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Memorex MT2206 Series A Service Manual

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MT2206 Series A
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 MT2206 Series A SERVICE MANUAL COLOR TELEVISION RECEIVER ORIGINAL MFR'S VERSION A 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 1. REMOVAL OF ANODE CAP ......................... B1-1 2. REMOVAL AND INSTALLATION OF FLAT PACKAGE IC ..............B2-1, B2-2 SERVICE MODE LIST .............................

  • Page 4: General Specifications

    GENERAL SPECIFICATIONS G - 1 CRT Size / Visual Size 20 inch / 480.0mmV S ystem CRT Type Normal Deflection degree Magnetic Field BV/BH +0.45G/0.18G Color System NTSC Speaker 2Speaker Position Front Size 2 x 4.7 Inch Impedance Sound Output 2.5+2.5 W 10%(Typical) 2.0+2.0 W...
  • Page 5 GENERAL SPECIFICATIONS Channel(TV/Cable) CH Label Sleep Timer Sound Mute V-chip Rating G - 8 OSD Language English French Spanish G - 9 Clock and Sleep Timer Max Time 120 Min Timer Step On/Off Timer Program(On Timer / Off Timer) Wake Up Timer Timer Back-up (at Power Off Mode) more than G - 1 0...
  • Page 6 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 Surround Energy Star Power On Memory Favorite CH G - 1 2 Accessories Owner's Manual Language...
  • Page 7 GENERAL SPECIFICATIONS G - 1 4 Size Approx. W x D x H (mm) 590 x 492 x 447 G - 1 5 W eig ht Net (Approx.) 21.0kg ( 46.3 lbs) Gross (Approx.) 23.8kg ( 52.5lbs) G - 1 6 C arton Master Carton Content...

  • 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: Removal And Installation Of Flat Package Ic

    DISASSEMBLY INSTRUCTIONS REMOVAL AND INSTALLATION OF When IC starts moving back and forth easily after desoldering completely, pickup the corner of the IC using FLAT PACKAGE IC a tweezers and remove the IC by moving with the IC desoldering machine. (Refer to Fig. 2-3.) REMOVAL NOTE Put the Masking Tape (cotton tape) around the Flat...
  • Page 10 DISASSEMBLY INSTRUCTIONS INSTALLATION When bridge-soldering between terminals and/or the soldering amount are not enough, resolder using a Thin- Take care of the polarity of new IC and then install the tip Soldering Iron. (Refer to Fig. 2-8.) new IC fitting on the printed circuit pattern. Then solder each lead on the diagonal positions of IC temporarily.

  • Page 11: 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 VOL.

  • Page 12: Electrical Adjustments

    ELECTRICAL ADJUSTMENTS BEFORE MAKING ELECTRICAL 2. BASIC ADJUSTMENTS ADJUSTMENTS 2-1: CUT OFF Read and perform these adjustments when repairing the Adjust the unit to the following settings. circuits or replacing electrical parts or PCB assemblies. R.DRIVE=64, B.DRIVE=64, R.BIAS=64, G.BIAS=64, CAUTION B.BIAS=64, BRI CENT=110, CONT MAX=90.
  • Page 13 ELECTRICAL ADJUSTMENTS 2-8: VERTICAL LINEARITY NOTE: Adjust after performing adjustments in section 2-7. After the adjustment of Vertical Linearity, reconfirm the Vertical Position and Vertical Size adjustments. Receive the monoscope pattern. Using the remote control, set the brightness and contrast to normal position.
  • Page 14 ELECTRICAL ADJUSTMENTS Method (2) Set the multi-sound signal generator L-ch=1KHz, R-ch =Non input and receive the RF. Connect the oscilloscope to the pin 7 of CP601. Activate the adjustment mode display of Fig. 1-1 and press the channel button (26) on the remote control to select "SEP 1".
  • Page 15 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 16 ELECTRICAL ADJUSTMENTS 4. ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE (WIRING CONNECTION) CRT PCB TP024 CP806 W876 W874 TP022 CP802B CP803B CP803A CP601 VR401 FB401 VR402 CRT DY TP402 TU001 CP401 CP1001 VR502 SPEAKER CP502 L503 DEGAUSS COIL CP802A S501A S501B AC IN J710 J711 J712...

