JLG TF6-42 Service Manual - Manuale (Pagina 207)

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Note that some faults leave the machine in a mode that is latched until a safe condition is met – e.g.
faults related to the boom position sensor cause the machine to behave as if the boom is extended.
This remains the case until the problem is corrected AND the transmission is placed in Neutral.
In AWP Mode, once SHUTDOWN is entered, the fault must be removed and the controller must be
reset to regain drive again.
3. Environmental Conditions
3.1 Nature of Environmental Conditions
The APC160 is intended to be used on mobile earth moving and material handling machinery and as
such is exposed to the severe environmental conditions these machines operate in.
The APC160 should be installed inside the driver's cabin protected from direct exposure to rain, dust,
and direct steam cleaning.
3.2 Behaviour of the System Under Certain Conditions
The built in outputs will automatically shut off in case their junction temperature exceeds 150°C.
This can be caused by external short circuits of outputs to ground, but also by over current conditions
when the unit is operated at high temperature. After cooling down, they automatically retry to drive their
load.
4. Diagnostics and Guidelines
4.1 Diagnostics and Maintenance
4.1.1 General
Principally there are no specific devices required for first level troubleshooting as the APC160
incorporates several self-test features assisting in this process.
Nevertheless, use of digital multi-meters and simple tools such as an indicator lamp will be required to
pinpoint exact causes of problems.
More in depth troubleshooting and system tuning involves use of a WIN95 Compatible PC with
appropriate software and FLASH parameter programming equipment.
The APC160 allows recall and modification of non-volatile parameters through RS232 and or CAN.
This way, customers can, given the necessary equipment, choose to adapt certain parameters to suit
their needs.
From a maintenance point of view, this is relevant in so far that the APC160 allows reading back the
(modified) parameters along with serial number, part number and modification date.
4.1.2 Self Test Functions
The APC160 has special circuitry to help verifying its operation.
Six self-test groups are built into the APC160 control programs: