HP 340 Series Service Manual page 47

Removal
1. Hold the SPU backplane with one hand while pulling the video board out of its slot.
2. If a graphics accelerator board is attached, remove the screws holding the graphics board
to the video board and remove it
3. Note the video board's configuration switch settings, if the video board has them.
Installing the Video Board Just Removed
1. If a graphics accelerator board was attached, replace it.
2. Install the video board in the top slot to where its connectors just touch the SPU backplane
connectors.
3. Place one hand behind the SPU backplane for support and use your other hand to seat
the video board in the SPU backplane connectors.
I
CAUTION
I
When a video board with two backplane connectors is installed, the
smaller connector should not completely seat with the small backplane
connector. A small gap may be visible between the video board and
backplane small connectors. You should look down the backplane's top
edge and verify it is straight after the video board is installed. If it's
not, move the backplane connector just enough to make the backplane
straight.
4. Replace in reverse order the items listed in the Preliminary Requirements.
Installing a New Video Board
Before installing a new video board, remove these parts from the new video board as follows:
1. Remove the lock nut(s) and washers fronl the new video board's BNC connector(s). A
9/16-inch or .5/8-inch open wrench may be used, depending on the nut size.
2. Remove the two screws holding the video board's backplate to the video board.
These are usually #1 Pozidriv screws, except for the 98550-66573 video board which has
a stand-off requiring a 5.5mm nutdriver to remove and install it.
3. Remove the backplate from the new video board.
4. If you're replacing a failed video board, remove the part number label from the failed
board and install the backplate on the video board just removed. This is required so the
failed video board will be complete when it's returned to the Board Exchange Program.
5. Verify the new video board's configuration switches are set the same as the old video
board's switch settings.
6. If a graphics accelerator board was attached, connect it to the video board and screw it
in pilace.
7. Install the video board in the top slot to where its connectors just touch the SPU backplane
connectors.
Assembly Replacement
35