General Important Information; Warning; Roduct Specifications - Sharp R-3A55 Service Manual

SERVICE MANUAL
MICROWAVE OVEN
R-3A55
GENERAL IMPORTANT INFORMATION
This Manual has been prepared to provide Sharp Corp. Service
engineers with Operation and Service Information.
It is recommended that service engineers carefully study the en-
tire text of this manual. so that they will be qualified to render sat-
isfactory customer service.
CAUTION
MICROWAVE RADIATION
Service engineers should not be exposed to the microwave en-
ergy which may radiate from the magnetron or other microwave
generating devices if it is improperly used or connected. All in-
put and output microwave connections, waveguides, flanges
andgaskets must be secured. Never operate the device without
a microwave energy absorbing load attached. Never look into
an open waveguide.
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WARNING
Never operate the oven until the following points are ensured.
(A) The door is tightly closed.
(B) The door brackets and hinges are not defective.
(C) The door packing is not damaged.
(D) The door is not deformed or warped.
(E) There is not any other visible damage with the oven.
Servicing and repair work must be carried out only by trained
service engineers.
All the parts marked "*" on parts list are used at voltages more
than 25OV.
Removal of the outer wrap gives access to potentials above
25ov.
PRODUCT SPECIFICATION
OPEARTING SEQUENCE
TOUCH CONTROL PANEL
AND ADJUSTMENT PROCEDURE A
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MICROWAVE MESUREMENT
WIRING DIAGRAMS
PARTS LIST
SHARP CORPORATION
OSAKA, JAPAN