Toshiba 19DV733G User manual

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
LCD TV/DVD COMBINATION
19DV733G
19DV734G
22DV733G
22DV734G
26DV733G
),/(12*5

GREEN PRODUCT PROCUREMENT
(*1)
The EC is actively promoting the WEEE & RoHS Directives that define standards for
recycling and reuse of Waste Electrical and Electronic Equipment and for the Restriction of
the use of certain 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. In line with this,
Toshiba proactively promotes Green Procurement, and seeks to purchase and use products,
parts and materials that have low environmental impacts.
Green procurement of parts is not only confined to manufacture. The same green parts used
in manufacture must also be used as replacement parts.
LEAD-FREE SOLDER
(*2)
This product is manufactured using lead-free solder as a part of a movement within the
consumer products industry at large to be environmentally responsible. Lead-free solder
must be used in the servicing and repair of this product.
WARNING
This product is manufactured using lead free solder.
DO NOT USE LEAD BASED SOLDER TO REPAIR THIS PRODUCT !
The melting temperature of lead-free solder is higher than that of leaded solder by 86°F to
104°F (30°C to 40°C). Use of a soldering iron designed for lead-based solders to repair
product made with lead-free solder may result in damage to the component and/or PCB
being soldered. Great care should be taken to ensure high-quality soldering when servicing
this product — especially when soldering large components, through-hole pins, and on
PCBs — as the level of heat required to melt lead-free solder is high.

3
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 ..................................................................................................... 10
Hotel Mode Function ................................................................................................. 11
4. System Disassembly ................................................................................................... 14
Disassembly Tools .................................................................................................... 14
Disassembly Reminders ........................................................................................... 14
Disassembly Procedures .......................................................................................... 15
19DV733G / 19DV734G ........................................................................................... 15
22DV733G / 22DV734G ........................................................................................... 20
26DV733G ................................................................................................................ 25
5. Exploded Diagrams ..................................................................................................... 30
19DV733G / 19DV734G ........................................................................................... 30
22DV733G / 22DV734G ........................................................................................... 32
26DV733G ................................................................................................................ 34
6. Packing Diagrams ....................................................................................................... 36
19DV733G / 19DV734G ........................................................................................... 36
22DV733G / 22DV734G ........................................................................................... 37
26DV733G ................................................................................................................ 38
7. Block Diagrams ........................................................................................................... 39
8. Printed Circuit Board .................................................................................................. 41
9. Interconnection Diagrams .......................................................................................... 45
19DV733G / 19DV734G ........................................................................................... 45
22DV733G / 22DV734G ........................................................................................... 46
26DV733G ................................................................................................................ 47
10. Schematic Diagrams ................................................................................................. 48
11. Troubleshooting ........................................................................................................ 66
12. Firmware ..................................................................................................................... 70
Table of Contents

4
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.
Save these instructions for future reference.
• The LCD TV should be installed on a solid horizontal base.
• Do not use the LCD TV near water.
• Avoid exposing the LCD TV to moisture or high humidity.
• Do not install near any heat sources such as radiators, heat registers, stoves or any
other equipment (including amplifiers) that produce heat.
• Avoid exposing the LCD TV to direct sunlight or high temperatures. Hot air may cause
damage to the cabinet and other parts.
• Slots and openings in cabinet and the back or bottom are provided for ventilation.
Adequate ventilation must be maintained to ensure reliable and continued operation and
to protect the display from overheating. Observe the following.
- Do not block ventilation slots and openings with objects or install the display in a place
where ventilation may be hindered.
- The ventilation slots should never be blocked by placing the product on a bed, sofa,
rug, or other similar surface.
- This product should not be placed in built-installation unless proper ventilation is
provided.
• Do not install this display near a motor or transformer where strong magnetism is
generated. Images on the display will become distorted and the colour irregular.
• When cleaning, use only a neutral detergent cleaner with a soft damp cloth. Do not spray
with liquid aerosol cleaners.
• Refer all servicing to qualified service personnel. Do not attempt repairs yourself. Your
warranty does not cover repairs or attempted repairs by anyone not authorised by the
manufacturer.
CAUTION
THIS LCD COLOUR TELEVISION EMPLOYS A LASER SYSTEM.
TO ENSURE PROPER USE OF THIS PRODUCT, PLEASE READ THIS SERVICE
MANUAL CAREFULLY AND RETAIN FOR FUTURE REFERENCE. SHOULD THE UNIT
REQUIRE MAINTENANCE, CONTACT AN AUTHORISED SERVICE LOCATION-SEE
SERVICE PROCEDURE.
USE OF CONTROLS, ADJUSTMENTS OR THE PERFORMANCE OF PROCEDURES
OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION
EXPOSURE.
TO PREVENT DIRECT EXPOSURE TO LASER BEAM, DO NOT TRY TO OPEN THE
ENCLOSURE.
VISIBLE LASER RADIATION MAY BE PRESENT WHEN THE ENCLOSURE IS OPENED.
DO NOT STARE INTO BEAM.

