Sharp R-380LS

CONTENTS
CHAPTER 1. BEFORE SERVICING
CHAPTER 2. WARNING TO SERVICE PERSON-
NEL
CHAPTER 3. PRODUCT SPECIFICATIONS
CHAPTER 4. APPEARANCE VIEW
CHAPTER 5. OPERATION SEQUENCE
[1] OFF CONDITION........................................ 5-1
[2] MICROWAVE COOKING CONDITION....... 5-1
[3] POWER OUTPUT REDUCTION ................ 5-1
[4] SENSOR COOKING CONDITION.............. 5-1
CHAPTER 6. FUNCTION OF IMPORTANT COM-
PONENTS
[1] DOOR OPEN MECHANISM ....................... 6-1
[2] 1ST. LATCH SWITCH AND 2ND. IN-
TERLOCK RELAY CONTROL SWITCH..... 6-1
[3] MONITOR SWITCH ................................... 6-1
[4] FUSE F10A................................................. 6-1
[5] HIGH VOLTAGE FUSE .............................. 6-1
[6] OVEN TEMPERATURE FUSE ................... 6-1
[7] TURNTABLE MOTOR................................. 6-1
[8] FAN MOTOR............................................... 6-1
[9] NOISE FILTER............................................ 6-1
CHAPTER 7. TROUBLESHOOTING GUIDE
CHAPTER 8. TEST PROCEDURES
[1] A: MAGNETRON (MG) TEST..................... 8-1
[2] B: POWER TRANSFORMER TEST ........... 8-2
[3] C: HIGH VOLTAGE RECTIFIER TEST....... 8-2
[4] D: HIGH VOLTAGE CAPACITOR TEST..... 8-2
[5] E: SWITCH TEST ....................................... 8-3
[6] F: TEMPERATURE FUSE TEST ................ 8-3
[7] G: MOTOR WINDING TEST....................... 8-3
[8] H: FUSE F10A ............................................ 8-3
[9] I: NOISE FILTER TEST .............................. 8-3
[10] J: HIGH VOLTAGE FUSE TEST ................. 8-4
[11] K: TOUCH CONTROL PANEL ASSEM-
BLY TEST ................................................... 8-4
[12] L: KEY UNIT (MEMBRANE SWITCH)
TEST........................................................... 8-4
[13] M: RELAY TEST ......................................... 8-5
[14] N: PROCEDURES TO BE TAKEN
WHEN THE FOIL PATTERN ON THE
PRINTED WIRING BOARD (PWB) IS
OPEN.......................................................... 8-5
[15] O: AH SENSOR TEST................................ 8-5
CHAPTER 9. TOUCH CONTROL PANEL ASSEM-
BLY
[1] OUTLINE OF TOUCH CONTROL PAN-
EL ............................................................... 9-1
[2] ABSOLUTE HUMIDITY SENSOR CIR-
CUIT............................................................ 9-1
[3] SERVICING FOR TOUCH CONTROL
PANEL ........................................................ 9-2
CHAPTER 10. PRECAUTIONS FOR USING LEAD-
FREE SOLDER
CHAPTER 11. COMPONENT REPLACEMENT
AND ADJUSTMENT PROCEDURE
[1] BEFORE OPERATING ..............................11-1
[2] OUTER CASE REMOVAL .........................11-1
[3] POWER TRANSFORMER REMOVAL ......11-2
[4] HIGH VOLTAGE RECTIFIER ASSEM-
BLY, HIGH VOLTAGE FUSE AND HIGH
VOLTAGE CAPACITOR REMOVAL...........11-2
[5] MAGNETRON REMOVAL .........................11-2
[6] POSITIVE LOCK CONNECTOR (NO-
CASE TYPE) REMOVAL ...........................11-2
[7] CONTROL PANEL ASSEMBLY RE-
MOVAL.......................................................11-3
[8] GRAPHIC SHEET AND MEMBRANE
SWITCH REPLACEMENT.....................
....11-3
[9] TURNTABLE MOTOR REMOVAL .............11-3
[10] COOLING FAN MOTOR REMOVAL..........11-3
[11] POWER SUPPLY CORD REPLACE-
MENT.........................................................11-4
[12] 1ST. LATCH SWITCH, 2ND. INTER-
LOCK RELAY CONTROL SWITCH AND
MONITOR SWITCH ADJUSTMENT..........11-4
[13] 1ST. LATCH SWITCH, 2ND. INTER-
LOCK RELAY CONTROL SWITCH AND
MONITOR SWITCH ADJUSTMENT..........11-5
[14] DOOR REPLACEMENT ............................11-5
CHAPTER 12. MICROWAVE MEASUREMENT
CHAPTER 13. CIRCUIT DIAGRAMS
[1] Oven Schematic........................................ 13-1
[2] Pictorial Diagram....................................... 13-2
[3] Power Unit Circuit ..................................... 13-3
[4] CPU Unit Circuit........................................ 13-4
[5] LCD Circuit................................................ 13-5
[6] Printed Wiring Board (Figure S-3)............. 13-6
Parts List