Toshiba 27A45 Service Manual
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Toshiba 27A45 Service Manual

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SERVICE MANUAL
COLOR TELEVISION
FILE NO. 050-200505
(MFR'S VERSION A)
27A45
27A45C
DOCUMENT CREATED IN JAPAN, February, 2005

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  • Page 1 FILE NO. 050-200505 (MFR’S VERSION A) SERVICE MANUAL COLOR TELEVISION 27A45 27A45C DOCUMENT CREATED IN JAPAN, February, 2005...

  • Page 2: Servicing Notices On Checking

    When you exchange IC and Transistor with a heat sink, apply silicon grease on the contact section of the heat sink. Befor applying new silicon grease, remove all the old silicon grease. (Old grease may cause damages to the IC and Transistor.) A1-1 27A45/27A45C...

  • Page 3: About Lead Free Solder (Pbf)

    When soldering or unsoldering, completely remove all of the solder from the pins or solder area, and be sure to heat the soldering points with the lead free solder until it melts sufficiently. Recommendations Recommended lead free solder composition is Sn-3.0Ag-0.5Cu. A1-2 27A45/27A45C...

  • Page 4: Table Of Contents

    G-11, G-12 TUNER/STEREO ........................AV ............................G-13, G-14 CRT ............................G-15, G-16 COMB/FILTER ......................... G-17, G-18 H-1, H-2 WAVEFORMS ..........................MECHANICAL EXPLODED VIEWS ................... I-1~I-4 MECHANICAL REPLACEMENT PARTS LIST ................. J1-1, J1-2 ELECTRICAL REPLACEMENT PARTS LIST ................J2-1~J2-8 27A45/27A45C A2-1...

  • Page 5: General Specifications

    W at AC 120 V 60 Hz Per Year kWh/Year Protector Power Fuse Safety Circuit IC Protector(Micro Fuse) Regulation Safety Radiation X-Radiation DHHS Temperature Operation +5oC ~ +40oC Storage -20oC ~ +60oC Operating Humidity Less than 80% RH A3-1 27A45...
  • Page 6 V-chip Rating 16: 9 OSD Language English French Spanish Clock and Sleep Timer Max Time 120 Min Timer Step On/Off Timer Program(On Timer / Off Timer / Clock) Wake Up Timer Timer Back-up (at Power Off Mode) more than A3-2 27A45...
  • Page 7 CH RTN/CH ENT(Quick View) Sleep RE Call(Call) Reset Menu/Enter Mute Exit MTS(Audio Select) Fav.Up Fav.Down 16: 9 Multi Brand Keys CH Up(VCR) CH Down(VCR) Pause/Still TV/VCR(VCR) Play Stop Cable CODE Volume Up(DVD) Volume Down(DVD) DVD CLEAR TOP MENU DVD MENU DISPLAY A3-3 27A45...
  • Page 8 Features Auto Degauss Auto Shut Off Canal+ CATV Anti-theft Rental Memory(Last CH) Memory(Last Volume) V-Chip Type USA,Toshiba Type Auto Search CH Allocation Just Clock Function CH Label VM Circuit Full OSD Premiere Comb Filter 3 Lines Auto CH Memory Hotel Lock...
  • Page 9 Natural Dropping At 1 Corner / 2 Edges / 4 Drop Test Surfaces Height (cm) 60 (ORION SPEC:31) Container Stuffing Sets/40' container G-17 Cabinet Material Cabinet Cabinet Front PS 94V0 DECABROM Cabinet Rear PS 94V0 DECABROM Non-Halogen Demand Eyelet Demand G-18 Environment Pb-free Soldering Parts Specificat A3-5 27A45...
  • Page 10 GENERAL SPECIFICATIONS CRT Size / Visual Size 27 inch / 676mmV 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 11 GENERAL SPECIFICATIONS On Screen Menu Display Menu Type Icon Picture Contrast Brightness Color Tint Sharpness Audio Bass Treble Balance BBE On/Off Stable Sound On/Off Surround On/Off Set Up TV/CABLE(CATV) CH Program Add/Erase Option Language V-chip CH Label Favorite CH Lock On/Off Timer Color Stream DVD/DTV Control Level...
  • Page 12 GENERAL SPECIFICATIONS G-10 Remote Unit RC-GW Control Glow in Dark Remocon Format Toshiba Remocon Format Toshiba Custom Code TV:40-BF h Power Source Voltage(D.C) UM size x pcs UM-4 x 2 pcs Total Keys Keys Keys Power CH Up CH Down...
  • Page 13 GENERAL SPECIFICATIONS G-11 Features Auto Degauss Auto Shut Off Canal+ CATV Anti-theft Rental Memory(Last CH) Memory(Last Volume) V-Chip Type - Type Auto Search CH Allocation Just Clock Function CH Label VM Circuit Full OSD Premiere Comb Filter 3 Lines Auto CH Memory Hotel Lock Closed Caption Stable Sound...
  • Page 14 GENERAL SPECIFICATIONS G-13 Interface Switch Front Power System Select Main Power SW Sub Power Channel Up Channel Down Volume Up Volume Down Rear AC/DC TV/CATV Selector Degauss Main Power SW Indicator Power Yes(RED) Stand-by On Timer Terminals Front Video Input Audio Input RCA x 2 Other Terminal...

