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Toshiba 27HL85 Service Manual

Toshiba 27hl85 lcd color television -service manual
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See also: Owner's Manual
FILE NO. 020-200504
REVISED.1

SERVICE MANUAL

LCD Color Television

27HL85
- 1 -
Published in Japan, Jun. 2005 (YC)
TOSHIBA CORPORATION 2005

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Summary of Contents for Toshiba 27HL85

  • Page 1: Service Manual

    FILE NO. 020-200504 REVISED.1 SERVICE MANUAL LCD Color Television 27HL85 - 1 - Published in Japan, Jun. 2005 (YC) TOSHIBA CORPORATION 2005...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS SERVICE SAFETY PRECAUTIONS ............................ 3 HANDLING THE LCD MODULE ............................5 SERVICE MODE .................................. 7 LAYOUT OF MAJOR BOARDS ............................12 MECHANICAL DISASSEMBLY ............................13 EXPLODED VIEW ................................15 PACKING DISASSEMBLY ..............................17 CHASSIS AND CABINET REPLACEMENT PARTS LIST ....................18 PC BOARDS TOP &...

  • Page 3: Service Safety Precautions

    SERVICE SAFETY PRECAUTIONS • The caution items shown here describe major safety issues and should always be observed. • The meanings of the various indications are as follows. Indicates a hypothetical situation in which service personnel and nearby third parties, or even WARNING end users due to a product defect after the service operation is completed, could possibly be in danger of injury or even death in the event of operational error.
  • Page 4 WARNING • Always advise users to keep children away. There is danger of injury to children from tools, disassembled products, etc. KEEP CHILDREN AWAY • Always disconnect the power plug before starting work whenever power is not required. Failure to disconnect the power plug before starting work can result in electrical shock. UNPULUG •...

  • Page 5: Handling The Lcd Module

    HANDLING THE LCD MODULE Safety Precautions 3. If the panel surface becomes soiled, wipe with cotton or a In the event that the screen is damaged or the liquid crystal soft cloth. If this does not remove the soiling, breathe on (fluid) leaks, do not breathe in or drink this fluid.
  • Page 6 7. Do not expose the LCD module to direct sunlight or strong ultraviolet rays for an extended period of time. 8. Do not store the LCD module below the temperature con- ditions described in the specifications. Failure to do so could result in freezing of the liquid crystal due to cold air or loss of resilience or other damage.

  • Page 7: Service Mode

    SERVICE MODE 1. ENTERING SERVICE MODE 1) Press MUTE button twice on 2) Press MUTE button again and 3) While pressing the MUTE button, Remote Control. keep pressing. press MENU button on TV set. MUTE (Service mode display) 2. DISPLAYING THE ADJUSTMENT MENU 1) Press MENU button on Remote Control.
  • Page 8 4. SELECTING THE ADJUSTING ITEMS 1) Every pressing of CHANNEL button in the service mode changes the adjustment items in the order of table-2. button for reverse order) 5. ADJUSTING THE DATA 1) Pressing of VOLUME button will change the value of data in the range from 00H to FFH. The variable range depends on the adjusting item.
  • Page 9 SELF DIAGNOSTIC FUNCTION 1) Press “9” button on Remote Control during display of adjustment menu in the service mode. The diagnosis will begin to check if interface among IC’s is executed properly. 2) During diagnosis, the following displays are shown. HL85_0100 000000 Firmware :...
  • Page 10 VERSION CHECK MODE 1) Press “9” button twice on Remote Control during display of adjustment menu in the service mode. The version of main MPU will begin to check. 2) During Version Check, the following displays are shown. HL85_0100 (U15) 20 00 01 34 00 00 00000155 CMO-27...
  • Page 11 10. STATUS CHECK MODE 1) Press “9” button thrice on Remote Control during display of adjustment menu in the service mode. The status of this model will begin to check. 2) During Status Check, the following displays are shown. EXT1 480i C6 38 54 CE 08 NATURAL...

