Service manual

50 Servicing the Mainframe Chapter 3

Replacing the

Monitor Board

This section gives guidelines to replace the Monitor Board (E8408-66502).

See Table 3-1 for a replacement part number.

1 Turn off the mainframe and remove the AC power cord.

2 If the mainframe is rack-mounted, remove the mainframe from the

rack and place the mainframe at a static-controlled workstation.

3 Remove mainframe option items as required. See "Removing

Mainframe Accessory Items".

4 Remove the mainframe cover. See "Removing the Mainframe Cover".

5 Follow the steps in Figure 3-4 to disconnect the ribbon cable and

to remove the Monitor Board.

6 Reverse the steps in Figure 3-4 to install a replacement Monitor

Board and to re-connect the ribbon cable.

7 Replace the mainframe cover by reversing the steps in "Removing

the Mainframe Cover".

8 Reinstall mainframe options removed in step 3 OR reinstall the

mainframe in the rack (as required). Reconnect the AC power cord.

Figure 3-4. Removing the Monitor Board

Disconnect the

Monitor Cable

Remove

T8 Screw

Slide Board

Out to Remove