Panasonic SR-GA281 Service Manual

Panasonic SR-GA281 Service Manual

Automatic rice cooker
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Service Manual
SR-GA281 / SR-GA421
The service information is designed for experienced repair technicians only and is not designed for use by the general
public. It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting
to service a product. Products powered by electricity should be serviced or repaired only by experienced professional
technicians. Any attempt to service or repair the product or products dealt within this service information by anyone
else could result in serious injury or death.
There are special components used in this equipment which are important for safety. These parts are marked by
in the Schematic Diagrams, Circuit Board Diagrams, Exploded Views and Replacement Parts List. It is essential that
these critical parts should be replaced with manufacturer's specified parts to prevent shock, fire or other hazards. Do
not modify the original design without permission of manufacturer.
COOK
WARM
IMPORTANT SAFETY NOTICE
Order No. PHAT070510C3
Automatic Rice Cooker
SR-GA281 / SR-GA421
WARNING
© Panasonic Appliances (Thailand) Co., Ltd. 2012.
All rights reserved. Unauthorized copying and
distribution is a violation of law.
(REVISION : APR. 2012)
SR-GA721
Export
SR-GA721

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Summary of Contents for Panasonic SR-GA281

  • Page 1 Do not modify the original design without permission of manufacturer. © Panasonic Appliances (Thailand) Co., Ltd. 2012. All rights reserved. Unauthorized copying and...
  • Page 2: Table Of Contents

    5. Testing Procedure 10 - 11 6. Parts Exploded View and Replacement Parts List 6.1 Part Exploded View : Body : SR-GA421 / SR-GA281 6.2 Part Exploded View : Packing : SR-GA421 / SR-GA281 6.3 Replacement Parts List : SR-GA421 / SR-GA281 14 - 15 6.4 Part Exploded View : Body : SR-GA721...
  • Page 3: Specification

    SR-GA281 / SR-GA421 / SR-GA721 1. SPECIFICATION MODEL SR-GA421 SR-GA281 SR-GA721 Country SIN-DBD SIN-RBD MALAYSIA MALAYSIA SIN-DBD SIN-RBD Power Source 230V/50Hz 230V/50Hz 220V/50Hz 240V/50Hz 220V/50Hz 240V/50Hz 230V/50Hz 220V/50Hz 208V/50Hz Power Consumption Cooking 1400 W 950 W 2500 W Warming 47.5 W...
  • Page 4: Schematic Diagram

    SR-GA281 / SR-GA421 / SR-GA721 2. SCHEMATIC DIAGRAM 2.1 Circuit Diagram : SR-GA421 2.2 Wiring Diagram : SR-GA421 Cast Heater T.F. (Big) (Small) Lamp Resist Silicone Tub (Blue) Rice Cooking Neon Lamp Cord Bush Input Lamp Resist Green Silicone Tube...
  • Page 5: Circuit Diagram : Sr-Ga721

    SR-GA281 / SR-GA421 / SR-GA721 2.5 Circuit Diagram : SR-GA721 Cast Heater Blu e (Small) (Middle) (Big) Lamp Resist Rice Cooking Neon Lamp Lamp Resist . Input Green Keep Warm Neon Lame Switch Brown Mica Heater Ass’y 2.6 Wiring Diagram : SR-GA721...
  • Page 6: Function Of Center Thermostat And Thermal Fuse

    SR-GA281 / SR-GA421 / SR-GA721 3. FUNCTION OF CENTER THERMOSTAT AND THERMAL FUSE A. Center Thermostat The center thermostat senses when the bottom of the rice cooker pan reach 134°C ± 6°C. And it’s action turns off the cooking cycle and starts the warming cycle.
  • Page 7 SR-GA281 / SR-GA421 / SR-GA721 C. Thermal Fuse The thermal fuse is used to open the circuit to the cooking heater when the temperature has gone unusually high. This happens in cases such as incomplete contact between the heater and pan or if the switch button is forced to stay on keeping the heater energized abnormally.
  • Page 8: Troubleshooting Guide

    SR-GA281 / SR-GA421 / SR-GA721 4. TROUBLESHOOTING GUIDE When receiving the cooker to be repaired, be sure to always take charge of not only the cooker body but also the pan and the lid, and ask for details as to the symptom of the trouble.
  • Page 9 SR-GA281 / SR-GA421 / SR-GA721 Symptom Diagnosis Remedy • Earlier switching-off Poor contact between pan and sheathed heater? • Replace pan or • Poor cooking finish (Check with bubbling test) sheathed heater. Too hard Center thermostat defective? • Replace center...
  • Page 10: Testing Procedure

