I had Sharp AR-M351u photocopier with CIS unit for scanning the back of a document and CCD for scanning the front in a 2-2 scanning. Fortunately, the front scan is clear but the back scanned with the CIS is barely seen (not clear). I called on a technical who did some adjustment by pressing some codes and there was improvement. You can now see the scan but the problem now is that it is not SHARP. Please help me out
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