Fisher FB300-2 manual Troubleshooting and Error Indications, Replacing a fuse

Troubleshooting and Error Indications

The FB300 detects and reports several events and conditions that are considered errors. The FB300 will stop any run in process and display "EXX" where XX is one of the below listed errors. When the FB300 is displaying an error indication, press the gray ON/OFF key to clear the error and return to setup mode, or press the Run key to resume the run (after correcting the cause of the error). Note that loss of AC power during a run is considered an error condition. Always stop a run before turning off AC power to the FB300.

E'XX'	Condition and possible remedy
00	Minimum load current detected. The output is not connected, or the
	electrophoresis apparatus is not set up properly. Check your setup and
	connections.
01	Maximum load current exceeded. The output is short circuit, or the
	electrophoresis apparatus is not set up properly. Check your setup and
	connections
03	Loss of AC power; PF enabled and completed. The FB300 detected loss of
	AC power, however the run was completed as programmed.
04	Loss of AC power; PF disabled and not completed. The FB300 detected loss
	of AC power, the run was not completed since PF not enabled.
05	Loss of AC power; run not timed. The FB300 detected loss of AC power.
06-99	The FB300 detected an internal error condition. Contact technical support for
	instructions.

Before servicing the unit, be sure to always turn off AC power using the switch at the rear of the unit, and then disconnecting the AC line cord. The FB300 power supply requires no periodic servicing and should provide years of trouble free operation. Should you need to replace the fuses proceed as follows:

Replacing a fuse

CAUTION: The FB300 uses double pole neutral fusing.

Turn off AC power using the switch at the rear of the unit, and then disconnecting the AC line cord. Remove the fuse holder assembly using a small flat blade screwdriver. Always replace both fuses with appropriate replacement fuses: 1.5A, 250V, 5X20mm, type T fuse (T1.5A,250V) (Fisher catalog number FB-FUSE-1).

FB300-2 MANUAL Page 8 7608001 Rev A 8/02