Keysight N5264A Service Guide 7-17
Repair and Replacement Procedures
Removing and Replacing the A14 System Motherboard
Removing and Replacing the A14 System Motherboard
Tools Required
— T-10 TORX driver (set to 9 in-lb)
— T-20 TORX driver (set to 21 in-lb)
— ESD grounding wrist strap
Removal Procedure
Refer to
for this procedure.
1.
Disconnect the power cord.
2.
Remove the outer and inner covers. Refer to
.
3.
Remove the front panel assembly. Refer to
Front Panel Assembly” on page 7-7
.
4.
Remove the A18 GPIB board. Refer to
“Removing and Replacing the A18
. (This results in the A16 power supply assembly
and the A17 CPU board assembly also being removed.)
5.
Remove the A15 midplane board. Refer to
A15 Midplane Board” on page 7-20
.
6.
Remove the A10, A11, and A12 boards. Refer to
the A10, A11, and A12 Boards (For analyzers with serial numbers prefixed
MY/SG/US5144 and below.)” on page 7-13
7.
Remove the fan bracket and fans. Refer to
.
8.
Turn the measurement receiver over so that the bottom side is up and
remove four screws (item
①
), that secure the bottom of the midplane
bracket to the chassis.
9.
Turn the measurement receiver back over so that the top side is up.
Remove seven screws (item
➁
) that secure the left side bracket to the
chassis left inner panel.
10.
Remove two screws (item
③
) from each side that secure the midplane
bracket to the chassis left and right inner panels. Lift the midplane bracket
out of the measurement receiver.
11.
Remove three screws (item
④
) that secure the A14 system motherboard
to the chassis.
12.
Slide the A14 system motherboard toward the rear of the measurement
receiver to release it from the 15 keyhole standoffs (item
⑤
) on the
chassis.