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Home | Contact Us | Submit Troubleshooting Info | Search | Help
Output | Software Solutions | Proofing | Color, Screening and Calibration | Scanning | Digital Photography | Consumables | POS
Product |
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Component |
Thermal 2 Head |
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Error |
The TH2>> bbs shutter open command opens the sensor shutter, but the TH2>> bbs shutter close command does not close the shutter. |
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Symptoms |
Job failed to expose. |
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Cause |
The host can open the shutter, unless there is a safety
fault, but it does not keep the shutter closed. The host controls the shutter
during imaging. When the shutter is closed during imaging, a retrace is
indicated.
The timing requirements are such that a re-trace must be driven from the
hardware line. In addition, the host knows when it has finished imaging.
The head, which does not know when the host has finished imaging, receives
this information via the various shutdown messages sent on the slow serial
link. The host must close the shutter to avoid damage that may occur from light leakage. There is no sensor that indicates the actual state of the shutter. The shutter positioning system is an open loop, bi-stable two-position motor. If the actual state of the shutter is questionable and contradicts the firmware assessment, use the write laser beam and the shutter light sensor output to clarify. |
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Solution |
The steps listed below represent four possible
solutions, and should be performed in the order in which they appear. For
example, if step 1 does not solve the problem, perform step 2, and so on,
until the problem is solved.
Do one of the following:
Note: In one case, when replacing the TH2 power cable, the TMCE 12 V on the cable was missing, causing the above error. |
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Technical contact(s) |
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Submitted by |
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Date submitted |
23 Dec 2002 |
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