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 5
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.
• Place the unit on a workstation equipped to protect against static electricity, such as
conductive mat.
• Soldering iron with ground wire or ceramic type is used.
• A worker needs to use a ground conductive wrist strap for body.
Servicing Environment
1. This LCD TV should be used only with the power source type identified on the package
and on the user’s guide.
2. Service the LCD TV in a room with low humidity and free of dust.
3. Place the LCD TV on a stable, level surface. Subjecting the LCD TV to a drop or sharp
impact may cause severe damage to thin glass, plastic surface materials, and internal
components.
4. If necessary, clean the LCD TV with a slightly damp cloth using clean water. Disconnect
the LCD TV from the power source before cleaning. Do not use ammonia-based
cleaning products.
5. In the event that the powered LCD TV rapidly heats, or emits unusual smells or noises,
immediately disconnect the unit from the power source.
6. To avoid electrical hazard, make sure that the LCD TV is fully assembled—the casing
closed and all the screws tightened completely—before plugging it in for testing.
7. The LCD TV’s internal components may be damaged by electrostatic discharge (ESD).
Carry out repairs in an ESD-protected workshop. If no such workshop is available,
wear an antistatic wrist strap or touch a highly conductive metal object.
8. Before opening the housing, disconnect the LCD TV from all power sources and
remove all peripheral cables. If the LCD TV has not been disconnected from the power
outlet before being opened, there is a danger to life through electric shock. There is
also a risk of damage to the components.

6
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’
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
Antenna input VHF/UHF 75 ohm, IEC-type
DVD/CD Player
Signal system NTSC, PAL (Region 2)
Supported disc size 12 cm, 8 cm
Pickup mechanism 1-lens, 2-beams
Audio/Video Input/Output Signals
Component video input (Y) 1.0 V (p-p), 75 ohm, RCA jack x 1
(Pb, Pr) 0.7 V (p-p), 75 ohm, RCA jack x 2
Video input (composite) (Y) 1.0 V (p-p), 75 ohm, RCA jack x 1
Audio input -8 dBm, 50 kohm, RCA jack (L/R) x 2
Optical digital audio output Optical type
Headphone 3.5-mm stereo mini jack x 1
HDMI input Type A, HDCP-compliant, E-EDID compliant
Suggested scan rates: PAL 576i, 576p, 720p, 1080i, 1080p
NTSC 480i, 480p, 720p, 1080i, 1080p
PC audio: 2-channel LPCM, 32/44.1/48 kHz sampling frequency,
16/20/24 bits per sample
Video input (SCART) 1 (RGB)
SCART terminal One 21-pin SCART connector
Include audio/video input, RGB input, and TV audio/video output
Video input/output: 1.0 V (p-p), 75 ohm
RGB input: 0.7 V (p-p), 75 ohm
Audio input: 50kohm, 500m Vrms
Audio output: 1kohm, 500m Vrms
PC input Monitor: 15-pin mini-D sub x 1; audio: 3.5-mm stereo mini jack x 1
Speaker Output 70x20x26 mm, 8 ohm x 2
Power Voltage AC 110-240 V, 50/60 Hz
Power Consumption (DC)
Operation Approx. 44 W at 230 V, 50 Hz
Standby Approx. 0.5 W at 230 V, 50 Hz
Operating Conditions
Temperature 0 °C - 35 °C (32 °F - 95 °F)
Relative humidity Less than 80% RH (no condensation)
Dimensions (W x D x H)
Width 18.9 in. (480.9 mm)
Height 14.4 in. (365.8 mm)
Depth 8.5 in (215.0 mm)
Weight 5.1 kg

