Edgetech 2000-CSS, User Manual

Page: 94 / 101

6-10 6.0: TROUBLESHOOTING
2000-CSS COMBINED SONAR 0017423_REV_C
The following are the main voltage test points on the Power Distribution board:
SUPPLY TEST POINT RETURN
+5 VDC +/-0.2V TP7 TP12
+12 VDC +/-0.6V TP8 TP12
-12 VDC +/-0.6V TP9 TP12
+27 VDC +/-0.6V TP10 TP12
+48 VDC +/-2.0V TP4 TP5
Table 6-3: Main Voltage Test Points on Tow Fish Power Distribution Board
Other voltages to check on the SSB board and labeled as such are:
SUPPLY
+3.3 VDC +/-0.1
+5 VDC +/-0.2V
+12 VDC +/-0.6V
-12 VDC +/-0.6V
Table 6-4: Other Voltages on SSB Board
6.3.7.4 Test Lights
1. Power Distribution Board.
Monitor the +400 volt D4 and +48 volt D8 LED’s. They should be on steady.
2. SSB Board.
There are two LED’s of interest. ‘LED A’ flashes when 120 kHz is transmitting. ‘LED B’ flashes when
410 kHz is transmitting.
3. SIB Board.
There are four LED’s of interest. They have the following status when the system is operating
properly.
D1 Off D3 (Orange) Flashes at 2 Hz
D2 Off D4 (Green) On
SSB Board Test Points