Fisher FB1000-2 manual Troubleshooting and Error Indications, Replacing a fuse

Troubleshooting and Error Indications

The FB1000 detects and reports several events and conditions that are considered errors. The FB1000 will stop any run in process and display "ERROR XX" where XX is one of the below listed errors. When the FB1000 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 FB1000.

'XX'	Condition and possible remedy
00	Minimum load current detected. The output is not connected, or the
20	electrophoresis apparatus is not set up properly. Check your setup and
	connections.
01	Maximum load current exceeded. The output is short circuit, or the
21	electrophoresis apparatus is not set up properly. Check your setup and
	connections
02	Step load current change. The FB1000 has detected a large change in load
	current. Check your setup and connections
04	Loss of AC power, automatic recovery from power fail disabled, run not
	completed. The FB1000 detected loss of AC power and didn’t complete run.
05	Loss of AC power; run not timed. The FB1000 detected loss of AC power.
06-99	The FB1000 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 FB1000 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 FB1000 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: 5A, 250V, 5X20mm, type T fuse (T5A,250V) (Fisher catalog number FB-FUSE-3).

FB1000-2 MANUAL Page 10 7608177 Rev. A 8/9/02