Samsung CKA4217, CKA5227 Disassemble

4-1-1 Cabinet Disassembly

1. With a pad beneath it, stand the monitor on its
front with the screen facing downward and
the base closest to you. Make sure nothing will
damage the screen.

2. Press in the tab on the Cabinet Bottom and
pull the Tilt and Swivel Base upward to
remove it.

3. Working from the back of the monitor, remove
the four screws and remove the Rear Cover.

4. Using pinch-nose pliers or long-nose pliers,
carefully disconnect the Anode Cap from the
CRT.

Caution: Do not touch the anode contact on

the CRT.

4-1-2 Removing the CRT Socket PCB

1. Complete all previous steps.

2. Disconnect CRT and Main PCB ground wires
on CRT Socket PCB and Shield Cover.

3. Desolder the 5 tabs on the underside of the
CRT Socket PCB shield and remove the CRT
Socket PCB Shield.

4. Using a knife, cut through the silicone bond
and lift off the CRT Socket PCB.

5. Disconnect connectors CN102 and two ground
wires on the CRT Socket PCB.

4-1-3 Removing the Main PCB

1. Complete all previous steps.

2. Disconnect Degaussing Coil at the CN601
connector on the Main PCB.

3. Disconnect all easily accessible ground wires
on the Main PCB and Chassis Bottom.

4. Disconnect the DY connector between the DY
and the CN301, CN302, CN502 and CN503
connector on the Main PCB.

5. Remove the screws on the back and along
each side of the Chassis Bottom.

6. Carefully lift the Main PCB Ass’y.

7. Remove all other ground wires.

4-1-4 CRT Ass’y Disassembly

1. Complete all previous steps.

2. Straighten the Degaussing Coil Assembly
coated metal ties and lift Coil Ass’y from the
CRT.

3. Remove the four corner screws and lift the
CRT up and away from the Front Cover
Assembly and place it on a padded surface.

Caution: Do not lift the CRT by the neck.

If you will be returning this CRT to
the monitor, be sure to place the CRT
face downward on a protective pad.

CKA42*7L/5227L 4-1

4 Disassembly and Reassembly

This section of the service manual describes the disassembly and reassembly procedures for the
CKA42*7L/5227L monitors.

WARNING: This monitor contains electrostatically sensitive devices. Use caution when handling

these components.

4-1 Disassembly

Cautions:1. Disconnect the monitor from the power source before disassembly.

2. Follow these directions carefully; never use metal instruments to pry apart the cabinet.

4-2-1 Replacing the CRT

1. Loop the CRT Ground Ass’y around the back
of the CRT and under the four corner metal
ears. Position last the corner with the spring.

2. With the Front Cover Assembly lying face
down on a protective pad, position the CRT so
that the corner metal ears fit properly in the
Front Cover Assembly.

3. Secure the CRT ground Ass’y and CRT at each
of the four corners with the CRT screws.

4. Replace the Degaussing Coil Assembly and
wrap the Coil with the plastic coated metal
ties to hold the Coil in place.

4-2-2 Replacing the Main PCB

1. Stand the monitor on its front with the screen
facing downward.

2. Slide the Main PCB into the Chassis Bottom
and replace the wires and screws on the
Chassis Bottom.

3. Position the Main PCB Ass’y in the front
Cabinet and secure it with the screws.

4. Replace both side CRT ground wires on the
Chassis Bottom.

5. Replace the Degaussing Coil at the CN601
connector on the Main PCB.

6. Replace the DY connector at the CN301,
CN302, CN502 and CN503 connector on the
Main PCB.

7. Replace all easily accessible ground wires on
the Main PCB and Chassis Bottom.

8. Replace the Anode Cap.

4-2-3 Replacing the CRT Socket PCB

1. Lock the Focus (G3) wire on the CRT Socket
and reconnect the Screen (G2) wire on the
CRT Socket PCB.

2. Reconnect the CRT Socket on the CRT pins
and apply silicon bond at the Plug/Socket
Junction.

3. Replace the CRT and Main PCB ground wires
on CRT Socket PCB and Shield Cover.

4. Reconnect the connectors CN102 to the CRT
Socket PCB.

5. Solder the 5 tabs on the underside of the CRT
Socket Shield.

4-2-4 Cabinet Reassembly

1. Complete all previous steps.

2. Position the Rear Cover marking sure the tabs
along the front edge are properly snapped in
place. Replace the four screws.

3. Snap the Tilt and Swivel Base into position.

4. Set the monitor on its Base and make sure that
the CRT faceplate was not scratched or
otherwise damaged.

4 Disassembly and Reassembly

4-2 CKA42*7L/5227L

4-2 Reassembly

With the CRT facing downward on a protective pad, use the steps that follow to reassemble the monitor.