Local Operation
User Diagnostics
Revision A 65
Table 3.4 Quick Diagnostics
Symptom Check Further Checks and Corrections
No output and the
display is blank.
Is input voltage in the specified range? Connect to appropriate voltage source.
Power switch ON? Turn on power.
Internal circuit. See your service technician.
No output but the
display turns on.
SW1 switch settings correct? (For when
using analog programming.)
See
“Remote Analog Programming of
Output Voltage and Current Limit” on
page 67
.
OVP LED turned on? See
“Using Over Voltage Protection
(OVP)” on page 59
.
Front panel S/D LED turned on? See
“Using the Shutdown Function” on
page 61.
OTP LED turned on? See
“Over Temperature Protection
(OTP)” on page 63.
Current limit set to zero? See
“Standard Operation” on page 51.
Voltage control set to zero? See
“Standard Operation” on page 51.
REM LED turned on? If using remote analog control, check your
analog programming source. (See
“Remote Analog Programming of
Output Voltage and Current Limit” on
page 67.) If not, refer to your digital
interface manual.
Is front panel ACF LED turned on? Connect unit to AC supply in specified
range.
Internal circuit. See your service technician.
No output and
display blinks
dimly.
Internal circuit. See your service technician.
Output not
adjustable.
Is unit in current limit mode? (Red
Current Mode LED turned on).
Turn current knob clockwise to increase
current limit. Reduce load if current is at
maximum. See
“Operating Modes and
Automatic Crossover” on page 51
.
Is unit in remote mode? (Green REM
LED turned on).
If using remote analog control, check your
analog programming source. (See
“Remote Analog Programming of
Output Voltage and Current Limit” on
page 67
.) If not, refer to your digital
interface manual.
Is unit at maximum voltage or current
limit?
Reduce load for lower voltage or current
requirement.
TM-XROP-01XN.book Page 65 Monday, March 22, 2004 4:10 PM
To Next Page
Loading...
