Sharp R-21JCA-F service manual CN-A3 Pin5mm Pitch

Page 30

R-21JCA-F

1

2

3

4

5

6

A

POWER TRANSFORMER

OVENLAMP

ANTENNA

MOTOR

FANMOTOR

AC

120V/60Hz

DOOR

SENSING

SWITCH

CN-A3

Pin5mm

Pitch

A

N.O

COM

N.O

COM

A1

A3

RY2

KRC105S

SPECIFIED1/10W5%

SPECIFIED0.01µ/50V

SPECIFIED1SS270A

B

Q21

KRA101S

D21

Q22

RY1

D22

B

3 x HZ11A3

KRC101S

D30

NOT

NOT

NOT

R2

x2

ZD1

ZD2

ZD3

R22

4.7K

Q20

D20

R30

4.7K

C31

0.1µ/50V

IF:

IF:

IF:

1W510

/35V

R1

R3

1W1K

2 x HZ6C3

R204.7K

C21 10µ C20

R31

47K

C

KTC3198A

ZD4

ZD5

0.1µ

/50V

R21

4.7K

C30

C

VC

Q1

14

KRA101S

Q2

KTA1504

4.7K

0.1µ/50V

7K.4

CF1 4MHz

4

Q70

R6

C61

(JF)

KRA101S

Circuit

Q71

5

1K

R5

HZ4C1

ZD6

INT0

N.F

VDD

VSS

XIN

11 XOUT

10CNVSS

9RESET

C6

C60

KRA101S

D

7K.4

R10

16

15

14

13

12

8

P22

6

KRA101S

Q72

D

INT1 17

D11

AIN0 18

7

P21

AIN1 19

6

P20

AIN2

20

5

D7

D10

1µ/50V.0

C4

AIN3

21

P1026I-1P1127

IXA167DR

4

D6

8 7

Q73

LD14 LD13 LD12 LD11

PanelControl .2-S Figure

P00

22

3

D5

D82

D78(.)

D74(6M)

(.)

LD1

(20S)

011Ax20

C7

P01

23

2

D4

27K

P02

24

1

D3

R9

SP1

R70

430

D83

LD19 LD18 LD17LD16

D79(.)

D75(7M)

LD9 LD8 LD7LD6

(3M)

LD2

(40S)

-LTLLD201CHE-

E

R8

10

330

).(

(1M)

E

27K 27K

R41 R40 1.5K

R42 3.3K

Q40 KRC101S

P0325

P1228

P1329

D030

D131

D232

R72 R71

D85 D84

D81D80(.)(.)

D77(9M) D76(8M)

D73 D72D71D70

LD4 LD3

_

R7

4.7K

11

240

(4M)

(.)

LD1

220µ/16V

(J3)

7K.4 (J2)

12

R73

150

LD20

(15M)

LD15

(10M)

LD10

(5M)

LD5

(2M)

2K.6 (J5)

7K.4 (J4)

13

R74

100

C5

(J7)

7K.4 (J6)

F

VR

F

9

V1000µ/35

R50

10K

3

4.7K

4.7K

C3

R62

R63

V 1µ/50.0

C2

C

A

2

R61 R60

10K 10K

ICP1

D4

D2

B

SW1

4

D3

D1 R12

1

G

1N4005Ex

G

2.2µ/160VAC

C1

1/2W100K

(J1)

R11

2W100

VRS1

10G471K

H

H

A5

AC

1

2

3

4

5

6

28

Image 30

Contents Model R-21JCA-F Before Servicing When the testing is completed Dont Touch Before ServicingMicrowave Measurement Procedure RequirementsLeakage test Light Duty Commercial Microwave Oven 21JCA-F Foreword Sharp Electronics CorporationMaximum width, depth and height SpecificationGeneral Information Actual capacity for holding food is lessOven Diagram 10 6OFF Condition OperationDescription of Operating Sequence Cooking ConditionFigure O-1 Oven Schematic-OFF Condition FM AMDescription and Function of Components Troubleshooting Guide Test Procedure Possible Case Defective PartsProblem Microwave Output Power Power Transformer TestHigh Voltage Capacitor Test Thermal CUT-OUT Test 125˚C OvenThermal CUT-OUT Test 145˚C Magnetron Primary Interlock System Test Door Sensing SwitchMonitor Switch Test Primary Interlock Relay RY1Control Panel Assembly Test Before testingNoise Filter Test Test Procedures Letter Component Test Relay TestSteps Occurrence Cause or Correction Touch Control Panel Assembly Description of LSIInternal clock oscillation frequency input setting Pin No Signal Description Auto clear terminalPower source voltage Power source voltage +5VServicing of Touch Control Panel Other PrecautionsTouch Control Panel Servicing Servicing ToolsEmploying lead-free solder Precautions for Using LEAD-FREE SolderUsing lead-free wire solder SolderingComponent Replacement and Adjustment Procedure Power Transformer RemovalOuter Case Removal Control Panel Assembly Removal Magnetron RemovalOven Lamp and Lamp Socket Removal Cooling FAN Motor Removal Positive Lock Connector NO-CASE Type RemovalAntenna Motor Removal Rear ViewPower Supply Cord Replacement Re-installRemoval Door Parts Removal Antenna Motor Shaft Replacement After any service, make sure of the followingRemoval Installation of Ceramic Shelf Figure C-10. Stirrer Antenna Assembly InstallationPictorialDiagram HighvoltagecomponentsCN-A3 Pin5mm Pitch Figure S-3. Printed Wiring Board Cabinet Parts Parts ListElectric Parts Control Panel PartsMiscellaneous HOW to Order Replacement PartsDoor Parts SCREWS,NUTS and WashersOven and Cabinet Parts Control Panel Parts Packing and Accessories Copyright 2005 by Sharp Corporation ALL Rights Reserved