Data IC LA 7840/7841
PIN 1 = GND                                       0V
PIN 2 = VERT OUTPUT                    12V
PIN 3 = OUTPUT STAGE VCC         24V
PIN 4 = VER REF                              2.3V
PIN 5 = VER INPUT                          2.4V
PIN 6 = VCC                                       24V
PIN 7 = PUMP UP OUT                    2.2V                                                                                      caknurservis,blogspot,com