Bixolon SRP-350 User Manual

Page of 59
 
Rev. 2.01 
- 51 -
SRP-350/352plusA&C
7. Troubleshooting 
   
This chapter describes the methods for troubleshooting in this Receipt Printer. 
 
7-1 Power Problem 
 
Power Out 
Ok? On SMPS 
Power VDR
(+24V) Ok?
Power VTPH
(+24V) Ok?
Power VCC
(+5V) Ok?
End 
1. Check the Input/Output Power Cable 
2. Replace the Adapter(SMPS) 
1. Check the Harness of Power S/W 
2. Check the related Circuit & Pattern 
1. Check the TR (Q3,Q4) 
2. Check the related Circuit & Pattern
1. Check the Regulation U2 (BA17805FP-E2) 
2. Check the related Circuit & Pattern 
Power 
Problem 
Power 
(+7.8V) Ok?
1. Check the Regulation U16 (LM2576S-ADJ) 
2. Check the related Circuit & Pattern
Power 
(+3.3V) Ok? 
1. Check the Regulation U3 (BA033FP-E2) 
2. Check the related Circuit & Pattern