Toshiba 42L7453D User manual

SERVICE MANUAL
LCD Color Television
42L7453D
42L7463D
(Model Information)

EXPLODED VIEW
(1/2)
42L7453D/7463D series
Note:
These photographs are samples.
These photographs differ from the mass-production product.
A401S
P801x
A423S
A302
B001
E01
E02
A301
MZ04
W661
A202
PP21
U01A
U800
W662
U05A
H7501
MZ02
U802
MZ03
PP11
(Under U800)
(Under E01)
A201
MZ01
U02A
mark
(2 places)
U04A is removed.
U04A
A204
U03A
A201 is removed.

EXPLODED VIEW
(2/2)
42L7453D/42L7463D
Location Service Part No. Description
A201 75036653 PIECE PIECE C R ASSY 14B J8, APRQ42J010E
A202 75036654 PIECE PIECE C L ASSY 14B J8, APRQ42J020E
A204 75036484 PIECE LENS RMT 55Z8, LENS RMT 55Z8, FCRR42J010E
A301 75037699 KEY PLATE ASSY, LCRR55D010E
A302 75036510 PIECE PIECE CORD POW 14B, PIECE CORD POW 14B, LCRR42J050E
A401S 75037685 COVER ASSY, UNIT (FOR SERVICE USE), 39C0GD51L02 For 7453D only
A401S 75037989 COVER ASSY, UNIT (FOR SERVICE USE), 39C0GD51L01 For 7463D only
A423S 75038497 STAND ASSY, AMRQ42J020E
B001 75037694 S-Fit LCD Panel (Open Cell, LGD LC420DUK-SGK2)
E01 75036525 SHEET INSULATOR POW F 4247Z8, ELRR42J010E
E02 75036526 SHEET INSULATOR POW B 4247Z8, ELRR42J020E
H7501 75037687 TUNER, SUT-RE232TN, PK31001480E For 7453D only
H7501 75037985 TUNER, SUT-PE232TN, PK31001510E For 7463D only
MZ01 75037698 CABLE, FFC, 51P-51P P0.5 L255, 12Z163, NBX5100170E
MZ02 75037696 CABLE, FFC, 51P-51P P0.5 L150, 12Z159, NBX5100160E
MZ03 75037697 CABLE, FFC, 41P-41P P0.5 L150, 12Z160, NBX4100190E
MZ04 75036544 CABLE, 42Z8 8P FFC, NBX0800050E
P801B 75023310 POWER CORD, EUROPE UK, 103025/2, GA04009190E For (B) model only
P801E 75022864 POWER CORD, EUROPE CONTINENT, 103025/3, RL833, GA02024150E For (G) model only
P801N 75022864 POWER CORD, EUROPE CONTINENT, 103025/3, RL833, GA02024150E For (N) model only
PP11 75037773 CLAMP/CLIP/WIRE SADDLE UAMS-05S-2, UAMS-05S-2
PP21 75021227 CLAMP, WIRE SADDLE, RBWS-1WM-V0 BK
U01A 75037676 PC BOARD ASSY, MAIN, A-BOARD, B911PE1168A1, 461C7851L02 For 7453D only
U01A 75037984 PC BOARD ASSY, MAIN(A-BOARD), B911PE1168B1, 461C7851L01 For 7463D only
U02A 75037656 PC BOARD ASSY, FRC, A-BOARD, B911PE1159A1, 465C4551L01
U03A 75037005 PCB LED UNIT Z8J8 COMPAL, B910PE1152B1, 455C4251L01
U04A 75037007 PCB RMT UNIT Z8J8 COMPAL, B912PE1153B1, 455C4351L01
U05A 75037657 PC BOARD ASSY, KEY, A-BOARD, B911PE1169A1, 454C5451L01
U800 75036527 POWER UNIT, PSLF226A01A, PK101W0541E
U802 75037695 MODULE, WIRELESS LAN, WLU5053-D4(ROHS) EU, PK29820020E
W661 75036482 SPEAKER, SPK-1561AJ, CG10150000E, PK23150000I
W662 75036482 SPEAKER, SPK-1561AJ, CG10150000E, PK23150000I
SAFETY PRECAUTION
The parts identified by mark are critical for safety. Replace only with part number specified.
The mounting position of replacement is to be identical with originals.
The substitute replacement parts which do not have the same safety characteristics as specified
in the parts list may create shock, fire or other hazards.
Note:
Please see PPL put on Web PRESS for the newest information or other parts.

