Service manual

1-1
Introduction
This chapter introduces you to the M1770A PageWriter 200i/300pi, M1771A PageWriter
200, and M1772A PageWriter 100 cardiographs and lists their technical specifications.
These cardiographs are only to be serviced by HP qualified personnel.
Safe and effective use of medical instrumentation requires periodic inspection and
preventive maintenance. Perform the preventive maintenance procedures in Chapter 2 of
this manual at required intervals to ensure satisfactory instrument performance.
The cardiographs use a thermal printhead to record waveforms and label the ECG report.
The paper supplied with the cardiographs is a thermal paper designed to work with this
printhead and with the photo detector used to advancing the paper.
Hewlett-Packard guarantees the performance of the cardiographs only when used with
Hewlett-Packard supplies, accessories, and paper that meet or exceed Hewlett-Packard
specifications.
0PageWriter 100, 200, 200i, and 300pi Series Cardiographs
The M1770A PageWriter 200i/300pi is Hewlett-Packard’s economical, interpretive
cardiograph. The M1771A PageWriter 200 is the economical, non-interpretive
cardiograph. The M1772A PageWriter 100 is the most economical, non-interpretive
cardiograph. The cardiograph contains the user controls, the printer, and all the processing
circuitry. All models use the same enclosure. The M1705B cart is designed for these
cardiographs. Figure 1-1 shows the M1770A mounted on the cart. Option #A05 provides
transmission and storage capability for the M1770A and M1771A. The StressWriter
option provides capability for communication between a PageWriter 100/200/200i/300pi
cardiograph and a StressWriter system.
WARNING
NOTE