Philips Senseo Coffee Maker 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 - 60 Hz
• Power consumption: 1450 W
• Standby power: <1 W
• Contents reservoir: 1200 cc
• Colour setting: Dark stroke
• Sap coding: HD7860/60

Control PCB Diagram

The control unit features the following components:

• Water level sensor S1
• Brewhead detection sensor
• Temp. Sensor
• TCO (Thermal Cut-Off)
• Boiler
• Fuse (x2)
• Pump (M)
• CONTROL PCB
• Push buttons
• Connections for L (Line) and N (Neutral)

Optional (Accessories)

No specific issues reported.

Disassembly and Re-assembly Advice

To open the appliance, follow these steps:

1. Ensure all accessories like the tank, podholders, drip tray, spout, and collector are removed.
2. Remove the two screws located at the backside of the appliance.
3. Place the appliance on its back and remove the front panel by unlocking the two snap locks. [Diagram shows front panel removal with arrows indicating snap lock release.]
4. To remove the side panels, unlock the 2 snap locks on each side and gently pull the panels off. [Diagram shows side panel removal with arrows indicating snap lock release.]
5. Once the front and side panels are removed, the inner components can be accessed.

To reach the inner parts of the lid assembly, follow these steps:

1. Remove the two screws labeled 'A' which are holding the lid. [Diagram shows screws A securing the lid.]
2. To remove the lid cover, start by unlocking the 4 snap locks labeled 'B'. [Diagram shows snap locks B securing the lid cover.]

The lid cover is also fixed with two snap locks labeled 'C', which can be accessed with a screwdriver from the backside of the appliance. [Diagram shows lid cover with snap locks C accessible from the rear.]

Once the lid cover is removed, the inner parts can be reached.

To reassemble, please follow the steps in reverse order.

Repair Instruction: Descaling

Descaling is a crucial part of Senseo maintenance, recommended at least once every 3 months, and up to 6 times a year. This process prolongs the appliance's life and ensures optimal brewing results.

Use the correct descaling agent:

• Only citric acid-based descalers are suitable for the SENSEO® machine as they descale without causing damage. Refer to the 'Descaling procedure' section for the correct amount. Each descaling mixture can only be used once.
• Philips advises using the special SENSEO® Descaler (HD7006). Read the instructions on the descaling agent's packaging.
• Never use descaling agents based on mineral acids such as sulphuric acid, hydrochloric acid, sulphamic acid, or acetic acid (e.g., vinegar), as these can damage the SENSEO® coffee machine.
• Follow the steps in the section headed “Descale the appliance” as detailed in the DFU (Direction for Use manual).

Repair Instruction: Volume Adjustment

The PCB circuit board allows for adjusting the volume output by pressing the one-cup and two-cup user controls.

How to adjust the volume output:

1. Ensure the boiler is properly filled. If not, perform the fill procedure as per the DFU.
2. Switch the appliance on and wait until it is ready to brew.
3. Place a pod holder, but without a Coffee POD. (Adjustments should be made with plain water only).
4. Place a cup on the drip tray cover and press the one-cup button.
5. Wait for the appliance to stabilize after the volume adjustment process.
6. Empty the cup and podholder. Press the one-cup button again for the one-cup setting. Measure the volume output using a graduated beaker. The table below shows the minimum/maximum volume output (cc/mL) requirements depending on the country version:

   One-cup setting, Including Pod holder, water spec. (Without Coffee pod)	Min. water cc/mL	Max. water cc/mL
   France version	104	120
   General version	125	141

7. Unplug the appliance from the mains.
8. Press and hold both the 1-cup and 2-cup buttons simultaneously, then plug the mains cord back in.
9. If successful, the LED will turn on continuously.
10. To adjust the volume (increase or decrease), press the one-cup or two-cup button. Each press will turn the LED off for 0.5 seconds (providing feedback) and adjust the pump time by 0.5 seconds. Pressing the 1-cup button shortens the pump time by approximately 3.5 cc/mL (less coffee). Pressing the 2-cup button lengthens the pump time by approximately 3.5 cc/mL (more coffee). For example, to increase the volume by 10 cc, press the 2-cup button three times.
11. The new value is stored when the appliance is switched off by pressing the main switch (the LED will turn off).
12. Turn the appliance on again and brew one cup. Measure the volume. If the volume is not within specification, repeat steps 6-11.
13. End of procedure.

Repair Instruction: Automatic Filling Procedure

The Senseo PCB includes an automatic filling procedure software routine, primarily for backup purposes. Typically, consumers follow guidelines in the DFU.

Procedure:

• The consumer fills the water container and plugs the appliance into the mains.
• When the Senseo main switch is pressed, the main switch LED lights up continuously. This indicates the filling procedure is ongoing (first use).
• Pressing the one-cup or two-cup button initiates the pump to fill the boiler. The pump stops when the boiler is full (approximately 22 seconds pump time).
• Upon successful filling, the software clears a 'Boiler_empty_flag' in the Eeprom, signaling that the boiler is filled.
• This flag status is stored in the Eeprom chip even when the Senseo is switched off or disconnected from the mains.

Repair Instruction: Restoring the Boiler_empty_flag to Production Default

It may be necessary to empty the Senseo boiler, for example, if it freezes during winter transport. Restoring the 'Boiler_empty_flag' to its production default ensures the flush routine activates automatically upon installation by the consumer.

To set the Boiler_empty_flag:

• Keep the 1-cup button pressed while plugging in the power cord.
• The main switch LED will blink rapidly for approximately 1 second.
• To verify, reconnect the power cord and press the main switch. The main switch LED should light continuously, confirming the flag is set.

Parts List

Exploded Views

The following sections describe the exploded views of the Senseo coffee maker, detailing component placement.

Exploded View 1 (Page 6)

This view shows the main external components:

• 1: Padholder assy 1-cup
• 2: Padholder assy 2-cup
• 3: Driptray cover
• 4: Driptray
• 5: Water container

Exploded View 2 (Page 7)

This view details components of the upper assembly and brew head area:

• 6: Lid-Button assy
• 7: Slider spring
• 8: Ejector pin
• 9: Brew chamber seal
• 10: Distribution disk

Important Note: Always exchange the whole lid-button assembly (6). Never unscrew the screws labeled 'D' which hold the button case assembly. Doing so can compromise the air-tightness, leading to steam/water leakage and potential malfunction of the button assembly PCB.

Exploded View 3 (Page 8)

This view shows various internal and external panels and components:

• 11: PCB hall sensor lid close
• 12: Spout
• 13: Spout cover
• 14: Decorative spout cover
• 15: Left panel
• 16: Front panel
• 17: Collector
• 18: Right panel
• 19: Foot

Exploded View 4 (Page 9)

This view illustrates the internal electrical and plumbing components:

• 20: TCO cap
• 21: Boiler pin cover
• 22: Boiler assy TCO
• 23: Valve assy
• 24: PCB hall sensor water container
• 25: NTC O-ring
• 26: NTC assy
• 27: Pump
• 28: PCB assy main
• 31: Housing brew chamber detection sensor
• 32: Water container housing panel assy