The RM1-2316 is the official part number for the 220V–240V Power Supply Board (also known as the Low Voltage Power Supply or LVPS) used in several classic laser printers. It is most commonly found in the following models: HP LaserJet 1018 Go to product viewer dialog for this item. HP LaserJet 1020 Go to product viewer dialog for this item. and Go to product viewer dialog for this item. Canon LBP2900 Go to product viewer dialog for this item. , , and The Technician’s Story: Reviving a "Dead" 1020 Imagine a small office where an old HP LaserJet 1020 Go to product viewer dialog for this item.
Safety Warning: Circuits containing an Rm1-2316 often have lethal voltages (300V+ DC on primary side). Do not probe while powered unless using an isolation transformer and proper safety gear. Rm1-2316 Schematic
If the power board is failing, you may encounter the following issues: The RM1-2316 is the official part number for
suddenly refuses to power on. The lights are out, and there’s no sound of the motor. A technician arrives, and instead of recommending a new printer, they reach for the RM1-2316 schematic or a service manual. 1. Identifying the Fault Discharge all power supply capacitors
Based on industry patterns, the Rm1-2316 is most likely one of the following:
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.
Transceiver Unit: This module is pivotal for the transmission and reception of signals. It integrates both transmitter and receiver functions, facilitating a bidirectional communication flow.