Main/Vna Pcb Assembly Replacement; Fan Assembly Replacement - Anritsu S412E Maintenance Manual

Chapter 7 — Assembly Replacement
7-8

Main/VNA PCB Assembly Replacement

This procedure provides instructions for removing and replacing the Main/VNA PCB Assembly.
1. Open the case as described in
2. Remove the PCB Assembly from the front panel as described in
Replacement".
3. Remove the SPA board as described in
4. Remove the GPS board as described in
When ordering the Main/VNA PCB Assembly all options that are installed on the instrument must be
Note
stated on the order.
5. Remove the Signal Generator board as described in
on page 7-8
6. Installation is the reverse of removal.
7-9

Fan Assembly Replacement

This procedure provides instructions for removing and replacing the Fan Assembly.
1. Open the case as described in
2. Remove the Main/VNA PCB assembly from the front panel as described in
Replacement".
3. Remove the 3 screws and nuts holding the Fan Assembly to the LCD Assembly housing. Refer to
(Figure 7-12).
Note The fan connector cable is routed through the LCD Assembly housing
Figure 7-12. Front Panel Keypad Bezel
4. Reverse the above steps to install the replacement Fan Assembly.
S412E MM
Section 7-2 "Opening the S412E
Section 7-4 "SPA Assembly
Section 7-5 "SPA and MB/VNA N Connector
Section 7-7 "Signal Generator Replacement"
Section 7-2 "Opening the S412E
PN: 10580-00324 Rev. N
7-8 Main/VNA PCB Assembly Replacement
Case".
Section 7-3 "PCB Assembly
Replacement".
Case".
Section 7-3 "PCB Assembly
Fan Assembly
Fan Connector cables
go though the LCD
Assembly housing
Replacement".
7-11