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R-21HT-F
R-21JV-F

33

6

4

5

1

2

3

6

4

5

1

2

3

A

B

C

D

E

F

G

H

A

B

C

D

E

F

G

H

Figure S-1. Pictorial Diagram

GRY

ORG

THERMAL

CUT-OUT

125˚C(OVEN)

OVEN LAMP

& SOCKET

THERMAL

CUT-OUT

145°C(MAG.)

FAN MOTOR

WHT

YLW

WHT

RED

WHT

HIGH VOLTAGE COMPONENTS

MAGNETRON

H.V.

CAPACITOR

H.V.

RECTIFIER

POWER TRANSFORMER

GRN

POWER SUPPLY CORD

NOISE FILTER

FUSE

COM

WHT

WHT

RED

WHT

WHT

N.C.

N.O.

COM.

CONNECTOR

ORG

ORG

WHT

BRN

BLU

ANTENNA

MOTOR

MONITOR

SWITCH

WHT

GRY

RED

RED

YLW

YLW

ORG

YLW

BLU

BLU

IC1

RY2

T1

RY3

CN-G

CN-A

7

1

1

2

CN-B

2

3

4

5

1

BLU

GRY

CN-A

NEUTRAL

HOT

EARTH

RED

BLK

GRN

GRY

N.O.

COM.

DOOR SENSING SWITCH

SECONDARY

INTERLOCK

SWITCH

CONTROL UNIT

2

1

GRN

G R N

G R N

GRY

CN-B

NOTE:

Hot (GRY) wire must be

connected to the terminal

with blue mark on the

oven light socket.

BLUE MARK

BRN

RED

L

N

WHT

RED

WHT

WHT

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Содержание R-21HT-F

Страница 1: ...OSURE TO EXCESSIVE MICROWAVE ENERGY INSIDE FRONT COVER BEFORE SERVICING INSIDE FRONT COVER WARNING TO SERVICE PERSONNEL 1 MICROWAVE MEASUREMENT PROCEDURE 2 FOREWORD AND WARNING 3 PRODUCT SPECIFICATIONS 4 GENERAL INFORMATION 4 OPERATION 6 TROUBLESHOOTING GUIDE 9 TEST PROCEDURE 10 TOUCH CONTROL PANEL 18 COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE 26 PICTORIAL DIAGRAM 33 CONTROL PANEL CIRCUIT 34 P...

Страница 2: ...transmission systems shall be repaired replaced or adjusted by procedures described in this manual before the oven is released to the owner e A microwave leakage check to verify compliance with the Federal Performance Standard should be performed on each oven prior to release oven to the owner BEFORE SERVICING Before servicing an operative unit perform a microwave emission check as per the Microwa...

Страница 3: ...e capacitor 4 Disconnect the leads to the primary of the power transformer 5 Ensure that the leads remain isolated from other components and oven chassis by using insulation tape 6 After that procedure reconnect the power supply cord When the testing is completed 1 Disconnect the power supply cord and then remove outer case 2 Open the door and block it open 3 Discharge high voltage capacitor 4 Rec...

Страница 4: ...of the oven cavity The water container shall be a low form of 600 ml 20 oz beaker with an inside diameter of approx 8 5 cm 3 1 2 in and made of an electrically nonconductive material such as glass or plastic The placing of this standard load in the oven is important not only to protect the oven but also to insure that any leakage is measured accurately 4 Set the cooking control on Full Power Cooki...

Страница 5: ... door packing is not damaged D The door is not deformed or warped E There is no other visible damage with the oven Servicing and repair work must be carried out only by trained service personnel DANGER Certain initial parts are intentionally not grounded and present a risk of electrical shock only during servicing Service person nel Do not contact the following parts while the appliance is energiz...

