Printer Dell 1710n LEDs blinking

Thanks ,..this laser printer DELL 1710n when I turn on , just all leds from panel stay blinking ,...any Idea ? ,..could you help me ? what can I do ?,....thanks
 
Remove the toner cartridge and check to see if any paper is jammed in the printer. Re-install the toner cartridge and see if the printer starts normally. If the lights still flash, the printer could have a power supply problem, and it needs servicing
 
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