5
IV. Malfunction catalog
Common Trouble and processing Methods are listed as follow:
Serial NO. Phenomenon Description Maintenance Methods
01
No Function
When Starting.
The LCD isn’t illuminating:
①Fuse melts (in the Power Source Box
or on the main PCB).
②Power supply circuit poorly
connected.
③EMC Board fails.
④main PCB fails.
① Replace Fuse.
② Replace Power Box.
③ Replace EMC Board.
④ Replace main PCB.
02
No function
when starting.
The LCD is illuminating：
①Mechanical switch fails or it’s wire is
opened.
②Up or Down Stroke Photo-electricity
fails.
③Main PCB fails.
④Kneading is on without pressing any
key when starting and no response by
pressing other keys.
①Replace mechanical switch or
it's wire.
②Replace Stroke Photo-
electricity.
③Replace the main PCB.
④Width Inspection Board of
PCB fails, replace it.
03
No Width
switchover.
①The terminals of Width Inspection on
main PCB and wires are poorly
connected.
②The terminals of Width Inspection on
massage mechanical and wires are
poorly connected.
③ Width Inspection fails.
④ Main PCB fails.
①&②Plug the terminal securely
or replace the wires.
③ Replace Width Inspection.
④ Replace the main PCB.
04
No Partial
Function.
①Height Inspection Terminal or wire
poorly contacts.
②Height Counting Subassembly fails.
①Plug the terminal securely or
replace the wires.
②Replace Height Counting Sub
-assembly.
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