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KDL-55W900A i

Cautions and Warnings ...................................................................................ii
Section 1 - Specifications and Layouts .........................................................1

KDL-55W900A ii

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.

An isolation transformer should be used during any service to avoid possible 
shock hazard, in case of live chassis. 

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 parts list. It is essential that these critical parts 

be replaced only with the part number specified in the 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 warranty.

For safety reasons, component level repair of the Power Supply Boards 
and/or the Inverter Boards is prohibited. 

Replace only with the same or equivalent type. Danger of explosion may 
occur if battery is replaced incorrectly. Exposed battery should not be in 
contact with water.

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. 

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.

Pour  des  raisons  de  sécurité,  Interdire  de  réparer  ou  remplacer  les 
composantes dans les blocs d’alimentation et/ou sur les modules d’inverseur. 

Ne  remplacez  qu’avec  une  pile  de  type  identique  ou  équivalent.  Danger 

d’explosion  si  la  pile  est  remplacée  incorrectement.  La  pile  exposée  ne 
devrait pas être mise en contact avec de l’eau.

KDL-55W900A iii

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 in “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.  

Follow the manufacturers’ instructions provided with the tester.

2.  A battery-operated AC milliammeter. 

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. Nearly all 
battery-operated digital multimeters that have a 2 VAC range are 
suitable. (see Figure A)

Figure A. Use an AC voltmeter to check AC leakage.

The cover-plate retaining screw on most AC outlet boxes is at earth ground. 
Verify the AC outlet box retaining screw ground by connecting a 60W to 

100W incandescent (not a neon or fluorescent 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)

Figure B. Checking for earth ground.

Trouble Light

AC Outlet Box

KDL-55W900A 1

Television system

Channel coverage

Panel system
Speaker output

CABLE/ANTENNA

HDMI IN  1/2/3/4

Video (2D): 1080p (30, 60 Hz), 1080/24p, 1080i (60 Hz), 720p (30, 60 Hz), 720/24p, 480p, 480i, 

                       PC Formats

Analog terrestrial: 2 - 69 / Digital terrestrial: 2 - 69

Analog Cable: 1 - 135 / Digital Cable: 1 - 135

LCD (Liquid Crystal Display) Panel

10 W + 10 W 

75-ohm external terminal for RF inputs

VIDEO IN 1

COMPONENT IN

VIDEO IN 2

MHL

(common with HDMI IN 2)

Video (3D):

Side-by-Side 1080/24p, 1080i (60 Hz), 720p (60 Hz)

Over-Under 1080p (30 Hz), 1080/24p, 1080i (60 Hz), 720p (60 Hz)

Audio: Two channel linear PCM: 32, 44.1 and 48 kHz, 16, 20 and 24 bits, Dolby Digital

AUDIO OUT

Stereo mini jack

DIGITAL AUDIO OUT 

(OPTICAL)

Digital optical jack (Two channel linear PCM, Dolby Digital)

LAN

USB/DLNA

Refer to the i-Manual for supported formats

NTSC: American TV standard

ATSC (8VSB terrestrial): ATSC compliant 8VSB

QAM on cable: ANSI/SCTE 07 2000 (Does not include CableCARD functionality)

Video / Audio input (phono jacks)

YP

B

P

R

 (Component Video): 1080p (60 Hz), 1080i (60 Hz), 720p (60 Hz), 480p, 480i

Audio input (phono jacks)
Video input (common phono pin with Y input)

10BASE-T/100BASE-TX connector (Connection speed may differ depending on the network environment. 

10BASE-T/100BASE-TX communication rate and communication quality are not guaranteed for this TV)

REMOTE

RS232C, Serial Control mini jack; IR IN mini jack. These jacks are for receiving the external control signal

Operating Temperature

32 ºF – 104 ºF (0 ºC – 40 ºC)

Video (3D):

Frame Packing: 1080p (30 Hz), 1080/24p, 1080i (60 Hz), 720p (30, 60 Hz), 720/24p

Side-by-Side 1080p (60 Hz), 1080/24p, 1080i (60 Hz), 720p (60 Hz)

Over-Under 1080p (30, 60 Hz), 1080/24p, 1080i (60 Hz), 720p (60 Hz)

Audio: Two channel linear PCM: 32, 44.1 and 48 kHz, 16, 20 and 24 bits, Dolby Digital

ARC (Audio Return Channel) (HDMI IN 1 only)

Video (2D): 1080p (30 Hz), 1080/24p, 1080i (60 Hz), 720p (30, 60 Hz), 720/24p, 480p,480i

Power requirement
Power

consumption

in use
in standby

Screen Size*

54.6 inches 

      (55 class)

(inches measured diagonally)
Display resolution

Dimensions

 

110-240 V AC, 60 Hz 

Less than 0.15 W with 120 V AC and less than 0.3 W with 240 V AC

1,920 dots (horizontal) × 1,080 lines (vertical)

 

152 W

with stand

1,241 ×  756  ×  298

 (mm)

1,241 ×  723 ×  61 

wall-mount 

hole pattern

300 × 300

wall-mount 

screw size

M6 (8-12 mm)

Peso*

with stand

(kg)/(lb)

without stand

(kg)/(lb)

22.0 / 48.5

19.7 / 43.4

(mm)

(mm)

Active 3D Glasses: TDG-BT500A

Optional accessories

without stand 

Connecting Cables

Support Belt Kit

Camera and Microphone Unit: CMU-BR200/CMU-BR100

USB Wireless LAN Adapter: UWA-BR100

*  Screen size, dimensions and mass are approximate values.

•

Optional accessories availability depends on countries/region/TV model/stock.

•

Design and specifications are subject to change without notice.

*

- Remote Control (1)*

1

- One-Touch Remote Control (1)

- Size AAA Batteries (4)

- Table-Top Stand (1)

- Fixing Screws for Table-Top Stand (M5 x 16) (4) 

- Assembling Screws for Table-Top Stand (M5 x 16) (3)

- Active 3D Glasses (Battery Included) (4)

*

1

Please refer to the model name printed on the

remote control.

*

2

Assembling the Table-Top Stand is required.

Refer to the supplied Table-Top Stand leaflet to

assemble the Table-Top Stand.

- Operating Instructions and Other Documents

*

1

*

2