Removing And Replacing Front Panel Subassemblies - Agilent Technologies N5230A Service Manual

Repair and Replacement Procedures

Removing and Replacing Front Panel Subassemblies

Removing and Replacing Front Panel Subassemblies
Tools Required
• T-10 TORX driver (set to 9 in-lb)
• T-20 TORX driver (set to 21 in-lb)
• 5/16 inch open-end torque wrench (set to 10 in-lb)
• ESD grounding wrist strap
Refer to Figure 7-3 for the following procedures.
Pre-removal Procedure
1. Disconnect the power cord.
2. Remove the front panel assembly. Refer to
Assembly" on page
3. Disconnect the display ribbon cable (item
the A3 front panel interface board.
Removing the A2 Display Assembly
1. With a T-10 TORX driver, remove the four retaining screws (item
assembly.
2. Remove the display assembly from the front panel.
Removing the A3 Front Panel Interface Board
1. Remove the round knob (RPG) from the front panel by gently pulling the knob forward.
2. With a T-10 TORX driver, remove the seven screws (item
interface board.
3. From the bottom of the frame, lift the A3 front panel interface board up at an angle
until the board clears the frame. Disconnect the keypad ribbon cable (item
A3 front panel interface board and lift out the board.
Removing the A1 Keypad Assembly
1. Remove the A3 front panel interface board as instructed above.
2. From the rear of the front panel assembly, remove the center retaining screw (item
Bend the bottom keypad assembly tabs away from the frame and push the A1 keypad
assembly out of the frame.
7-10
7-8.
PNA Series Microwave Network Analyzers
"Removing and Replacing the Front Panel
①
) and the display lamp cable (item
④
) from the front panel
Service Guide N5230-90014
N5230A
②
) from
③
) from the display
⑤
) from the
⑥
).