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The Ricoh MPC3004, MPC3504, MPC4504, MPC5504 copier or printer does not see the toners, that is, it does not read the chips. This is a known issue - clean the toner supply unit and chip reader. Here is the procedure on how to get the chip connection section. Any cyan, magenta, yellow, black toner color may be affected.
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You often ask about my tools 🪛 🔧⚙️ store tools in my videos www.toya24.pl
🏆 My favorite tools: YT-6903, YT-2601, YT-2614, YT-6916, YT-1956, YT-1944
🥇 Straight elongated pliers, CRV, 200 mm, three-color handles YT-1944
⚙️ 12-PIECE PRECISION SCREWDRIVER SET AND HOOK NO: 64555
🔦 YT-08568 rechargeable flashlight
🪛 Cordless screwdriver YT-82901