Sony BRAVIA KDL-32L4000 User manual

LCD DIGITAL COLOR TELEVISION
SERVICE MANUAL CZ1 CHASSIS
MODEL NAME REMOTE COMMANDER DESTINATION
9-883-774-04
KDL-32L4000 RM-YD025 US
KDL-32L4000 RM-YD025 CANADA
KDL-37L4000 RM-YD025 US
KDL-37L4000 RM-YD025 CANADA
HISTORY INFORMATION FOR THE FOLLOWING MANUAL:
ORIGINAL MANUAL ISSUE DATE: 3/2008
☛
:UPDATED ITEM
REVISION DATE SUBJECT
3/2008 No revisions or updates are applicable at this time.
5/2008 Corrected steps to access service mode. Replaced page 30.
Revised information regarding “Resetting to Factory Defaults...” Replaced page 31.
Replaced Frame Diagrams to include Board labels. Replaced pages 36 & 37.
8/2008 Reissue entire manual due to multiple updates.
8/2008 Updated reference to LCD Panels service manual. Replaced pages 63 & 64.

LCD DIGITAL COLOR TELEVISION
SERVICE MANUAL CZ1 CHASSIS
MODEL NAME REMOTE COMMANDER DESTINATION
9-883-774-04
KDL-32L4000 RM-YD025 US
KDL-32L4000 RM-YD025 CANADA
KDL-37L4000 RM-YD025 US
KDL-37L4000 RM-YD025 CANADA
Self Diagnosis
Supported model
KDL-37L4000 RM-YD025

3
KDL-32L4000/37L4000
KDL-32L4000/37L4000
TABLE OF CONTENTS
SECTION TITLE PAGE SECTION TITLE PAGE
Specifications ................................................................................. 4
Warnings and Cautions .................................................................. 6
Safety-Related Component Warning .............................................. 8
Safety Check-Out ......................................................................... 10
Self-Diagnostic Function................................................................11
SECTION 1: DISASSEMBLY............................................................... 12
1-1. Rear Cover Removal............................................................ 12
1-2. H1 Board Removal............................................................... 12
1-3. A Board and G Board Removal............................................ 13
1-4. Table-Top Stand Assembly and Under Cover Removal ....... 13
1-5. AC Inlet and Bracket Removal ............................................. 14
1-6 Under Bar, H2 Board (IR), H3 Board (LED) Removal .......... 14
1-7. Loudspeakers Removal ....................................................... 14
1-8. Structural Frames and Brackets Removal
(KDL-32L4000 Only) ............................................................ 15
1-9. Structural Frames and Brackets Removal
(KDL-37L4000 Only) ............................................................ 16
1-10.LCD Panel Removal............................................................. 17
1-11. Balancer (MT Inverter) Board Removal
(KDL-32L4000 Only) ............................................................ 18
1-12.Balancer (MT Inverter) Board Removal
(KDL-37L4000 Only) ............................................................ 19
Wire Dressing ............................................................................... 20
KDL-32L4000 Only............................................................... 20
KDL-37L4000 Only............................................................... 25
SECTION 2: SERVICE ADJUSTMENTS............................................. 30
2-1. Accessing Service (Factory) Mode ...................................... 30
2-2. Reviewing Service (Factory) Mode ...................................... 31
2-3. Resetting to Factory Defaults after Board Replacement...... 31
2-4. Viewing Model Information................................................... 32
SECTION 3: DIAGRAMS..................................................................... 33
3-1. Circuit Boards Location ........................................................ 33
3-2. Printed Wiring Boards and
Schematic Diagrams Information ......................................... 33
3-3. Block Diagram...................................................................... 35
3-4. Frame Diagrams .................................................................. 36
3-4.1. KDL-32L4000 Only .................................................. 36
3-4.2. KDL-37L4000 Only .................................................. 37
3-5. Schematics and Supporting Information .............................. 38
A Board Schematic Diagram (1 of 16).................................. 38
A Board Schematic Diagram (2 of 16).................................. 39
A Board Schematic Diagram (3 of 16).................................. 40
A Board Schematic Diagram (4 of 16).................................. 41
A Board Schematic Diagram (5 of 16).................................. 42
A Board Schematic Diagram (6 of 16).................................. 43
A Board Schematic Diagram (7 of 16).................................. 44
A Board Schematic Diagram (8 of 16).................................. 45
A Board Schematic Diagram (9 of 16).................................. 46
A Board Schematic Diagram (10 of 16)................................ 47
A Board Schematic Diagram (11 of 16)................................ 48
A Board Schematic Diagram (12 of 16)................................ 49
A Board Schematic Diagram (13 of 16)................................ 50
A Board Schematic Diagram (14 of 16)................................ 51
A Board Schematic Diagram (15 of 16)................................ 52
A Board Schematic Diagram (16 of 16)................................ 53
G Board Schematic Diagram (1 of 2) ................................... 55
G Board Schematic Diagram (2 of 2) ................................... 56
H1 Board Schematic Diagram.............................................. 59
H2 Board Schematic Diagram.............................................. 60
H3 Board Schematic Diagram.............................................. 61
SECTION 4: EXPLODED VIEWS........................................................ 62
4-1. Rear Cover Assembly and Table-Top Stand Assembly ....... 62
4-2. Chassis ................................................................................ 63
4-3. Bezel Assembly and LCD Panel .......................................... 64
APPENDIX A: ENCRYPTION KEY COMPONENTS..........................A-1

