Silva NX2 - TROUBLE SHOOTING - COMPASS TRANSDUCER 35°

1021TrubShotNX2.doc Page 1 Latest update: 14 Feb -03
10.21 TROUBLE SHOOTING - TEST WAVE FORMS COMPASS
TRANSDUCER 35°
Fault
indication
Check
signal at:
Possible
reason if not
Correct
waveform
DMM test. Oscilloscope
Correct wave form
No output
signal
TP 1 Defect V1, D3
or LC 1
+12 V
No output
signal
TP 2 Defect U1 +8 V
No output
signal
TP 3
U 2 Pin 1
and U4 pin
6
Defect U2
AC 1,4 V
No output
signal
TP 4+ 5
U 4 Pin 3
resp. pin 5
No
Not
possible.
(pulse)