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Section 3. Local Operation
User Diagnostics
46 Operating Manual for XPD Series Power Supply
Table 3.2 User Diagnostics
Symptom Check Further Checks and Corrections
No output and the
display is blank.
In input voltage within
specified range?
Connect to appropriate voltage
source. See
“AC Input Power
Connection” on page 28
.
Power switch ON? Turn on power.
Internal circuit? See your service technician.
No output but the
display turns on.
OVP LED turned on? See
“Using Over Voltage
Protection (OVP)” on page 38
.
Front panel S/D LED
turned on?
See
“Using the Shutdown
Function” on page 39
.
Current limit set to zero? See
“Standard Operation” on page
35.
Voltage control set to
zero?
REM LED turned on? If using remote analog control,
check your analog programming
source (See
“Remote Operation”
on page 49).
Internal circuit. See your service technician.
Output voltage not
adjustable.
Is unit in current limit
mode? (Red Current
Limit mode LED turned
on.)
Turn current knob clockwise to
increase current limit. Reduce load
if current is at maximum. See
“Standard Operation” on page 35.
Is unit in remote
programming mode?
(Green PGM LED is
turned on.)
If using remote analog control,
check your analog programming
source (See
“Remote Operation”
on page 49
). If not, refer to your
digital interface manual.
Is unit at maximum
voltage or current limit?
Reduce load for lower voltage or
current requirement.