Philips Senseo Twist HD7871/60 User manual

Published by Philips Consumer Lifestyle Printed in the Netherlands © Copyright reserved Subject to modification
ServiceManual
Philips Consumer Lifestyle
Senseo Twist
HD7871/60
HD7871/61
15/09
Product information
•This product meets the requirements regarding
interference suppression on radio and TV.
•After the product has been repaired, it should function
properly and has to meet the safety standards as
officially laid down at this moment.
Technical information
•Voltage :    V
•Frequency :  Hz
•Power consumption :  W
•Standby power : < . W
•Color setting : Full Black
•Weight : . kg
•Dimensions (W x D x H)
 Packaging :  x  x  mm
 Product :  x  x  mm
•Length of cord :  cm
•Contents water reservoir :  cc (ml)
Accessories
•CRP/ cup pod holder, Black
•HD/ cup pod holder, Black
•CRP/ Drip tray cover, Deep black
•CRP/ Collector, Black
•CRP/ Spout, Deep black
•CRP/ XL water container (,L), Transparant
•CP/ XL water container lid, Deep black
Optional (accessories)
•No specific issues

HD7871/60 / HD7871/61
2-11
Water
Supply
System
PCBA
NTC
UI PCBA
L
N
Pump
M
Water level
sensor
On/Off button
1-cup button
2-cup button
Toggle button
On/Off LED
1-cup LED
2-cup LED
Toggle LED
Regular LED
Strong LED
Memory LED
Descale LED
Buzzer
Communi
cation
Boiler
TCO
Fuse
Fuse
Schematics
Disassembly- and Reassembly advice
Before you start dismantling! For your safety be
sure the plug is disconnected from the mains!
The product is designed for easy access to
the internal components. Make sure that all
accessories like tank, pod holder, drip tray, spout
and collector have been removed.
To remove the back cover (31):
Place the appliance facing its backside. Using a small
screwdriver remove screw cover (28) and unscrew both
screws A. You can now remove the back cover from the
appliance, please be aware that the Water level sensor
(32) is still attached to the back cover.
To remove the brewhead lid cover:
Place a screwdriver on the positions (see picture) and
work your way to the bottm. Please be aware that due
to the construction of the brewhead, the space inside is
limited. There is a chance Hose (a) will come o the pillar
when opening the brewhead (22).
!
Caution, the hinge spring on the back side of the appliance
may come out when the brewhead lid cover is being
removed. When reinstalling it, mind your fingers as this is a
strong spring.
To remove the boiler (24):
Caution the boiler may still be hot!
•Remove the back cover.
•Disconnect the Hose (a) to the brewhead.
•Unhook the way valve (27) from its seat on the
bottom of the brewhead.
•Unhook the boiler from the snap hook on the bottom of
the brewhead.
•Disconnect the following leads:
 (x) Boiler 
 (y) Boiler –
 (w) Earth
•Remove Hose (b) from the bottom side of the boiler.
The boiler will not drain as long as the way valve is
still connected to the top. You can now safely remove the
boiler from the appliance.
Note:
Please note, after replacing the boiler the appliance has
to be restored to factory default. The filling procedure
(cold flush), known from the predecessor Senseo’s is no
longer available after the flush before first use has been
executed. When the “restore to factory default” procedure
is not carried out, a new and empty boiler can be switched
on, without having the protection of the initial flush
procedure, causing the thermal fuses in the heating element
to fail. After a boiler replacement or drained system, carry
out the “Boiler reset” procedure! Then the initial flush
procedure can be carried out.

