Sony KLV-22T550A, KLV-32T550A Schematic

REVISION HISTORY

EX2T

CHASSIS

MODEL

KLV-22T550A KLV-32T550A

NO. SUFFIX DATE SUPP / CORR DESCRIPTION

1 -01 2009/06 _ _ 1st Issue

PART NO.: 9-888-120-01

SERVICE MANUAL

EX2T

CHASSIS

MODEL COMMANDER DEST.

KLV-22T550A

KLV-32T550A

RM-GA016 ARM, India, Indonesia,

Malaysia,New Zealand, Phillipines, Saudi Arabia, Singapore, SOGUL , Thailand, Vietnam

RM-GA016 ARM, India,

Indonesia, Iran, Malaysia, Phillipines, Saudi Arabia, Singapore, SOGUL, South Africa, Thailand, Vietnam

MODEL COMMANDER DEST.

KLV-22T550A

KLV-32T550A

RM-GA016

LCD COLOR TV

KLV-22, 32 T550A

RM-GA016

TABLE OF CONTENTS

Section Title P a g e

1. SAFETY NOTES

1-1. Caution Handling of LCD Panel ..................................... 3

1-2. Safety Check Out.............................................................3

1-3. Leakage Test .................................................................... 3

1-4. WARNING ! .................................................................... 3

1-5. Lead Free Information..................................................... 4

1-6. Attachment & Detachment of JST IBH Connector ....... 4

2. SELF DIAGNOSTIC FUNCTION

2-1. Overview of Control Buttons .......................................... 6

2-2. LED Display Specification..............................................6

2-3. LED Display Control.......................................................6

2-4. LED Pattern .....................................................................6

2-5. Viewing the Service Diagnosis Display..........................6

2-6. Standby LED Error Display ............................................7

2-7. Triage Chart ..................................................................... 8

3. TROUBLE SHOOTING

3-1. FlowChart ........................................................................9

3-2. Board Replacement Order ............................................. 10

Section Title Pa ge

6. SERVICE ADJUSTMENTS

6-1. Accessing Diagnostic Menu..........................................18

6-2. Viewing the Service Mode Display .............................. 18

6-3. Control Keys Via Remote Commander.........................18

6-4. Adjustment Method ....................................................... 18

6-5. Table 1............................................................................20

7. DIAGRAMS

7-1. Block Diagram............................................................... 21

7-2. Connector Diagram ....................................................... 28

7-3. Circuit Board Location .................................................. 29

7-4. Schematic Diagram ........................................................ 29

7-5. Printed Wiring Boards ................................................... 29

7-6. Semiconductor ............................................................... 29

8. EXPLODED VIEWS

8-1. KLV-22T550A ...............................................................30

8-2. KLV-32T550A ...............................................................32

9. ELECTRICAL PARTS LIST

9-1. KLV-22T550A ...............................................................34

9-2. KLV-32T550A ...............................................................35

4. DISASSEMBLY

4-1. KLV-22T550A ...............................................................11

4-2. KLV-32T550A ...............................................................12

5. WIRE DRESSING

5-1. KLV-22T550A ...............................................................14

5-2. KLV-32T550A ...............................................................16

OPERATING INSTRUCTIONS

– 2 –

SECTION 1

SAFETY NOTES

KLV-22, 32 T550A

RM-GA016

1-1. Caution Handling of LCD Panel

When installing the LCD Panel, make sure you are grounded with a wrist band. When installing the LCD Panel on the wall, the panel must be secured using the 4 mounting holes on the rear cover.

1) Do not press 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 temperature 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 short circuit within the module.

6) Disconnect the AC adapter 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 circuit.

9) Protect the panel from ESD to avoid damaging the electronic circuit (C-MOS).

1-2. Safety Check-Out

After correcting the original service problem, perform the following safety checks before releasing the set to the customer:-

1-3. 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 0.5mA (500 microamperes). Leakage current can be measured by any one of the three methods:-

1. A commercial leakage tester such as the SIMPSON 229 or RCA WT-540A. Follow the manufacturers instructions to use those 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 0.75V 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 1.)

To Exposed Metal Parts on Set

0.15 µF

1.5 k

Ω

Voltmeter (0.75 V)

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 contact high-wattage resistors.

3)Check all control knobs, shields, covers, ground straps and mounting hardware have been replaced. Be absolutely certain 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 test as described next.

Earth Ground

Figure 1. AC voltmeter to check AC leakage

1-4. W ARNING !

SAFETY-RELATED COMPONENT WARNING! COMPONENTS IDENTIFIED BY SHADING AND MARK ! ON THE EXPLODED VIEWS 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.

– 3 –

KLV-22, 32 T550A

RM-GA016

1-5. Lead Free Information

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.

Figure 2: LF logo

Figure 3: LF logo on circuit board

The servicing of these boards requires special precautions. 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:-

rebmuntraP retemaiD skrameR

91-500-046-mm 02-500-046-7m4.0Kg05.0 12-500-046-7m5.0Kg05.0 22-500-046-7m6.0Kg52.0 32-500-046-7m8.0Kg00.1 42-500-046-7m0.1Kg00.1 52-500-046-7m2.1Kg00.1 62-500-046-7m6.1Kg00.1

3.0Kg52.0 m m m m m m m

1-6. Attachment, Detachment & Confirmation of Lock

Condition of JST IBH Connector (If applicable for these models)

Attention: This is a SAFETY CRITICAL PROCESS. a) Attachment (1) Press the center of the connector to insert it.

(2) Press position (NG for red marking portion)

(3) Prohibited matter (Refer Figure A~C explanation)

Due to high 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

Figure A

Figure C

Figure B

Figure A: Do not press lock

portion.

Figure B: Do not press the

front side of the connector.

Figure C: Do not press the side

of the connector.

– 4 –

KLV-22, 32 T550A

RM-GA016

b) Detachment

(1) Hold between the lock part and harness of socket.

Release the lock and pull out connector within 20 degree.

(2) Prohibited matter (Refer Figure D & E explanation)

Figure D

c) Confirmation of Lock Condition

(1) Confirm the lock conditions. When lock is completed,

base and socket must be same line as shown in Figure F and G.

Figure F

Figure G

Figure E

Figure D: Do not pull out by holding the harness only. Figure E: Do not pull out the connector when it does not

release the lock.

(2) NG Condition

It is NG condition when there are some gap between base and socket such as in Figure H and I.

Gap

Figure H

Gap

– 5 –

Figure I

KLV-22, 32 T550A

RM-GA016

SECTION 2

SELF DIAGNOSTIC FUNCTION

2-1. Overview of Control Buttons

Power

Input Select

Volume

2-2. LED Display Specification

LED Type Description POWER Green: One LED

Remark

Green lights at power ON.

Channel

Remote Sensor

Timer Indicator

Power/ Standby Indicator

2-4. LED Pattern

When safety shutdown occurs, Standb y LED display reports the cause by using the blinking patterns as indicated below.

0.3 sec

2.0 sec 2.0 sec

Example: The figure above shows LED display when

SHUTDOWN is caused by audio failure. It repeats flashing for a specified number of times in 0.3sec/ cycle and has a 2 seconds interval of lighting off. Please note that a 2 seconds interval of lighting off is fixed regardless of abnormal state types.

2-5. Viewing the Service Diagnosis Display

1. While TV on standby mode, press the following sequence on the Remote commander.

STANDBY Red: One LED Red lights during standby.

Timer

Orange

: One Led

Amber lights during Timer activation.

2-3. LED Display Control

Status

POWER ON

STANDBY

Failure

Power LED

Green lights

OFF

Display

Standby LED

OFF

Red lights

Red flashes

Timer LED

Wake up timer-ON Sleep timer-ON

Wake up timer-ON Sleep timer-OFF

Failure-OFF

LOCTOP is in a normal state.

LOCTOP is in a sleep state.

Classify the trouble causes by the no. of red blinking.

* Sleep timer is cancelled once TV goes to standby.

Remark

On screen

display

Channel 5

Volume (-)

POWER

(if wrong key is pressed or passed 3 seconds during each process, cancel entering the self-diagnosis display.)

002: LED blinking times

S E L F C H E C K

0 0 2 M A I N _ P O W E R _ E R R O R 0 0 0 0 4 5 V _ P O W E R _ E R R O R 0 0 0 0 6 B A C K _ L I G H T _ E R R O R 0 0 0 0 7 T E M P _ E R R O R 0 0 0 0 8 A U D I O _ E R R O R 0 0

1 2 3 4 5 - 0 9 8 7 6 - 0 1 2 3 4

12345: Total operation time by hour (0-65535) 09876: Boot count (0-65535) 01234: Panel operation time by hour (0-65535)

MAIN_POWER_ERROR: Detection name 00: Error Count (00-99)

2. To Exit, press the <I/1> key. Addtional information:

1. To refresh History of Error Note:

--> press < 8 > --> < 0 > key.

2. To refresh Histry of Panel Operation Time.

-->press < 7 > --> < 0 > key

– 6 –

2-6. STANDBY LED ERROR DISPLAY

Blinking times Detection items Countermeasure

2 Main power failure Replace either/both z BT2 board

z GT2 board (22”) z GT3 board (32”)

4 5V power failure Replace BT2 board.

8Audio failure Replace either/board.

z BT2 board z GT2 board (22”) z GT3 board (32”) z Speaker z Woofer

6 Back light failure Replace either/board.

z BT2 board z GT2 board (22”) z GT3 board (32”)

KLV-22, 32 T550A

RM-GA016

7 Internal temperature Replace either/both z GT2 board (22”)

failure z GT3 board (32”)

Note: Each of the above blinking repeats every 2 seconds.

– 7 –

KLV-22, 32 T550A

RM-GA016

2-7. T riage Chart

2-7-1. KLV-22T550A

Failure

2x 4x 6x

BT2

GT2

Panel

Speaker

2-7-2. KLV-32T550A

Failure

2x 4x 6x 7x 8x No Power Sound NG Picture NG

BT2

7x 8x No Power

Sound NG Picture NG

GT3

Panel

Speaker

– 8 –

SECTION 3

Sound NG

Only speaker out?

BT2 Board NG

UI of Audio

setting

correct? Volume,TV speaker

YES

Set correctly or reset by menu

BT2 Board or Speaker NG

YES

AUDIO_VCC

(GT2:1, GT2:10V, GT3:13V)

CN7000_1, 2pin on

YES

GT2 or GT3 Board NG

TROUBLESHOOTING

3.1 Flowchart Trouble Shooting Flowchart

1. NO POWER 2. SOUND NG

No Power

YES

KLV-22, 32 T550A

RM-GA016

Check AC cable connection

YES

STBY_VCC

(GT2:13.2V, GT3:6.2V)

CN7000_7pin on BT2

YES

BT2 NG

3. PICTURE NG

PICTURE NG

AC cable NG

GT2 or GT3 Board NG

All input have

problem

Backlight on?

UI of some picture

setting correct?

Set correctly or reset by menu

YES

BT2 Board NG

BT2 Board or GT2, GT3 Board NG

YES

LVDS harness connection or BT2 board or Panel NG

– 9 –

KLV-22, 32 T550A

RM-GA016

3.2 Board Replacement Order

3.2.1. LED 2x or 4x BLINKING

LED 2x or 4 x BLINKING

GT2 or

GT3

Replace BT2

Replace(OK)

3.2.2. LED 8x BLINKING

LED 8x BLINKING

Replace(OK)

Speaker

Replace BT2 Finish

Finish

3.2.3. LED 6x BLINKING 3.2.4. LED 7x BLINKING

LED 6x BLINKING

GT2 or

GT3

Replace(OK)

BT2

Replace Panel Module

Replace(OK)

Finish

LED 7x BLINKING

Replace(OK)

BT2

Replace Panel Module

Finish

– 10 –

+ 25 hidden pages