ZPrinter 650 Mainboard Replacement 1 No'lu Adım Geçmişi

	[title] Verify it's really mainboard fault I
	[* black] The electronics module is very complicated and many other things can fail. So you need to verify that your printer really has bad mainboard and not something else.
-	[* black] Normally, the mainboard produces a short beep about 10 seconds after ~~you~~ powerup ~~the printer~~. If it doesn't beep, then it's probably dead.
-	[* black] If ~~the printer~~ beeps more than once or beeps repeatedly, then the mainboard works, but something else failed (dead CMOS battery, bad memory ~~or HDD~~ etc.). In that case you can diagnose it like in Step 8.
+	[* black] Normally, the mainboard produces a short beep about 10 seconds after powerup. If it doesn't beep, then it's probably dead.
+	[* black] If it beeps more than once or beeps repeatedly, then the mainboard works, but something else failed (dead CMOS battery, dried out power converter capacitors, bad memory etc). In that case you can diagnose it like in Step 8.
	[* black] Another indication is the front display - if it lits up but all pixels stay black like in the photo, then it's likely the mainboard is dead. If it doesn't light up at all, then there is some other problem (dead power supply, for example).