
Chapter 2 Bar Code Failures
Table 4. Message List
| Message | Explanation | Solution | 
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| Unscannable code | Data validation error: missing | 1. Check that paper and | 
| check media | bar code. An expected bar | ribbon are clean, | 
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 | code is missing or was | unwrinkled, and | 
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 | printed so poorly that the | installed correctly. | 
| 
 | validator cannot detect it. | 2. Run a print job and | 
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 | |
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 | check that the validator | 
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 | beam is not obstructed; | 
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 | remove obstructions as | 
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 | necessary. | 
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 | 3. Run a print job and | 
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 | check that the READ | 
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 | LED flashes as bar | 
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 | codes exit the printer. If | 
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 | the READ LED does not | 
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 | flash, cycle power and | 
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 | run the job again. If the | 
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 | READ LED does not | 
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 | flash, inspect the cables | 
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 | and the cable | 
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 | connections. If the | 
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 | cables are undamaged | 
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 | and the connections are | 
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 | good, replace the | 
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 | validator. | 
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 | 4. Press PAUSE to clear | 
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 | the message. | 
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 | 5. In the VALIDATOR | 
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 | menu, press ↓ until | 
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 | “Clear Data” displays, | 
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 | then press ↵. | 
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| Validator not | The Validator Funct. = Enable | Check that the validator | 
| communicating | in the VALIDATOR menu, but | signal cable is securely | 
| 
 | when the printer was first | connected to the validator | 
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 | powered up it could not | unit. | 
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 | communicate with it. | 
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