DOWNLOAD Sharp R-210AM Service Manual ↓ Size: 205.96 KB | Pages: 16 in PDF or view online for FREE

Model
R-210AM
Pages
16
Size
205.96 KB
Type
PDF
Document
Service Manual
Brand
Device
Home Appliance / Microwave Oven / Complete
File
r-210am.pdf
Date

Sharp R-210AM Service Manual ▷ View online

210AM - 1
S3768R210AM//
R
SHARP CORPORATION
SERVICE MANUAL
TABLE OF CONTENTS
Page
SERVICING .......................................................................................................................................  2
CAUTION, MICROWAVE RADIATION .............................................................................................  3
WARNING .........................................................................................................................................  3
PRODUCT DESCRIPTION ...............................................................................................................  3
OPERATION DATA ...........................................................................................................................  4
DOOR SWITCHES ............................................................................................................................  4
OUTPUT POWER TEST PROCEDURE ...........................................................................................  5
COMPONENT REPLACEMENT .......................................................................................................  5
SCHEMATIC DIAGRAM ...................................................................................................................  7
WIRING DIAGRAM ...........................................................................................................................  8
PARTS LIST ......................................................................................................................................  9
EXPLODED ILLUSTRATION ............................................................................................................  11
NEW FEATURE ................................................................................................................................  14
In  the interests of user-safety the oven should be restored
to its original condition and only parts identical to those
specified should be used.
MICROWAVE OVEN
    
MODEL
R-210AM
LOW
MED LOW
MED
MED HIGH
HIGH
COOKING CONTROL
WITH COOK & DEFROST GUIDE
TIMER
5
30
20
10
15
25
2.0
1.0
1.5
0
COOK & DEFROST
GUIDE (KG)
0.5
E
800W
210AM - 2
Microwave ovens should not be used without a load.   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) minute, set the
power level to HIGH (100%) and push the start key. When the one (1) minute has elapsed (timer at zero) carefully check
that the water is now hot.
AFTER REPAIR REMEMBER TO CHECK 4R
1) Reconnect all leads removed from components during testing.
2) Replace the outer case (cabinet).
3) Reconnect the supply.
4) Run the oven. Check all functions.
When all service work is completed, and the oven is fully assembled, the microwave power output should be checked
and microwave leakage test carried out.
IMPORTANT:
If the oven becomes inoperative because of a blown fuse F8A in the 1st latch switch - monitor switch
circuit, check the 1st latch switch and monitor switch before replacing the fuse F8A.
Sharp recommend that wherever possible, fault-finding is carried out with the supply disconnected.  In some
cases, it may be necessary to connect the supply with  the cover removed to carry out fault investigation in the
control circuitry.  In such cases, the high voltage circuit should be disabled as described below to reduce the
hazards:-
Carry out 3D checks (see above).
Disconnect the supply leads from the high voltage transformer, making a note of the polarity.  Insulate the
connectors, ensuring they are positioned away from the transformer and fastened there.
Connect any relevant test equipment e.g. voltmeter.
Reconnect the oven to the supply, then close the door.
Note the results of the test, taking care to keep clear of the operational oven.
Carry out 3D checks (see above).
Reconnect the leads to the transformer.  Take care to observe correct polarity.
Carry out 4R checks (see below).
 WARNING TO SERVICE PERSONNEL
SERVICING
Microwave ovens contain circuitry capable of producing very high voltage and current. Contact with following parts
will result in electrocution:-
High voltage capacitor, High voltage transformer, Magnetron, High voltage rectifier, High voltage harness.
REMEMBER TO CHECK 3D
1) Disconnect the supply.
2) Door opened, and wedged open.
3) Discharge high voltage capacitor.
WARNING AGAINST THE CHARGE OF THE HIGH-VOLTAGE CAPACITOR
The high-voltage capacitor remains charged about 60 seconds after the oven has been switched off. Wait for 60
seconds and then short-circuit the connection of the high-voltage capacitor (that is, of the connecting lead of the
high-voltage rectifier) against the chassis using a screwdriver with an insulated handle.
210AM - 3
WARNING
Servicing and repair work must be carried out only by
trained service engineers.
The parts marked '*' on the parts list and schematic
diagram have voltages in excess of 250V.
Removal of the outer wrap gives access to potential
above 250V.
All the parts marked "
" on the parts list may cause
undue microwave exposure, by themselves, or when
they are damaged, loosened or removed.
CAUTION
MICROWAVE RADIATION
Do not become exposed to radiation from the
magnetron or other parts conducting microwave en-
ergy.  All input and output microwave connections,
waveguides, flanges and gaskets must be secured.
Never operate the device without a microwave en-
ergy absorbing load attached. Never look into an
open waveguide or antenna while the device is ener-
gized.
SPECIFICATION
Power Requirements
230 /240 Volts     50 Hertz     Single phase, 3 wire grounded
Power Consumption
1.3KW
Power Output
800 watts nominal of RF microwave energy (measured by way of IEC 705)
Operating frequency of 2450 MHz
Case Dimensions
Width 449 mm     Height 282 mm including foot     Depth 369 mm
Cooking Cavity Dimensions
Width 290 mm     Height 194 mm     Depth 313 mm
Turntable diameter
272 mm
Control Complement
Mechanical Control System
Microwave Power for Variable Cooking
     Repetition Rate :
    
