Jeio tech OV-11 Service Manual page 15

Classification
Power Power shut off during operation
1. Turn on the Main power Switch.
2. Set the SV value 100°C, Press the Start Button to operate.
3. Check DC Voltage from heater output terminal in PCB.
If Voltage is not measured, PCB Malfunction.
Check point
4. Check DC Voltage from Relay output terminal in PCB.
If Voltage is not measured, PCB Malfunction.
- Replace the PCB.
1. "2-1-1. Side Cover panel disassembly" Reference
Solution
2. "2-1-3. Main board PCB disassembly" Reference
3. The assembly is reverse order of disjointing.
Classification
Power Power shut off during operation
1. Check the fuse and then replace it.
2. Check an electric current both ground terminal and Wire using of the multi meter. (Check the polar terminal of Wiring)
Check point 3. Check Heater leakage.
1. If fuse is down, replace it. If heater is not leakage and
2. If current Ground terminal and wire doesn't apply current during measurement, It's Over current.
Solution - Over current is possible, but check shot circuit for all wires and electric parts.
Symptom
PCB Malfunction
Symptom
Service Factor
Over current
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Service Factor