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Order No. PHAT070510C3

(REVISION : APR. 2012)

Service Manual

Automatic Rice Cooker

SR-GA281 / SR-GA421

SR-GA721

Export

SR-GA721

SR-GA281 / SR-GA421

© Panasonic Appliances (Thailand) Co., Ltd. 2012.
All rights reserved. Unauthorized copying and 
distribution is a violation of law.

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.

IMPORTANT SAFETY NOTICE

WARNING

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.

COOK

WARM

Summary of Contents for SR-GA281

Page 1: ... replaced with manufacturer s specified parts to prevent shock fire or other hazards Do not modify the original design without permission of manufacturer IMPORTANT SAFETY NOTICE WARNING 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 potentia...

Page 2: ...g Diagram SR GA721 3 Function of Center Thermostat and Thermal Fuse 4 Troubleshooting Guide 5 Testing Procedure 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 6 4 Part Exploded View Body SR GA721 6 5 Part Exploded View Packing SR GA721 6 6 Replacement Parts ...

Page 3: ...55 429 x 369 x 300 Weight 3 6 Kgs Power Cord Approx 1 0 M 10 1 Kgs 5 5 Kgs Cooking Capacity 5 15 L 140 C Center Thermostat Working Temperature More than equal to 80 C After 1 hour keep warm Keep Warm Temperature 3 7 L 5 23 L MALAYSIA SIN RBD SIN DBD HK Power Source 208V 50Hz 220V 50Hz 230V 50Hz 240V 50Hz 220V 50Hz 240V 50Hz 220V 50Hz 169 C Thermal Fuse Specification 113 C Rice scoop Accessories Me...

Page 4: ...reen Silicone Tube Brown Cord Bush 10 5 Thermal Fuse Wire Brown Cast Heater Lamp Resistor Lamp Resistor Switch Keep Warm Neon Lamp Rice Cooking Neon Lamp Gray Input Blue Brown N L E Green Mica Heater Ass y N Cord Bush Silicone Tube Blue Silicone Tube Brown After ass y Mica Heater Ass y must not overlie The Outer Case of Center Thermostat Water guard Cord Wire Earth Green Silicone Tube Green Therma...

Page 5: ...Neon Lame Rice Cooking Neon Lamp Small Middle Big E Green Input L N Brown Blu e 1 F T 2 F T Cord Wire Earth Green Cord Wire Blue N Cord Wire Brown L Heater lead wire B grey Thermal fuse lead wire Blue Thermal fuse lead wire Grey User position Heater lead wire C Brown Heater lead wire A Red Grey Brown Red Cathode lead wire Brown Keep warm lamp lead Red 1 0 5 ...

Page 6: ...puts the mirco switch in the cook position b The switch lever will push the rod which will allow the magnet to meet with the metal c When the rice is cooked and the proper temperature has been reached 134 C 6 C the metal and magnet will pop apart as described in the center thermostat operation above d The rod will push the switch lever and cause the auxiliary lever to depress the micro switch butt...

Page 7: ...n and be sure to use the replacement parts This fuse is not a resetting device and must be replaced after openning Pan collar or deformed Foreign matter adhering Remove foreign matter by of screw driver etc and then polish with 320 water paper while wetting it with water Body dented or deformed Pan bottom dented or deformed Heater surface deformed or corroded Repair or replace body Replace pan Rep...

Page 8: ... cause for fusing and replace fuse YES No continuity of thermal fuse NO Replace frame ass y YES No continuity of micro switch YES Adjust lever NO Switch lever has been properly adjusted Adjust switch lever NO Switch lever properly adjust Replace sheathed heater YES No continuity of sheathed heater Thermal fuse blown Explain correct usage YES Forced application of current Rice burns Brown color Rep...

Page 9: ...er cooking is done Explain correct usage YES Usage correct Too small or large in rice quantity Too small or large in water quantity Switched off once by hand in cooking process Switched off by shocks given in cooking process Rice not untied NO Replace pan or sheathed heater YES Poor contact between pan and sheathed heater Check with bubbling test NO Replace center thermostat YES Center thermostat ...

Page 10: ...hrough out the circumference of the pan bottom Proper B Bubbles does not generate on more than one quater part of the pan bottom circumference Improper 2 Evaporation Test 1 After satisfactory bubbling is confirmed remove the lid and put a weight on the cooker 2 Cover the entire pan bottom with 2 or 3 pieces of tissue paper or gauze and turn on the switch subsequently 3 The cooker is considered acc...

