Tektronix 071-1844-00 I/OB oard, Main Fans, Main Board

Maintenance
4-10 DPO4000 Series Service Manual
Follow these steps to removethe I/O board. You need to have previously
removed therear case and power supply module. Use TORX T-15 screwdriver
tip. See Figure 5--4on page 5--10.
1. Remove the 5 screwsthat hold the I/O board to the chassis.
2. Lift straight up to remove.
Follow these steps to removethe side fan assembly. You needto have previously
removed therear case, power supply assembly, and I/O board. Use a TORX T-15
screwdrivertip. S eeF igure5 --5 on page 5--12.
1. Remove the 6 screws that hold the side fans to the chassis.
2. Disconnect thetwo fan connectors from the main board.
3. Slide the fan assemblyout and away from the chassis.
Follow these steps to removethe main board. You need to have previously
removed therear case, power supply, I/O board, and sidefans. Use a TORX T-15
screwdrivertip. S eeF igure5 --5 on page 5--12.
1. Disconnect the display cablefrom the main board.
2. Disconnect thebacklight cable from the inverter board.
3. Remove 13 screwsfrom the main board that connect it to the chassis.
4. Lift the main boardup to remove.
Inverter board. Follow these steps to remove the inverter board from the main
board. Youmust have previously removed the main board. Use a TORX T-15
screwdrivertip. S eeF igure5 --5 on page 5--12.
1. Disconnect the inverterboard cable from the main board.
2. Remove the inverterboard from the plastic bracket.
3. Remove the 2 screwsthat hold the inverter board bracket to the main board.
4. Remove the inverterboard bracket from the main board.
I/OB oard
Main Fans
Main Board