  • Page 15: Disassembly Instructions

    Flip up the sides of the Rubber Cap in the direction of the arrow and remove one side of the support. (Refer to Fig. 1-2.) Rubber Cap Support Fig. 1-5 Support Confirm that the Support is securely connected. Fig. 1-2 Put on the Rubber Cap without moving any parts. B1-1 27A45/27A45C...

  • Page 16: Removal And Installation Of Flat Package Ic

    NOTE Do not move the Braided Shield Wire in the vertical direction towards the IC pattern. Blower type IC desoldering machine Braided Shield Wire Soldering Iron IC pattern Fig. 2-4 Fig. 2-2 B2-1 27A45/27A45C...
  • Page 17 Fig. 2-6 Absorb the solder left on the lead using the Braided Shield Wire. (Refer to Fig. 2-7.) NOTE Do not absorb the solder to excess. Soldering Iron Braided Shield Wire Fig. 2-7 B2-2 27A45/27A45C...

  • Page 18: Service Mode List

    Press both VOL. DOWN button on the set and Channel button (1) on the remote control for more than 2 seconds. After the finishing of the initializing of shipping, the unit will turn off automatically. The unit will now have the correct DATA for the new MEMORY IC. 27A45/27A45C...

  • Page 19: Electrical Adjustments

    VS CORRECTION Cb PEDESTAL ADJ R DRIVE Cr PEDESTAL ADJ B DRIVE PARABOLA R CUT OFF CORNER G CUT OFF TRAPWZIUM B CUT OFF LEVEL BRIGHT MAX SEPARATION1 BRIGHT CENT SEPARATION2 BRIGHT MIN READ DATA CONTRAST MAX Fig. 1-2 27A45/27A45C...
  • Page 20 Activate the adjustment mode display of Fig. 1-1 and press the channel button (08) on the remote control to select “V. LIN”. Press the VOL. UP/DOWN button on the remote control until the SHIFT quantity of the OVER SCAN on upside and downside becomes minimum. 27A45/27A45C...
  • Page 21 CS mode. Activate the adjustment mode display of Fig. 1-1 and press the channel button (16) on the remote control to select "BRI CENT". Press the VOL. UP/DOWN button on the remote control until the brightness step No. becomes "65". 27A45/27A45C...
  • Page 22 Activate the adjustment mode display of Fig. 1-1 and press the channel button (03) on the remote control to select “H.PHASE”. Press the VOL. UP/DOWN button on the remote control until the SHIFT quantity of the OVER SCAN on right and left becomes minimum. 27A45/27A45C...
  • Page 23 Confirm red and blue color. Adjust the slant of the deflection yoke while watching the screen, then tighten the fixing screw. WEDGE POSITION DEFLECTION YOKE Fig. 3-2-b DEFLECTION YOKE SCREW MAGNET SCREW PURITY MAGNETS 6 POLE MAGNETS 4 POLE MAGNETS Fig. 3-1 27A45/27A45C...
  • Page 24 4. ELECTRCAL ADJUSTMENT PARTS LOCATION GUIDE (WIRING CONNECTION) CRT PCB CP806 TP024 R805 TP022 R803 J801 CP802B CP803 CP801B CD801 CD802 CP801A CP101 FB401 CP401 VR401 TP003 W003 TU001 VR502 AC IN SPEAKER CP802A L503 CP502 CP501 CP1001 MAIN PCB 27A45/27A45C...

