALKS325 C516 FBT+8V 500V 470P DEGAUSS COIL L503 8R250009 TO SOUND CP502 R517 D509 TV-50P-02-A1 SOUND+B 21DQ09N 0.39 SOUND_GND R501 TH501_1 ZPB45BL3R0A 3.3 7W PH003 PH004 B504...
  • Page 65 SOUND SCHEMATIC DIAGRAM (MAIN PCB) FROM/TO MICON/TUNER 9V REG IC IC853 KIA78L09BP-AT AUDIO_MUTE R864 C881 13.5 1.8K 0.033 B C879_1 C883_1 R859 0.022 0.47 4.7K 1.8K TONE 136K AMP1 I2C BUS INTERFACE SIMAMP1 VOLAMP1 6.5K 6.5K 6.5K VOLAMP2 CONTROL SIMAMP2 6.5K LOGIC TONE...

  • Page 66: Micon/Tuner

    WAVEFORMS MICON/TUNER 11 1V 20µs/div 1 1V 0.1µs/div 6 0.5V 20µs/div 12 1V 20µs/div 200mV 20µs/div 0.5V 20µs/div 3 200mV 20µs/div 20V 20µs/div 1V 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 67: Sound

    WAVEFORMS 16 2V 20µs/div 21 50V 20µs/div 26 200mV 1ms/div 200mV 1ms/div 22 50V 20µs/div 200V 20µs/div POWER 0.5V 1ms/div 10V 5ms/div 0.5V 5µs/div 1V 1ms/div 29 200mV 1ms/div 10V 5ms/div SOUND 25 0.5V 1ms/div 50V 20µs/div 30 200mV 1ms/div NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram.
  • Page 68 WAVEFORMS 31 5.0V 20ms/div 0.5V 1ms/div 0.5V 1ms/div NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram.

  • Page 69: Mechanical Exploded View

    MECHANICAL EXPLODED VIEW J801 PCB110 (CRT PCB) L503 V801 TU001 PCB010 (MAIN PCB) SP351...

  • Page 70: Mechanical Replacement Parts List

    MECHANICAL REPLACEMENT PARTS LIST REF. NO. PART NO. DESCRIPTION 701APJA056 CABINET,FRONT 713WPA0098 GUIDE,REMOCON 7260000306 SHEET,CAUTION 735WPA0439 BUTTON,ASS'Y 8995034000 CORD CLIP UL CO. 711WPCA021 BADGE BRAND 8994201000 HOLDER,CRT WIRE 741WUA0021 SPRING,EARTH 702APA0121 CABINET,BACK 722A08A077 SHEET,RATING 723000B301 FILM,DECORATION 899HV3T000 HOLDER,ANODE WIRE 762WPA0009 HOLDER,CRT WIRE 8117540B04 SCREW,TAPPING (B0) TRUSS...

  • Page 71: Electrical Replacement Parts List

    ELECTRICAL REPLACEMENT PARTS LIST REF. NO. PART NO. DESCRIPTION REF. NO. PART NO. DESCRIPTION RESISTORS DIODES ! R401 R4X5T6104F R, METAL 100K OHM 1/6W D512 D2WXN40050 DIODE, SILICON 1N4005-EIC ! R404 R903N8272J 2.7K OHM 1/8W D513 D2WXN40050 DIODE, SILICON 1N4005-EIC ! R405 R4X5T6223F R, METAL 22K OHM 1/6W...
  • Page 72 ELECTRICAL REPLACEMENT PARTS LIST REF. NO. PART NO. DESCRIPTION MISCELLANEOUS B504 024HT03553 CORE, BEADS W5RH3.5X5X1.0 CD501 1207415905 CORD, AC 7415905 CD805 06CU82039A CORD CONNECTOR SM1098-009-1A CF601 1022T45R73 FILTER, SAW SAFGP45M7VHCZR CF603 1012T4R509 FILTER, CERAMIC SFSH4.5MCB-TF21 CF604 1012T4R519 FILTER, CERAMIC TRAP TPSRA4M50C00-A0 CP351 069W14T299 CONNECTOR PCB SIDE...
  • Page 73 SPEC.NO. M3K0-07E A143508 O/R NO.

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