Toshiba 46RV530U Schematic

SERVICE MANUAL

LCD Color Television

46RV530U Rev.1

For Technical Bulletins, Technical Tips, or other information regarding the
service of this model, visit the Toshiba America Consumer Products National
Service Division website at:

www7.toshiba.com

This model is classified as a green product (*1), as indicated by the underlined serial number.

This Service Manual describes replacement parts for the green product. When repairing this

green product, use the part(s) described in this manual and lead-free solder (*2).

For (*1) and (*2), refer to GREEN PRODUCT PROCUREMENT and LEAD-FREE

SOLDER.

© TOSHIBA CORPORATION 2008

IMPORTANT NOTICE

1

WARNING: Do not modify or alter the information or data provided herein without prior written consent by Toshiba.

Toshiba shall not be liable to anybody for any damages, losses, expenses or costs, if any, incurred in connection with or
as a result of such modification or alteration.

THE INFORMATION OR DATA HEREIN SHALL BE PROVIDED "AS IS" WITHOUT ANY WARRANTY OF ANY KIND, EITHER
EXPRESS OR IMPLIED WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

Toshiba shall not be liable for any damages, losses, expenses or costs, if any, incurred in connection with or as a result of
use of any information or data provided herein.

GREEN PRODUCT PROCUREMENT

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 the restricted substances.

Increasing attention is given to issues related to the global environmental. 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.

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

WARNING: 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.

The melting temperature of lead-free solder is higher than that of leaded solder by 86ºF to 104ºF (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.

SAFETY INSTRUCTION

WARNING: Before servicing this chassis, read the "Safety Precaution" and "Product Safety Notice" instructions below.

Safety Precaution

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. When 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, product components, etc. away from children as these items may cause injury.

5. Depending on the model, use an isolation transformer or wear suitable gloves when servicing with the power on.
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

2

parts list.

7. Part mounting and wire routing should be the same as that used originally. For safety purposes, insulating materials such as
isolation tubes or tape are sometimes used and printed circuit boards are sometimes mounted floating. Also make sure that
wiring is routed and clamped to avoid parts that generate heat or use high voltage. Always follow the manufactures wiring
routes / dressings.

8. Always ensure that all internal wirings are in accordance before re-assembling the external casing after a repair is
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., and may be hazardous.

9. NEVER remodel the product in any way. Remodeling can result in improper operation, malfunction, electrical leakage, or
flame, which may be hazardous.

10. Always perform an AC leakage current check on the exposed metallic parts of the cabinet such as antennas, terminals,
screw heads, metal overlays, control shafts, etc. to be sure that the set is safe to operate without any danger of electrical
shock before returning the set to the customer.

11. To check leakage current: (After completing the work, measure the leakage current to prevent an electrical shock.)

x Plug the AC line cord directly into a 120V AC outlet. Do not use an isolation transformer for this check.

x Use an AC voltmeter having 5000 ohms per volt or more sensitivity in the following manner.

Connect a 1500 ohm 10 watt resistor, paralleled by a 0.15 µF, AC type capacitor, between a known good earth ground (water pipe,
conduit, etc.) and the exposed metallic parts, one at a time. Measure the AC voltage across the combination of 1500 ohm resistor
and 0.15 µF capacitor. Reverse the AC plug at the AC outlet and repeat AC voltage measurements for each exposed metallic part.
Voltage measured must not exceed 0.3 volts rms. This corresponds to 0.2 milliamps AC. Any value exceeding this limit constitutes a
potential shock hazard and must be corrected immediately.

Product Safety Notice

Many electrical and mechanical parts in this chassis have special safety-related characteristics. These characteristics are often
overlooked in a visual inspection. The protection afforded by them cannot necessarily be obtained by using replacement
components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified
in this manual and its supplements. Electrical components having such features are identified by the international hazard symbols
on the schematic diagram and the parts list. Before replacing any of these components, read the parts list in this manual carefully.
The use of substitute replacement parts which do not have the same safety as specified in the parts list may create electrical shock,
fire, or other hazards.

SAFETY INSTRUCTION

WARNING: The metal edges of the LCD module 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. In the event that the screen is damaged or the liquid crystal (fluid) leaks, do not breathe in, drink, or touch this fluid. Such
actions could cause toxicity 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

3

the eyes, immediately rinse the eyes thoroughly with running water.

2. 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.

3. 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.

4. 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. If the panel surface is extremely soiled, wipe the panel surface with CRT cleaner sprayed
onto the cloth. Do not spray the cleaner on the panel. Pay attention not to scratch the panel surface.

