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R-230BK
R-230BW

J

KEY UNIT TEST

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.
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.

1

2

3

4

5

6

7

8

9

0

POPCORN

START

MINUTE PLUS

POWER

LEVEL

STOP

CLEAR

COMPU

 DEFROST

BEVERAGE

 FRESH

VEGETABLES

DINNER

 PLATE

BAKED

POTATO

TIMER

CLOCK

ROLL,

MUFFIN

G 6

G 5

G 4

G 3

G 2

G 1

G 7

G 8

G 9

G10

TEST PROCEDURES (CONT'D)

PROCEDURE

LETTER

COMPONENT TEST

L

COMPU DEFROST TEST

(1) Place one cup of water in the center of the turntable tray in the oven cavity.
(2) Close the door, touch the " COMPU DEFROST " pad once and touch the Number pad "5". And then touch

the "START" pad.

(3) The oven is in Compu Defrost cooking condition.
(4) The oven will operate as follows.

WEIGHT

1ST STAGE

2ND STAGE

3RD STAGE

LEVEL

TIME

LEVEL

TIME

LEVEL

TIME

0.5lb

50%

1min.25sec.

30%

1min.40sec.

10%

1min.2sec.

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

Summary of Contents for R-230BK

Page 1: ...O SERVICE PERSONNEL 1 MICROWAVE MEASUREMENT PROCEDURE 2 FOREWORD AND WARNING 3 PRODUCT SPECIFICATIONS 4 GENERAL INFORMATION 5 SCHEMATIC DIAGRAM 5 TROUBLESHOOTING GUIDE 6 TEST PROCEDURE 6 PICTORIAL DIAGRAM 7 CONTROL PANEL CIRCUIT 8 PARTS LIST 9 PACKING AND ACCESSORIES 11 S2804R230BPW R 230BK R 230BW MODELS SERVICE MANUAL SHARP CORPORATION This document has been published to be used for after sales ...

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

Page 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...

Page 4: ...he center 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 Theplacingofthisstandardloadintheovenisimportantnotonlytoprotecttheoven butalsotoinsurethatanyleakage is measured accurately 4 Set the cooking control on Full Power Cooking Mode 5 Cl...

Page 5: ...rate the oven until the following points are ensured A The door is tightly closed B The door brackets and hinges are not defective C The door packing is not damaged D The door is not deformed or warped E There is not any 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 ...

Page 6: ...rowave Power for Variable Cooking Repetition Rate P HI Full power throughout the cooking time P 90 approx 90 of FULL Power P 80 approx 80 of FULL Power P 70 approx 70 of FULL Power P 60 approx 60 of FULL Power P 50 approx 50 of FULL Power P 40 approx 40 of FULL Power P 30 approx 30 of FULL Power P 20 approx 20 of FULL Power P 10 approx 10 of FULL Power P 0 No power throughout the cooking time EXPR...

Page 7: ...Figure O 1 Oven Schematic Off Condition SCHEMATIC NOTE CONDITION OF OVEN 1 DOOR CLOSED 2 CLOCK APPEARS ON DISPLAY POWER TRANSFORMER RECTIFIER MAGNETRON CAPACITOR 0 86µF C T FUSE 120V AC 60 Hz OVEN LAMP TURN TABLE MOTOR FAN MOTOR MONITOR SWITCH SECONDARY INTERLOCK SWITCH TTM OL FM GRN A3 COM N O DOOR SENSING SWITCH B1 B2 RY 1 RY 2 CONTROL UNIT PRIMARY INTERLOCK RELAY MAGNETRON THERMAL CUT OUT A1 ...

Page 8: ...K0 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 of the...

Page 9: ...it 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 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 ...

Page 10: ...e grounding conductor of the power supply cord has been grounded by power supply cord fixing screw The screw must allways be kept tight NOTE The neutral WHT wire must be connected to the terminal with N mark on the power supply cord RED WHT DOOR SENSING SWITCH GRY RED POWER TRANSFORMER HIGH VOLTAGE WIRE B BLK Blue Mark NOTE Hot RED wire must be connected to the terminal with blue mark on the oven ...

