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8

R - 4 1 9 C K

6. Re-install the outer case (cabinet).
7. Reconnect the power supply cord after the outer case is installed.
8. Run the oven and check all functions.

TEST PROCEDURES

PROCEDURE

LETTER

COMPONENT TEST

                                               Key Unit

5

4

3

2

1

0

9

8

7

6

START

BEVERAGE

POPCORN

Power

Level

MINUTE

PLUS

Fresh
Rolls/

muffins

Frozen

entrees

CUSTOM

HELP

Ground Meat

(SENSOR COOK)

Stop

Clear

Fresh

vegetables

G 8

G 9

G10

G11

G12

G13

G14

G 7

G 6

G 5

G 4

G 3

G 2

G 1

Chicken

Pieces

Steaks/

Chops

Baked

Potatoes

Frozen

Vegetables

Clock

Kitchen

Timer

Fish

Seafood

Frozen

Rolls/

muffins

Ground Meat

(COMPU DEFROST)

Reheat

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. If the display fails to clear when the STOP/CLEAR pad is depressed, first verify the flat ribbon cable

is making good contact, verify that the door sensing switch (stop switch) operates properly; that is the
contacts are closed when the door is closed and open when the door is open. If the door sensing switch
(stop switch) is good, disconnect the flat ribbon cable that connects the key unit to the control unit and
make sure the door sensing switch is closed (either close the door or short the door sensing switch
connecter). Use the Key unit matrix indicated on the control panel schematic and place a jumper wire
between the pins that correspond to the STOP/CLEAR pad making momentary contact. If the control
unit responds by clearing with a beep the key unit is faulty and must be replaced. If the control unit does
not respond, it is faulty and must be replaced. If a specific pad does not respond, the above method
may be used (after clearing the control unit) to determine if the control unit or key pad is at fault.

5. Reconnect all leads removed from components during testing.

J              KEY UNIT TEST

WARNING : The oven should be fully assembled before following procedure.
(1) Place one cup of water in the center of the turntable tray in the oven cavity.
(2) Close the door, touch the " steaks / chops " pad once.
(3) The oven is in Compu Defrost cooking condition.
(4) The oven will operate as follows

1ST STAGE

2ND STAGE

WEIGHT

LEVEL

TIME

LEVEL

TIME

0.5lb

60%

27sec.

40%

17sec.

L

COMPU DEFROST TEST

(5) If improper operation is indicated, the control unit is probably defective and should be checked.

Summary of Contents for R-419CK

Page 1: ...FRONT COVER WARNING TO SERVICE PERSONNEL 1 MICROWAVE MEASUREMENT PROCEDURE 2 FOREWORD AND WARNING 3 PRODUCT SPECIFICATIONS 4 GENERAL INFORMATION 5 OPERATION 6 TEST PROCEDURE 8 PICTORIAL DIAGRAM 11 LSI UNIT CIRCUIT 12 PARTS LIST 13 PACKING AND ACCESSORIES 17 S100M140R419E R 419CK MICROWAVE OVEN MODEL SUPPLEMENTAL SERVICE MANUAL SHARP ELECTRONCS CORPORATION This document has been published to be use...

Page 2: ... and 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 to the owner BEFORE SERVICING Before servicing an operative unit perform a microwave emission check as per the Microwa...

Page 3: ...or 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 Reconnect th...

Page 4: ...enter 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...

Page 5: ...ive C The 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 Certaininitialpartsareintentionallynotgroundedandpresent a risk of electrical shock only during servicing Service personnel Do not contact the following parts while the appliance is energiz...

Page 6: ...ads Power Level pad Timer Clock pad Stop Clear pad START pad Oven Cavity Light Yes Safety Standard UL Listed FCC Authorized DHHS Rules CFR Title 21 Chapter 1 Subchapter J SPECIFICATION GENERAL INFORMATION GROUNDING INSTRUCTIONS This oven is equipped with a three prong grounding plug It must be plugged into a wall receptacle that is properly installed and grounded in accordance with the National El...

Page 7: ...OR RE MOVE THE ROUND GROUNDING PRONG FROM THIS PLUG OVEN DIAGRAM 1 One touch door open button Push to open door 2 Door latches The oven will not operate unless the door is securely closed 3 Removable turntable support 4 Removable turntable The turntable will rotate clockwise or counterclockwise 5 Oven lamp It will light when oven is operating or door is opened 6 Oven door with see through window 7...

Page 8: ...he oven should not be operated on sensor immediately after plugging in the unit Wait two minutes before cooking on SENSOR 2 The coil of shut off relay RY 1 is energized the turntablemotorareturnedon butthepowertransformer is not turned on 3 After about 16 seconds the cook relay RY 2 is energized The power transformer is turned on microwaveenergyisproducedandfirststageisstarted The 16 seconds is th...

Page 9: ...2 GRN POWER TRANSFORMER MONITOR FUSE 20A MAGNETRON TEMP FUSE CAPACITOR 1 0µF AC 2300V AH SENSOR SCHEMATIC 3 VARIABLE COOKING CONTROL HIGH 2 COOKING TIME PROGRAMMED 1 DOOR CLOSED NOTE CONDITION OF OVEN 4 START PAD TOUCHED 120V AC 60 Hz OVEN LAMP TURN TABLE MOTOR FAN MOTOR MONITOR SWITCH H V RECTIFIER MAGNETRON SECONDARY INTERLOCK SWITCH TTM OL FM MONITOR FUSE 20A CAVITY TEMP FUSE MAGNETRON TEMP FUS...

