Samsung CKB7227, CKB5237 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 close to you. Make sure nothing will
damage the screen.

2. Working from the back of the monitor remove
the signal cover cap out, and remove the 4
screws and carefully pull the rear cabinet up
and off the monitor.

3. Remove the 8 screws on the Top Shield and
remove it.

4. Remove the 4 screws on the Bottom Cover and
pull it upward to remove it.

5. Using pinch-nosed pliers or long-nosed pliers,
carefully disconnect the Anode Cap from the
CRT.

4-1-2 Removing the Video PCB &

CRT Socket PCB

1. Follow steps 1 through 5 in “Cabinet
Disassembly,” above.

2. Disconnect connectors CN103.

3. Lift off the CRT Socket PCB Assembly.

4. Hold the CRT Socket PCB Assembly while
you lift the cap on the CRT Socket and pull
out the two focus wires, G2 wire.

5. Remove both side screws on the lower edge of
the Video PCB Ass’y and the screw on the
signal connector and pull the assembly
towards you to remove it.

6. Remove all screws on the Video PCB
Assembly and remove the Video Shield.

7. Lift out the Video PCB and place it on a flat,
level surface that is protected from static
electricity.

4-1-3 Removing the Main PCB

1. Follow steps 1 through 5 in “Cabinet
Disassembly,” steps 1 through 7 in “Removing
the Video PCB and “Removing the CRT
Socket PCB,” above.

2. Disconnect the Degaussing Coil at CN600 on
the Main PCB.

3. Disconnect all easily accessible ground wires
from the CRT GND Assembly and Bottom
Chassis.

4. Disconnect the connector between CN_Tilt. on
the Main PCB and the Tilt coil.

5. Disconnect the DY connector between the DY
and the CN300A_7, CN400, CN401 and CN402
connectors on the Main PCB.

6. Remove the 2 screws on the left and right
sides of the PCB Bracket.

7. Carefully lift the Main PCB Ass’y.

8. Remove the 7 screws on the top side of the
Main PCB.

9. Lift the Main PCB and place it on a flat, level
surface that is protected from static electricity.

CKB5237L/7227L 4-1

4 Disassembly and Reassembly

This section of the service manual describes the disassembly and reassembly procedures for the
CKB5237L/7227L monitors.

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

these components.

4-1 Disassembly (CKB7227L)

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.

4-1-4 CRT Ass’y Disassembly

1. Complete all previous steps.

2. Remove the 4 side screws 2 on the top and 2
on either side of the CRT and lift the CRT Unit
Bracket.

3. Unhook the Degaussing Coil Assembly and
lift it off the CRT.

4-2-1 Replacing the CRT

1. Loop the CRT Ground Assembly around the
back of the CRT and under the 3 corner, metal
ears. Position the corner with the spring last.

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. Replace the 4 corner screws.

4. Replace the Degaussing Coil Assembly and
secure the Coil with the plastic Degaussing
Coil Holders.

5. Replace the CRT Ground Assembly.

6. Replace the Unit Bracket Assembly.

4-2-2 Replacing the Main PCB

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

2. Replace the 7 screws on the top side of the
Main PCB.

3. Position the Main PCB Ass’y in the Front
Cabinet and secure it on both sides with the
screws between the Bottom Chassis and CRT
Unit Bracket.

4. Replace the DY connector at the CN300A_7,
CN400, CN401 and CN402 connectors on the
Main PCB.

5. Replace the connector between CN_Tilt. on
the Main PCB and the Tilt Coil.

6. Replace all easily accessible ground wires on
the CRT GND Assembly and Bottom Chassis.

4. Remove the 4 corner screws and lift the CRT
up and away from the Front Cover Assembly
and place it on a padded surface.

Do not lift the CRT by the neck.

Caution: If you will be returning this CRT to

the monitor, be sure to place the CRT
face down on a protective pad.

7. Replace the Degaussing Coil at CN600 on the
Main PCB.

8. Replace the Anode Cap.

4-2-3Replacing Connector CN103 on the

Video PCB

1. Position the Video Shield and replace all
screws.

2. Replace both side screws on the lower edge of
the Video PCB Ass’y and the screw on the
signal connector.

4-2-4 Replacing the CRT Socket PCB

1. Hold the CRT Socket PCB Ass’y while you lift
the Cap on the CRT Socket and replace the
two Focus wires, G2 wire.

2. Reconnect the CRT Socket on the CRT pins at
the plug/Socket junction.

4-2-5 Cabinet Reassembly

1. Reconnect CN103 on the Video PCB.

2. Position the Top Shield and replace the 8
screws.

3. Replace the 4 screws on the Bottom Cover.

4. Position the Rear Cover making sure that the
tabs along the front edge are properly
snapped in place. Replace the 4 screws.

5. Replace the signal cable cover cap.

6. 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 CKB5237L/7227L

4-2 Reassembly (CKB7227L)

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

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