4
KDL-32L4000/37L4000
KDL-32L4000/37L4000
SPECIFICATIONS
Design and specifications are subject to change without notice.
120V - 240V AC, 50/60Hz
Video (IN) 1/2
S Video (4-Pin Mini DIN)
Y: 1.0 Vp-p, 75 ohms unbalanced, sync negative
C: 0.286 Vp-p (Burst signal), 75 ohms
Video
1.0 Vp-p, 75 ohms unbalanced, sync negative
Audio
500 mVrms (100% modulation)
Impedance: 47 kilohms
COMPONENT IN 1/2
YPBPR(Component Video)
Y:1.0 Vp-p, 75 ohms unbalanced, sync negative
P
B:0.7 Vp-p, 75 ohms
P
R:0.7 Vp-p, 75 ohms
Signal format: 480i, 480p, 720p, 1080i
AUDIO
500 mVrms (100% modulation)
Impedance: 47 kilohms
HDMI IN 1/2:
HDMI: Video:480i, 480p, 720p, 1080i, 1080p
Audio: Two channel linear PCM 32, 44.1 and
48 kHz, 16, 20 and 24 bits
AUDIO: (HDMI IN 1 only) 500 mVrms (100% modulation)
Impedance: 47 kilohms
AUDIO OUT:
500 mVrms (100% modulation)
DIGITAL SUDIO OUT (OPTICAL):
Optical Digital Audio Output (PCM/Dolby Digital)
PC IN:
Analog RGB (D-sub 14-pin)
0.7 Vp-p, 75 ohms, positive
AUDIO (Stereo mini jack):
500 mVrms (100% modulation)
Impedance: 47 kilohms
Power Requirements
Trademark Information
HDMI, the HDMI logo and High-Definition Multimedia Interface are
trademarks or registered trademarks of HDMI Licensing LLC.
Manufactured under license from Dolby Laboratories. “Dolby” and the
double-D symbol are trademarks of Dolby Laboratories.
Blu-ray Disc is a trademark.
Television System
NTSC American TV Standard
ATSC (8VSB Terrestrial) ATSC compliant 8VSB
QAM on cable ANSI/SCTE 07 2000
Channel Coverage
Analog Digital
Terrestrial 2-69 2-69
Cable 1-135 1-135
Antenna
75-ohm external terminal for VHF/UHF
Panel System
LCD (Liquid Crystal Display) Panel
Display Resolution (horizontal x vertical):
1,366 dots x 768 lines
Screen Size (measured diagonally)
approx. 32 inches (KDL-32L4000 Only)
approx. 37 inches (KDL-37L4000 Only)
Supplied Accessories
Remote Commander RM-YD025
Two Size AA (R6) Batteries
AC Power Cord
Table-Top Stand
Screws (3)
Cable Band
Operating Instructions
Quick Setup Guide
Warranty Card
Online Registration Card
Open-source Software Flyer
Optional Accessories
Connecting Cables
Support Belt Kit
Wall-Mount Bracket
SU-WL500
TV Stand
SU-FL300M