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 7
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
Antenna input VHF/UHF 75 ohm, IEC-type
DVD/CD Player
Signal system NTSC, PAL (Region 2)
Supported disc size 12 cm, 8 cm
Pickup mechanism 1-lens, 2-beams
Audio/Video Input/Output Signals
Component video input (Y) 1.0 V (p-p), 75 ohm, RCA jack x 1
(Pb, Pr) 0.7 V (p-p), 75 ohm, RCA jack x 2
Video input (composite) (Y) 1.0 V (p-p), 75 ohm, RCA jack x 1
Audio input -8 dBm, 50 kohm, RCA jack (L/R) x 2
Optical digital audio output Optical type
Headphone 3.5-mm stereo mini jack x 1
HDMI input Type A, HDCP-compliant, E-EDID compliant
Suggested scan rates: PAL 576i, 576p, 720p, 1080i, 1080p
NTSC 480i, 480p, 720p, 1080i, 1080p
PC audio: 2-channel LPCM, 32/44.1/48 kHz sampling frequency,
16/20/24 bits per sample
Video input (SCART) 1 (RGB)
SCART terminal One 21-pin SCART connector
Include audio/video input, RGB input, and TV audio/video output
Video input/output: 1.0 V (p-p), 75 ohm
RGB input: 0.7 V (p-p), 75 ohm
Audio input: 50kohm, 500m Vrms
Audio output: 1kohm, 500m Vrms
PC input Monitor: 15-pin mini-D sub x 1; audio: 3.5-mm stereo mini jack x 1
Speaker Output 70x20x26 mm, 8 ohm x 2
Power Voltage AC 110-240 V, 50/60 Hz
Power Consumption (DC)
Operation Approx. 58 W at 230 V, 50 Hz
Standby Approx. 0.5 W at 230 V, 50 Hz
Operating Conditions
Temperature 0 °C - 35 °C (32 °F - 95 °F)
Relative humidity Less than 80% RH (no condensation)
Dimensions (W x D x H)
Width 21.7 in. (552.3 mm)
Height 15.9 in. (404.5 mm)
Depth 8.5 in (215.0 mm)
Weight 5.7 kg

8
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
DVD/CD Player
Signal system NTSC, PAL (Region 2)
Supported disc size 12 cm, 8 cm
Pickup mechanism 1-lens, 2-beams
Audio/Video Input/Output Signals
Component video input (Y) 1.0 V (p-p), 75 ohm, RCA jack x 1
(Pb, Pr) 0.7 V (p-p), 75 ohm, RCA jack x 2
Video input (composite) (Y) 1.0 V (p-p), 75 ohm, RCA jack x 1
Audio input -8 dBm, 50 kohm, RCA jack (L/R) x 2
Optical digital audio output Optical type
Headphone 3.5-mm stereo mini jack x 1
HDMI input Type A, HDCP-compliant, E-EDID compliant
Suggested scan rates: PAL 576i, 576p, 720p, 1080i, 1080p
NTSC 480i, 480p, 720p, 1080i, 1080p
PC audio: 2-channel LPCM, 32/44.1/48 kHz sampling frequency,
16/20/24 bits per sample
Video input (SCART) 1 (RGB)
SCART terminal One 21-pin SCART connector
Include audio/video input, RGB input, and TV audio/video output
Video input/output: 1.0 V (p-p), 75 ohm
RGB input: 0.7 V (p-p), 75 ohm
Audio input: 50kohm, 500m Vrms
Audio output: 1kohm, 500m Vrms
PC input Monitor: 15-pin mini-D sub x 1; audio: 3.5-mm stereo mini jack x 1
Speaker Output 167x45x37 mm, 6 ohm x 2
Power Voltage AC 110-240 V, 50/60 Hz
Power Consumption (DC)
Operation Approx. 79 W at 230 V, 50 Hz
Standby Approx. 0.5 W at 230 V, 50 Hz
Operating Conditions
Temperature 0 °C - 35 °C (32 °F - 95 °F)
Relative humidity Less than 80% RH (no condensation)
Dimensions (W x D x H)
Width 26.2 in. (666.0 mm)
Height 19.3 in. (490.0 mm)
Depth 10.2 in (260.0 mm)
Weight 8.5 kg

