Ricoh G188 Service Manual page 410

Electrical Component Defects
Fuse
115V
FU2
FU3
FU4
For continued protection against risk of fire, replace only with same type and rating
of fuse.
G188/G189
Rating
220V - 240V
115°C No response
115°C No response
15V power to the IH coil unit is not supplied.
1A/250V
SC689 occurs.
Symptom when turning on the main switch
7-8 SM Appendix