  • Page 17: Block Diagram

    BLOCK DIAGRAM CH. DOWN MICON/CHROM IC VOL. DOWN IC101 OEC7091A CH. UP RGB Proc.2 VOL. UP Q804 OSD SW CONTRAST BRIGHTNESS RED AMP RGB OUTPUT Stage POWER Chroma DRIVE Proc. Q805 CUT OFF ACC/C-BPF OS101 HV BLK GREEN AMP RGB Proc.1 APC/KILLER RGB MATRIX TINT/DEMO...

  • Page 18: Printed Circuit Boards

    PRINTED CIRCUIT BOARDS MAIN/CRT (INSERTED PARTS) SOLDER SIDE J710 SW101 SW104 SW103 J711 SW105 SW102 J712 OS101 W012 F501 FH502 W876 C505 FH501 CD501 Q603 CP806_1 S501B Q602 W009 W008 Q607 W875 CP802A W006 L501 Q610 R500 J801 R806_2 Q806 Q804 Q805 C530_1...
  • Page 19 PRINTED CIRCUIT BOARDS MAIN/CRT (CHIP MOUNTED PARTS) SOLDER SIDE IC901 R004 R003 B_SHORT R006 R437 R507 R1005 C519 R1003 C512 R505 R1008 C603 C609 R814 C809 R817 R604 R627 R617 R609 R610 C629 R734 R128 R740 R126...
  • Page 20 MICON/CHROMA/TUNER SCHEMATIC DIAGRAM (MAIN PCB) H.CTL ACCESSORY Q607 Q609 KTC3198 R621 KTC3198 R618 TM101 8.2K 1/4W C115 RC-DW130 FROM/TO DEFLECTION/CRT 100P CH C114 R608 C118 CLAMP 100P CH 1K 1/4W CLAMP_OFF C101 6.3V R110 V_OUT 0.01 F R109 C630 V_FEEDBACK AT+5V ABCL H_OUT...
  • Page 21 DEFLECTION/CRT SCHEMATIC DIAGRAM (MAIN PCB) FROM/TO MICON/CHROMA/TUNER CP802A B2013H02-6P CP802B B2013H02-6P CLAMP CLAMP CLAMP CLAMP CLAMP CLAMP_OFF CLAMP_OFF CLAMP_OFF CLAMP_OFF CLAMP_OFF 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_FEEDBACK V-OUT IC IC401 AN5522 CP803A B2013H02-4P CP803B B2013H02-4P...
  • Page 22 TV POWER SCHEMATIC DIAGRAM (MAIN PCB) TO MICOM/CHROMA/MICON W836 REMOTE+12V W812 UNREG+12V RELAY DRIVE Q504 D516 KTC3198 1SS133 TO DEFLECTION/CRT UNREG+12V RY501 ALKS321 B503 C516 W848 DEGAUSS COIL L503 500V 0.001 TO SOUND W5RH3.5X5X1.0 8R200026 CP502 A1561WV2-2P SOUND+B TH501 B59203-S1060-B14 D505 30DF6-FC SOUND_GND...
  • Page 23 SOUND SCHEMATIC DIAGRAM (MAIN PCB) FROM/TO MICON/CHROMA/TUNER R308 W894 AUDIO_MUTE VOLUME R311 W852 OUT SW IIC Decoder St.PLL Pilot Input Switch L-R Filter L-R Demod Cancel Matrix De-Emph (L-R)/SAP Pilot Filter Filter Filter 75us L+R Filter L+R Demod Stereo Noise Filter Cancel SAPout...
  • Page 24 AV SCHEMATIC DIAGRAM (MAIN PCB) VIDEO_3_IN VIDEO IN(FRONT) J710 MSP-281V4-A AUDIO_L IN(FRONT) C701 J711 R734 L3_IN MSP-281V1-A AUDIO_R IN(FRONT) C702 J712 R733 R3_IN MSP-281V3-A D704 MTZJ6.8B TO SOUND FRONT_AUDIO_L FRONT_AUDIO_R FROM/TO TV POWER TO MICON/CHROMA/TUNER W860 VIDEO_IN FROM/TO COMB/FILTER PCB010 TMC563 AUDIO SIGNAL NOTE:THE DC VOLTAGE AT EACH PART WAS MEASURED...

