Case 580SR Service Manual page 947

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4.6 WORK HOURS
In order to allow service or the customer to view ve-
hicle hours of operation, it will not be necessary to
have the key. By pressing the enter/display/up/
down switch, with the key-off, the cluster must wake
up and display hours for 10 seconds.
The hourmeter increments when the engine is run-
ning (rpm> 600). The hours are visualized starting
from 0.0 until 210,554,060.7 using a step of 6 min-
utes. In case of battery disconnection, the cluster
can lose 0.1 hour or 6 minutes max.
WORK HOURS SETTING
In order to allow service to install a new Vehicle
Control Module (VCM) on an old vehicle, it is possi-
ble to increase (no decrease will be allowed) the
hour to the same setting as the original.
To modify the hourmeter value, execute the follow-
ing procedure:
Z select the hourmeter function on the display;
Z press and hold depressed for 15 seconds "arrow
UP" and "display" until the value shown on display
starts to blink (1 Hz, duty 50%);
With key to ON press for 15 seconds
Value may only increase for the hourmeter. While setting the value it can be decreased due to oper-
ator overshoot, but the value can not be stored if it is below the current stored value. Pressing DIS-
PLAY will exit without saving. ENTER must be pressed to store the modified value in protected
memory.
SECTION 55 - ELECTRICAL SYSTEM
Work hours
Any of the above at with ignition low
Hourmeter setting
Z once in the adjustment mode the meaning of the
arrow UP switch is "increase hourmeter value",
and the meaning of arrow DOWN switch is "de-
crease hourmeter value". Single switch pressure
will increase or decrease the value of one unit
(6 min). Continuous switch pressure will increase
or decrease the value continuously (1 every 300
milliseconds): when the value reaches a multiple of
10, the increment/decrement rate is 10 units every
300 ms; when the value reaches a multiple of 100,
the rate is 100 units every 300 ms; when the value
reaches a multiple of 1000, the rate is 1000 units
every 300 ms.
During continuous setting the value stops flashing.
Once the operator has reached the desired value
press and hold down the arrow UP and display
switches for 15 seconds to end setting procedure. It
is not possible to set a value lower than the current
one, and the procedure can be repeated three times
in the cluster life.
Blinking to indicate ability to
edit values
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Power up LCD and show work hours
for 10 seconds
To save the new value
0.1, 1, 10, 100 or 1000 hours
step depending on continu-
ous time pressed
To exit without saving
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