Toshiba 40LV933G User manual

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SERVICE MANUAL
LCD Color Television
40LV933G
Ver. 1.00
Upd ting history
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Please check back at a later time for any future
updates.
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COPYRIGHT © 1995 - 2011 TOSHIBA CORPORATION, ALL Rights Reserve .
This TOSHIBA ZEUS formatted service manual provides a variety of information concerning
products information service technical service and the like ("Documents"). TOSHIBA and/or its
affiliated companies own copyrights in these Documents unless otherwise expressly stated.
These Documents are protected by copyright law and other applicable laws. Unauthorized use is
strictly prohibited and you may use the TOSHIBA ZEUS formatted service manual only under the
following conditions:
You may use copy or download for only internal and non-commercial purposes.
When you copy or download you must include this copyright notice and conditions.
You are prohibited to exploit such as modify distribute publicly transmit (including making
transmittable) or display and so on any copies of Documents.
Nothing shall be construed to license any copyright patent trademark or other intellectual
property rights existing in the Documents.
THE DOCUMENTS ARE PROVIDED ON AN "AS IS" BASIS WITHOUT WARRANTY OF ANY
KIND EITHER EXPRESS AND IMPLIED INCLUDING BUT NOT LIMITED TO WARRANTIES
OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR NON-
INFRINGEMENT.
In addition utilization of some Documents may be subject to further copyright notices and
conditions indicated on such Documents.
COPYRIGHT
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Whenever replacing the Main PCB with new one, perform this procedure.
1. IR Ke MENU → APPLICATIONS → Sleep Timer → OK.
2. When displa _ _ : _ 0 input 4 numbers 2766.
The Factor menu will displa .
3. Move to Tag "3" b Right/Left Arrow ke on the Remote.
4. Select "Model T pe" cell.
DESTINATION SETTING CHANGE
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5. Select the appropriate model t pe b Right/Left Arrow ke on the Remote. Model t pe is
written on the rating label.
6. Select "Reset to Def".
7. Select "Yes" and press "OK" button on the Remote.
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Firmware Upgrade - USB
USB upgrade flow
1. Firmware upgrade.
Copy a Firmware BIN file to USB disk (root dire tory) with FAT 32.
For example the naming as below.
xx_xV_xL_DB_933x_022_REV00.bin, shall have differen e version of firmware number
show on red.
2. Plug USB disk into TV USB port.
3. IR key MENU → SETUP → Software Upgrade → USB Upgrade.
During F/W upgrade will display per ent on the s reen when is finished will shown a
message on LCD s reen then unplug USB disk. TV will auto reset and power on again.
Note:
Not allow opy more then 1 versions of firmware in USB disk.
FIRMWARE UPDATING PROCEDURE
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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 Ha ardous Substances. From July 1, 2006, the RoHS Directive will prohibit any
marketing of new products containing the restricted substances.
Increasing attention is given to issues related to the global environmental. Toshiba Corporation
recogni es 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.
Green procurement of parts is not only confined to manufacture. The same green parts used in
manufacture must also be used as replacement parts.
GREEN PRODUCT PROCUREMENT
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Handling the LCD Module
Safety Precaution
In the event that the screen is damaged or the liquid crystal (fluid) leaks, do not breathe in or
drink this fluid.
Also, never touch this fluid. Such actions could cause to icity or skin irritation. If this fluid should
enter the mouth, rinse the mouth thoroughly with water. If the fluid should contact the skin or
clothing, wipe off with alcohol, etc., and rinse thoroughly with water. If the fluid should enter the
eyes, immediately rinse the eyes thoroughly with running water.
Precautions for Handling the LCD Module
CAUTION: The etal edges of the LCD odule are sharp, handle it with care.
The LCD module can easily be damaged during disassembly or reassembly; therefore, always
observe the following precautions when handling the module.
1. When attaching the LCD module to the LCD cover, position it appropriately and fasten at
the position where the display can be viewed most conveniently.
2. Carefully align the holes at all four corners of the LCD module with the corresponding holes
in the LCD cover and fasten with screws. Do not strongly push on the module because any
impact can adversely affect the performance. Also use caution when handling the polarized
screen because it can easily be damaged.
3. If the panel surface becomes soiled, wipe with cotton or a soft cloth. If this does not remove
the soiling, breathe on the surface and then wipe again.
