Hardy HI 2151/30WC Single-Scale Controller - Manual (Page 142)

HI 2151/30WC MANUAL
8-22
N - Blank Screen
N
Monitor system for proper
operation.
Check out complete
Weight Controller's front display is blank
1) Check for proper power at J6
and the source connection.
2) Check the circuit breaker at the
source
Measure the excitation
voltage at J1.
5 vdc ?
Replace the 1/2
amp slo-blow fuse
and apply power.
Does the fuse blows
again?
Check the power fuse located inside
the case.
OK?
Measure A.C. Power
at J6
OK?
Measure the
Excitation voltage
at J1.
5 vdc?
Disconnect all the
connectors from the
back panel except
power.
1) Reconnect the jacks one
at a time checking the 5 vdc
excitation.
2) If reconnecting any jack
effects the 5 vdc, check for
wiring errors.
Contact
Hardy Instruments
Customer Service
800-821-5831
No
Yes
No
No
YES
No
Yes
Yes
Contact
Hardy Instruments
Customer Service
800-821-5831
NO
Display OK
Yes