5
KDL-32L4000/37L4000
KDL-32L4000/37L4000
KDL-32L4000 KDL-37L4000
in use 165W 190W
in standby
mm
in
with stand
mm 807 x 585 x 242 mm 933 x 653 x 276 mm
in 317/8 x 231/8 x 95/8 in 363/4 x 253/4 x 107/8 in
without stand
mm 807 x 548 x 101 mm 933 x 616 x 112 mm
in 317/8 x 215/8 x 4 in 363/4 x 243/8 x 41/2 in
Mass
with stand
kg 16 kg 21.2 kg
lbs 35 lbs 5 oz 46 lbs 12 oz
without stand
kg 13.8 kg 18.2 kg
lbs 30 lbs 7oz 40 lbs 2 oz
All measurements are approximations.
Dimensions (W x H x D)
Power Consumption
Speaker Output (W)
Dimensions (W x H x D)
Less than 1W
10W + 10W
50 x 115 mm
2 x 43/4 in
SPECIFICATIONS (CONTINUED)

6
KDL-32L4000/37L4000
KDL-32L4000/37L4000
WARNINGS AND CAUTIONS
CAUTION
These servicing instructions are for use by qualified service personnel only. To reduce the risk of electric shock, do not
perform any servicing other than that contained in the operating instructions unless you are qualified to do so.
WARNING!!
An isolation transformer should be used during any service to avoid possible shock hazard, because of live chassis.
The chassis of this receiver is directly connected to the ac power line.
!SAFETY-RELATED COMPONENT WARNING!!
Components identified by shading and ! mark on the schematic diagrams, exploded views, and in the parts list are
critical for safe operation. Replace these components with Sony parts whose part numbers appear as shown in this
manual or in supplements published by Sony. Circuit adjustments that are critical for safe operation are identified in
this manual. Follow these procedures whenever critical components are replaced or improper operation is suspected.
ATTENTION!!
Ces instructions de service sont à l’usage du personnel de service qualifié seulement. Pour prévenir le risque de choc
électrique, ne pas faire l’entretien autre que celui contenu dans le Mode d’emploi à moins que vous soyez qualifié
faire ainsi.
Afin d’eviter tout risque d’electrocution provenant d’un chássis sous tension, un transformateur d’isolement doit etre
utilisé lors de tout dépannage. Le chássis de ce récepteur est directement raccordé à l’alimentation du secteur.
!ATTENTION AUX COMPOSANTS RELATIFS A LA SECURITE!!
Les composants identifies par une trame et par une marque ! sur les schemas de principe, les vues explosees et
les listes de pieces sont d’une importance critique pour la securite du fonctionnement. Ne les remplacer que par des
composants Sony dont le numero de piece est indique dans le present manuel ou dans des supplements publies par
Sony. Les reglages de circuit dont l’importance est critique pour la securite du fonctionnement sont identifies dans le
present manuel. Suivre ces procedures lors de chaque remplacement de composants critiques, ou lorsqu’un mauvais
fonctionnement suspecte.

