Sharp R-24AT Service Manual

R-22AT
R-24AT
5
NOTE: The ON/OFF time ratio does not exactly corre-
spond to the percentage of microwave power,
because approx. 3 seconds are needed for heat-
ing up the magnetron filament.
TWO MAGNETRON OPERATION SYSTEM
Two magnetrons MG1+MG2 are equipped in order to get
higher microwave power output. The primary windings of
the high voltage transformers T1+T2 are connected so
that each magnetron can be oscillated alternatively ac-
cording to the frequency of the power supply. Refer to the
Figure B-1 and B-2.
Figure B-1. High Voltage Circuit
Figure B-2. Operation of Magnetron
48 sec. ON
Number key
44sec. ON
Number key 9
40 sec. ON
Number key 8
36 sec. ON
Number key 7
32 sec. ON
Number key 6
26 sec. ON
Number key 5
22 sec. ON
Number key 4
16 sec. ON
Number key 3
12 sec. ON
Number key 2
8 sec. ON
Number key 1
0 sec. ON
Number key 0
T1: HIGH VOLTAGE
TRANSFORMER
H. V. RECTIFIER
C1: H.V. CAPACITOR
MG1: MAGNETRON (UPPER)
(REAR)
H. V. RECTIFIER
H. V. FUSE H. V. FUSE
C2: H.V. CAPACITOR
MG2: MAGNETRON (LOWER)
T2: HIGH VOLTAGE
TRANSFORMER
(FRONT)
COMMERCIAL
FREQUENCY
(50HZ)
POWER OUTPUT
BY MAGNETRON T1
POWER OUTPUT
BY MAGNETRON T2
OPERATION OF
MAGNETRON

Sharp R-24AT Specifications

General

Turntable	-
Clock type	Electronic
Door hinge	Left
Control type	Buttons
Product color	Stainless steel
Door open type	Pull-out
Microwave power	1900 W
Built-in display	Yes
Appliance placement	Countertop
Number of power levels	11
Auto programs quantity	10
Current	13 A
Connected load	2900 W
AC input voltage	230 V
AC input frequency	50 Hz

Weight and Dimensions

Depth	470 mm
Width	510 mm
Height	335 mm
Weight	33000 g
Interior dimensions (W x D x H)	330 x 330 x 180 mm