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Insignia IS-TV040923 Service Manual

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SERVICE MANUAL
COLOR TELEVISION RECEIVER
IS-TV040923
All the specifications and features are subject to change without notice.
S/M CODE NO. M3T111DASM
ORIGINAL
DATE OF ISSUE 3/2005
VERSION (A)

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  • Page 1 SERVICE MANUAL COLOR TELEVISION RECEIVER IS-TV040923 All the specifications and features are subject to change without notice. S/M CODE NO. M3T111DASM ORIGINAL DATE OF ISSUE 3/2005 VERSION (A)

  • Page 2: Table Of Contents

    TABLE OF CONTENTS TABLE OF CONTENTS........................... A1-1 IMPORTANT SERVICE SAFETY INFORMATION ..................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 ............................. CONFIRMATION OF HOURS USED ......................

  • Page 3: Important Service Safety Information

    IMPORTANT SERVICE SAFETY INFORMATION Operating the receiver outside of its cabinet or with its The picture tube used in this receiver employs integral back removed involves a shock hazard. Work on implosion protection. Replace with a tube of the same these models should only be performed by those who type number for continued safety.

  • Page 4: General Specifications

    GENERAL SPECIFICATIONS CRT Size / Visual Size 27 inch / 676.0mmV System CRT Type Normal Magnetic Field BV/BH +0.45G/0.18G Color System NTSC Speaker 2Speaker Position Front Size 2.0 x 3.5 Inch Impedance Sound Output 2.5 + 2.5 W 10%(Typical) NTSC3.58+4.43 /PAL60Hz Tuning Broadcasting System System M...
  • Page 5 GENERAL SPECIFICATIONS Back Light Stereo,Audio Output,SAP Video Color Stream Channel(TV/Cable) CH Label Sleep Timer Sound Mute V-chip Rating OSD Language English French Spanish 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...
  • Page 6 GENERAL SPECIFICATIONS CATV Anti-theft Rental Memory(Last CH) Memory(Last Volume) V-Chip Type USA, ORION Type Auto Search CH Allocation Tone Control 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...
  • Page 7 GENERAL SPECIFICATIONS On Timer Terminals Front Video Input Audio Input RCA x 2 Other Terminal Rear Video Input(Rear1) Video Input(Rear2) Audio Input(Rear1) RCA x 2 Audio Input(Rear2) Video Output Audio Output S-Input Color Stream Diversity Ext Speaker DC Jack 12V(Center +) VHF/UHF Antenna Input F Type AC Outlet...

  • Page 8: 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 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 Masking Tape (cotton tape) around the Flat Package...
  • 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 is provided with the following SERVICE MODES so you can repair, examine and adjust easily. To enter to the Service Mode, press both set key and remote control key for more than 2 seconds. Set Key Remocon Key Operations VOL.

  • Page 12: Electrical Adjustments

    ELECTRICAL ADJUSTMENTS 1. ADJUSTMENT PROCEDURE 2. BASIC ADJUSTMENTS Read and perform these adjustments when repairing the 2-1: CONSTANT VOLTAGE circuits or replacing electrical parts or PCB assemblies. Place the set in AV MODE without signal. CAUTION Connect the digital voltmeter to the TP401. Adjust the VR502 until the digital voltmeter is 120 ±...
  • Page 13 ELECTRICAL ADJUSTMENTS 2-6: VERTICAL SIZE 2-11: SEPARATION 1, 2 Receive the monoscope pattern. Please do the method (1) or method (2) adjustment. Using the remote control, set the brightness and contrast Method (1) to normal position. Set the multi-sound signal generator for each different L-ch Activate the adjustment mode display of Fig.
  • Page 14 ELECTRICAL ADJUSTMENTS 2-13: BRIGHT CENT Receive the monoscope pattern. (RF Input) Using the remote control, set the brightness and contrast to normal position. Activate the adjustment mode display of Fig. 1-1 and press the channel button (13) on the remote control to select "BRI CENT".
  • Page 15 ELECTRICAL ADJUSTMENTS 3-3: STATIC CONVERGENCE 3. 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.
  • Page 16 ELECTRICAL ADJUSTMENTS 4. ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE (WIRING CONNECTION) CRT PCB TP024 TP022 J801 CP802B CP803B CD802 CD803 CP803A J705 J701 CP601 VR403 VR401 FB401 VR404 VR402 TU001 VR502 TP401 CP1001 DEGAUSS COIL SPEAKER CP502 CP802A S501B CD501 S501A J712 J710 J711...

