DOWNLOAD Sharp R-23AM (serv.man3) Service Manual ↓ Size: 1.03 MB | Pages: 45 in PDF or view online for FREE

Model
R-23AM (serv.man3)
Pages
45
Size
1.03 MB
Type
PDF
Document
Service Manual
Brand
Device
Home Appliance / Microwave Oven
File
r-23am-sm3.pdf
Date

Sharp R-23AM (serv.man3) Service Manual ▷ View online

R - 2 2 A T
R-23AM
R - 2 4 A T
SHARP CORPORATION
  SERVICE MANUAL
SX910R24ATK//
COMMERCIAL
MICROWAVE OVEN
MODELS
R-22AT
R-23AM
R-24AT
In interests of user-safety the oven should be restored to its
original condition and only parts identical to those specified
should be used.
TABLE OF CONTENTS
Page
SERVICING ................................................................................................................. INSIDE FRONT COVER
CAUTION, MICROWAVE RADIATION .............................................................................................................  1
WARNING .......................................................................................................................................................... 1
PRODUCT SPECIFICATIONS .........................................................................................................................  2
GENERAL INFORMATION ................................................................................................................................ 2
APPEARANCE VIEW .......................................................................................................................................  3
OPERATION SEQUENCE ................................................................................................................................  4
FUNCTION OF IMPORTANT COMPONENTS ................................................................................................  6
TROUBLESHOOTING GUIDE .......................................................................................................................... 7
TEST PROCEDURE .........................................................................................................................................  9
TOUCH CONTROL PANEL ASSEMBLY ........................................................................................................ 18
COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE ...........................................................  28
MICROWAVE MEASUREMENT ....................................................................................................................  35
WIRING DIAGRAM .........................................................................................................................................  36
PICTORIAL DIAGRAM ...................................................................................................................................  38
CONTROL PANEL CIRCUIT ........................................................................................................................... 39
PRINTED WIRING BOARD ............................................................................................................................. 42
PARTS LIST ...................................................................................................................................................  44
1900W/R-24AT
1
2
3
4
5
6
7
8
9
0
11
12
13
14
15
16
17
18
19
20
EXPRESS
DEFROST
MANUAL/
REHEAT
STOP / CLEAR
POWER LEVEL
START
SET
CHECK
VOLUME
DOUBLE
QUANTITY
R-24AT
R - 2 2 A T
R-23AM
R - 2 4 A T
REMEMBER TO CHECK 3D
1) Disconnect the supply.
2) Door opened, and wedged open.
3) Discharge high two voltage capacitors.
WARNING: AGAINST THE CHARGE OF THE TWO
HIGH-VOLTAGE CAPACITORS.
The two high-voltage capacitors remain charged
about 60 seconds after the oven has been switched
off. Wait for 60 seconds and then short-circuit the
connection of the two high-voltage capacitors (that
is, of the connecting lead of the high-voltage recti-
fier) against the chassis with use of an insulated
screwdriver.
Sharp recommend that wherever possible fault-finding
is carried out with the supply disconnected. It may, in
some cases, be necessary to connect the supply after
the outer case has been removed, in this event carry out
3D checks and then disconnect the leads to the primary
of the power transformer. Ensure that these leads re-
main isolated from other components and the oven
chassis. (Use insulation tape if necessary.) When the
