Welch Allyn PROPAQ CS - Manual (Page 78)

74 Repair procedures Welch Allyn Propaq CS Vital Signs Monitor
6. Gently lift the Analog Board up from the Front Chassis.
When installing the Analog Board:
• Blow out any dust and particulates from the Board using pressurized de-ionized gas
before installing it.
• Align the Board so that P4 correctly plugs into J4.
• Torque the three shorter screws holding the Analog Board to 3.8 to 4.2 in-lb (0.43 to
0.47 N-m).
• Torque the two longer screws passing through the shield to secure the Analog Board
to 1.0 ± 0.1 in-lb (0.1 ± 0.01 N-m).
• Attach the Interface Chassis to the Front Chassis, connecting the Nurse Call Cable if
present.
• Torque the five screws in the Interface Chassis to 8.0 ± 0.4 in-lb (0.9 ± 0.04 N-m).
Caution The Analog and Digital Boards are connected together on the right side
by connectors P4 and J4. It may be necessary to use two flat blade screwdrivers
to gently pry the boards apart.
Place the screwdriver blades as close to the edge of the board as possible to
avoid contacting components on the board. Components are located as close as
1/8" to the edge of the board. Use extreme caution. Try not to flex the board
when prying.