  • Page 17: Troubleshooting Guide

    TROUBLESHOOTING GUIDE NO POWER Is the voltage at the point (A) Is the voltage at pin G Check Q501 and associated circuit. in the Figure DC144V ? of Q501 DC5V ? Check Q502 and associated circuit. T502 Check R501 and check associated Is the voltage at the point (B) in the Figure DC164V ? circuit.
  • Page 18 TROUBLESHOOTING GUIDE NO RASTER Does the RASTER Is the voltage of pin 4 of Check the output circuit and appear at maximum associated circuit. CP803 DC184V ? BRIGHT/CONTRAST ? Check the 180V line. Is the high voltage of Is the heater voltage at Contact defects of CRT or CRT ANODE 27KV~28KV ? pin 10 of J801 AC6.4V ?
  • Page 19 TROUBLESHOOTING GUIDE NO COLOR Are the waveforms at pin 6, Defect of CRT or contact defects 8 and 11 of J801 normal ? of J801. Are the waveforms at pin 3, Check the output circuit and 4 and 5 of CP802 normal ? associated circuit.
  • Page 20 TROUBLESHOOTING GUIDE NO VERTICAL Is the waveform at pin Check DY. 6 of CP401 normal ? Is the waveform at pin Check the circuit from pin 5 of 5 of IC401 normal ? IC401 to CP401. Check IC401 and check Is the waveform at pin 7 Is the waveform at pin associated circuit.
  • Page 21 TROUBLESHOOTING GUIDE NO SOUND Is sound setting appropriate ? Is the waveforms at pin Check speaker. 7 and 12 of IC1001? Is the Audio signal input at Check IC901 and associated circuit . pin 23 and pin 24 of IC901? Check J711, J712 and associated circuit.

  • Page 22: Ic Descripion

    IC DESCRIPTION OEC7091C (IC101) PIN NAME DESCRIPTIONS Function CNVSS I/O Ground. I Ground. XOUT O Not used. TEST1 I Ground. MCU VCC I 5V. TEST0 Ground. FILT I Condenser connection for FILT. I/O Condenser connection for HLT. VHOLD I/O Condenser connection for V.HOLD. CVIN I/O Composite Video input terminal.
  • Page 23 IC DESCRIPTION OEC7091C (IC101) PIN NAME DESCRIPTIONS Function Not used. HVCO F/B Condenser connection for HVCO F/B. AFC FILTER Condenser connection for AFC FILTER. DEF GND Ground. FBP IN Input terminal for H-SYNC. H OUT Output terminal for H.OUT. DEF VCC Not used.

  • Page 24: Semiconductor Base Connections

    SEMICONDUCTOR BASE CONNECTIONS DIODE RD47FBD-3 1N4002-PAN 21DQ09N-TA2B1 AN5829S-E1V AT24C04N-10SU-2.OEC7091C AN17805A 1N4937 1N4937-PAN RM11C-EIC 1N4937-B-EIC 30DF6-FC 1SS133T-77 PS106R ERD07-15L50 FE201-6L49 MTZJ12B T-77 MTZJ18B T-77 MTZJ2.2B T-77 MTZJ33B T-77 MTZJ4.7B T-77 MTZJ5.1B T-77 MTZJ5.6B T-77 MTZJ8.2B T-77 MTZJ9.1B T-77 TRANSISTOR LA78041 PS2561AL1-1-V(W) KTA1266-AT(Y,GR) KTC3198-AT(Y,GR)2SC4159(D,E) 2SK3326(2) 2SC4217(D,E)-RAC KTC3199_Y-AT...

