Mutoh DE-22576A Circuit Board

Mutoh DE‑22576A is the main control board used in the RJ‑900X/RJ‑900C inkjet printer family. Failure modes commonly observed on this board include power‑rail failures (especially the +12 V rail to the printhead driver ICs), burnt or cracked surface‑mount ICs such as the controller MCU, and solder‑bridge shorts between adjacent trace pairs that can cause intermittent reset or no‑print conditions. First‑check diagnostics: verify all input voltages from the printer’s power supply (especially +12 V, +5 V, and GND continuity), inspect the board for obvious burn marks or cracked components, and review any error codes displayed on the printer’s LCD to pinpoint a specific fault line.[oss-gpt-20b]

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