SHARP R1610, R-1611, R-1612 Service Manual

R-1610
R-1611
R-1612

SUPPLEMENTAL SERVICE MANUAL

S5911R1610X//

OVER THE RANGE

MICROWAVE OVEN

OFF

SENSORDEFROST TURNTABLE COOK

S e n s o r C o o k i n g

Baked

Sensor

potato

Popcorn

reheat

Frozen

Frozen

snacks

Fresh

entrees



vegetables



Ground

Rice Poultry

meat

More from your Microwave

Lunch on

Breakfast

the Run

Bar

Compu

Super

Defrost

Defrost

12345
67890

Turntable

Memory

Power

On/Off

Cook

Level

Kitchen Timer

Stop

Clock

Clear

Work

Night

Fan

Light

Light

Hi/Lo

HELP

Custom 

Help

Frozen

vegetables

Fish/

seafood

One Dish
Dinners

Beverage
Center

Minute

Plus
START
Touch On

Auto

Fan

MODELS

R-1610
R-1611
R-1612

In the interest of user-safety the oven should be restored to its original
condition and only parts identical to those specified should be used.

WARNING TO SERVICE PERSONNEL: Microwave ovens con­tain circuitry capable of producing very high voltage and
current. Contact with the following parts may result in a
severe, possibly fatal, electrical shock. (High Voltage Capaci­tor, High Voltage Power Transformer, Magnetron, High Volt­age Rectifier Assembly, High Voltage Harness etc..)

This is a supplemental Service Manual for Models R-1610, R-1611 and R-1612. These models are quite similar to
base model R-1600,R-1601 and R-1602. Use this supplemental manual together with the Base Models Service
Manual (Reference No. is S4910R1160X//) for complete operation, service information, etc..

TABLE OF CONTENTS

Page
PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO

AVOID POSSIBLE EXPOSURE 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 ..............................................................................................................................8

TEST PROCEDURE ..............................................................................................................................................9

TOUCH CONTROL PANEL ASSEMBLY ............................................................................................................11

CONPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE ................................................................14

PICTORIAL DIAGRAM ........................................................................................................................................16

POWER UNIT CIRCUIT ......................................................................................................................................17

LSI UNIT CIRCUIT...............................................................................................................................................18

INDICATOR CIRCUIT..........................................................................................................................................19

PARTS LIST ........................................................................................................................................................20

PACKING AND ACCESSORIES .........................................................................................................................25

SHARP CORPORATION

This document has been published to be used for after
sales service only.
The contents are subject to change without notice.

R-1610
R-1611
R-1612

PRECAUTIONS TO BE OBSERVED BEFORE AND
DURING SERVICING TO AVOID POSSIBLE
EXPOSURE TO EXCESSIVE MICROWAVE
ENERGY

(a) Do not operate or allow the oven to be operated with the door open.
(b) Make the following safety checks on all ovens to be serviced before activating the magnetron or other

microwave source, and make repairs as necessary: (1) interlock operation, (2) proper door closing, (3)
seal and sealing surfaces (arcing, wear, and other damage), (4) damage to or loosening of hinges and
latches, (5) evidence of dropping or abuse.

(c) Before turning on microwave power for any service test or inspection within the microwave generating

compartments, check the magnetron, wave guide or transmission line, and cavity for proper alignment,
integrity, and connections.

(d) Any defective or misadjusted components in the interlock, monitor, door seal, and microwave

generation 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 Microwave
Measurement Procedure outlined in this service manual.
If microwave emissions level is in excess of the specified limit, contact SHARP ELECTRONICS
CORPORATION immediately @1-800-237-4277.

If the unit operates with the door open, service person should 1) tell the user not to operate the oven
and 2) contact SHARP ELECTRONICS CORPORATION and Food and Drug Administration's
Center for Devices and Radiological Health immediately.

Service personnel should inform SHARP ELECTRONICS CORPORATION of any certified unit found
with emissions in excess of 4mW/cm2. The owner of the unit should be instructed not to use the unit
until the oven has been brought into compliance.

