Printer; Pneumatic Valve/Manifold (Pvm); Optical Switch - GE DINAMAP ProCare Service Manual

Printer

Pneumatic Valve/Manifold (PVM)

Optical Switch

2-14
Equipment Overview: Functional Description
The printer receives power from the Main Board and communicates with the
primary processor. Printer presence and print head temperature is indicated by
PR_TH signal to the primary processor. When a print command is sent to the
printer from the primary processor, the following will occur:
PR_CLK signal - transfer the data into print head
PR_DI signal - serial dot to be printed
PR_LAT signal - latch the data stream into the head
PR_ST1-6 - cause the head to print various sections
PR_M1-4 signals - control power sequentially to the two stepper motor
windings
Together these signals (CONTROL DATA) cause the printer to print a graphic
hardcopy of the patient vital sign values and trend data. It also causes the
printer to print a hardcopy of error logging and service record data.
The printer has a built-in sensor to monitor the printer paper presence. When the
printer is out of paper, it sends a PAPER OUT signal to the primary processor.
The PVM assembly consists of a pump, a deflate valve, and a dump valve. The
PVM inflates/deflates the cuff during BP determinations. During normal
operation the PVM is controlled by the primary processor. If a failsafe mode or
overpressure condition occurs, the secondary processor provides the
appropriate control signals to insure a safe condition, where the cuff vents to
ambient atmosphere pressure.
The optical switch indicates whether the temperature probe is inserted in the
probe holder or not. The Main Board powers the switch.
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DINAMAP ProCare Monitor Service Manual
2009381-001
Revision C