Toshiba 15DV703R Service Manual
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Toshiba 15DV703R Service Manual

15, 19, 22, 26, 32-inch class lcd tv/dvd combination
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FILE No. 810-201090GR

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  • Page 1 FILE No. 810-201090GR...
  • Page 5 Toshiba Corporation recognizes environmental protection as a key management tasks, and is doing its utmost to enhance and improve the quality and scope of its environmental activities. In line with this, Toshiba proactively promotes Green Procurement, and seeks to purchase and use products, parts and materials that have low environmental impacts.

  • Page 6: Table Of Contents

    Table of Contents 1. Safety Notices and Precautions.............. 5 Preparation of Servicing ................6 Servicing Environment ................6 2. General Specifications................7 15DV703R ....................7 19DV703R/19DV704R................8 22DV703R/22DV704R ................9 26DV703R ....................10 32DV703R ....................11 3. Function Testing..................12 Remote Control Key Codes ..............
  • Page 7 7. Block Diagrams..................60 8. Printed Circuit Board................64 9. Schematic Diagrams................68 10. Troubleshooting..................80 11. Firmware ....................84...

  • Page 8: 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 15DV703R/19DV703R/22DV703R/26DV703R/32DV703R user manual. Make sure to note and follow all warnings and instructions marked on the product. Keep these instructions for future reference.

  • Page 9: 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 10: General Specifications

    2. General Specifications The product specifications listed in this section are subject to change without notice. 15DV703R Item Descriptions Panel Size (approximate screen size, diagonal) 15.6 inch (396.2 mm) Type Color TFT LCD Resolution 1366 x 768 Viewing angle 170° (H) / 160° (V) TV system SECAM D/K Russia, PAL, B/G, D/K, I, L/L’...

  • Page 11: 19Dv703R/19Dv704R

    19DV703R/19DV704R Item Descriptions Panel Size (approximate screen size, diagonal) 18.5 inch (469.9 mm) Type Color TFT LCD Resolution 1366 x 768 Viewing angle 170° (H) / 160° (V) TV system SECAM D/K Russia, PAL, B/G, D/K, I, L/L’ Antenna input VHF / UHF 75 unbalanced DVD/CD player...

  • Page 12: 22Dv703R/22Dv704R

    22DV703R/22DV704R Item Descriptions Panel Size (approximate screen size, diagonal) 22.0 inch (558.8 mm) Type Color TFT LCD Resolution 1366 x 768 Viewing angle 170° (H) / 160° (V) TV system SECAM D/K Russia, PAL, B/G, D/K, I, L/L’ Antenna input VHF / UHF 75 unbalanced DVD/CD player...

  • Page 13: 26Dv703R

    26DV703R Item Descriptions Panel Size (approximate screen size, diagonal) 26.0 inch (660.4 mm) Type Color TFT LCD Resolution 1366 x 768 Viewing angle 176° (H) / 176° (V) TV system SECAM D/K Russia, PAL, B/G, D/K, I, L/L’ Antenna input VHF / UHF 75 unbalanced DVD/CD player...

  • Page 14: 32Dv703R

    32DV703R Item Descriptions Panel Size (approximate screen size, diagonal) 32.0 inch (812.8 mm) Type Color TFT LCD Resolution 1366 x 768 Viewing angle 170° (H) / 160° (V) TV system SECAM D/K Russia, PAL, B/G, D/K, I, L/L’ Antenna input VHF / UHF 75 unbalanced DVD/CD player...

  • Page 15: Function Testing

    3. Function Testing Remote Control Key Codes 40 BF DISPLAY 40 BF MUTE 40 BF DVD MENU 40 BF TOP MENU 44 BB SUBTITLE 44 BB INPUT 40 BF 40 BF Hold (Teletext) AUDIO SELECT 44 BB VOL+ 40 BF VOL- 40 BF CH RTN / ZOOM...

  • Page 16: Service Mode List

    Service Mode List Item TV mode TV key Remote key Time Operations Reset the TV to factory VOL- 2 sec. default. DVD (no Reset the DVD to factory VOL- 2 sec. disc) default. DVD (no Enter DVD module update VOL- 2 sec.