7
KDL-32L4000/37L4000
KDL-32L4000/37L4000
WARNINGS AND CAUTIONS (CONTINUED)
To avoid dropping the TV and causing serious injury, be sure to follow
these guidelines:
sBefore carrying the TV, disconnect all cables.
sCarrying the large size TV requires two or more people.
sWhen you carry the TV, place your hand as illustrated and hold it
securely. Do not put stress on the LCD panel.
sWhen lifting or moving the TV, hold it firmly from the bottom. Place
your palm directly under the panel.
sWhen carrying, do not subject the TV to shocks or vibration, or
excessive force.
sPlace your palm directly underneath, but do not squeeze the
panel’s speaker grill area.
sWhen carrying the TV, to avoid pinching your hands or fingers do not
put your hands between the TV and stand, or hold the bottom corner of
the TV.
Assurez-vous de suivre ces consignes pour éviter de laisser tomber le
téléviseur et de provoquer des blessures graves :
sAvant de transporter le téléviseur, débranchez tous les câbles.
sLe transport du téléviseur doit être effectué par au moins deux
personnes.
sLorsque vous le transportez, placez vos mains tel que cela est illustré
et tenez solidement l’appareil. N’appliquez pas de pression sur
l’écran ACL.
sLorsque vous transportez le téléviseur, ne le soumettez pas à des
chocs ou vibrations, ni à une force excessive.
sLorsque vous levez ou déplacez le téléviseur, assurez-vous de tenir
solidement de la base. Placez la paume des mains directement sous
le panneau.
sPositionnez votre paume directement sous l’appareil et veillez à
ne pas exercer de pression contre la grille des haut-parleurs
du panneau.
sQuand porter la TV, pour éviter de pincer vos mains ou doigts ne
mettent pas vos mains entre la TV et le stand, ou tenez le coin
inférieur de la TV.
CARRYING THE TV
POUR TRANSPORTER LE TÉLÉVISEUR

8
KDL-32L4000/37L4000
KDL-32L4000/37L4000
SAFETY-RELATED COMPONENT WARNING
There are critical components used in LCD color TVs that are important for safety. These components are identified with shading and
!
mark on the schematic diagrams and the electrical parts list. It is essential that these critical parts be replaced only with the part number
specified in the electrical parts list to prevent electric shock, fire, or other hazard.
NOTE: Do not modify the original design without obtaining written permission from the manufacturer or you will void the original parts and
labor guarantee.
USE CAUTION WHEN HANDLING THE LCD PANEL
When repairing the LCD panel, be sure you are grounded by using a wrist band.
When installing the LCD panel on a wall, the LCD panel must be secured using the 4 mounting holes on the rear cover.
To avoid damaging the LCD panel:
do not press on the panel or frame edge to avoid the risk of electric shock.
do not scratch or press on the panel with any sharp objects.
do not leave the module in high temperatures or in areas of high humidity for an extended period of time.
do not expose the LCD panel to direct sunlight.
avoid contact with water. It may cause a short circuit within the module.
disconnect the AC adapter when replacing the backlight (CCFL) or inverter circuit.
(High voltage occurs at the inverter circuit at 650Vrms.)
always clean the LCD panel with a soft cloth material.
use care when handling the wires or connectors of the inverter circuit. Damaging the wires may cause a short.
protect the panel from ESD to avoid damaging the electronic circuit (C-MOS).
LEAKAGE CURRENT HOT CHECK CIRCUIT

9
KDL-32L4000/37L4000
KDL-32L4000/37L4000
The circuit boards used in these models have been processed using
Lead Free Solder. The boards are identified by the LF logo located
close to the board designation e.g. H1 etc [ see example ]. The
servicing of these boards requires special precautions to be taken as
outlined below.
example 1
It is strongly recommended to use Lead Free Solder material in order to guarantee optimal quality of new solder joints.
Lead Free Solder is available under the following part numbers :
Due to the higher melting point of Lead Free Solder the soldering iron tip temperature needs to be set to 370 degrees centigrade.
This requires soldering equipment capable of accurate temperature control coupled with a good heat recovery characteristics.
For more information on the use of Lead Free Solder, please refer to
http://www.sony-training.com
rebmuntraP retemaiD skrameR
91-500-046-7mm3.0gK52.0
02-500-046-7mm4.0gK05.0
12-500-046-7mm5.0gK05.0
22-500-046-7mm6.0gK52.0
32-500-046-7mm8.0gK00.1
42-500-046-7mm0.1gK00.1
52-500-046-7mm2.1gK00.1
62-500-046-7mm6.1gK00.1

