Sony AZ2EK, KDL-26BX320, KDL-26BX321, KDL-32BX320, KDL-32BX321 Service Manual [en, fr]

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Page 1

SERVICE MANUAL

Version Date Subject

1.0 4/2011 Original manual issue.

2.0 5/2011 Add Missing Screw Part Number Information.

LCD Digital Color TV

9-888-441-02

HISTORY INFORMATION FOR THE FOLLOWING MANUAL:

ORIGINAL MANUAL ISSUE DATE: 4/2011

AZ2EK CHASSIS

Segment: P-2F

KDL-26/32/37/40BX320,321,420 (AEP/UK)

S/N range 6,000,001-6,999,999 (WS)

Page 2

SERVICE MANUAL

LCD Digital Color TV

AZ2EK CHASSIS

Segment: P-2F

9-888-441-02

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KDL-26/32/37/40BX320,321,420(AEP/UK)

MODEL LIST

MODEL COLOR COMMANDER DEST.MODEL COLOR COMMANDER DEST.

KDL-26BX320 Black RM-ED046 AEP/UK KDL-26BX321 Black RM-ED046 AEP/UK

KDL-32BX320 Black RM-ED046 AEP/UK KDL-32BX321 Black RM-ED046 AEP/UK KDL-32BX420 Black RM-ED046 AEP

KDL-37BX420 Black RM-ED046 AEP

KDL-40BX420 Black RM-ED046 AEP/UK

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KDL-26/32/37/40BX320,321,420(AEP/UK)

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 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.

CARRYING THE TV

Be sure to follow these guidelines to protect your property and avoid causing serious injury.

• Carry the TV with an adequate number of people; larger size TVs require two or more people.

• Correct hand placement while carrying the TV is very important for safety and 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 in this manual. Follow these procedures whenever critical components are replaced or improper operation is suspected.

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KDL-26/32/37/40BX320,321,420(AEP/UK)

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 u tilisé lors de tout dépannage. Le chássis de ce récepteur est directement raccordé à l’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 u tilise 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 composants critiques, ou lorsqu’un mauvais fonctionnement suspecte.

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KDL-26/32/37/40BX320,321,420(AEP/UK)

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 frame edge 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 highhumidity 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 power when replacing the backlight (CCFL) or inverter circuit. (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 inverter circuit. 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.

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KDL-26/32/37/40BX320,321,420(AEP/UK)

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.

8. For safety reasons, repairing the Power board and/or Inverterboard is prohibited.

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KDL-26/32/37/40BX320,321,420(AEP/UK)

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 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 Dat a 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).

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KDL-26/32/37/40BX320,321,420(AEP/UK)

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 of the problem areas. 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 probable source of the problem. A definition of the STANDBY LED flash indicators is listed in the instruction manual for 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 memory to reveal past problems and how often these problems occur.

STBY LED

Fla sh time

Service menu Item

name

(Screen Dis play )

Diagnostic Item Descrip tion

2 M AIN_P OWE Main Power Over Voltage Protection

DC_ALERT1 DC_ALERT

A UDIO_PROT Audio Abnormal Detection

4 BALANC ER_ERR Not used

TCO N_ERR Not used

PANEL_ID__NVM_ERR Panel ID NVM Error 6 BACKLITE_ERR Back Light Error (Panel Inv erter) 7

TEMP_ERR Thermal Error 8 - Not used 9 - Not used

10 - Not used 11 - Not used 12 - Not used

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, it is 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:

* : Note that this differs from entering the service mode (volume +)

Info TV POWERChannel Volume

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KDL-26/32/37/40BX320,321,420(AEP/UK)

SELFCHECK

BACK << 002MAIN_POWER 000 003DC_ALERT1 000 003AUDIO_PROT 000 004BALANCER_ERR 000 005TCON_ERR 000 005PANEL_ID_NVM_ERR 000 006BACKLITE_ERR 000 007TEMP_ERR 000

12345‐67891‐23456

[Home]Exit

SELF DIAGNOSIS FUNCTION

[SELF DIAGNOSTIC SAMPLE SCREEN DISPLAY]

Error count

Item name

STBY LED flash time

Total operation time by hour

Boot count

Panel operation time by hour

Since the diagnostic results displayed on the screen are not automatically cleared, always check the self-diagnostic screen . After you have completed the repairs, clear the result display to “0”.