  • Page 17: Hotel Mode Function

    Hotel Mode Function Hotel Mode Maixmum Volume 50 Panel Button Respond Menu Button Respond Input Mode Start Fixed Volume Fixed Picture Mode Hotel Clone Reset : Adjust EXIT: End To set the Hotel Mode, please follow the steps below: Set the VOLUME to minimum. Press and hold the –...

  • Page 18: 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 19: Disassembly Procedures

    Disassembly Procedures 15DV703R Lay down the LCD TV on a flat, stable surface with the rear cover facing up. Make sure the edge of the front bezel is hanging over the edge of the surface. Remove the screws holding the TV to its stand, and then remove the stand.
  • Page 20 Disconnect the inverter cables from the power board. Remove the tape and release the LVDS cable from the panel. Detach the panel from the front cover.
  • Page 21 Remove the eight screws securing the main board (left) and power board (right). Remove the four supports on the main board. 10. Remove the two screws securing the IR board, and then disconnect the IR cable from the IR board. 11.
  • Page 22 12. Turn the power board over, disconnect the AC and power cable from the power board, and then remove the power board. 13. Remove the two screws securing the key board and disconnect the control cable from the key board, and then release the key board from the back cover. 14.
  • Page 23 16. Pinch the hook to release the AC cable and then push it out. 17. Pull out the AC cable from the back cover of the TV.

  • Page 24: 19Dv703R/19Dv704R

    19DV703R/19DV704R Lay down the LCD TV on a flat, stable surface with the rear cover facing up. Make sure the edge of the front bezel is hanging over the edge of the surface. Remove the screws holding the TV to its stand, and then remove the stand. Remove the screws securing the rear panel cover.
  • Page 25 Disconnect the inverter and panel power cable from the power board. Remove the tape and release the LVDS cable from the panel. Detach the back cover.
  • Page 26 Remove the panel from the front cover. Remove the screws securing the power board (right) and main board (left). 10. Remove the two springs and one support from the power board.
  • Page 27 11. Release the power board. (Release the lower latch and then the upper latch). 12. Disconnect the power and AC cables from the power board, and then remove the power board. 13. Remove the three supports securing the main board. 14.
  • Page 28 15. Disconnect the control cable from the main board. 16. Remove the one screw securing the IR board. 17. Disconnect the IR cable and remove the IR board. 18. Detach the left and right speakers and then disconnect the speaker cables.
  • Page 29 19. Remove the four screws securing the DVD module. 20. Disconnect the cables from the DVD module and main board. 21. Remove the two screws securing the control board and then release the control board. 22. Remove the control cable and then separate the control board from its plastic bracket.
  • Page 30 23. Pinch the hook to release the AC cable and then push it out. 24. Pull out the AC cable from the back cover of the TV. Important: Take note of the spring orientation when reassembling the TV. Main board Power board...

