Do not use any schematic labeled "Preliminary" or dated before January 2025. We have identified at least three counterfeit diagrams circulating on third-party forums that contain deliberate errors (likely to mislead reverse engineering efforts).
: Frequently identified as a replacement part for the HP LaserJet M1005 and related models. rm28525 schematic diagram updated
The updated version is often labeled as the "New Model" which removes the older STR component in favor of more efficient Mosfets for power switching. Do not use any schematic labeled "Preliminary" or
: Standard schematics show a low-voltage DC control range (5 to 24 VDC) for triggering the output. rm28525 schematic diagram updated