Welch Allyn 53 Service Manual page 55

Disassembly Procedure
2. Remove the four screws securing the main board to the rear chassis.
3. Pull the lower right-hand corner of the main board away from the rear chassis, just far
enough to free the RS232 connector housing on the main board from the RS232 connector
slot on the rear chassis.
Vital Signs Monitor Series 300
Remove the Main Board from the Rear Chassis Assembly
RS232 connector slot
on the rear chassis
RS232 connector housing
on the main board
Lower right-hand corner
of the main board
55
4 screws securing the
main board
Service Manual