iL Series User Manual
California Instruments
Rev B
73
Step
Procedure
Indication
Action
Swap the suspected faulty
A1, A2, or A3 with a good
A1, A2, or A3 amplifier
module. Check the +/- 15
bias voltages at A10J2.
+15V at pins
1,2,5,6,9,10,13,14,23,24.
-15V at pins 15,19,20.
COM at pins
3,4,7,8,12,15,16,21,22,25,26
.
10
Are all phases
missing?
If Yes, Check 300 VDC rail
from CR1, C1 to F1, F2, and
F3 on A4 mother board.
Check for sine wave at
A6J4-1 to A6J4-2, A6J4-3 to
A6J4-4, A6J4-5 to A6J4-6.
Table 46 : AC Power Source Troubleshooting Procedure
PIN
NO
A10J3
A10J4
A10J5
A10J6
1
12-24 V fans
+15 V
+5 Vsec
+5 V HPIB
2
+24 V
A gnd
D gnd
HPIB gnd
3
+5 Vsec
-15 V
+5 Vunreg
4
+24 V COM
+5
Vsec
5
COM
D gnd
6
2.5
7
UVOV (high true)
8
Phase Loss (low
true)
Table 47 : Pin and Signal Voltages at A10 Connectors
Summary of Contents for iL Series
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