Troubleshooting
King Edge
6-8
6.2 LED Diagnostics
Most of the control circuits on the unit operate
in a similar way. If there is a malfunction, use
this procedure to trace each of the components
to find the problem.
Turn power OFF at the main disconnect
switch.
Open the right endframe door.
WARNING
The safety interlock switches
are only to be defeated
temporarily while performing
this procedure. Never
operate the unit unless all
safety systems are working
correctly. Serious Injury
Could Result.
The unit will not operate while a safety
interlock is open. As a temporary measure
during this work, defeat the panel interlock
switch by inserting one of the switch keys
that shipped with the unit.
To diagnose the problem, start the unit,
feed a piece and observe the problem
area.
Use the information in the:
OPERATING PRINCIPLES
chap-
ter,
Electric System
section,
Control
System
subsection,
CHI PANEL OPERATION
bulletin,
Test
section, and
SCHEMATIC
set,
to determine which LEDs to monitor
during a given operation.
1.
2.
3.
4.
•
•
•
For the component/function that doesn’t
work, check the appropriate LEDs (Figure
6-1) against the chart below:
SET 1
—Input LEDs.
SET 2
—Microprocessor control board
input LEDs.
SET 3
—Microprocessor control board
output LEDs.
SET 4
—Output board LEDs.
LEDs
CHECK
Set 1 - OFF
- Component. Make sure it is
properly aligned and functional
Set 1 - ON
Set 2 - OFF
- Input board connection to
microprocessor control board
- Input board
Sets 1 & 2 - ON
Set 3 - OFF*
- Microprocessor control board
Sets 1,2 & 3-ON
Set 4 - OFF
- Microprocessor control board
connection to output board
- Output board
All LED’s are
ON. Device not
functioning.
- Open circuit between output board
and device.
- Device faulty
*This means that the control board is receiving input
but in not generating proper output.
Once the problem is diagnosed, remove
the key used to defeat the interlock and
close the right endframe door.
WARNING
Never operate the unit unless
all safety covers are in place
and all safety equipment is
working correctly.
Turn power OFF at the main disconnect
switch.
Repair/replace the component and then
retest.
5.
•
•
•
•
6.
7.
8.
Содержание King Edge
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