SAFETY INSTRUCTION
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If the panel surface is e tremely solied, use a CRT cleaner as a cleaner. Wipe off the panel
surface by drop the cleaner on the cloth. Do not drop the cleaner on the panel. Pay
attention not to scratch the panel surface.
4. Leaving water or other fluids on the panel screen for an e tended period of time can result
in discoloration or stripes. Immediately remove any type of fluid from the screen.
5. Glass is used in the panel, so do not drop or strike with hard objects. Such actions can
damage the panel.
6. CMOS-LSI circuitry is used in the LCD module, so avoid damage due to static electricity.
When handling the module, use a wrist ground or anchor ground.
7. Do not e pose the LCD module to direct sunlight or strong ultraviolet rays for an e tended
period of time.
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8. Do not store the LCD module below the temperature conditions 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.
9. Do not disassemble the LCD module. Such actions could result in improper operation.
10. When transporting the LCD module, do not use packing containing epo y resin (amine) or
silicon resin (alcohol or o im). The gas generated by these materials can cause loss of
polarity.
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P201 P202 CN1 CN12
1 24V 1 12V 1 +12V_NORMAL 1 PANEL_VCC 2 24V 2 12V 2 +12V_NORMAL 2 PANEL_VCC 3 24V 3 12V 3 +12V_NORMAL 3 PANEL_VCC 4 24V 4 GND 4 GND 4 PANEL_VCC
5 24V 5 GND 5 GND 5 OD_OCP_SEL
6 GND 6 GND 6 GND 6 PANEL_VCC 7 GND 7 5VSB 7 +5V_Standby 7 RXE4+ 8 GND 8 5VSB 8 +5V_Standby 8 GND 9 GND 9 5VSB 9 +5V_Standby 9 RXE3+
10 GND 10 ACD 10 ACDetect 10 RXE4-
11 BRIGHT_ADJ 11 BD_PS_ON 11 GND 11 RXEC+ 12 INV_ON_OFF 12 BRIGHT_ADJ 12 OCP_OUTPUT_PWM 12 RXE3-
13 INV_ON_OFF 13 INVERTER_ON_OFF 13 GND 14 PS_ON 14 STANDBY 14 RXEC-
15 RXE2+ 16 GND 17 RXE1+ 18 REX2- 19 REX0+ 20 REX1- 21 GND 22 REX0- 23 RXO4+ 24 GND 25 RXO3+ 26 RXO4- 27 RXOC+ 28 RXO3- 29 GND 30 RXOC- 31 RXO2+ 32 GND 33 RXO1+ 34 RXO2- 35 RXO0+ 36 RXO1- 37 GND 38 RXO0- 39 BRIGHT_ADJ 40 OCP_OUTPUT_PWM
CN2
1 GND 2 LED_TIMER 3 LED_ON_OFF 4 LED_ON_OFF CN11 5 IRIN 1 SPK_R- 6 +5V_Standby 2 SPK_R+
3 SPK_L- 4 SPK_L+
CN202
1 +5V_STBY 2 IRIN 3 GND 4 LED_ON_OFF 5 LED_ON_OFF 6 LED_TIMER
IR_LED BORAD
Speaker
MAIN BOARD
PSU Unit
PANEL (T-CON)
PANEL INVERTER
Speaker

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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 US L AD BAS D SOLD R TO R PAIR THIS PRODUCT!
The melting temperature of lead-free solder is higher than that of leaded solder by 86ºF to 04ºF
(30ºC to 40ºC). 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 made 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.
L AD-FR SOLD R
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Precaution
WARNING: BEFORE SERVICING THIS CHASSIS, READ THE "SAFETY PRECA TION"
AND "PROD CT SAFETY NOTICE".
CA TION: The international hazard symbols " " in the schematic diagram and the
parts list designate components which have special characteristics important for safety
and should be replaced only with types identical to those in the original circuit or
specified in the parts list.
The mounting position of replacements is to be identical with originals.
Before replacing any of these components, read carefully the "SAFETY PRECA TION"
AND "PROD CT SAFETY NOTICE".
Do not degrade the safety of the receiver through improper servicing.
Note:

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.
Abbreviations
All CD and P capacitors are ±5 %, 50 V and all resistor, ±5 %, 1/6 W unless otherwise noted.
