8
V. Troubleshooting flow chart
Notes for repairing chair or replacing parts:
①
Make sure the power is OFF before tearing down the wires, moving terminals or replacing
parts.
②
Semiconductors (such as IC and others) are very easy to be damaged by static, so when you
touch the PCB, please make sure your body is grounding (by wearing a girding static ring), or
your hands are touching with earthing grip (household electrical appliances putting to earth, such
as fridges, washers and so on) to release all static of the body.
1. No function when starting.
N Y
Y N
Y
否
是
N
N
Y
Y Y
N
N
N
Y
否
N
Is the LCD
illuminating?
Is the fuse melted?
Replace fuse.
Are the terminals of Up
and Down Stroke
Subassembly connected
securely?
Is the power cord
open-circuit?
The switches of Up and Down
Stroke Subassembly fail or not?
The EMC Board
fails or not?
Replace power
cord.
Replace it.
Connect
securely.
Replace
Is kneading on without pressing any
key when starting?
Width Inspection
Board fails or not?
Replace main PCB.
Replace Width
Inspection Board.
Содержание EC-570
Страница 40: ...39 X Electrical wiring diagram ...
Страница 41: ...40 XI Schematic diagram of the main PCB ...