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Toshiba 19DV733G Service Manual

Lcd tv/dvd combination
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LCD TV/DVD COMBINATION
The above models are classified as green products (*1), as indicated by the underlined serial numbers.
This Service Manual describes replacement parts for the green products. When repairing these green
product(s), use the part(s) described in this manual and lead-free solder (*2).
For (*1) and (*2), see the next page.
©2010 Toshiba Corporation
),/( 12 *5
19DV733G
19DV734G
22DV733G
22DV734G
26DV733G

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Summary of Contents for Toshiba 19DV733G

  • Page 1 The above models are classified as green products (*1), as indicated by the underlined serial numbers. This Service Manual describes replacement parts for the green products. When repairing these green product(s), use the part(s) described in this manual and lead-free solder (*2). For (*1) and (*2), see the next page. ©2010 Toshiba Corporation...
  • Page 2 Hazardous Substances. From July 1, 2006, the RoHS Directive will prohibit any marketing of new products containing restricted substances. Increasing attention is given to issues related to global environment. Toshiba Corporation recognises environmental protection as a key management task, and is doing its utmost to enhance and improve the quality and scope of its environmental activities.

  • Page 3: Table Of Contents

    1. Safety Notices and Precautions ................... 4 Preparation of Servicing ....................5 Servicing Environment ....................5 2. General Specifications ....................6 19DV733G / 19DV734G ..................... 6 22DV733G / 22DV734G ..................... 7 26DV733G ........................8 3. Function Testing ......................9 Remote Control Key Codes ..................9 Service Mode List .....................

  • Page 4: Safety Notices And Precautions

    1. Safety Notices and Precautions Prior to using this service guide, ensure that you have carefully followed all the procedures outlined in the 19DV733G/19DV734G/22DV733G/22DV734G/26DV733G LCD TV user manual. Make sure to note and follow all warnings and instructions marked on the product.

  • Page 5: Preparation Of Servicing

    Preparation of Servicing The laser diode used for a pickup head may be destroyed with external static electricity. Moreover, even if it is operating normally after repair, when static electricity discharge is received at the time of repair, the life of the product may be shortened. Please perform the following measure against static electricity, and be careful of destruction of a laser diode at the time of repair.

  • Page 6: General Specifications

    2. General Specifications The product specifications listed in this section are subject to change without notice. 19DV733G / 19DV734G Item Description Panel Size (approximate screen size, diagonal) 19.0 inch Type Colour TFT LCD Resolution 1366 x 768 pixel TV System Analogue PAL UK, IR, CCIR, French System, B/G, D/K, I/I, L/L’...

  • Page 7: 22Dv733G / 22Dv734G

    22DV733G / 22DV734G Item Description Panel Size (approximate screen size, diagonal) 22.0 inch Type Colour TFT LCD Resolution 1366 x 768 pixel TV System Analogue PAL UK, IR, CCIR, French System, B/G, D/K, I/I, L/L’ Digital DVB-T (OFDM 2k/8k 16QAM/64QAM) DVB-C (4M-7M kS/s, 16QAM/32QAM/64QAM/128QAM/256QAM) Colour system PAL/SECAM/NTSC 3.58/NTSC 4.43/PAL 60...

  • Page 8: 26Dv733G

    26DV733G Item Description Panel Size (approximate screen size, diagonal) 26.0 inch Type Colour TFT LCD Resolution 1366 x 768 pixel TV System Analogue PAL UK, IR, CCIR, French System, B/G, D/K, I/I, L/L’ Digital DVB-T (OFDM 2k/8k 16QAM/64QAM) Colour system PAL/SECAM/NTSC 3.58/NTSC 4.43/PAL 60 Antenna input VHF/UHF 75 ohm, IEC-type...

  • Page 9: Function Testing

    3. Function Testing Key Name Custom Code Key Code 40-BF 40-BF Remote Control Key Codes 40-BF 40-BF 40-BF 40-BF 40-BF 40-BF 40-BF DISPLAY 40-BF 40-BF MUTE 40-BF TV/RADIO 40-BF CH UP 40-BF VOL+ 40-BF DVD MENU 40-BF INPUT 40-BF CH DOWN 40-BF VOL- 40-BF...

