Johnson MC-J6900 - CHAPTER 3: ENGINEERING MODE INSTRUCTION; 3.1 Key operation

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CHAPTER 3:ENGINEERING MODE INSTRUCTION
3.1 Key operation:
A. When the power is on and manual controller is not yet activated(before enter the main
interface), press point and heat on the manual controller at the same time for 5 seconds and the
controller will display “ - - ”
+ =