HD7871/60 / HD7871/61
3-11
Disassembly- and Reassembly advice
To remove the brewhead assembly:
•Remove the back cover.
•Remove the boiler, or simply lay it aside.
•Use both thumbs to push the brewhead upwards; you
may need to tilt the brewhead forward to remove it from
the appliance.
To remove the PCB assembly (34):
•Remove the back cover
•Remove the boiler
•Remove the brewhead assembly
•Remove the Main PCBA cover (33)
•Disconnect the following leads:
 NTC (at cable)
 Water level sensor (at cable)
 (z) UI PCBA (at cable)
 (s) Live
 (t) Pump
 (u) Neutral
 (v) Earth
•You can now unhook the snap hooks holding the PCBA
in place.
To access components located in the base of the
appliance (UI Panel, Pump, Water container interface)
Open the Base:
•Remove the back cover
•Remove the boiler
•Remove the brewhead assembly
•Remove the Main PCBA cover (33)
•Remove the PCB assembly
•Unscrew the two screws (B) holding the Front housing
(23) in place. Remove the front housing
•Take the base of the appliance, using a small screw
driver start at the point indicated in the picture. Gently
push it between the tray panel assembly (36) and base
plate (41), the hidden snap should click open.
•Undo the two click connections visible on the bottom
side of the appliance.
•Now use the screwdriver to trace around the edge of
the tray panel assembly and base plate until you reach
the position of the drip tray. Repeat the process for the
other side. All snap hooks will come undone.
Please note that the water container interface is still
connected to the tray panel assembly and to the pump on
the base plate
To access the capacitive UI PCBA:
•Remove the back cover
•Remove the boiler
•Remove the brewhead assembly
•Remove the Main PCBA cover (33)
•Remove the PCB assembly
•Unscrew the two screws (B) holding the Front housing
(23) in place. Remove the front housing
•Open the Base
•Turn the Tray panel assembly upside down and open the
clicks of the UI PCBA Cover
•Here you will find:
 UI PCBA (38)
 UI Panel frame
 Light distributor
Descaling
Descaling is an important element in Senseo maintenance.
It should be done at least once every  months, up to
 times a Year! This will prolong the life of your appliance
and will guarantee optimal brewing results for a long time.
Use the correct descaling agent. Only citric acidbased
descalers are suitable for descaling the SENSEO® machine.
This type of descaler descales the appliance without
damaging it. For the correct amount, see the instructions
in the packaging of the descaler.
We advise you to use the special SENSEO® Descaler
(HD or HD). Read the instructions on the
package of the descaling agent. Never use a descaling
agent based on mineral acids such as sulphuric acid,
hydrochloric acid, sulphamic acid and acetic acid (e.g.
vinegar). These descaling agents may damage your
SENSEO® coee machine. Follow the steps in the section
headed “Descale the appliance” see DFU (Direction for
Use manual).

HD7871/60 / HD7871/61
4-11
Service mode
Only in case of a reset appliance you can check it’s current settings.
When connecting the appliance to the mains, you should see the On/Off light blinking very rapidly
for 0.5 seconds. For convenience the country selection and ME/HE selection are also being displayed.
1-cup button1 & 2-cup button2-cup button
Press the indicated button after connecting the mains
Blinking
Off
Blinking
Off
Blinking
General version
Boiler_empty_flag set
France / Spain version
Country
Selection
ME / HE
Selection
Mid-end
High-end
Sensor
On/Off button
1-cup button
2-cup button
Toggle button
NTC boiler
Water level sensor
-
-
On/Off LED
1-cup LED
2-cup LED
Toggle LED
Descale LED
Regular LED
Strong LED
Memory my cup LED
Button pressed
Button pressed
Button pressed
Button pressed
NTC error
Water present
<always on>
<always on>
Button released
Button released
Button released
Button released
NTC ok
Water low
-
-
LED LED on LED off
Settings
Sensor
&
LED test
Boiler
reset
Mid-End / High-End
Selection
(to enable Personal Coffee
Memory button)
Country Selection
(General / France-Spain)
Off
Settings
Manual pump
calibration
(Volume adjustment)
Please note, as the appliance is equipped with a
capacitive touch panel as a user interface, special
attention is required to be able to enter several service
modes. The capacitive buttons need 0,5 seconds to
initialize after the mains is connected. During this
timeslot the capacitive buttons must not be touched,
otherwise you will not be able to enter the service
modes.
Service mode
The appliance is equipped with a dedicated service mode.
The service mode enables you to carry out some settings
and tests.
CALC
On/Off button
Regular LED
Toggle button
Strong LED
Calc LED
1-cup button
2-cup button
Repair instruction

