Maintenance Schedule & Procedures
3–8 www.zoll.com 906-0731-04-01 Rev. C
An Overview of Discrete Tests
The tables below provide a technical overview of the individual discrete tests performed during routine calibration.
The order of these tests may vary both by sequence and RCS software version. Note there are separate tables for
RCS software version 7 and version 8.
Test Name Description
Comm RAM and Bootloader Check
The TCE verifies functionality of the EMV Communication Interface (Rx and Tx signals),
CPU RAM interface and RAM functionality (address and data lines), and the Bootload
interface (boot select, reset and watchdog disable), as well as the ability to communicate
with the SPM through the CPU board (SPM Rx, Tx, bootselect, and reset).
Power Switch Check
The TCE checks the functionality of the power switch. The switch is double pole, double
throw, so each pole will be checked.
EMV Self Check Check of the ventilator’s core hardware, software and communications during power up.
LCD Contrast Set The TCE confirms contrast adjustability by prompting the operator to adjust the contrast.
LCD Visual Inspection
The TCE guides an operator through a visual inspection of the LCD and acquire operator
confirmation that the display is defect free.
Button Check
Ability to verify functionality of all the buttons by having the operator physically press the
buttons and using the device communication interface to detect and indicate the button
is being pressed
Total Power Failure Alarm Check The TCE verifies the 120s total power failure alarm circuitry.
LED Check
The TCE checks that all Front Panel LED's are functional and the correct color by sending
test mode commands to the device to selectively illuminate the LED being tested
Encoder Check
The TCE checks that the rotary dial is functional by having the operator physically turn the
dial and using the device communication interface to detect and indicate encoder
increment and decrement.
Buzzer Check Operator confirms the buzzer is audible:
Pulse Ox Sp02 & Heart Rate
Masimo Tester Model # 1593 (or equivalent simulator) is used to test the Pulse Oximeter
SpO2 and Heart Rate on the 731 series ventilator.
SPM Self Check
The device software continuously checks to see that the hardware has not failed. The
SPM software checks for presence of specific alarms, in event an alarm is active, and the
TCE indicates a failure.
SPM Blink
Operator confirmation that Alarm #1173, Red LED's and buzzer are activated within 15
seconds.
TSI Calibration Check
The date of the last calibration, the ambient temperature and the altitude of test are all
properties checked for this test.
Calibration Check Barometric
Pressure
The TCE checks to see that the barometric pressure sensor in the device is accurate.
Calibration Check Compressor
System
The TCE performs the Calibration Check to evaluate the Airflow, Intake and RPM to
determine a PASS/FAIL result for the Compressor System.
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