  • Page 12: Layout Of Major Boards

    LAYOUT OF MAJOR BOARDS U101A AV TERMINAL BOARD U103A SIGNAL BOARD U811 POWER BOARD U101C KEY BOARD U101B LED BOARD U812 AC-IN BOARD - 12 -...

  • Page 13: Mechanical Disassembly

    MECHANICAL DISASSEMBLY 1. Remove the stand (foot) and back cover. PP3 × 8 + SW + W SBN × 4 A450 BITTB3 × 16 SBN × 10 A401 A445 PP5 × 16 SW + W SBN × 3 A420 2. Remove the KEY board and piece key ass'y. PP4 ×...
  • Page 14 3. Remove the boards (POWER, AC-IN, SIGNAL, AV OTHER, LED/RMT) and speaker. PP3 × 8 + SW + W ECO PP3 × 8 + SW + W ECO × 5 × 6 PP08 U811 PP3 × 8 + SW + W ECO PP3 ×...

  • Page 15: Exploded View

    EXPLODED VIEWS 1. Chassis Block PP3 × 8 + SW + W SBN × 4 A450 BITTB3 × 16 S B N × 10 A445 A401 PP4 × 8 + SW + W ECO × 6 PP4 × 8 + SW + W SBN PP4 ×...

  • Page 16: Main Block

    2. Main Block PP3 × 8 + SW + W ECO PP3 × 8 + SW + W ECO × 5 × 6 PP3 × 8 + SW + W ECO PP08 × 4 U811 PP3 × 8 + SW + W ECO U101A PP12 ×...

  • Page 17: Packing Disassembly

    PACKING DISASSEMBLY A702A A702A A703 K902 Y170 Y101 A702B Y109 A702B A701A - 17 -...

  • Page 18: Chassis And Cabinet Replacement Parts List

    • The part number must be used when ordering parts, in order to assist in processing, be sure to include the Model number and Description. ∗ • The PC board assembly with mark is no longer available after the end of the production. Model : 27HL85 Capacitors ..... CD Ceramic Disk : Plastic Film : Electrolytic Resistors ....
  • Page 19 Location Location Parts No. Description Parts No. Description CE04 76092281 CERAMIC DISC, AC250V E 4700PF R684 76011104 CHIP, 1/20W 100K OHM J CE05 76092281 CERAMIC DISC, AC250V E 4700PF R685 76011183 CHIP, 1/20W 18K OHM J CE07 76503049 PLASTIC FILM, 63V 0.47UF J R686 76011102 CHIP, 1/20W 1K OHM J CE09...
  • Page 20 Location Location Parts No. Description Parts No. Description COIL & TRANSFORMERS RA77 76011103 CHIP, 1/20W 10K OHM J RA78 76000445 CHIP JUMPER, 1608TYPE L101 23248398 COIL, CHOKE, TLN3278D RA79 76000445 CHIP JUMPER, 1608TYPE L102 23103828 INDUCTOR, BEAD, TEM2121M RB08 76011470 CHIP, 1/20W 47 OHM J L103 23103828 INDUCTOR, BEAD, TEM2121M RB09...
  • Page 21 Location Location Parts No. Description Parts No. Description QE01 23135089 IC, HYBRID 650V STR-W6756 DE55 23357748 DIODE, ZENER, MA8062-M QE26 23000823 IC, PHOTO COUPLER, TLP421F(GR) DE56 23357800 DIODE, ZENER, MA8300-H QE40 23085463 IC, SI-8050E DE72 23357366 DIODE, FR105-B5 QE52 23205567 TRANSISTOR, CHIP R1=R2=22K SMT RN2403(TE85L,F) DE75 23357408 DIODE, FMX-12S(023-108) QE53...
  • Page 22 Location Location Parts No. Description Parts No. Description PJ41 23713943 CONNECTOR, CONNECT B11B-PH-K-S(LF) A410 23717219 SCREW, PP3X8+SW+W SBN PJ41A 23713943 CONNECTOR, CONNECT B11B-PH-K-S(LF) A420 23436868 FOOT, STAND ASSY 27WL55XE PJ42 23713939 CONNECTOR, CONNECT B6B-PH-K-S(LF) A440 23738074 SCREW, PP 5X16 SW+W SBN PJ42A 23713948 CONNECTOR, CONNECT S6B-PH-K-S(LF) A445...

