Senseo Twist
HD7870/90
HD7870/91
Philips Consumer Lifestyle
Service Manual
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 requirements as
officially laid down at this moment.
TECHNICAL INFORMATION
• Voltage
: 220 - 240 V
• Frequency
: 50 Hz
• Power consumption
: 1450 W
• Standby power
: 0.25 W
• Color setting
: Star white
• Weight
: 2,05 Kg
• Dimensions H x W x D
- Appliance
: 31,5 x 24,9 x 30,8 cm
- F-Box
: 36 x 29 x 29,5 cm
• Length of cord
: 80 cm
• Contents water reservoir : 930 cc (ml)
Published by Philips Consumer Lifestyle
13/02
Printed in the Netherlands
ACCESSORIES
• CRP475/01 1-cup pod holder Black
• HD5015/01 2-cup pod holder Black
• CRP855/01 Drip tray Lime yellow
• CRP862/01 Drip tray cover Black
• CRP874/01 Spout Star white
• CRP872/01 Collector
• CRP864/01 Water container small
• CRP867/01 Water container lid Star white
OPTIONAL (accessories)
• CRP865/01 Water container big (incl. bucket, optional
Britta Filter to be purchased separately)
• CRP866/01 Water container lid
(for Water container big)
© Copyright reserved
Subject to modification
TECHNICAL INFORMATION
HD7870/90 / HD7870/91
Volume adjustment
The PCB circuit board makes it possible to adjust the
volume output by means of pushing the one-cup and twocup user controls. How to adjust the volume output:
1. Make sure the boiler is filled properly, otherwise
perform fill procedure see DFU for instructions.
2. Switch appliance on and wait until the unit is ready to
brew.
3. Make sure a pod holder is placed, but without a Coffee
POD. (Only adjusting with plain water)
4. Place a cup on the drip tray cover and push the onecup button.
5. When the appliance has finished it is stabilized to
perform the volume adjustment.
6. 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 find the requirements for
the minimum / maximum volume output cc/mL values
depending from the country version: (see Technical
specifications)
7. Unplug the appliance from the mains.
8. Press the 1- and 2 cup button simultaneously and plug
the mains on.
9. When above step succeeded the LED will turn on
continuously.
10. Depending if the volume has to de- or increase you
have to push the one- or two cup button. Every time
you push the 1- or 2 cup button the LED will turn
off for 0.5 second (feedback to user) and the pump
time will be shortened or lengthened for 0.5 seconds
depending which button was pushed.
Pushing 1 cup button pump, time will be shorten
with 0.5 sec is approximately − 3.5 cc/mL (less coffee).
Pushing 2 cup button pump, time will be lengthen
with 0.5 sec is approximately + 3.5 cc/mL (more
coffee).
When the volume has to increase with 10 cc for
example, push the 2 cup button 3 times. The new value
will be stored when you switch the appliance off by
pushing the main switch (LED will turn off).
11. Turn appliance on again and brew one cup, measure the
volume. In case the volume is not within specification
repeat steps 6 - 11.
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).
2-12
HD7870/90 / HD7870/91
SCHEMATICS
UI PCBA
On/Off button
1-cup button
Water level
sensor
NTC
2-cup button
Toggle button
Communi
cation
On/Off LED
Water
Supply
System
PCBA
1-cup LED
2-cup LED
Toggle LED
L
Boiler
TCO
Fuse
Regular LED
Strong LED
Pump M
Memory LED
Descale LED
Buzzer
Fuse
N
DISASSEMBLY- AND RE-ASSEMBLY ADVISE
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 off 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 3-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 3-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.
3-12
DISASSEMBLY- AND RE-ASSEMBLY ADVISE
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 (flat cable)
- Water level sensor (flat cable)
- (z) UI PCBA (flat 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.
HD7870/90 / HD7870/91
• 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 3 months, up to
6 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
(HD7011 or HD7012). 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® coffee
machine. Follow the steps in the section headed “Descale
the appliance” see DFU (Direction for Use manual).
