Philips HD7854/84 Service Manual

Coffee Maker Senseo “Latte Select”

HD7854/84

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 : 127 V

- Frequency : 50 - 60 Hz

- Power consumption : 2650 W
Boiler : 1450 W
Steam heater : 1200 W

Coffee volume overview

Min cc/mL

Brazil version 60 80 100

France version 60 100 140

General version 60 125 145

Normal cc/mL

- Standby power (switched off) :  1 W

- Standby power :  30 W
(switched on 30 min) (room temperature)

- Pressure Coffee system :  1.6 Bar

- Pressure Steam system :  1 Bar

- Contents water reservoir : 1200 cc/mL

- Contents milk reservoir : 120 cc/mL

- Auto shut off : 30 min

- Variable Coffee volume : Min, Normal and Max
(see Table)

- Colour setting : True red

Max cc/mL

Coffee/Milk

receipe

Cappuccino 160  16 156 124  69

Latte Macchiato 220  24 202 158  63

Café Latte 190  20 179 141  67

Published by Philips Consumer Lifestyle Printed in the Netherlands © Copyright reserved Subject to modification

Volume (cc) Weight (g)

cc max. (g) min. (g) (°C)

Indication temperature for chosen Coffee/Milk receipe

very depended from milk inlet temperature.

12/02

Build up: Steam circuit

Steam

ll

seal

Reflux

valve in

jj

milk

container

hh

HD7854/84

mn

o

l

Venting

p

f

valve

Three-way

valve with

kk

ii

Water

Container

Check valve

e

Boiler

g

h

Brew

Chamber

Legend: Low pressure tube

Electrical circuit

Temp. sensor
boiler

Temp. sensor
Thermo block

Lid close
detection
switch

gg

Thermo

block

a - p
aa - ll

k

Check valve

ff

ddee

Overpressure

valve

High pressure tube
Low pressure connections
High pressure connections

W

X

U

Z

CONNECTION

PCB

Y

S

V

T

d

ia

bbcc

aa

j

cb

Steam

pump

Water level
sensor

Milk tank
detection
sensor

Descale tool
detector

Water pump

Inside the appliance

TCO

L

Pump

M

Steam

M

pump

N

CONTROL

PCB

Push buttons

Boiler

Fuse

Fuse

Thermo block

Fuse

Fuse

USER INTERFACE

PCB

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DISASSEMBLY- AND RE-ASSEMBLY ADVISE

HD7854/84

Remove back cover.

- Remove screws (T15) from the back cover.

- Remove valve outlet.

- Start at the upper side of the back cover and stick a
screwdriver between the back cover and lid cover and gently
pull the back cover from the appliance so that a little chink
between back cover and lid becomes visible.

- Put the screwdriver into the 2 rectangular holes (snap locks)
at the back and gently pull the screwdriver such away that
the lips of the snap locks are bent outwards.

- If both clicks positions are loose, it is possible to remove the
back cover.

- Reassemble follow steps backwards.

Remove brew chamber:

Removing Brew chamber head handle as follows:

- Remove boiler from the snap lock position of the brew
chamber.

- Gently lift the backside (see picture) of the brew chamber
up and unhook the two snap locks on front with help of a
screw driver.

Remove brew chamber cover to reach user interface PCB.

- To remove the brew chamber lid cover place the screwdriver
on the positions (see picture) and lift the cover over the
snap locks on both positions.

- The cover lid can now be lifted a little.

- Remove the complete cover by unlocking the pushrod from
the brew chamber.

- The user interface PCB can be removed by unscrewing
3 screws (T8)

- Reassemble follow steps backwards.

Removing the “de-scaling Hall sensor” detector / steam
connection

- To be able to remove the Hall sensor, first unhook the spout
out of the housing.

- Hall sensor assy can be taken out.

- To disconnect the steam connector rotate it clockwise and
pull out of the spout.

- Remove connection PCB + PCB cover.

- Remove 3 way valve and electronic connectors (U & Z)

from the connection PCB.

- Reassemble follow above steps backwards.

Remove the “lid closed” detection micro switch.

Disassemble brewing head.

- Unlock the snap lock which is holding the micro switch
assembly. (see picture for detail)

- Gently pull out the switch assembly.

- Reassemble follow above steps backwards.

To reach the components like pump, PCB, steam heater
placed on the base.

- First remove back cover, brew chamber, 3-way valve, steam
pump and boiler.

- Remove the 4 Torx T15 screws (two at the base and two at
the housing part.

- Bend the 2 click snap locks with a screwdriver (see base),
the housing can now be removed.

- To remove the rest of the housing unlock the 4 snap locks at
the base and gently pull of the front cover.

- To reassemble follow above steps backwards.

OPTIONAL (accessories)

- HD7010 Latte Select Milk Container.

- 4222 259 43670 Senseo Descaler kit

3-11

REPAIR INSTRUCTION

HD7854/84

Descaling

Regular descaling will prolong the life of your appliance and
will guarantee optimal brewing results for a long time.

• Follow the steps in the section headed “Preparing the
appliance for use” see DFU (Direction for Use manual)

• Instead of only water use a mix of water and Lemon sour.

• For the best result leave the mix of water and Lemon sour
for about 30 Minutes in the appliance, before you start with
flushing the appliance.

• To get the best results repeat above-mentioned step once or
twice.

• When finished, flush the appliance twice by repeating the
above-mentioned steps only use water instead.

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:

1. Be sure the boiler is fi lled properly, other wise perform fi ll
procedure see DFU for instructions.

2. Switch appliance on and wait until the unit is ready to
brew.

3. Select the Coffee function
normal volume

4. Be sure a pod holder is placed, but without a Coffee
POD. (Only adjusting with plain water)

5. Place a cup on the drip tray cover and push the one-cup
button.

6. When the appliance has fi nished it is stabilized to perform
the volume adjustment.

7. Empty the cup, podholder and push again for one cup
setting, measure the volume output with a graduated
beaker. In the table you can fi nd the requirements for
the minimum / maximum volume output cc/mL values
depending from the country version:

and select

One-cup setting, normal volume,

Including Pod holder, water spec. (Without Coffee pod)

Min. water cc/mL Max. water cc/mL

Brazil version 81 101

France version 104 120

General version 125 141

8. Unplug the appliance from the mains.

9. Press the one and two cup button simultaneously and
plug the mains on.

10. When above steps succeeded the main on/off switch- ,
one cup- and two cup button led will be on.

11. 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 only be stored when you switch the
appliance off by pushing the main switch.
(LED will turn off)

12. Turn appliance on again and brew one cup, measure the
volume. In case the volume is not within specifi cation
repeat steps 7 – 11.

13. End.

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