    SR-GA281 / SR-GA421 / SR-GA721 5. TESTING PROCEDURE 1. Bubbling Test Input the pan in the main body and lightly rotate the pan clockwise, and counter clockwise to set the pan on the heating plate properly. 1. Fill water until the center area of the pan bottom is depped and close the lid. Then turn on the boiling switch.
  • Page 11 SR-GA281 / SR-GA421 / SR-GA721 3. Boiling Control Lever Adjustment Such a mechanical operation as center thermostat goes up and down is used to turn on and off the micro-switch. Check and adjust this relationship as shown below. When the boiling switch is turned on...
  • Page 12: Parts Exploded View And Replacement Parts List

    SR-GA281 / SR-GA421 / SR-GA721 6. PARTS EXPLODED VIEW AND REPLACEMENT PARTS LIST 6.1 Parts Exploded View : Body SR-GA421 / SR-GA281 (For SR-GA421, 281 (HK) Only) 15-2 15-1 - 12 -...
  • Page 13: Part Exploded View : Packing : Sr-Ga421 / Sr-Ga281

    SR-GA281 / SR-GA421 / SR-GA721 6.2 Parts Exploded View : Packing SR-GA421 / SR-GA281 (FOR SR-GA421) (FOR SR-GA281) (FOR SR-GA421) - 13 -...
  • Page 14: Replacement Parts List : Sr-Ga421 / Sr-Ga281

    SR-GA281 / SR-GA421 / SR-GA721 Important safety notice : Components identified by mark have special characteristics important for safety. When replacing any of these components, use only manufacturer’s specified part. 6.3 Replacement Parts List : SR-GA421 / SR-GA281 Parts List SR-GA421 SR-GA281 REF.
  • Page 15 SR-GA281 / SR-GA421 / SR-GA721 Parts List SR-GA421 SR-GA281 REF. PART NAME PART NO. SAFETY REMARK SILVER WHITE WHITE WHITE WHITE WHITE SILVER WIRING TERMINAL ASSY AQL92T294 BOTTOM PLATE ASSY AQH20T2932WU COLOUR : WHITE AQH20T2941WU COLOUR : WHITE POWER CORD ASSY...
  • Page 16: Part Exploded View : Body : Sr-Ga721

    SR-GA281 / SR-GA421 / SR-GA721 6.4 Parts Exploded View : Body SR-GA721 (For SR-GA721 (USA) Only) 15-1 15-1 - 16 -...
  • Page 17: Part Exploded View : Packing : Sr-Ga721

    SR-GA281 / SR-GA421 / SR-GA721 6.5 Parts Exploded View : Packing SR-GA721 - 17 -...
  • Page 18: Replacement Parts List : Sr-Ga721

    SR-GA281 / SR-GA421 / SR-GA721 6.6 Replacement Parts List : SR-GA721 Parts List SR-GA721 REF. PART NAME PART NO. SAFETY REMARK WHITE WHITE WHITE SILVER LID ASSY AQB01T29510U AQB01A298-0U LID HANDLE AQB10T2941K0 COLOUR : BLACK LID KNOB ASR144-507AB COLOUR : BLACK...
  • Page 19 SR-GA281 / SR-GA421 / SR-GA721 Screws SR-GA721 REF. PART NAME PART NO. SAFETY REMARK WHITE WHITE WHITE SILVER TAPPING SCREW XTN4+10BVW FOR LID HANDLE P.F. HOLD SCREW XYN4+C10FNS FOR PROTECTING FRAME SEMS SCREW XYN5+C10FNS FOR CAST HEATER ASSY XYN5+C10FNS FOR MICA HEATER ASSY...
  • Page 20: Detail Change Notice

    SR-GA281 / SR-GA421 / SR-GA721 DETAIL CHANGE NOTICE Revision Item No. Page Detail Remark Nov. 2009 Addition “Revision Nov. 2009” For start change assy part Addition picture of part H Screw fix stand q’ty 3 pcs. Revise Bottom Plate Assy Add.

This manual is also suitable for:

Sr-ga421Sr-ga721

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