CONTENTS
CHAPTER 1. BEFORE SERVICING
[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
CHAPTER 5. OPERATION SEQUENCE
[1] OFF
CONDITION .........................................................5-1
[2] MICROWAVE
COOKING
CONDITION ...................5-1
[3] POWER
OUTPUT
REDUCTION ..............................5-1
CHAPTER 6. FUNCTION OF IMPORTANT COMPO-
NENTS
[1] DOOR
OPEN
MECHANISM.....................................6-1
[2] MONITORED LATCH SWITCH AND
LATCH 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] TIMER
MOTOR ..............................................................6-1
CHAPTER 7. TROUBLESHOOTING GUIDE
[1] FOREWORD ..................................................................7-1
[2] CHART ............................................................................7-1
CHAPTER 8. TEST PROCEDURES
[1] Procedure A: MAGNETRON (MG) TEST...............8-1
[2] Procedure B: HIGH VOLTAGE TRANS-
FORMER TEST ..............................................................8-2
[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
TEST ...............................................................................8-3
[7] Procedure G: MOTOR WINDING TEST.................8-3
[8] Procedure H: FUSE T6.3A ........................................8-3
[9] Procedure I: HIGH VOLTAGE FUSE TEST ..............8-3
[10] Procedure J: TIMER MOTOR TEST .........................8-3
CHAPTER 10. COMPONENT REPLACEMENT AND
ADJUSTMENT PROCEDURE
[1] BEFORE
OPERATING ................................................... 10-1
[2] OUTER CASE REMOVAL ............................................. 10-1
[3] HIGH VOLTAGE TRANSFORMER RE-
MOVAL ........................................................................... 10-2
[4] HIGH VOLTAGE RECTIFIER ASSEMBLY,
HIGH VOLTAGE FUSE AND HIGH VOLT-
AGE CAPACITOR REMOVAL .................................... 10-2
[5] MAGNETRON
REMOVAL .......................................... 10-2
[6] POSITIVE LOCK CONNECTOR (NO-
CASE TYPE) REMOVAL ............................................. 10-2
[7] TURNTABLE
MOTOR
REMOVAL ............................. 10-3
[8] COOLING
FAN
MOTOR
REMOVAL........................ 10-3
[9] POWER
SUPPLY
CORD
REPLACE-
MENT.............................................................................. 10-4
[10] CONTROL PANEL ASSEMBLY REMOV-
AL ................................................................................... 10-4
[11] MONITORED LATCH SWITCH, LATCH
SWITCH AND MONITOR SWITCH RE-
MOVAL .......................................................................... 10-4
[12] MONITORED LATCH SWITCH, LATCH
SWITCH AND MONITOR SWITCH AD-
JUSTMENT................................................................... 10-4
[13] DOOR REPLACEMENT .............................................. 10-5
CHAPTER 11. MICROWAVE MEASUREMENT
CHAPTER 12. CIRCUIT DIAGRAMS
[1] Oven
Schematic ........................................................ 12-1
[2] Pictorial
Diagram
(Figure
S-1) .............................. 12-2
Parts List
R-20A1(S)VN
