System Problem - Samsung SRP-350PG - SRP 350 B/W Direct Thermal Printer Service Manual

9 Troubleshooting

9-2 System Problem

9-2
System
Problem
N
Reset Signal
Ok?
Y
Clock
N
Signal Ok?
Y
N
Program
Ok?
Y
N
SRAM
Ok?
Y
N
CPU
Ok?
Y
End
1. Check the IC M51953B(U10)
2. Check the Reset Pin on Flash Memory
3. Check the related Circuit & Pattern on PCB
1. Check the Clock Xin, Xout on FS741(U8)
2. Check the Frequency(16.00NHz)
3. Check the related Circuit & Pattern on PCB
1. Check the Addr/Data Line Pattern
2. Check the related Circuit & Pattern on PCB
3. Program downLoad again
1. Check the/CS Signal
2. Check the SRAM
3. Check the Addr/Data Pattern
1. Check the Main Clock(16.00MHz)
2. Check the Addr/Data Line Pattern
3. Check the Main PBA
Samsung Electro-Mechanics