Table of Contents
Advertisement
38
Calibration
5. Reposition the tube to view the brightest area (now dim) and simultaneously a lighted
area (pixels on). Adjust RP7 clockwise until the background area just begins to
illuminate.
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
PIN 1
TP35
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 Encore following equipment alerts.
6. Adjust RP7 to 5.000 V ± 0.010 V dc.
7 .
Refer to the table below and check the dc supply voltages using the DMM.
Table 11. Main Power Supply Voltage Checks
Supply Voltages
Non-isolated
+15
–15
Isolated
+VR
+VS
–VS
"Repair Procedures"
TP1
P6 PIN 10
U1
U3 U5
P5
TP13
TP25
TP23
TP33
TP31
PT1
TP41
RP2
TP45
TP47
TP49
Ref. Lead
Pos. Lead
TP39
TP3
TP39
TP11
TP43 or TP1
TP9
TP43 or TP1
TP5
TP43 or TP1
TP21
Welch Allyn Propaq Encore Vital Signs Monitor
on page 47 for instructions, if necessary.)
RP4
TP5
TP7
TP15
TP9
TP17
TP21
U55
TP27
PIN 1
RP5
TP43
TP37
U109
(DAP)
TP51
Voltage Limits
+14.7 to +15.3
–14.8 to -15.5
+4.91 to +5.09
+6.58 to +7.15
-6.65 to -7.15
TP3
TP11
RP7
TP 19
P1
J4 PIN 26
J4
TP29
TP39
RP6
0696-09
Advertisement
Table of Contents
