Read Sharp R-2277 Service Manual online
SHARP CORPORATION
R-2277
R-2287
R-2287
SERVICE MANUAL
TABLE OF CONTENTS
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
CONTROL PANEL ASSEMBLY ................................................................................................................ 18
COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE ..................................................... 23
MICROWAVE MEASUREMENT .............................................................................................................. 28
TEST DATA AT A GLANCE ..................................................................................................................... 29
WIRING DIAGRAM ................................................................................................................................... 30
PICTORIAL DIAGRAM ............................................................................................................................. 31
CONTROL PANEL CIRCUIT ..................................................................................................................... 32
PRINTED WIRING BOARD ....................................................................................................................... 34
PARTS LIST ............................................................................................................................................. 35
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
CONTROL PANEL ASSEMBLY ................................................................................................................ 18
COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE ..................................................... 23
MICROWAVE MEASUREMENT .............................................................................................................. 28
TEST DATA AT A GLANCE ..................................................................................................................... 29
WIRING DIAGRAM ................................................................................................................................... 30
PICTORIAL DIAGRAM ............................................................................................................................. 31
CONTROL PANEL CIRCUIT ..................................................................................................................... 32
PRINTED WIRING BOARD ....................................................................................................................... 34
PARTS LIST ............................................................................................................................................. 35
S5504R2277H//
In interests of user-safety the oven should be restored to its original
condition and only parts identical to those specified should be used.
condition and only parts identical to those specified should be used.
COMMERCIAL
MICROWAVE OVEN
MODEL
R-2277
R-2287
R-2287
R-2277
R-2287
R-2287
CAUTION
MICROWAVE RADIATION
Personnel 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.
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.
VARNING
MICKROVAGSSTRALING
Personal får inte utsättas för mikrovågsenergi som kan ustrala från magnetronen eller
andre mikrovågsalstrande anordningar om dessa är felanslutna eller används på fel sätt.
Alla in-och utgångsanslutningar för mikrovågor, vagledare, flänsar och packningar måste
vara fast anslutna.
Mikrovågsgeneratorn får inte arbeta utan att absorberande belastning är ansluten. Titta
aldrig in i ën öppen vågledare eller antenn när mikrovågsgeneratorn är påkopplad eller
laddad.
andre mikrovågsalstrande anordningar om dessa är felanslutna eller används på fel sätt.
Alla in-och utgångsanslutningar för mikrovågor, vagledare, flänsar och packningar måste
vara fast anslutna.
Mikrovågsgeneratorn får inte arbeta utan att absorberande belastning är ansluten. Titta
aldrig in i ën öppen vågledare eller antenn när mikrovågsgeneratorn är påkopplad eller
laddad.
VAROITUS
MIKROAALTOSÄTELYÄ
Käyttäjä ei saa joutua alttiiksi mikroaaltoenergialle, jota voi säteillä magnetronista tai
muusta mikroaaltoja kehittävästä laitteesta, jos sitä käytetään tai jos se kytketään väärin.
Kaikkien mikroaaltoliitäntöjen sekä syöttö-että ulostulopuolella, aaltoputkien laippojen ja
tiivisteiden tulee olla varmistettuja.
Mikroaaltouunnia ei koskaan saa käyttää ilman kuormaa jossa mikroaaltoenergiaa kuluu.
Avoimeen aaltoputkeen tai antenniin ei koskaan saa katsoa virran ollessa kytkettynä.
muusta mikroaaltoja kehittävästä laitteesta, jos sitä käytetään tai jos se kytketään väärin.
Kaikkien mikroaaltoliitäntöjen sekä syöttö-että ulostulopuolella, aaltoputkien laippojen ja
tiivisteiden tulee olla varmistettuja.
Mikroaaltouunnia ei koskaan saa käyttää ilman kuormaa jossa mikroaaltoenergiaa kuluu.
Avoimeen aaltoputkeen tai antenniin ei koskaan saa katsoa virran ollessa kytkettynä.
ADVARSEL
MIKROBØLGESTRÅLING
Personell må ikke utsettes for mikrobølge-energi som kan utståles fra magnetronen eller
andre mikrobølge-generende deler dersom apparatet feilbetjenes eller blir feiltikoplet.
Alle inn-og ut-tilkoplinger i forbindelse med mikrobølge-strålingen, bølgeledere, flenser og
tetningsringer/pakninger må festes ordentlig.
Aldri bruk apparatet med mindre en mikrobålge-absorberende last er plassert i
ovnsrommet.
Aldri se direkte inn i en åpen bølgeleder eller antenne imens apparatet er strømførende.
andre mikrobølge-generende deler dersom apparatet feilbetjenes eller blir feiltikoplet.
Alle inn-og ut-tilkoplinger i forbindelse med mikrobølge-strålingen, bølgeledere, flenser og
tetningsringer/pakninger må festes ordentlig.
Aldri bruk apparatet med mindre en mikrobålge-absorberende last er plassert i
ovnsrommet.