  • Page 25: Micon/Chroma/Tuner

    WAVEFORMS MICON/CHROMA/TUNER 10V 5ms/div 1V 20µs/div 20V 20µs/div DEFLECTION/CRT 10V 5ms/div 3 200mV 20µs/div 14 0.5V 5ms/div 15 20V 20µs/div 50V 20µs/div 0.5V 5ms/div 5 1V 20µs/div 16 2V 20µs/div 21 50V 20µs/div 22 50V 20µs/div 200V 20µs/div 6 1V 20µs/div NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram.

  • Page 26: Sound

    WAVEFORMS SOUND 25 0.5V 1ms/div 0.5V 1ms/div 26 200mV 1ms/div 0.5V 1ms/div 200mV 1ms/div 28 200mV 1ms/div 31 200mV 1ms/div NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram.

  • Page 27: Mechanical Exploded View

    MECHANICAL EXPLODED VIEW J801 PCB110 (CRT PCB ASS'Y) L503 FB401 V801 TU001 SP1002 101D PCB010 (MAIN PCB ASS'Y) 101C SP1001 101B 101C 101D 101E 101A...

  • Page 28: Mechanical Replacement Parts List

    MECHANICAL REPLACEMENT PARTS LIST REF. NO. PART NO. DESCRIPTION A3M907X720 CABINET,FRONT ASSY 101A 701WPJC309 CABINET,FRONT 101B 713WPA0205 GUIDE,REMOCON 101C 735WPBA785 BUTTON,FRAME 101D 800WQ00045 FELT SHEET 5x150xT0.5 A3M907X740 CABINET,BACK ASS'Y 723000B881 FILM,DECORATION 800WQ00068 FELT,SHEET 18x350xT=0.5 7230006755 SHEET,CAUTION 726000A043 SHEET,CRT NO 722A08A140 SHEET,RATING 769WSAA005 WASHER CRT T=1 741WUA0001 SPRING,EARTH...

