Turn-On Checkout
38
4.
Save any operating state (for example, press
5.
Turn the power off and then back on.
A normal display free of error messages should appear. If not, the power supply requires service.
Runtime Error Messages
Under unusual operating conditions, the
V0LT
or
AMPS
display may show
+OL
or
-OL
. This indicates that the output
voltage or current is beyond the range of the meter readback circuit.
Table 3-4 shows other error messages that may appear at runtime.
Table 3-4. Runtime Errors
Display
Meaning
EE WRITE ERR
EEPROM status time-out
SBUB FULL
Message too long for buffer
SERIAL DOWN
Failed communication with front panel
STK OVERFLOW
Front panel stack overflow
UART FRAMING
UART byte framing error
UART OVERRUN
Overfilled UART receive buffer
UART PARITY
UART byte parity error