BIXOLON service manual Troubleshooting, Power Problem, SRP-350/352plusA&C, Ok? On SMPS

SRP-350/352plusA&C

7. Troubleshooting

This chapter describes the methods for troubleshooting in this Receipt Printer.

7-1 Power Problem
Power
Problem
Power Out	N
Ok? On SMPS
Y	1.	Check the Input/Output Power Cable
	2.	Replace the Adapter(SMPS)
Power VDR	N
(+24V) Ok?
Y	1.	Check the Harness of Power S/W
	2.	Check the related Circuit & Pattern
Power VTPH	N
(+24V) Ok?
Y	1.	Check the TR (Q3,Q4)
	2.	Check the related Circuit & Pattern
Power	N
(+7.8V) Ok?
Y	1.	Check the Regulation U16 (LM2576S-ADJ)
	2.	Check the related Circuit & Pattern
Power VCC	N
(+5V) Ok?
	1.	Check the Regulation U2 (BA17805FP-E2)
	2.	Check the related Circuit & Pattern
Y
Power	N
(+3.3V) Ok?
Y	1.	Check the Regulation U3 (BA033FP-E2)
	2.	Check the related Circuit & Pattern
End
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