Novametrix Medical Systems MARS PO2 TECH 2001, Руководство по обслуживанию

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Rev. 01 Model 2001 Service Manual
29
Section 7
Electronic Tests
The Electronic Tests verify the calibration and operation of the electronic circuits within the
Model 2001 Pulse Oximeter. These tests do NOT need to be performed on a regular
(preventative maintenance) basis. Perform these tests only if the monitor fails to operate as
expected or fails the Functional Tests or the Accuracy Tests. Electronic Tests should be
performed only by qualified service personnel. The Electronic Tests require access to the
internal components of the monitor. Refer to "Assembly Exchanges" on page 40.
This procedure assumes the technician performs each step as indicated—leaving the monitor
in a known state prior to performing the next step. If steps are omitted or performed out of order,
be sure that the monitor is set to the correct state before continuing.
Equipment Required
1. RS232 test fixture, PN: 5479-01
2. Saturation test jack, PN: 5942-00
3. Current limit test fixture, PN: 5693-48
4. Saturation sensor, PN: 8776-00 or equivalent
5. TB500B saturation simulator, PN: 5530-00
6. DMM, Fluke 8840A or equivalent*
7. Oscilloscope, Tektronix Model 2236 or equivalent*
8. Hipot, Hipotronics model HDA5 or equivalent
9. Leakage current test fixture, PN: 9185-48
10. Shorted saturation test jack, PN: 6573-48
*Calibrated and N.B.S. traceable
Procedure
Unless otherwise specified all measurements are with respect to isolated ground. Use the top
of R4 (end closest to IC2) as ground reference.
CAUTION
The Model 2001 contains static sensitive devices. Follow proper grounding procedures when
handling the internal components to avoid damage from static discharge.