Clearing the Self Check Diagnostic List

1. Error history and Error count : Press the Channel 8 => Channel 0 .

2. Panel operation time : Press the Channel 7 => Channel 0 .

Exiting the Self-diagnostic screen

To exit the Self Diagnostic screen, turn off the power to the TV by pressing the POWER button on the remote or the POWER button on the TV.

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KDL-26/32/37/40BX320,321,420(AEP/UK)

• Items with no part number and no description are not stocked because they are seldom required for roution service.

• The construction parts of an assembled part are indicated with a collation number in the remark colum.

• Items marked " * " are not stocked since they are seldom required for routine service. Some delay should be anticipated when ordering these items.

SEC 1. DISASSEMBLY AND PARTS LIST

IMPORTANT: When replacing LCD Panel or Circuit Boards ensure that all Radiation Sheets and Insulation Sheets are in their

correct positions in the TV set.

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KDL-26/32/37/40BX320,321,420(AEP/UK)

REF. No . PART No . DES CR IPTIO N REMARK

1 WS0020401 REA R COVER (GW26) 2 WS0018201 COVER, NECK (M3B)

3 WS0018101 NECK (M3B) 4 WS0017601 BA S E ( M3B) A S S Y BX320

WS0017701 BA S E ( M5B) A S S Y BX321

WS0030801 SCREW + B VTP2 4X16 WS0010101 SCREW + B VTP 3X12 TY P E2 IT-3 WS0002901 SCREW, +PSW M5X16

WS0018001 SCREW, +PSW M4X10

1-1. KDL-26BX320/321

1-1-1. REAR COVER ASSY AND STAND BLOCK

1-1-2. NECK COVER, NECK AND BASE ASSY

DISASSEMBLY AND PARTS LIST

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KDL-26/32/37/40BX320,321,420(AEP/UK)

REF. No. PART No . DES CRIPT ION REMARK

11 WS0016001 SWIT CH UNIT 12 WS0015801 STA TIC CONVERTER ( TV)- G13 13 WS0020001 BRACKE T, V ESA (GW26) 14 WS0019701 CONNECTO R ASSY 26 FFC WXG A EU 15 WS0016301 MOUNTED PWB A 16 WS0017001 BRACKE T, SIDE (EU) (G W) 17 WS0020501 POWER SUPPLY CORD (WIT H CORE) 18 WS0018301 COVE R, UNDER (GW26) 19 WS0019601 LOUDSPEAKER (4X10CM) 20 WS0020101 BRACKE T, SP (GW26R) 21 WS0020201 BRACKE T, SP (GW26L)

WS0020 701 SCREW, + P S W M3X8 WS0030 801 SCREW +BVTP2 4 X16 WS0010 101 SCREW +BVTP 3X12 TYPE2 I T-3 WS0018 001 SCREW, + P S W M4X10 WS0030 701 SCREW, + P S W M4X8

DISASSEMBLY AND PARTS LIST

1-1. KDL-26BX320/321

1-1-4. SPEAKER BRACKET AND SPEAKER

1-1-3. G13 BOARD, A BOARD, SWITCH UNIT, VESA BRACKET AND

SIDE BRACKET

BOTTOM FRAME

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KDL-26/32/37/40BX320,321,420(AEP/UK)

REF. No. PART No . DES CRIPT ION REMARK

31 WS0016901 PA NEL SUPPORT (A ) 32 1-811-375-11 LCD PANEL (A 26V7) 33 WS0020301 BEZEL (GW26) 34 WS0016501 MOUNTED PWB H

DISASSEMBLY AND PARTS LIST

1-1. KDL-26BX320/321

1-1-5. PANEL SUPPORT, H BOARD, LCD PANEL AND BEZEL ASSY

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KDL-26/32/37/40BX320,321,420(AEP/UK)