  • Page 25: Block Diagram

    BLOCK DIAGRAM J705 R. SIGNAL G. SIGNAL B. SIGNAL DEFLECTION SIGNAL CH. DOWN AUDIO SIGNAL MICON/CHROMA IC TUNER SIGNAL VOL. DOWN IC101 OEC7091C LUMINANCE SIGNAL 24 26 COLOR SIGNAL CH. UP RGB Proc.2 VOL. UP Q801, Q804 OSD SW CONTRAST BRIGHTNESS RED AMP RGB OUTPUT Stage POWER...

  • Page 26: Printed Circuit Boards Main/Crt

    PRINTED CIRCUIT BOARDS MAIN/CRT (INSERTED PARTS) SOLDER SIDE J711 J710 SW105 J712 W012 SW102 SW101 SW104 SW103 R603_1 TP024 TCD461D C505 F501 FH501 Q603 W011 S501A Q608 TP022 W815 R630 D604 W010 W031 S501B Q602 TP023 Q607 R629_1 W009 CD802A CP802A W007 R500...
  • Page 27 PRINTED CIRCUIT BOARDS MAIN/CRT (CHIP MOUNTED PARTS) SOLDER SIDE R722 R708 R707 Q407 R004 R003 Q901 TMD605D Q902 R532 R533 R534 Q507 IC901 R006 R1019 Q1003 R129 R601 R123 R113 R115 R131 IC199_1 R813 R604 R809 R816 R627 C642 R617 R810 R609 R621...
  • Page 28 MICON/CHROMA/TUNER SCHEMATIC DIAGRAM (MAIN PCB) ACCESSORY H.CTL Q607 R621 KTC3198 FROM AV R618 TM101 Y_IN RC-DW180 8.2K 1/4W FROM/TO DEFLECTION/CRT R608 C118_2 C630_1 CLAMP R124 1/4W 1/4W C653 C101 V_OUT R110 C632_1 0.01 R109 V_FEEDBACK AT+5V ABCL P.CON+8V[B] H_OUT X-RAY R108 100 1/4W C629 C623_1...
  • Page 29 DEFLECTION/CRT SCHEMATIC DIAGRAM (TV MT PCB) FROM/TO MICON/CHROMA/TUNER CP802A B2013H02-5P CP802B B2013H02-5P C813 CLAMP CLAMP CLAMP CLAMP CLAMP 0.001 G.OUT G.OUT G.OUT G.OUT G.OUT R.OUT R.OUT R.OUT R.OUT R.OUT V-OUT IC IC401 LA78041 B.OUT B.OUT B.OUT B.OUT B.OUT V_OUT THERMAL CP803A B2013H02-4P CP803B B2013H02-4P...
  • Page 30 POWER SCHEMATIC DIAGRAM (TV MT PCB) D516 1SS133 RELAY DRIVE TO DEFLECTION/CRT R521 Q504 KTC3198 UNREG+18V RY501 150 2W G5PA-1-SA(WEC) T501 81400694 15.6 C516 TO SOUND 140.5 15.6 W848 R517_1 500V 0.0022 SOUND+B 140.5 0.39 DEGAUSS COIL L503 D505 144.0 8R270010 CP502 A1561WV2-2PK...
  • Page 31 SOUND SCHEMATIC DIAGRAM (MAIN PCB) FROM/TO MICON/CHROMA/TUNER R308 W894 AUDIO_MUTE VOLUME 2.2K 1/4W R319 W852 2.2K BUFFER Q901 2SA1530A1 BUFFER Q902 IIC Decoder St.PLL OUT SW 2SA1530A1 Pilot Input Cancel Switch L-R Filter L-R Demod Matrix De-Emph (L-R)/SAP Pilot Filter Filter Filter 75us...
  • Page 32 AV SCHEMATIC DIAGRAM (TV MT PCB) VIDEO_3_IN AV (FRONT) J710 C702_1 R733 MTJ-032-03A-30FE C701_1 R734 L3_IN AV (FRONT) J711 MTJ-032-03A-32FE R3_IN AV (FRONT) J712 TO SOUND R740 MTJ-032-03A-31FE FRONT_AUDIO_L FRONT_AUDIO_R REAR_AUDIO_R REAR_AUDIO_L C729_2 R724 1/4W S_VIDEO FROM/TO POWER J705 YKF51-5503N C727 TO MICON/CHROMA/TUNER C709_1...