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 9
3. Function Testing
Remote Control Key Codes
Notes:
1. NEC format
2. Custom Code: 40-BF, 44-BB, 45-BA,
45-BC
No. Key Name Custom Code Key Code
1EJECT 45-BA F5
2 TV/DVD 45-BC B3
3 ATV/DVD 40-BF 44
4 POWER 40-BF 12
No. Key Name Custom Code Key Code
51 40-BF 01
62 40-BF 02
73 40-BF 03
84 40-BF 04
95 40-BF 05
10 6 40-BF 06
11 7 40-BF 07
12 8 40-BF 08
13 9 40-BF 09
14 DISPLAY 40-BF 1C
15 0 40-BF 00
16 MUTE 40-BF 10
17 TV/RADIO 40-BF 47
18 CH UP 40-BF 3E
19 VOL+ 40-BF 1A
20 DVD MENU 40-BF 19
21 INPUT 40-BF 0F
22 CH DOWN 40-BF 3F
23 VOL- 40-BF 1E
24 TOP MENU 44-BB DF
25 DIGITAL MENU 40-BF 0A
26 GUIDE 40-BF 45
27 S44-BB 80
28 W44-BB 51
29 ENTER/CH LIST 40-BF 3D
30 X44-BB 4D
31 T44-BB 81
32 MENU SETUP 40-BF 0E
33 EXIT/CANCEL 44-BB EF
34 RETURN 44-BB 5D
35 PLAY X44-BB 15
36 STOP 44-BB 14
37 SKIP / 45-BA 23
38 REV / 45-BA 19
39 FF / 45-BA 13
40 SKIP / 45-BA 24
41 SLOW 45-BA 0E
42 PAUSE 45-BA 15
43 PLAY MODE 45-BA E0
44 SLOW 45-BA 0D
45 MARKER 45-BA EC
46 ANGEL 44-BB 96
47 REPEAT A-B 44-BB 5C
48 TELETEXT 45-BA 79
49 SUBTITLE 44-BB 87
50 AUDIO SELECT 44-BB 53
51 CH RTN ZOOM 45-BA 40
52 JUMP 44-BB 9B
53 PIC SIZE 40-BF 59
54 SLEEP 40-BF 15

10
Service Mode List
*1 Boot sector consists of boot loader, MCU code, EDID and USB update minikernel.
Item TV Mode TV Key Remote Key Time Operations
1 TV VOL- 1 2 sec. Reset the TV to factory
default, except factory data.
2DVD
(no disc)
VOL- 4 2 sec. Reset the DVD to factory
default.
3 All VOL- 8 2 sec. Display the POWER ON
total hours, Main board
version, checksum and
version of boot sector*1 and
system firmware.
4 All VOL- 9 2 sec. Display the “Adjustment
MENU”.
5DVD
(no disc)
STOP 1 2 sec. Check the DVD module
firmware version.
6DVD
(no disc)
STOP 7 2 sec. Release the PARENTAL
LOCK.
7DVD
(STOP)
Remote key:
SETUPSUBTITLE3
AUDIO SELECT0
0 sec. TRAY LOCK. The disc
cannot be taken out.
8 All VOL- 7 2 sec. Display front end status
and digital diagnostic.
9 All Remote key:
STOPШENTER
Ш1Ш8Ш3
X 0 sec. Select a specific model/
panel through OSD menu.
10 TV VOL- 2 2 sec. Reset both TV and DVD
module to factory default.
11 All VOL- 3 2 sec. Enter Hotel Mode

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 11
Hotel Mode Function
To set the Hotel Mode, please follow the steps below:
1. In power on mode, set the VOLUME to minimum.
2. Press and hold the – button on the TV.
3. Simultaneously press and hold the 3 button on the remote control for more than 2 seconds.
The Hotel Mode setting menu will appear.
4. Use the S/Tbutton on the remote control to select your desired item, and then press
ENTER.
5. Use the
W
/
X
button to set the item to your desired setting.
6. The Hotel Mode has now been set up.
Note: If any item of Hotel Mode is set or enabled, Reset in Setup Menu will be disabled.
To reset the Hotel Mode, please follow the steps below:
1. In power on mode, set the VOLUME to minimum.
2. Press and hold the – button on the side panel.
3. Simultaneously press and hold the 3 button on the remote control for more than 2 seconds.
The Hotel Mode setting menu will appear.
4. Use the S/Tbutton on the remote control to select Reset, and then press ENTER.
The setting items have now been set to their initial value.
Hotel Mode
▲▼ : Select ◄► : Adjust
Maximum Volume 50
Panel Button Respond
Menu Button Respond
Input Mode Start Off
Fixed Volume Off
Fixed Picture Mode Off
Hotel Clone USB to TV
Reset >>
26" CMO EH2V1.02.052
Teltext Button Respond

