Sony KDL-32EX500 - Bravia Ex Series Lcd... User manual

KDL-32/37/40/46/55EX500
Series(AEP/UK)
AZ1-LCHASSIS
Segment: 3a-1
SERVICE MANUAL
HISTORY INFORMATION FOR THE FOLLOWING MANUAL:
ORIGINAL MANUAL ISSUE DATE: 1/2010
Version Date Subject
1.0 1/2010 No revisions or updates are applicable at this time.
2.0 2/2010 Amend 32”(P.42) & 37”(P.45) EX504 ‘BAL’ board part number.
3.0 5/2010 Add updated Panel Caution Note (P.6).
Add Inverterand Tcon Board Part Numbers (P.42,45,48,51,54). Add illustration showing location of neck to base screws (P.43,46,49,52,55).
Add ‘Support, Panel’ Part Numbers (P.41,44,47,50,53).
4.0 6/2010 Add ‘Hotel Assy’ to Exploded Views (P.41,44,47,50,53).
Add ‘Hotel Addendum’for B2B Models (P.59).LCD Digital Color TV
9-888-265-04

KDL-32/37/40/46/55EX500
Series(AEP/UK)
SERVICE MANUAL
LCD Digital Color TV
AZ1-LCHASSIS
Segment: 3a-1
9-888-265-04

KDL-32/37/40/46/55EX500 Series(AEP/UK) 3
MODEL LIST
MODEL COLOR COMMANDER DEST.MODEL COLOR COMMANDER DEST.
KDL-32EX500 Black RM-ED035 AEP
KDL-32EX501 Black RM-ED035 AEP
KDL-32EX503 Black RM-ED035 UK
KDL-32EX504 Black RM-ED035 AEP
KDL-32EX505 Black RM-ED035 AEP
KDL-32EX508 Black RM-ED033 AEP
KDL-37EX500 Black RM-ED035 AEP
KDL-37EX503 Black RM-ED035 UK
KDL-37EX504 Black RM-ED035 AEP
KDL-37EX505 Black RM-ED035 AEP
KDL-40EX500 Black RM-ED035 AEP
KDL-40EX501 Black RM-ED035 AEP
KDL-40EX503 Black RM-ED035 UK
KDL-40EX505 Black RM-ED035 AEP
KDL-40EX508 Black RM-ED033 AEP
KDL-46EX500 Black RM-ED035 AEP
KDL-46EX501 Black RM-ED035 AEP
KDL-46EX503 Black RM-ED035 UK
KDL-46EX505 Black RM-ED035 AEP
KDL-55EX500 Black RM-ED035 AEP
KDL-55EX503 Black RM-ED035 UK
KDL-55EX505 Black RM-ED035 AEP

KDL-32/37/40/46/55EX500 Series(AEP/UK) 4
WARNINGS AND CAUTIONS -ENGLISH
CAUTION
These servicing instructions are for use by qualified service personnel only.
To reduce the risk of electric shock, do not performany servicing other than thatcontained in the operating instructions unless you are qualified to
do so.
WARNING!!
An isolation transformer should be used during any service toavoid possible shock hazard, because of live chassis.
The chassis of this receiver is directlyconnected to the ac power line.
CARRYING THE TV
Be sure to follow these guidelines to protect your property and avoid causing serious injury.
•Carry the TV with an adequatenumber of people; larger size TVs require two or more people.
•Correct hand placement while carrying the TV isvery important for safetyand to avoid damages.
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 inthis manual. Follow these procedures whenever critical components are replaced or
improper operation is suspected.

KDL-32/37/40/46/55EX500 Series(AEP/UK) 5
WARNINGS AND CAUTIONS -FRENCH
ATTENTION!!
Ces instructions de service sont à l’usage du personnel de service qualifi é 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 qualifi é
faire ainsi.
WARNING!!
Afi n 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 àl’alimentation du secteur.
POUR TRANSPORTER LE TÉLÉVISEUR
Tenez compte de ce qui suit pendant l’installation du téléviseur :
•Débranchez tous les câbles avant de transporter le téléviseur.
•Transportez le téléviseur avec le nombre de personnes approprié ; un téléviseur de grande taille doit être transporté par au moins deux personnes.
•Lors du transport du téléviseur, l’emplacement des mains est très important pour votre sécurité, ainsi que pour éviter de causer des dommages.
ALERTE!!
Afi n d’eviter tout risque d’electrocution provenant d’un chassis sous tension, un transformateur d’isolement doit etre utilise lors de tout
depannage. Le chassis de ce recepteur est directement raccorde a l’alimentation du secteur.
ATTENTION AUX COMPOSANTS RELATIFS A LA SECURITE!!
Les composants identifi es 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 identifi es dans le present manuel. Suivre ces procedures lors de chaque remplacement de composantscritiques, ou lorsqu’un
mauvais fonctionnement suspecte.