  • Page 31: 22Dv703R/22Dv704R

    22DV703R/22DV704R Lay down the LCD TV on a flat, stable surface with the rear cover facing up. Make sure the edge of the front bezel is hanging over the edge of the surface. Remove the two screws holding the TV to its stand, and then remove the stand. Remove the screws securing the rear panel cover.
  • Page 32 Disconnect the inverter cables from the power board. Remove the tape and release the LVDS cable from the panel. Detach the panel from the front cover.
  • Page 33 Remove the screws securing the main board (left) and power board (right). Remove the four supports on the main board. 10. Remove the one screw securing the IR board, and then disconnect the IR cable from the IR board. 11. Detach the right and left speakers, and then disconnect the speaker cables.
  • Page 34 12. Turn the power board over, disconnect the AC and power cable from the power board, and then remove the power board. 13. Disconnect the control cable from the main board, and then release the main board from back cover. 14.
  • Page 35 16. Pinch the hook to release the AC cable and then push it out. 17. Pull out the AC cable from the back cover of the TV. Important: Take note of the spring orientation when reassembling the TV. Main board Power board...
  • Page 36 26DV703R Lay down the LCD TV on a flat, stable surface with the rear cover facing up. Make sure the edge of the front bezel is hanging over the edge of the surface. Remove the screws holding the TV to its stand, and then remove the stand. Remove the screws securing the back cover.
  • Page 37 Disconnect the inverter cables from the power board. Remove the tape and release the LVDS cable from the panel. Remove the eight screws securing the panel.
  • Page 38 Detach the panel from the front cover. 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.
  • Page 39 11. Remove the one screw securing the IR board, and then disconnect the IR cable from the IR board. 12. Remove the three screws on the main board (left), and remove the four screws and one support on the power board (right). 13.
  • Page 40 15. Turn the power board over, disconnect the AC and power cable from the power board, and then remove the power board. 16. Remove the four screws securing the DVD module. 17. Disconnect all the cables from the DVD module and main board. 18.
  • Page 41 19. Pull out the AC cable from the back cover of the TV. Important: Take note of the spring orientation when reassembling the TV. Main board Power board...
  • Page 42 32CV100U Lay down the LCD TV on a flat, stable surface with the rear cover facing up. Make sure the edge of the front bezel is hanging over the edge of the surface. Remove the screws holding the TV to its stand, and then remove the stand. Remove the fourteen screws securing the rear panel cover.
  • Page 43 Disconnect the inverter cable from the power board. Remove the tape and release the LVDS cable from the panel. Detach the panel from the front cover.
  • Page 44 Remove the screws securing the control board, detach the control board and then release the control cable. Separate the control board from its plastic bracket. 10. Remove the one screw securing the IR board, and then disconnect the IR cable from the IR board.
  • Page 45 11. Remove the four screws on the main board (left), the six screws on the power board (right), and remove the eight springs on them. 12. Remove the four supports on the main board. 13. Detach the right and left speakers, and then disconnect the speaker cables. 14.
  • Page 46 15. Remove the four screws securing the DVD module. 16. Disconnect all the cables from the DVD module and main board. 17. Pinch the hook to release the AC cable and then push it out. 18. Pull out the AC cable from the back cover of the TV.
  • Page 47 Important: Take note of the spring orientation when reassembling the TV. Main board Power board...
  • Page 48 5. Expladed Diagram 15DV703R...
  • Page 49 PARTS LIST: 15DV703R Location TSB P/N Reference No. Description 75019535 90.70G11.001 REMOTE CONTROL HAND UNIT, SE-R0319 75019666 91.71X10.002G PC BOARD ASSY, IR TV GAT2 15 PACKAGE MP 75019593 91.71X10.E02G PC BOARD ASSY, KEY PAD 75019514 27.01518.G51 CORD ASSY, POWER 75019656 50.71X05.001 CABLE ASSY, 8P-DVD-POWER-GL-G1510 75019658 50.71X07.011 CABLE ASSY, 4P-SPEAKER-HT-G1510...
  • Page 50 19DV703R...
  • Page 51 PARTS LIST: 19DV703R TSB P/N TSB P/N Location Reference No. Description (OLD) (NEW) AJ000129 75019535 90.70G11.001 REMOTE CONTROL HAND UNIT, SE-R0319 AJ000349 75019645 91.71X10.A01G PC BOARD ASSY, KEY PAD AJ000219 75019592 91.71X10.E01G PC BOARD ASSY, IR AJ000346 75019640 50.71X15.011 CABLE ASSY, 4P-SPEAKER-HT-G1910 AJ000345 75019639 50.71X14.001 CABLE ASSY, 14P-DVD-SIGNAL-GL-G1910...
  • Page 52 19DV704R...
  • Page 53 PARTS LIST: 19DV704R Location TSB P/N Reference No. Description 75019553 90.70G11.002 REMOTE CONTROL HAND UNIT, SE-R0337 75019645 91.71X10.A01G PC BOARD ASSY, KEY PAD 75019592 91.71X10.E01G PC BOARD ASSY, IR 75019674 50.71Y16.021 CABLE ASSY, LVDS, 30P-LVDS-TR-GRU1910 75019514 27.01518.G51 CORD ASSY, POWER 75020154 50.71X15.001 CABLE ASSY, 4P-SPEAKER-GL-G1910 75019639 50.71X14.001 CABLE ASSY, 14P-DVD-SIGNAL-GL-G1910 75019636 50.71X11.001 CABLE ASSY, 3P-KEY-GL-G1910...
  • Page 54 22DV703R...
  • Page 55 PARTS LIST: 22DV703R TSB P/N TSB P/N Location Reference No. Description (OLD) (NEW) AJ000129 75019535 90.70G11.001 REMOTE CONTROL HAND UNIT, SE-R0319 AJ000220 75019593 91.71X10.E02G PC BOARD ASSY, KEY PAD AJ000219 75019592 91.71X10.E01G PC BOARD ASSY, IR AJ000132 75019514 27.01518.G51 CORD ASSY, POWER AJ000243 75019620 50.71X20.001 CABLE ASSY, 8P-DVD-POWER-GL-G2210...
  • Page 56 22DV704R...
  • Page 57 PARTS LIST: 22DV704R Location TSB P/N Reference No. Description 75019553 90.70G11.002 REMOTE CONTROL HAND UNIT, SE-R0337 75019593 91.71X10.E02G PC BOARD ASSY, KEY PAD 75019592 91.71X10.E01G PC BOARD ASSY, IR 75019514 27.01518.G51 CORD ASSY, POWER 75019684 50.71X24.021 CABLE ASSY, LVDS, 30PIN 75019620 50.71X20.001 CABLE ASSY, 8P-DVD-POWER-GL-G2210 75019617 50.71X17.001 CABLE ASSY, 14P-PSU-GL-G2210 75019622 50.71X22.001 CABLE ASSY, SPEAKER...

