Belarus 1221.2, Operator'S Manual

Page: 130 / 295

BELARUS-1221.2/1221 В .2/1221.3 Description and operation
129
Fault Diagnostics
The BOSCH electronic hydraulic control
system is provided with the self-testing
capability and issues the code information
to the operator by means of the diagnos-
tics indicator (8) (Fig. E-35b) on the RHL
control panel. In case of absence of
faults, the indicator is illuminated continu-
ously after starting the engine. After up-
ward or downward manipulations of the
RHL control handle (7) (Fig. E-35b
)
, the
indicator is switched off. On shifting the
control handle downwards, the green in-
dicator (6) (Fig. E-35b) of lowering the
RHL lights up; on shifting the same up-
wards, the red indicator (5) (Fig. E-35b) of
lifting the hitch linkage lights up.
Should there be some faults in the system
(after starting the engine) the diagnostics
indicator starts to issue the code information
about the fault and, if necessary, the opera-
tion of the system is locked.
The fault code is issued as a two-digit
number, the first digit of which is equal to
the number of indicator blinks after long
pause and the second one – to the num-
ber of indicator blinks after short pause.
For example, long pause – three blinks of
the indicator, short pause – six blinks of
the indicator.
It means that in the system there is a fault
under the code “36”. Should there be
several faults, the system indicates the
fault codes one after another with sepa-
rating them with a long pause.
All the faults are divided into the three
groups: complex, medium and light.
On detecting
complex faults, the control
is ceased and the system is switched off.
The system cannot be controlled from the
control panel and remote control buttons.
The diagnostics indicator issues the fault
code. After elimination of the fault and
starting the engine, the operation of the
system is resumed.
In case of
medium
faults, the control is
ceased and the system is locked. The sys-
tem cannot be controlled from the main con-
trol panel, but can be controlled from the
remote control buttons. The diagnostics in-
dicator issues the fault code. After elimi-
nation of the fault and starting the engine,
the operation of the system is resumed.
In case of
light
defects the diagnostics
indicator issues the defect code. The sys-
tem is not locked and can be controlled.
After elimination of the defect, the diag-
nostics indicator goes out.