KDL-32/37/40/46/55EX500 Series(AEP/UK) 6
WARNINGS AND CAUTIONS
USE CAUTION WHEN HANDLING THE LCD PANEL When repairing the LCD panel, be sure you are grounded by using a wrist band.
When repairing the LCD panel on the wall, the LCD panel must be secured using the 4 mounting holes on the rear cover.
1) Do not press on the panel or frameedge to avoid the risk of electric shock.
2) Do not scratch or press on the panel with any sharp objects.
3) Do not leave the module in high temperatures or in areas of high humidity for an extended period of time.
4) Do not expose the LCD panel to direct sunlight.
5) Avoid contact with water. It may cause a short circuit within the module.
6) Disconnect the AC powerwhen replacing the backlight (CCFL) or invertercircuit. (High voltage occurs at the inverter circuit at 650Vrms.)
7) Always clean the LCD panel with a soft cloth material.
8) Use care when handling the wires or connectors of the invertercircuit. Damaging the wires may cause a short.
9) Protect the panel from ESD to avoid damaging the electronic circuit (C-MOS).
10) It is recommended not to exceed 1 hour of Power-On nor Burn-in period with LCD panel face down condition, in repair activity.

KDL-32/37/40/46/55EX500 Series(AEP/UK) 7
SAFETY CHECK-OUT
After correcting the original service problem, performthe 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 thatall 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 unauthorizedreplacement parts, particularly transistors, that were installed during a
previous repair. Point themout to the customer and recommend their replacement.
5. Look for parts which, though functioning, show obvious signs of deterioration. Point themout
to the customerand 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.
8. For safety reasons, repairing the Power board and/or Inverter board is prohibited.

KDL-32/37/40/46/55EX500 Series(AEP/UK) 8
SAFETY CHECK-OUT
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 returnto 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 accuratelow
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).
Howto Find a Good Earth Ground
A cold-waterpipe 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 itis 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 normalbrilliance ifthe screw is at ground
potential (see Figure B).

KDL-32/37/40/46/55EX500 Series(AEP/UK) 9
SELF DIAGNOSIS FUNCTION DIAGNOSTIC TEST INDICATORS
When an error occurs, the STANDBY LED will flash a set number of times to indicate the possible cause of the problem.
If there is more than one error, the LED will identify the first ofthe
problemareas.
Result for all of the following diagnostic items are displayed on
screen. If the screen displays a “0”, no error has occurred .
The units in this manual contain a self-diagnostic function. If an error occurs, the STANDBY LED will automatically begin to flash.
The number of times the LED flashes translates to a probablesource of the problem.
A definition of the STANDBY LED flash indicators is listed in the instruction manualfor the user’s knowledge and reference.
If an error symptom cannot be reproduced, the remote commander can be used to review the failure occurrence data stored in memoryto reveal past
problems and how often these problems occur.
STBYLED
Flash time Servicemenu Itemname
(ScreenDisplay)Diagnostic ItemDescription
2MAIN_POWEMain Power Over Voltage Protection
DC_ALERTDC_ALERT
DTT_WDTDTT Error
AUD_PROTAudioAbnormalDetection
4BALANCER_PanelBalancerError
TCON_ERR T-CONError
HFR_ERR HFRError
P_ID_ERR Panel IDNVMError
6BACKLITE_Back LightError (Panel Inverter)
TEMP_ERR ThermalError
FAN_ERRFANError (NotDetected. DisplayOnly)
8-Notused
9-Notused
10 -Notused
11 -Notused
12 -Notused
-RGB_SEN RGB Sensor ACK Error
3 5 7

KDL-32/37/40/46/55EX500 Series(AEP/UK) 10
SELF DIAGNOSIS FUNCTION
0.5
0.5 3
DISPLAY OF STANDBY LED FLASH COUNT
SELF-DIAGNOSTIC SCREEN DISPLAY For errors with symptoms such as “power sometimes shuts off” or “screen sometimes goes out” that cannot be confirmed, itis possible to bring up
past occurrences of failure for confirmation on the screen:
[To Bring Up Screen Test] In standby mode, press buttons on the remote commander sequentially in rapid succession as shown below: