Philips EP 4300 Series Service Manual page 33

Test mode
Sequence of
actions by user
L4 White ON in UI panel +
BoxK4 White in Display +
Press button K4
Hear the feedback sound.
The text on the Tile of the UI panel
is equal to the text on the Display
• L4 OFF in UI panel +
• BoxK4 OFF in Display +
Press button K4
(optional)
• Hear the feedback sound.
Reaction of the appliance
PASS
L4 OFF & BoxK4 White
L4(!W) ON & BoxK4
White
Other Lx toggle
Other BoxKx White
It's not possible to hear
the sound
The sound is persistent
The text on the Tile of
the UI panel is different
to the text on the
Display
FAIL Cause of failure
L4 damaged
L4 wrong color
Short circuit in Led
Short circuit in Buttons
The drive of the Buzzer
or the Buzzer in the
Main is damaged
The drive of the Buzzer
or the Buzzer in the
Main is damaged
Wrong software
uploaded in the UI
Solution
Change UI board
Change UI board
Change UI board
Change UI board
Change Main
Board
Change Main
Board
Change Main
Board
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