P 11 /17
Circuit diagram
HP2050 and HP2051 (without flash light)
For Great Britain, low voltage
Color index of lead wires
Black
White
Red
Orange
Blue
Transparent
Choke coil
Field A
Brush holder
Field B 
Field A
Brush holder
Field B
Connected to field core
2
4
1
Switch 3
1 
M1 M2
C1 
C2
2
Noise suppressor
Power supply cord