Страница 6: ...pprox 10 of Full Power P 0 No power throughout the cooking time DOUBLE QUANTITY pad EXPRESS DEFROST pad Ten number pads SELECTATIME pad STOP CLEAR pad SELECTAPOWER pad R 21HT F only START pad SET pad CHECK pad SIGNAL pad Oven Cavity Light Yes Safety Standard UL Listed FCC Authorized DHHS Rules CFR Title 21 Chapter 1 Subchapter J NSF certified SPECIFICATION GENERAL INFORMATION GROUNDING INSTRUCTION...

Страница 7: ...personal responsibility and obligation of the customer to contact a qualified electrician and have it replaced with a properly grounded three pronged wall receptacle or have a grounding adapter properly grounded and polarized If the extension cord must be used it should be a 3 wire 15 amp or higher rated cord Do not drape over a countertop or table where it can be pulled on by children or tripped ...

Страница 8: ...n and the digital read out displays the time still remaining in the cook cycle when the door was opened 7 The monitor switch electrically monitors the operation of the secondary interlock switch and control relay RY3 and is mechanically associated with the door so that it will function in the following sequence 1 When the door opens from the closed position the primary interlock relay RY2 and seco...

Страница 9: ...FILTER N L AC120V 60 Hz POWER TRANSFORMER CAPACITOR 0 94 µF 2400V DOOR SENSING SWITCH SECONDARY INTERLOCK SWITCH CONTROL UNIT THERMAL CUT OUT 125 C OVEN THERMAL CUT OUT 145 C MAG PRIMARY INTERLOCK RELAY CONTROL RELAY MONITOR SWITCH MAGNETRON RECTIFIER RY3 RY2 A3 A7 B1 B2 OL FM AM OVEN LAMP FAN MOTOR ANTENNA MOTOR FUSE LINE CROSS CAPACITOR 0 22 F AC250V NOISE SUPPRESSION COIL LINE BYPASS CAPACITOR ...

Страница 10: ...ver A Latch Switch Lever B Latch Switch Lever C Latch Head Latch Head Handle Lever Door Handle Latch Lever Secondary Interlock Switch Monitor Switch Door Sensing Switch monitor fuse blows simultaneously with closing of the monitor switch contacts CAUTION BEFORE REPLACING A BLOWN MONITOR FUSE TEST THE DOOR SENSING SWITCH PRIMARY INTERLOCK RELAY RY2 RELAY RY3 SECONDARY INTERLOCK SWITCH AND MONITOR S...

Страница 11: ...BA015WRK0 as an assembly IMPORTANT Whenever troubleshooting is performed with the power supply cord disconnected It may in some cases be necessary to connect the power supply cord after the outer case has been removed in this event 1 Disconnect the power supply cord and then remove outer case 2 Open the door and block it open 3 Discharge high voltage capacitor 4 Disconnect the leads to the primary...

Страница 12: ... load Food incompletely cooked or not cooked at all at end of cook cycle Oven goes into a cook cycle but extremely uneven heating is produced in oven load food Oven does not cook properly when programmed for Cooking Power 5 mode Operates properly on Cooking Power 10 HIGH mode EE9 Maximum time is exceeded OFF CONDITION COOKING CONDITION ERROR MODE MAGNETRON POWER TRANSFORMER H V RECTIFIER ASSEMBLY ...

Страница 13: ...e of the water 2 Place the cup of water in the oven Operate oven at POWER 10 HIGH selecting more than 60 seconds cook time Allow the water to heat for 60 seconds measuring with a stop watch second hand of a watch or the digital read out countdown 3 Remove the cup from the oven and again measure the temperature making sure to stir the thermometer or thermocouple through the water until the maximum ...

Страница 14: ...om components during testing 6 Reinstall the outer case cabinet 7 Reconnect the power supply cord after the outer case is installed 8 Run the oven and check all functions E THERMAL CUT OUT TEST 125 C OVEN 1 Disconnect the power supply cord and then remove outer case 2 Open the door and block it open 3 Discharge high voltage capacitor 4 A continuity check across the thermal cut out terminals should...