  • Page 25: Block Diagrams

    IC702 MM1501XNRE CH UP Vin1 Vin2 V.OUT MEMORY IC IC199 BR24L16FJ-WE2 FRONT-AUDIO.R FRONT-AUDIO.L J707 J706 AUDIO SW(R) IC IC701 MM1501XNRE V.OUT Vin1 SPEAKER SP1001 Vin2 TONE CONTROL IC SOUND AMP IC IC302 IC1001 Q901 AN5891SA-E1V AN17808B BUFFER Q902 BUFFER 27A45/27A45C...

  • Page 26: Printed Circuit Boards Main/Crt

    W055 R515 R803 W125 L501 C316 W180 C314 R805 R133 L301 R804 W015 X101_1 CP501 W176 C505_1 W121 W049 W119 C802 R146 FH502 C156_1 W118 F501 FH501 CP1001 C916 SW105 SW103 SW104 SW101 SW102 S809Y J707 J706 J705 D706 27A45/27A45C...
  • Page 27 R627 R641 R1503 Q603 R519 R1507 R511 Q1503 Q605 Q614 Q1508 R1529 R1508 R609 R607 R462 R1523 Q1504 R610 IC1503 IC1502 R448 Q411 R417 R513 R516 Q1001 R458 C416 R407 R1013 R705 Q709 IC702 Q712 R736 IC701 Q711 R404 27A45/27A45C...

  • Page 28: Micon

    NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME NOTE:THE DC VOLTAGE AT EACH PART WAS MEASURED OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL. 27A45/27A45C...

  • Page 29: Chroma

    DANGEREUSES AN POINT DE VUE SECURITE CRITICAL FOR SAFETY,USE ONES WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST N’UTILISER QUE CELLS DECRITES DESCRIBED IN PARTS LIST ONLY WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL. DANS LA NOMENCLATURE DES PIECES 27A45/27A45C...

  • Page 30: Deflection

    THE ALUMI ELECTROLYTIC CAPACITOR MARKED NP DANGEREUSES AN POINT DE VUE SECURITE CRITICAL FOR SAFETY,USE ONES WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL. N’UTILISER QUE CELLS DECRITES IS NON POLAR ONE. DESCRIBED IN PARTS LIST ONLY DANS LA NOMENCLATURE DES PIECES 27A45/27A45C...

  • Page 31: Power

    NOTE:THE DC VOLTAGE AT EACH PART WAS MEASURED :POUR UNE PROTECTION CONTINUE LES RISQUES D’INCEIE WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST N’UTILISER QUE DES FUSIBLE DE MEME TYPE 6.3A 125V(F501) WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL. 27A45/27A45C...

  • Page 32: Sound

    WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST DANGEREUSES AN POINT DE VUE SECURITE CRITICAL FOR SAFETY,USE ONES WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL. N’UTILISER QUE CELLS DECRITES DESCRIBED IN PARTS LIST ONLY DANS LA NOMENCLATURE DES PIECES 27A45/27A45C G-10...

  • Page 33: Tuner/Stereo

    WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST CRITICAL FOR SAFETY,USE ONES DANGEREUSES AN POINT DE VUE SECURITE WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL. DESCRIBED IN PARTS LIST ONLY N’UTILISER QUE CELLS DECRITES DANS LA NOMENCLATURE DES PIECES 27A45/27A45C G-11 G-12...
  • Page 34 NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME NOTE:THE DC VOLTAGE AT EACH PART WAS MEASURED OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL. 27A45/27A45C G-13 G-14...

