TELEDYNE API T703U - Figure 8-4: Location of DC Power Test Points on Relay PCA; Table 8-6: DC Power Test Point and Wiring Color Codes; Table 8-7: DC Power Supply Acceptable Levels

General Troubleshooting & Service Teledyne API T703/T703U Calibrator Operation Manual
164
associated test points on the relay PCA follow a standard color-coding scheme as
defined in the following table.
TP1 TP2 TP3 TP4 TP5 TP6 TP7
DGND +5V AGND +15V -15V +12R 12V
Figure 8-4: Location of DC Power Test Points on Relay PCA
Table 8-6: DC Power Test Point and Wiring Color Codes
NAME
TEST POINT#
TP AND WIRE COLOR
Dgnd
1
Black
+5V
2
Red
Agnd
3
Green
+15V
4
Blue
-15V
5
Yellow
+12R
6
Purple
+12V
7
Orange
A voltmeter should be used to verify that the DC voltages are correct per the
values in the table below, and an oscilloscope, in AC mode, with band limiting
turned on, can be used to evaluate if the supplies are producing excessive noise (>
100 mV p-p).
Table 8-7: DC Power Supply Acceptable Levels
POWER
SUPPLY
VOLTAGE
CHECK RELAY PCA TEST POINTS
MIN V
MAX V
FROM TEST POINT
TO TEST POINT
07223D DCN7107