HP HP Smart Tank 7001 All-in-One Wireless Ink Tank Printer with Auto Duplex, ADF, and Refillable Ink System MECH-12 Error Fix: Scanner Glass or ADF Glass Dirty

Error code MECH-12 on the HP HP Smart Tank 7001 All-in-One Wireless Ink Tank Printer with Auto Duplex, ADF, and Refillable Ink System means: Scanner Glass or ADF Glass Dirty. Copies and scans show streaks, lines, or smudges — clean both the flatbed scanner glass and the ADF glass strip (a narrow strip inside the ADF mechanism); the ADF glass strip is the most common source of streaks in ADF copies; use glass cleaner on a soft cloth (spray the cloth, not the glass)

The most successful fix is "Replace the ADF Glass Strip Assembly" (medium difficulty, ~30 minutes). Estimated DIY cost: $0-$20. HomeMD has 2 community-ranked fixes for this error.

This error is rated medium severity. It should be addressed soon, but your appliance may still function in a limited capacity.

Yes — the top-ranked community fix ("Replace the ADF Glass Strip Assembly") is rated medium difficulty and takes about 30 minutes. Tools needed: T10 Torx screwdriver, Lint-free cloth.

DIY cost: $0-$20. Professional repair typically costs $120-$180. Many homeowners save money by trying the top-ranked community fix first.

The HP HP Smart Tank 7001 All-in-One Wireless Ink Tank Printer with Auto Duplex, ADF, and Refillable Ink System has 8 other known error codes, including: ADF-JAM (Document Feeder Paper Jam), E0 (Ink Access Door Open), E1 (No Paper in Input Tray), E2 (Paper Size Mismatch), E3 (Carriage Jam), and 3 more.