10
KDL-32L4000/37L4000
KDL-32L4000/37L4000
SAFETY CHECK-OUT
After correcting the original service problem, perform the following
safety checks before releasing the set to the customer:
1. Check the area of your repair for unsoldered or poorly soldered
connections. Check the entire board surface for solder splashes and
bridges.
2. Check the interboard wiring to ensure that no wires are “pinched” or
touching high-wattage resistors.
3. Check that all control knobs, shields, covers, ground straps, and
mounting hardware have been replaced. Be absolutely certain that
you have replaced all the insulators.
4. Look for unauthorized replacement parts, particularly transistors,
that were installed during a previous repair. Point them out to the
customer and recommend their replacement.
5. Look for parts which, though functioning, show obvious signs of
deterioration. Point them out to the customer and recommend their
replacement.
6. Check the line cords for cracks and abrasion. Recommend the
replacement of any such line cord to the customer.
7. Check the antenna terminals, metal trim, “metallized” knobs, screws,
and all other exposed metal parts for AC leakage. Check leakage as
described below.
Leakage Test
The AC leakage from any exposed metal part to earth ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microamperes).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the manufacturers’ instructions to use these
instructions.
2. A battery-operated AC milliampmeter. The Data Precision 245
digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of a VOM
or battery-operated AC voltmeter. The “limit” indication is 0.75
V, so analog meters must have an accurate low voltage scale.
The Simpson’s 250 and Sanwa SH-63TRD are examples of
passive VOMs that are suitable. Nearly all battery-operated digital
multimeters that have a 2 VAC range are suitable (see Figure A).
How to Find a Good Earth Ground
A cold-water pipe is a guaranteed earth ground; the cover-plate
retaining screw on most AC outlet boxes is also at earth ground. If the
retaining screw is to be used as your earth ground, verify that it is at
ground by measuring the resistance between it and a cold-water pipe
with an ohmmeter. The reading should be zero ohms.
If a cold-water pipe is not accessible, connect a 60- to 100-watt
trouble- light (not a neon lamp) between the hot side of the receptacle
and the retaining screw. Try both slots, if necessary, to locate the hot
side on the line; the lamp should light at normal brilliance if the screw
is at ground potential (see Figure B).
To Exposed Metal
Parts on Set
0.15 μF
Earth Ground
AC
Voltmeter
(0.75V)
Trouble Light
AC Outlet Box Ohmmeter
Cold-water Pipe
Figure A. Using an AC voltmeter to check AC leakage. Figure B. Checking for earth ground.

11
KDL-32L4000/37L4000
KDL-32L4000/37L4000
SELF-DIAGNOSTIC FUNCTION
Self Diagnosis
Supported model
IMPORTANT:
The units in this manual DO NOT contain a self-diagnostic function. If an error occurs, the TV will not stay on. It is our recommendation that if a repair
is required for these sets, the technician should bring both the A Board and the G Board to the customer location.
Control Buttons
TIMER STANDBY POWER
Description of LED Indictors
The units in this manual DO NOT contain a self-diagnostic function.

12
KDL-32L4000/37L4000
KDL-32L4000/37L4000
1-1. REAR COVER REMOVAL
SECTION 1: DISASSEMBLY
NOTE: The Rear Cover of both models is attached to the Bezel Assembly with 4 small tabs.
Use caution when removing the Rear Cover not to damage these tabs.
1Remove 6 screws from terminals, +BVTP 3X12 TYPE2 IT-3
2Remove 3 screws, +PSW M4X8 (KDL-32L4000 ONLY)
Remove 4 screws, +PSW M5X8 (KDL-37L4000 ONLY)
3Remove 2 screws, +PSW M5X12 (KDL-37L4000 ONLY)
4Remove 17 screws +BVTP2 4X16(KDL-32L4000 ONLY),
18 screws +BVTP2 4X16 (KDL-37L4000 ONLY)
1-2. H1 BOARD REMOVAL
1Remove from bezel
2Disconnect 1 connector
3Remove 5 screws, +B 2X6 TYPE 2
4Remove 1 screw, +PSW M3X5 and release Earth Connector
(KDL-32L4000 ONLY)
Remove 1 screw, +BVST 3X8 and release Earth Connector
(KDL-37L4000 ONLY)
Rear Cover
Tab Inserts
2
4
1
3
Bezel
Button Bracket
Button
H1 Board
1
2
3
4