Page 11: ...Check and adjust this relationship as shown below The auxiliary lever presses the push button The Warm lamp come on To gain the above relationship adjust the auxiliary lever by bending it with long nose pliers The auxiliary lever does not press the push button The Cook lamp comes on Checking Adjusting When the boiling switch is turned on When the boiling switch is turned off ...

Page 12: ... 12 SR GA281 SR GA421 SR GA721 6 PARTS EXPLODED VIEW AND REPLACEMENT PARTS LIST 6 1 Parts Exploded View Body SR GA421 SR GA281 H I 3 3 1 3 2 2 1 21 For SR GA421 281 HK Only 2 1 2 2 15 1 11 13 12 15 15 2 ...

Page 13: ... x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x...

Page 14: ...7 509AK GLASS LID 3 1 ASR149 509 K PACKING RUBBER 3 2 AQE50T293 AQE50T294 ALUMINIUM PAN 5 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 AQE30T2941K0 HANDLE FOR BODY 8 AQE13T2931UG AQE13T2931WU AQE13T2941WU AQE13T2941UG BODY COMPLETE 9 1 1 1 1 1 1 1 AQS00T293 0U THERMOSTAT ASSY 6 S S S S S S S S S 1 AQY50H299 WU AQY50S2991WU AQY50V299 WU AQY50M299 WU AQY50H300 WU AQY50H300 UG ...

Page 15: ...1H3001UG PACKING CASE 1 AQY00H2991 OPERATING INSTRUCTION 2 AQY00S2992 UPPER PAD 3 ASR756 631 K ASR756T607 K ASR758 631 K ASR758T503AK PLASTIC SHEET 4 ASR758T613B ASR758T607B RUST PROOF PAPER 5 AQZ15T2941 CORD PROTECTOR 6 AQZ16T2931 LOWER PLATE ASR752T607 K LOWER PAD 7 AQZ17T2931 PACKING PAPER 8 Screws REF NO 1 1 1 SR GA421 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 1 1 1 1 1 1 6 6 1 1 1 1 1 1 1 1 1 1 S...

Page 16: ... 16 SR GA281 SR GA421 SR GA721 6 4 Parts Exploded View Body SR GA721 15 1 K 23 1 3 2 1 2 For SR GA721 USA Only 11 15 1 D 15 ...

Page 17: ... x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x...

Page 18: ...HANDLE FOR BODY 8 AQE13T2951WU AQE13T29522U AQY50M2981WU AQY50S2983WU BODY COMPLETE 9 THERMOSTAT ASSY 6 S S S S S S S S AQY50A2982N9 AQN00M298W9U AQN00A2982KU AQY50V2981WU NAME PLATE 10 AQN10T295 W9 AQN10A2981K0 AQN21M298 W9 AQN21A2981N0 SWITCH ASSY 11 DECORATIVE PANEL 13 AQN65M298 0U AQN65A298 0U LAMP BOARD ASSY 14 AQN31T295 W9 AQN31T295 K0 RICE COOKING LEVER ASSY 15 AQL70T295 0U SWITCH BUTTON 15...

Page 19: ...21 MAL DBD RBD USA WHITE WHITE WHITE SILVER 2 2 2 4 1 12 12 12 1 1 1 1 1 2 2 2 4 4 4 6 6 2 2 1 1 2 12 2 2 3 3 3 3 1 1 1 1 1 1 1 1 1 1 1 1 PART NO REMARK SAFETY PART NAME XTN4 10BVW XYN4 C10FNS XYN5 C10FNS TAPPING SCREW A P F HOLD SCREW B XTN5 16BFJ XYN4 C7FNS FOR MICA HEATER ASSY FOR FRAME ASSY 6 6 FOR BODY HANDLE FOR INTERNAL WIRING FOR WIRING TERMINAL ASSY FOR BOTTOM PLATE ASSY FOR BOTTOM PLATE ...

Page 20: ...rts 3 16 Revise part no 4 5 11 14 15 21 For similar actual parts 4 17 Revise part no 2 3 5 6 7 For similar actual parts 2 14 15 Addition parts of HK model in SR GA421 Addition parts no 3 1 3 2 and I but cancel no 22 HK model add white colour 4 18 19 Add Change new Part Name with Part No Part No 2 2 1 15 15 1 21 22 Screw C Packing Rust Paper 3 16 Addition picture of Lid Assy and Thermal Fuse Assy P...

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