HP Color LaserJet CM1312 Service Manual - Page 221
Diagnostics - mfp toner
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On the first page, verify that all four print cartridge colors appear on the page. Also, verify that the 90degree angles in the corners are single toner colors and that the color plane registration is correct. Figure 7-11 Diagnostic page 1 HP Color LaserJet CM1321nfi MFP Diagnostics Page Calibration Information Power-On Calibration : 15 Minutes Calibration Timing: 48 Hours Parameters Color Density Contrast Highlights Midtones Shadows C MY K 0 00 0 0 00 0 0 00 0 0 00 0 On the second page, verify that there are four print-cartridge color sweep bars near the top of the page. From right to left, there should be even steps of toner gradation from light to 100%. The other squares on the page are for use only during manufacturing. ENWW Troubleshooting tools 207
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