What we have learned fixing printers in Delhi, written down. Diagnosis, running costs and the things worth knowing before you spend money on a machine.
How Canon's error and support codes are structured, what the common ones mean on imageCLASS, LBP and PIXMA machines, and which need a technician.
Read the guideA used laser printer can be a bargain or a parts bin. The checks that separate the two — page count, test pages, consumables and what wear looks like.
Read the guideWhy worn pickup rollers cause misfeeds, double feeds and no-pickup errors, how to check yours, and when the rubber simply needs replacing.
Read the guideWhat actually happens inside a proper remanufacturing process, how it differs from a quick refill, and how to judge what you are buying.
Read the guideWhich technology actually suits an office, why intermittent printing punishes inkjets, and the running-cost comparison that decides it.
Read the guideThe toner refilling process step by step — cleaning, parts checks, matched powder, chip reset and test prints — and what separates good from bad.
Read the guideWhat grinding or clicking from a printer means, how to tell which gear train is complaining, and when to stop printing before a gear strips.
Read the guideWhat the print spooler does, why one stuck job takes the whole queue down, and how to restart the service and clear the folder properly.
Read the guideHow to clear a jam properly — which direction to pull, what never to touch, and why repeat jams in the same place are telling you something.
Read the guideWhy a laser printer suddenly prints entirely black pages, the charging fault behind it, and how one cartridge swap isolates the cause.
Read the guideKyocera C codes by family — C6000 and the fuser group, C6400 power errors, C3100, F000 — what each means and which ones you can clear.
Read the guideWhat scan DPI actually controls, which setting fits documents, OCR, photos and archives, and why higher is often worse, not better.
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