Schematic Diagrams - Samsung MR7491G Service Manual

9. Schematic Diagrams

9-1 Schematic Diagrams
NOTE : CIRCUIT SHOWN WITH DOOR IS OPENED POSITION.
NOTE : FOR SERVICE REPLACEMENT USE 16 GA 105ûC
T HERMOPLASTIC COVERED WIRE EXCEPT
FOR HIGH VOLTAGE LEADS OR AS NOTED ON SPECIAL LEADS.
ASSY CHOKE P.C.B
(L)
POWER CORD
AC 120V/60Hz
G
WHT
GND
(N)
CONDITION
1. INPUT : 120V 60HZ
2. DOOR : OPEN
3. LAMP : ON
4. : P.C.B PATTERN
5. : P.C.B IN/OUT POINT
(CON1)
COLOR SYMBOL
WHT : WHITE
BLK : BLACK
YEL : YELLOW
BLU : BLUE
ORG : GRANGE
G : GREEN
RED : RED
Samsung Electronics
MGT
TCO
BLK
G
GND
NO BLK BLK
COM
BLK BLU
PRIMARY
INTERLOCK SWITCH
MAGNETRON
FA
WHT
BLK
BLK
HIGH VOLTAGE
TRANSFORMER
PRIMARY
INTERLOCK S/W
BLK
BLK
YEL
BLU
130V
L
40W
120V
RED
FM
21V
0V
WHT
WHT
WHT
POWER RELAY
NO BLU RED
COM
WHT
SECONDARY
INTERLOCK SWITCH
HIGH VOLTAGE
RED
F
RED
POWER MUST BE DISCONNECTED
BEFORE SERVICING THIS APPLIANCE
H. V. TRANS
BLK
BLK
ORG
120V
COM
DM
NC
NO
INTERLOCK
MONITOR
SWITCH
BLU
0V
WHT
COM
RED
SECONDARY
INTERLOCK
SWITCH
NC BLU
COM COM
BLK
INTERLOCK DOOR
SENSING SWITCH
MONITOR SWITCH
DIODE
TO CHASSIS
HIGH VOLTAGE CAPACITOR
ORG
RED
WARNING
H. V. DIODE
(0.95uF)
H. V. CAPACITOR
F FA
MAGNETRON
NO ORG
ORG
9-1