IBM 4247 Maintenance Information page 371

DANGER
Do not connect or disconnect any communication port, teleport, attachment connector, or power cord
during an electrical storm.
Note: Print or obtain from the operator a printout of the current Power on Configuration Setup and the Program
Setup for this printer. Learn how to print these by reviewing the information in "How To Print the Print Test"
on page 160.
1. Put the covers in the service position. See "Removing Covers" on page 275.
2. Remove the attachment card. See "Serial Attachment Card - Model A00" on page 390.
3. Remove the power supply cover.
4. Remove the board fan support.
Figure 113. Board Fan Support
5. Disconnect all connectors from the logic board.
6. Remove the jumper for use on the new board. See Figure 118 on page 377.
Board Fan
Support
Chapter 5. Removals and Adjustments
371