WARNING TO SERVICE PERSONNEL

Microwave ovens contain circuitry capable of pro­ducing very high voltage and current, contact with
following parts
fatal, electrical shock.

(Example)
High Voltage Capacitor, High Voltage Power Trans-

former, Magnetron, High Voltage Rectifier Assem­bly, High Voltage Harness etc..

Read the Service Manual carefully and follow all
instructions.

may result in a severe, possibly

Don't Touch !
Danger High Voltage

R-1610
R-1611
R-1612

Before Servicing

1. Disconnect the power supply cord , and then
remove outer case.

2. Open the door and block it open.

3. Discharge high voltage capacitor.

WARNING:RISK OF ELECTRIC SHOCK.

DISCHARGE THE HIGH-VOLTAGE
CAPACITOR BEFORE SERVICING.

The high-voltage capacitor remains charged about 60
seconds after the oven has been switched off. Wait for 60
seconds and then short-circuit the connection of the high­voltage capacitor (that is the connecting lead of the high­voltage rectifier) against the chassis with the use of an
insulated screwdriver.

Whenever troubleshooting is performed the power supply
must be disconnected. It may in, some cases, be necessary
to connect the power supply 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 power
transformer.

5. Ensure that these 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 the leads to the primary of the power
transformer.

5. Reinstall the outer case (cabinet).

6. Reconnect the power supply cord after the outer case is
installed.

7. Run the oven and check all functions.

After repairing

1. Reconnect all leads removed from components during
testing.

2. Reinstall the outer case (cabinet).

3. Reconnect the power supply cord after the outer case is
installed.

4. Run the oven and check all functions.

Microwave ovens should not be run empty. To test for the
presence of microwave energy within a cavity, place a cup
of cold water on the oven turntable, close the door and set
the power to HIGH and set the microwave timer for two (2)
minutes. When the two minutes has elapsed (timer at zero)
carefully check that the water is now hot. If the water
remains cold carry out Before Servicing procedure and re­examine the connections to the component being tested.

When all service work is completed and the oven is fully
assembled, the microwave power output should be checked
and microwave leakage test should be carried out.

1

R-1610
R-1611
R-1612

MICROWAVE MEASUREMENT PROCEDURE

A. Requirements:

1) Microwave leakage limit (Power density limit): The power density of microwave radiation emitted by a microwave oven
should not exceed 1mW/cm2 at any point 5cm or more from the external surface of the oven, measured prior to acquisition
by a purchaser, and thereafter (through the useful life of the oven), 5 mW/cm2 at any point 5cm or more from the external
surface of the oven.

2) Safety interlock switches Primary interlock relay and door sensing switch shall prevent microwave radiation emission in
excess of the requirement as above mentioned, secondary interlock switch shall prevent microwave radiation emission
in excess of 5 mW/cm2 at any point 5cm or more from the external surface of the oven.

B. Preparation for testing:
Before beginning the actual measurement of leakage, proceed as follows:

1) Make sure that the actual instrument is operating normally as specified in its instruction booklet.
Important:

Survey instruments that comply with the requirement for instrumentation as prescribed by the performance standard for
microwave ovens, 21 CFR 1030.10(c)(3)(i), must be used for testing.

2) Place the oven tray in the oven cavity.

3) Place the load of 275±15 ml (9.8 oz) of tap water initially at 20±5˚C (68˚F) in the 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.
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 Cooking Mode

5) Close the door and select a cook cycle of several minutes. If the water begins to boil before the survey is completed,
replace it with 275 ml of cool water.

C. Leakage test:

Closed-door leakage test (microwave measurement)

1) Grasp the probe of the survey instrument and hold it perpendicular to the gap between the door and the body of the oven.

2) Move the probe slowly, not faster than 1 in./sec. (2.5 cm/sec.) along the gap, watching for the maximum indication on
the meter.

3) Check for leakage at the door screen, sheet metal seams and other accessible positions where the continuity of the metal
has been breached (eg., around the switches, indicator, and vents).
While testing for leakage around the door pull the door away from the front of the oven as far as is permitted by the closed
latch assembly.