  • Page 35: Crt

    WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST CRITICAL FOR SAFETY,USE ONES DANGEREUSES AN POINT DE VUE SECURITE WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL. DESCRIBED IN PARTS LIST ONLY N’UTILISER QUE CELLS DECRITES DANS LA NOMENCLATURE DES PIECES 27A45/27A45C G-16...

  • Page 36: Comb/Filter

    NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME NOTE:THE DC VOLTAGE AT EACH PART WAS MEASURED OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL. 27A45/27A45C G-17 G-18...

  • Page 37: Waveforms

    15 2V 20µs/div DEFLECTION 4 1V 0.1ms/div 11 0.5V 20µs/div 16 2V 5ms/div CHROMA 12 1V 2µs/div 7 1V 20µs/div 17 20V 5ms/div NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram. 27A45/27A45C...
  • Page 38 27 5V 2ms/div 23 2V 5ms/div 28 200mV 20µs/div 21 200V 50µs/div 37 50V 20µs/div 24 2V 5ms/div 29 200mV 20µs/div NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram. 27A45/27A45C...

  • Page 39: Mechanical Exploded Views

    MECHANICAL EXPLODED VIEW 102C 102B 102B 102A PCB110 (CRT PCB ASS'Y) 101G PCB010 (MAIN PCB ASS'Y) 101G 101G 101F 101D 101B 101E 101C 101A 27A45...
  • Page 40 MECHANICAL EXPLODED VIEW 102C 102B 102B 102A PCB110 (CRT PCB ASS'Y) 101G PCB010 (MAIN PCB ASS'Y) 101G 101G 101F 101D 101B 101E 101C 101A 27A45C...
  • Page 41 MECHANICAL EXPLODED VIEW (PACKING DIAGRAM) 121,122, 123, TM101 27A45/27A45C...

  • Page 42: Mechanical Replacement Parts List

    8117540B0U SCREW,TAP TITE(B0) TRUSS 4x20 AE006150 8141J50D5U SCREW,TAP TITE(P) GW20 5x45 AE003528 8110630A0U SCREW,TAP TITE(P) BRAZIER 3x10 AE003524 8109I30A0U SCREW,TAP TITE(B) WH7 3x10 AE005917 810963080Q SCREW,TAP TITE(B) BRAZIER AE003531 810763080U SCREW,TAP TITE(S) BRAZIER AE005659 8109I3080U SCREW,TAP TITE(B) WH7 J1-1 27A45...
  • Page 43 MECHANICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description AE006022 7A701A361A FRONT CABI ASS'Y 101A AE006136 701WPJC970 CABINET,FRONT 101B AD301618 711WPAA088 PLATE,FRONT 101C AE006137 712WPBA126 DOOR 101D AD301620 713WPAA090 GLASS,LED 101E AE006138 723549A042 AV LABEL 101F AE006139 735WPBB362 BUTTON ASS'Y 101G AE003071...

