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Toshiba 26HF85 Service Manual

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FILE NO. 050-200509
(MFR'S VERSION A)

SERVICE MANUAL

COLOR TELEVISION
26HF85
DOCUMENT CREATED IN JAPAN, March, 2005

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  Summary of Contents for Toshiba 26HF85

  • Page 1: Service Manual

    FILE NO. 050-200509 (MFR’S VERSION A) SERVICE MANUAL COLOR TELEVISION 26HF85 DOCUMENT CREATED IN JAPAN, March, 2005...
  • 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: About Lead Free Solder (Pbf)

    ABOUT LEAD FREE SOLDER (PbF) Distinction of PbF PCB: PCBs (manufactured) using lead free solder will have a PbF printing on the PCB. (Please refer to figures.) Caution: • Pb free solder has a higher melting point than standard solder; Typically the melting point is 50°F~70°F(30°C~40°C) higher.
  • Page 4: Table Of Contents

    TABLE OF CONTENTS SERVICING NOTICES ON CHECKING ..................A1-1 HOW TO ORDER PARTS ......................A1-1 IMPORTANT ..........................A1-1 ABOUT LEAD FREE SOLDER (PbF) ..................A1-2 TABLE OF CONTENTS ......................A2-1 GENERAL SPECIFICATIONS ....................A3-1~A3-5 DISASSEMBLY INSTRUCTIONS 1. REMOVAL OF ANODE CAP ....................B1-1 2.
  • Page 5: General Specifications

    GENERAL SPECIFICATIONS CRT Size / Visual Size 26 inch / 656.7mmV System CRT Type Flat (16:9) Magnetic Field BV/BH +0.45G/0.18G Color System NTSC Display Capability 1080i/540p Speaker 2 Speaker Position Front Bottom Size 1.8 x 3.9 Inch Impedance Sound Output 5.0W+5.0W 10%(Typical) NTSC3.58+4.43 /PAL60Hz...
  • Page 6 GENERAL SPECIFICATIONS On Screen Menu Display Menu Type Icon Picture Mode(Picture preference) Brightness Contrast Color Tint Sharpness Color Temperature Display Format Cable Clear Reset Audio Bass Treble Balance Stable Sound Speakers On/Off Dolby Virtual WOW SRS 3D WOW Focus WOW Tru Bass HDMI1 HDMI2 Reset...
  • Page 7 Timer Back-up (at Power Off Mode) more than G-10 Remote Unit RC-KK Control Glow in Dark Remocon Back Light Remocon Remocon Format Toshiba Format Toshiba Custom Code TV:40-BFh Power Source Voltage(D.C) UM size x pcs UM-4 x 2 pcs Total Keys...
  • Page 8 GENERAL SPECIFICATIONS G-11 Features Auto Shut Off CABLE Power On Memory Memory(Last CH) Memory(Last Volume) V-Chip Type USA, ORION Type SRS WOW(SRS 3D/Focus/Tru Bass) Virtual Dolby Yes(Digital) Timer(On Timer /Off Timer/Sleep Timer) Aspect Cinema Mode Image Tilt Direct Input Selection Auto Search CH Lock CH Program...
  • Page 9 GENERAL SPECIFICATIONS G-13 Interface Switch Front Power Channel Up/Menu Up Channel Down/Menu Down Volume Up/Menu > Volume Down/Menu < Indicator Power Yes(RED) Stand-by On Timer Terminals Front Video Input = VIDEO3 Audio Input = VIDEO3 RCA x 2 S Input = VIDEO3 Other Terminal Rear Video Input(Rear1) = VIDEO1...
  • Page 10: 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 11: Removal And Installation Of Flat Package Ic

    DISASSEMBLY INSTRUCTIONS When IC starts moving back and forth easily after REMOVAL AND INSTALLATION OF desoldering completely, pickup the corner of the IC using a FLAT PACKAGE IC 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 12 DISASSEMBLY INSTRUCTIONS INSTALLATION When bridge-soldering between terminals and/or the soldering amount are not enough, resolder using a Thin-tip Take care of the polarity of new IC and then install the new Soldering Iron. (Refer to Fig. 2-8.) IC fitting on the printed circuit pattern. Then solder each lead on the diagonal positions of IC temporarily.
  • Page 13: Service Mode List

