Filter
Top Products
Service Addendum10
Overall Troubleshooting (sheet 2)
Figure 3-2. Overall Troubleshooting (sheet 2 of 5)
Voltage display
within spec
?
Reads approx. right
but outside spec
?
A5J722-1 (Vmon)
approx. 4.1V
?
A
From Sheet 1
Voltage readback circuit on
A5 DSP board defective.
Calibrate the supply. See
Appendix A in the Operating
manual.
No
No
Check cables from A1
main board to A5 DSP
board.
No
YesYes
CV
Annunciator
on ?
See CV/CC Status Annunciator
Troubleshooting" paragraph
Output current
within spec?
Current display
within spec?
Yes
No
Turn off the supply and connect a short
across the output terminals. Turn on
and program full scale voltage and
current using front panel keys. Check
output current with an external
ammeter.
Yes
C
No
To Sheet4
Reads approx.
right but outside
spec?
A5J722-3 (Imon)
approx. 4.4V
?
Check cables from A1
Main board to A5 DSP
No No No
Calibrate supply. See Appendix A in
the Operating manual.
Current readback circuit on
A5 DSP board defective
Yes Yes
CC Annunciator
on ?
Yes
Current readback circuit on
A5 DSP board defective
No
D
To Sheet3
Yes
Yes