Repairs R&S ZVA
1177.5333.02 3.50 E-11
Replacing USB Board A40
(See Chapter 5, Spare Parts List, Item 1050 and drawings 1145.1110 and 1145.1390)
The USB board is located behind the front cover and the keyboard frame next to the ON key.
Opening the instrument and removing the USB-board
Turn off the instrument and disconnect from the mains.
Remove termination and 3.5mm connection cables (only with option ZVAx-B16)
Remove the 4 screws from the front handles (410), left and right, and take off the front handles.
Remove the countersunk screw (390/640) next to the display and pull off the front cover forwards
Remove the 2 countersunk screws (610) in the top of the front frame and the 2 in the bottom.
ZVA8: Remove the countersunk screws (168) (2 ), (153), (154), (163), (164).
Pull out the front unit together with the keyboard and display (600, 604) forwards and place it with the
key-side on top of the instrument.
Remove the 2 screws (1070), disconnect the cable and remove the USB board (1050).
Fitting the USB board and reassembling the instrument
Install the new USB board by reversing the removal procedure, replace all screws and connect and
install the relevant cables (drawing 1145.1390).
Insert the front unit back into the instrument and secure to the front frame with 4 countersunk
screws (610).
Refit the countersunk screws (168) (2 ), (153), (154), (163), (164).
Replace the front cover and secure with the countersunk screw (390/340).
Refit the 2 front handles (410) using 4 screws.
Fit the termination and the 3.5mm connection cables (only with option ZVAx-B16).
Connect the mains cable, turn on at the mains switch and press the ON key.
Check the USB board: Connect the mouse or keyboard and perform a function check.
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