I've stripped a Samsung laser printer down to get hold of the laser scanner/mirror for a bit of a play. In doing so I've also yanked the power-supply, which looks quite respectable (and useable) at +5V 1.6A, 24V 2.5A.
I don't doubt that the power supply works, but I believe that the 24V supply is switched during the start-up of the printer by the printer logic board.
The bottom of the PCB is helpfully marked for each supply output, and there's reference to the control logic on one connector from the logic board. This connector is 5 pins and is labelled:
CON4: 1-GND/2-24V OFF
3-RELAY ON/4-24V_S/5-FUSER ON
<< EDIT: Question removed - I found that grounding ping 2 of the control connector (shorting pins 1 & 2 together) enabled the 24V output from power-up >>
Regards,
Mike
I don't doubt that the power supply works, but I believe that the 24V supply is switched during the start-up of the printer by the printer logic board.
The bottom of the PCB is helpfully marked for each supply output, and there's reference to the control logic on one connector from the logic board. This connector is 5 pins and is labelled:
CON4: 1-GND/2-24V OFF
3-RELAY ON/4-24V_S/5-FUSER ON
<< EDIT: Question removed - I found that grounding ping 2 of the control connector (shorting pins 1 & 2 together) enabled the 24V output from power-up >>
Regards,
Mike
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