54 @QI
28
Inspection of yoke assembly
(1) Open circuit test on coil • Check to ensure that there is continuity between connector A and brush EB 28. • If there is no continuity, it means an open circuit. Replace the yoke assembly 30.
/ 30
®02477
(2) Earth test on coil
28
• Check to ensure that there is no continuity between the yoke assem bly 30 and brush EB 28. • If there is continuity, it means a short circuit. Check the insulation. If repair is impossible, replace the brush EB 28 or yoke assembly 30.
CAUTION&------------
®02478
The coil may be short-circuited to the yoke assembly 30 due to the accumulation of worn-off metal particles from the brushes andior armature.
54-131