Illinois Tool Works IJ300, Operation Manual

Page: 84 / 125

Controller
Section 8: Troubleshooting
Page 74 of 115 5760-121 Operations Manual Rev B
IJ/3000 Controller:
System Symptom Possible Cause Operational Test Method
No Controller power,
no Green LED indi-
cator light on CPU,
no voltage on CPU
TP3 (5VDC normal) Power Supply Check Power Supply light indicator.
Check for 24V output for Impulse Jet, or
15V output for Integrated Valve.
Check connector between CPU & first
Interface Board (CPU JP1 and Interface
JR1).
Touch Screen not
responding, difficult
to select/pick on
boxes Touch Screen/Dis-
play Assembly Run system test and re-calibrate Touch
Screen.
Display will not turn
on Touch Screen/Dis-
play Assembly Check brightness level control.
Test for 12V on Inverter Board (GND to
Vin).
No response from
keypad entry Keypad Assembly Inspect flex cable for damage, particularly
at end going into CPU connector.
System not printing Interface Board Test Interface Board Test Points: (See
Appendix B for Test Points).
System not
responding CPU Board Check for Green LED to indicate power.
Check for Yellow LED. Flashing indicates
CPU is operating. If CPU is not respond-
ing, reset by completing:
Cntrl/Alt/On . If
system does not restart, complete hard
reset by removing power for 10 seconds. If
system still does not restart, complete
entire system reset by removing power,
removing battery, pushing battery clip
down to clear the system, then replacing
battery and powering the system on.
Test power at following points:
TP1 = Backlight Voltage Supply is 12V
when controller is on, ØV when controller
is off.
TP2 = GND
TP3 = 5VDC
TP4 = 3.3VDC
Touch Screen not
responding CPU to Display PCB
Cable Inspect CPU to Display Cable for nicks or
abrasions.