Figure 4-32 Replace The Touchscreen Controller Board - Keysight 8990B Service Manual

Disconnect these cables
Remove these two T10 screws
Figure 4-32
– When performing this procedure in reverse to reassemble the 8990B, ensure
NOTE
– Before reassembling the front chassis, ensure that all the cables are pulled
Keysight 8990B Service Guide
Replace the touchscreen controller board
that all the edges (inner and outer edges) are fully pressed in when you place
the front bezel back on the 8990B.
through their appropriate openings and reattached to the boards located on
the back of the front chassis. Once you have closed the chassis, it is difficult
to reach into the small holes to pull the cables through.
Touchscreen controller board
Repair Guide 4
115