15
TROUBLE SHOOTING
TROUBLE SHOOTING
The EM 85XX balancing machine is equipped with self-test and self-diagnostics programs
which cover the majority of faults and how to solve them
(see the list of error messages and
"troubleshooting" in the user manual)
.
There are however some malfunctions which the machine is unable to identify; these are
listed below.
WARNING!
For all electrical faults, before replacing any circuit boards:
-
check that the power cable is correctly connected to the transformer primary, depending
on the mains voltage;
-
check that the secondary transformer voltages correspond to their specified nominal
values (use a tester set to AC voltmeter and refer to the attached transformer diagram);
-
check the condition of the cabling between the components probably involved in the
malfunction. In particular, check:
-
that all connectors are correctly inserted in their sockets;
-
that all contacts are correctly secured at the ends of the wires of the various cables;
-
that the mains power supply is stable and that the ground plant is operational;
-
that the transformer and power board fuses are not burnt, and that the leds on the power
board have lit up to indicate that the power phases are available.
We give a summary troubleshooting table below, with reference to the general wiring
diagram.
The machine does not switch on
Use a voltmeter to check that there is power to the transformer primary terminal block.
1) If there is no primary voltage
check:
-
the condition of the voltage connector and the fuses;
-
that the power supply lead is connected correctly to the plug;
-
the condition of the mains cable;
-
the operation of the master switch.
2) If there is primary voltage
check:
-
the transformer fuses;
-
the transformer secondary voltages;
-
the operation of the PEAL "power and control board", and check:
•
the board fuses and that the respective leds are on;
•
the power voltages available at the Jalsk connector (refer to the attached wiring diagram
for the board);
- that the motherboard power supply cable is wired correctly and its connectors properly
fitted;
- check for short circuits on the peripheral equipment. To do this, disconnect all cables from
the motherboard connectors, except for the power cable, and try switching the machine on in
this condition.
If the above checks do not identify any defective components, replace the motherboard.
When the START button is pressed the machine does not run a spin cycle
In this case the possible causes depend on the monitor display.
