Tektronix DPO3000 Series, Service Manual

Page: 46 / 79

Maintenance
Figure 4-2: Reconnecting the fan cable
Fan Follow these steps to remove the fan assembly. You need to have previously
removed the rear case assembly and rear chassis. Use a pair of pliers. (See
Figure 5-2 on page 5-7.)
1. Use a pair of pliers to bend the tabs that hold the fan in the chassis.
2. Slide the fan assembly out and away from the chassis.
3. When reinstalling, dress the fan power cable carefully. (See Figure 4-3.)
Figure 4-3: Fan cable dress
I/O Board
Follow these steps to remove the I/O board. You need to have previously removed
the rear case assembly and rear chassis. (See Figure 5-2 on page 5-7.)
1. Disconnect the power cable from J104 on the I/O board.
2. Rock the board slightly while pulling straight up to disconnect the board
from the edge connector.
3. Disconnect the cable from J103 on the I/O board and lift the board away.
4. Place the board on a static-free surface.
4–8 MSO3000 and DPO3000 Series Digital Phosphor Oscilloscopes Service Manual