Circuit Board (A1) - Kärcher B80W Service Manual

4.5

Circuit board (A1)

Unscrew the fastening screws (see Chapter 4.2, Item 11) and
fold the cover plate back.
1 Connection terminal (X4) (covered), control board (A2)
2 Connection terminal (X3), microswitch (S7), detergent pump
(M6), water pump (M4), microswitch (S9), water stop valve (Y1)
3 Connection terminal (X2), main relay (K1) and power supply of
operating panel circuit board (A1)
4 Fuse 7.5 A (F3), water pump (M4)
5 Fuse 3 A (F2), control (A1)
6 Connection terminal (X1), battery charger (U1) (Bp pack only)
7 Circuit board (A1)
8 Fuse 30 A (F4), drive motor (M3)
9 Connection terminal of brush motors (M1 and M2) (plus)
10 Connection terminal 24 V (plus)
11 Connection terminal ground (minus)
12 Collection point ground (minus)
13 Connection terminal drive motor (M3) (plus)
14 Connection terminal drive motor (M3) (minus)
12
English 5.906-468.0 Rev. 00 (02/09)
15 Main relay (K1)
16 Connection terminal suction turbine (M5) (plus)
17 Plug (X4A), ground on performance circuit board (A2)
18 Covering plate