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General safety warnings for servicing and operation.
Essential safety and handling guidelines before disassembling.
How to use the DCU for diagnostics and error codes.
Troubleshooting for lines, spots, density, and background problems.
Solutions for paper jams, multi-feeding, and fuser paper issues.
Diagnosing LED blinking, motor issues, and cover sensor errors.
Detailed schematics for the Phaser 3130 main board components.
Detailed schematics for the Phaser 3120 main board components.
Schematics for HVPS, SMPS, and other PBA circuits.
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General