REF. No . PART No . DES CRIP T ION REMARK

1 WS0018701 REA R COVER ( GW32) 2 WS0018801 BRA CK E T, VE S A (M 6) ( GW) 3 WS0018201 COVER, NECK (M3B) 4 WS0018101 NECK (M3B) 5 WS0017601 BA S E ( M3B) ASSY BX320,420

WS0017701 BA S E ( M5B) ASSY BX321

WS0030801 SCREW + B VTP2 4X16 WS0031101 SCREW, M3X12L WS0010101 SCREW + B VTP 3X12 TYPE2 IT-3 WS0002901 SCREW, +PSW M5X16 WS0018001 SCREW, +PSW M4X10

1-2. KDL-32BX320/321, BX420

1-2-1. REAR COVER ASSY AND STAND BLOCK

1-2-2. VESA BRACKET, NECK COVER, NECK AND BASE ASSY

DISASSEMBLY AND PARTS LIST

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KDL-26/32/37/40BX320,321,420(AEP/UK)

REF. No. PART No . DES CRIPT ION REMARK

11 WS0016001 SWIT CH UNIT 12 WS0015801 STA TIC CONVERTER ( TV)- G13 13 WS0016701 CONNECTO R ASSY 32 FFC WXG A EU BX3 20,321

WS0016 801 CONNECTOR ASS Y 32 FF C FHD EU BX420

14 WS0016301 MOUNTED P W B A BX 320,321

WS0016 401 MOUNTED PWB A BX420 15 WS0017001 BRACKE T, SIDE (EU) (G W) 16 WS0019301 POWER SUPPLY CORD (WIT H CORE) 17 WS0018301 COVE R, UNDER (GW26) 18 WS0017101 BRACKE T, V ESA (GW32) 19 WS0016601 LOUDSPEAKER (4X10CM) 20 WS0018401 BRACKE T, SP (GW32R) 21 WS0018501 BRACKE T, SP (GW32L)

WS0020 701 SCREW, + P S W M3X8

WS0030 801 SCREW +BVTP2 4X16

WS0010 101 SCREW +BVTP2 3X12

WS0030 701 SCREW, + P S W M4X8

DISASSEMBLY AND PARTS LIST

1-2. KDL-32BX320/321, BX420

1-2-4. VESA BRACKET, BOTTOM FRAME AND H BOARD

1-2-3. G13 BOARD, A BOARD, SWITCH UNIT AND SIDE BRACKET

BOTTOM FRAME

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KDL-26/32/37/40BX320,321,420(AEP/UK)

REF. No. PART No . DES CRIPT ION REMARK

31 WS0016901 PA NEL SUPPORT (A ) 32 1-811-376-11 LCD PANEL (A 32VE) BX320,321

1-811-377-11 LCD PANEL (A32VC) BX420 33 WS0018601 BEZEL (GW32)

34 WS0016501 MOUNTED PWB H

DISASSEMBLY AND PARTS LIST

1-2. KDL-32BX320/321, BX420

1-2-5. PANEL SUPPORT, H BOARD, LCD PANEL AND BEZEL ASSY

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KDL-26/32/37/40BX320,321,420(AEP/UK)

REF. No .

PART No. DESCRIPTION

REMARK

1 WS0023001 REAR COV E R ( GW37) 2 WS0018801 BRACKET, V ESA (M6) (GW) 3 WS0022501 COVER, NECK ( ML3B) 4 WS0022401 NECK ( ML3B)

5 WS0022301 BASE STAND (ML3B)

WS0002 901 SCREW, + P S W M5X16

WS0030 701 SCREW, + P S W M4X8

WS0031 201 SCREW, T4X25L

WS0010 101 SCREW, + B VTP2 3X12

WS0018 001 SCREW, + P S W M4X10

1-3. KDL-37BX420

1-3-1. REAR COVER ASSY AND STAND BLOCK

1-3-2. VESA BRACKET, NECK COVER, NECK AND BASE ASSY

DISASSEMBLY AND PARTS LIST

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KDL-26/32/37/40BX320,321,420(AEP/UK)

