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Sun Microsystems Netra t1 Series, Addendum

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Installing Four 256 Mbyte Memory Boards

7

7. Using a Phillips No.1 screwdriver, remove the screws and washers from the base

memory board (see

FIGURE 6

).

If you intend to replace the base memory board, lift out the board that is currently
installed. Otherwise, leave the current board seated in the connectors on the
motherboard but not screwed in.

Note –

If you are making a 4-stack (1 Gbyte) configuration, the base board and all

other boards in the stack must be of part number 370-4155.

For purposes of illustration, the board you use as the base board will be called Board
A, Board B will be the board you put on top of Board A, Board C will be the one you
put on top of Board B, and Board D will be the one at the top of the stack.

FIGURE 6

Removing the Mounting Screws from the Currently Installed Memory Board

!

Memory Board

Remove short screws

Summary of Contents for Netra t1 Series

Page 1: ...osystems Inc 901 San Antonio Road Palo Alto CA 94303 U S A 650 960 1300 Send comments about this document to docfeedback sun com Netra t1 4 Stack Memory Upgrade Addendum Part No 806 5606 10 June 2000 Revision A ...

Page 2: ...Sun Microsystems Inc 901 San Antonio Road Palo Alto CA 94303 4900 Etats Unis Tous droits réservés Ce produit ou document est protégé par un copyright et distribué avec des licences qui en restreignent l utilisation la copie la distribution et la décompilation Aucune partie de ce produit ou document ne peut être reproduite sous aucune forme par quelque moyen que ce soit sans l autorisation préalabl...

Page 3: ...rt number 806 2129 11 Note Do not install memory boards in stacks of three If you do not want to install boards in a 4 stack configuration you can install them in single board or 2 stack configurations In a 2 stack configuration you can combine Netra t1 memory boards of different capacities 64 256 or 512 Mbytes This document contains the following sections Materials and Tools Required on page 2 We...

Page 4: ...e spacers Four lock washers Four flat washers Four long screws 11 16 inch required only for 4 stack configurations Four round plastic spacers required only for 2 stack configurations Four short screws 3 16 inch required only for single board configurations Four medium length screws 3 8 inch required only for 2 stack configurations To install a stack of four boards you need four memory board packag...

Page 5: ...onic parts that are extremely sensitive to static electricity Do not touch any metal parts Wear an anti static wrist strap connected to an earthing point before you open the system FIGURE 2 Preparing to Open the System Wearing an Anti Static Wrist Strap 1 The anti static wrist strap must be connected to an earthing point ...

Page 6: ...e console b Turn the power supply switch off c Disconnect the power cord or power cords d Disconnect all other cables 2 If you have installed the system into a rack or cabinet remove it 3 Remove the rack mount brackets from the side of the system see FIGURE 3 FIGURE 3 Removing the Rack Mount Brackets from the Side of the System 4 Place the unit at an ESD station and make sure you are wearing an an...

Page 7: ...a t1 system make sure that all power cords and all other cables have been disconnected 5 Remove the system s top cover see FIGURE 4 To do this a Remove the screw at the rear center of the unit b Slide the top cover back and lift it off FIGURE 4 Removing the Top Cover of the Netra t1 System 1 2 2 3 5a 5b ...

Page 8: ...Lift out the processor cover located in the rear center of the unit see FIGURE 5 Make sure you slide the processor cover tabs from under the rear I O card before lifting the processor cover away from the system FIGURE 5 Lifting out the Processor Cover Tabs ...

Page 9: ...board but not screwed in Note If you are making a 4 stack 1 Gbyte configuration the base board and all other boards in the stack must be of part number 370 4155 For purposes of illustration the board you use as the base board will be called Board A Board B will be the board you put on top of Board A Board C will be the one you put on top of Board B and Board D will be the one at the top of the sta...

Page 10: ...board Caution Although it is necessary for the connectors to be properly seated you must not apply excessive pressure to them If you do you might cause micro fractures on the motherboard which can impair the operation of the board 9 Position the connectors of one memory board Board C above the memory board connector sockets of another memory board Board B in a piggy back style then press down the ...

Page 11: ...ng the Third Memory Board on Top of the Second 10 Insert the four plastic spacers and align them with the mounting holes on memory Boards B and C see FIGURE 9 FIGURE 9 Aligning the Four Plastic Spacers with the Mounting Holes Board B ESD foam Board C Spacers ...

Page 12: ...ers onto Board A see FIGURE 10 Follow the procedure described in Step 9 to mount the assembled Boards B and C with spacers inserted onto memory Board A Hold the spacers if necessary so that they do not move out of position FIGURE 10 Mounting the Second and Third Boards onto the Base Memory Board Board B Board C Board A ...

Page 13: ... 256 Mbyte Memory Boards 11 12 Align the connectors of Board D to the sockets of Board C but do not press down yet to seat Board D see FIGURE 11 FIGURE 11 Four Stacked Memory Boards on the Netra t1 Motherboard Board D ...

Page 14: ... Board C preventing any sideways movement of the stack when you press home the connectors of Board D 15 Now press home fully the connectors of Board D You might find it helpful to seat the middle connector properly before the other two connectors 16 Tighten the screws into the metal hex standoffs so that the stack sits firmly on the motherboard Tighten each screw a little at a time to avoid bendin...

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