PARTS LIST
Capacitors CD : Ceramic Disk
Resistors C : Carbon film
OM : Oxide Metal ilm
P : Plastic ilm
CC : Carbon Composition
VR : Variable Resistor
EL : Electrolytic
M : Metal ilm
R : usible Resistor
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Service Mode
Panel ID in Global Serial No.
YWK
Model/Panel Information
ADJUSTM NT
Total digits
Max 14
YWK
YWK
3 digits
Model_ID
xxx
3 digits
S RIAL
******
6 digits
(M00001~M99999)
Panel
**
2digits
Y : Year 8 2008
9 2009
A 2010
B 2011
C 2012
· ·
· ·
·
·
WK : Week 01 WK01
02 WK02
03 WK03
04 WK04
· ·
· ·
·
·
53 WK53
Model Model ID Panel ID Panel
19EL933 B K86 L1 LC185EXE-TEA1
19EL934 B K87 L1 LC185EXE-TEA1
23EL933 K
L22
K1
LTM230HT10
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23EL933 K
L22
K1
LTM230HT10
23EL934 K L23 K1 LTM230HT10
26EL933B K90 L1 LC260EXN-SDA3
26EL933G K91 L1 LC260EXN-SDA3
26EL933 B K93 L1 LC260EXN-SDA3
26EL934G K94 L1 LC260EXN-SDA3
32EL933B L27 L1 LC320EXN-SEA1
32EL933G K96 L1 LC320EXN-SEA1
32EL933N K98 L1 LC320EXN-SEA1
32EL933 B K99 L1 LC320EXN-SEA1
32EL934G L01 L1 LC320EXN-SEA1
32EL934 B L02 L1 LC320EXN-SEA1
32HL933B L17 K1 LTA320HN03
32HL933G L16 K1 LTA320HN03
32HL933N L30 K1 LTA320HN03
32HL933 K L18 K1 LTA320HN03
40HL933B L20 K1 LTA400HM22
40HL933G L19 K1 LTA400HM22
40HL933N L31 K1 LTA400HM22
40HL933 K L21 K1 LTA400HM22
Model Model ID Panel ID Panel
32AV933G L03 L1 LC320WXN-SCC1
32AV933N L28 L1 LC320WXN-SCC1
32AV933 B L05 L1 LC320WXN-SCC1
32AV934G L06 L1 LC320WXN-SCC1
32AV934 B L07 L1 LC320WXN-SCC1
32LV933G L08 A1 T315HW04 V4( EV.6)
32LV933N L10 A1 T315HW04 V4( EV.6)
32LV933 B L11 A1 T315HW04 V4( EV.6)
40LV933G L12 K1 LTA400HM01
40LV933N L29
K1 LTA400HM01
C1 V400HJ2-L01
40LV933 B L14 K1 LTA400HM01
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Panel vendor
Marking Panel Vendor Marking Panel Vendor Marking Panel Vendor
AAUO J S SHA P
B K SAMSUNG T
CCMO LLPL/LGD U
D M V
E N W
F P CPT X
G Q Y
HIPS Z
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PARTS LIST
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Location Parts No. Description
E200 75029559 PC BOARD ASSY, MAIN, 40 V933, 9C-EB40M00V0
E250 75029560 PC BOARD ASSY, POWER, 40 V933, 0433-006W000
E270 75030142 IR BOARD ASSY, 90-EB40S02X0
E300 75026470 CD PANE , TA400HM01
E310 75029563 VDS CAB E, 51P-40P 500MM, 40V 933, 1414-071Q000
E320 75029593 POWER CORD, 40 V933, 1411-019Y000
E330 75029565 SPEAKER, 40 V933, 04A4-012X000
E340 75029567 CAB E, SPEAKER, 40 V933, 1419-003N000
E342 75029569 CAB E, INVERTER, 14P-12P 410MM, 40 V933, 1410-009K000
E344 75029571 CAB E, M/B TO P/B, 14P-14P 360MM, 40 V933, 1414-072E000
E346 75029573 CAB E, M/B TO I/R, 6P-6P 275MM, 40 V933, 1414-078 000
E400 75014827 REMOCON HAND UNIT, CT-90326
E410 75029596 OWNERS MANUA , G, 40 V933, 1506-0K6C000
E412 75029597 EASY SET UP GUIDE, 40 V933, 1506-0K6H000
E100 75029583 FRONT BEZE ASSY, 40 V933G, 13EB-3CB0111
E110 75029585 BACK COVER ASSY, 40 V933G, 13EB-3CB0301
E120 75029557 STAND ASSY, 40 V933, 9C-EB40S01G0
E125 75029558 SCREW, FOR STAND, 4MX12MM, 40 V933, 13EB-3DB0801
E500 75029575 CARTON BOX, 40 V933, 1503-042R000
E510 75029577 PACKING, TOP- EFT, 40V 933, 1505-02Q1000
E511 75029578 PACKING, TOP-RIGHT, 40 V933, 1505-02PQ000
E512 75029579 PACKING, BOTTOM- EFT, 40 V933, 1505-02Q2000
E513 75029580 PACKING, BOTTOM-RIGHT, 40 V933, 1505-02PS000
E520 75024573 EPE BAG, 40A2S, 1516-0106000
E530 75029581 BAG, FOR STAND, 40 V933, 1516-01MD000
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WARNING: BEFORE SERVICING THIS CHASSIS, READ THE "SAFETY PRECAUTION"
AND "PRODUCT SAFETY NOTICE" INSTRUCTIONS BELOW.
