Check List For Gran Maestria Coffee Machine - Nespresso Maestria EF 285 Service Manual

6.2

Check list for Gran Maestria coffee machine

Check Error symptoms
1.1 Housing parts
incomplete?
1 Check the coffee 1.2 Housing parts bro-
ken or damaged?
machine for visi-
ble damage
1.3 Power cord dam-
aged?
2.1 Capsule container
cannot be locked in
place?
2.2 Drip tray cannot be
locked in place?
2.3 Cup support cannot
be tilted up, does
not engage or rat-
2 Check mechani-
tles?
cal components
2.4 Lever cannot be
operated correctly?
2.5 Lever makes unu-
sual noises
3 Fill water tank 3.1 Water tank leaks
4.1 Coffee machine
does not work (no
function at all)?
4.2 White LEDs do not
light capsule con-
tainer?
4 Switch on coffee
machine with ON/
OFF button
4.3 Coffee machine
does not get ready
but stays in error
mode
T R O U B L E S H O O T I N G
Measure /
repair work
YES - replace housing parts
NO - continue
YES - replace housing parts if
necessary
NO - continue
YES - replace power cord
NO - connect coffee machine
to the mains and continue
YES - check capsule container
and seat
NO - continue
YES - check drip tray with
metal cover
NO - continue
YES - check cup support and
mounting
NO - continue
YES
- check brewing unit
- check lever brake
(on brewing unit)
- check if rubber buffer is
missing
NO - continue
YES - check brewing unit
NO - continue
YES - replace water tank
NO - continue
YES
- check power cord and
terminal block
- check ON/OFF button
- check electronics
NO - continue
YES
- check electronics
- check light guides
NO - continue
4.3.1 One or both ther-
moblocks stay cold?
4.3.2 One or both ther-
moblocks get hot?
4.3.3 One or more of the three
LEDs at the front side do not
light steadily green?
Maestria / Gran Maestria service manual
Further measures /
repair work
Replace damaged parts
Replace damaged parts
Replace damaged parts
Replace damaged or missing
parts
Replace damaged parts
Replace damaged parts
Replace damaged parts
YES
- check wiring
- check thermo fuses
- check thermoblock(s)
- check temperature sensor(s)
- check electronics
NO - continue
YES
- check electronics
- check temperature sensor(s)
- check thermoblock(s)
NO - continue
YES
- check push/turn control
module(s)
- check electronics
NO - continue
After an initial inspec-
tion in accordance
with this check list,
errors are quickly found and
corrected with the appropri-
ate measure.
Therefore, adhere to the
sequence of the check list.
Repair every occurring error
and work the check list
through until it is completed.
37