Testing Printer Operation; Replacing The St80I Thermal Printer Fuse - Philips ST80i Instructions For Use Manual

Maintaining the ST80i System

Testing Printer Operation

After inspecting and cleaning the thermal printer, confirm that the printer is working properly.
To test printer operation
 Using an ECG simulator with the stress testing system, acquire and print ECGs of known
amplitude.
A successfully printed ECG report has the following characteristics:
Printing should be dark and even across the page.

There should be no evidence of print-head dot failure (for example, breaks in printing

forming horizontal streaks).
Paper motion should be smooth and consistent during printing.

Waveforms should appear normal, with proper amplitude, and without distortion or

excessive noise.
Paper should stop with perforations near the tear-bar (indicating proper cue sensor

operation).

Replacing the ST80i Thermal Printer Fuse

The AC fuse needs to be replaced when the AC power on indicator light does not illuminate
when the printer is plugged into AC power.
Figure 5-1
A AC power on indicator light
5-4 ST80i Stress Test System Instructions for Use
AC power on indicator light on ST80i thermal printer