• Undo the two click connections visible on the bottom
side of the appliance.
4-12
HD7870/90 / HD7870/91
REPAIR INSTRUCTION
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.
2-cup button
1-cup button
Calc LED
Strong LED
CALC
Service mode
The appliance is equipped with a dedicated service mode.
The service mode enables you to carry out some settings
and tests.
Toggle button
Regular LED
On/Off button
Service mode
1-cup button
Press the indicated button after connecting the mains
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.
Boiler_empty_flag set
Boiler
reset
Country
Selection
Blinking
General version
Off
France / Spain version
Blinking
Mid-end
Off
High-end
Blinking
ME / HE
Selection
1 & 2-cup button
Settings
Mid-End / High-End
Selection
Manual pump
calibration
Settings
(to enable Personal Coffee
Memory button)
(Volume adjustment)
Country Selection
(General / France-Spain)
2-cup button
Off
Sensor
&
LED test
Sensor
LED
LED on
LED off
On/Off button
On/Off LED
Button pressed
Button released
1-cup button
1-cup LED
Button pressed
Button released
2-cup button
2-cup LED
Button pressed
Button released
Toggle button
Toggle LED
Button pressed
Button released
NTC boiler
Descale LED
NTC error
NTC ok
Water level sensor
Regular LED
Water present
Water low
-
Strong LED
<always on>
-
-
Memory my cup LED
<always on>
-
5-12
REPAIR INSTRUCTION
BOILER RESET:
Boiler-reset-step 0 Entry to boiler reset mode:
1. Connect mains;
2. After 0.5 second and before 1.5 second operate the
1-cup button.
3. Release all switches.
SETTINGS:
Manual pump calibration
Please note that the volume adjustment to compensate for a
different country execution is now split in Volume adjustment
(calibrate Regular coffee cup volume) and the Country selection
(set the corresponding Strong coffee cup volume).
Service-step 0 Entry to calibration mode:
1. Connect mains;
2. After 0.5 second and before 1.5 second operate the
1-cup and 2-cup buttons simultaneously.
On/off, 1-cup and 2-cup LEDs will be switched ON.
3. Release all switches.
Service-step 1A Decrease calibration value:
1. Push (and release) the 1-cup button to decrease the
calibration value.
The On/Off LED will be OFF for 0.5 seconds.
2. Repeat step 1A.1 when required.
Service-step 1B Increase calibration value:
1. Push (and release) the 2-cup button to increase the
calibration value.
The On/Off LED will be OFF for 0.5 seconds.
2. Repeat step 1B.1 when required.
Service-step 2 Store calibration value:
1. Operate the On/Off button.
On/Off LED will blink fast for 1.0 seconds and the
calibration value is stored.
2. Release all switches.
The On/Off and 1-cup LED will be ON.
The memory LED will be OFF when ME is selected and
ON when HE is selected.
HD7870/90 / HD7870/91
ME/HE selection
In this appliance ME (Mid-End) should be selected;
Strong LED off.
Service-step 3 Change HE/ME selection value:
1. Push (and release) the 1-cup button to change the
HE/ME value.
The strong LED will be OFF when ME is selected and
ON when HE is selected.
2. Repeat step 3.1 when required.
Service-step 4 Store HE/ME selection value:
1. Operate the On/Off button.
On/Off LED will blink fast for 1.0 seconds and the
HE/ME value is stored.
2. Release all switches.
The On/Off LED will be OFF.
Country selection
Service-step 5 Change country selection value:
1. Push (and release) the 2-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.
2. Repeat step 5.1 when required.
Service-step 6 Store country selection value:
1. Operate the On/Off button.
On/Off LED will blink fast for 1.0 seconds and the
country selection value is stored.
2. Release all switches
The On/Off LED will be OFF.
