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Toshiba 23HL85 Service Manual

Lcd color television
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FILE NO. 050-200531

SERVICE MANUAL

LCD Color Television
23HL85
- 1 -
Published in Japan, Sep. 2005 (YC)
TOSHIBA CORPORATION 2005

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Summary of Contents for Toshiba 23HL85

  • Page 1: Service Manual

    FILE NO. 050-200531 SERVICE MANUAL LCD Color Television 23HL85 - 1 - Published in Japan, Sep. 2005 (YC) TOSHIBA CORPORATION 2005...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS SERVICE SAFETY PRECAUTIONS ............................3 HANDLING THE LCD MODULE ..............................5 1. SERVICE MODE ..................................7 1-1. STARTING SERVICE MODE ............................7 2. ADJUSTMENT ..................................8 2-1. ADJUSTMENT TOOLS AND CONDITIONS ........................8 2-2. AUTO GAIN/OFFSET ADJUSTMENT ..........................8 2-3.

  • 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

    1.Service Mode 1-1.Starting Service Mode *Set LCD TV to the normal TV signal receive mode. Note: In this "Service Mode" section, [ ] shows a button. 1-1-1. Press [MUTE] on the remote control once. 1-1-2. Press [MUTE] again, and press [ ] on LCD TV.

  • Page 8: Adjustment

    2. Adjustment Note: In this "Adjustment" section, [ ] shows a button. 2-1.Adjustment Tools and Conditions Tools: Pattern Generator (801GF, MSPG925F) DDC Adjustment Tool Remote Control Conditions: Heat Run 30 minutes or more 2-2. Auto Gain/Offset Adjustment 2-2-1. RF Mode Adjustment (normal TV receive mode) No reguired 2-2-2.

  • Page 9: Ddc Edid Data Read & Write

    2-3. DDC EDID Data Read & Write The following software programs are used to read/write DDC EDID data. DLPortIO.exe t23.edi UserPort.exe UserPort.sys (Windows/system32/Drivers) WinEDID_2.0.exe Be very careful that DDC EDID data read/write varies depending on Operating System conditions of (See the fl owchart below.) Start OS: MS Windows 2000, XP OS: MS Windows 98...
  • Page 10 2-3-1. Port Setup (Windows 2000, XP only) Copy "UserPort.sys" fi le to c:\windows\system32\drivers. - 10 -...
  • Page 11 Double-click "DLPortIO.exe" to install port setting program. Double-click "DLPortIO.exe" When the port setting program starts up, the installation program runs automatically. Continue the installation by following instructions on the window. Click "Next" to continue Click "Yes" to continue the installation. the installation.
  • Page 12 Select "Yes, I want to restart.." for PC restart and click "Finish" to complete the installation. Select "Yes, I want to restart.." and click "Finish" to complete the installation. Double-click "UserPort.exe" to begin the installation. Double-click "UserPort.exe". Click the numbers in the red circle on the UserPort window, and click "Remove" to remove all default numbers.
  • Page 13 Add data value "300-3FF" to two areas on the UserPort window and click "Add". After key in Value "300-3FF", click [Add] to store "300-3FF". Confirm that "300-3FF" is added on the UserPort window. Then update the driver using the following procedure. 1 Click [Update].
  • Page 14 2-3-2. Preparation EDID Reading & Writing Connect the LCD TV and PC using DDC Jig. (See the fi gure below.) After connection is completed, turn the power ON of the LCD TV. LCD TV Parallel Port Parallel Port Cable D-SUB Cable Power inlet Power cord Power select switch...
  • Page 15 2-3-3. EDID Reading Double-click "WinEDID.exe" to read EDID data. Double-click "WinEDID.exe". The WinEDID window opens. The program might read the current EDID data automatically. Current EDID data might be displayed on the WinEDID window. Ignore this error message appearing several times by clicking OK. - 15 -...
  • Page 16 2-3-4. EDID Writing Click [Open] on the WinEDID window, and search for EDIC fi le(*.edi) that matches TV size. t23.edi : 23HL series Click [Open] When the fi le is found, click the fi le to open. Select EDIC fi le(*.edi) that matches TV size and click [Open] The content of selected EDID fi...
  • Page 17 Click [Write] on the WinEDID window to update EDID data. Click [Write] When checksum error message appears, ignore this error and click [Y]. Upon writing process completed, "Write Data ..Finished" message will appear. Click [Y] Upon writing process completed, "Write Data ..Finished"...
  • Page 18 2-3-5. Confi rmation of Updated EDID Data Click [Read] to confi rm that the EDID data are written as copied from original data. Click [Read] Upon reading process completed, "Read Data ..Finished" message will appear. - 18 -...