  • Page 23: Pc Boards Top & Bottom View

    AV TERMINAL BOARD PD2165A1 (U101A) BOTTOM (FOIL) SIDE RV39 RV39 RV07 PV16 23547823 GR01 C105 P516 P515 GR01 PJ21A RV22 DV03 DV02 RV40 R6616 DV03 DV01 DV02 RV21 DV01 PV12 R6617 PV15 RV21 C6612 RV27 RV40 PV14 L110 C6605 RV25 RV26 RV25 RV26...
  • Page 24 AV TERMINAL BOARD PD2165A1 (U101A) TOP (COMPONENT) SIDE PV16 P515 C105 P516 PJ21A PV15 C6612 C6600 PV14 C6607 C6606 PV13 C6605 PV12 PV11 C6613 PK05 QV16 C6614 CV68 QV16 Q6605 DE96 C656 L101 C6601 C6602 Q6605 CV74 CV78 C6615 Q6600 23590251A PD2165 C6609...
  • Page 25 LED BOARD PD2165A2 (U101B) LED BOARD PD2165A2 (U101B) BOTTOM (FOIL) SIDE TOP (COMPONENT) SIDE P601 P601 P602B C694 C688 P602B C694 C688 R688 RB24 RB22 R688 RB24 RB22 CB02 PD2165 RB10 23547823 PJ41A RB10 DB04 CB05 DB01 QB04 23590251A QB07 DB01 DB04 PJ41A...
  • Page 26 SIGNAL BOARD PD2131G1 (U103A) BOTTOM (FOIL) SIDE - 29 -...
  • Page 27 SIGNAL BOARD PD2131G1 (U103A) TOP (COMPONENT) SIDE - 30 -...
  • Page 28 POWER BOARD PD2164A1 (U811) BOTTOM (FOIL) SIDE RE15 QE83 PJ62A CE09 QE26 P813B CE82 PJ80A DE71 P812B QE93 CE43 CE22 DE08 125V CE12 FE72 DE11 125V CE07 FE75 QE01A QE01 CE75 CE10 QE93A FE73 TE62 RE14 FE74 DE73 DE75 DE77 LE11 CE73 CE40...
  • Page 29 AC-IN BOARD PD2164A2 (U812) BOTTOM (FOIL) SIDE 23547822 R899 R828 R827 P805B DS-7209 L802 P800 L801 R801 AREA LIVE C801 CAUTION C802 D899 D801 L807 C811 L806 CE14 D801A CE13 DE01 LE06 LE07 C812 T801 P812A RE04 SR81 P813A T802 D852 AC-IN BOARD PD2164A2 (U812) TOP (COMPONENT) SIDE...

  • Page 30: Schematic Diagram

    SCHEMATIC DIAGRAM MODEL : 27HL85 WARNING : BEFORE SERVICING THIS CHASSIS, READ THE "SERVICE SAFETY PRECAUTIONS" ON PAGE 3 OF THIS MANUAL. CAUTION : The international hazard symbols " " in the schematic diagram and the parts list designate components which have special characteristics important for safety and should be replaced only with types identical to those in the original circuit or specified in the parts list.
  • Page 31 SCHEMATIC DIAGRAM STRUCTURE: CONNECTOR ..............................1/47 AV_JACK ................................2/47 AUDIO_OUT ............................... 3/47 REGULATOR ..............................4/47 LED_RMT ................................5/47 KEY ..................................6/47 TIF ..................................7/47 CONNECTOR(POWER_BOARD) ........................8/47 MAIN_POWER(POWER_BOARD) ........................9/47 SUB_POWER(POWER_BOARD) ........................10/47 AC-INPUT ................................. 11/47 SIGNAL ANALOG IN [SHEET-200] ..12/47 D IN A [SHEET-300] ..
  • Page 32 - 37 -...

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