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.
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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 •...
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.
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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.
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.
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OPTION DEFAULT DATA 15VL56B Option 1 15VL56B SCART Side Comp 16:9 200 PR Text ACMS Option 2 15VL56B HiDev Hotel I ll SAVE Turbo Vol Ch/Aus Option 3 15VL56B Language Txt Lang Inch opt PANEL 20VL56B/G Option 1 20VL56B 20VL56G...
Connect Pattern Generator to the 15-pin D-Sub Jack of LCD TV. Change the TV input mode to PC mode. Set Pattern Generator to the following: 15VL56B : XGA (1024x768) 16-step or 11-step grayscale 20VL56B,20VL56G : VGA (640x480) 16-step grayscale Go into service mode, and Auto Gain menu appears, and then press VOL [+].
2-3. DDC EDID Data Read & Write The following software programs are used to read/write DDC EDID data. DLPortIO.exe t15.edi t20.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 PC. (See the fl...
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2-3-1. Port Setup (Windows 2000, XP only) Copy "UserPort.sys" fi le to c:\windows\system32\drivers. - 11 -...
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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.
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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.
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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". Confi rm that "300-3FF" is added on the UserPort window. Then update the driver using the following procedure.
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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...
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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. - 16 -...
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2-3-4. EDID Writing Click [Open] on the WinEDID window, and search for EDIC fi le(*.edi) that matches TV size. t15.edi : 15VL56B t20.edi : 20VL56B,20VL56G 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...
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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"...
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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. - 19 -...
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 firmware. (No program is included in the IC200 spare parts.) This fi...
3-1. VCTi Firmware Installation 3-1-1. Preparation Create a new folder on PC and copy the following fi les to the folder. VCTi_TSBxxx_xxx_Vxxx.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.
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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.
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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.
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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...
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Select VCTi_TSBxxx_xxx_Vxxx.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"...
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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 ->...
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 Toshiba_15(SCALER)_Verx.xx.hex (for 15-inch TV) Toshiba_20(SCALER)_Verx.xx.hex (for 20-inch TV) Note: These software programs are supplied as required. Double-click "CGProbe Redistributable 5.1.0.5.exe"...
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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"...
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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.
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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"...
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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...
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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.
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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"...
4. TROUBLESHOOTING Process A No power Ref.1/1-1 Check 15V or ST_ 5V Check short circuits of Main B/D or Change Power B/D of Power B/D Fail Pass Change VCTi(IC200) Check Output of Check IC 1004, IC1005 Of Main B/D IC1004, IC1005(Main B/D) PIN 7 LEVEL(High 3.3V) Fail Fail...
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No Raster on Video Signal No Raster on TV(RF) (Video1, Video2) Signal Pass Check 5V, 33V of TU100 Check the Output of Repeat Process A Re-soldering or TU100(Tuner) Fail Change the defect part Pass Check short circuits of Main B/D Check the Input source &...
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No Raster on PC Signal Repeat Process A Pass Ref.3/3-1 Check the Input/ Check R715 Check short circuits of Main B/D Output of IC701 Level(LOW 0V) Fail Fail Pass Pass Re-soldering or Change IC701 Ref.4/4-1 Check the Input / Output Re-soldering or IC500(gm2221) of Main Change IC500...
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No Raster on video Signall (Video3 , S-video) Repeat Process A Pass Check the Input Check short circuits of Main B/D source & side B/D Fail Pass Check R212 Check short circuits of Main B/D 1.Video2 : HIGH & JACK B/D Fail 2.s-video : LOW Pass...
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No Sound No Sound (ALL MODE) (Only VIDEO 1 or PC mode) Change source Check short circuits Check the Input Check the R750 Level source input Video1 : High of Main B/D Fail Fail PC : Low Pass Pass Pass Check the Input/Output Check Input / Ouput Re-soldering or...
• 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 : 15VL56B/20VL56B/20VL56G Capacitors ..... CD Ceramic Disk : Plastic Film : Electrolytic Resistors ....
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CONTROL BOARD CONTROL BOARD BOTTOM (FOIL) SIDE TOP (COMPONENT) SIDE SIDE BOARD (20VL56B/G) SIDE BOARD (20VL56B/G) BOTTOM (FOIL) SIDE TOP (COMPONENT) SIDE SIDE BOARD (15VL56B) SIDE BOARD (15VL56B) BOTTOM (FOIL) SIDE TOP (COMPONENT) SIDE - 50 -...
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TOP (COMPONENT) SIDE IR BOARD IR BOARD BOTTOM (FOIL) SIDE TOP (COMPONENT) SIDE HEADPHONE BOARD (20VL56B/G) HEADPHONE BOARD (20VL56B/G) HEADPHONE BOARD (15VL56B) BOTTOM (FOIL) SIDE TOP (COMPONENT) SIDE BOTTOM (FOIL) SIDE HEADPHONE BOARD (15VL56B) TOP (COMPONENT) SIDE - 51 -...
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Model 15VL56B, 20VL56B/G Power source 100 - 240V AC, 50/60 Hz Power consumption 15VL56B : 50 W, 0.8 W (standby mode) 20VL56B/G: 65 W, 0.8 W (standby mode) Dimensions 15VL56B : 379 mm (W) 388 mm (H) 203 mm (D)
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Visible size (diagonal) 15VL56B : 38.0 cm 20VL56B/G: 51.0 cm Number of pixels 15VL56B : 1024 (H) dots × 768 (V) dots 20VL56B/G: 640 (H) dots × 480 (V) dots Audio power 5 W + 5 W (10% THD) Speakers 40 ×...
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FILE NO. 050-200533 SERVICE MANUAL LCD Color Television 15VL56B 20VL56B 20VL56G Published in Japan, Sep. 2005 (YC) TOSHIBA CORPORATION, 2005...
SCALER ................................7/17 INTERFACE ................................ 8/17 POWER ................................9/17 COMPONENT JACK ............................10/17 D-JACK ................................11/17 SCART JACK ..............................12/17 KEY ................................... 13/17 HEADPHONE ..............................14/17 LED & IR ................................15/17 SIDE (20VL56B/G) ............................16/17 SIDE (15VL56B) ............................... 17/17 - 52 -...
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Either component YPbPr signal or PC RGB signal is selected by the switching IC and inputted to a scaler (GM2221), which is sent to the LCD module after being modified to an LVDS signal through the integrated LVDS IC.(Only 15VL56B) Or, it is sent to the LCD module as a TTL output.(Only 20VL56B/G) VCTi is the main microprocessor that handles video signal processing and sound signal processing.
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* The information contained in this section subjects to model. 15VL56B/20VL56B/G TUNER (1/17) - 57 -...