A1 Front Panel Assembly; A1A2 Front Panel Interface Board; A1A3 Lcd - Keysight N8973B Service Manual

Front Panel/Motherboard Troubleshooting

A1 Front Panel Assembly

A1 Front Panel Assembly
The major components of the A1 Front Frame Assembly are the A1A2 Front
Panel Interface Board, A1A3 LCD, which are serviceable as individual
components.
The A1 assembly is used to display the measurement results, accept user input
via the keyboard, and connect USB peripheral devices.

A1A2 Front Panel Interface Board

The A1A2 Front Panel Interface board is serviced as an assembly only; no
component level repair is supported.
The Front Panel Interface Board contains LCD control, Inverter drive, audio
amplifiers, internal speaker, a 4 port USB hub, and a USB keyboard
microcontroller.
The two different front panel rubber keypads attach to the back side of the
board, which has the keyboard contacts printed on the reverse side.
The 4 ports from the USB hub contained on this board go to the 3 front panel
USB connectors and the keyboard microcontroller.

A1A3 LCD

The LCD used is a 10.6 inch WXGA TFT touchscreen display, which as a
resolution of 1280 x 768. It has two backlights that are not individually
replaceable.
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