5. Leaving water or other fluids on the panel for an extended period of time can result in discoloration or stripes. Immediately
remove any type of fluid from the screen.

6. Glass is used in the panel construction. Damage can occur if dropped or struck with hard objects.

7. CMOS-LSI circuitry is used in the LCD module, so avoid damage due to static electricity. When handling the module, use a

4

wrist ground or anchor ground.

8. Do not expose the LCD module to direct sunlight or strong ultraviolet rays for extended periods.

9. Do not store the LCD module below the temperature conditions described in the specifications. Doing so could result in
freezing of the liquid crystal, loss of resilience, or other damage.

10. Do not disassemble the LCD module. Such actions could result in improper operation.

11. When transporting the LCD module, do not use packing containing epoxy resin (amine) or silicon resin (alcohol or oxim).
The gas generated by these materials can cause loss of polarity.

Entering Service Mode

5

1. Set VOLUME to minimum and press MUTE button twice on the remote
control.

Ļ

Ļ

Service Mode display

2. Press MUTE button again and hold button down.

3. While holding the MUTE button, press MENU button on TV set.

Selecting the Adjusting Item

Every pressing of CH

Adjusting the Data

Pressing of VOLUME

or button in the service mode changes the adjustment items.

or button will change the value of data in the range from 00H to FFH. The variable range depends on

the adjusting item.

Exiting Service Mode

Pressing POWER button to turn off the TV once.

Setting Panel Option Data and SET-ID Data

6

1. Panel option data is subject to OP4 and OP5.
Enter to service mode and select menu of OP4 or OP5 by pressing CH or CH during display of adjustment
menu. After selecting OPT4 or OPT5, press

2. Whenever using new MAIN PC board to the set, set the SET-ID data according to panel option data.

Panel Maker OPT 4

MODEL SIZE TOP Running Change TOP Running Change OPT 3 OPT 5 SET-ID

RV530U 46 Samsung - 6AH - 60H 00H 93H

Exit from Service Mode

Pressing POWER button to turn off the TV once.

Firmware Update Process

Updating this chassis family is accomplished using an SD card furnished by Toshiba. With the unit operating, insert the card
into the card slot labeled “Service only” located on either the side or back of the instrument. After the card is inserted, simply
follow the step by step update instructions displayed on the screen.

LED BLINK CODES

The green and yellow LED lights on the TV (at the bottom center of the TV) indicate the TV's status, as described below:

Note: If the TV loses A/C power (e.g., a power outage occurs or the power cord is unplugged), when power is restored, the
yellow LED will blink while the TV is booting until the remote control is usable. This is normal and is not a sign of malfunction.

+ or - to set OPT4 or OPT5 value as table below.



7

46RV530U Power Distribution and Plug Layout

8

24V Inverter Supplies

LVDS Inverter

1. 24V

2. 24V

3. 24V

4. 24V

5. 24V

6. GND

7. GND

8. GND

9. GND

10. GND

CN60

Main

CN61

CN746

CN90

CN91

CN745

NU

Charis

LED/IR

PCBs

1. GND

2. 5V1<

P811A

3. GND

4. 12V<

5. 12V<

6. 12V<

7. GND

8. NC

9. NC

10. GND

11. NC

12. NC

13. 18V Aud.<

14. Aud. GND

S-Power

Standby voltages

are in blue italic.

P812A

P812B

P810A

P861

P860

1. GND

2. GND

3. GND

4. 5V1>

5. 5V1>

6. 5V1>

7. GND

8. GND

9. GND

P-Power

1. 12V LCD<

2. 12V LCD<

3. GND

4. GND

5. 3.2V.PWR LCD>

6. NC

7. 2.9V AC Det.<

8. 3.2V PWR Sig.>

9. 3V PWR Prot.<

AC In

P803AP802B

Dead

9

Set

Suspect the main

PCB.

any LEDs blink after

Do

the on/off switch is

pressed?

Yes

24 volts appear at

pin 1-5 of P860 on the

power board when on/

off is pressed?

YesNo

Use

the LED blink

chart to help

diagnose the

problem.

Does

Yes

3.2 volts appear at

pin 8 of P810 on the

power board when on/

off is pressed?

No

Suspect the

P power PCB.

Does

Suspect the

S power PCB.

No

No

5 volts present at pin 2
of P811 as soon as AC

is applied?

Is

No

Yes

Is

3 volts present at

Pin 9 of P810 as soon

as AC is applied?

No

Yes

Is

2.9 volts present at

pin 7 of P810 as soon

as on/off is

pressed?

Yes

Suspect the main

PCB.