  • Page 58: 26Dv703R

    26DV703R...
  • Page 59 PARTS LIST: 26DV703R TSB P/N TSB P/N Location Reference No. Description (OLD) (NEW) AJ000129 75019535 90.70G11.001 REMOTE CONTROL HAND UNIT, SE-R0319 AJ000220 75019593 91.71X10.E02G PC BOARD ASSY, KEY PAD AJ000219 75019592 91.71X10.E01G PC BOARD ASSY, IR AJ000132 75019514 27.01518.G51 CORD ASSY, POWER AJ000365 75019692 50.71Y09.001 SOCKET, AC INLET, WITH CABLE, GRU2610...

  • Page 60: 32Dv703R

    32DV703R...
  • Page 61 PARTS LIST: 32DV703R TSB P/N TSB P/N Location Reference No. Description (OLD) (NEW) AJ000129 75019535 90.70G11.001 REMOTE CONTROL HAND UNIT, SE-R0319 AJ000220 75019593 91.71X10.E02G PC BOARD ASSY, KEY PAD AJ000219 75019592 91.71X10.E01G PC BOARD ASSY, IR AJ000132 75019514 27.01518.G51 CORD ASSY, POWER AJ000368 75019708 50.71Y15.001 CABLE ASSY, 30P-LVDS-TL-3210 RU AJ000236 75019577 50.71X28.001...

  • Page 62: Packing Diagrams

    6. Packing Diagrams 15DV703R...

  • Page 63: 19Dv703R/19Dv704R

    19DV703R/19DV704R...

  • Page 64: 22Dv703R/22Dv704R

    22DV703R/22DV704R...

  • Page 65: 26Dv703R

    26DV703R...

  • Page 66: 32Dv703R

    32DV703R...

