KDS-50A3000, KDS-55A3000, KDS-60A3000 - Sony TV Service Manual (repair manual). Page 13

1   Remove 1 screw from the Adjuster Cover, 

+PVTP2 4x16

2   Remove 2 screws from the Adjuster Block and 

the Supporter, +PWHTP2 4x25

3   Remove 2 screws from the Lamp Duct, +PVTP2 

4x16

4   Gently pull out Optics Block from cabinet.

Caution: When replacing the Optics Unit Block 

Assembly be sure to remove any dust particles.

1   Remove 1 screw from the Upper Duct, 

+BVTP2 4x16

2   Disconnect 2 connectors from the Power 

Supply (Ballast Unit).

3   Remove 1 screw from the Power Supply, 

+BVTP2 4x16

4   Remove 1 screw from the 

Power Supply, +BVTP2 4x16

5   Using caution not to damage the 

HV wires, push the HV Cable through 
the Plug Holder.
(See Appendix C for illustrations.) 

Note: To remove each duct, gently lift the tabs to 

release from the hooks.

6   Carefully detach from the Optics Block.
7   Remove 1 screw from the T board, 

+BVTP 3x12 TYPE2 IT-3

8   Disconnect 1 connector from the T board.
9   Disconnect 1 connector from the S2 board.

10   Remove 2 screws from the Fuse Holder, 

+BVTP 3x12 TYPE2 IT-3 

3

4

1

2

Lamp Duct Unit

Adjuster Cover

Adjuster Supporter (V)

Adjuster
Block (V)

Adjuster Plate (H)

Optics Block

D.C. Fan (80x80)

Turn Rivet

Optics Block

Note:The D.C. Fan is secured to the Optics Block Assembly with Turn Rivet screws. 

To remove these screws use a screw driver to unscrew the screw until it lifts slightly 
above the rivet then pull the screw and the rivet out from the fan. 
(Refer to the illustration to the left.)

☛

☛

2

1

3

9

10

4

5

6

8

7

Exhaust Duct (L)

Fan (DC Motor)

Fan Cushion

Power Supply
(Ballast Unit)

Fuse Holder

S2 Board

Fuse Sheet

Fuse Plate

2P Connector
(Thermal Fuse)

Intake Duct (F)

Lamp Duct (F)

Plug Holder

HV Cable (Ballast Plug) 

Lamp Duct (R)

T Board

Exhaust Duct (U)

Optics Block