ZOLL M Series Defibrillator Rev R - Manual (Page 137)

M Series Service Manual
127
Internal Discharge Resistor Module
The Internal Discharge Resistor Module contains the internal discharge resistor, and a means for dissipating the heat
generated by the internal discharge.
AC/DC Charger Module
The AC/DC Power/Battery Charger provides a universal (IEC 320) connection to the AC mains or to a DC source,
input line filtering and double-pole fusing (for a mains input), AC-DC and DC-DC conversion and isolation barrier
between the M Series and power sources. This module also provides the power necessary to run the M Series in any
mode of operation, as well as providing additional charging current to the battery. When the M Series is turned off but
connected to an external AC or DC source, the charger module controls battery charging currents and voltages needed
to charge the M Series battery. These voltages and currents are controlled in response to the main CPU signals that
manage the battery charging process.
System Interconnect Module
The system interconnect PWBA receives signals from the Main System Board and in turn controls operation of the
stripchart recorder and PCMCIA functions.
XPACE_SEL: Hardware only signal from the front panel switch that is at '0'
during pace. Used as an additional safety interlock on the solid
state patient relay so that operation of the relay during pacing is
additionally disabled.
L OGIC C ONTROL
S IGNAL
O PERATION