Troubleshooting
LCD messages
Message | Meaning | What to Do |
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* TONER SENSOR ERROR | Flashes across the | Open the top cover and |
| second line of the | make sure the |
| display: the indicated | indicated toner is there |
| color toner (*) is | and properly seated in |
| missing from the | the printer: C = Cyan, Y |
| printer. | = Yellow, M = Magenta, |
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| K = Black. |
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ADD MORE MEMORY | The document size | Reduce the size of the |
420: MEMORY OVERFLOW | is too large for the | document. If this |
| printer’s memory. | happens frequently, |
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| install additional |
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| memory (see “RAM |
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CANCELING JOB | Job Accounting is | The client must go to |
(USER DENIED) | being used and the | the system |
| client sending the | administrator and get |
| print job is not | print privileges |
| authorized to print. | assigned to them. |
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CANCELLING JOB | Job Accounting is | Check with your |
(BUFFER FULL) | being used and the | system administrator. |
| printer’s buffer is full. |
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CANCELLING JOB | The setting for Jam | Clear the jam and |
(JAM) | Recovery in the | resend the missing |
| menu has been | pages of the print job. |
| changed to off and a |
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| paper jam has |
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| occurred. Any |
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| unprinted data is |
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| being deleted. |
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Troubleshooting • 121