Page 10: ...ood disconnect the flat ribbon cable that connects the key unit to the control unit and make sure the door sensing switch is closed either close the door or short the door sensing switch connecter Use the Key unit matrix indicated on the control panel schematic and place a jumper wire between the pins that correspond to the STOP CLEAR pad making momentary contact If the control unitrespondsbyclear...

Page 11: ...llilitres 7 2 oz of tap water in 1000 millilitres measuring cup 3 Place the container on the center of tray in the oven cavity 4 Close the door 5 Touch REHEAT pad once Now the oven is in the sensor cooking condition and REHEAT SENSOR will appear in the display 6 The oven will operate for the first 16 seconds without generating microwave energy NOTE ERROR will appear if the door is opened or STOP C...

Page 12: ...ger of select switch for more than 3 seconds This condition is same as judgement by AH sensor 9 4 After approximately 3 seconds the display shows xx xx which is remaining cooking time and the display count down If the above is not the case the control unit is probably defective If the above is proper the AH sensor is probably defective 10 Disconnect the power supply cord and then remove outer case...

Page 13: ...socket POWER TRANSFORMER COM NO NOTE The neutral WHT GRY wire must be connected to the terminal with N mark on the power supply cord RED WHT BRN RED WHT WHT ORG WHT RED BLK RED BLU PNK GRN GRN to Oven cavity WHT WHT RED BLK WHT WHT BLUE MARK WHT RED WHT CAVITY TEMP FUSE MAGNETRON TEMP FUSE FAN MOTOR MONITOR FUSE HOLDER RED RED WHT 1 WHT GRY WHT ORG BLU GRN ORG ORG RY2 RY1 PRIMARY INTERLOCK RELAY C...

Page 14: ...12 R 4 1 9 C K 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 3 CPU Unit Circuit ...

Page 15: ... FW VZB146MRE0 M 12Pin wire harness CN C 1 AG C1 RC KZA087DRE0 J Capacitor 0 1 uF 50V 1 AA C2 VCEAB31VW108M J Capacitor 1000 uF 35V 1 AF C3 RC KZA087DRE0 J Capacitor 0 1 uF 50V 1 AA C4 5 VCEAB31VW106M J Capacitor 10 uF 35V 1 AF D1 4 VHD11ES1 1 J Diode 11ES1 4 AB D5 8 VHD1SS270A 1 J Diode 1SS270ATA 4 AA Q1 2 VS2SB1238 3 J Transistor 2SB1238 2 AA Q3 VSKRC243M 3 J Transistor KRC243M 1 AB R1 VRD B12EF...

Page 16: ... 4 FROLPB025MRK0 M Turntable support 1 AN 6 5 NTNT A095WRE0 M Turntable tray 1 AN 6 6 TCAUAB037MRR0 M Monitor caution label 1 AA 6 7 TCAUAB038MRR0 M DHHS Screw caution label 1 AB 6 8 TINSEB222MRR0 M Operation manual 1 AF SCREWS NUTS AND WASHERS 7 1 LX BZA041WRE0 M Special screw 1 AA 7 2 LX CZ0052WRE0 M Special screw 3 AA 7 3 XHTSD40P12RV0 M Screw 4mm x 12mm 1 AA 7 4 LX BZ0081YBE0 M Special screw 4...

Page 17: ... E F G H OVEN AND CABINET PARTS 2 3 4 7 6 7 1 5 4 6 4 8 4 9 6 5 6 4 2 1 7 6 1 12 4 10 7 2 7 2 7 5 4 3 1 13 7 3 7 6 1 9 7 8 7 8 4 2 7 5 1 11 1 3 1 4 7 4 1 8 1 8 4 4 7 1 4 1 1 1 1 2 2 2 2 2 2 2 2 2 7 5 7 5 4 12 7 5 6 6 1 7 1 6 4 5 1 14 7 7 7 7 7 9 7 9 7 10 4 13 ...

Page 18: ...6 4 5 1 2 3 A B C D E F G H A B C D E F G H CONTROL PANEL PARTS 5 1 5 1 2 5 1 1 5 3 5 4 5 5 5 2 Actual wire harness may be different from illustration 6 3 6 2 6 1 DOOR PARTS MISCELLANEOUS 3 5 3 2 3 2 1 3 4 3 3 3 2 2 3 2 3 3 1 ...

Page 19: ...ORIES DOOR PROTECTION SHEET PLASTIC BAG PACKING CASE TOP PAD ASSEMBLY INTO THE OVEN CAVITY 6 5 TURNTABLE TRAY 6 4 TURNTABLE SUPPORT 6 8 OPERATION MANUAL TRAY PACK SPADPB038MRE0 BOTTOM PAD ASSEMBLY TRAY HOLDER Non replaceable items ...

Page 20: ...Y SHARP CORPORATION ALL RIGHTS RESERVED No part of this publication may be repro duced stored in retrieval systems or trans mitted in any form or by any means elec tronic mechanical photocopying record ing or otherwise without prior written per mission of the publisher ...

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