SenseOpen/HwAnalysis/Senseo HD78XX

Components overview

• 24C02 EEPROM, serial I2C bus
• 46R47 8bit A/D Type OTP MCU controller
• boiler
• vibration pump (high-flow micropump)
• BT139 triac
• interference suppression capacitor
• Capacitors
• Diodes
• Resistors
• LEDs
• micro switches

Testpoints

TP1: between R1 and R5/, LP/LH TP2: N TP3: TP4: between AMP4 and Q2, NP (pump) TP5: GND, at D2 TP6: VDD, at D3 and C2 TP7: between C1/C11 and D1 TP8: liquid level mini PCB, between C7 and JX.1 TP9: liquid level mini PCB, between C7 and JX.2 TP10: liquid level mini PCB, between R19 and U3 TP11: between R4 and Q2 TP12: between R2 and TRIAC TP13: between R14 and S2 TP14: between R15 and S1 TP15: between R16 and S3 TP16: TP17: between R7 and R3/ uC Pin 15 / PA7 TP18: between R2 and uC Pin 18 / PA4/TMR TP19: between R14 and uC Pin 2 / PA2 TP20: between R15 and uC Pin 3 / PA1 TP21: between R16 and uC Pin 4 / PA0 TP22: TP23: between R13 and D4 TP24: EEPROM Pin 5 / SDA line TP25: at uC Pin 5 TP26: between R20 and uC Pin 1 / PA3/PFD TP27: EEPROM Pin 8 / WC line, uC Pin 10 / PD0/PWM TP28: TP29: between R9 and uC Pin 7 TP30: TP31: between R8 and uC Pin 11 / RES TP32: between R3 and uC Pin 16 / PA6 TP33: between R1 and TP34: between R4 and R20