13
KDL-32L4000/37L4000
KDL-32L4000/37L4000
1-3. A BOARD AND G BOARD REMOVAL
1-4. TABLE-TOP STAND ASSEMBLY AND
UNDER COVER REMOVAL
1Remove 4 screws +BVST 3X8 (KDL-32L4000 ONLY),
12 screws +BVST 3X8 (KDL-37L4000 ONLY),
2Remove 2 screws, 4/40 UNC (HEX)
3Remove 2 screws, +PSW M3X5
4Remove Hexagon Nut from tuner
5Remove 6 screws, +BVST 3X8
6Disconnect 7 connectors
7Remove 3 screws from Main Bracket, +BVST 3X8 (KDL-37L4000 ONLY)
8Remove 2 screws from Main Bracket, +PSW M3X5 (KDL-32L4000 ONLY)
9Remove 1 screw, +BVTP2 4X16
10 Remove 2 screws from Main Bracket, +BVST 3X8 (KDL-32L4000 ONLY)
11 Disconnect 4 connectors
12 Remove 4 screws, +BVST 3X8
1Remove3 screws, +PSW M5X16
2Remove 1 screw, +BVTP2 4X16
4
3
2
1
5
7
8
10
12
11 9
6
Main Shield
Side Bracket
A Board
Main Bracket
G Board
Bezel
2
Table-Top Stand Assembly
Bottom Bracket
Under Cover
1
☛

14
KDL-32L4000/37L4000
KDL-32L4000/37L4000
1-5. AC INLET AND BRACKET REMOVAL
1-6 UNDER BAR, H2 BOARD (IR), H3 BOARD (LED) REMOVAL
1Remove 1 screw, +PSW M4X6
2Remove 2 screws, KTT 3X10 (S TYPE)
3Remove 1 screw, +BVST 3X8
1Remove 2 screws, +BVTP2 4X16
2Remove 2 screws, +BVTP 3X8 TYPE2 IT-3
3Disconnect 1 connector
4Disconnect 1 connector
5Remove 1 screws, +BVTP 3X8 TYPE2 IT-3
1
2
3
Earth Terminal
Bottom Bracket
AC Inlet
AC Bracket
1-7. LOUDSPEAKERS REMOVAL
1Remove 3 screws from each loudspeaker, +BVTP2 4X16
Speakers
1
1
Under Bar
H2 Board (IR)
H3 Board (LED)
1
2
3
4
5

15
KDL-32L4000/37L4000
KDL-32L4000/37L4000
1-8. STRUCTURAL FRAMES AND BRACKETS REMOVAL (KDL-32L4000 ONLY)
1Remove 4 screws from both Top Vesa Bracket and Bottom Vesa Bracket, +PSW M4X8
2Top Frame (L) and Top Frame (R) Removal
Remove 2 screws from Bezel and each Top Frames, +BVTP2 4X16
Remove 1 screw from Panel and each Top Frames, +PSW M4X6
3Side Bracket (L) Removal
Remove 2 screws from Bezel and Side Bracket (L), +BVTP2 4X16
Remove 2 screws from Panel and Side Bracket (L), +PSW M4X8
4Main Frame (L) and Main Frame (R) Removal
Remove 1 screw from Bezel and each Main Frames, +BVTP2 4X16
Remove 1 screw from Panel and each 32-Main Frames, +PSW M4X6
Remove 2 screws from Bottom Frame and each 32-Main Frames, +PSW M4X8
5Bottom Frame Removal
Remove 1 screw from Bezel and Bottom Frame, +BVTP2 4X16
Remove 4 screws from Panel and Bottom Frame, +PSW M4X6
6Side Bracket (R) Removal
Remove 3 screws from Bezel and Side Bracket (R), +BVTP2 4X16
Remove 2 screws from Panel and Side Bracket (R), +PSW M4X8
1
Vesa (Top)
1
2
3
4
5
6
2
4
Vesa (Bottom)
Main Frame (L)
Main Frame (R)
Bottom Frame
Top Frame (R)
Top Frame (L)
Side Bracket (R)
Side Bracket (L)

