Table Of Contents - Sharp R-530EK-T Service Manual

PRECAUTIONS TO BE OBSERVED BEFORE
AND DURING SERVICING TO AVOID POSSIBLE
EXPOSURE TO EXCESSIVE MICROWAVE ENER-
GY
CHAPTER 1. WARNING TO SERVICE PERSON-
NEL
[1] Before Servicing..................................... . .... 1-1
[2] When the testing is completed,.............. . .... 1-1
[3] After repairing......................................... . .... 1-1
CHAPTER 2. MICROWAVE MEASUREMENT
PROCEDURE
[1] Requirements:........................................ . .... 2-1
[2] Preparation for testing:........................... . .... 2-1
[3] Leakage test: ......................................... . .... 2-1
CHAPTER 3. FOREWORD AND WARNING
[1] FOREWORD.......................................... . .... 3-1
[2] WARNING.............................................. . .... 3-1
[3] DANGER................................................ . .... 3-1
CHAPTER 4. PRODUCT DESCRIPTION
[1] SPECIFICATIONS ................................. . .... 4-1
CHAPTER 5. GENERAL INFORMATION
[1] GROUNDING INSTRUCTIONS............. . .... 5-1
[2] OVEN DIAGRAM ................................... . .... 5-1
CHAPTER 6. OPERATION
[1] DESCRIPTION OF OPERATING SE-
QUENCE ............................................... . .... 6-1
[2] OVEN SCHEMATIC ............................... . .... 6-2
[3] DESCRIPTION AND FUNCTION OF
COMPONENTS ..................................... . .... 6-3
CHAPTER 7. TROUBLESHOOTING GUIDE
CHAPTER 8. TEST PROCEDURES
[1] A: MAGNETRON ASSEMBLY TEST ..... . .... 8-1
[2] B: POWER TRANSFORMER TEST ...... . .... 8-1
[3] C: HIGH VOLTAGE RECTIFIER TEST.. . .... 8-1
[4] D: HIGH VOLTAGE CAPACITOR TEST..... 8-2
[5] E: TEMPERATURE FUSE OR THER-
MAL CUT-OUT TEST ............................ . .... 8-2
[6] F: SECONDARY INTERLOCK SWITCH
AND PRIMARY INTERLOCK SYSTEM
TEST...................................................... . .... 8-2
[7] G: MONITOR SWITCH TEST ................ . .... 8-3
[8] H: BLOWN MONITOR FUSE TEST ...... . .... 8-3
[9] I: NOISE FILTER TEST ......................... . .... 8-4
[10] J: TOUCH CONTROL PANEL ASSEM-
BLY TEST .............................................. . .... 8-4
CONTENTS
[11] K: KEY UNIT TEST................................ . .... 8-5
[12] L: RELAY TEST ..................................... . .... 8-5
[13] M: DEFROST CENTER TEST............... . .... 8-6
[14] N: FOIL PATTERN ON THE PRINTED
WIRING BOARD TEST.......................... . .... 8-6
[15] O: AH SENSOR TEST........................... . .... 8-7
CHAPTER 9. TOUCH CONTROL PANEL ASSEM-
BLY
[1] OUTLINE OF TOUCH CONTROL PAN-
EL .......................................................... . .... 9-1
[2] ABSOLUTE HUMIDITY SENSOR CIR-
CUIT....................................................... . .... 9-2
[3] SERVICING FOR TOUCH CONTROL
PANEL ................................................... . .... 9-3
CHAPTER 10. PRECAUTIONS FOR USING LEAD-
FREE SOLDER
CHAPTER 11. COMPONENT REPLACEMENT
AND ADJUSTMENT PROCEDURE
[1] WARNINGS ........................................... . ...11-1
[2] OUTER CASE REMOVAL ..................... . ...11-1
[3] POWER TRANSFORMER REMOVAL .. . ...11-2
[4] HIGH VOLTAGE RECTIFIER AND HIGH
VOLTAGE CAPACITOR REMOVAL....... . ...11-2
[5] MAGNETRON REMOVAL ..................... . ...11-2
[6] OVEN LAMP REMOVAL........................ . ...11-3
[7] POSITIVE LOCK CONNECTOR (NO-
CASE TYPE) REMOVAL ....................... . ...11-3
[8] CONTROL PANEL ASSEMBLY RE-
MOVAL................................................... . ...11-3
[9] TURNTABLE MOTOR REMOVAL ......... . ...11-3
[10] COOLING FAN MOTOR REMOVAL...... . ...11-3
[11] DOOR SENSING SWITCH/SECOND-
ARY INTERLOCK SWITCH AND MONI-
TOR SWITCH REMOVAL ...................... . ...11-4
[12] DOOR SENSING SWITCH/SECOND-
ARY INTERLOCK SWITCH AND MONI-
TOR SWITCH ADJUSTMENT ............... . ...11-4
[13] DOOR REPLACEMENT ........................ . ...11-5
CHAPTER 12. CIRCUIT DIAGRAMS
[1] Pictorial Diagram.................................... . .. 12-1
[2] Power Unit Circuit .................................. . .. 12-2
[3] LSI Unit Circuit ....................................... . .. 12-3
[4] Printed Wiring Board of Power Unit ....... . .. 12-4
Parts List