*** Contact Toshiba at

10

www7.tacp.com for
warranty authorization

Picture

Problems

NO

Troubleshoot for

backlight problelms.

the back light function

normally when the unit

Does

is turned on?

(P)* - 46 and 52 inch RV models
contain a P-power supply module.

YES

YES

Is

the screen discolored

or does it have streaks

or dark areas with no

signal input?

YES

Replace
the Main

Module.

If the LCD Control

Board is available, try

it. If this does not help,

replace the LCD

display panel. ***

NO

When

the input button

is pressed on the
receiver or remote, is
the on screen display

clear and

normal?

NO

NO

Using an

oscilloscope, can an

LVDS signal be

detected at CN60 on

the Main PCB?

Examples

YES

This signal viewed from
LVDS connector
referencing cold ground.

Suspect the LCD

Control board.

Backlight

11

Problems

(P)* - 46 and 52 inch
RV models contain a P­power supply module.

Replace the

(P)* Power

If it is

available, replace the

display T-Control PCB.

If it is not available,

replace the LCD display.

***

supply

module.

Is

24 VDC present

at pins 1 through 5 of

P860 and P861 when

the unit is turned

on?

LVDS connector

YES

CN60 is unplugged, Is

12VDC present at pins 1

and 2 of P810A when

the unit is turned

NO

If

on?

Does the back light

function and then turn

off?

YESNO

Is 12VDC

present at pins 1

and 2 of P810A when

the unit is

turned on?

NO

YESNO

YES

If it is

available, try one or

both CCF inverters. If

this does not help,

replace the LCD

display. ***

*** Contact Toshiba at
www7.tacp.com for
warranty authorization

YES

Is 3.2VDC

present at pin 5 of

P810A when the unit is

turned on?

NO

Suspect the

main module.

Sound

12

Problems

NO

Distorted

Is 18VDC

present at pin 13 of

P811A when the unit is

turned on?

Is there no sound or is

the audio distorted?

YES

No Sound

NO

If the

input selection is

changed, does audio

appear?

YES

Problem

solved.

Suspect the

(S)* power

supply

module.

*P811A is located on
the “S” power supply
in the 46 and 52inch
models.

Replace the

Main module

PARTS LIST

13

Precaution

WARNING: BEFORE SERVICING THIS CHASSIS, READ THE "X-RAY

RADIATION PRECAUTION" FOR DIRECT VIEW CTV ONLY, "SAFETY

PRECAUTION" AND "PRODUCT SAFETY NOTICE" OF THIS MANUAL.

CAUTION: 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

PRECAUTION and PRODUCT SAFETY NOTICE.

Do not degrade the safety of the receiver through improper servicing.

Note:

z The part number must be used when ordering parts, in order to assist in processing, be

sure to include the Model number and Description.

z The PC board assembly with mark is no longer available after the end of the

production.

Location Part No. Description Comments

p

py

14

**B001 75011245 DISPLAY , LTA460HB07 LCD Panel

A201 75011247 FRONT BEZEL ASSY 46RV530U, FRONT Cabinet Front
A401 75011248 BACK COVER ASSY 46RV530U, BACK COVER Cabinet Back
A420 75010936 LEG STAND LEG ASSY, STAND LEG ASSY 42RV500 Stand Leg
A421 75010935 BASE BASE ASSY, BASE ASSY 42RV500 Base
A422 75010937 CASTOR/LEG TOOL SET, TOOL SET Castor tool and screws
K902 75010932 REMOCON HAND UNIT, CT-90302 Remote Control

MZ01 75011246 WIRE HARNESS, LVDS LVDS Cable

P801 75002678 POWER CORD, INQ2682(1) AC Cord
U01A 75012805 PC BOARD ASSY, PE0564A1,P-POWER Power PCB
U02A 75011608 PC BOARD ASSY, PE0563A1, S-POWER, 46RV530U Sub-Power PCB

U03AS 75012466 PC BOARD ASSY, PE0541A(46RV530U), MAIN Main PCB

U04A 75010926 PC BOARD ASSY, PE0548C1, LED LED PCB
U04B 75010927 PC BOARD ASSY, PE0548C2, REMOTE Remote PCB
W661 75010928 SPEAKER ASSY 35X160 8-OHM 10W, SPK-1504AM Speaker

Y102 75010933 MANUAL, OW NERS MANUAL E/F Owners Manual

** Contact Toshiba at www7.tac

.com for warranty authorization

TOSHIBA CORPORATION

1-1, SHIBAURA 1-CHOME, MINATO-KU, TOKYO 105-8001, JAPAN