Sam4s ER-5100 II SERIES, Service Manual

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6. Troubleshooting
SAM4S ER-5100II SERIES 6-3
6-3 VFD Display Problem
End
VFD Problem
Control Signal
Ok?
Y
N
1. Check the CLK Signal (CPU P1.5)
2. Check the DATA Signal (CPU P1.7)
3. Check the LATCH Signal (CPU P1.6)
4. Check the Harness.
Disconnect
Ok?
Power VDISP,
VCC Ok?
Y
1. Refer to the Power Problem.
2. Check the Harness.
1. Check the Harness.
2. Check the VFD Disconnection Signal Pattern.
N
VFD PBA
Assy Ok?
Y
1. Check and Replace the VFD PBA.
2. Check the HV5812P.
3. Check the VFD.
4. Check the Harness & Soldering Point.
N
Y
N