DOWNLOAD Sony KLV-40S550A Service Manual ↓ Size: 1.73 MB | Pages: 31 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

(1) Hold the center of a
     connector.

(2) Press the center of the 

 connector to insert it.

(3) Slide the slider to lock the
     connector. 

Lock

(1) Slide the slider to release      

the slider lock.

(2) Press the center lock tab
     to release the lock and pull
     the connector up. 

Unlock

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)

Figure A

Figure B

Figure C

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.

– 5 –

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

release the lock.

Figure D

Figure E

Figure F

Figure G

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.

(2) NG Condition

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

Figure H

Figure I

Gap

Gap

– 6 –

Push Point

Rear Cover

Switch Unit

Push towards inner set on top area of  
Program Button(with printing).

Step 1:  Install Rear Cover to Bezel.
 

Caution point:-

 

1a)  Make sure Rear Cover is not overlapped with

 

 

Bezel.

Step 2:  Screw the Rear Cover.
Step 3:  Push the Rear Cover at point 3 until click sound is
 

heard.

Remove Rear Cover from Switch Unit  
while pushing at Switch Unit towards  
inner side of set.

 
 

 
 

Bezel

Side Button

PUSH

 

3

1a

1a

1a

1a

– 7 –

Panel

Bezel

Switch Unit

2

1

Push and slant towards inner side of set

Step 1: Push the switch unit a little upwards carefully.
Step 2: Push and slant the switch unit towards inner
 

side of set to remove it correctly.