Sam4s ER-650 Series Service Manual page 60

8 Trouble Shooting
8-4 VFD Display Problem
VFD Problem
Control Signal
Ok?
Y
Connector
Ok?
Y
Power VDI,
VCC Ok?
Y
VFD PBA
Assy Ok?
Y
End
8-4
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N
1. Check the CPU Control Pin (Data/CLK/Latch) .
2. Check the Harness.
N
1. Check the Harness.
2. Check the CPU Disconnection Function
Pin(P10.7)
N
1. Refer to the Power Problem.
2. Check the Harness.
N
1. Check and Replace the VFD PBA.
2. Check the UCL5812.
3. Check the VFD.
4. Check THE Harness & Soldering Point.
SAM4S ER-650 SERIES