Compaq AP550 Compaq Professional Workstation AP550 Maintenance & Service G - Page 60

Serial Port Cover Connector, Unplug the serial port cover connector from the system board.

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Removal and Replacement Procedures 3-27 Serial Port Cover Connector To remove the cover plate for serial ports Com1 and Com2 (158274-001): 1. Perform the steps in the "Service Preparations" section as previously shown. CAUTION: Before removing the workstation access panel, ensure that the workstation is turned off, all cables are disconnected from the back of the workstation, and the power cord is disconnected from the grounded AC outlet. 2. Remove the workstation access panel. 3. Rotate the workstation to the desktop position. 4. Unplug the serial port cover connector from the system board. Figure 3-26. Removing the serial port cover connector 5. Remove the screw holding the serial port cover connector to the chassis, and lift the plate out of the chassis. To replace the serial port cover connector, reverse the above procedure. NOTE: The connector is keyed; therefore, locate the key pin header on the system board when reattaching the serial port cable.

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Removal and Replacement Procedures
3-27
Serial Port Cover Connector
To remove the cover plate for serial ports Com1 and Com2 (158274-001):
1.
Perform the steps in the “Service Preparations” section as previously shown.
CAUTION:
Before removing the workstation access panel, ensure that the workstation is
turned off, all cables are disconnected from the back of the workstation, and the power cord is
disconnected from the grounded AC outlet.
2.
Remove the workstation access panel.
3.
Rotate the workstation to the desktop position.
4.
Unplug the serial port cover connector from the system board.
Figure 3-26.
Removing the serial port cover connector
5.
Remove the screw holding the serial port cover connector to the chassis, and lift the plate
out of the chassis.
To replace the serial port cover connector, reverse the above procedure.
NOTE:
The connector is keyed; therefore, locate the key pin header on the system board when
reattaching the serial port cable.