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48 Calibration Welch Allyn Propaq CS Vital Signs Monitor
Main power supply adjustments
The following procedures assume you are continuing from the Recharger Board
calibration. If not, refer to the setup procedures provided at the beginning of this section.
1. Turn off the monitor.
2. Remove the metal shield from the Analog Board. (Note the two different screw sizes;
refer to “Repair procedures” on page 59 for instructions, if necessary.
Figure 3. Analog PCB measurement and adjustment locations
)correct locations
3. Connect the DMM reference lead to TP39.
4. Connect the DMM positive lead to TP29.
5. Turn on the monitor.
Press any of the lower five buttons to reset the monitor following equipment alerts.
6. Adjust RP7 to 5.000 ±0.010 V dc.
7. Refer to the table below and check the dc supply voltages using the DMM.
P5
P6
P7
TP1
U1
U3
TP13
U5
TP5
TP7
TP9
TP15
TP17
RP4
T1
TP3
RP7
TP11
P1
J4
TP29
TP28
RP6
TP39
TP19
TP41
TP47
TP45
PT1
RP2
TP49
TP31
TP23
TP25
U55
TP27
RP5
TP37
TP51
TP43
U109
TP35
P5
PIN 1
PIN 1
P6 PIN 10