P 12 /17
Circuit diagram
HP2050 and HP2051 (without flash light)
For other countries
Color index of lead wires
Black
White
Red
Orange
Blue
Field A
Brush holder
Field B
2
4
1
Brush holder
Switch 3
1 
M1 M2
C1 
C2
2
Field A
Field B
Noise suppressor
Power supply cord