Memory Board Removal And Replacement - HP 400 Series Servicing Manual

5.5.22 Memory Board Removal and Replacement (Model 400s)
Refer to Figure 5-40 and follow these steps to remove a memory board:
1. Remove the top and left side cover. Then, remove the CPU board.
2. Identify (using the failing memory address) the specific memory board to re-
3. Using a flat-tipped screwdriver, pry each end of the memory board up a little at
4. Remove the memory board.
5. If you are replacing the CPU board, remove the memory board guides by slid-
If you have replaced the CPU board and are moving the memory modules from the old
CPU board to a new one, place the memory modules in the same slots on the new CPU
board as they were on the old CPU board.
Memory modules have several restrictions regarding their installation:
•
•
•
•
Follow these steps to replace a memory board:
1. If you are replacing the CPU board, install the memory board guides by placing
2. Insert the memory board, with its connector side towards the back, into the
3. Firmly seat the memory board in its CPU board connector.
4. Ensure the board guides are straight and correctly holding the sides of the
5-56 FRU Removal and Replacement
move. Refer to chapter 4.
a time until it is clear of the card guide.
ing them toward the back. Then, lift their tabs out of the CPU board's holes.
You may replace one module of a pair, but modules of the same size must be
installed in pairs.
There can be no empty slots between modules or module pairs.
The largest size pair must be in slots 0A and 0B.
Each higher numbered slot pairs must have equal sized or next smaller sized
memory boards used in the system unit.
their tabs in the CPU board holes. Then, sliding them towards the front, locking
them in place.
connector.
memory boards.