Johnson J-5600, Service Manual

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Johnson Health Tech. Co., Ltd.
Anomaly
code
Code description Cause of anomaly
Countermeasures
A1
Up and down
seized
After the software gives
an instruction, the up and
down sensor of machine
core does not return
signal
1. Check if the connecting line contacts poorly
2. Check if the sensor works normally and code
plate is centered
Upper and
lower position
sensor
3-3. Error code (A1)
Lower limit
sensor
Upper limit
sensor