Read Sharp R-259M (serv.man2) Service Manual online
CONTENTS
CHAPTER 1. BEFORE SERVICING
[1] GENERAL IMPORTANT INFORMATION.....1-1
[2] CAUTION MICROWAVE RADIATION ........1-1
[3] WARNING ..................................................1-1
[1] GENERAL IMPORTANT INFORMATION.....1-1
[2] CAUTION MICROWAVE RADIATION ........1-1
[3] WARNING ..................................................1-1
CHAPTER 2. WARNING TO SERVICE PERSONNEL
CHAPTER 3. PRODUCT SPECIFICATIONS
CHAPTER 4. APPEARANCE VIEW
[1] OVEN .........................................................4-1
[2] TOUCH CONTROL PANEL........................4-1
[1] OVEN .........................................................4-1
[2] TOUCH CONTROL PANEL........................4-1
CHAPTER 5. OPERATION SEQUENCE
[1] OFF
[1] OFF
CONDITION .......................................5-1
[2] MICROWAVE COOKING CONDITION ......5-1
[3] POWER OUTPUT REDUCTION................5-1
[3] POWER OUTPUT REDUCTION................5-1
CHAPTER 6. FUNCTION OF IMPORTANT COMPO-
NENTS
[1] DOOR OPEN MECHANISM.......................6-1
[2] 1ST. LATCH SWITCH AND 2ND. INTER-
NENTS
[1] DOOR OPEN MECHANISM.......................6-1
[2] 1ST. LATCH SWITCH AND 2ND. INTER-
LOCK RELAY CONTROL SWITCH............6-1
[3] MONITOR
SWITCH
...................................6-1
[4] FUSE
T6.3A ...............................................6-1
[5] HIGH
VOLTAGE
FUSE
..............................6-1
[6] TEMPERATURE
FUSE
150C (OVEN) .......6-1
[7] TURNTABLE
MOTOR ................................6-1
[8] FAN
MOTOR ..............................................6-1
[9] NOISE
FILTER ...........................................6-1
CHAPTER 7. TROUBLESHOOTING GUIDE
[1] FOREWORD ..............................................7-1
[2] CHART .......................................................7-1
[1] FOREWORD ..............................................7-1
[2] CHART .......................................................7-1
CHAPTER 8. TEST PROCEDURES
[1] Procedure A: MAGNETRON TEST ............8-1
[2] Procedure
[1] Procedure A: MAGNETRON TEST ............8-1
[2] Procedure
B:
HIGH VOLTAGE TRANS-
FORMER TEST..........................................8-1
[3] Procedure C: HIGH VOLTAGE RECTIFI-
ER TEST ....................................................8-2
[4] Procedure D: HIGH VOLTAGE CAPACI-
TOR TEST ..................................................8-2
[5] Procedure E: SWITCH TEST .....................8-2
[6] Procedure F: TEMPERATURE FUSE
[6] Procedure F: TEMPERATURE FUSE
TEST ..........................................................8-2
[7] Procedure G: MOTOR WINDING TEST.....8-3
[8] Procedure H: FUSE T6.3A .........................8-3
[9] Procedure I: NOISE FILTER TEST.............8-3
[10] Procedure J: HIGH VOLTAGE FUSE
[8] Procedure H: FUSE T6.3A .........................8-3
[9] Procedure I: NOISE FILTER TEST.............8-3
[10] Procedure J: HIGH VOLTAGE FUSE
TEST ..........................................................8-3
[11] Procedure K: TOUCH CONTROL PANEL
ASSEMBLY TEST ......................................8-3
[12] Procedure L: KEY UNIT (MEMBRANE
SWITCH) TEST ..........................................8-4
[13] Procedure M: RELAY TEST .......................8-4
[14] Procedure N: PROCEDURES TO BE TAK-
[14] Procedure N: PROCEDURES TO BE TAK-
EN WHEN THE FOIL PATTERN ON THE
PRINTED WIRING BOARD (PWB) IS
OPEN .........................................................8-5
PRINTED WIRING BOARD (PWB) IS
OPEN .........................................................8-5
CHAPTER 9. TOUCH CONTROL PANEL ASSEM-
BLY
[1] OUTLINE OF TOUCH CONTROL PANEL
BLY
[1] OUTLINE OF TOUCH CONTROL PANEL
..... 9-1
[2] DESCRIPTION
OF
LSI ............................... 9-1
[3] SERVICING FOR TOUCH CONTROL
PANEL ........................................................ 9-3
CHAPTER 10. PRECAUTIONS FOR USING LEAD-
FREE SOLDER
FREE SOLDER
CHAPTER 11. COMPONENT REPLACEMENT AND
ADJUSTMENT PROCEDURE
[1] BEFORE
ADJUSTMENT PROCEDURE
[1] BEFORE
OPERATING ..............................11-1
[2] OUTER CASE REMOVAL .........................11-1
[3] HIGH VOLTAGE TRANSFORMER RE-
[3] HIGH VOLTAGE TRANSFORMER RE-
MOVAL ......................................................11-1
[4] HIGH VOLTAGE RECTIFIER, HIGH
VOLTAGE FUSE AND HIGH VOLTAGE
CAPACITOR REMOVAL............................11-2
CAPACITOR REMOVAL............................11-2
[5] MAGNETRON
REMOVAL .........................11-2
[6] POSITIVE LOCK CONNECTOR (NO-
CASE TYPE) REMOVAL ...........................11-2
[7] TURNTABLE
MOTOR
REMOVAL .............11-2
[8] COOLING FAN MOTOR REMOVAL..........11-3
[9] POWER SUPPLY CORD REPLACE-
[9] POWER SUPPLY CORD REPLACE-
MENT.........................................................11-3
[10] CONTROL PANEL ASSEMBLY REMOV-
AL ..............................................................11-4
[11] GRAPHIC SHEET AND MEMBRANE
SWITCH REPLACEMENT.........................11-4
[12] 1ST. LATCH SWITCH, 2ND. INTERLOCK
RELAY CONTROL SWITCH AND MONI-
TOR SWITCH ADJUSTMENT ...................11-5
TOR SWITCH ADJUSTMENT ...................11-5
[13] 1ST. LATCH SWITCH, 2ND. INTERLOCK
RELAY CONTROL SWITCH AND MONI-
TOR SWITCH ADJUSTMENT ...................11-5
TOR SWITCH ADJUSTMENT ...................11-5
[14] DOOR REPLACEMENT ............................11-5
CHAPTER 12. MICROWAVE MEASUREMENT
CHAPTER 13. CIRCUIT DIAGRAMS
[1] Oven
[1] Oven
Schematic ....................................... 13-1
[2] Pictorial
Diagram
(Figure S-1) .................. 13-2
[3] Control
Unit
Circuit (Figure S-2) ............... 13-3
[4] Printed Wiring Board (Figure S-3) ............ 13-4
Parts Guide
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