I/O Port Slot
I/O Port Door
5 PCBA
Mounting Screws
MOTOR Connector
I/O Port Cable Plug
KCALL
Connector
I/O Port Lead Screw
I/O Port PCBA
I/O Port Axis Motor
I/O Full: I/O Clear
Sensor Emitter PCBA
Note:
The LED’s Cable
Plug is located underneath
the I/O Port PCBA
Bottom View
Figure 7-21 I/O Port Assembly
2.
Gently turn the I/O port leadscrew by hand, to move the I/O port slot away from
the five PCBA mounting screws (Figure 7-21).
3.
Disconnect the Motor cable from the I/O port PCBA at the MOTOR connector.
4.
Disconnect the Call switch cable from the I/O port PCBA at the KCALL connec-
tor.
5.
Turn the I/O port assembly over and unplug the LEDs cable.
6.
Remove all five PCBA mounting screws (Figure 7-21).
7.
Lift the I/O port PCBA out of the I/O port assembly.
7.10.2 I/O Port PCBA Replacement
This procedure assumes that the I/O port PCBA was removed in Section 7.10.1
1.
If necessary, gently turn the I/O port leadscrew by hand, to move the I/O port
slot away from the five PCBA mounting screws holes in the I/O port assembly's
frame (Figure 7-21).
2.
Lower the I/O port PCBA into the I/O port assembly and install all five PCBA
mounting screws (Figure 7-21).
3.
Connect the Motor cable at the MOTOR connector on the I/O port PCBA (Figure
7-21). Note that the connector is keyed for correct orientation.
4.
Connect the Call switch cable at the KCALL connector on the I/O port PCBA
(Figure 7-21). Note that the connector is keyed for correct orientation.
7-32
Field–Replaceable Units (FRUs)
501380 Rev. B
