
The screen is locked up.
| Possible Cause | Recommended Action | Page | 
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| Internal malfunction | Reset the unit. | 32 | 
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 | If resetting the unit does not correct the | 34 | 
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 | problem, perform a full reset (memory | 
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 | initialize).* | 
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| A message about a data error is on the screen. | 
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| Possible Cause | Recommended Action | Page | 
| Internal malfunction | Follow the instructions that appear on | – | 
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 | the screen. | 
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*Perform the procedure on page 39 when the full reset (memory initialize) does not correct the problem.
38
