Anritsu S412E - LCD Backlight PCB Removal and Replacement

7-11 LCD Backlight PCB Removal and Replacement Chapter 7 — Assembly Replacement
7-14 PN: 10580-00324 Rev. N S412E MM
6. Disconnect the LCD backlight cable from the LCD backlight PCB.
7. Disconnect the LCD cable from the side of the LCD.
8. Carefully remove the LCD.
9. Reverse the above steps to install the replacement LCD.
7-11 LCD Backlight PCB Removal and Replacement
This procedure provides instructions for removing and replacing the S412E LCD backlight PCB.
1. Open the case as described in Section 7-2 “Opening the S412E Case”.
2. Remove the Main/VNA PCB assembly from the front panel as described in Section 7-3 “PCB Assembly
Replacement”.
3. Perform Step 1 through Step 4 of Section 7-10 “LCD Assembly Replacement”.
4. Disconnect the LCD backlight cable from the LCD backlight PCB.
5. Use a Phillips screw driver to remove the two screws securing the LCD backlight PCB to the Main PCB
assembly (Figure 7-16).
6. Carefully remove the LCD Backlight PCB.
7. Reverse the above steps to install the replacement LCD backlight PCB.
Note
Pay attention to the routing of the LCD Backlight Cable. The cable must be positioned so it is not
pinched when the unit is reassembled.
Figure 7-16. Replacing the LCD PCB
Note
Pay attention to the routing of the LCD Backlight Cable. The cable must be positioned so it is not
pinched when the unit is reassembled.
Remove 2 screws to replace LCD PCB
LCD Backlight
Cable
Ribbon Cable
Connects to
Keypad PCB