TEC MA-516-100 SERIES Owner's Manual page 157

3. Trouble concerning Keyboard
Key on the keyboard does not function.
Cause 1: Control Lock is in the OFF position.
Measure: Turn the Control Lock to the positions other than OFF using the Control Key.
Cause 2: Failure of the keyboard itself
Measure: Ask the store where purchased.
4. Trouble concerning Drawer
Drawer does not open.
Cause 1: Drawer catches foreign substance (coin, etc.).
Measure: Try to open the drawer by removing the foreign substance, using a ruler or something. If not effective,
ask the store where purchased.
Cause 2: Failure of the drawer itself
Measure: Ask the store where purchased.
5. Trouble concerning Display
Display displays nothing.
Cause 1: Register is not securely plugged in.
Measure: Securely plug in an outlet.
Cause 2: Control Lock is in the OFF position.
Measure: Turn the Control Lock to the positions other than OFF using the Control Key.
Some segment is not displayed, display shimmers, or illumination of the display is
uneven.
Cause 1: Failure of the display tube
Measure: Ask the store where purchased.
6. Trouble during Normal Operations
NOTE on changing the Control Lock position:
Changing the Control Lock position during sales entries or programming causes an error. To clear the error, return
the Control Lock to the original position. However, changing the Control Lock position to the OFF does not cause an
error. Error caused by changing the Control Lock position cannot be cleared by the [C] key.
Normal operations cannot be carried out.
Cause 1: Control Lock position does not correspond to the operation you attempted.
Measure: Check whether or not the Control Lock position corresponds to the operation.
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MA-516-100 SERIES