  • Page 29: Electrical Replacement Parts List

    ELECTRICAL REPLACEMENT PARTS LIST REF. NO. PART NO. DESCRIPTION REF. NO. PART NO. DESCRIPTION RESISTORS DIODES R401 R3X181221J R,METAL OXIDE 220 OHM 1W D805 D1VT001330 DIODE,SILICON 1SS133T-77 ! R408 R4X5T6472F R,METAL 4.7K OHM 1/6W D806 D1VT001330 DIODE,SILICON 1SS133T-77 ! R409 R4X5T6153F R,METAL 15K OHM 1/6W ! R424...
  • Page 30 ELECTRICAL REPLACEMENT PARTS LIST REF. NO. PART NO. DESCRIPTION MISCELLANEOUS ! RY501 0560V20115 RELAY ALKS321 ! SP1001 070C546004 SPEAKER SG04H02BRA ! SP1002 070C546004 SPEAKER SG04H02BRA ! TH501 D8EE0B1400 DEGAUSS ELEMENT B59203-S1060-B14 TM101 076N0DW130 TRANSMITTER RC-DW130 ! TU001 0163300005 RF UNIT 115-V-K015AR_B ! V801 098Y210434...
  • Page 31 M3M9-07X SPEC.NO. W363006 O/R NO.
  • Page 32 MT2206 SERVICE MANUAL COLOR TELEVISION RECEIVER ORIGINAL MFR'S VERSION B Design and specifications are subject to change without notice.
  • Page 33 PRINTED CIRCUIT BOARDS MAIN/CRT (CHIP MOUNTED PARTS) SOLDER SIDE R141 R534 R532 R533 R437 R733 C513 IC901 C909 R903 R907 C1004 R1008 R1006 R615 R622 C618_1 C602 C655 R628 C606 R646 C801 R809 R619 R122 R104 C140 R129 R134 C103 R602 R118 IC101...
  • Page 34 MICON/TUNER SCHEMATIC DIAGRAM (MAIN PCB) ACCESSORY TU001 ENV56DB6G3 TM101 RC-DW040 R607 R101 R126 C003 2.7K R128 FROM/TO CHROMA OS101 PIC-37143SY TUNER+5V FROM POWER R001 AT+40V 2.7K 1/4W R140 47 1/4W R109 MICON IC IC101 OEC7072A TO DEFLECTION/CRT 4.94 4.94 AUDIO MUTE H_CTL AT+5V 4.94...
  • Page 35 CHROMA SCHEMATIC DIAGRAM (MAIN PCB) FROM TV POWER UNREG+12V Q603 R629 KTC3203_Y Q604 Q605 Q606 KTC3203_Y KTC3203_Y KTC3203_Y 11.3 Q608 KTC3203_Y FROM AV/JACK R616 C627 C647 W801 VIDEO_IN R623 1K 1/4W 1/4W CF603 SFSRA4M50CF00-A0 R646 C626 8.65 7.95 3.29 8.7 2.12 3.25 C638...
  • Page 36 DEFLECTION/CRT SCHEMATIC DIAGRAM (MAIN PCB) CP802A CP802B B2013H02-10P B2013H02-10P 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 AN5522 V_FEEDBACK HEATER HEATER HEATER HEATER THERMAL V_OUT PROTECTION...
  • Page 37 POWER SCHEMATIC DIAGRAM (MAIN PCB) TO CHROMA 6.3A 125V UNREG+12V CAUTION: FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, REPLACE ONLY WITH THE SAME TYPE FUSE 6.3A 125V(F501) ATTENTION: POUR UNE PROTECTION CONTINUE LES RISQUES D’INCEIE N’UTILISER QUE DES FUSIBLE DE MEME TYPE 6.3A 125V(F501) TO DEFLECTION/CRT D518...
  • Page 38 SOUND SCHEMATIC DIAGRAM (MAIN PCB) FROM/TO MICON/TUNER VOLUME AUDIO_MUTE OUT SW IIC Decoder St.PLL Pilot Input Cancel Switch L-R Filter L-R Demod Matrix De-Emph (L-R)/SAP Pilot Filter Filter Filter 75us L+R Filter L+R Demod Stereo Noise Filter Cancel SAPout Demod Filter Filter Offset...
  • Page 39 JACK/SOUND SCHEMATIC DIAGRAM (MAIN PCB) FRONT_A/V_IN(STEREO) J702 JPJ1187-010010 CD701 CU243501 C702 R733 A_IN_R C701 A_IN_L R734 V_IN CP701A CP701B B2013H02-4P A2001WV2-4P TO SOUND FRONT_AUDIO_L FRONT_AUDIO_R PCB250 TEBA98 W863 TO CHROMA VIDEO_IN PCB010 TMB541 AUDIO SIGNAL NOTE: THE DC VOLTAGE AT EACH PART WAS MEASURED NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME TUNER VIDEO SIGNAL WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST...
  • Page 40 WAVEFORMS MICON/TUNER 12 1V 20µs/div 200mV 20µs/div 1 1V 0.1µs/div 1V 20µs/div 20V 20µs/div 0.5V 20µs/div DEFLECTION/CRT 3 200mV 20µs/div 14 0.5V 5ms/div 9 200mV 20µs/div 200mV 5ms/div 15 20V 20µs/div 0.5V 5ms/div CHROMA 11 1V 20µs/div 6 0.5V 20µs/div 16 2V 20µs/div NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram.
  • Page 41 WAVEFORMS 22 50V 20µs/div 200V 20µs/div 0.5V 1ms/div SOUND 10V 5ms/div 25 0.5V 1ms/div 26 200mV 1ms/div 10V 5ms/div 50V 20µs/div 200mV 1ms/div 21 50V 20µs/div 0.5V 1ms/div NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram.
  • Page 42 MECHANICAL EXPLODED VIEW J801 PCB110 (CRT PCB) L503 FB401 V801 TU001 SP1002 PCB010 (MAIN PCB) SP1001 PCB250 (AV PCB)
  • Page 43 MECHANICAL REPLACEMENT PARTS LIST REF. NO. PART NO. DESCRIPTION A3L703X720 CABINET,FRONT ASSY 701WPJB653 CABINET,FRONT 702WPA0901 CABINET,BACK 899HV3T000 HOLDER,ANODE WIRE 722A08A111 SHEET,RATING 723000A900 FILM,DECORATION 741WUA0001 SPRING,EARTH 713WPA0205 GUIDE,REMOCON 7230006818 SHEET,CAUTION 735WPBA388 BUTTON,FRAME 800WQ00045 FELT SHEET 8995034000 CORD CLIP UL CO. 7220001107 SHEET,HWC 7220001119 SHEET,CSA WARNING...
  • Page 44 ELECTRICAL REPLACEMENT PARTS LIST REF. NO. PART NO. DESCRIPTION REF. NO. PART NO. DESCRIPTION RESISTORS I C S ! R407 R002T22R2J RC 2.2 OHM 1/2W ! IC401 I01TD55220 AN5522 ! R408 R4X5T6472F R,METAL 4.7K OHM 1/6W ! IC501 0002E00610 PHOTO COUPLER LTV-817M-VB ! R424 R4X5T6183F R,METAL...
  • Page 45 ELECTRICAL REPLACEMENT PARTS LIST REF. NO. PART NO. DESCRIPTION MISCELLANEOUS FH502 06710T0006 HOLDER,FUSE EYF-52BC OS101 077Q037003 REMOTE RECEIVER PIC-37143SY S101 WHL6038038 FLAT CABLE AWG26 10C BLACK 380MM ! SP1001 070C546004 SPEAKER SG04H02BRA ! SP1002 070C546004 SPEAKER SG04H02BRA TH501 DF5EL3R0A0 DEGAUSS ELEMENT ZPB45BL3R0A TM101 076N0DW040 TRANSMITTER...
  • Page 46 M3L7-03X SPEC.NO. W243007 O/R NO.
  • Page 47 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 48: J2-1, J2-2

    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 1. REMOVAL OF ANODE CAP ......................B1-1 2. REMOVAL AND INSTALLATION OF FLAT PACKAGE IC ............. B2-1, B2-2 SERVICE MODE LIST ..........................

  • Page 49: General Specifications

    GENERAL SPECIFICATIONS G - 1 CRT Size / Visual Size 20 inch / 508.0mmV System CRT Type Normal Deflection degree Magnetic Field BV/BH +0.45G/0.18G Color System NTSC Speaker 2Speaker Position Front Size 2 x 4.7 Inch Impedance Sound Output 2.5+2.5 W 10%(Typical) 2.0+2.0 W NTSC3.58+4.43 /PAL60Hz...
  • Page 50 GENERAL SPECIFICATIONS 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 51 GENERAL SPECIFICATIONS Just Clock Function Game Position CH Label VM Circuit Full OSD Premiere Comb Filter Lines Auto CH Memory Hotel Lock Closed Caption Stable Sound Energy Star Favorite CH G - 1 2 Accessories Owner's Manual Language English /French w/Guarantee Card Remote Control Unit Rod Antenna...
  • Page 52 GENERAL SPECIFICATIONS G - 1 6 Ca rton Master Carton Content ---- Sets Material Dimensions W x D x H(mm) x -- x -- Description of Origin Gift Box Material Double /White Dimensions W x D x H(mm) x 575 x 529 Design As per Buyer's...

