Rm1-2316 Schematic «GENUINE ✰»

depending on the region) into lower DC voltages required for the DC Controller, Formatter, and various motors. HP Inc. (Original Equipment Manufacturer)

Smooths the signal into roughly 310V–340V DC (for 220V regions).

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RF_IN ---||----+----[L1]----+---- (Base/Gate of Q1) C1 | | +---[R1]---[R2]--- GND | +---[R_feedback]----+--- Vcc (via choke) | Vcc ---[FB1]---+----[C6]--- GND [L2]--- Output matching | | +---[C2]--- GND [C3]---+ | (Drain/Collector of Q1) ------------------+----||---- RF_OUT C5 Rm1-2316 Schematic

: 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

Continuity-test the main line fuse. If open, do not simply replace it.

Pin 7 outputs a precise 2.5V reference. Pin 6 (FB) receives a divided-down voltage from the isolated secondary side via an optocoupler. The internal error amplifier compares FB to the reference, adjusting PWM duty cycle to regulate output. depending on the region) into lower DC voltages

Often uses a robust high-voltage N-channel transistor like the 2SK2700 (K2700)

Understanding the RM1-2316 Schematic: HP LaserJet Power Supply Board Technical Breakdown The Go to product viewer dialog for this item.

(PSB) assembly used in several classic laser printers, most notably the HP LaserJet 1020 series and the Canon LBP2900 This public link is valid for 7 days

Receives incoming voltage through the power socket. Fuse and Filtering: Protects the board from power surges.

Provides optical isolation between the low-voltage output and high-voltage input. It tracks any voltage drops on the +24V line and informs the primary side oscillator to adapt its switching intervals. 4. Fuser Control Loop

High-voltage power supply rail is dead, preventing toner transfer.