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
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