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Chapter 6: Replacing Assemblies
To remove and replace RAM SIMMs or SDRAM DIMMs
6–27
To remove and replace RAM SIMMs or SDRAM DIMMs
Use this procedure to remove the cover and disconnect cables, then remove and replace either
SIMMs or DIMMs on the motherboard, depending on the type of motherboard in the oscillscope.
When necessary, refer to other removal procedures.
1
Disconnect the power cable and remove the cover.
2 Remove the hard disk drive.
3 Disconnect the following cables from the motherboard connectors and set them aside:
• Serial port cables W24 and W25
• Parallel port cable W23
• Mouse connector cable W22
• Motherboard floppy cable W7
• Motherboard hard drive cable W9
Removing and replacing SIMMs on the AMI motherboard
Use this procedure if the oscilloscope has an AMI motherboard.
1
There are four SIMM sockets. Remove SIMMs starting with the SIMM closest to the
chassis side panel. To remove each SIMM, push the retaining clips at each end to the
side, then tilt the SIMM forward and pull it out.
Figure 6-26
Removing RAM SIMMs
2 To replace SIMMs, reverse the assembly procedure. Install SIMMs in the opposite order
of removal. When the SIMM is correctly installed, the locating fingers on the SIMM
socket will engage the holes in the SIMM, and the retaining clips will snap around the
sides of the SIMM.
Removing and replacing SDRAM DIMMs on the FIC motherboard (not pictured)
Use this procedure if the oscilloscope has an FIC motherboard.
1
Locate the DIMM slots on the FIC motherboard. Carefully pull the DIMM straight up
and out of the slot.
2 Insert the new DIMM by pushing it straight down into the DIMM slot using both hands.
3 Make sure the clips on the slot close up to hold the DIMM in place when the DIMM
touches the bottom of the slot.