testing is completed carry out 3D checks and reconnect
the leads to the primary of the power transformer.
SERVICING
 WARNING TO SERVICE PERSONNEL
Microwave ovens contain circuitry capable of producing very high voltage and current. Contact with following parts
will result in electrocution.
High voltage capacitors, High voltage transformers, Magnetrons, High voltage rectifier assembly, High voltage
fuses, High voltage harness.
 REMEMBER TO CHECK 4R
1) Reconnect all leads removed from components dur-
ing testing.
2) Replace the outer case (cabinet).
3) Reconnect the supply.
4) Run the oven. Check all functions.
Microwave ovens should not be run empty. To test for
the presence of microwave energy within a cavity, place
a cup of cold water on the oven turntable, close the door
and set  the microwave timer for one (1) minut. When the
one minute has elapsed (timer at zero) carefully check
that the water is now hot. If the water remains cold carry
out  3D checks and re-examine the connections to the
component being tested.
When all service work is completed and the oven is fully
assembled, the microwave power output should be
checked and microwave leakage test should be carried
out.
1800W/R-23AM
START
HIGH
MEDIUM
MED LOW
DEFROST
TIME 
CONTROL
R-23AM
1
R - 2 2 A T
R-23AM
R - 2 4 A T
SERVICE MANUAL
COMMERCIAL
MICROWAVE OVEN
  R-22AT/ R-23AM/ R-24AT
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 entire text
of this manual, so they will be qualified to render satisfactory customer
service.
CAUTION
MICROWAVE RADIATION
Service engineers should not be exposed to the microwave
energy which may radiate from the magnetron or other micro-
wave 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.
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
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 damaged, loosened or
removed.
SHARP CORPORATION
OSAKA, JAPAN
PRODUCT SPECIFICATIONS
GENERAL INFORMATION
APPEARANCE VIEW
OPERATING SEQUENCE
FUNCTION OF IMPORTANT
COMPONENTS
SERVICING AND
TROUBLESHOOTING GUIDE
TEST PROCEDURE
TOUCH CONTROL PANEL
COMPONENT REPLACEMENT
AND ADJUSTMENT PROCEDURE
MICROWAVE MEASUREMENT
WIRING DIAGRAM
PARTS LIST
2
R - 2 2 A T
R-23AM
R - 2 4 A T
GENERAL INFORMATION
WARNING
THIS APPLIANCE MUST BE EARTHED
IMPORTANT
THE WIRES IN THIS MAINS LEAD ARE COLOURED IN ACCORDANCE WITH THE FOLLOWING CODE:
GREEN-AND-YELLOW
: EARTH
BLUE
: NEUTRAL
BROWN
: LIVE
PRODUCT DESCRIPTION
SPECIFICATION
ITEM
DESCRIPTION
Power Requirements
230 - 240 Volts
50 Hertz
Single phase, 3 wire earthed
Power Comsumption
2.4 kW Approx. 11 A [R-22AT] / 2.9 kW Approx. 13 A [R-23AM, R-24AT]
Power Output
1500 W [R-22AT]/ 1900 W [R-23AM/24AT] nominal of RF microwave energy
(measured by method of IEC 60705) Operating frequency 2450 MHz
Case Dimensions
Width
Height
Depth
510mm
335 mm
470mm
Cooking Cavity Dimensions
Width
Height
Depth
330 mm
180 mm
330mm
Control Complement for R-22AT/24AT
Touch Control System
The combination of cooking time and microwave power
The oven can be programmed a series of up to 3 cookling stages.
The combination of microwave power and cooking time that can be input as
folllows.
Cooking Sequence  Micrwave power levelthat can be iused.  Cooking time that can be iused.
1 Stage only
0-100%
Max. 30 minutes
0-40% all stages
Max. 30 minutes any stages
Max. 60 minutes for 2 stages
2 or 3 Stage
Max. 90 minutes for 3 stages
50-100%
Max. 30 minutes for 3 stages
NOTE:If the oven used with the power level above 40% on any stage, the
maximum cooking time is 30 minutes in total.
Microwave Power level
100% 90% 80% 70% 60% 50% 40% 30% 20% 10% 0%
MANUAL / REPEAT key, NUMBER keys
POWER LEVEL key, STOP / CLEAR key
START Key, DOUBLE QUANTITY key
EXPRESS DEFROST key, SET key
CHECK key, VOLUME key
Control Complement for R-23AM
Electronic Timer (0 - 30 minutes)
Microwave Power level
100%  50% 20% 10%
MICROWAVE POWER SETTING buttons
START button
Set Weight
Approx. 33 kg
Page of 45
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Sharp R-23AM (serv.man3) Service Manual ▷ Download

  • DOWNLOAD Sharp R-23AM (serv.man3) Service Manual ↓ Size: 1.03 MB | Pages: 45 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Sharp R-23AM (serv.man3) in PDF for free, which will help you to disassemble, recover, fix and repair Sharp R-23AM (serv.man3) Microwave Oven. Information contained in Sharp R-23AM (serv.man3) Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.