This part is compatible with : Designjet T620 T770 T790 T1120 T1200 T2300 etc. TESTED AND FULLY WORKING PART TAKEN FROM A 24" T790 THAT HAD A BAD SERVICE STATION AND WASNT ECONOMICAL TO REPAIR. Encoder Sensor Assembly for HP DesignJet T/Z Series Plotters and Printers - HP Original Part NumberCK837-67020, CR647-67023, Q6688-60091.
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