Philips Senseo Twist HD7871/60 Service Manual

HD7871/60 / HD7871/612-11WaterSupplySystemPCBANTCUI PCBALNPump MWater levelsensorOn/Off button1-cup button2-cup buttonToggle buttonOn/Off LED1-cup LED2-cup LEDToggle LEDRegular LEDStrong LEDMemory LEDDescale LEDBuzzerCommunicationBoilerTCOFuseFuseSchematicsDisassembly- and Reassembly adviceBefore you start dismantling! For your safety besure the plug is disconnected from the mains!The product is designed for easy access tothe internal components. Make sure that allaccessories like tank, pod holder, drip tray, spoutand collector have been removed.To remove the back cover (31):Place the appliance facing its backside. Using a smallscrewdriver remove screw cover (28) and unscrew bothscrews A. You can now remove the back cover from theappliance, 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) andwork your way to the bottm. Please be aware that dueto the construction of the brewhead, the space inside islimited. There is a chance Hose (a) will come off the pillarwhen opening the brewhead (22).! Caution, the hinge spring on the back side of the appliancemay come out when the brewhead lid cover is beingremoved. When reinstalling it, mind your fingers as this is astrong 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 thebottom of the brewhead.• Unhook the boiler from the snap hook on the bottom ofthe 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 isstill connected to the top. You can now safely remove theboiler from the appliance.Note:Please note, after replacing the boiler the appliance hasto be restored to factory default. The filling procedure(cold flush), known from the predecessor Senseo’s is nolonger available after the flush before first use has beenexecuted. When the “restore to factory default” procedureis not carried out, a new and empty boiler can be switchedon, without having the protection of the initial flushprocedure, causing the thermal fuses in the heating elementto fail. After a boiler replacement or drained system, carryout the “Boiler reset” procedure! Then the initial flushprocedure can be carried out.