Computec
CDD6
EN
CDD6: user manual – rev.07
Page 65/74
6.3
Correct working check sequence
The following table reports the sequence of checks and actions to be executed for a functional test on the
field. Based on the problem found on the field, start the sequence from the related step.
Problem
Check
STEP
Question
Answer
Action
The system
does not
work
Main power
supply voltage
check
1
Is the controller
powered? Is the front
panel display showing
“- -“, “oP” or “Cl”?
NO
Go to step 2
YES
Go to step 6
2
Is the power supply
cable connected to door
drive?
The power supply cable
is NOT connected
Connect power
supply cable and
return to step 1
The power supply cable
is connected
Go to step 3
3
Check that power supply
voltage is inside the
declared operating
range: [90;290] Vac
single phase
The supply voltage is
correct
Go to step 4
The supply voltage is
NOT correct
Correct power
supply voltage and
return to step 1
4
Check CDD6 F1 fuse
F1 is open
Replace fuse F1 and
return to step 1
F1 is OK
Go to step 5
5
Press ON button on the
door drive front panel
The display is not
showing anything
Go to step 6
The controller starts
Go to step 7
6
Check if the NORMAL
LED is ON
The NORMAL LED is ON
ON button does not
work
The NORMAL LED is OFF
The controller is not
working