Philips EP 4300 Series Service Manual page 49

Test mode
Sequence of
actions by user
Brew Unit (Test valid only if the Brew Unit is inserted)
• L1 White ON in UI panel +
• BoxK1 White in Display +
BoxT5 Green in Display +
BoxT6 Green in Display
Press and release
K1 to move BU
to work.
N.B:
• BU Move to Work
* If the BU is
already moving When BU has reached work
to home position:
then stop the
• L1 OFF in UI panel +
movement and
change the
direction into
work.
* If the BU is
already moving
to work then stop
• BoxK1 OFF in Display +
the movement.
BoxT2 Green in Display +
BoxT5 Green in Display +
BoxT6 Green in Display
• BU Stop to Move
Reaction of the appliance
PASS
BU not move
BU move to
Home
BoxT1 Red in
Display
BoxT2 Red in
Display. L1 OFF &
Work not reached
and BU OFF.
FAIL Cause of failure
Wiring of the BU motor
not connected
Wiring of the BU motor
damaged (open)
Motor of BU damaged
The drive of the
motor in the Main is
damaged
BU blocked
Gears or motor not
well assembled
Wiring of BU motor are
inverted
The absorbed current
exceed the limit
(xxxmA).
The BU Microswitch is
not well placed
BU Microswitch
damaged (open
circuit)
Wiring of the BU
microswicth not
Connected
Wiring of the
BU microswicth
damaged (open)
uP U2 in Main
damaged (open
circuit in Pin26)
Solution
Check the wiring
Change Main
Board
Change the BU
motor
Change Main
Board
Check the BU
Check the
assembly of the
gear and motor
Check the Motor
BU wiring
Check the
assembly of the
gear and motor,
check the BU
Check assembly of
BU microswitch
Change BU
microswitch
Check the wiring
Change the
wiring
Change Main
boad
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