Removing And Replacing The A14 System Motherboard - Keysight N5264A Service Manual

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
1. Disconnect the power cord.
2. Remove the outer and inner covers. Refer to
3. Remove the front panel assembly. Refer to
4. Remove the A18 GPIB board. Refer to
5. Remove the A15 midplane board. Refer to
6. Remove the A10, A11, and A12 boards. Refer to
7. Remove the fan bracket and fans. Refer to
8. Turn the measurement receiver over so that the bottom side is up and
9. Turn the measurement receiver back over so that the top side is up.
10.Remove two screws (item
11.Remove three screws (item
12.Slide the A14 system motherboard toward the rear of the measurement
Keysight N5264A Service Guide
Figure 7-8
for this procedure.
page 7-5.
Front Panel Assembly" on page
GPIB Board" on page 7-26. (This results in the A16 power supply assembly
and the A17 CPU board assembly also being removed.)
A15 Midplane Board" on page
the A10, A11, and A12 Boards (For analyzers with serial numbers prefixed
MY/SG/US5144 and below.)" on page
Fans" on page 7-38.
remove four screws (item
bracket to the chassis.
Remove seven screws (item
chassis left inner panel.
bracket to the chassis left and right inner panels. Lift the midplane bracket
out of the measurement receiver.
to the chassis.
receiver to release it from the 15 keyhole standoffs (item
chassis.
"Removing the Covers" on
"Removing and Replacing the
7-7.
"Removing and Replacing the A18
"Removing and Replacing the
7-20.
7-13.
"Removing and Replacing the
①
), that secure the bottom of the midplane
➁
) that secure the left side bracket to the
③
) from each side that secure the midplane
④
) that secure the A14 system motherboard
"Removing and Replacing
⑤
) on the
7-17