5622 Other Error Codes

If an error code occurs that is not listed in Section 5.6.2.1, take the following 1. Turn the monitor off, then on again. 2. If the error code still appears, take the monitor out of service and contact Nellcor Puritan Bennett Technical Services or your local Nellcor Puritan Bennett representative for advice on remedial action. 3. If the monitor powers up and the error code does not recur, enter the Diagnostic Mode and invoke the Error Code screen. Examine the record of the last 10 error codes...

75 Main Pcb Assembly

NIBP Pneumatic (Assembly) with Tubing, and Fittings Note The Main PCB for all of the NPB-3900 models has jumpers which must be set correctly so that the User Interface software is configured to support the measuring parameters of each particular model . There are two jumpers, marked JP101 and JP102, located immediately below the NIBP valve. Ensure that the jumpers are installed as noted in the table which follows Table 7-5 Main PCB Jumper Configuration Table 7-5 Main PCB Jumper Configuration

A42 Temperature Probe

The temperature sensor is an accurate thermistor in the probe whose resistance varies with temperature. The temperature circuit applies a constant voltage (0.4551 volts) to the thermistor at all times. The current through the thermistor varies with temperature based on its resistance value. The temperatures (including ambient and over temperature) to be measured by the NPB-3900 range from 16 C to 44.5 C (60.7 F to 112.1 F). The chart shows the probe resistance and corresponding current at room...

63disassembly Flow Charts

The charts have been developed for use with all models of the NPB-3900 family. Therefore, some disassembly procedures will not be applicable to model configurations of less than the full complement of functions. In most cases, the relevant subassemblies will not have been installed, and it will be apparent that the pertinent procedures will not apply. However, when a temperature-measuring function is involved, a different hardware configuration of the rear-case assembly is shown in the flow...

Switchposition

Set the NIBP simulator to simulate a pressure setting of 120 80 mmHg and heart rate of 80 bpm. 4. Ensure that the monitor is not connected to AC power. With the NPB-3900 turned off, press the ON STANDBY button and verify that the battery icon appears at the bottom of the display after the power-on self-test is completed. The boxes in the battery icon should all be filled, indicating the battery is charged. Verify that the monitor is responding to the SpO2 simulator signal and that the audible...

3343 Verification of Pneumatic System NPB3900

Tests in paragraphs 3.3.4.3.1 through 3.3.4.3.5 verify the functionality of the NPB-3900 pneumatic system. These tests were designed to use the Bio-Tek BP Pump noninvasive blood pressure simulator. The internal test volume of the Bio-Tek simulator is 250 cm, which is used to calculated the inflation deflation rate periods. The Bio-Tek simulator, or any equivalent NIBP simulator, is required to perform these tests. The NPB-3900 must be placed in Diagnostic Mode, with the NIBP Test screen active...

A123 Oxichip Circuit

At the heart of the SpO2 function is the Oxichip integrated circuit U1, which provides variable LED drive, photodetector amplification, variable gain, demodulation, filtering, and signal conditioning for the analog-to-digital converter ADC input. The Oxichip circuit generates its own LED modulation and photodetector demodulation timing. It requires a single clock at x, the desired LED switching frequency. A block diagram of the Oxichip is shown on sheet 2 of the schematic. The Oxichip circuit...

561 Power

Table 5-2 lists recommended actions to address power problems. 1. With external power supply connected, the green 1. Ensure that the external power supply input PS-120 V or PS-240V is plugged into an operational AC outlet of the appropriate voltage and frequency. 2. Disconnect the power supply output cable from the monitor. Measure the voltage across pins 1 and 4 of output connector. If the open circuit voltage does not measure approximately 17 3 V RMS, replace the power supply. 3. If the...

3342 Operation with an ECG Simulator NPB3930 NPB3940

With the monitor off, connect the ECG leads to the appropriate jacks on the ECG tester. 2. Connect the leads to the CE-10 ECG cable. Connect the CE-10 to the ECG input port on the NPB-3900. Set the ECG tester as follows NOTE The accuracy of the monitor's ECG measurements is 5 bpm. In the procedure below, add the tolerance of the simulator to the acceptable range of readings. 3. Press the ON STANDBY button to turn the monitor on. After the normal power-up sequence, verify the following...

Nellcor Puritan Bennett NPB3900 Patient Monitor

To contact Nellcor Puritan Bennett's representative In the United States, call I-8OO-NELLCOR or 510 463-4000 outside the United States, call your local Nellcor Puritan Bennett representative. Caution Federal law U. S. restricts this device to sale by or on the order of a physician. 0123 1998 Nellcor Puritan Bennett Inc. All Rights Reserved Nellcor Puritan Bennett Inc. 4280 Hacienda Drive Pleasanton, California 94588 U.S.A. Nellcor Puritan Bennett Inc. 2200 Faraday Avenue Carlsbad, California...