Troubleshooting Guide - Sharp KS-M102 Service Manual

1. Body circuit side
No. Problem
1
Rice cooker does not operate.
(Keys are inoperable.)
2 Some keys are inoperable.
3 Faulty timer operation
(Rice cooker does not
operate as programmed.)
Rice cooker does not cook.
4-1
4-2 Rice is not properly cooked.
Uneven cooking.
Rice uncooked at the core
due to premature shutoff.

TROUBLESHOOTING GUIDE

Cause of problem and location of malfunction
When WHT and BLU on PCB ass'y are not
supplied with 220V a.c. check the following.
Power cord is not plugged in the a.c. outlet.
Faulty wiring of cooking heater ass'y or
thermistor ass'y.
Faulty harness of cooking heater ass'y or
thermistor ass'y.
Open circuit in power cord or faulty cord reel.
Blown temperature fuse.
When WHT and BLU on PCB ass'y are supplied
with 220V a.c. check the following.
Faulty outer frame and PCB ass'y or
defective key top causing one or more keys
to remain depressed.
Faulty PCB ass'y.
Faulty outer frame and PCB ass'y parts or
faulty key top (rendering keys inoperable).
Faulty PCB ass'y.
Faulty wiring.
Faulty PCB ass'y.
Faulty cooking heater.
Faulty wiring of cooking heater ass'y.
Faulty harness of cooking heater ass'y.
Faulty thermistor.
Faulty PCB ass'y.
Inappropriate quantity of rice or water.
Lid is not closed tightly.
Steam cap is not installed properly.
Foreign matter on top surface of cooking
heater ass'y and/or bottom surface of inner pot
causing inadequate contact.
23
Remedy
Plug the power cord into
the a.c. outlet.
Repair the wire.
Replace the faulty part.
Replace the cord reel
ass'y.
Replace the thermistor
ass'y and faulty parts.
Repair the assembly or
replace faulty parts.
Replace the PCB ass'y.
Repair the assembly or
replace faulty parts.
Replace the PCB ass'y.
Repair the wire.
Replace the PCB ass'y.
Replace the cooking
heater ass'y.
Repair the wire.
Replace the cooking
heater ass'y.
Replace the thermistor
ass'y.
Replace the PCB ass'y.
Use correct amounts of
rice and water.
Repair the lid or close
the lid tightly.
Install the steam cap
securely.
Remove foreign matter
or replace faulty parts.