Aldri se direkte inn i en åpen bølgeleder eller antenne imens apparatet er strømførende.
ADVARSEL
MIKROBØLGEBESTRÄLING
Man bør ikke udsætte sig for mikrobølgebestråling fra magnetronen eller andre
mikrobølgefrembringende anordninger, hvilket kan ske hvis apparatet er forkert tilsluttet
eller bruges forkert. Alle mikrobølgeindgange og-udgange, bølgeledere, flanger og
tætningsstrimler må være forsvarligt udført.
Anvend aldrig ovnen uden en mikrobølgesabsorberende anordning. Se aldrig ind i en
åben bølgeleder eller antenne, mens ovnen er i brug.
mikrobølgefrembringende anordninger, hvilket kan ske hvis apparatet er forkert tilsluttet
eller bruges forkert. Alle mikrobølgeindgange og-udgange, bølgeledere, flanger og
tætningsstrimler må være forsvarligt udført.
Anvend aldrig ovnen uden en mikrobølgesabsorberende anordning. Se aldrig ind i en
åben bølgeleder eller antenne, mens ovnen er i brug.
1
R-2277
R-2287
R-2287
SHARP CORPORATION
OSAKA, JAPAN
WARNING
Never operate the oven until the following points are ensured.
(A) The door is tightly closed.
(B) The door latches and hinges are not defective.
(C) The door is not deformed or warped.
(D) There is not any other visible damage with the oven.
(A) The door is tightly closed.
(B) The door latches and hinges are not defective.
(C) The door is not deformed or warped.
(D) There is not any other visible damage with the oven.
Servicing and repair work must be carried out only by trained
service engineers.
service engineers.
Removal of the outer wrap gives occess to potentials above 250V.
All the parts marked "
∆
" on the parts list may cause undue
microwave exposure, by themselves, or when they are dam-
aged, loosened or removed.
aged, loosened or removed.
WARNING
Note:
The parts marked "*" are used in voltage more
than 250V. (Parts List)
than 250V. (Parts List)
Anm:
Delar märket med "*" har en spänning
överstigande 250V.
överstigande 250V.
Huom:
Huolto-ohjeeseen merkitty "tähdella" osat
joissa jännite on yli 250 V.
joissa jännite on yli 250 V.
Bemerk:
Deler som er merket "asterisk" er utsatt for
spenninger over 250V til jord.
spenninger over 250V til jord.
Bemærk:
"Dele mærket med stjerne benyttes med højere
spænding end 250 volt.
spænding end 250 volt.
CAUTION
MICROWAVE RADIATION
DO NOT BECOME EXPOSED TO RADIATION FROM THE
MICROWAVE GENERATOR OR OTHER PARTS
CONDUCTING MICROWAVE ENERGY.
MICROWAVE GENERATOR OR OTHER PARTS
CONDUCTING MICROWAVE ENERGY.
SERVICE MANUAL
COMMERCIAL
MICROWAVE OVEN
R-2277 / R-2287
GENERAL IMPORTANT INFORMATION
This Manual has been prepared to provide Sharp Corp. Service
engineers with Operation and Service Information.
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.
text of this manual, so they will be qualified to render satisfactory
customer service.
PRODUCT SPECIFICATIONS
FUNCTION OF IMPORTANT
COMPONENTS
COMPONENTS
SERVICING AND
TROUBLESHOOTING CHART
TROUBLESHOOTING CHART
TEST PROCEDURE
APPEARANCE VIEW
OPERATING SEQUENCE
GENERAL INFORMATION
MICROWAVE MEASUREMENT
TEST DATA AT A GLANCE
WIRING DIAGRAM
PARTS LIST
COMPONENT
REPLACEMENT AND
ADJUSTMENT PROCEDURE
REPLACEMENT AND
ADJUSTMENT PROCEDURE
CONTROL PANEL ASSEMBLY
2
R-2277
R-2287
R-2287
PRODUCT DESCRIPTION
SPECIFICATION
ITEM
DESCRIPTION
Power Requirements
230 Volts
50 Hertz
50 Hertz
Single phase, 3 wire grounded
Power Consumption
2.7 kW Approx. 13A (R-2287) / 2.0kW 9A for R-2277
Power Output
1700 watts (R-2287) /1200 watts (R-2277) nominal of RF microwave energy
(Method of IEC 705)
Operating frequency of 2450MHz
(Method of IEC 705)
Operating frequency of 2450MHz
Outside Dimensions
Width 510mm
Height 335 mm
Depth 470 mm
Depth 470 mm
Cooking Cavity Dimensions
Width 330 mm
Height 180 mm
Depth 330 mm
Height 180 mm
Depth 330 mm
Control Complement
Electronic timer (0 - 30 min.)
Microwave Power level
100% 50% 20% 10%
100% 50% 20% 10%
MICROWAVE POWER SETTING button
START button
Set Weight
Approx. 33kg (R-2287) / Approx. 31kg R-2277)
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