Open Date EUROCODE 300 - Page 26

Eurocode Digi50 Controller V1.03 04/07/2005 Page - 26 -
Thermistor Faults
Digi50 controller utilising the Opendate Printer Range and a Standard Thermistor,
THERMISTOR FAULT
Thermistor Short Circuit. LED is on.
Display reads
2.7.1
(or similar)
Disconnect Thermistor inside printer. Measure the
resistance at 20
°
C. It should be 500k (see note below)
Disconnect wires from terminals “T” (green) and “T”
(yellow) inside the rear of the control box. Check for
short circuit.
If either FS2 or FS3 is blown, find short
to GND or mains. Repair & replace fuse.
Replace Thermistor
Reconnect wiring. Re-calibrate
controller as detailed on page 16
Thermistor Open Circuit. LED is on.
Display reads
. . 5.
(or similar)
Disconnect wires from terminals “T” (green) and “T”
(yellow) inside the rear of the control box. Check for
open circuit.
THERMISTOR FAULT
Re-calibrate controller as
detailed on page 16
Locate open circuit, repair or replace
faulty items as necessary.
Replace Thermistor
Re-calibrate controller as
detailed on page 16
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
NOTE! Results may vary, dependant on type of Thermistor and actual temperature.