Service manual

4. DISASSEMBLY AND ASSEMBLY
4.12 Service Manual CNS-9701
Replacing the Floppy Disk
Drive
Remove the screw which secures the drive to the disk case and replace the the drive
with a new one. When attaching the disk case to the chassis after the replacement,
match the drive opening and front panel opening.
NOTE in Assembling the Main Unit
To mount the floppy disk drive to the disk case, use hole No. 3 of the
disk case.
Replacing the Power
Supply Unit
1. Remove the 5 screws which secure the both side panels and top panel to the
chassis. Remove the both side panels and top panel from the main unit.
2. Disconnect all the power supply cables from the power supply unit. When
assembling the main unit after replacing the power supply unit, refer to the
“Replacing the Motherboard” section.
3. Remove the 3 screws which secure the power supply unit to the rear panel and
replace the power supply unit with a new one. Assemble the main unit by
reversing the above procedure.
Replacing the CD Drive
1. Remove the 4 screws which secure both side panels to the chassis. Remove
both side panels from the main unit.
2. Disconnect the following 3 cables from the CD drive.
- Hard disk flat cable (for IDE connection) connected to the motherboard
- Power supply cable (4 wires) connected to the power supply unit
- CD-audio cable (3 wires) connected to the motherboard
3. Remove the 4 screws which secure the CD drive to the chassis and replace the
CD drive with a new one. Assemble the main unit by reversing the above
procedure.
- Fan attached to the video IC on the graphic board
Remove the graphic board from the main unit according to “Replacing the
Motherboard” steps 1 to 2. Remove the screw which secures the fan to the heat
sink for video IC and replace the fan with a new one.