  • Page 44: Electrical Replacement Parts List

    BZ110053 E02LF3102M 1000 UF 25V DIODES D001 BZ410037 D97U03301B DIODE,ZENER MTZJ33B T-77 D104 BZ410006 D1VT001330 DIODE,SILICON 1SS133T-77 D105 BZ410006 D1VT001330 DIODE,SILICON 1SS133T-77 D106 BZ410020 D97U05R11B DIODE,ZENER MTZJ5.1B T-77 D109 BZ410054 0021721150 SLR-342VCT32 D113 BZ410021 D97U05R61B DIODE,ZENER MTZJ5.6B T-77 J2-1 27A45...
  • Page 45 0002E00610 PHOTO COUPLER LTV-817M-VB IC601 AE002803 I06FC1283A M61283FP R70T IC701 AD301988 I0UF015010 MM1501XNRE IC702 AD301988 I0UF015010 MM1501XNRE IC902 BZ611068 I01FF58290 AN5829S ! IC1001 AE003081 I0FSP7808B AN17808B IC1501 AE003002 I03FE76605 LA76605M-TLM IC1502 AD301988 I0UF015010 MM1501XNRE IC1503 AD301988 I0UF015010 MM1501XNRE J2-2 27A45...
  • Page 46 MSP-213V2-432_NI_LF J704 AE002761 060J411032 RCA JACK MSP-213V1-652_NI_LF J705 AE004756 060J401104 RCA JACK MTJ-032-03A-30FE J706 AE004758 060J401106 RCA JACK MTJ-032-03A-32FE J707 AE004757 060J401105 RCA JACK MTJ-032-03A-31FE J708 AE002759 060J431020 RCA JACK MSP-213V2-432_NI_LF ! J801 AD301356 066F130020 SOCKET,CATHODE RAY,TUBE ISHS53S J2-3 27A45...
  • Page 47 X602 BZ613004 100CT3R505 CRYSTAL HC-49/U RESISTOR RC....CARBON RESISTOR CAPACITORS CC....CERAMIC CAPACITOR CE....ALUMI ELECTROLYTIC CAPACITOR CP....POLYESTER CAPACITOR CPP....POLYPROPYLENE CAPACITOR CPL....PLASTIC CAPACITOR CMP....METAL POLYESTER CAPACITOR CMPL....METAL PLASTIC CAPACITOR CMPP....METAL POLYPROPYLENE CAPACITOR J2-4 27A45...
  • Page 48 ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description RESISTORS ! R409 AE001783 R803R9102J OHM 1/16W ! R410 AD302107 R3X18A470J R,METAL OXIDE OHM 2W ! R419 AD300784 R3X1811R2J R,METAL OXIDE 1.2 OHM 1W ! R426 BZ210030 R4X5T4472F R,METAL 4.7K OHM 1/4W ! R429 AE000145...
  • Page 49 ELECTRICAL REPLACEMENT PARTS LIST D402 BZ410043 D2WT011E10 DIODE,SILICON 11E1-EIC Location No. TSB P/N Reference No. Description DIODES D403 BZ410019 D97U03001B DIODE,ZENER MTZJ30B T-77 D404 BZ410020 D97U05R11B DIODE,ZENER MTZJ5.1B T-77 ! D405 BZ410063 D2WTAU02A0 DIODE,SILICON AU02A-EIC ! D406 BZ410021 D97U05R61B DIODE,ZENER MTZJ5.6B T-77 D407 BZ410063...
  • Page 50 ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description TRANSISTORS Q101 BZ510109 TCAA3875SY TRANSISTOR,SILICON KTC3875S_Y_RTK Q103 BZ510109 TCAA3875SY TRANSISTOR,SILICON KTC3875S_Y_RTK ! Q402 BZ510097 TCAT03227Y TRANSISTOR,SILICON KTC3227_Y-AT ! Q405 BZ510040 TDUU024990 TRANSISTOR,SILICON 2SD2499(LB0EC1) Q408 BZ510073 TAATA12660 TRANSISTOR,SILICON KTA1266-AT(Y,GR) Q409 BZ510073 TAATA12660 TRANSISTOR,SILICON...
  • Page 51 ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description SWITCHES SW101 BZ612010 0504101T34 SWITCH,TACT EVQ21505R SW102 BZ612010 0504101T34 SWITCH,TACT EVQ21505R SW103 BZ612010 0504101T34 SWITCH,TACT EVQ21505R SW104 BZ612010 0504101T34 SWITCH,TACT EVQ21505R SW105 BZ612010 0504101T34 SWITCH,TACT EVQ21505R VARIABLE RESISTORS VR401 BZ210218 V1K63H3BTE VOLUME,SEMI FIXED...
  • Page 52 TOSHIBA CORPORATION 1-1, SHIBAURA 1-CHOME, MINATO-KU, TOKYO 105-8001, JAPAN...

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