PANEL IDENTIFICATION
Serial No. part printed on Rating Label
Panel Identification Code
Marking Marking Marking
A
JS
BKT
CLU
DMV
ENW
FPX
GQY
HRZ
Panel Vendor
AUO
BriView
CMO
CHILIN
Panel Vendor
SAMSUNG
LPL/LGD
CPT
IPS
Panel Vendor
SHARP

REV. 00
Apr/16/2014

SERVICE MANUAL
LCD Color Television
42L7453D/7463D series
(System Information)

CONTENTS
1. IMPORTANT NOTICE
2. GREEN PRODUCT PROCUREMENT
3. LEAD-FREE SOLDER
4. SAFETY INSTRUCTION
5. SERVICE MODE
6. LED INDICATIONS FOR SERVICE
7. HOTEL MODE
8. MAIN BOARD EXCHANGE
9. WRITING SERIAL NUMBER INTO MAIN BOARD
10. INTERCONNECT
11. EXPLODED VIEW
12. SCHEMATIC DIAGRAM
1

IMPORTANT NOTICE
WARNING:
You are requested that you shall 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
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 30ºC to
40ºC (54ºF to 72ºF). 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.

(1/4)
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, 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.

(2/4)
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., 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.
Annex D
(normative)
Measuring network for TOUCH CURRENTS
Resistance values in orms (Ω).
V: Voltmeter or oscilloscope
(r.m.s. or peak reading)
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).

(3/4)
The potential at any point (TOUCH CURRENT) expressed as voltage and does
not exceed the following value:
The part or contact of a TERMINAL is not HAZARDOUS LIVE if:
a) The open-circuit voltage should not exceed 35 V (peak) a.c. or 60 V d.c. or, if a) is
not met.
b) The measurement of the TOUCH CURRENT shall be carried out in accordance
with IEC 60990, with the measuring network described in Annex D of this
standard.
The TOUCH CURRENT expressed as voltages and , does not exceed the
following values:
- for a.c. : = 35 V (peak) and = 0.35 V (peak);
- for d.c. : = 1.0 V
Note: The limit values of = 0.35 V (peak) for a.c. and = 1.0 V for d.c.
correspond to the values 0.7 mA (peak) a.c. and 2.0 mA d.c.

(4/4)
Product Safety Notice
Many electrical and mechanical parts in this chassis have special safety-related characteristics.
These characteristics are often passed unnoticed by a visual inspection and 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 characteristics as specified
in the parts list may create electrical shock, fire, or other hazards.

(1/3)
SERVICE MODE
ENTERING SERVICE MODE
1. Press button once on Remote Control.
TV mode changes as follows. Un-Mute => Mute
2. Press button again and keep pressing.
(Sound Mute is canceled)
3. While pressing the button, press button on TV control panel.
(Enter Service Mode)
S

(2/3)
KEY FUNCTION IN THE SERVICE MODE
The following key entry during display of adjustment menu provides special functions.
Button Function
button (on Remote) Test signal selection
P (on Remote) Selection of the adjustment items
Volume +/– (on Remote) Change of the data value
[7] button Automatic A/D Adjustment
(PC, Component, Composite(PAL, NTSC))
[9] button Self Check display ON
[Exit] button Exit from Service mode
Self Check display Off
CAUTION: Never try to perform initialization unless you have changed the memory IC.
TEST SIGNAL SELECTION
1) While displaying the adjustment menu, every pressing of button on the Remote Control changes the
built-in test patterns on screen as described below.
When a pattern is changed at the time of an ATV display, it can display only for a moment.
SELECTING THE ADJUSTING ITEMS
1) While displaying the adjustment menu, press the P button to cycle through the adjustment items in the
order of table. (P button for reverse order)
ADJUSTING THE DATA
1) While displaying the adjustment menu, press the VOLUME +/– button to change the value of data in
the range from 00H to FFH. The variable range depends on the adjusting item.
EXIT FROM SERVICE MODE
1) Press the [Exit] button on Remote.
Normal
Picture
Red screen Green screen Blue screen

(3/3)
ADJUSTING ITEMS IN THE SERVICE MODE
Item Description
RCUT RED CUTOFF
GCUT GREEN CUTOFF
BCUT BLUE CUTOFF
RDRV RED DRIVE
GDRV GREEN DRIVE
BDRV BLUE DRIVE
OSRC COOL R-CUTOFF-OFFSET for COOL
OSRC NATURAL R-CUTOFF-OFFSET for NATURAL
OSRC WARM R-CUTOFF-OFFSET for WARM
OSGC COOL G-CUTOFF-OFFSET for COOL
OSGC NATURAL G-CUTOFF-OFFSET for NATURAL
OSGC WARM G-CUTOFF-OFFSET for WARM
OSBC COOL B-CUTOFF-OFFSET for COOL
OSBC NATURAL B-CUTOFF-OFFSET for NATURAL
OSBC WARM B-CUTOFF-OFFSET for WARM
OSRD COOL R-DRIVE-OFFSET for COOL
OSRD NATURAL R-DRIVE-OFFSET for NATURAL
OSRD WARM R-DRIVE-OFFSET for WARM
OSGD COOL G-DRIVE-OFFSET for COOL
OSGD NATURAL G-DRIVE-OFFSET for NATURAL
OSGD WARM G-DRIVE-OFFSET for WARM
OSBD COOL B-DRIVE-OFFSET for COOL
OSBD NATURAL B-DRIVE-OFFSET for NATURAL
OSBD WARM B-DRIVE-OFFSET for WARM
OSRD 3D COOL R-DRIVE-OFFSET for COOL (3D)
OSRD 3D NATURAL R-DRIVE-OFFSET for NATURAL (3D)
OSRD 3D WARM R-DRIVE-OFFSET for WARM (3D)
OSGD 3D COOL G-DRIVE-OFFSET for COOL (3D)
OSGD 3D NATURAL G-DRIVE-OFFSET for NATURAL (3D)
OSGD 3D WARM G-DRIVE-OFFSET for WARM (3D)
OSBD 3D COOL B-DRIVE-OFFSET for COOL (3D)
OSBD 3D NATURAL B-DRIVE-OFFSET for NATURAL (3D)
OSBD 3D WARM B-DRIVE-OFFSET for WARM (3D)

