Sharp KS-181ETV, Service Manual

Page 1: ... INSPECTION AFTER ASSEMBLING SIMPLIFIED TESTING METHOD PRECAUTIONS FOR WARM KEEPING TO GET TASTY RICE TROUBLESHOOTING Page 2 3 4 5 6 11 12 13 14 15 16 17 18 JAR RICE COOKER MODELS KS 18EV ETV KS 181EV ETV KS 182ETV In the interests of user safety Required by safety regulations in some countries the set should be restore to its original condition and only parts identical to those specified should b...

Page 2: ...n box Body SPECIFIC INFORMATION Power supply cord Control panel Bottom cover Thermostat Heater plate Model Rated voltage V Power consumption Cook W Power consumption Warm W Capacity l Heating method Outside dimension W x D x H mm Weight Approx kg KS 18EV ETV KS 181EV ETV KS 182ETV 220 600 25 1 8 Direct heating method 308 x 285 x 306 3 1 Dew receiver Latch hook cover Control panel COOK WARM ...

Page 3: ...nments Bed and breakfast type of environments Do not open the lid while cooking to avoid hot steam Do not use the inner pot with other heating appliances such as a gas stove The inner pot may be transformed and result in poor cooking food Do not give strong vibration of impact during cooking It may cause an irregular operation of thermostat to lead to poor rice cooker Always keep the surface of in...

Page 4: ...y and lid Do not shower or soak the cooker in the water Remove the dew receiver from the cooker clean it with a sponge or brush and dry it with a cloth Use a fine sandpaper slightly wet it to clean the dirty area wipe off with a sponge then dry it with a cloth Use a sponge to wash the inner pot and inner lid To remove smell after cleaning soak in boiling water for 30 minutes and dry it with a clot...

Page 5: ...Micro switch Temp fuse Warming COM NC Closed terminal Temp fuse angle Tube TA Neon lamp ass y Tube NA Temp fuse ass y Terminal AMP I Connector P 2 To body To outer pot Cord reel ass y Heater plate ass y Connecting ring Side heater ass y Micro SW COM NC To TRS angle ...

Page 6: ...Earth lead wire Place a blanket for protection Cord reel ass y Rice cooker Bottom cover REMOVE OF CORD REEL ASSEMBLY 1 Remove the cord reel assembly in accordance with REMOVE OF CORD REEL ASSEMBLY 2 Remove the screw holding the body from bottom cover 3 Insert the flat type screwdriver into the gap between the bottom cover and body to pry the bottom cover out of body 4 Now the bottom cover is free ...

Page 7: ...e to pliers pull the stop ring holding the switch leg ass y from the thermostat rod 4 Remove 2 screws holding the switch leg ass y from the outer pot 5 Now the switch leg ass y is free Note When mounting the switch assembly lock it in a manner that the switch button will not come in contact with the panel REMOVE OF SWITCH LEG ASSEMBLY Thermostat ass y Outer pot Switch leg ass y Thermostat rod Stop...

Page 8: ...rom the body 4 Insert the flat type screwdriver into the gap between the upper ring and the latch hook cover to pry the latch hook cover from the upper ring 5 Detach the dew receiver from the upper ring 6 Insert the flat type screwdriver or similar to pry the claw of the hinge cover and remove it 7 Remove 2 screws holding from the body 8 Separate the body from the upper ring by rubber hammer knock...

Page 9: ... 1 2 Note When reassembly bend the body pawl as it was Fig 8 2 Removal Assembly 1 2 Fig 7 Flat type screwdriver Control panel REMOVE OF SIDE HEATER ASSEMBLY Fig 9 Outer pot Side heater ass y 1 Remove the body in accordance with REMOVE OF BODY 2 Disconnect lead wires of side heater assembly from the heater plate ass y and the micro SW then remove the closed terminal from the lead wire of side heate...

Page 10: ...cover Body Flat type screwdriver 1 Remove the body in accordance with REMOVE OF BODY 2 Disconnect the lead wire from heater plate ass y and remove the screw holding temp fuse angle 3 Remove the temp fuse ass y from the temp fuse angle 4 Now the temp fuse ass y is free Note When reassembly take care so that the charged part of temperature fuse assembly does not protrude from the TUBE TA and securel...

Page 11: ...m the lid 4 Now the lid assembly is free DISASSEMBLING THE LID ASSEMBLY Fig 12 Holder plate Lid cover Lid 1 Remove the body in accordance with REMOVE OF BODY 2 Remove the lid assembly in accordance with REMOVE OF LID ASSEMBLY 3 Upside down the outer pot straighter 4 claws of outer pot holding to the upper ring 4 Remove the outer pot from the upper ring 5 Now the upper ring is free REMOVE OF UPPER ...

Page 12: ...d by hand as in Fig 14 is lightly swung to the left and right it moves in a perfect symmetry with respect to the hole of the outer pot 3 The switch button should be at the center of the panel hole Verification of Work and Function 1 Is there any part left uninstalled or any wrong wiring 2 Is the center adjustment of the switch leg ass y as specified 3 Finally energize for confirmation JAR RICE COO...

Page 13: ...ring Switch leg ass y Thermostat rod Fig 17 Temperature test Based on the temperature testing method explained earlier ensure proper performance for COOK and WARM Inner pot Outer pot ass y Work bench Fig 14 Fig 15 Thermostat ass y Outer pot ass y Inner pot Heater plate ass y Inner pot to be normally in contact with ...

Page 14: ...he heater plate Where bubbles do not occur more than 1 3 of the bottom periphery as shown in Fig 19 B contaminant deposits on the heater plate or deformation or damage on the inner pot may be existing Though such containment deposits can be removed by cleaning the inner pot deformed to the extent hardly rectified should be replaced with new one The same applies to the heater plate deformed In case...

Page 15: ...Minimum c Ambient temperature to be 20 o C to 30 o C d Water to be maintained at standard level on the level gauge 2 Judgement criteria a Individual lamp and switch to be turned as follows Cook indicator lamp goes ON Cook switch OFF after 20 to 30 minutes Warm indicator lamp goes ON b Check the rice layer on the pot bottom for the overdone degree Light overdone layer Normal Heavy overdone layer Re...

Page 16: ...ce with the lid and switch ON If the rice smells even under normal cooker and operation as well as proper temperature then conduct sterilization and disinfection in accordance with the following procedure since such smell appears to be caused by microbes Provided that a method under the following Note In Case the Rice Smells is recommended to the customers because the following procedure may cause...

Page 17: ...mbly Broken cord reel assembly Faulty cord reel assembly Faulty or loose wiring Faulty micro switch or maladjustment switch assembly Burn out of heater plate wire Faulty wiring Improper quantity of rice or water Faulty tightness due to deformed heater plate or inner pot bottom Faulty tightness due to contaminants etc deposited on heater plate or inner pot bottom Failure in complete engagement of l...

Page 18: ...se wiring Faulty lamp or resistor Maladjustment switch assembly Cooked by depressing the switch button forcibly with chopsticks etc Maladjustment or short circuit of switch assembly Faulty wiring Faulty insulation of heater plate assembly side heater assembly switch assembly cord reel assembly etc Water soaked lid cooker body etc Due to unsatisfactory handling twisted or bent cord Faulty cord reel...