Disassembly And Reassembly - Samsung CHB5707L/5237L Service Manual

5 Disassembly and Reassembly

This section of the service manual describes the disassembly and reassembly procedures for the
CHB5**7L/6**7L/7**7L monitors.
WARNING: This monitor contains electrostatically sensitive devices. Use caution when handling
these components.
5-1 Disassembly (CHB7**7L/CHB6**7L)
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.
5-1-1 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 7 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.
5-1-2 Removing the Video PCB &
CRT Socket PCB
1. Follow steps 1 through 5 in ÒCabinet
Disassembly,Ó 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 AssÕy 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.
CHB5**7L/6**7L/7**7L
5-1-3 Removing the Main PCB
1. Follow steps 1 through 5 in ÒCabinet
Disassembly,Ó steps 1 through 7 in ÒRemoving
the Video PCB and ÒRemoving the CRT
Socket PCB,Ó 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. Carefully lift the Main PCB AssÕy.
7. Remove the 6 screws on the top side of the
Main PCB.
8. Lift the Main PCB and place it on a flat, level
surface that is protected from static electricity.
5-1-4 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. 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.
5-1