  • Page 67: Block Diagrams

    7. Block Diagrams Main HEAD Phone TUNER RF IN Power AMP SAW Filter Speaker 15" 8 Ohm / 3W X 2 19" 8 Ohm / 3W X 2 22" 8 Ohm / 3W X 2 26" 8 Ohm / 5W X 2 32"...
  • Page 68 DVD Module...
  • Page 69 Wire connection Panel Power Supply Unit To 15 To DVD Key PAD Power CN19 CN13 ( 30pin ) (14pin) (8pin) (3pin) for 26",32" 3W / 8 Ohm for 15",18.5",21.6" CN12( 30pin ) To Speaker CN15 10W / 6 Ohm for 26",32" for 15",18.5",21.6"...
  • Page 70 Power supply TM1/TM2...

  • Page 71: Printed Circuit Board

    8. Printed Circuit Board Top (Trace)
  • Page 72 Top (Component)
  • Page 73 Bottom (Trace)
  • Page 74 Bottom (Component)

  • Page 75: Schematic Diagrams

    9. Schematic Diagrams HDMI SCHEMATIC DIAGRAM...
  • Page 76 TUNER SCHEMATIC DIAGRAM OG-321610G-GP OG-321610G-GP OG-321610G-GP OG-321610G-GP OG-321610G-GP OG-321610G-GP OG-321610G-GP OG-321610G-GP OG-321610G-GP OG-321610G-GP SC820P50V2KX-1GP SC820P50V2KX-1GP...
  • Page 77 ANALOG VIDEO SCHEMATIC DIAGRAM...
  • Page 78 VGA SCHEMATIC DIAGRAM...
  • Page 79 AUDIO ANALOG AMP SCHEMATIC DIAGRAM...
  • Page 80 DC CONVERTER I SCHEMATIC DIAGRAM...
  • Page 81 DC CONVERTER II SCHEMATIC DIAGRAM...
  • Page 82 DDR FLASH SCHEMATIC DIAGRAM...
  • Page 83 IR/KEYPAD/DVD/USB SCHEMATIC DIAGRAM...
  • Page 84 IR BD SCHEMATIC DIAGRAM...
  • Page 85 KEY PAD SCHEMATIC DIAGRAM...
  • Page 86 SCALER SCHEMATIC DIAGRAM...

  • Page 87: Troubleshooting

    10. Troubleshooting No display on screen (screen is black, no power) No power / no video Plug TV power cord Is the TV connected to to an AC outlet. an AC outlet? Does the power turn on (LED green) when the Which one is the keypad or remote problem related to?
  • Page 88 Power check step Power check Does power Check power board have 5Vsb? Have 3.3V? Check IC7 Have 1.2V? Check IC9 Does power have 12V? Have 6V? Check IC5 Have 5V? Check IC2, 4 Have 3.3V? Check IC10 Have 2.6V? Check IC11 (for DDR) Have 1.25V? Check IC21...
  • Page 89 Video problem Video problem Check panel power on LVDS cable: CN12 pin 1, 2,3,4,5 should have 5Vdc (15”/19”/22”), CN13 Pin 27,28,29,30 Is OSD on the should have 12V (26”/32”) screen? Check backlight on/off control: CN1 pin2 should be 2~3.3Vdc Check if signal cable is connected and has signal output.
  • Page 90 Speaker No Sound (Test signal: 0.5Vrms @1KHz sine waveform) Audio problem No Audio issue Increase the volume level by Is the TV volume pressing the VOL + button on the set to “Mute”? remote control or on the TV. Please make sure the signal cable is Note: Speaker will be muted when connected and has output.

  • Page 91: Firmware

    11. Firmware Checking the LCD TV Firmware Version Follow these steps: Turn on the LCD TV. Press and hold the – button on the TV and, at the same time, press and hold 8 button on the remote control. After a least 2 seconds, the TV firmware information is displayed. LCD PWR ON: 0000 MB VERSION:...
  • Page 92 After the firmware update completes, the below window appears. SYSTEM UPDATE Success!! Please press ENTER key to reset TV Press ENTER on the remote control. The below window appears. UPDATE FINISH Success!! Please remove the USB Driver and Press ENTER key for reboot Press ENTER and then remove the USB driver.

This manual is also suitable for:

19dv703r19dv704r22dv703r22dv704r26dv703r32dv703r

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