SHARP R-426HSF, R-402JKF, R-402JWF, R-408HSF, R-408JKF Service Manual
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SUPPLEMENTAL SERVICE MANUAL
S75M256R4X5XF
MICROWAVE OVENS
R-402JKF, R-402JWF, R-408HSF, R-408JKF,
R-408JWF, R-426HSF, R-428JKF, R-428JWF,
R-510HKF, R-510HWF, R-520JKF
This is a supplemental Service Manual for Microwave Oven models:
R-402JKF, R-402JWF, R-408HSF, R-408JKF,R-408JWF, R-426HSF, R-428JKF, R-428JWF,
R-510HKF, R-510HWF, R-520JKF.
These models are quite similar to the base models:
R-402JK, R-402JW, R-408HS, R-408JK,R-408JW, R-426HS, R-428JK, R-428JW,
R-510HK, R-510HW, R-520JK.
This supplemental manual must be used in conjunction with the base model service manual for
complete operation, service, safety and replacement parts information.
This supplemental manual is being issued to comply with the new FCC standards, that all
Microwave models produced from July 2005 must have a noise filter unit included, plus any
associated parts.
In the interest of user-safety the oven should be restored to its original condition and only parts identical to those specified
should be used.
WARNING TO SERVICE PERSONNEL: Microwave ovens contain circuitry capable of producing very high voltage and
current, contact with following parts may result in a severe, possibly fatal, electrical shock. (High Voltage Capacitor,
High Voltage Power Transformer, Magnetron, High Voltage Rectifier Assembly, High Voltage Harness etc..)
This document has been published to be used for after
SHARP ELECTRONCS CORPORATION
sales service only.
The contents are subject to change without notice.
Service Headquarters: Sharp Plaza, Mahwah, New Jersey, 07430-2135
NEW SCHEMATIC
GRY
RED
MAGNETRON
TEMPERATURE
FUSE
N.O.
(RY1)
OVEN
LAMP
RELAY
WHT
COM.
ORG
ORG
N.O.
ORG
OL
GRY
GRY
WHT
BRN
ORG
SECONDARY
INTERLOCK
RELAY
CONTROL UNIT
OVEN
LAMP
COM.
PRIMARY
INTERLOCK
SWITCH
CAVITY
TEMPERATURE
FUSE
"TO SOURCE"
FUSE (20A)
"TO SOURCE"
NOISE
FILTER
RED
"TO LOAD"
C2
C3
"TO LOAD"
BLK
H
GRN
MONITOR
120VAC
GND
60Hz
N
R2
C1
WHT
NOTES:
1.CIRCUITS SUBJECT TO CHANGE WITHOUT NOTICE.
2. TERMINAL WITH PROJECTION OR OPPOSITE BLUE MARK ON LAMP SOCKET
MUST BE CONNECTED TO NEUTRAL WIRE.
3. ONLY CERTAIN MODELS USE THE ABSOLUTE HUMIDITY SENSOR.
4. POWER TRANSFORMER TOP (FINISH LEAD) TERMINAL MUST BE CONNECTED TO THE NEUTRAL (WHT) WIRE.
(RY2)
N.O.
WHT
WHT
TTM
BRN
WHT
RED
RED
COM.
TURN
TABLE
MOTOR
B2
B1
F3
F2
F1
ORG
GRN
GRN
GRN
GRN
DOOR
PNK
FM
ORG
WHT
SENSING
SWITCH
HUMIDITY
SENSOR
FAN
MOTOR
MONITOR
SWITCH
WHT
RED
N.C.
COM.
WHT
RED
WHT
WHT
POWER
TRANSFORMER
HIGH
VOLTAGE
CAPACITOR
xx μF
HIGH
VOLTAGE
RECTIFIER
MAGNETRON
CHANGED PARTS
FW-VZB268MRE0 Main wire harness 1 AX
QFS-TA013WRE0 Magnetron temp fuse 1 AE
FPWBFA380WRKZ Noise filter unit 1 AM
LANGQB025MRP0 Noise unit angle 1 AE
FFS-BA016/KIT
Main wire harness
Actual wire harness may be different from illustration.
Monitor switch (V-16G-2C25) and fuse assembly (20A 250V AC)
Monitor switch
and
Magnetron
temp
fuse
fuse assembly
Noise filter unit
Noise unit angle
1AF
Monitor switch
and
fuse assembly
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