R-2498G (serv.man2). Part 1 Text(1-25) - Sharp Home Appliance Service Manual (repair manual)

Page

CAUTION, MICROWAVE RADIATION ......................................................................................................  1
WARNING ................................................................................................................................................... 1
PRODUCT SPECIFICATIONS ...................................................................................................................  2
GENERAL IMPORTANT INFORMATION ................................................................................................... 2
APPEARANCE VIEW .................................................................................................................................  3
OPERATION SEQUENCE .........................................................................................................................  4
FUNCTION OF IMPORTANT COMPONENTS ..........................................................................................  5
SERVICING ...............................................................................................................................................  7
TEST PROCEDURE ................................................................................................................................  10
TOUCH CONTROL PANEL ASSEMBLY .................................................................................................. 17
COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE .....................................................  21
MICROWAVE MEASUREMENT ..............................................................................................................  26
WIRING DIAGRAM ..................................................................................................................................  27
PICTORIAL DIAGRAM .............................................................................................................................  28
CONTROL PANEL CIRCUIT .................................................................................................................... 29
PRINTED WIRING BOARD ...................................................................................................................... 30
PARTS LIST .............................................................................................................................................  31

S7602R2498K//

In interests of user-safety the oven should be restored to its original
condition and only parts identical to those specified should be used.

1

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
entire text of this manual, so they will be qualified to render
satisfactory customer service.

Service engineers should not be exposed to the microwave
energy which may radiate from the magnetron or other
microwave generating devices if it is improperly used or
connected. All input and output microwave connections,
waveguides, flanges and gaskets must be secured. Never
operate the device without a microwave energy absorbing
load attached. Never look into an open waveguide or
antenna while the device is energized.

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 250V.

Removal of the outer wrap gives access to potentials above
250V.

All the parts marked "

∆

" on parts list may cause undue

microwave exposure, by themselves, or when they are dam-
aged, loosened or removed.

PRODUCT SPECIFICATIONS

FUNCTION OF IMPORTANT
COMPONENTS

SERVICING AND
TROUBLESHOOTING CHART

TEST PROCEDURE

APPEARANCE VIEW

OPERATING SEQUENCE

GENERAL INFORMATION

MICROWAVE MEASUREMENT

COMPONENT
REPLACEMENT AND
ADJUSTMENT PROCEDURE

TOUCH CONTROL PANEL
ASSEMBLY

WIRING DIAGRAM

PARTS LIST

2

Power Requirements

230 - 240 Volts
50 Hertz

Single phase, 3 wire grounded

Power Consumption

2.7 kW Approx. 13A

Power Output

1700 watts nominal of RF microwave energy (Method of IEC 705)
Operating frequency of 2450MHz

Outside Dimensions

Width 510mm

Height 335 mm
Depth 470 mm

Cooking Cavity Dimensions

Width 330 mm
Height 180 mm
Depth 330 mm

Control Complement

Electronic Timer (0 -30 minutes)

Microwave Power level
100% 50% 20% 10%

MICROWAVE POWER SETTING buttons

START button

Set Weight

Approx. 33kg

THE WIRES IN THIS MAINS LEAD ARE COLOURED IN ACCORDANCE WITH THE FOLLOWING CODE:

GREEN-AND-YELLOW

: EARTH

BLUE

: NEUTRAL

BROWN

: LIVE