REF. No . PART No . DESCRIPT ION REMARK

11 WS0016001 SWITCH UNIT 12 WS0022101 STA T IC CONV E RTER (TV)-G14 13 WS0022201 CONNECTO R ASSY 37 FFC F HD 14 WS0016401 MOUNTED PWB A 15 WS0017001 BRACKE T, SIDE ( E U) ( GW) 16 WS0023101 POWER SUP P LY CORD (W ITH CORE) 17 WS0022601 COVE R, UNDER (GW 37)

18 WS0022801 BRACKET, SP (GW37L) 19 WS0016601 LOUDSPEAKER (4X10CM) 20 WS0022701 BRACKE T , SP (GW37R)

WS0020701 SCREW, + P S W M3X8

WS0030801 SCREW, + B VTP2 4X16

WS0010101 SCREW +BVTP2 3X12

WS0030701 SCREW, + P S W M4X8

WS0018001 SCREW, + P S W M4X10

DISASSEMBLY AND PARTS LIST

1-3. KDL-37BX420

1-3-4. BOTTOM FRAME AND SPEAKER

1-3-3. G13 BOARD, A BOARD, SWITCH UNIT AND SIDE BRACKET

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KDL-26/32/37/40BX320,321,420(AEP/UK)

REF. No .

PART No. DESCRIPTION

REMARK

31 WS0016901 PA NEL SUPPORT (A ) 32 1-811-374-11 LCD PANEL (C37H4-L01) 33 WS0022901 BEZEL (GW37) 34 WS0016501 MOUNTED PWB H

WS0030 701 SCREW, + P S W M4X8

WS0031 201 SCREW, T4X25L

DISASSEMBLY AND PARTS LIST

1-3. KDL-37BX420

1-3-5. PANEL SUPPORT, H BOARD, LCD PANEL AND BEZEL ASSY

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KDL-26/32/37/40BX320,321,420(AEP/UK)

REF. No .

PART No. DESCRIPTION

REMARK

1 WS0024001 REAR COV E R ( GW40) 2 WS0018801 BRACKET, V ESA (M6) (GW) 3 WS0022501 COVER, NECK ( ML3B) 4 WS0022401 NECK ( ML3B) 5 WS0022301 BASE STAND (ML3B)

WS0030 801 SCREW +B VTP2 4X16

WS0010 101 SCREW +B VTP 3X12 TYPE2 IT-3

WS0002 901 SCREW, + P S W M5X16

WS0030 701 SCREW, + P S W M4X8

1-4. KDL-40BX420

1-4-1. REAR COVER ASSY AND STAND BLOCK

1-4-2. VESA BRACKET, NECK COVER, NECK AND BASE ASSY

DISASSEMBLY AND PARTS LIST

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KDL-26/32/37/40BX320,321,420(AEP/UK)

REF. No. PART No . DES CRIPT ION REMARK

11 WS0016001 SWIT CH UNIT 12 WS0022101 STA TIC CONVERTER ( TV)- G14 13 WS0023301 CONNECTO R ASSY 40 FFC FHD 14 WS0016401 MOUNTED PWB A 15 WS0017001 BRACKE T, SIDE (EU) (G W) 16 WS0024101 POWER SUPPLY CORD (WIT H CORE) 17 WS0022601 COVE R, UNDER (GW37) 18 WS0023801 BRACKE T, SP ( GW40L) 19 WS0016601 LOUDSPEAKER (4X10CM) 20 WS0023701 BRACKE T, SP ( GW40R)

WS0020 701 SCREW, + P S W M3X8

WS0030 801 SCREW +BVTP2 4X16

WS0010 101 SCREW +BVTP2 3X12

WS0018 001 SCREW, + P S W M4X10

DISASSEMBLY AND PARTS LIST

1-4. KDL-40BX420

1-4-4. BOTTOM FRAME AND SPEAKER

1-4-3. G13 BOARD, A BOARD, SWITCH UNIT AND SIDE BRACKET

BOTTOM FRAME

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KDL-26/32/37/40BX320,321,420(AEP/UK)

DISASSEMBLY AND PARTS LIST

1-4. KDL-40BX420

1-4-5. PANEL SUPPORT, H BOARD, LCD PANEL AND BEZEL ASSY

REF. No .

