The module usually features multiple input channels, opto-isolation, transistor or relay outputs, and status LEDs.
If your RM28525 fails with no output, measure resistance between SW and GND. A short here indicates a failed XL4016. rm28525 schematic diagram updated
: Frequently identified as a replacement part for the HP LaserJet M1005 and related models. transistor or relay outputs
The updated schematic identifies specific . Always check TP1 for the primary DC rail voltage before moving to the logic gates. If TP1 is low, the issue is likely in the rectification bridge. 2. Fuse Locations rm28525 schematic diagram updated