LED INDICATIONS FOR SERVICE
SW Upgrade and Error conditions indicated by the Power LED is described below.
Power LED
Green blink SW Upgrade in Progress
Red SW Upgrade Failed
Green SW Upgrade Successful
/

(1/18)
HOTEL MODE
1. ENTERING HOTEL MODE MENU
Hotel Mode Menu should be shown by the following operation.
1) Open Main Menu by pressing Menu button of RCU.
2) Press the following password number “1048” with the button of Remote Control.
Note: Hotel Menu can be displayed to input the password number when there is focus in the first layer of
Main Menu.
2. DISPLAY OF HOTEL MODE MENU
- The Graphic Design and color of Hotel Mode Menu is the same as the User menu.
(Small differences which do not affect to operation will be acceptable)
- The language will follow the “Menu Language” setting in the menu
(Fig.1; Example of Menu Image)
3. OPERATING HOTEL MODE MENU
- To enable Hotel Mode, press ▲/▼buttons to select “Hotel Mode” item and press button.
Press ▲/▼buttons to select “On” and press OK button.
- Once Hotel Mode is “On”, the Hotel Mode settings will be enabled for adjusting.
- Press ▲/▼ buttons to select item of Hotel Mode Settings.
Press and ▲/▼ buttons to select settings and press OK button.
See the table below for explanation of each setting.
- Press Exit when finished adjusting the settings.

(2/18)
Item Options Description Factory
settings Gray Out Conditions
Hotel Mode On Enable Hotel Mode Off -
Off Disable Hotel Mode.
All the settings of Hotel Mode
are disabled.
Control Panel On Allow use of all Control panel
buttons
On - Grayed out when "Hotel
Mode" = [Off]
Off (All Functions) Prohibit use of all control panel
buttons.
But, Power Off -> On by control
panel POWER button is not
prohibited.
(Power On -> Off is prohibited.)
Moreover, TV can be rebooted
by a long pressing (4 seconds
or more) of the control panel
power button.
* Entering Service mode/Hotel
mode Menu is not prohibited.
* Control panel buttons are
available during Service mode.
Off (All except
power)
Prohibit use of all control panel
buttons.
But, Power On/Off by control
panel POWER button is not
prohibited.
* Entering Service mode/Hotel
mode Menu is not prohibited.
* Control panel buttons are
available during Service mode.

(3/18)
Remote Control On Enable the remote control buttons. On - Grayed out when "Hotel
Mode" = [Off]
Off Disable the remote control buttons.
*The following remote codes are
not disabled.
- Super User mode (40BFFE)
- S mode (40EEC3)
* If “Off" is selected, RCU will not
function in any menu (including
no menu) except Hotel Menu. To
turn this option “On” later, “Hotel
Menu shortcut” (MENU-1-0-4-8)
can be used to pop up Hotel
Menu.
* TV can be rebooted by a long
pressing (4 seconds or more) of the
Remote control power button.
*Remote Enabled during Service
mode/Hotel mode Menu.
Setup Menu On Allow access to Main menu On - Grayed out when "Hotel
Mode" = [Off]
Off Prohibit access to Main menu.
Main menu is grayed out and it is
prohibited to select.
* If “Off" is selected, Main menu
will not function. To turn this
option “On” later, “Hotel Menu
shortcut” (MENU-1-0-4-8) can be
used to pop up Hotel Menu.
Off (Except
Language)
Prohibit access to all items in Main
menu except for the Language
setting.
The prohibited items are not shown
on the menu. (Gray-out instead of
erasing is acceptable)
OSD Menu Control
(2nd layer) Picture On Enable Picture Menu On - Grayed out when "Hotel
Mode" = [Off]
Off Disable Picture Menu
Sound On Enable Sound Menu On
Off Disable Sound Menu
Options On Enable Option Menu On