Страница 15: ...pen the door and block it open 3 Discharge high voltage capacitor 4 Disconnect two 2 wire leads from the male tab terminals of the Primary Interlock Relay Check the state of the relay contacts using a ohmmeter The relay contacts should be open If the relay contacts are closed replace the circuit board entirely or the relay itself 5 Reconnect all leads removed from components during testing 6 Reins...

Страница 16: ... SECONDARY INTERLOCK SWITCH DOOR SENSING SWITCH AND MONITOR SWITCH FOR PROPER OPERATION If the monitor fuse is blown by improper switch operation the monitor fuse and monitor switch must be replaced with monitor fuse and monitor switch assembly part number FFS BA015WRK0 even if the monitor switch operates normally The monitor fuse and monitor switch assembly is comprised of a 20 ampere fuse and sw...

Страница 17: ...certain group of pads do not produce a signal b When touching the pads no pads produce a signal 2 2 In connection with indicators a At a certain digit all or some segments do not light up b At a certain digit brightness is low c Only one indicator does not light d The corresponding segments of all digits do not light up or they continue to light up e Wrong figure appears f A certain group of indic...

Страница 18: ... connect the power supply cord 7 Remove the outer case and check voltage between Pin Numbers 3 and 7 of the connector A on the control unit with an A C voltmeter The meter should indicate 120 volts if not check oven circuit RY2 and RY3 Relay Test These relays are operated by D C voltage Check voltage at the relay coil with a D C voltmeter during the microwave cooking operation DC voltage indicated...

Страница 19: ...et 8 Reconnect the power supply cord after the outer case is installed 9 Run the oven and check all functions 2 Follow the troubleshooting guide given below if indicator does not light up after above check and repairs are finished 1 Disconnect the power supply cord and then remove outer case 2 Open the door and block it open 3 Discharge high voltage capacitor 4 Disconnect the leads to the primary ...

Страница 20: ...low 1 Control Unit Signal of key touch and oven function control are all processed by one microcomputer 1 Power Supply Circuit This circuit changes output voltage at the secondary side of the low voltage T1 transformer to voltages required at each part by full wave rectifying circuit constant voltage circuit etc 2 ACL Circuit This is an Auto clear Circuit i e a reset circuit which enables IC1 to b...

Страница 21: ...2sec 30 12sec 20sec 80 26sec 6sec 20 8sec 24sec 70 24sec 8sec 10 6sec 26sec 60 22sec 10sec 0 0sec 32sec 50 18sec 14sec 14 15 P54 P53 OUT Terminal not used 16 18 P52 P50 IN Terminal not used 19 P47 OUT Signal to sound buzzer This signal is to control the 2 5kHz continuous signal through IC3 A key touch sound B Guidance sound C Completion sound 20 P46 OUT Oven lamp Fan motor and Antenna motor drivin...

Страница 22: ...ponding signal out of P30 P31 P32 P33 P34 will be input into P27 When no key is touched the signal is held at L level 34 P26 IN Signal similar to P27 When either one of G 11 line keys on key matrix is touched a corresponding signal will be input into P26 35 P25 IN Signal similar to P27 When either one of G 10 line keys on key matrix is touched a corresponding signal will be input into P25 36 P24 I...

Страница 23: ...on X24C02 is a 2K bit serial memory enabling CMOS to be erased written electrically This memory is constructed with 256 registers x 8bits enabling individual access read and write operations to be performed Details of input output signal for IC2 are as shown in the following diagram 2 2 Memory IC IC2 FUNCTIONAL DIAGRAM E PROM 256 x 8 2 START STOP LOGIC CONTROL LOGIC SLAVE ADDRESS REGISTER COMPARAT...

Страница 24: ...o the control unit being sure that the lead wires are not twisted 3 After aluminium foil is removed be careful that abnormal voltage due to static electricity etc is not applied to the input or output terminals 4 Attach connectors electrolytic capacitors etc to PWB making sure that all connections are tight 5 Be sure to use specified components where high precision is required 1 Precautions for Ha...

