SONY 32BX427, KDL 22BX300, 32BX328 Diagram

HISTORY INFORMATION FOR THE FOLLOWING MANUAL:

SERVICE MANUAL

MODEL COMMANDER DESTINATION

KDL-22BX327 RM-YD066 COLUMBIA

KDL-32BX327 RM-YD066 COLUMBIA

KDL-32BX328 RM-YD066 COLUMBIA

KDL-32BX427 RM-YD066 COLUMBIA

KDL-40BX427 RM-YD066 COLUMBIA

AZ2-EK

CHASSIS

LEVEL

CONFIDENTIAL

ELECTRICAL SERVICE MANUAL

INTERNAL ONLY

ORIGINAL MANUAL ISSUE DATE: 3/2011

REVISION DATE SUBJECT

3/11/2011 No revisions or updates are applicable at this time.

LCD DIGITAL COLOR TV

9-888-411-51

KDL-22BX327/32BX327/32BX328/32BX427/40BX427

SECTION TITLE PAGE

Safety-Related Component Warning ............................................................................................................................................................................... 3

Safety Check-Out...............................................................................................................................................................................................................5

SECTION 1: DIAGRAMS ................................................................................................................................................................................................... 6

1-1. Circuit Boards Location ...................................................................................................................................................................................... 6

1-2. Printed Wiring Boards and Schematic Diagrams Information ............................................................................................................................ 7

1-3. Block Diagram .................................................................................................................................................................................................... 9

1-4. Connector Diagrams ........................................................................................................................................................................................10

1-5. Schematics and Supporting Information ..........................................................................................................................................................14

A Board Schematic Diagram (Page 1 of 18) .................................................................................................................................................... 14

A Board Schematic Diagram (Page 2 of 18) .................................................................................................................................................... 15

A Board Schematic Diagram (Page 3 of 18) .................................................................................................................................................... 16

A Board Schematic Diagram (Page 4 of 18) .................................................................................................................................................... 17

A Board Schematic Diagram (Page 5 of 18) .................................................................................................................................................... 18

A Board Schematic Diagram (Page 6 of 18) .................................................................................................................................................... 19

A Board Schematic Diagram (Page 7 of 18) .................................................................................................................................................... 20

A Board Schematic Diagram (Page 8 of 18) .................................................................................................................................................... 21

A Board Schematic Diagram (Page 9 of 18) .................................................................................................................................................... 22

A Board Schematic Diagram (Page 10 of 18) .................................................................................................................................................. 23

A Board Schematic Diagram (Page 11 of 18) .................................................................................................................................................. 24

A Board Schematic Diagram (Page 12 of 18) .................................................................................................................................................. 25

A Board Schematic Diagram (Page 13 of 18) .................................................................................................................................................. 26

A Board Schematic Diagram (Page 14 of 18) .................................................................................................................................................. 27

A Board Schematic Diagram (Page 15 of 18) .................................................................................................................................................. 28

A Board Schematic Diagram (Page16 of 18) ................................................................................................................................................... 29

A Board Schematic Diagram (Page 17 of 18) .................................................................................................................................................. 30

A Board Schematic Diagram (Page 18 of 18) .................................................................................................................................................. 31

GD8 Board Schematic Diagram (KDL-22BX327 Only) (Page 1 of 2) .............................................................................................................. 33

GD8 Board Schematic Diagram (KDL-22BX327 Only) (Page 2 of 2) .............................................................................................................. 34

G13 Board Schematic Diagram (KDL-32BX327/32BX328/32BX427 Only) ..................................................................................................... 36

G14 Board Schematic Diagram (KDL-40BX427 Only) ..................................................................................................................................... 38

H Board Schematic Diagram ............................................................................................................................................................................ 40

SECTION 2: ELECTRICAL PARTS LIST ........................................................................................................................................................................ 42

APPENDIX A: ENCRYPTION KEY COMPONENTS ..................................................................................................................................................... A-1

KDL-22BX327/32BX327/32BX328/32BX427/40BX427

SAFETY-RELATED COMPONENT WARNING

There are critical components used in LCD color TVs that are important for safety. These components are identied 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 specied in the electrical parts list to prevent electric shock, re, 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:

Údo not press on the panel or frame edge to avoid the risk of electric shock. Ú do not scratch or press on the panel with any sharp objects. Ú do not leave the module in high temperatures or in areas of high humidity for an extended period of time. Ú do not expose the LCD panel to direct sunlight. Ú avoid contact with water. It may cause a short circuit within the module. Ú disconnect the AC adapter when replacing the backlight (CCFL) or inverter circuit.

(High voltage occurs at the inverter circuit at 650Vrms.)

Ú always clean the LCD panel with a soft cloth material. Ú use care when handling the wires or connectors of the inverter circuit. Damaging the wires may cause a short. Ú protect the panel from ESD to avoid damaging the electronic circuit (C-MOS).

LEAKAGE CURRENT HOT CHECK CIRCUIT

KDL-22BX327/32BX327/32BX328/32BX427/40BX427

e 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

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 :

r e b m u n t r a P r e t e m a i D s k r a m e R

9 1 - 5 0 0 - 0 4 6 - 7 m m 3 . 0 g K 5 2 . 0

0 2 - 5 0 0 - 0 4 6 - 7 m m 4 . 0 g K 0 5 . 0

1 2 - 5 0 0 - 0 4 6 - 7 m m 5 . 0 g K 0 5 . 0

2 2 - 5 0 0 - 0 4 6 - 7 m m 6 . 0 g K 5 2 . 0

3 2 - 5 0 0 - 0 4 6 - 7 m m 8 . 0 g K 0 0 . 1

4 2 - 5 0 0 - 0 4 6 - 7 m m 0 . 1 g K 0 0 . 1

5 2 - 5 0 0 - 0 4 6 - 7 m m 2 . 1 g K 0 0 . 1

6 2 - 5 0 0 - 0 4 6 - 7 m m 6 . 1 g K 0 0 . 1

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.

KDL-22BX327/32BX327/32BX328/32BX427/40BX427

SAFETY CHECK-OUT

To Exposed Metal

KDL-22BX327/32BX327/32BX328/32BX427/40BX427

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.

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).

Leakage Test

0.15 µF

Figure A. Using an AC voltmeter to check AC leakage. Figure B. Checking for earth ground.

Parts on Set

Earth Ground

Trouble Light

AC Voltmete (0.75V)

AC Outlet Box

Ohmmeter

Cold-water Pipe

KDL-22BX327/32BX327/32BX328/32BX427/40BX427

1-1. CIRCUIT BOARDS LOCATION

KDL-22BX327/32BX327/32BX328/32BX427/40BX427

SECTION 1: DIAGRAMS

SWITCH

UNIT

SWITCH

UNIT

Figure 1-1. KDL-22BX327

GD8

G13

Figure 1-2. KDL-32BX327/32BX328/32BX427

KDL-22BX327/32BX327/32BX328/32BX427/40BX427

SWITCH

UNIT

G14

Figure 1-3. KDL-40BX427

1-2. PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS INFORMATION

All capacitors are in µF unless otherwise noted. pF : µµF 50WV or less are not indicated except for electrolytics and tantalums.

All electrolytics are in 50V unless otherwise specied.

All resistors are in ohms. kΩ=1000Ω, MΩ=1000kΩ

Indication of resistance, which does not have one for rating electrical power, is as follows: Pitch : 5mm Rating electrical power :

W in resistance, 1/

W and 1/

W in chip resistance.

: nonammable resistor

: fusible resistor

: internal component

: panel designation and adjustment for repair

: earth ground

: earth-chassis

All variable and adjustable resistors have characteristic curve B, unless otherwise noted.

Readings are taken with a color-bar signal input.

Readings are taken with a 10MΩ digital multimeter.

Voltages are DC with respect to ground unless otherwise noted.

Voltage variations may be noted due to normal production tolerances.

All voltages are in V.

S : Measurement impossibility.

: B+line.

: B-line. (Actual measured value may be different).

: signal path. (RF)

Circled numbers are waveform references.

The components identied by shading and ! symbol are critical for safety. Replace only with part number specied.

The symbol indicates a fast operating fuse and is displayed on the component side of the board. Replace only with fuse of the same rating as marked.

NOTE: The components identied by a red outline and a mark contain condential information. Specic instructions must be adhered to whenever these components

are repaired and/or replaced. See Appendix A: Encryption Key Components in the back of this manual.

KDL-22BX327/32BX327/32BX328/32BX427/40BX427

REFERENCE INFORMATION

RESISTOR : RN METAL FILM : RC SOLID : FPRD NONFLAMMABLE CARBON : FUSE NONFLAMMABLE FUSIBLE : RW NONFLAMMABLE WIREWOUND : RS NONFLAMMABLE METAL OXIDE : RB NONFLAMMABLE CEMENT : ADJUSTMENT RESISTOR

COIL : LF-8L MICRO INDUCTOR

CAPACITOR : TA TANTALUM : PS STYROL : PP POLYPROPYLENE : PT MYLAR : MPS METALIZED POLYESTER : MPP METALIZED POLYPROPYLENE : ALB BIPOLAR : ALT HIGH TEMPERATURE : ALR HIGH RIPPLE

Terminal name of semiconductors in silk screen printed circuit ( )

Device Printed symbol Terminal name

Transistor

Diode

Transistor

(FET)

Transistor

(FET)

Transistor

(FET)

Transistor

Discrete semiconductor

–

(Chip semiconductors that are not actually used are included.)

Collector

Base

Collector

Base

Cathode

Anode

Cathode

Anode

Common

Anode

Common

Anode Cathode

Common

Anode

Common

Anode Anode

Common

Cathode

Common

Cathode

Anode Anode

Cathode

Drain

Source Drain Gate

Emitter Collector Base

B1 E1

B2 C1E2

B2 E2C1

B1 C2

B2 E2C1

B1 C2E1

B2 E2

B1 C2E1

B1 E1

(B2)

Emitter

Anode

(NC)

Cathode

Anode

Cathode

Cathode Anode Anode

Source

Gate

Source

Gate

C1(B2)C2

C2C1

Circuit

C2C1(B2)

E2 E2E1(B2)

C2 C2E1(B2)

Ver.1.6

KDL-22BX327/32BX327/32BX328/32BX427/40BX427

1-3. BLOCK DIAGRAM

KDL-22BX327/32BX327/32BX328/32BX427/40BX427

1-4. CONNECTOR DIAGRAMS

KDL-22BX327/32BX327/32BX328/32BX427/40BX427

FIGURE 4-1. KDL-22BX327

KDL-22BX327/32BX327/32BX328/32BX427/40BX427

FIGURE 4-2. KDL-32BX327/32BX328

KDL-22BX327/32BX327/32BX328/32BX427/40BX427

FIGURE 4-3. KDL-32BX427

KDL-22BX327/32BX327/32BX328/32BX427/40BX427

FIGURE 4-4. KDL-40BX427

+ 30 hidden pages

SONY 32BX427, KDL 22BX300, 32BX328 Diagram

TABLE OF CONTENTS

SAFETY-RELATED COMPONENT WARNING

SAFETY CHECK-OUT

1-1. CIRCUIT BOARDS LOCATION

SECTION 1: DIAGRAMS

1-2. PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS INFORMATION

1-3. BLOCK DIAGRAM

1-4. CONNECTOR DIAGRAMS