  • Page 19: Vcti Firmware Installations/Upgrading

    3. VCTi Firmware Installation/Upgrading This LCD TV uses two fi rmware programs. 1. VCTi fi rmware 2. SCALER fi rmware When the main board or IC200 is replaced, be sure to install the VCTi49xxY fi rmware. (No program is included in the IC200 spare parts.) This firmware program must also be installed when a new firmware upgrade file is supplied to improve the performance.

  • Page 20: Vcti Firmware Installations

    3-1. VCTi Firmware Installation 3-1-1. Preparation Create a new folder on PC and copy the following fi les to the folder. Toshiba_Ntsc_Vx.xxx(xxxx-xxxx).bin (Vxxx shows fi rmware version.) vct49xyi.zip Setup_Visual_I2C_v3xxx.exe SetupLptDrv9x010400.exe Setup_LptDrv_v0202_XP_2000.exe Note: These software programs are supplied as required. Double-click Setup_Visual_I2C_v3xxx.exe. Continue the installation by following instructions on the window.
  • Page 21 Select appropriate driver fi le according to your PC OS. Windows 98 : SetupLptDrv9x010400.exe Windows 2000/XP : Setup_LptDrv_v0202_XP_2000.exe Double-click the fi le appropriate for your PC OS. The following window opens. Click [I Agree] on the installation window to complete the driver installation. Click [I Agree] to complete the driver installation.
  • Page 22 3-1-2. Proceeding VCTi Firmware Upgrading Preparation: Connect PC and TV using Jig before proceeding. Disconnect AC power cord of TV. Connect Jig to PC connector on TV with D-sub cable. Connect USB connector on Jig to USB connector on PC. Connect LPT port of Jig to LPT port of PC.
  • Page 23 Double-click "vcth_tvt.vi2c" fi le in "vct49xyi" folder to install the fi rmware. Double-click "vcth_tvt.vi2c" fi le. An error message appears. Ignore this message. Click [OK] to continue installation. Click [OK] The following window appears. Double-click the fi le name next to [Load Bin -> Flash]. Double-click this fi...
  • Page 24 Select Toshiba_Ntsc_Vx.xxx(xxxx-xxxx).bin copied in 3-1-1 and click [Open]. Confi rm that the selected fi le is displayed in "Name" on the Watch Item… window. Necessary fi rmware has been appeared. Click [OK]. Click [OK] Set printer (LPT) on the vcth_txt_vi2c window. Select "File"...
  • Page 25 Click cross box mark till 21 or 22 appears. If 21 or 22 does not appear, TV may not be in the fi rmware installation mode. Unplug the AC power cord of TV and repeat steps from 3-1-2 "Preparation". Click [Erase Flash] to erase fl ash memory data. 10) Click [Load Bin ->...

  • Page 26: Scaler Firmware Installations

    3-2. SCALER Firmware Installation 3-2-1. Preparation Create a new folder on PC and copy the following fi les to the folder. CGProbe Redistributable 5.1.0.5.exe ISPUtility 1.0.0.6.exe 23HL85_scaler_Verx.xx.hex Note: These software programs are supplied as required. Double-click "CGProbe Redistributable 5.1.0.5.exe" to start installation of Genesis CGprobe Library 5.
  • Page 27 Double-click "ISPUtility1.0.0.6.exe" to start installation of Genesis ISP Utility1. Continue the installation following instructions on the window. Double-click this to start installation Select "I accept the agreement" and click [Next] Click [Next] Click [Next] to continue the installation. Click [Next] Click [Next] Select the "create a desktop icon"...
  • Page 28 3-2-2. Proceeding SCALER Firmware upgrading Preparation: Connect PC and TV using Jig before proceeding. Disconnect AC power cord of TV. Connect Jig to PC connector on TV with D-sub cable. Connect USB connector on Jig to USB connector on PC. Connect D-sub 9 pin connector on Jig to D-sub 9 pin connector on PC.
  • Page 29 Double-click "ISP Utility" icon created on the desktop to run the Genesis ISP Utility program. Set "connection" in ISP Settings to "Serial" on the Genesis ISP Utility window. Click [ ] to select "Serial" Set "Chip" in ISP Settings to "GM5221BC" on the Genesis ISP Utility window. Click [ ] to select "GM5221BC"...
  • Page 30 Set all the settings on the Connection Settings window to those in the table below. Check all the settings, and then click [OK]. Item Setting Port COM1 Baud Rate 115200 Datat Bits Parity None Stop Bits Read Interva Read Multiplier Read Constant Write Multiplier Write Constant...
  • Page 31 3-2-3. SCALER Firmware Upgrading Set TV to service mode. Starting Service Mode Press [MUTE] on the remote control once. Keep pressing [MUTE] again. Volume indication appears on the TV screen. Press [ ] on TV when the Volume indication disappears. The Service Mode window appears on the TV screen.
  • Page 32 Click [Start] on the Genesis ISP Utility window of PC to start installing new SCALER fi rmware. Click [Start] to install new SCALER fi rmware Check that the new SCALER fi rmware has been installed. Upon completion of the installation, "ISP successful"...