Страница 25: ... the bit will cause contamination of the different alloys which will alter their characteristics making good soldering more difficult It will be necessary to clean and replace bits more often when using lead free solder To reduce bit wear care should be taken to clean the bit thoroughly after each use Sn Ag Cu The following procedure enables the servicer to obtain the total using times cook cycles...

Страница 26: ...celling total using times and total operation time user and service and all other counter Flashing 0 1sec BUZZER PAD DISPLAY INDICATOR PHONE Door close SET SET No within 2 0sec DOUBLE QUANTITY DOUBLE CHECK SINGLE SET 4 Practice for inputting total operation time Ex 1234 hours Flashing 0 1sec BUZZER PAD DISPLAY INDICATOR PHONE Door close CHECK CHECK No CHECK 82 68 CHECK user total count 2 SIGNAL SI...

Страница 27: ...No CHECK 82 68 CHECK user total count DOUBLE QUANTITY SIGNAL SET 0 3 1 0 0 31 00 x 4 SET 31 00 user total count 3100 set A 1 1 No after 1 sec 1 32 memory 1 count SET 0 1 0 0 1 00 x 3 SET 1 00 memory 1 count 100 set CHECK NOTE 1 To input using times of other memory touch necessary Memory key at above step A 2 To input using times of manual cooking touch SELECTATIME key at above step A 3 To input us...

Страница 28: ...cord 2 Visually check the door and cavity face plate for damage dents cracks signs of arcing etc Carry out any remedial work that is necessary before operat ing the oven Do not operate the oven if any of the following conditions exist 1 Door does not close firmly 2 Door hinge support or latch hook is damaged 3 The door gasket or seal is damaged 4 The door is bent or warped 5 There are defective pa...

Страница 29: ... duct to the left 10 Carefully remove four 4 screws holding magnetron to waveguide when removing the screws hold the magnetron to prevent it from falling 11 Remove the magnetron from the waveguide with care so the magnetron antenna is not hit by any metal object around the antenna CAUTION WHEN REPLACING THE MAGNETRON BE SURE THE R F GASKET IS IN PLACE AND THE MAGNETRON MOUNTING SCREWS ARE TIGHTENE...

Страница 30: ...from the oven 9 Remove the fan blade from the fan motor shaft according to the following procedure 10 Hold the edge of the rotor of the fan motor by using a pair of groove joint pliers CAUTION Make sure that no metal pieces enter the gap between the rotor and the stator of the fan motor because the rotor is easily shaven by pliers and metal pieces may be produced Do not touch the pliers to the coi...

Страница 31: ... 3 Secure latch hook with two 2 mounting screws to oven flange 4 Make sure that the monitor switch is operating properly and check continuity of the monitor circuit Refer to chapter Test Procedure and Adjustment procedure Figure C 3a Power Supply Cord Replacement Figure C 3b Power Supply Cord Replacement Power Supply Cord Chassis Support WHT RED L N Screw Green Wire Noise Filter White Wire Oven Ca...

Страница 32: ...C 5 Latch Switch Adjustments 13 Remove the two 2 screws holding the door handle and the latch angle assembly through the door frame 14 Now door handle is free LATCH HEADS REMOVAL 15 Remove the one 1 screw holding the latch angle assembly to the door frame 16 Remove the latch angle assembly together with the latch lever latch spring and the upper and lower latch heads from the door frame 17 Release...

Страница 33: ...tenna Refer to Figure C 8 7 Release the antenna holder from the one 1 tab of the oven cavity bottom plate 8 Remove the stirrer antenna assembly from the oven cavity bottom plate 9 Remove the antenna motor shaft from the hole of the oven cavity bottom plate 10 Now the antenna motor shaft is free Figure C 8 Antenna Motor Shaft Removal ANTENNA MOTOR SHAFT REPLACEMENT Upper Oven Hinge Upper Oven Hinge...

