Rm1-2316 Schematic Review
The is the official manufacturer part number for the laser scanner assembly used in several highly popular HP LaserJet and Canon laser printer models. Finding a component-level schematic diagram for this specific board can be exceptionally difficult, as printer manufacturers rarely release internal circuit blueprints to the public.
: Dust or toner spilled inside the scanner box block the BD sensor, mimicking a component-level electronic failure. 🔧 Component-Level Repair Tips
Disclaimer: Work on the primary side of the RM1-2316 board involves lethal voltages up to 400V DC. Always unplug line cords and verify total capacitor discharge before deploying testing leads. If you are working on a specific repair, tell me:
⚡ When testing an open RM1-2316 circuit board under live power conditions, connect the unit through a dedicated 1:1 bench isolation transformer. This prevents accidental ground-loop faults that can destroy testing equipment or cause severe electrical shock.
The power supply board regulates line power sent directly to the fuser heating element via a solid-state triac mechanism. If the printer drops communication or returns fuser errors, map the circuit tracing backwards from the fuser connector plug down to the triac gating resistors on the PCB layout. Faded Print Quality (LVPS Bias Failure) Rm1-2316 Schematic
If you are and need to create or verify the Rm1-2316 schematic:
The designation does not match a major commercial off-the-shelf (COTS) component from vendors like Texas Instruments, Analog Devices, or ON Semiconductor. It most likely falls into one of three categories:
The charts the electrical pathways of the internal low-voltage power supply (LVPS) and engine control board used across legacy monochrome laser printers. A staple component in devices like the HP LaserJet 1020 Go to product viewer dialog for this item. HP LaserJet 1018 Go to product viewer dialog for this item. , and Canon LBP 2900 Go to product viewer dialog for this item.
Inspect the voltage regulator components on the RM1-2316. Symptom: Fuser Error / Light Printing The is the official manufacturer part number for
Powers low-voltage integrated IC blocks, processors, and status LEDs. 2SK2700 N-Channel Power MOSFET High-frequency DC bus switching component. Secondary Rectifier YG862C15 Fast Recovery Diode Outputs steady current lines to secondary filtering stages. Sensing Elements 0.22 Ohm Flameproof Current Sense Resistor
: Packaged inside the laser diode housing to provide feedback on light intensity, allowing the driver to auto-adjust power.
This circuit is notable because it lacks a standalone PWM controller chip, making standard troubleshooting counterintuitive for some technicians.
Test for short-circuit conditions between the Drain, Source, and Gate pins. A shorted MOSFET pulls excess current through the line, causing the 0.22-ohm flameproof sense resistor to blow instantly. Symptom 2: Blown 0.22 Ohm Low-Resistance Sense Resistor 🔧 Component-Level Repair Tips Disclaimer: Work on the
The RM1-2316 board is interchangeable across several popular monochrome laser models: HP LaserJet Series: 1018, 1020, 1020 Plus, and 1022. Canon LBP Series: LBP2900, LBP2900B, and LBP3000. Zipstore.ru 4. Common Repair Scenarios Often caused by a blown R523 safety resistor or a shorted Q501 MOSFET , especially if liquid has been spilled into the unit. Voltage Mismatch:
The (and its variant RM1-2316-000CN ) is a critical yet often misunderstood component in older HP and Canon laser printers. If you’re a technician, hobbyist, or printer owner, understanding this power supply board can be the key to diagnosing faults, sourcing replacements, or even repairing an otherwise functional printer.
Unplug the printer and check for continuity on the main fuse. Inspect for burnt components on the board. Symptom: Motor Spins but Lights Do Not Come On Diagnosis: The rail is missing, while the rail is active.
Converts incoming AC to a high-voltage DC bus (approx. 310V DC for 220V models). 2. The Flyback Inverter Stage (Discrete PWM)
When diagnosing a dead or malfunctioning printer utilizing the RM1-2316 power board, technicians look for several well-documented component failures:
