Table Of Contents - Sharp R-1500AT Service Manual

CHAPTER 1. BEFORE SERVICING
[1] GENERAL IMPORTANT INFORMA-
TION ...................................................... . .... 1-1
[2] WARNING.............................................. . .... 1-1
[3] CAUTION MICROWAVE RADIATION ... . .... 1-2
CHAPTER 2. WARNING TO SERVICE PERSON-
NEL
CHAPTER 3. PRODUCT DESCRIPTION
[1] SPECIFICATIONS ................................. . .... 3-1
[2] APPEARANCE VIEW ............................ . .... 3-1
[3] INSTALLATION INFORMATION ............ . .... 3-2
CHAPTER 4. OPERATION
[1] DESCRIPTION OF OPERATING SE-
QUENCE ............................................... . .... 4-1
[2] DESCRIPTION AND FUNCTION OF
COMPONENTS ..................................... . .... 4-2
CHAPTER 5. TROUBLESHOOTING GUIDE
CHAPTER 6. TEST PROCEDURES
[1] A: MAGNETRON TEST ......................... . .... 6-1
[2] B: POWER TRANSFORMER TEST ...... . .... 6-2
[3] C: HIGH VOLTAGE RECTIFIER (1)
AND/OR (2) TEST ................................. . .... 6-2
[4] D: HIGH VOLTAGE CAPACITOR (C1)
AND/OR (C2) TEST............................... . .... 6-3
[5] E: SECONDARY INTERLOCK SWITCH
(SW1) AND/OR (SW2) TEST ................ . .... 6-3
[6] F: PRIMARY INTERLOCK SYSTEM
TEST...................................................... . .... 6-3
[7] G: MONITOR SWITCH (SW3) AND/OR
(SW4) TEST........................................... . .... 6-3
[8] H: FUSE F8 TEST ................................. . .... 6-4
[9] I: WEAK POINT (FOR FAN MOTOR OR
EXHAUST FAN) TEST........................... . .... 6-4
[10] J: WEAK POINT (IN NOISE FILTER)
TEST...................................................... . .... 6-4
[11] K: TEMPERATURE FUSE TEST ........... . .... 6-4
[12] L: MAGNETRON THERMISTOR TEST. . .... 6-4
[13] M: EXHAUST THERMISTOR TEST ...... . .... 6-4
[14] N: NOISE FILTER TEST ........................ . .... 6-5
[15] O: KEY UNIT TEST ............................... . .... 6-5
[16] P: CONTROL UNIT TEST ..................... . .... 6-5
[17] Q: POWER UNIT TEST ......................... . .... 6-6
[18] R: RELAY UNIT TEST ........................... . .... 6-6
[19] S: ANTENNA SENSOR TEST ............... . .... 6-7
[20] T: MICROWAVE SENSOR TEST........... . .... 6-7
CHAPTER 7. TOUCH CONTROL PANEL ASSEM-
BLY
[1] SPECIAL FUNCTION FOR SERVICING ..... 7-1
[2] SERVICING FOR BRINTED WIRING
BOARDS................................................ . .... 7-7
CONTENTS
CHAPTER 8. PRECAUTIONS FOR USING LEAD-
FREE SOLDER
CHAPTER 9. COMPONENT REPLACEMENT AND
ADJUSTMENT PROCEDURE
[1] WARNINGS ........................................... . .... 9-1
[2] OUTER CASE AND REAR COVER RE-
MOVAL................................................... . .... 9-1
[3] POWER TRANSFORMERS (1) AND/
OR (2) REMOVAL .................................. . .... 9-2
[4] MAGNETRONS (1) AND/OR (2) RE-
MOVAL................................................... . .... 9-2
[5] MAGNETRON THERMISTOR ASSEM-
BLY REPLACEMENT ............................ . .... 9-2
[6] HIGH VOLTAGE CAPACITOR AND
HIGH VOLTAGE RECTIFIER ASSEM-
BLY REMOVAL ...................................... . .... 9-2
[7] POWER SUPPLY CORD REPLACE-
MENT..................................................... . .... 9-3
[8] HOW TO RELEASE THE POSITIVE
LOCK CONNECTOR. ............................ . .... 9-3
[9] EXHAUST FAN REMOVAL.................... . .... 9-3
[10] FAN MOTORS REMOVAL ..................... . .... 9-4
[11] ANTENNA MOTORS (UPPER AND
LOWER) REMOVAL .............................. . .... 9-4
[12] POWER UNIT REMOVAL...................... . .... 9-4
[13] CONTROL PANEL ASSEMBLY AND
CONTROL UNIT REMOVAL.................. . .... 9-4
[14] RELAY UNIT REMOVAL........................ . .... 9-4
[15] DOOR SENSING SWITCH (SW5)/SEC-
ONDARY INTERLOCK SWITCHES
(SW1, SW2) AND MONITOR SWITCH-
ES (SW3, SW4) REPLACEMENT ......... . .... 9-5
[16] OOR SENSING SWITCH (SW5)/SEC-
ONDARY INTERLOCK SWITCHES
(SW1, SW2) AND MONITOR SWITCH-
ES (SW3, SW4) ADJUSTMENT ............ . .... 9-5
[17] DOOR REPLACEMENT ........................ . .... 9-5
[18] DOOR DISASSEMBLY .......................... . .... 9-6
[19] OVEN LAMP AND LAMP SOCKET RE-
MOVAL................................................... . .... 9-8
CHAPTER 10. MICROWAVE MEASUREMENT
CHAPTER 11. TEST DATA AT A GLANCE
CHAPTER 12. CIRCUIT DIAGRAMS
[1] Oven Schematic..................................... . .. 12-1
[2] Figure S-1. Pictorial Diagram ................. . .. 12-3
[3] Figure S-2. Switching Power Supply Unit
Circuit..................................................... . .. 12-6
[4] Figure S-3. Relay Unit Circuit ................ . .. 12-7
[5] Figure S-4. Control Unit/ Antenna sen-
sor/ Microwave Sensor Circuit ............... . .. 12-8
[6] Figure S-5. Printed Wiring Board ........... . .. 12-9
Parts List