Troubleshooting
Electrical
Input functions not operating
•Make sure connections into terminal block connector are secure.
•Make sure terminal block connector is secure in input/output port.
•Check connections for proper pin assignments.
•Be sure pins from external devices are assigned correctly.
•Check polarity of input. Inputs should be a contact closure. If not, it must be TTL level (logic 0 activates).
•Confirm that source supplying input to liquid handler is working.
Output functions not operating
•Make sure connections into terminal block connector are secure.
•Make sure terminal block connector is secure in the input/output port.
•Check connections for proper pin assignments.
•Output from liquid handler should be compatible with device to which it is interfaced. Outputs are contact closures.
5
Electrical
