8 Troubleshooting
8-4
SAM4S NR-500 SERIES
End
Printer Problem
Y
N
Power VCC
VPRT Ok?
Y
1. Refer to the Power Problem.
2. Check the Harness.
N
Thermister
OK?
1. Check the PRINTER JOINT B’D and soldering status.
2. Check the printer FFC harness.
3. Check the thermistor resistance of Printer.
Y
P/END Sensor OK?
N
1. Check the Sen_p/end Signal (U30 P3,P7)
2. Check the Sensor light part circuit.
3. Check the printer FFC harness & Replace the printer.
4. Check the PRINTER JOINT B’D and soldering status.
Y
N
Printing
OK?
LF MOT
Feed OK?
N
1. Check the Phase Signal (CPU P5.1, P5.4,P7.4,P8.3)
2. Check the Motor Enable Signal(CPU P5.5,P8.0)
3. Check the motor driver BD6380EFV(U12,U16)
4. Check the printer FFC harness & Replace the printer.
5. Check the PRINTER JOINT B’D and soldering status.
1. Check the control signal on CPU.
(Clk / Data / Latch / Strobe#1/#2,#3,#4)
2. Check the VPH voltage. Source voltage is VPRT
3. Check the VPH ON/OFF circuit and pattern.
4. Check the FDS4141(U8), MMBT2222(Q24) on Main PBA
5. Check the JOINT B’D and FFC harness.
6. Check and Replace the printer.
8-4 Thermal Printer Problem
Disconnect
Ok?
Y
1. Check the FFC Harness.
2. Check the PRINTER Disconnection Signal Pattern.
3. Check the PRINTER JOINT B’D and soldering status.
N
All manuals and user guides at all-guides.com
Summary of Contents for NR-500 Series
Page 74: ...8 Troubleshooting 8 8 SAM4S NR 500 SERIES MEMO All manuals and user guides at all guides com...
Page 80: ...10 Wiring Diagram 10 4 SAM4S NR 500 SERIES MEMO All manuals and user guides at all guides com...
Page 101: ...All manuals and user guides at all guides com a l l g u i d e s c o m...