HD7871/60 / HD7871/61
5-11
Boiler reset:
Boiler-reset-step 0 Entry to boiler reset mode:
. Connect mains;
. After . second and before . second operate the
cup button.
. Release all switches.
Settings:
Manual pump calibration
Please note that the volume adjustment to compensate for a
dierent country execution is now split in Volume adjustment
(calibrate Regular coee cup volume) and the Country
selection (set the corresponding Strong coee cup volume).
Service-step 0 Entry to calibration mode:
. Connect mains;
. After . second and before . second operate the
cup and cup buttons simultaneously.
On/o, cup and cup LEDs will be switched ON.
. Release all switches.
Service-step 1A Decrease calibration value:
. Push (and release) the cup button to decrease the
calibration value.
The On/O LED will be OFF for . seconds.
. Repeat step A. when required.
Service-step 1B Increase calibration value:
. Push (and release) the cup button to increase the
calibration value.
The On/O LED will be OFF for . seconds.
. Repeat step B. when required.
Service-step 2 Store calibration value:
. Operate the On/O button.
On/O LED will blink fast for . seconds and the
calibration value is stored.
. Release all switches.
The On/O and cup LED will be ON.
The memory LED will be OFF when ME is selected and
ON when HE is selected.
ME/HE selection
In this appliance ME (Mid-End) should be selected;
Strong LED o.
Service-step 3 Change HE/ME selection value:
. Push (and release) the cup button to change the
HE/ME value.
The strong LED will be OFF when ME is selected and
ON when HE is selected.
. Repeat step . when required.
Service-step 4 Store HE/ME selection value:
. Operate the On/O button.
On/O LED will blink fast for . seconds and the
HE/ME value is stored.
. Release all switches.
The On/O LED will be OFF.
Country selection
Service-step 5 Change country selection value:
. Push (and release) the cup button to change the
country value.
The regular LED will be OFF when a European selection
is selected and ON when a France selection is selected.
Note that when changing the country selection the pump
needs to be recalibrated again with a defined pump time.
. Repeat step . when required.
Service-step 6 Store country selection value:
. Operate the On/O button.
On/O LED will blink fast for . seconds and the
country selection value is stored.
. Release all switches.
Service-step 7 Select XL water tank (1.6L) or normal
water tank (0,93L) version:
. Push (and release) the cup button to change the
water tank size.
Toggle LED O  normal watertank.
Toggle LED On  XL watertank.
. Repeat step . when required.
* For the HD7873 with BRITA MAXTRA water filter please
select per default normal water tank.
Service-step 8 Store XL / normal water tank value:
. Operate the On/O button.
On/O LED will blink fast for . seconds and the water
tank selection value is stored.
. Release all switches.
All LEDs will be OFF.
When settings have been changed to change the coee
volume (Manual pump calibration or Country selection), the
appliance needs to be unplugged from the mains before the
new settings will take eect.
Repair instruction