Page 11: ...59 15k R60 15k R64 220k R63 220k R62 220k R61 220k C64 C63 C62 C61 C61 C64 330pF 50v x 4 G10 G 9 G 8 G 7 G 6 G 5 G 4 G 3 G 2 G 1 R55 15k R54 15k R53 15k R52 15k R51 15k R50 15k R80 15k 0 9 7 8 5 6 1 2 4 3 START MINUTE PLUS COMPU DEFROST POWER LEVEL STOP CLEAR TIMER CLOCK POPCORN BEVERAGE BAKED POTATO DINNER PLATE FRESH VEGETABLES ROLL MUFFIN IC1 IZA868DR 1 42 40 22 25 30 35 10 5 15 21 SEG 0 SEG 1 ...

Page 12: ...uF 16V 1 AA C5 RC KZA087DRE0 Capacitor 0 1 uF 50V 1 AB C6 VCKYD11CY103N Capacitor 0 01 uF 16V 1 AH C20 VCEAB31HW104M Capacitor 0 1 uF 50V 1 AB C21 VCEAB31VW106M Capacitor 10 uF 35V 1 AB C40 VCKYD11CY103N Capacitor 0 01 uF 16V 1 AH C61 64 VCKYD11HB331K Capacitor 330 pF 50V 4 AA C70 VCKYD11CY103N Capacitor 0 01 uF 16V 1 AH C71 VCCCF61HH330J Capacitor 33 pF 50V 1 AB D1 4 VHD11ES1 1 Diode 11ES1 4 AB D...

Page 13: ...4WRE0 Latch spring 1 AB 5 6 PSHEPA622WRE0 Sealer film 1 AG 5 7 GCOVHA390WRF0 Choke cover 1 AK 5 8 XCPSD40P08000 Screw 4mm x 8mm 4 AA MISCELLANEOUS 6 1 FROLPA085WRK0 Turntable support 1 AS 6 2 NTNT A094WRE0 Turntable 1 AN 6 3 TINS A645WRR0 Instruction book 1 AE 6 4 FW VZB657WRE0 Switch harness 1 AH 6 5 FW VZB658WRE0 Main wire harness 1 AV 6 6 QW QZA150WRE0 High voltage wire B 1 AF 6 7 TCAUAA166WRR0...

Page 14: ...BINET PARTS 7 4 2 1 7 4 7 10 7 10 7 9 7 5 4 6 4 4 4 9 7 1 7 8 7 7 4 10 7 1 1 12 7 4 7 8 7 4 4 1 2 2 2 3 7 8 7 8 4 13 2 3 7 2 4 16 7 3 1 10 6 11 1 11 7 5 7 4 1 3 1 7 7 6 1 1 1 1 1 2 1 6 1 5 7 9 7 1 1 8 6 10 6 10 4 7 4 11 6 2 6 1 4 15 4 8 6 7 4 5 4 12 6 9 7 8 1 9 1 4 4 3 4 2 4 14 1 2 4 17 ...

Page 15: ...LANEOUS 5 3 6 5 6 6 5 5 5 2 5 4 5 8 5 8 5 6 5 7 5 1 Actual wire harness may be different than illustration 3 2 6 8 3 2 2 3 2 1 3 3 3 1 3 4 3 4 3 4 Befor attaching Control unit to Control panel Foil side of Control unit must be cleaned by ethyl alcohol CONTROL PANEL PARTS DOOR PARTS ...

Page 16: ...hotocopying recording orotherwise withoutprior written permission of the publisher TURNTABLE TRAY OPERATION MANUAL TURNRABLE SUPPORT INTO THE OVEN CAVITY Not replaceable items TRAY PAD ASSY CPADBA244WRK0 PACKING CASE MICROWAVE OVEN TOP PAD ASSEMBLY FPADBA375WRK0 POLYETHYLENG BAG SSAKHA014WRE0 DOOR PROTECTION SHEET SPADPA580WRE0 SPAKCD047WRE0 R 230BK SPAKCD048WRE0 R 230BW BOTTOM PAD ASSEMBLY FPADBA...

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