Samsung SCX-5312F

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Troubleshooting

Samsung Electronics 4-23

All black in

printing area?

Is charge

voltage supplied

from HVPS?

Is the

Hsync/ signal received

in LSU?

Charge part's contact

is bad -> Repair or

replace toner cartridge

Does the

video data line to LSU

transit to High/Low when

printing?

Replace LSU

Check the path among video

controller, engine board,

HVPS, LSU for the shortage

or open -> Repair or replace

the boards

Repair or replace HVPS

Replace LSU

YES

All Black

Digital Printer

Samsung SCX-5312F - Page 54