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Panasonic SR-GA421 manual

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Table of contents for the manual

  • Page 1

    Service Manual Order No. PHA T070510C3 Automatic Rice Cooker SR-GA421/SR-GA281/SR-GA721 EXPORT © 2007 Panasonic Home Appliance (Thailand) Co.,Ltd All rights reserved. Unauthorized copying and distrbution is a violation of law . Specification Specification subject to change without notice. Model SR-GA421 SR-GA281 SR-GA721 Detail Country HK SIN-DBD [...]

  • Page 2

    2 SR-GA421/SR-GA281/SR-GA721 W ARNING This 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[...]

  • Page 3

    3 SR-GA421/SR-GA281/SR-GA721 L N MICA HEA TER ASS’Y CAST HEA TER LAMP RESIST . T .F . INPUT SWITCH LAMP RESIST . KEEP WARM NEON LAMP (BIG) (SMALL ) E Green RICE COOKING NEON LAMP Lamp Lead Wire A (Orange) Lead Wire (Orange) Lamp Lead Wire C (Brown) Twist one time Lamp Lead Wire B (Gray) Lever Earth Lead Wire (Green) Silicone Tube (Blue) N Twist t[...]

  • Page 4

    4 SR-GA421/SR-GA281/SR-GA721 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 positio n 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 ˚ MICA HEA TER ASS’[...]

  • Page 5

    5 SR-GA421/SR-GA281/SR-GA721 2. FUNCTION OF CENTER THERMOST A T AND THERMALFUSE 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 of f the cooking cycle, and starts the warming cycle. Refer to these figures showing the center thermostat construction and cooking po[...]

  • Page 6

    6 SR-GA421/SR-GA281/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 buttons is forced to stay on keeping the heater energized abnormally . This fuse is not a resetting[...]

  • Page 7

    7 SR-GA421/SR-GA281/SR-GA721 3. TROUBLESHOOTING GUIDE Symptom Diagnosis Remedy Cooking function ● Cooking fails (Cooking lamp is not shown) No continuity of cord? Y es ● Replace AC cord. No continuity of thermal fuse? Y es ● Locate cause for fusing and replace fuse. No continuity of micro switch? Y es ● Replace Frame ass’y . Center thermo[...]

  • Page 8

    8 SR-GA421/SR-GA281/SR-GA721 3. TROUBLESHOOTING GUIDE Symptom Diagnosis Remedy ● Earlier Switching-off ● Poor cooking finish T oo hard T oo soft Half-boiled Poor contact between pan and sheathed heater? (Check with bubbling test) Y es ● Replace pan or sheathed heater . Center thermostat defective? (Check with evaporation test) Y es ● Repla[...]

  • Page 9

    9 SR-GA421/SR-GA281/SR-GA721 4. 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 dipped, and close the lid. Then turn on the boiling switch. 2. When it beings boiling t[...]

  • Page 10

    10 SR-GA421/SR-GA281/SR-GA721 4. TESTING PROCEDURE 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. When the boiling switch is turned off. Checking The auxiliary [...]

  • Page 11

    1 1 SR-GA421/SR-GA281/SR-GA721 5. EXPLODED VIEW & P ACKING VIEW (SR-GA421/SR-GA281) EXPLODED VIEW (SR-GA421/SR-GA281)[...]

  • Page 12

    12 SR-GA421/SR-GA281/SR-GA721 5. EXPLODED VIEW & P ACKING VIEW (SR-GA421/SR-GA281) P ACKING VIEW (SR-GA421/SR-GA281)[...]

  • Page 13

    13 SR-GA421/SR-GA281/SR-GA721 6. REPLACEMENT OF P ARTS LIST & P ACKING LIST (SR-GA421/SR-GA281) P ARTS LIST Ref. No. Part Name Part No. SR-GA421 SR-GA281 Silver White White White White Silver HK SIN- DBD SIN- RBD MAL HK HK 1 LID ASS’Y AQB01T29310U 1 1 1 1 AQB01T29410U 1 1 2 LID HANDLE AQB10T2941K0 1 1 1 1 1 1 3 LID AQB01T293 1 1 1 1 AQB01T294[...]

  • Page 14

    14 SR-GA421/SR-GA281/SR-GA721 6. REPLACEMENT OF P ARTS LIST & P ACKING LIST (SR-GA421/SR-GA281) LIST OF SCREW Ref. No. Part Name Part No. SR-GA421 SR-GA281 Silver White White White White Silver HK SIN- DBD SIN- RBD MAL HK HK A T APPING SCREW XTN4+10BVW 2 2 2 2 2 2 B SEMS SCREW XYN5+C10FNS 1 1 1 1 1 1 C T APPING SCREW XTN4+10BFJ 1 1 1 1 1 1 D T [...]

  • Page 15

    15 SR-GA421/SR-GA281/SR-GA721 7. EXPLODED VIEW & P ACKING VIEW (SR-GA721) EXPLODED VIEW (SR-GA721) SR-GA721 / U.S.[...]

  • Page 16

    16 SR-GA421/SR-GA281/SR-GA721 7. EXPLODED VIEW & P ACKING VIEW (SR-GA721) P ACKING VIEW (SR-GA721)[...]

  • Page 17

    17 SR-GA421/SR-GA281/SR-GA721 8. REPLACEMENT OF P ARTS LIST & P ACKING LIST (SR-GA721) P ART LIST Ref. No. Part Name Part No. SR-GA721 White White White Silver MAL SIN-DBD SIN-RBD USA 1 LID ASS’Y AQB01T29510U 1 1 1 1QB01A298-0U 1 2 LID HANDLE AQB10T2941K0 1 1 1 1 3 LID AQB01T2951 1 1 1 AQB01A298 1 4 MEASURING CUP AQK00T295 1 1 1 1 5 P AN AQE5[...]

  • Page 18

    18 SR-GA421/SR-GA281/SR-GA721 8. REPLACEMENT OF P ARTS LIST & P ACKING LIST (SR-GA721) LIST OF SCREW Ref. No. Part Name Part No. SR-GA721 White White White Silver MAL SIN-DBD SIN-RBD USA A T APPING SCREW XTN4+10BVW 2 2 2 2 B P .F . HOLD SCREW XYN4+C10FNS 4 4 4 4 C SEMS SCREW XYN5+C10FNS 1 1 1 1 XYN5+C10FNS 1 1 1 1 D T APPING SCREW XTN4+8BFJ 2 2[...]