    SERVICE MODE LIST This unit 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 Releasing of V-CHIP PASSWORD.
  • Page 14 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. ADDRESS DATA INIT CRT ON 0010 OEC7118A_32...
  • Page 15: When Replacing Eeprom (Memory) Ic

    WHEN REPLACING EEPROM (MEMORY) IC Enter DATA SET mode by setting VOLUME to minimum. Press both VOL. DOWN button on the set and Channel button (6) on the remote control for more than 2 seconds. ADDRESS and DATA should appear as FIG 1. ADDRESS is now selected and should "blink".
  • Page 16: Electrical Adjustments

    ELECTRICAL ADJUSTMENTS 1. ADJUSTMENT PROCEDURE FUNCTION FUNCTION FUNCTION OSD H CORNER R-Y PHASE Read and perform these adjustments when repairing the CUT OFF C.PARA G-Y GAIN circuits or replacing electrical parts or PCB assemblies. H.POSI C.SAW G-Y PHASE V.POSI V.SYMM BRI.CENT CAUTION H.
  • Page 17 ELECTRICAL ADJUSTMENTS 2-3: FOCUS 2-6: VERTICAL CENT/ VERTICAL SIZE Receive the monoscope pattern. Receive the monoscope pattern. Press the MENU button. And, then press the LEFT/ Turn the Focus Volume fully counterclockwise once. Adjust the Focus Volume until picture is distinct. RIGHT button on the remote control until the PICTURE menu appears.
  • Page 18 ELECTRICAL ADJUSTMENTS 2-8: BRIGHT CENT 2-11: TRAPEZIUM Receive the monoscope pattern. (RF Input) Receive the crosshatch signal from the Pattern Generator. Set the screen mode to FULL. Press the MENU button. And, then press the LEFT/ Using the remote control, set the brightness and contrast RIGHT button on the remote control until the PICTURE to normal position.
  • Page 19: Hd-Mi

    ELECTRICAL ADJUSTMENTS 2-14: SEMSOR PARA Receive the crosshatch signal from the Pattern Generator. Press the MENU button. And, then press the LEFT/ RIGHT button on the remote control until the PICTURE menu appears. 100% Press the LEFT/RIGHT button on the remote control to 120% highlight DISPLAY FORMAT.
  • Page 20: Purity And Convergence

    ELECTRICAL ADJUSTMENTS 3. 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.
  • Page 21 ELECTRICAL ADJUSTMENTS 4. ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE (WIRING CONNECTION) CP804 VM COIL PCB CP853 J801 S853 S854 CP852 CP808B CD852 CRT PCB CP802B CP851B CD803 CD808 CD802 MAIN PCB AV PCB PCB CP510 FB401 J705 CP1002 SPEAKER CP851A CP509 CP501 CP503 DEGAUSS...
  • Page 22: Mechanical Exploded View

    MECHANICAL EXPLODED VIEW PCB110 (CRT PCB ASS'Y) PCBD80 (VM COIL PCB ASS'Y) 101M 101I 101J 101H 101D 101L 101K 101B PCB260 101K (FRONT JACK PCB ASS'Y) 101K 101A 101H 101G 101K 101E 101F 101C...
  • Page 23 MECHANICAL EXPLODED VIEW 102B 102D 102C 102A 102C PCBDS0 PCB070 (SCALER PCB ASS'Y) (MAIN PCB ASS'Y) PCBDJ0 (HD-MI PCB ASS'Y) PCBD20 (AV PCB ASS'Y)
  • Page 24 MECHANICAL EXPLODED VIEW (PACKING DIAGRAM) 127, 128, 129, TM101...
  • Page 25: Mechanical Replacement Parts List

    MECHANICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description AE006010 7A7010081A FRONT CABI ASS'Y 101A AE004959 701WPJ1278 CABINET,FRONT 101B AE004821 711WPA0210 PLATE,FRONT 101C AE006368 712WPJ0902 DOOR 101D AE004823 713WPA0334 GUIDE,REMOCON 101E AE004824 7230007791 SHEET,BUTTON 101F AE004825 7230007792 AV LABEL 101G AD302008 7235490036...
  • Page 26: Electrical Replacement Parts List

    ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description RESISTORS ! R401 AE002516 R4X5T6222F R,METAL 2.2K OHM 1/6W ! R403 BZ210105 R4X5T6183F R,METAL 18K OHM 1/6W ! R405 BZ210231 R4X5T6153F R,METAL 15K OHM 1/6W ! R406 AD300039 R3X18A680J R,METAL OXIDE OHM 2W ! R408...
  • Page 27 ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description CAPACITORS C549 BZ110203 C0PLRR7W2K 820 PF 2KV RR C572 AE005174 E61FF1222D 2200 UF 10V C808 AE003828 C13DB0713K 0.001 UF 2KV B C809 AD301347 E0ELFD330M UF 250V C870 AE000272 E50HU2470M UF 16V C1003 BZ110124...
  • Page 28 ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description DIODES ! D536 AD301980 D2CF2016L0 DIODE,SILICON FE201-6L49 D537 BZ410091 D230PF6DT0 DIODE,SILICON FEPF6DT ! D539 BZ410111 D28F30DF60 DIODE,RECTIFIER 30DF6-FC D540 AD300731 D2WXN49370 DIODE,SILICON 1N4937 ! D541 AD301980 D2CF2016L0 DIODE,SILICON FE201-6L49 D543 BZ410006 D1VT001330...
  • Page 29 ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description ! IC402 AD302356 I03S065100 LA6510 ! IC501 AE002809 000220002W PHOTO COUPLER PS2561AL1-1-V(W) ! IC502 AE005178 I0BD0159M0 STR-A6159M ! IC503 AE002809 000220002W PHOTO COUPLER PS2561AL1-1-V(W) ! IC504 AD302211 I1KJ9A431A KIA431A-AT ! IC505 AD301929 I1KA78R090...
  • Page 30 ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description TRANSISTORS Q702 AE005872 T6RA015300 TRANSISTOR,SILICON 2SA1530A-T1 Q703 AE005872 T6RA015300 TRANSISTOR,SILICON 2SA1530A-T1 Q704 AE005873 T8RA030520 TRANSISTOR,SILICON 2SC3052-T1 Q705 AE005873 T8RA030520 TRANSISTOR,SILICON 2SC3052-T1 Q706 AE005872 T6RA015300 TRANSISTOR,SILICON 2SA1530A-T1 Q708 AE005873 T8RA030520 TRANSISTOR,SILICON 2SC3052-T1 Q709...
  • Page 31 ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description COILS &TRANSFORMERS L701 BZ310040 02167F470J COIL L702 BZ310040 02167F470J COIL L703 BZ310040 02167F470J COIL L705 BZ310041 02167F101J COIL 100 UH L706 BZ310040 02167F470J COIL L707 BZ310040 02167F470J COIL L708 BZ310040 02167F470J COIL...
  • Page 32 ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description P.C.BOARD ASSEMBLIES PCB070 AE006906 A3S3010070 PCB ASS'Y CME018A PCB110 AE006907 A3S3010110 PCB ASS'Y CCD002A PCB260 AE006908 A3S3010260 PCB ASS'Y CEE040A PCBD20 AE006909 A3S3010D20 PCB ASS'Y CED019A PCBD80 AE006910 A3S3010D80 PCB ASS'Y CED012A PCBDJ0...
  • Page 33 ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description MISCELLANEOUS CP3901A AE006384 069R2Y0720 CONNECTOR PCB SIDE 79107-7016 CP3901B AE005595 069R2Y0700 CONNECTOR PCB SIDE 87760-3416 EL0701 BZ614043 124116281A EYE LET XRY16X28BD EL0702 BZ614044 124120301A EYE LET XRY20X30BD EL1101 BZ614043 124116281A EYE LET XRY16X28BD...
  • Page 34 TOSHIBA CORPORATION 1-1, SHIBAURA 1-CHOME, MINATO-KU, TOKYO 105-8001, JAPAN...