Welch Allyn 53 Service Manual page 45

Disassembly Procedure
Main Board Connectors
For the best results when disconnecting cables from the main board, disconnect the upper
cables first and work your way to the bottom of the board, in approximately the following
order:
Main-board Connector
(Refer to the drawing of the
main board, on page
J5
J12
J4
J1
J6
J11
J2
J7
J9
J3
J8
J10
(* Denotes optional hardware.)
When reassembling the monitor, connect the cables in reverse order.
Display Board Connector
Connector Connects With
J1 Main board – J5
Printer Board Connectors
Connector Connects With
CN1 Main board – J10
CN2 Fujitsu printer
CN3 Main board – J8
Vital Signs Monitor Series 300
Connects With
57.)
Display board – J1
* Temperature board – J1
Nurse call connector
External RS-232
LCD
Speaker
External DC Input
* SpO board – J2
2
NIBP board
Battery
* Printer data – CN3
* Printer power – CN1
45
Procedures Overview
Service Manual