PG-print pattern 1 shows same symptoms for all 4 lasers. Although running generic toner (yikes) I have installed a black test drum and symptoms were identical. Density of test print 1 seems OK in solids but borders and interior of patterns are poorly defined, could be called 'grainy' as in other posts. Replaced ITB belt with 'used but good' belt with no luck. Cleaned charge and transfer roller bushings, pattern reader unit, black laser window slot. Hoping for suggestions before DC-controller clear. Image is poor immediately after transfer from drums to ITB.
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