User Manual
Table Of Contents
- PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY
- WARNING TO SERVICE PERSONNEL
- MICROWAVE MEASUREMENT PROCEDURE
- FOREWORD AND WARNING
- PRODUCT DESCRIPTION
- GENERAL INFORMATION
- OPERATION
- TROUBLESHOOTING GUIDE
- TEST PROCEDURES
- [1] Procedure A: MAGNETRON ASSEMBLY TEST
- [2] Procedure B: POWER TRANSFORMER TEST
- [3] Procedure C: HIGH VOLTAGE RECTIFIER TEST
- [4] Procedure D: HIGH VOLTAGE CAPACITOR TEST
- [5] Procedure E: THERMAL CUT OUT TEST
- [6] Procedure F: SECONDARY INTERLOCK SWITCH TEST
- [7] Procedure F: PRIMARY INTERLOCK SYSTEM TEST
- [8] Procedure G: MONITOR SWITCH TEST
- [9] Procedure H: BLOWN MINITOR FUSE TEST
- [10] Procedure I: NOISE FILTER TEST
- [11] Procedure J: CONTROL PANEL ASSEMBLY TEST
- [12] Procedure L: RELAY TEST
- [13] Procedure M: FOIL PATTERN ON THE PRINTED WIRING BOARD TEST
- TOUCH CONTROL PANEL ASSEMBLY
- PRECAUTIONS FOR USING LEAD-FREE SOLDER
- COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE
- [1] WARNING
- [2] OUTER CASE REMOVAL
- [3] POWER TRANSFORMER REMOVAL
- [4] HIGH VOLTAGE RECTIFIER ASSEMBLY AND HIGH VOLTAGE CAPACITOR REMOVAL
- [5] MAGNETRON REMOVAL
- [6] CONTROL PANEL ASSEMBLY REMOVAL
- [7] OVEN LAMP AND LAMP SOCKET REMOVAL
- [8] POSITIVE LOCK CONNECTOR (NO-CASE TYPE) REMOVAL
- [9] ANTENNA MOTOR REMOVAL
- [10] COOLING FAN MOTOR REMOVAL
- [11] POWER SUPPLY CORD REPLACEMENT
- [12] DOOR SENSING SWITCH/SECONDARY INTERLOCK SWITCH AND MONITOR SWITCH REMOVAL
- [13] DOOR SENSING SWITCH/SECONDARY INTERLOCK SWITCH AND MONITOR SWITCH ADJUSTMENT
- [14] DOOR PARTS REMOVAL
- [15] ANTENNA MOTOR SHAFT REPLACEMENT
- [16] INSTALLATION OF CERAMIC SHELF
- CIRCUIT DIAGRAMS
- Parts List
R21LCF
12 – 1
R21LCF
Service Manual
CHAPTER 12. CIRCUIT DIAGRAMS
[1] Pictorial Diagram (Figure S-1)
Figure S-1. Pictorial Diagram
FUSE
RED
BLK
L
N
WHT
RED
WHT
WHT
OR G
GRY
THER MAL
CUT-OUT
125ûC(OVEN)
OVE N LAMP
&SOCKET
THER MAL
CUT-OUT
145¡ C( MAG.)
FAN MOTOR
WHT
OR G
WHT
RED
WHT
HIGH VOL TAG E C OMP ONE NT S
MAG NE TR ON
H.V.
CAPACITOR
H.V.
R E C TIFIE R
POWER TRANSFORMER
GRN
POWER SUPPLY
CORD
COM
WHT
WHT
OR G
WHT
WHT
N.C .
N.O.
COM.
CONNECTOR
OR G
OR G
WHT
BLU
BRN
ANT E NNA
MO TOR
MO N MI TOR
SWITCH
PRIMARY
INTE R LO CK
RELAY
WHT
BLU
BLU
RED
OR G
RED
OR G
OR G
2
3
4
5
1
YLW
PNK
BLU
CN-A
RY2
RY1
NEU TR AL
HOT
EARTH
PNK
YLW
N.O.
COM.
DOOR S E NS ING S WITC H
SECONDARY
INTE R LO CK
SWITCH
NOT E :
Hot (OR G ) wire must be
connected to the terminal
with blue mark on the
oven light s ock et.
BLUE MARK
RED
BRN
RED
NOISE
FILTER