Welch Allyn 53 Service Manual page 48

Separate the Front and Rear Chassis
Housing
Screws
2. Place the unit upright, with the front of the unit facing you.
3. Tilt the top of the front chassis away from the rear chassis while lifting the front chassis,
freeing the front chassis from the corner tab feature on the bottom left-hand corner of the
rear chassis.
On reassembly, engage the tab and the tab receiver before attempting to align
and close the chassis halves.
Service Manual 48
Disassembly Procedure
Vital Signs Monitor Series 300