Philips M3921A - Disassembly Procedures (A1); Closed Case Disassembly Procedures

Disassembly Procedures (A1)
Chapter 6 - Disassembly Guide 63
Disassembly Procedures (A1)
Closed Case Disassembly Procedures
This section describes the items that can be removed without disassembling
the main case of the A1 monitor.
Procedure to remove the battery from Models M3921A and
M3923A when a temperature module is not installed:
1. Use a Phillips-head screwdriver to remove the two screws fastening the
battery cover to the rear case.
2. Remove the battery cover.
3. Disconnect the spade terminal connectors from the battery terminals.
Caution During reassembly, pay particular attention to the polarity
of the battery cable before reattaching. The polarity is
marked on the circuit board. Red connects to the +ve
terminal, black connects to the –ve terminal. If battery cable
polarity is reversed, it is likely that circuit damage will
occur.
4. Remove the battery.
Battery
pad