62
Servicing and Maintenance
Product:
Espresso-Machine
Model: Semi-automatic,
Built-in
Service Instruction: 8/04 Circuit Board replacement
Problem:
Semi-automatic processes are not functioning, which are normally
engaged by pressing the corresponding pad on the front control
panel. Problems may include:
●
After pressing the grinder switch there is no reaction
●
In spite of pressing the >>brew coffee<< pad, no water is delivered
to the brewing station ( water pump not working = no pump noise)
●
When switch for >>steam<< and/or >>Water<< is pressed, there is
no reaction
●
No reaction from the main on-off switch (First, move machine out
of its housing and manually activate safety switch. This switch can be
found at he back of the machine, bottom left-hand side) Further,
check whether the machine’s safety fuse system is o.k. It is positioned
on the side, top left)
●
There is no reaction after having pressed >>one cup or two cups<<
pad and, likewise, >>short-medium-long Espresso<<
In correct working conditions, all function pads on being pushed should
immediately perform their relative tasks. The pre-set or individually set functions
should always be performed and delivered repeatedly in the same, standardised
way. If problems arise concerning these functions, which are not being delivered
in a standard way each time, or they are not working at all, then the following
checks should be carried out in the order given below:
●
check the flat cable connection between die switch circuit board and main
circuit board, next check
●
switch circuit board and, if the problem cannot be solved here, and the fault
still persists, then check
●
the main circuit board
and replace with a new one. This instruction will illustrate how to replace both
circuit boards and the procedures will be described separately.
Summary of Contents for SUPREME DED400XP1
Page 1: ...EXPRESSO DED400XP1 ...