Overview
9650-0807-01 Rev. C
Propaq MD Service Manual
123
Defib CPLD
The Defib CPLD provides I/O control for the Pacer circuitry, the defibrillator charging and fire
control circuitry.
Pace/Defib (PD) Micro controller
The PD micro controller communicates with the PP processor on the monitor board to accept
commands to control the defibrillator and pacer. The PD micro controller controls the pacer
current and pulse timing and the defibrillation charging and waveform generation.
Communication between the Monitor and Defibrillator/Pacer boards is routed through the flex
cable connected to J106 of the defibrillator board and J38 on the Monitor board.
Charging Circuit
This is a high voltage step-up inverter that charges the Defib Capacitor. It provides electrical
isolation between the defib output and the system. The charging circuit will charge the Defib
Capacitor to up to 2775V. The Defib Capacitor is connected to the Defibrillator/Pacer board
through the 2-wire cable connected to J119.
Fire and Relay Circuit
The fire circuit employs high voltage switching devices to deliver a biphasic waveform to the
patient. Switching devices are utilized to produce a Rectilinear Biphasic
®
waveform. In
addition, relays are located between the fire circuit and the patient for electrical isolation. They
are engaged only when a valid command is set from the Defib CPLD.
Pacer
Pacer circuit delivers pacing pulses under control of the PD micro controller over an isolation
transformer. The pacer circuitry consists of an adjustable constant current power supply, pulse
timing, and current monitoring circuits.
Pads/Paddles ECG Preamplifier
This is a single channel ECG preamplifier paddle pick up that monitors the patient ECG signal
from the Defib paddles (or pads). It digitizes this signal and delivers it to the PP processor via
the PP interface. This preamp is a simplified version of the 3/5/12 Lead ECG utilized on the
Monitor Board.
Paddle Interface
Paddle interface circuitry detects analog voltage levels to decode switches and ID resistors of
the standard ZOLL paddles and internal paddles. The paddle set interface is connected to J115
of the Processor-Bridge-Pace PCB.
Printer
Propaq MD uses an internal thermal printer of 80 mm paper size that is built into the Defib
section of the enclosure. Communications with the printer is bi-directional, serial, (Main CPU
to/from printer) and complies with the software/hardware interface of the internal printer.
Communications are implemented using hardware Universal Asynchronous Receiver.
Transmitter (UART). The printer is controlled by the MP and is connected through a cable to
J46 and J49 of the Monitor board.
Summary of Contents for Propaq MD
Page 1: ...Propaq MD Service Manual 9650 0807 01 Rev C...
Page 6: ...TABLE OF CONTENTS iv www zoll com 9650 0807 01 Rev C...
Page 64: ...58 www zoll com 9650 0807 01 Rev C This page intentionally left blank...
Page 102: ...96 www zoll com 9650 0807 01 Rev C This page intentionally left blank...
Page 108: ...CHAPTER 4 REPLACEMENT PARTS 102 9650 0807 01 Rev C Pictures and Diagrams Picture 1 Picture 2...
Page 109: ...Overview 9650 0807 01 Rev C Propaq MD Service Manual 103 Picture 3 Picture 4...
Page 110: ...CHAPTER 4 REPLACEMENT PARTS 104 9650 0807 01 Rev C Picture 5 Picture 6...
Page 111: ...Overview 9650 0807 01 Rev C Propaq MD Service Manual 105 Picture 7 Picture 8...
Page 112: ...CHAPTER 4 REPLACEMENT PARTS 106 9650 0807 01 Rev C Picture 9 Picture 10...
Page 113: ...Overview 9650 0807 01 Rev C Propaq MD Service Manual 107 Picture 11 Picture 12...
Page 114: ...CHAPTER 4 REPLACEMENT PARTS 108 9650 0807 01 Rev C Picture 13 Picture 14...
Page 115: ...Overview 9650 0807 01 Rev C Propaq MD Service Manual 109 Picture 15 Picture 16...
Page 116: ...CHAPTER 4 REPLACEMENT PARTS 110 9650 0807 01 Rev C Picture 17 Picture 18...
Page 117: ...Overview 9650 0807 01 Rev C Propaq MD Service Manual 111 Picture 19 Picture 20...
Page 118: ...CHAPTER 4 REPLACEMENT PARTS 112 9650 0807 01 Rev C Picture 21 Picture 22...
Page 119: ...Overview 9650 0807 01 Rev C Propaq MD Service Manual 113 Picture 23 Picture 24...
Page 120: ...CHAPTER 4 REPLACEMENT PARTS 114 9650 0807 01 Rev C Picture 25 Picture 26...
Page 121: ...Overview 9650 0807 01 Rev C Propaq MD Service Manual 115 Picture 27 Picture 28...
Page 122: ...CHAPTER 4 REPLACEMENT PARTS 116 9650 0807 01 Rev C Picture 29 Picture 30...
Page 123: ...Overview 9650 0807 01 Rev C Propaq MD Service Manual 117 Picture 31 Picture 32...
Page 124: ...9650 0807 01 Rev C Propaq MD Service Manual 118...
Page 134: ...128 9650 0807 01 Rev C This page intentionally left blank...
Page 138: ...132 9650 0807 01 Rev C This page intentionally left blank...
Page 142: ...This page intentionally left blank...