58 Keysight N9038A MXE Service Guide
Boot Up and Initialization
Potential Problems During Boot Process
Verify Video Signal Path Integrity
The video controller is located on the A4 Processor assembly and is routed to
the front panel LCD through a few interconnections. These interconnections
are:
— A4 Processor assembly to A7 Midplane Board
— A7 Midplane Board to A8 Motherboard assembly
— A8 Motherboard assembly to A1A2 Front Panel Interface assembly via W8
ribbon cable
— A1A2 Front Panel Interface to A1A3 LCD via A1W1 flex-circuit
If all of these connections are properly made and none of the cables are
damaged proceed to “Video Controller / LCD Troubleshooting”.
Video Controller / LCD Troubleshooting
The video controller is located on the A4 Processor assembly. The video signals
that the controller outputs are LVDS. As described above, these signals are
routed to the LCD via the A7 Midplane Board, A8 Motherboard, and A1A2 Front
Panel Interface board.
On the A1A2 Front Panel Interface board the LVDS signals are buffered and
then sent to the LCD via the A1W1 Flex circuit.
The most likely cause for a video problem is the A4 Processor assembly;
however it could be the result of a defective LCD.
To Next Page
Loading...
Need help?
General
