Integrated Display Pilot Lamps; Description Of Instrument Function Check - Belarus 920.4 Operating Manual

BELARUS-920.4/952.4
Failure message displaying on LCD display occurs during every switching on of the device up to
the moment of failure cause removal.
Notes:
1 – When powering on the ID, MD displays information in indication mode, selected before the
moment of ID power shut-down.
2 – If there is no information on parameter values, which are received from ECM only, corre-
sponding indication modes switch off automatically.

1.3.7. Integrated display pilot lamps

"ATTENTION: PILOT LAMP-INDICATORS SWITCH ON AND OFF SYNCHRONOUSLY
WITH CHANGES OF SYSTEM SENSOR STATES".
a) 5 (figure 1.5) – headlight high-beam pilot lamp-indicator.
Illuminates when headlight high beam is switched on.
b) 6, 7 (figure 1.5) – tractor and trailer turn pilot indicators. Operate in flashing mode when right or
left turn signal is switched on by multi-function underwheel switch 10 (figure 1.5), or when the
switch of hazard warning lights is on.
c) 8 (figure 1.5) – parking brake pilot lamp-indicator. "Parking brake" indicator operates in flash-
ing mode with 1 Hz frequency, when parking brake sensor goes off;
d) 9 (figure 1.5) – high on-board system voltage pilot lamp-indicator. Switches on when tractor on-
board system voltage exceeds 19V and goes out when supply voltage level goes down to 17V;
In this case ID switches off completely, and recovers its operational capability when the
voltage goes down to rated value of on-board system voltage.
e) 10 (figure 1.5) – coolant low level pilot lamp-indicator. Lights up when coolant level in recovery
bottle drops below 20% of general level.

1.3.8 Description of instrument function check

In the course of every connection to power supply, needle indicators and elements of PTO indica-
tor scale in the ID are checked for functioning. And during a second at most indicator needles de-
viate from initial marks and run over the first following digitized scale marks (over "5" for the
speed and over "10" for revolutions), and all segments and indications "540" and "1000" of PTO
scale are activated.
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