Safety Pre aution
WARNING: SERVICING SHOULD NOT BE ATTEMPTED BY ANYONE UNFAMILIAR WITH
THE NECESSARY PRECAUTIONS ON THIS RECEIVER. THE FOLLOWING ARE THE
NECESSARY PRECAUTIONS TO BE OBSERVED BEFORE SERVICING THIS CHASSIS.
1. An isolation transformer should be connected in the power line between the receiver and
the AC line before any service is performed on the receiver.
2. Always disconnect the power plug before any disassembling of the product. It may result in
electrical shock.
3. hen replacing a chassis in the cabinet, always be certain that all the protective devices
are put back in place, such as nonmetallic control knobs, insulating covers, shields,
isolation resistor-capacitor network, etc.
4. Always keep tools, components of the product, etc away from the children, These items
may cause injury to children.
5. Depending on the model, use an isolation transformer or wear suitable gloves when
servicing with the power on, and disconnect the power plug to avoid electrical shock when
replacing parts. In some cases, alternating current is also impressed in the chassis, so
electrical shock is possible if the chassis is contacted with the power on.
6. Always use the replacement parts specified for the particular model when making repairs.
The parts used in products require special safety characteristics such as inflammability,
voltage resistance, etc. therefore, use only replacement parts that have these same
characteristics. Use only the specified parts when the mark is indicated in the circuit
diagram or parts list.
7. Parts mounting and routing dressing of wirings should be the same as that used originally.
For safety purposes, insulating materials such as isolation tube or tape are sometimes
used and printed circuit boards are sometimes mounted floating. Also make sure that
wirings is routed and clamped to avoid parts that generate heat and which use high
voltage. Always follow the manufactured wiring routes / dressings.
8. Always ensure that all internal wirings are in accordance before re-assembling the external
casing after a repairing completed. Do not allow internal wiring to be pinched by cabinets,
panels, etc. Any error in reassembly or wiring can result in electrical leakage, flame, etc.,
SAFETY INSTRUCTION
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and may be hazardous.
9. NEVER remodel the product in any way. Remodeling can result in improper operation,
malfunction, or electrical leakage and flame, which may be hazardous.
10. Touch current check. (After completing the work, measure touch current to prevent an
electric shock.)

Plug the AC cord directly into the AC outlet. Do NOT use an isolation transformer for
this check.

Connect a measuring network for touch currents between each exposed metallic part on
the set and a good earth ground such as a water pipe.

The potential at any point (TOUCH CURRENT) expressed as voltage and does
not exceed the following value:
Annex D
(normative)
Measuring network for TOUCH CURRENTS
Resistance values in orms (Ω).
Input resistance : 1 MΩ
Input capacitance : 200 pF
Frequency range : 15 Hz to 1 MHz and d.c. respectively
Note: Appropriate measures should be taken to obtain the correct value in case of
non sinusoidal waveforms.
The measuring instrument is calibrated by comparing the frequency factor of with
the solid line in figure F.2 of IEC 60990 at various frequencies. A calibration curve is
constructed showing the deviation of from the ideal curve as a function of
frequency.
TOUCH CURRENT = / 500 (peak value).
V: Voltmeter or oscilloscope
(r.m.s. or peak reading)
The part or contact of a TERMINAL is not HAZARDOUS LIVE if:
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