  • Page 53: 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 54: Removal And Installation Of Flat Package Ic

    DISASSEMBLY INSTRUCTIONS REMOVAL AND INSTALLATION OF When IC starts moving back and forth easily after desoldering completely, pickup the corner of the IC using FLAT PACKAGE IC a tweezers and remove the IC by moving with the IC desoldering machine. (Refer to Fig. 2-3.) REMOVAL NOTE Put the Masking Tape (cotton tape) around the Flat...
  • Page 55 DISASSEMBLY INSTRUCTIONS INSTALLATION When bridge-soldering between terminals and/or the soldering amount are not enough, resolder using a Thin- Take care of the polarity of new IC and then install the tip Soldering Iron. (Refer to Fig. 2-8.) new IC fitting on the printed circuit pattern. Then solder each lead on the diagonal positions of IC temporarily.

  • Page 56: 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 57: When Replacing Eeprom (Memory) Ic

    WHEN REPLACING EEPROM (MEMORY) IC If a service repair is undertaken where it has been required to change the MEMORY IC, the following steps should be taken to ensure correct data settings while making reference to TABLE 1. Table 1 Enter DATA SET mode by setting VOLUME to minimum.

  • Page 58: Electrical Adjustments

    ELECTRICAL ADJUSTMENTS BEFORE MAKING ELECTRICAL 2. BASIC ADJUSTMENTS ADJUSTMENTS 2-1: RF AGC 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 63dB monoscope pattern. Connect the digital voltmeter to the W062.
  • Page 59 ELECTRICAL ADJUSTMENTS 2-6: SUB TINT/SUB COLOR 2-8: VERTICAL SIZE NOTE: Adjust after performing adjustments in section 2-8. Receive the color bar pattern. Connect the oscilloscope to TP024. Receive the monoscope pattern. Activate the adjustment mode display of Fig. 1-1 and Using the adjustment control, set the brightness and press the channel button (22) on the remote control to contrast to normal position.
  • Page 60 ELECTRICAL ADJUSTMENTS 2-12: SEPARATION 1, 2 Please do the method (1) or method (2) adjustment. Method (1) Set the multi-sound signal generator for each different L-ch and R-ch frequency (Ex. L-ch=2KHz, R-ch=400Hz) and receive the RF. Connect the oscilloscope to the pin 6 and pin 7 of CP601. Activate the adjustment mode display of Fig.
  • Page 61 ELECTRICAL ADJUSTMENTS 3-3: STATIC CONVERGENCE PURITY AND 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 62 ELECTRICAL ADJUSTMENTS 4. ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE (WIRING CONNECTION) CRT PCB CP806 CP701A TP024 TP022 J702 J801 CP802B AV PCB CP801 CD801 CP802A CP601_1 FB401 TP402 CP701B CP401_1 VR502 IC901 T501 CP1001 CD501 SPEAKER S501A S501B MAIN PCB...

  • Page 63: Block Diagram

    BLOCK DIAGRAM SOUND DECORDER IC IC901 AN5829S 22 21 24 18 19 Q1001 MUTE SW TU001 CHROMA IC IC1001 AN7522 IC601 M61250FP SOUND SP1002 51 AUDIO OUT AMP IC SP1001 RF AGC OUT X' TAL CF601 VIF IN(1) SAW FILTER X602 MICON IC 3.579545MHz...

  • Page 64: Printed Circuit Boards Main/Crt/Audio

    PRINTED CIRCUIT BOARDS MAIN/CRT/AUDIO (INSERTED PARTS) SOLDER SIDE OS101 SW105 SW104 SW103 SW102 SW101 R140 W042 _A_V Q405 R626 6.3A125VOR250V D616 W819 FH502 CP701A J702 R504 D613 FH501 F501 D615 S501B R613 S802Y S501A R627 W816 Q607 R631 R114 R617 C621 R630 L501...

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