Xerox OLYMPIA ELECTRONIC COMPACT - 4.05 Motor excitation, impression, resistance of coils

AUX.D~
AUJCC r;
LJO
-1@1~
VR 1
4.05 Motor excitation, impression, resistance of coils
Function/assembly
Adjustment
Release
Note
Function/assembly
Adjustment
Stepping motors I Keyboard PCB
Excitation (hold at the stepped point) of all stepping
motors with lower voltage VHL (see 3.11) for mechanical
adjustments
By shorting the contact points Aux D and Aux C under surface
of keyboard PCB at right side of keyboard (with metal tape)
Excitation of motors should be completed within 10 min,
or the motors will heat up!
Impression I Control PCB
Variable resistor VR 1 on control PCB
Turning clockwise: Higher impression
Turning counterclockwise: Lower impression
Resistance of coils : Typewheel motor
Horizontal motor
Vertical motor
Ribbon motor
Hammer solenoid
18 Ohm
18 Ohm
36 Ohm
36 Ohm
7 Ohm
(at each winding)