PART No. DESCRIPTION

REMARK

31 WS0016901 PA NEL SUPPORT (A ) 32 1-811-329-11 LCD PANEL (S40ESP) 33 WS0023901 BEZEL (GW40) 34 WS0016501 MOUNTED PWB H

WS0030 801 SCREW +BVTP2 4X16

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KDL-26/32/37/40BX320,321,420(AEP/UK)

DISASSEMBLY AND PARTS LIST

1-5-1. MISCELLANEOUS

WS0030501 BAG ASSY, SCREW (B) - (Contains Screw Part Numbers: WS0002901(4 pcs) & WS 0018001(3 pc s))

1-5-2. ACCESSORI ES

* WS0019001 MANUAL, INSTRUCTION * WS0019101 MANUAL, INSTRUCTION * WS0019201 MANUAL, INSTRUCTION

WS0015901 REM OTE COM M A NDE R (RM-E D046)

1-5. OTHER PARTS

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KDL-26/32/37/40BX320,321,420(AEP/UK)

SEC 2. ADJUSTMENT

HOW TO ENTERING SERVICE MODE

1) Turn on the main power switch to place this set in standby mode.

2) Press the buttons on the remote commander as follows, and entering service mode.

3) Service mode display.

ServiceMode

StatusInformation >> Selfdiagnosishistory >> PanelSelection <[ SONY_WXGA_32_2]> NO_SIGNAL_MUTE <[ Off ]> TUNINGSYSTEM <[ AUTO ]> LVDSSpectrum(%o) <[ 20 ]> LowofHPD <[ 5 ]>

[</>]Set[Home]Exit

Info TV POWE

Channel Volume

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KDL-26/32/37/40BX320,321,420(AEP/UK)

ADJUSTMENT

4) How to use the remote commander.

5) After entering service mode, then turn off the power switch.

<Info><5><Vol Up><Power>Service mode on

<Other> / <Power off + on>Service mode off

The flow of control

Data Value up / down

Adjustment Item up / down

Function

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KDL-26/32/37/40BX320,321,420(AEP/UK)

SEC 3. DIAGRAMS

3-1. BLOCK DIAGRAM

3-1-1. BLOCK

HDMI Reciever

Demod

Analog Video In

Analog Audio In

HDMI Contro

DRAM Interface

Nand Flash Interface

LVDS

Analog

Video Out

CLK/Crystal

IIS

PWM Audio Out

SPDIF

USB Interface

I2C

UART

Servo ADC

GPIO

Power

DDR

512Mbit

DDR

512Mbit

Flash

512Mbit

USB Current

Limitter

HDMI1

HDMI2

Video1 Comp1

Video2 (Side)

SPDIF

Audio Out

USB

USB_DP USB_DM USB_PWR_EN0 USB_PWR_ERR

AIN1_L/R_AADC AIN2_L/R_AADC AIN3_L/R_AADC AIN6_L/R_AADC

CVBS1 CVBS3 Y0P/PB0P/PR0P/SOY0 Y1P/PB1P/PR1P/SOY1 BP/GP/RP/VSYNC/HSYNC

RX0_0/1/2/C RX1_0/1/2/C

SAW

Filter

ADCINN/P_DEMOD TUNER_DATA/CLK IF_AGC

Crystal

RA*/RBA*/RDQ RDQM*

PDD*/etc

crystal in crystal out

Buffer

H?Board

LED

Light Sensor

Key Pad

Speaker Out

Pa ne

Co ntr ol

T? Co

TCON_RDY

Tx even/odd LVDS_CTRL1 LVDS_CTRL2

VSYNC

V_Sync

LVDS_SEL(FFC:0, othre:1)

