Luxel T-6300 CTP error

[Hanafy]

I have CTP machine type LUXEL T-6300 CTP and i have error with it.
When Start it i see massage say: Drum`s vacuum is not sufficient .
Please i need help for that case.

Best Regards
Mohamed Hanafy
Mobile.: +01003484459
Mobile.: +01225620868
G-mail: Mo7.hanafy
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[guncis]

check vacuum tube. maybe screws are not tight enough. If doesnt help - check vacuum compressor (you can clean filters etc)