Agilent Technologies N5230A, Service Manual, Page: 194 / 262

7-12 Service Guide N5230-90014
Repair and Replacement Procedures PNA Series Microwave Network Analyzers
Removing and Replacing the Display Inverter Board and the Display Lamp N5230A
Removing and Replacing the Display Inverter Board and
the Display Lamp
Tools Required
• T-10 TORX driver (set to 9 in-lb)
• T-20 TORX driver (set to 21 in-lb)
• Small jeweler’s screwdriver
• 5/16 inch open-end torque wrench (set to 10 in-lb)
• ESD grounding wrist strap
Pre-removal Procedure
1. Disconnect the power cord.
2. Remove the front panel assembly. Refer to “Removing and Replacing the Front Panel
Assembly” on page 7-8 .
3. Remove the display assembly. Refer to “Removing the A2 Display Assembly” on page
7-10 .
Removing the Display Inverter Board
Refer to Figure 7-4 for this procedure.
1. Disconnect the ribbon cable (item
①
) and the display lamp cable (item
②
) from the
display inverter board.
2. Lift the inverter retention tabs (item
③
) with slight pressure and rotate the display
inverter board (item
④
).
3. Lift the display inverter board (item
④
) out of the slot.
NOTE Stop now if you are only removing the display inverter board. Replace the
board and reverse the removal procedure.
Removing the Display Lamp
Refer to Figure 7-4 for this procedure.
1. Remove the display lamp cable (item
②
) from the display inverter board (item
④
).
2. With a T-10 TORX driver, remove the four screws (item
⑤
) on the display back panel
and then lift the panel off.
3. Remove the four display bumpers (item
⑥
).
4. To gain access to the display lamp, rotate the top of the display outward slightly.