16
KDL-32L4000/37L4000
KDL-32L4000/37L4000
1-9. STRUCTURAL FRAMES AND BRACKETS REMOVAL (KDL-37L4000 ONLY)
1
Vesa (Top)
2
3
4
5
6
9
3
5
Vesa (Bottom)
Main Frame (L)
Main Frame (R)
Bottom Frame
Top Frame (R)
Top Frame (L)
Side Bracket (R)
Side Bracket (L)
1Remove 4 screws from Top Vesa Brackets, +PSW M4X8
2Remove 6 screws from Bottom Vesa Brackets, +PSW M4X8
3Top Frame (L) and Top Frame (R) Removal
Remove 2 screws from Bezel and each Top Frames, +BVTP2 4X16
Remove 1 screw from Panel and each Top Frames, +PSW M4X8
4Side Bracket (L) Removal
Remove 2 screws from Bezel and Side Bracket (L), +BVTP2 4X16
Remove 2 screws from Panel and Side Bracket (L), +PSW M4X8
5Main Frame (L) and Main Frame (R) Removal
Remove 1 screw from Bezel and each Main Frames, +BVTP2 4X16
Remove 3 screws from each 37-Main Frames, +PSW 5X8
6Bottom Frame Removal
Remove 4 screws from Bezel and Bottom Frame, +BVTP2 4X16
7Side Bracket (R) Removal
Remove 2 screws from Bezel and Side Bracket (R), +BVTP2 4X16
Remove 2 screws from Panel and Side Bracket (R), +PSW M4X8

17
KDL-32L4000/37L4000
KDL-32L4000/37L4000
1-10. LCD PANEL REMOVAL
1Disconnect 1 connector.
2Remove ,
2 screws +BVTP2 4X16 (KDL-32L4000 ONLY),
3 screws +BVTP2 4X16 (KDL-37L4000 ONLY)
3Release hooks and slide out from Bezel.
LCD Panel
Clear Panel
Bezel Assembly
2
1
3
1-10-1.CLEANING THE LCD PANEL
CAUTION: When cleaning the TV, be sure to unplug the power cord to avoid any chance of electric shock.
1Clean the cabinet of the TV with a dry soft cloth.
2Wipe the LCD screen gently with a soft cloth.
 Stubborn stains may be removed with a cloth slightly moistened with a solution of mild soap and warm water.
 If using a chemically pretreated cloth, please follow the instruction provided on the package.
 Never use strong solvents such as a thinner, alcohol or benzine for cleaning.
 Periodic vacuuming of the ventilation openings is recommended to ensure to proper ventilation.
☛

18
KDL-32L4000/37L4000
KDL-32L4000/37L4000
Balancer Board
1
2
Inverter Cover
Plastic Strip
holding
Lamp Socket
Inverter Board
DO NOT
REMOVE
BACKLIGHT
SCREWS
1-11. BALANCER (MT INVERTER) BOARD REMOVAL (KDL-32L4000 ONLY)
1Remove 5 screws from Board Cover.
2Pull out the Board from Lamp socket
SHIELD REMOVAL
INVERTER BOARD REMOVAL
WARNING
NEVER REMOVE THE
SCREWS SECURING THE
PLASTIC STRIP HOLDING
THE LAMP SOCKETS
DAMAGE TO THE
BACKLIGHT TUBES WILL
Only remove the screws securing the inverter
cover which may be metal or plastic. The
remaining plastic strip contains sockets for the
fluorescent backlights and should never be
loosened. The backlights will pop out of the
sockets and/or break the backlight requiring a
LCD panel replacement. The example shown
is a 32” model but applies to all models.
REMOVE SCREWS
SECURING
SHIELD
REMOVE
CONNECTOR AND
PULL BOARD TO
THE RIGHT
!
.
OCCUR!
BACKLIGHT
END VIEW
SOCKET

19
KDL-32L4000/37L4000
KDL-32L4000/37L4000
1
2
1-12. BALANCER (MT INVERTER) BOARD REMOVAL (KDL-37L4000 ONLY)
1Remove 6 screws from Board Cover
2Disconnect 8 balancer connectors
SHIELD REMOVAL
CAUTION!
Disconnect the 8
Balancer Board Connectors
REMOVE SCREWS
SECURING
SHIELD
REMOVE
CONNECTOR AND
PULL BOARD TO
THE RIGHT

20
KDL-32L4000/37L4000
KDL-32L4000/37L4000
WIRE DRESSING
KDL-32L4000 ONLY
OVERALL VIEW