Case 580SR Service Manual page 333

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2.15 FAULT FINDING
Before attempting any fault finding ensure you have
a suitable multimeter for checking component conti-
nuity. When fault finding remember that with an elec-
trical concern it is often a minor fault that may have
occurred and could be as simple as:
Z Poor continuity between connector pins.
Z Condensation in the connectors.
Z Disconnected cables.
Z Damaged or broken wires all of which could result
in a no drive situation but easily remedied when
found and corrected.
It should also be remembered that mechanical prob-
lems could result in fault codes appearing on the
LED display.
INDICATION OF FAULTS
In case a fault is present during normal operation
and is detected by the microprocessor, both the T-
LED and N-LED may be blinking in some way as
shown in the table below.
NOTE: on an open circuit or on a battery connection
(+), at the ON/OFF outputs, a detection is made only
when the corresponding output is in the OFF posi-
tion.
Also a short to ground is only detected while the out-
put is on.
LED - T
(Orange)
Off
Off
Off
On
On
On
Blinks
Blinks
Blinks
Blinks
Blinks fast
SECTION 21 - TRANSMISSION
LED - N
(Red)
Off
On
Blinks
Off
On
Blinks
On
Blinks slower
Blinks in phase
Blinks faster
Blinks out of phase
F
1 2
1
CONDITION
Normal operation
Normal operation - N selected
Blinks Normal operation - N selected/speed
too high
Diagnostic mode was activated at power up
Controller in RESET - malfunction
Self calibration in progress
Last fault currently shown on display
Input fault detected
Non critical output fault detected
Safety critical output fault detected
System shutdown - Neutral till power down
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N R T
3 4 5 6 7
2 3 4
SITUATION
-
-
-
-
Fault
-
Fault
Fault
Fault
Fault
Fault
267
F28292
N
8
F28358