Alliance Laundry Systems NK101 - Manual (Page 21)

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Troubleshooting
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Card Insertions not recognized by
the card reader
All card insertions should be reflected on the FEC
display in some manner. For example, if a valid cash
card is inserted into the reader, the FEC display should
show the balance on the card.
A simple test is to insert any non-smart card (credit
card, etc.) into the reader. The display should display
an EC:20. This indicates that the reader recognizes a
card has been inserted, but it cannot read it. Also this
verifies that the reader is communicating successfully
with the Front-End Control (FEC).
If the card insertions are not reflected on the FEC
display, one of the following conditions has occurred:
• Card reader harness not hooked up or wired
incorrectly.
• Card reader is not recognizing card insertions.
• Card reader is not capable of communicating with the
FEC.
• If a network board is present, it has malfunctioned.
• FEC has malfunctioned, and is not supplying power
to the reader.
• FEC has malfunctioned, and is not capable of
communicating with the reader.
If the FEC senses that a card reader is present and the
reader fails to communicate with the FEC, it will
display an EC:19 error after 2-1/2 minutes. However, if
the FEC never recognized that the reader was present at
power-up, there will be no error displayed to indicate
that there is no communication with the reader.
EC:19
NOTE: An EC:19 error indicates that the FEC
recognizes that there is a Card Reader present, but
it has not received a communication from it in the
last 2-1/2 minutes.
Network Board Present - If a Network Board (NWB)
is present, it is possible that it has malfunctioned. A bad
NWB can prevent the reader from communicating with
the FEC, resulting in an EC:19. Before powering down
the unit, examine the LED on the NWB. If the LED is
NOT flashing one second on/one second off, it is not
functioning correctly. It will need to be either reset ( by
powering down then up again) or replaced.
If a Network Board is present, it is helpful to eliminate
it, if possible, from the circuit temporarily for
troubleshooting purposes. Unplug the harness from the
NWB to the Card Reader, and also unplug the harness
from the NWB to the FEC. Next, connect the harness
which is used to connect a Card Reader directly to the
FEC.
NOTE: This harness is not included in machines
containing a NWB. The individual performing the
service to the machine will have to have this
harness.
If the EC:19 disappears once the NWB has been
removed (allow approximately 120 seconds), the NWB
may need to be replaced, since the reader was able to
communicate with a direct link to the FEC. Ensure that
the reader is now operating properly by inserting
several cards in the reader, and looking for the
appropriate response on the FEC display.
Once the NWB is removed from the circuit, continue to
"NWB Not Present" below.
Network Board Not Present - Begin by checking the
voltage to the card reader. The following
measurements should be taken at the 14-pin header on
the card reader. There should be between 24 and 38
volts DC across pins 3 and 12. This voltage must be
present, or the reader will not operate. Also, there
should be 5 volts DC across pins 10 and 12. This
voltage must be present, or the FEC will not recognize
that the card reader is present.
If the voltages mentioned above are found to be present
at the reader’s 14-pin header and the reader is not
functioning correctly, the harness may be bad, the FEC
may be bad, or the card reader may be bad.
First, disconnect the reader from the 14-pin header, and
re-connect it. Wait about 20 seconds. If there was an
EC:19 on the display, check the FEC display to see if
the EC:19 has gone away. If it has, the communication
has been re-established. The card reader may have
experienced a lock-up condition, and should run fine
once it has been reset by powering down and up again.
Whether or not there was originally an EC:19 on the
display, try several cards in the reader to ensure correct
operation.