  • Page 10: Service Mode List

    Service Mode List Item TV Mode TV Key Remote Key Time Operations VOL- 2 sec. Reset the TV to factory default, except factory data. VOL- 2 sec. Reset the DVD to factory (no disc) default. VOL- 2 sec. Display the POWER ON total hours, Main board version, checksum and version of boot sector*...

  • Page 11: Hotel Mode Function

    Hotel Mode Function Hotel Mode Maximum Volume Panel Button Respond Menu Button Respond Teltext Button Respond Input Mode Start Fixed Volume Fixed Picture Mode Hotel Clone USB to TV 26" CMO EH2V1.02.052 Reset >> ▲▼ : Select ◄► : Adjust To set the Hotel Mode, please follow the steps below: 1.
  • Page 12 Setting item Setting value Initial value Function Maximum Volume 0-50 To set the maximum volume value. Panel Button Respond/ Respond To enable/disable the operation of the buttons on No Respond the TV panel.* Menu Button Respond/ Respond To enable/disable the operation of the MENU No Respond button on the TV panel and remote control.* Teletext Button...
  • Page 13 *4 The maximum value that Fixed Volume can be set is based on that of Maximum Volume. For example, if Maximum Volume is set to “30,” the volume range that Fixed Volume can be adjusted is from 0 to 30 or off. *5 Input Mode Start behaviour: The default channel number is 0001.

  • Page 14: System Disassembly

    4. System Disassembly Disassembly Tools The following tools are required for disassembling the system. • Wrist-grounding strap and conductive mat for preventing electrostatic discharge • Philips screwdriver • Hex screwdriver Disassembly Reminders • Electrostatic Discharge (ESD) precautions should be observed to prevent damaging the internal components.

  • Page 15: Disassembly Procedures

    Disassembly Procedures 19DV733G / 19DV734G 1. Lay down the LCD TV on a flat, stable surface with the rear cover facing up. Make sure the lip edge of the front bezel is hanging over the edge of the surface. 2. Remove the two screws securing the pedestal stand, and then remove the stand.
  • Page 16 5. Disconnect the inverter cables from the power board. 6. Remove the tape and release the LVDS cable from the panel. 7. Detach the panel from the front cover.
  • Page 17 8. Remove the ten screws securing the main board (left) and power board (right). 9. Remove the four supports from the main board. 10. Remove the screw securing the IR board, and then disconnect the IR cable from the IR board.
  • Page 18 12. Turn the power board over, disconnect the AC and power cables from the power board, and then remove the power board. 13. Disconnect the control cable from the Key board, and then release the main board from the back cover. 14.
  • Page 19 15. Disconnect the cables from the DVD module and main board. 16. Pull out the AC cable from the back cover of the TV.

  • Page 20: 22Dv733G / 22Dv734G

    22DV733G / 22DV734G 1. Disconnect the AC power cable from the TV. 2. Remove the two screws securing the pedestal stand, and then remove the stand. 3. Remove the nine screws securing the rear panel cover. 4. Open and remove the left rear panel door. 5.
  • Page 21 6. Detach the top part of the rear panel cover from the housing, and remove the rear panel. 7. Remove the tape and release the LVDS cable from the panel. 8. Detach the panel from the front cover.
  • Page 22 9. Remove the screws securing the main board (left) and power board (right). 10. Remove the three supports from the main board. 11. Remove the screw securing the IR board, and then disconnect the IR cable from the IR board. 12.
  • Page 23 13. Turn the power board over, disconnect the AC and power cables from the power board, and then remove the power board. 14. Disconnect the control cable from the main board, and then release the main board from the back cover. 15.
  • Page 24 17. Remove the Key board from the Key module. 18. Remove the four screws securing the DVD module. 19. Disconnect the cables from the DVD module and main board. 20. Pull out the AC cable from the back cover of the TV.

  • Page 25: 26Dv733G

    26DV733G 1. Disconnect the AC power cable from the TV. 2. Remove the three screws securing the pedestal stand, and then remove the stand. 3. Remove the screws securing the rear panel cover. 4. Open and remove the left rear panel door. 5.
  • Page 26 6. Remove the tape and release the LVDS cable from the panel. 7. Remove the eight screws securing the panel and then remove the rubber and tape from the panel. 8. Detach the panel from the front cover.
  • Page 27 9. Remove the screws securing the control board, detach the control board and then release the control cable. 10. Separate the control board from its plastic bracket. 11. Remove the screw securing the IR board, and then disconnect the IR cable from the IR board.
  • Page 28 12. Remove the six screws from the main board (left), and remove the four screws and one rubber from the power board (right). 13. Remove the seven springs and two supports from the main board. 14. Detach the right and left speakers, and then disconnect the speaker cables.
  • Page 29 15. Turn the power board over, disconnect the AC and power cables from the power board, and then remove the power board. 16. Remove the four screws securing the DVD module. 17. Disconnect all cables from the DVD module and main board. 18.

  • Page 30: Exploded Diagrams

    5. E xploded Diagrams 19DV 733G...
  • Page 31 19DV 734G...
  • Page 32 CUSHION, EPS, TOP, GEU1910 75019669 42.71X26.001 BAG, EPE + PE, 620 X 580, T=0.5MM 75020151 44.72K01.052 CARTON BOX, 550 X 200 X 476(467), 19DV733G 75020144 90.72K28.010G DOCUMENTS KIT, FOR GEHII V1 75019676 56.04050.G51 PC BOARD ASSY, POWER, 50W, FSP050-2PI06A PP 75019403 86.1B326.100...
  • Page 33 PARTS LIST: 19DV734G Location TSB P/N Reference No. Description 75019519 90.70G11.006 REMOTE CONTROL HAND UNIT, SE-R0330 75019593 91.71X10.E02G PC BOARD ASSY, KEY PAD 75019592 91.71X10.E01G PC BOARD ASSY, IR 75020057 50.72K27.021 CABLE ASSY, 30PIN-LVDS-TR-GEU1910 75019514 27.01518.G51 CORD ASSY, POWER 75020075 50.72K30.001 CABLE ASSY, 14P-DVD-SIGNAL-GL-GEU1910 75020073 50.72K28.001 CABLE ASSY, 14P-PSU-GL-GEU1910...
  • Page 34 22DV 733G...
  • Page 35 22DV 734G...
  • Page 36 PARTS LIST: 22DV733G Location TSB P/N Reference No. Description 75019509 90.70G11.005 REMOTE CONTROL HAND UNIT, SE-R0329 75019593 91.71X10.E02G PC BOARD ASSY, KEY PAD 75019592 91.71X10.E01G PC BOARD ASSY, IR 75020090 50.72K35.001 CABLE ASSY, 30PIN-LVDS-TR-G2210-GEU 75019617 50.71X17.001 CABLE ASSY, 14P-PSU-GL-G2210 75019514 27.01518.G51 CORD ASSY, POWER 75020086 50.72K22.011 CABLE ASSY, 14P-DVD-SIGNAL-HT-G2210-GEU...
  • Page 37 PARTS LIST: 22DV734G Location TSB P/N Reference No. Description 75019519 90.70G11.006 REMOTE CONTROL HAND UNIT, SE-R0330 75019593 91.71X10.E02G PC BOARD ASSY, KEY PAD 75019592 91.71X10.E01G PC BOARD ASSY, IR 75020090 50.72K35.001 CABLE ASSY, 30PIN-LVDS-TR-G2210-GEU 75019617 50.71X17.001 CABLE ASSY, 14P-PSU-GL-G2210 75019514 27.01518.G51 CORD ASSY, POWER 75020098 50.72K22.001 CABLE ASSY, 14P-DVD-SIGNAL-GL-G2210-GEU...
  • Page 38 26DV 733G...
  • Page 39 PARTS LIST: 26DV733G Location TSB P/N Reference No. Description 75019509 90.70G11.005 REMOTE CONTROL HAND UNIT, SE-R0329 75019593 91.71X10.E02G PC BOARD ASSY, KEY PAD 75019592 91.71X10.E01G PC BOARD ASSY, IR 75020114 50.71X25.031 CABLE ASSY, 30P-LVDS-TL-GEU2610 75019514 27.01518.G51 CORD ASSY, POWER 75020117 50.72K13.011 CABLE ASSY, 14P-DVD-SIGNAL-HT-G2610 75020119 50.72K16.011 CABLE ASSY, 4P-SPEAKER-HT-G2610...

  • Page 40: 19Dv733G / 19Dv734G

    6. Packing Diagrams 19DV733G / 19DV734G...

  • Page 41: 22Dv733G / 22Dv734G

    22DV733G / 22DV734G...

  • Page 42: 26Dv733G

    26DV733G...