PTSI_CLK OPCTRL0 OPCTRL1 OPCTRL2 HDMI_HPD2 HDMI_SDA2 HDMI_SCL2

AOMCLK

AOBCK

AOLRCK

AODATA0

Audio

AMP

AL0/AR0_PWMDAC

ASPDIF

EEPROM

128Kbit

DDC_LUT1

DDC_LUT0

DDC_LUT2

Mute

RESET_AMP

AMP_MUTE

OSDA0/

OSCL0

OSDA1/

OSCL1

GPIO0 GPIO1 GPIO2 GPIO3 GPIO4 GPIO5 GPIO6 GPIO7

Temp Sensor

AV_COMP_SEL

ADIN5_SRV ADIN4_SRV ADIN3_SRV ADIN2_SRV

Key Pad

12V_SW Balancer Error 12V_Audio Audio AMP Error T-Con Error 5V Det

Error Detction

12V_S12V

PA NEL _SE

Bal

anc

Err

PANEL_SEL

Po wer Key

Reset

OIRI

PTSI_CLK PTSI_VALID PTSI_SYNC PTSI_D0 ? D7

Po we r / Inv ert er

POWER ON ENABLE

AC OFF DET

LVDS POWR ON

Inverter Dimming

EEPROM

RST

Keep 100ms or more

3.3STBY

OSDA0/OSCL0

OSDA0 /OSCL0

DD & LDO

AVDD12(1.2V) AVDD33(3.3V) VCCK(1.0V) VCC2IO(1.8V)

HDMI_SDA0/SCL0 HDMI_HPD0/1/2 PWR5V_0/1/2 HDMI_CEC

Page 28

KDL-26/32/37/40BX320,321,420(AEP/UK)

3-1. BLOCK DIAGRAM

3-1-2. RESET/I2C & UART

DIAGRAMS

HDMI2

HDMI_SCL1/HDMI_SDA1

D-SUB15

For Debug

U0TX U0RX

Tuner

HDMI1

OSDA0/OSCL0

OSDA1/OSCL1

TUNER_CLK/TUNER_DATA

HDMI_SCL0/HDMI_SDA0

Audio AMP

T-ConEEPROM

Temp

Sensor

Light

Sensor

3V3_SW

5V_TUNER

3V3_SW

UART

I2C

3V3_SW

MT5388

Reset IC

Flash

512Mbit

Audio

AMP

EEPROM

WS#

ORESET#

USB OCP

USB_PWR_EN

RESET_AMP

GPIO_7

MT5388

Page 29

KDL-26/32/37/40BX320,321,420(AEP/UK)

DIAGRAMS

3-2-1. KDL-26BX320/321

T-CON Board

Panel

CN1

CN202

CN8156

CN13

CN17

CN9101 IR board

Key Pad board

CN6401

G13

Power Board

Inverter

CN6402

Main board

3-2. CONNECTOR DIAGRAM

Page 30

KDL-26/32/37/40BX320,321,420(AEP/UK)

DIAGRAMS

3-2-2. KDL-32BX320/321

T-CON Board

Panel

CN1

CN202

CN8156

CN13

CN17

CN9101 IR board

Key Pad board

CN6401

G13

Power Board

Inverter

CN6402

Main board

Page 31

KDL-26/32/37/40BX320,321,420(AEP/UK)

DIAGRAMS

3-2-3. KDL-32BX420

T-CON Board

Panel

CN2

CN202

CN8156

CN13

CN17

CN9101 IR board

Key Pad board

CN6401

G13

Power Board

Inverter

CN6402

Main board

Page 32

KDL-26/32/37/40BX320,321,420(AEP/UK)

DIAGRAMS

3-2-4. KDL-37/40BX420

T-CON Board

Panel

CN2

CN202

CN8156

CN13

CN17

CN9101 IR board

Key Pad board

CN6401

G14

Power Board

Inverter

CN6402

Main board

Page 33

KDL-26/32/37/40BX320,321,420(AEP/UK)

DIAGRAMS

3-3. CIRCUIT BOARDS LOCATION

Switch Unit

KDL-26BX320/321

KDL-32BX320/321/420

KDL-40BX420

A Board

H Board

G13 Board

G14Board

H Board

A Board

Switch Unit

G13 Board

H Board

KDL-37BX420

G14Board

A Board

Switch Unit

H Board

Page 34

KDL-26/32/37/40BX320,321,420(AEP/UK)

END

9-888-441-02

English

11EP7100-1

Made in U.K.

Sony Corporation

Sony UK

Service Promotions Dept.