DOWNLOAD Sony KLV-40W450A / KLV-46W450A / KLV-52W450A Service Manual ↓ Size: 5.45 MB | Pages: 40 in PDF or view online for FREE

– 4 –

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.

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:-

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 

9

1

-

5

0

0

-

0

4

6

-

mm

m

m

m

m

m

m

m

3

.

0

Kg

5

2

.

0

0

2

-

5

0

0

-

0

4

6

-

7

m

4

.

0

Kg

0

5

.

0

1

2

-

5

0

0

-

0

4

6

-

7

m

5

.

0

Kg

0

5

.

0

2

2

-

5

0

0

-

0

4

6

-

7

m

6

.

0

Kg

5

2

.

0

3

2

-

5

0

0

-

0

4

6

-

7

m

8

.

0

Kg

0

0

.

1

4

2

-

5

0

0

-

0

4

6

-

7

m

0

.

1

Kg

0

0

.

1

5

2

-

5

0

0

-

0

4

6

-

7

m

2

.

1

Kg

0

0

.

1

6

2

-

5

0

0

-

0

4

6

-

7

m

6

.

1

Kg

0

0

.

1

7

  Figure 2:  LF logo

  Figure 3:  LF logo on circuit board

– 5 –

MENU TV/VIDEO

VOLUME

CHANNEL

POWER

PICTURE OFF/

TIMER

REMOTE
SENSOR

LIGHT

SENSOR

STANDBY

POWER

2-4. LED Pattern
When safety shutdown occurs, Standby LED display reports the
cause by using the lightning patterns as indicated below.

Example:

The figure above shows LED display when
SHUTDOWN is caused by DC_ALERT 2. 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.

2.0 sec

2.0 sec

0.3 sec

0.3 sec

 LED Typ e

       Description

Remark

Status

Display

Power LED

 

Remark

 POWER

  

Green: LED

    Green lights at power ON.

 STANDBY

 

Red: One LED

 

Red lights during standby.

 Timer

Picture Off/

  Green/Amber
  : Two LEDs

   Green lights during Picture 
   OFF and amber lights 
   during Timer activation.

POWER ON

 

Green lights

OFF

in a normal state.

STANDBY

OF

OFF

F

Red lights

Red flashes

Microcomputer is

in a sleep state.

Failure

Classify the 
trouble causes by
the no. of red.

Standby LED

Microcomputer is

– 6 –

Blinking times

Error

Countermeasure

2

DC_DET (12V Main Voltage)

Replace either/both

z

BG1V board

z 

Power board: IP5(40",46"),G5(52")

3

DC_ALERT 1

Replace BG1V board.

4

DC_ALERT 2

Replace BG1V board.

6

BACKLIGHT/

Replace either/both

z

BG1V board

INVERTER ERROR

z

Power board: IP5(40”,46”), G5(52”)

z

Inverter board: D4(52”), D5(52”)

7

INTERNAL TEMP

Replace either/both

z

BG1V board

ERROR

z

Power board: IP5(40”,46”), G5(52”)

z

Inverter board: D4(52”), D5(52”)

8

AUDIO ERROR

Replace either/both

z

BG1V board

z

Power Unit board:
IP5(40", 46"), G5(52")

z

Speaker

9

HFR ERROR

Replace BG1V board and Panel

10

RESERVED

—

11

NVM ERROR

Replace either/both

z

BG1V board

z

Power Unit board:
IP5(40", 46"), G5(52")

12

I

2

C ERROR

Replace BG1V board.

13

BALANCER ERROR

Replace either/both

z

BG1V board

z

Power Unit board:
IP5(40", 46"), G5(52")

z

Inverter board:
D4(52"), D5(52")

z

Panel

14

HDMI ERROR

—

2-5. Standby LED Error Display
Perform below countermeasures according to Standby LED blinking times.

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

– 7 –

5 

Lift to remove Rear Cover

1 

Nineteen screws

 

(BVTP2 4 X 16)

2 

Two screws

 

(+PSW M3 X 5)

3 

Two screws

 

(+BVTP 3 X 12)

4 

Six screws

 

(+PSW M5 X 12)

5 

Lift to remove Rear Cover

1 

Twenty One screws

 

(BVTP2 4 X 16)

2 

Two screws

 

(+PSW M3 X 5)

3 

Two screws

 

(+BVTP 3 X 12)

4 

Six screws

 

(+PSW M5 X 12)

6 

Lift to remove Rear Cover

1 

Twenty One screws

 

(BVTP2 4 X 16)

2 

Two screws

 

(+PSW M3 X 5)

3 

Two screws

 

(+BVTP 3 X 12)

4 

Four screws

 

(+PSW M5 X 8)

5 

Two screws

 

(+PSW M5 X 12)

2 

Stand assy

4

  Under Bar Assy

1

  Four screws

 

(+PWH M5 X 16)

3 

Two screws

 

(BVTP2 4 X 16)

2

 Stand assy

4

 Under Bar Assy

1

 Four screws

 

(+PWH M5 X 16)

3 

Two screws

 

(BVTP2 4 X 16)

2

 Stand assy

4

 Under Bar Assy

1

 Four screws

 

(+PSW M5 X 20)

3 

Two screws

 

(BVTP2 4 X 16)