Belarus 1523, Operating Manual

Page: 170 / 312

BELARUS-1523/1523 В /1523.3 /1523В.3 Construction and Operation
159
Diagnostics of Faults
The BOSCH electrohydraulic control sys-
tem has the self-diagnostics feature and,
in case of detection of a fault, it gener-
ates coded data for the operator by
means of a diagnostics warning lamp on
the control panel. When no faults are de-
tected in the system after starting the
engine, the warning lamp is in constant
glow. After manipulations of the RHL
control handle upwards or downwards,
the warning lamp goes out. When the
control handle is set downwards, a green
warning lamp lights up to indicate the
drop of the RHL; when the handle is set
upwards, a red warning lamp to indicate
the lifting of the RHL.
If any faults are detected in the system
(after starting the engine), the diagnos-
tics warning lamp begins to give the
coded information on the fault and, if re-
quired, cause the system to block.
The fault code is generated in the form of
a two-digit number, the first digit of which
is equal to the number of flashes of the
warning lamp after a long pause. The
second digit is the number of flashes af-
ter a short pause. For example, a long
pause – lamp flashes three times, a short
pause – the lamp flashes six times. This
means that the system has a fault with a
“36” code. Should several faults be de-
tected, the system indicates one fault
code after another, one by one, sepa-
rated with a prolonged pause.
The system subdivides all the faults into
three groups: major, average, and minor
faults.
If
major faults are detected, the adjust-
ment operations are stopped and the
system is disabled. It can be controlled
neither from the main control panel nor
from the external button posts. The diag-
nostics warning lamp indicates the fault
code. The operation of the system is only
resumed when the fault is eliminated and
the engine is restarted.
In case of
average faults, the adjustment
procedure is stopped and the system is
blocked. It cannot be controlled from the
main control panel, but can be controlled
from the external button posts. The diag-
nostics warning lamp indicates the fault
code. The operation of the system is only
resumed when the fault is eliminated and
the engine is restarted.
In case of
minor faults, the diagnostics
warning lamp shows its code. The sys-
tem is still can controlled without block-
ing. When the fault is eliminated, the di-
agnostics warning lamp goes out.
If any fault is detected by the system,
proceed as follows:
1. Stop the engine.
2. Set the controls on the main control
panel of the RHL as follows:
• The hitch linkage control handle –
to the OFF position;
• The lift limit adjusting handle – to
the “0” position;
•
The soil working depth adjustment
handle – to the “0” position;
• The drop rate adjustment handle –
to the middle position;
• The “draft-position” mode adjust-
ment handle – to the middle posi-
tion.
3. Start up the engine and, if no faults
are detected, proceed with field jobs.
If the defects have not been elimi-
nated in such a way, carry out mal-
function diagnosis of the system and
eliminate the troubles.
For a list of possible troubles, their diag-
nostics methods and remedies, see the
section “Troubleshooting”.