  • Page 33: Micon/Chroma/Tuner

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

  • Page 34: Sound

    WAVEFORMS 31 200mV 1ms/div 22 50V 20µs/div 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 NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram.

  • Page 35: Mechanical Exploded View

    MECHANICAL EXPLODED VIEW 102B 102C PCB110 (CRT PCB ASS'Y) J801 102A 102C FB401 202 208 V801 TU001 PCB010 (MAIN PCB ASS'Y) 101D 101D 101B SP1001 101E 101C 101A...

  • Page 36: Mechanical Replacement Parts List

    MECHANICAL REPLACEMENT PARTS LIST REF. NO. PART NO. DESCRIPTION 7A701A410A FRONT,CABI ASS'Y 101A 701WPJD015 CABINET,FRONT 101B 713WPAA220 GUIDE,REMOCON 101C 723650A002 BADGE,BRAND 101D 735WPBB385 BUTTON,ASS'Y 101E 800WQ0A075 FELT,SHEET 5x100xT=0.3 7A702A080A BACK,CABI ASS'Y 7A702A137A BACK,CABI ASS'Y 102A 702WPAA792 CABINET,BACK 102B 800WQ0A046 FELT,SHEET 9x220xT=0.5 102C 800WQ0A090 FELT,SHEET...

  • Page 37: Electrical Replacement Parts List

    ELECTRICAL REPLACEMENT PARTS LIST REF. NO. PART NO. DESCRIPTION REF. NO. PART NO. DESCRIPTION RESISTORS RESISTORS R001 R002T2683J 68K OHM 1/2W ! R461 R655822R2J R,FUSE 2.2 OHM 1/2W R002 R002T2683J 68K OHM 1/2W ! R500 R0G3K2275K RC 2.7M OHM 1/2W R003 R803R9101J 100 OHM 1/16W...
  • Page 38 ELECTRICAL REPLACEMENT PARTS LIST REF. NO. PART NO. DESCRIPTION REF. NO. PART NO. DESCRIPTION RESISTORS CAPACITORS R902 R002T4471J 470 OHM 1/4W C602 CS0PB0315K CC 0.1 UF 25V B R903 R803R9224J 220K OHM 1/16W C603 CS0PCH4H1J CC PF 50V CH R1010 R002T4103J 10K OHM 1/4W C604...
  • Page 39 ELECTRICAL REPLACEMENT PARTS LIST REF. NO. PART NO. DESCRIPTION REF. NO. PART NO. DESCRIPTION DIODES TRANSISTORS D405 D97U09R11B DIODE,ZENER MTZJ9.1B T-77 Q902 T6RA015300 TRANSISTOR SILICON 2SA1530A-T1 ! D406 D2MXN40020 DIODE,FAST RECOVERY 1N4002-PAN Q1003 TNAAJ05003 COMPOUND TRANSISTOR KRC111SRTK ! D407 D2MXN49370 DIODE,FAST RECOVERY 1N4937-PAN COILS &TRANSFORMERS ! D410 D2MXN49370 DIODE,FAST RECOVERY 1N4937-PAN...
  • Page 40 HOW TO ORDER PARTS When placing a parts order, please have the following information. MODEL NUMBER and VERSION NUMBER Located on the back of the unit. EX: VR0100 (Model no.), VERSION/A (Version no.) PART NO. and DESCRIPTION Located in your SERVICE MANUAL. (See pages M1-1~M2-3) EX: I235953420, STK5342, Voltage Regulator PART NO.

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