CARD READ SENSOR CALIBRATION INSTRUCTIONS
FOR
MODEL ATT 310
The sensor in the Model ATT 310 will need to be re-calibrated when the following criteria are met.
If unit:
1)
Misreads cards
2)
Rejects cards
3)
The card read sensor board is changed
4)
The control board is damaged or is disconnected from the driver board
To re-calibrate the sensors if a unit is misreading or rejecting cards and the control board is not to
be removed from the unit, please follow the instructions below:
1)
With the unit plugged in, remove the top case of the clock
.
2)
Push the reset switch (SW6) on the control board. The print head will cycle and the unit emits a beep
and the display will read 12:00.
3)
Turn on all 8 DIP switches on DIPSW2.
4)
While holding down switch SW1, push the reset switch (SW6) once.
5)
As soon as the LCD display comes on, release SW1. At this point, the display will show 12:00, but
the print head will not cycle and there will be no beep.
6)
Use the ATT 310 time card number S103.
7)
Insert the
TOP EDGE
of the card into the ATT 310 so the large black strips are facing down and the
left edge of the card is flush with the left side of the clock base. The ATT 310 will beep twice if it
reads the stripe correctly. If it does not read it correctly, it will beep once. (This step has calibrated
the unit for the back strip.)
SW6
SW1
