Main Power Supply Adjustments - Welch Allyn PROPAQ CS Service Manual

48 Calibration

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
Figure 3. Analog PCB measurement and adjustment locations
)correct locations
P5
P5
PIN 1
TP35
TP41
TP45
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.
"Repair procedures"
TP1
P6 PIN 10
U1
P6
P7
TP23
TP31
RP2
PT1
TP49
TP47
on page 59 for instructions, if necessary.
U5
TP5
U3
TP7
TP13
PIN 1
U55
TP27
TP25
RP5
TP37
TP43
TP51
Welch Allyn Propaq CS Vital Signs Monitor
RP4
TP3
T1
TP11
TP9
TP15
TP17
TP19
J4
TP28
TP39
RP6
U109
RP7
P1
TP29