CHAPTER 13 MAINTENANCE
13–6 www.zoll.com 9650-0904-01 Rev. N
4. When the Ready tone sounds, press the SHOCK button on the front panel until the shock is
delivered.
The unit displays the message 30J TEST OK and displays a shock count of 1.
If the message 30J TEST FAILED appears, contact appropriate technical personnel or the
ZOLL Technical Service Department.
Pacer Testing
1. Turn the Mode Selector to ON.
2. Press the Manual Mode softkey.
Note: If the CONFIRM MANUAL MODE message displays, press the Confirm softkey to
enter the Manual mode of operation.
3. Turn the Mode Selector to PACER.
4. Turn the PACER RATE control to 150 ppm, then press the RECORDER button.
On the stripchart, verify that pacing stimulus markers
( ) occur approximately every
centimeter (10 small divisions or 2 large divisions).
5. Press and hold the 4:1 button.
The frequency of the pacing stimulus markers decreases, occurring approximately every 4
centimeters (40 small divisions or 8 large divisions).
6. Turn the PACER OUTPUT control to 0 mA.
There should be no CHECK PADS or POOR PAD CONTACT messages.
7. Disconnect the OneStep cable from the test port or OneStep electrodes, and slowly turn the
PACER OUTPUT control to 16 mA or more.
The messages CHECK PADS and POOR PAD CONTACT appear alternately. The pace alarm
sounds, and the Clear Pace Alarm softkey flashes.
8. Reconnect the OneStep cable, and press the Clear Pace Alarm softkey.
The messages CHECK PADS and POOR PAD CONTACT disappear, and the alarm tone
stops.
Recorder Check
1. Turn the Mode Selector to ON.
2. Press the Manual Mode softkey.
Note: If the CONFIRM MANUAL MODE message displays, press the Confirm softkey to
enter the Manual mode of operation.
3. Select the ECG lead.
4. Check the printer for an adequate supply of paper, then press the RECORDER button.
5. Press and hold the SIZE button for at least 2 seconds.
A calibration pulse of 1 mV appears on the display while the button is held. The amplitude
of the calibration pulse is independent of the SIZE setting.
6. Inspect the recorder waveform for uniformity and darkness.
7. Inspect for uniformity of annotated characters and completeness of words.
8. Check the printer speed by verifying that the resulting waveform is:
• 2.5 mm ±0.5 mm wide
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