Rm1-2316 Schematic !!top!! -

The HP RM1-2316 Go to product viewer dialog for this item. is a 220–240V Low-Voltage Power Supply (LVPS) board assembly, primarily used in the HP LaserJet 1018, 1020, 1020 Plus and compatible Canon models like the LBP2900.

: One of its most critical—and often most fragile—jobs is managing the heater for the fuser unit. This requires precise timing and high current to melt toner onto paper without overheating the machine. Legacy of Compatibility

Interpretation: This shows a classic common-emitter or common-source amplifier with shunt feedback for stability. Rm1-2316 Schematic

Unlike standard ICs, the RM1-2316 integrates:

One popular DIY solution (posted on EEVblog Forum) replaces the Rm1-2316 with a TI UC3845 plus an external 2.5V shunt regulator (TL431) and two MOSFETs. The schematic remains 90% identical except for the pin mapping. The HP RM1-2316 Go to product viewer dialog for this item

If the board is beyond repair, genuine and refurbished units are available from retailers like Toner2Print PrinterPartsPoint Common Failure Symptoms

Title: Comprehensive Technical Analysis: The RM1-2316 High Voltage Power Supply Unit Symptom: Output voltage oscillates