Страница 34: ...into the oven cavity bottom plate 7 Now the ceramic shelf is installed INSTALLATION OF CERAMIC SHELF WARNING Make sure that the rubber packing is not caught between the oven door and the oven cavity front plate to avoid possible exposure to excessive microwave energy Flat face Flat face To right wall of oven cavity To left wall of oven cavity Antenna motor shaft Antenna holder Stirrer antenna Stir...

Страница 35: ...GRN POWER SUPPLY CORD NOISE FILTER FUSE COM WHT WHT RED WHT WHT N C N O COM CONNECTOR ORG ORG WHT BRN BLU ANTENNA MOTOR MONITOR SWITCH WHT GRY RED RED YLW YLW ORG YLW BLU BLU IC1 RY2 T1 RY3 CN G CN A 7 1 1 2 CN B 2 3 4 5 1 BLU GRY CN A NEUTRAL HOT EARTH RED BLK GRN GRY N O COM DOOR SENSING SWITCH SECONDARY INTERLOCK SWITCH CONTROL UNIT 2 1 GRN G R N G R N GRY CN B NOTE Hot GRY wire must be connect...

Страница 36: ...P55 P54 P53 P52 P51 P50 P47 P46 P45 P44 P43 P42 INT1 P40 RESET P71 P70 XIN XOUT VSS 1 5 15 10 20 25 30 33 P30 P31 P32 P33 P34 P35 P36 P37 P00 P01 P02 P03 P04 P05 P06 P07 P10 P11 P12 P13 P14 P15 P16 P17 P20 P21 P22 P23 P24 P25 P26 P27 32 35 40 45 50 55 60 64 IC1 IZA897DR CF1 CST4 00MGW R80 4 7k R81 4 7k R82 4 7k R83 4 7k R88 4 7k R87 4 7k R86 4 7k R85 4 7k R84 4 7k R50 100 R51 100 R52 100 R53 100 R...

Страница 37: ...5 AN4 AN3 AN2 AN1 AN0 P55 P54 P53 P52 P51 P50 P47 P46 P45 P44 P43 P42 INT1 P40 RESET P71 P70 XIN XOUT VSS 1 5 15 10 20 25 30 33 P30 P31 P32 P33 P34 P35 P36 P37 P00 P01 P02 P03 P04 P05 P06 P07 P10 P11 P12 P13 P14 P15 P16 P17 P20 P21 P22 P23 P24 P25 P26 P27 32 35 40 45 50 55 60 64 IC1 IZA897DR CF1 CST4 00MGW R80 4 7k R81 4 7k R82 4 7k R83 4 7k R88 4 7k R87 4 7k R86 4 7k R85 4 7k R84 4 7k R50 100 R51...

Страница 38: ...RY3 D23 C80 R68 J5 J6 C6 C5 Q2 JJ C64 R65 R66 E B IC2 R31 R32 E Q60 CN G CN B MICRO 1 MICRO 2 CN D R84 IC1 JF JC JB C10 R102 C100 D100 TB2 J7 D5 OL B B E E Q21 Q24 R6 ZD3 SM TTM TB1 R100 Q23 J9 D10 C3 B E D21 D22 11 12 T1 P P S VRS1 VRS2 POWER CN A POWER C1 E B Q22 R40 SP1 10 C62 B R33 R3 C7 ZD2 2 3 6 5 7 J4 J3 4 R67 IC3 R5 C30 C31 1 1 12 3 1 1 33 32 25 20 15 40 50 55 64 3 3 1 1 7 1 60 16 9 8 4 5 ...

Страница 39: ...AB 3 1C QCNCWA057DRE0 12 pin connector G 1 AF C1 VCEAB51EW228M Capacitor 2200 uF 25V 1 AE C2 RC KZA087DRE0 Capacitor 0 1 uF 50V 1 AA C3 VCEAB31AW476M Capacitor 47 uF 10V 1 AA C4 RC KZA087DRE0 Capacitor 0 1 uF 50V 1 AA C5 VCEAB31AW476M Capacitor 47 uF 10V 1 AA C6 RC KZA087DRE0 Capacitor 0 1 uF 50V 1 AA C7 VCKYD11CY103N Capacitor 0 01 uF 16V 1 AA C8 9 RC KZA087DRE0 Capacitor 0 1 uF 50V 2 AA C20 VCEA...

