Hillrom Welch Allyn Connex ProBP 3400, Service Manual, Page: 61 / 64

Qty Location Type Size/length Torque Bit type
1 Battery door Shoulder screw M3 x 0.5 3.0 in-lb ±0.5 in-lb #1 Phillips
2 Rear housing Pan head machine
screw
M3 x 0.5 6.0 in-lb ±0.5 in-lb #1 Phillips
4 PCBA mount Plastite #4 x 0.25 4.0 in-lb ±0.5 in-lb Torx T10
Connectors
Connector types
Disassembly and repair procedures require that you disconnect and reconnect the following
connector types:
•
Locking (squeeze-release) : Locking connectors use a latching mechanism to prevent
accidental disconnection during assembly and use. The latch is located on one end of a tab so
it may flex and lock into place when coupled with its matching connector. The tab provides a
lever to release the latch. When disconnecting, squeeze to provide pressure on the tab to
unlatch. Some connectors have multiple latches that require you to press multiple tabs to
release.
To remove a locking connector, squeeze the release lever and remove the cable.
To connect a locking connector, push the mating pieces together until the latch locks in place.
• Pressure : Pressure connectors use friction to prevent accidental disconnects.
To remove a pressure connector, grasp each connector mating half and pull the halves apart.
CAUTION Do not use excessive force to disconnect the
connector. Excessive force may result in pulling the mounted
connector off the circuit board.
To connect a pressure connector, grasp each connector mating half and insert one half into
the other.
• ZIF (zero insertion force) : ZIF connectors use a sliding outer piece that latches and unlatches
to secure and release the flex cable. ZIF cables cannot be successfully connected or
disconnected without properly unlatching and latching the sliding outer piece.
CAUTION Do not use excessive force when releasing pressure on
the connector. Excessive force may result in breaking the sliding
outer piece.
To remove a ZIF connector
CAUTION Remove a flex cable only after the ZIF latch is open.
1. Using a suitable tool (for example, a spudger or needle-nose pliers), slide the latching
piece of the connector away from the connector body.
2. Remove the cable.
Service Manual Appendices 57