HIGH ..................... Full power throughout the cooking time
   
 
MEDIUM HIGH ..... approx. 70% of Full Power
   
 
MEDIUM ............... approx. 50% of Full Power
    
MEDIUM LOW ...... approx. 30% of Full Power
    
LOW ..................... approx. 10% of Full Power
Set Weight
Approx. 13.3 kg
 
  PRODUCT DESCRIPTION
CAUTION / WARNING
WARNING
THIS APPLIANCE MUST BE EARTHED
THE WIRES IN THIS MAINS LEAD ARE COLOURED IN
ACCORDANCE WITH THE FOLLOWING CODE:
GREEN-AND-YELLOW : EARTH        BLUE : NEUTRAL        BROWN : LIVE
If the mains lead is replaced, only part number QACCBA030WREO should be used
210AM - 4
OFF CONDITION
Closing the door activates all door interlock switches (moni-
tored latch switch and latch switch).
IMPORTANT
When the timer knob is at "0" the oven is in the OFF
condition.
Approx. 10% = 80 Watts
26 sec. ON
4 sec. ON
8 sec. ON
14 sec. ON
20 sec. ON
22 sec. OFF
18 sec. OFF
12 sec. OFF
6 sec. OFF
LOW
MEDIUM HIGH
MEDIUM
MEDIUM LOW
HIGH
Approx. 70% = 560 Watts
Approx. 50% = 400 Watts
Approx. 30% = 240 Watts
Approx. 100% = 800 Watts
HIGH, MEDIUM HIGH, MEDIUM, MEDIUM
LOW, LOW COOKING
When the microwave oven is preset for variable cooking
power, the line voltage is supplied to the power transformer
intermittently within a 32-second time base through the
relay contact which is coupled with the current-limiting relay
(RY2). The following levels of microwave power are given.
SETTING
NOTE: The ON/OFF time ratio does not exactly correspond
to the percentage of microwave power, because
approx. 3 seconds are needed for heating up the
magnetron filament.
DOOR OPEN MECHANISM
Figure D-1. Door Open Mechanism
MONITORED LATCH SWITCH (SW1)
STOP SWITCH (SW3)
1. When the oven door is closed, the contacts (COM - NO)
must be closed.
2. When the oven door is opened, the contacts (COM -
NO) must be opened.
MONITOR SWITCH (SW2)
1. When the oven door is closed, the contacts (COM - NC)
must be opened.
2. When the oven door is opened,  the contacts (COM -
NC) must be closed.
3. If the oven door is opened and the contacts (COM - NO)
of the monitored latch switch (SW1) fail to open, the fuse
F8A blows simultaneously with closing the contacts
(COM - NC) of the monitor switch (SW2).
CAUTION: BEFORE REPLACING A BLOWN FUSE (F)
F8A TEST THE MONITORED LATCH SWITCH
(SW1), + MONITOR SWITCH (SW3) FOR
PROPER OPERATION.
OPERATING SEQUENCE
DOOR SWITCHES
LATCH HOOK
SW2: LATCH 
SWITCH
SW1: MONITORED
LATCH SWITCH
SW3:  MONITOR 
SWITCH
LATCH
HEADS
OPEN LEVER
DOOR OPEN BUTTON
DOOR
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  • DOWNLOAD Sharp R-210AM Service Manual ↓ Size: 205.96 KB | Pages: 16 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Sharp R-210AM in PDF for free, which will help you to disassemble, recover, fix and repair Sharp R-210AM Microwave Oven. Information contained in Sharp R-210AM 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.