Sam4s ER-5200M Service Manual

8 Troubleshooting
8-4 SAM4S ER-5200 Series
8-4 Thermal Printer Problem
End
Thermal Printer
Problem
Print
Ok?
Y
N
1. Check the Control Signal on CPU
(Data/CLK/Latch/Strobe1,2,3,4)
2. Check the Harness.
3. Check the related Circuit and Pattern.
Power Vcc
V
PH Ok?
Y
1. Refer to the Power Problem.
2. Check the Harness.
N
Sensor
OK?
1. Check the nCS Signal of Latch 74HC541 (U8)
2. Check the related Circuit and Pattern of 74HC14 (U6).
3. Check the Harness.
4. Check the Print Conn PWB and Senso
r
PWB.
Y
Line Feed
OK?
N
1. Check the Phase Signal (CPU P7.4,P7.5)
2. Check the Driver LB1838 (U1,U3) Enable Signal.
3. Check the nCS Signal of Latch 74HC574 (U7)
4. Check the related Circuit and Pattern(IC LB1838).
5. Check the Harness.
6. Check the Feed Step Motor .
Auto Cutter
OK?
1. Check the Motor Phase Signal (CPU P1.5)
2. Check the related Circuit and Pattern.
3. Check the Harness.
Y
Y
N
N
Thermister
OK?
1. Check the ADC Port P10.0, P10.1 of CPU.
2. Check the related Circuit and Pattern.
3. Check the Harness.
4. Check the Thermister of TPH.

Sam4s ER-5200M Specifications

General

Brand	Sam4s
Model	ER-5200M
Category	Cash Register
Language	English