When settings have been changed to change the coffee volume
(Manual pump calibration or Country selection), the appliance
needs to be unplugged from the mains before the new settings
will take effect.
6-12
HD7870/90 / HD7870/91
REPAIR INSTRUCTION
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:
1. Connect mains;
2. After 0.5 second and before 1.5 second operate the
2-cup button.
3. Release all switches.
4. All LEDs will be ON for 1.0 seconds and after that
switch to OFF again.
Service-step 1 Sensor identification:
1. Manually operate a button or sensor.
The related LED - refer to the table on p.4 will be ON.
2. Release the button or sensor.
The related LED - refer to the table on p.4 will be OFF.
Service-step 2 End test
1. Disconnect mains end test program
PCBA REPLACEMENT
When there is the need for a PCBA replace! ment 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
Manual pump
calibration
(see previous page)
Country
selection
(see previous page)
ME / HE
selection
(see previous page)
Sets the default
Regular coffee cup
volume
Sets the
corresponding
Strong coffee cup
volume
Enables the Personal
coffee memory
function*
(HD7872 / HD7873 only)
End
*) you can enable the Personal coffee
memory function on a HD7870
appliance, but the LED on the User
Interface will not be visible.
7-12
HD7870/90 / HD7870/91
PARTS LIST
Pos
Service code
Description
Remark
1
2
3
4
5
4222 259 44211
4222 259 44221
4222 247 67501
4222 259 52962
4222 247 67751
Padholder assy 1
Padholder assy 2
Collector
Spout assy complete
Driptray cover
Deep black
Deep black
Deep black
Star white
Deep black
6
7
8
14
15
4222 247 67491
4222 259 56611
4222 247 67671
4222 247 67631
4222 247 67571
Driptray
Water container assy complete
Water container lid
Lid window
Lid cover
Lime Yellow
Transparent Papillion
Star white
Lime Yellow
Star white
16
17
18
19
20
4222 247 67582
4222 247 67591
4222 240 01413
4222 247 06814
4222 240 05991
Lever
Push rod
Slider spring
Brew chamber seal
Ejector pin
Star white
21
22
23
24
25
4222 247 41922
4222 259 56781
4222 259 56591
4222 259 52091
4222 247 05134
Distribution disk
Brew chamber assy
Front housing
Boiler assy
NTC O-ring
26
27
28
29
30
4222 259 47301
4222 259 54481
4222 259 53641
4222 247 67441
4222 247 67461
NTC assy
Valve assy
Screw cover
Valve outlet
Water container catch
31
32
33
34
35
4222 247 67452
4222 259 51871
4222 247 67431
4222 259 51853
4222 247 06591
Back housing
Water level sensor
Main PCBA cover
Main PCBA assy
Pressure hose
Star white
36
37
38
39
40
4222 259 52912
4222 248 56621
4222 259 52833
4222 247 67721
4222 259 37244
Tray panel assy complete
UI sticker
UI PCBA capacitive
UI PCBA Cover
Pump
Mystery black
ME
41
42
4222 247 67401
4213 247 05256
Base plate
Foot
Lime Yellow
Lime Yellow Papillion
Star white printed
TCO V7.0 - 230 V
Lynx (Grivory)
Star white
Star white
Star white
ULKA HF 230 V ~50 Hz
8-12
EXPLODED VIEW
HD7870/90 / HD7870/91
8
1
7
2
3
4
5
6
9-12
EXPLODED VIEW
HD7870/90 / HD7870/91
14
15
16
17
18
a
19
20
21
10-12
HD7870/90 / HD7870/91
EXPLODED VIEW
27
a
y
w
28
A
x
22
24
b
A
25
26
y
29
30
w
x
31
32
z
23
34
s
B
33
t
u v
B
11-12
HD7870/90 / HD7870/91
EXPLODED VIEW
C
C
coffee
strength
select
CALC
AUTO OFF
c
37
36
z
38
b
t
39
s
35
u
40
v
c
41
42
12-12