  • Page 33: Troubleshooting

    4. TROUBLESHOOTING Process A No Power (LED indicator off) Ref.1/1-1 Check short circuits of Main B/ D Check 15V or ST_5V or Change Power B/ D Fail of Power B/D Pass Check Output of Change VCTi( IC200) Check IC203 IC1104, IC1105, IC1106 of Main B/ D Pin 7 Level(High 5V) Fail...
  • Page 34 Process B Re- soldering or Change Check the Input / Output The defect part of IC450, Fail IC450 IC451 Pass Ref.2/2-1/2-2 Check level(0W) Check short circuits of Check the input/output of R724 Main B/D of IC701 Fail Fail Pass Pass Ref.3 Re-soldering or Change Re- soldering or Change...
  • Page 35 No Raster on Componen&video1 Repeat Process A Pass Component mode don't Check R10 Level Check short circuits of Component(High)/Video1(Low) meed check Main B/D Fail Pass Ref.5 Ref.4/4-1/4-2 Check short circuits of Main B/D Check the Input/Output Check the Input/Output of IC200 of IC300(Comb Filter) or Change the defect part Fail...
  • Page 36 ITU656 Clock Out : Y Signal Input : Ref.4 Ref.4-1 IC200(VCTI) #83 IC200, #68 Y Signal Input : Y separated output : Ref.4-2 Ref.5 IC200, #62 IC300(Comb Filter), #96 Component V Signal output : Component H Signal output : Ref.6 Ref.6-1 IC400, #64 IC400, #66...
  • Page 37 No Raster on PC signal Repeat Process A Pass Ref.7/7-1/7-2 Check the input/output Check short circuits of Check Level(High) of R724 of IC701 Main B/D Fail Fail Pass Pass Re-soldering or Change IC701 Ref.8 Re-soldering or Change Check the input/output the defect part of of IC501 Fail...
  • Page 38 No Raster on Video Signal No Raster of TV(RF) Signal (Video2, S-Video) Check 5V, 33V of TU100 Re-soldering Check the output of TU100 Repeat Process A or Change the defect Fail part Pass Pass S-Video skip this Check R248 Level square box Check short circuits of Video2(High)/S-Video(Low)
  • Page 39 No Raster on HDMI 23HL85 Repeat Process A Pass Ref.11/11-1 Re-soldering or Check the Input/Output Change the defect part of IC600 Fail check IC600 Pass Process B HDMI H Signal output : PC H Signal Input : Ref.11 Ref.11-1 IC600, #2...
  • Page 40 No Raster on Video1/Video2 Repeat Process A Pass Ref.12/12-1/12-2 Re-soldering or Check the Input/Output Change the defect part of IC200 Fail check IC200 Pass Process B ITU656 Clock Out : Ref.12 IC200(VCTI) #83 Y Signal Input : Y Signal Input : Ref.12-1 Ref.12-2 IC200, #68...
  • Page 41 No sound No Sound (Video & Component or (Video2 & S-Video) PC mode) Check Change source Check the Input source the IC800 Input Fail Check short circuits #2, #4pin Level of Main B/D Video1 : High Fail PC : Low Pass Fail Pass...
  • Page 42 No Sound (HDMI) Check the Input source Change source Input Fail Pass Re-soldering or Check the Input/Output Change the defect part of IC650 Fail check IC650 Pass Check the IC801 #2, #4 pin Level Check short circuits of HDMI_DAC_L:High Main B/D Fail HDMI_L_IN:Low Pass...