Страница 40: ...BB 4 15 PCUSGA504WRP0 Insertion cushion 2 AB 4 16 PSKR A348WRW0 Insertion plate A 1 AN 4 17 GCOVHA404WRE0 VCP cap 2 AG 4 18 LANGFA199WRWZ Chassis support 1 AH 4 19 NSFTPA035WRFZ Antenna motor shaft 1 AQ 4 20 PCLICA032WRE0 Hand clip 4 5 AD 4 21 PCLICA033WRE0 Hand clip 5 4 AD 4 22 PCOVPA344WRF0 Side splash cover 1 AF 4 23 PCOVPA345WRF0 Back splash cover 1 AF 4 24 PCUSGA249WRP0 Cushion 3 AA 4 25 PCUS...

Страница 41: ... 5 3 HBDGCA089WRE0 Door badge R 21JV F 1 AG 5 3 HBDGCA083WRE0 Door badge R 21HT F 1 AE MISCELLANEOUS 6 1 TINSEA899WRRZ Instruction book 1 AL 6 2 FW VZC074WREZ Main wire harness 1 AX 6 3 TCAUAA166WRR0 DHHS caution label 1 AB 6 4 TCAUAA295WRRZ Monitor caution 1 AH 6 5 TCAUAA243WRR0 Earth caution 1 AC 6 6 TCAUAA245WRR0 Cover caution 1 AC 6 7 TLABMA572WRR0 Menu sticker 1 AE 6 8 TMAPCA777WRRZ Schematic...

Страница 42: ...7 5 4 35 4 39 7 11 7 11 2 5 4 7 1 1 4 6 4 6 7 7 4 30 4 24 4 24 2 4 4 10 6 8 2 1 4 14 4 20 7 1 4 8 2 3 7 8 7 11 4 11 1 14 1 2 4 29 4 20 4 22 4 34 7 3 4 25 7 3 7 1 1 4 6 3 6 6 1 12 1 4 4 24 4 36 7 1 7 9 7 8 7 2 1 7 7 1 1 6 2 4 4 17 4 41 2 2 4 13 4 12 4 31 7 11 7 10 4 26 4 26 4 2 4 19 4 23 4 21 4 21 4 21 4 1 7 6 7 13 7 13 7 13 4 9 4 32 4 18 4 16 1 10 1 9 4 28 6 5 x2 4 40 6 10 4 27 4 20 4 20 4 37 4 38...

Страница 43: ...2 3 3 3 2 3 3 2 1 3 2 3 1 3 4 3 4 3 4 3 4 Actual wire harness may be different from illustration 5 1 6 5 2 5 1 4 5 6 2 5 1 15 5 1 7 5 1 8 5 1 8 5 1 9 5 1 13 5 1 17 5 1 11 5 1 3 5 1 4 1 5 1 1 5 1 4 5 5 1 12 5 1 12 5 1 14 5 1 18 5 1 4 5 1 17 5 1 2 5 1 16 5 1 16 5 1 16 5 1 16 x4 x2 6 9 5 3 5 1 5 1 5 5 1 10 5 1 4 3 5 1 4 4 5 1 4 2 ...

Страница 44: ...eans electronic me chanical photocopying recording or other wise without prior written permission of the publisher PACKING AND ACCESSORIES INSTRUCTION BOOK TOP PAD ASSEMBLY FPADBA385WRK0 BOTTOM PAD ASSEMBLY FPADBA386WRK0 WRAP COVER SSAKHA034WRE0 DOOR PROTECTION SHEET SPADPA204WRE0 PACKING CASE SPAKCD113WRE0 R 21HT F SPAKCD239WRE0 R 21JV F Not Replaceable Items TRAY HOLDER SPADFA435WRE0 Into the Ov...

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