12
*1 Even if the item is set to “No Respond”, the key operation of service mode function is effective.
*2 Even if the three items are set to “Off”, the TV starts up in the same settings when you turned off
the power last time.
*3 (i) Press “OK” on the option item “TV to USB” to start copying. Once it is completed, the value
will switch back to “Off”.
(ii) Press “OK” on the option item “USB to TV” to start copying. Once it is completed, the value
will switch back to “Off” and the TV will reboot automatically.
(iii) “All the settings” means “Hotel Menu settings” and “user menu settings” (Picture/Sound/
Channel/Setup), including “ATV/DTV channel list”.
(iv) Hotel Clone cannot be enabled in the following situations:
- Hotel Clone does not include the factory settings of Backup Zone, such as ADC, WB,
Panel ID, SN data, etc.
- The default value of the option items of Picture Setting and Picture Preference (with the
exception of “Memory”) will remain unchanged even after Hotel Clone.
- Hotel Clone cannot be enabled between different models and different Panel IDs.
- Hotel Clone cannot be enabled between different firmware versions. If this happens, a
warning message will appear as below, and the value will switch back to “Off” without any
clone action.
Setting item Setting value Initial value Function
Maximum Volume 0-50 50 To set the maximum volume value.
Panel Button Respond/
No Respond
Respond To enable/disable the operation of the buttons on
the TV panel.*1
Menu Button Respond/
No Respond
Respond To enable/disable the operation of the MENU
button on the TV panel and remote control.*1
Teletext Button Respond/
No Respond
Respond To enable/disable the operation of the TELETEXT
button*1.
Input Mode Start 1-99ch/DTV*5/
AV1/AV2/
Component/
HDMI1/HDMI2/
PC/DVD/OFF
Off To set the input source when the TV is turned
on*2.
Fixed Volume Off/0-50*4Off To set the volume value when the TV is turned
on*2.
Fixed Picture Mode Off/Sports/
Standard/
Movie/Memory
Off To set the picture mode when the TV is turned
on*2.
Hotel Clone Off/TV to USB/
USB to TV
Off To copy all the settings from USB to TV or from TV
to USB*3.
Reset N/A N/A Reset the hotel mode setting to default.
Hotel Mode
▲▼ : Select ◄► : Adjust
Maximum Volume 50
Panel Button Respond
Menu Button Respond
Input Mode Start Off
Fixed Volume Off
Fixed Picture Mode Off
Hotel Clone USB to TV
Reset
32" CMO EH2V1.02.052
Teltext Button Respond
Can not do hotel clone between different version

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 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:
(i) The default channel number is 0001.
(ii) Users can input channel numbers by pressing the buttons on the remote control.
(iii) Channels in DTV mode are located from 0001 to 9999.
(iv) - If channel table is empty when Input Mode Start is selected, set the input source to DTV
mode.
- If channel table is not empy when Input Mode Start is selected, check if the channel you
would like to tune to exists. If it does in TV channel table or Radio channel table, select
this channel the next time you turn on the TV. If it does not exists in either of tem, the TV
will stay tuned to the channel the last time you turned off the power.

14
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.
• Follow the sequence indicated in the illustrative figures when removing the screws
securing the components.
• The screws for different components vary in size. During the disassembly process, group
the screws with their corresponding components to avoid mismatches when putting back
the components.
• After removing the adhesive tapes, paste them back near their original location for use
during system reassembly.
• Prior to disassembly, place the LCD TV on a stable, level surface protected by a cushion.

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 15
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.
3. Remove the nine screws securing the rear panel cover.
4. Open and remove the left rear panel door.

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.

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 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.
11. Detach the right and left speakers, and then disconnect the speaker cables.

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. Remove the four screws securing the DVD module.

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 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.

20
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. Disconnect the inverter cables from the power board.