  • Page 43: Exploded View

    5. EXPLODED VIEWS 23HL85 - 43 -...

  • Page 44: 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 : 23HL85 Capacitors ..... CD Ceramic Disk : Plastic Film : Electrolytic Resistors ....
  • Page 45 Location Parts No. Reference Description C231 72795172 0CH3104K566 CERAMIC, 0.1UF 50V 10% X7R 20 C232 72795180 0CK106EF56A CERAMIC, 10UF 3216 16V 10% X7 C233 72795172 0CH3104K566 CERAMIC, 0.1UF 50V 10% X7R 20 C234 72795180 0CK106EF56A CERAMIC, 10UF 3216 16V 10% X7 C235 72795155 0CH6102K406...
  • Page 46 Location Parts No. Reference Description C343 72795188 0CK475DD57A CERAMIC, 4.7UF 2012 10V 10% X C344 72795177 0CK104CK56A CERAMIC, 0.1UF 1608 50V 10% R C346 72795171 0CH3103K516 CERAMIC, 10000PF 50V 10% B(Y5 C348 72796137 0CE226WF6DC ELECTROLYTIC, 22UF MVK 16V 20% R/T C349 72795180 0CK106EF56A...
  • Page 47 Location Parts No. Reference Description C679 72795171 0CH3103K516 CERAMIC, 10000PF 50V 10% B(Y5 C680 72795191 0CE107WF6DC ELECTROLYTIC, 100UF MVK 16V 20% R/ C681 72795171 0CH3103K516 CERAMIC, 10000PF 50V 10% B(Y5 C712 72795199 0CH8106J691 ELECTROLYTIC, 10UF 35V 20% 105STD C713 72795171 0CH3103K516 CERAMIC, 10000PF 50V 10% B(Y5 C714...
  • Page 48 Location Parts No. Reference Description C1113 72795172 0CH3104K566 CERAMIC, 0.1UF 50V 10% X7R 20 C1115 72796123 0CE477EH618 ELECTROLYTIC, 470UF KMG 25V M FL T C1116 72795189 0CH3474H946 CERAMIC, 0.47UF 25V 80%, -20% C1119 72795176 0CK103CK51A CERAMIC, 0.01UF 1608 50V 10% C1125 72796124 0CH3222K516...
  • Page 49 Location Parts No. Reference Description R109 72795352 0RH7501D622 METAL GLAZE, 7.5K OHM 1 / 10 W 20 R110 72795353 0RH7502D622 METAL GLAZE, 75K OHM 1 / 10 W 201 R112 72795394 0RJ4701D677 METAL GLAZE, 4.7K OHM 1/10 W 5% 1 R116 72795367 0RH1202D622...
  • Page 50 Location Parts No. Reference Description R333 72795373 0RJ0000D677 METAL GLAZE, 0 OHM 1/10 W 5% 1608 R334 72795382 0RJ1001D677 METAL GLAZE, 1K OHM 1/10 W 5% 160 R335 72795379 0RJ0822D677 METAL GLAZE, 82 OHM 1/10 W 5% 160 R336 72795378 0RJ0752D677 METAL GLAZE, 75 OHM 1/10 W 5% 160 R400...
  • Page 51 Location Parts No. Reference Description R750 72795364 0RH1002D622 METAL GLAZE, 10K OHM 1 / 10 W 201 R760 72795363 0RH1001D622 METAL GLAZE, 1K OHM 1 / 10 W 2012 R765 72795360 0RH0222D622 METAL GLAZE, 22 OHM 1 / 10 W 2012 R767 72795361 0RH0752D622...
  • Page 52 D101 72795239 0DS181009AA DIODE, KDS181 TP KEC SOT-2 D150 72796155 0DD184009AA DIODE, CHIP KDS184-T1(B3) K D301 72795242 0DVTB00048A DIODE, VARICAP, 1SV324E, LF TOSHIBA R D1000 72795238 0DR340009AA DIODE, MBRS340 TP FAIRCHILD D1101 72795238 0DR340009AA DIODE, MBRS340 TP FAIRCHILD D1200 72795240...
  • Page 53 72782414 68719ST783A PWB(PCB)ASSEMBLY, SIDE, ML05TA TOSHIBA 23INCH ALL SIDE 72782415 68719ST781A PWB(PCB)ASSEMBLY, CONTRO ML05TA TOSHIBA 23INCH ALL CONTROL 72782416 68719ST782A PWB(PCB)ASSEMBLY, CONTRO ML05TA TOSHIBA 23INCH ALL IR & LED TUNER TU100 72795449 6700VS0003D TUNER, TAEW-G052P LGIT MULT ACCESSORIES A701 72796118...

  • Page 54: Pc Boards Top & Bottom View

    7. PC BOARDS TOP & BOTTOM VIEW * The information contained in this section subjects to model. MAIN BOARD BOTTOM (FOIL) SIDE - 54 -...
  • Page 55 MAIN BOARD TOP (COMPONENT) SIDE - 55 -...
  • Page 56 CONTROL BOARD CONTROL BOARD BOTTOM (FOIL) SIDE TOP (COMPONENT) SIDE SIDE A/V BOARD SIDE A/V BOARD BOTTOM (FOIL) SIDE TOP (COMPONENT) SIDE IR BOARD IR BOARD BOTTOM (FOIL) SIDE TOP (COMPONENT) SIDE - 56 -...

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