  • Page 43: Block Diagrams

    7. Block Diagrams Main...
  • Page 44 DVD module DVD Block Diagram for DAV-RR953...

  • Page 45: Printed Circuit Board

    8. Printed Circuit Board Top (trace)
  • Page 46 Bottom (trace)
  • Page 47 Top (component)
  • Page 48 Bottom (component)

  • Page 49: Interconnection Diagrams

    9. Interconnection Diagrams 19DV733G / 19DV734G...

  • Page 50: 22Dv733G / 22Dv734G

    22DV733G / 22DV734G...

  • Page 51: 26Dv733G

    26DV733G...

  • Page 52: Schematic Diagrams

    10. Schematic Diagrams DDR II I/F SCHEMATIC DIAGRAM...
  • Page 53 SIO I/F SCHEMATIC DIAGRAM...
  • Page 54 TUNER SCHEMATIC DIAGRAM...
  • Page 55 HDMI SCHEMATIC DIAGRAM...
  • Page 56 CVBS & YPBPR SCHEMATIC DIAGRAM...
  • Page 57 SCART SCHEMATIC DIAGRAM...
  • Page 58 AUDIO & SPDIF SCHEMATIC DIAGRAM '9'B63',)B8B287...
  • Page 59 VGA SCHEMATIC DIAGRAM...
  • Page 60 AUDIO AMPLIFIER SCHEMATIC DIAGRAM...
  • Page 61 CI-GUEST BUS SCHEMATIC DIAGRAM...
  • Page 62 GPIO TST SCHEMATIC DIAGRAM 6&39-1*3...
  • Page 63 LVDS I/F SCHEMATIC DIAGRAM...
  • Page 64 KEYPAD/IR/LED SCHEMATIC DIAGRAM 0/9*19%3*3 0/9*19%3*3 0/9*19%3*3 0/9*19%3*3 0/9*19%3*3 0/9*19*3 0/9*19%3*3 0/9*19%3*3 0/9*19%3*3 0/9*19%3*3 0/9*19%3*3 0/9*19%3*3 0/9*19%3*3 0/9*19%3*3 .5)*3 .5)*3 0/9*19%3*3 0/9*19%3*3...
  • Page 65 675 TVUC ADC SCHEMATIC DIAGRAM 6PDUW FDUG...
  • Page 66 POWER & GND1 SCHEMATIC DIAGRAM...
  • Page 67 POWER & GND2 SCHEMATIC DIAGRAM...
  • Page 68 POWER SUPPLY SCHEMATIC DIAGRAM...
  • Page 69 POWER TREE SCHEMATIC DIAGRAM...

  • Page 70: Troubleshooting

    11. Troubleshooting No display on screen (screen is black, no power) No power / No video Is the TV Plug TV power cord plugged to to AC outlet AC outlet? Does the power turn on (LED green) if the Which one is the keypad or remote problem related to? control is pressed?
  • Page 71 Power check step Power step check Does power Check power board have 5Vsb? Have 3.3Vsb? Check U20 Have 1.1Vsb? Check U23 Does power have 12V? Have 6V? Check U25 Have 5V? Check U28 Have 3.3V? Check U26 Have 1.8V? Check U27 (for DDR) Check U22, U24 Have 1.1V?
  • Page 72 Video problem Video problem Check panel power on LVDS cable: U18 pin 5,6,7,8 should have 5V Is OSD on the screen? (19”/22”), 12V (26”). Check backlight on/off control: CN13 pin2 should be 2~5Vdc Check if signal cable is connected and has signal output. Which input has no picture? Component...
  • Page 73 Speaker no sound (Test signal: 0.5Vrms @1KHz sine waveform) Audio problem No Audio issue Disable the MUTE function Did you enable or increase the volume by the MUTE function pressing the VOL+ button or set speaker to on the remote control. “OFF”? Note: Speaker will be Please make sure the signal cable is...

  • Page 74: Firmware

    12. Firmware Checking the LCD TV Firmware Version Follow these steps: 1. Turn on the LCD TV. 2. Press and hold the – button on the TV, and at the same time, press and hold the 8 button on the remote control. 3.
  • Page 75 4. Highlight Yes and then press ENTER. The SYS firmware update begins. 5. After the SYS firmware update completes, the below window appears. 6. Remove the USB drive from the USB service port, and then press ENTER. The below window appears. 7.

This manual is also suitable for:

19dv734g22dv733g22dv734g26dv733g

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