Samsung 275C - SRP Two-color Dot-matrix Printer Manual de servicio Pagina 121

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SRP-275
E. Self test is not normal
E
Does not printer
operate at all?
Is output voltage of
regulator on PCB-main
within SPEC?(*1)
Replace PCB-main assy
Replace printer
mechanism ass’y
END
END
YES
NO
YES
OK?
NO
YES
Printing is carried out, but print
quality is deficient or paper feeding is
not normal
Replace printer
mechanism ass’y
OK?
Replace PCB-main ass’y
END
END
NO
YES
NO
Check point Rating
+terminal of C51 +24V
+terminal of C55 +5V
(*1)
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