HD7871/60 / HD7871/61
6-11
Sensor and LED test
To validate the assembly and electrical correctness of an
appliance, especially during testing and debugging phase,
a sensor and LED test is very useful. Please keep in mind
that it is not an automated test and only intended as
indication.
Service-step 0 Entry to test mode:
. Connect mains;
. After . second and before . second operate the
cup button.
. Release all switches.
. All LEDs will be ON for . seconds and after that
switch to OFF again.
Service-step 1 Sensor identication:
. Manually operate a button or sensor.
The related LED  refer to the table on p.  will be ON.
. Release the button or sensor.
The related LED  refer to the table on p.  will be
OFF.
Service-step 2 End test
. Disconnect mains end test program
PCBA replacement
When there is the need for a PCBA replacement the
default setting of the PCBA will be:
•Boiler empty flag  SET
•ME/HE selection  Mid end
•Country selection  General version
Please follow below way of working.
!
Start
End
Manual pump
calibration
(see previous page)
Country
selection
(see previous page)
ME / HE
selection
(see previous page)
(HD7872 / HD7873 only)
*) you can enable the Personal coffee
memory function on a HD7870
appliance, but the LED on the User
Interface will not be visible.
Sets the default
Regular coffee cup
volume
Sets the
corresponding
Strong coffee cup
volume
Enables the Personal
coffee memory
function*
Repair instruction
Volume adjustment
The PCB circuit board makes it possible to adjust the
volume output by means of pushing the onecup and
twocup user controls. How to adjust the volume output:
. Make sure the boiler is lled properly, otherwise
perform ll procedure see DFU for instructions.
. Switch appliance on and wait until the unit is ready to
brew.
. Make sure a pod holder is placed, but without a Coee
POD. (Only adjusting with plain water)
. Place a cup on the drip tray cover and push the one
cup button.
. When the appliance has nished it is stabilized to
perform the volume adjustment.
. Empty the cup, pod holder and push again for one cup
setting, measure the volume output with a graduated
beaker. In the table you can nd the requirements for
the minimum / maximum volume output cc/mL values
depending from the country version:
Onecup setting, Including Pod holder, water spec.
(Without Coee pod)
Min. water
cc/mL
Max. water
cc/mL
French / Spanish version  
General version  
. Unplug the appliance from the mains.
. Press the  and  cup button simultaneously and
plug the mains on.
. When above step succeeded the LED will turn on
continuously.
. Depending if the volume has to de or increase you
have to push the one or two cup button. Every time
you push the  or  cup button the LED will turn
o for . second (feedback to user) and the pump
time will be shortened or lengthened for . seconds
depending which button was pushed.
Pushing 1 cup button pump, time will be shorten with
. sec is approximately  . cc/mL (less coee).
Pushing 2 cup button pump, time will be lengthen
with . sec is approximately  . cc/mL (more
coee).
When the volume has to increase with  cc for
example, push the  cup button  times. The new
value will be stored when you switch the appliance o
by pushing the main switch (LED will turn o).
. Turn appliance on again and brew one cup, measure
the volume. In case the volume is not within
specication repeat steps   .
Note:
Changing a newly installed PCBA (by default delivered
with General version settings) into a French or Spanish
setting requires a decrease of the pump time by 2,5
seconds (or five pushes of the 1-cup button).

HD7871/60 / HD7871/61
7-11
Parts list
Pos Service code Description Remark
    Padholder assy  Deep black
    Padholder assy  Deep black
    Collector Deep black
    Spout assy HE Deep black
    Driptray cover Deep black
    Driptray Deep black
    XL water container (,L) Transparent
    XL water container lid Deep black
    Lid window Deep black
    Lid cover Deep black
    Lever Deep black
    Push rod
    Slider spring
    Brew chamber seal
    Ejector pin
    Distribution disk
    Brew chamber Deep black
    Front housing Deep black
    Boiler assy TCO V.   V
    NTC Oring
    NTC boiler assy
    Valve assy
    Screw cover Deep black
    Valve outlet Deep black
    Water container catch Deep black
    Back housing Deep black
    PCB Hall sensor water container
    PCB Cover
    Main PCB assy
    Pressure hose
    Tray panel (HE) assy Mystery black
    UI sticker (HE)
    UI PCBA capacitive
    Capacitive UI PCB cover
    Pump ULKA HF  V ˜ Hz
    Base plate Deep black
    Foot
    WLI sensor housing
    Tiewrap

HD7871/60 / HD7871/61
8-11
5
6
1
2
8
7
3
4
Exploded view

HD7871/60 / HD7871/61
9-11
14
16
17
18
15
a
19
20
21
Exploded view

HD7871/60 / HD7871/61
10-11
22
26
25
24
23 B
B
A
b
z
t
s
uv
yw
y
x
w
a
33
32
31
28
27
29
30
43
34
A
x
Exploded view

HD7871/60 / HD7871/61
11-11
AUTO OFF
coffee strength select
CALC
uv
ts
z
35
39
41
42
40
38
37 36
b
c
c
C
C
Exploded view