4) Measure carefully at the point of highest leakage and make sure that the highest leakage is no greater than 4mW/cm2,
and that the secondary interlock switch does turn the oven OFF before any door movement.

NOTE: After servicing, record data on service invoice and microwave leakage report.

2

R-1610
R-1611
R-1612

SERVICE MANUAL

OVER THE RANGE MICROWAVE OVEN

R-1610/ R-1611/1612

FOREWORD

This Manual has been prepared to provide Sharp Electronics Corp. Service Personnel with Operation and Service Information
for the SHARP OVER THE RANGE MICROWAVE OVEN, R-1610/ R-1611/ R1612.

The models R-1610, R-1611 and R-1612 are quite similar to base models R-1600, R-1601 and R-1602

(Reference No. is

S3910R1600X//).
It is recommended that service personnel carefully study the entire text of this manual and base model service manual so

that they will be qualified to render satisfactory customer service.
Check the interlock switches and the door seal carefully. Special attention should be given to avoid electrical shock and

microwave radiation hazard.

WARNING

Never operate 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 present a risk of electrical shock only during servicing.
Service personnel - Do not contact the following parts while the appliance is energized;
High Voltage Capacitor, Power Transformer, Magnetron, High Voltage Rectifier Assembly, High Voltage
Harness;
If provided, Vent Hood, Fan assembly, Cooling Fan Motor.

All the parts marked “*” on parts list are used at voltages more than 250V.
Removal of the outer wrap gives access to voltage above 250V.
All the parts marked “∆” on parts list may cause undue microwave exposure, by themselves, or when they are damaged,

loosened or removed.

SHARP ELECTRONICS CORPORATION

SHARP PLAZA, MAHWAH,

NEW JERSEY 07430-2135

3

R-1610
R-1611
R-1612

PRODUCT SPECIFICATION

ITEM DESCRIPTION

Power Requirements 120 Volts / 14 Amperes

60 Hertz
Single phase, 3 wire grounded

Power Output 1000 watts (IEC-705 TEST PROCEDURE)

Operating frequency of 2450MHz

Case Dimensions Width 29-15/16"

Height 16-3/8"
Depth 15- 1/16" (Not including the door handle)

Cooking Cavity Dimensions Width 21"

Height 8-7/8"

1.6 Cubic Feet Depth 14-7/16"
Hood lamp 2 bulbs, 20W x 2, Incandescent light bulbs
Hood fan Approx. 300 C.F.M.
Control Complement Touch Control System

Clock ( 1:00 - 12:59 )
Timer (0 - 99 min. 99 seconds)

Microwave 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

Sensor Cooking pads, Breakfast Bar pad, Lunch on the Run pad
One Dish Dinners pad, Super Defrost pad, Compu Defrost pad
Beverage Center pad, Number selection pads, Turntable On / Off pad
Memory Cook pad, Power Level pad, Minute Plus pad
Kitchen Timer / Clock pad, Stop / Clear pad, Start / Touch On pad

Work Light pad, Night Light pad, Fan Hi / Lo pad, Auto Fan pad
Oven Cavity Light 20W x 1 Incandescent light bulb
Safety Standard UL Listed FCC Authorized

DHHS Rules, CFR, Title 21, Chapter 1, Subchapter J
Weight Approx. 56 lbs.

4

R-1610
R-1611
R-1612

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 Electrical Code and local codes and ordinances.
In the event of an electrical short circuit, grounding reduces the risk of electric shock by providing an escape wire for the
electric current.

WARNING: Improper use of the grounding plug can result in a risk of electric shock.

Electrical Requirements
The oven is equipped with a 3-prong grounding plug. DO NOT UNDER ANY CIRCUMSTANCES CUT OR REMOVE THE
GROUNDING PIN FROM THE PLUG.
The power supply cord and plug must be connected to a separate 120 Volt AC, 60 Hz, 15 Amp. or more dedicated line, using
a grounded receptacle. The receptacle should be located inside the cabinet directly above the Microwave Oven/Hood
system mounting location.

3-Pronged Plug

Grounded
Receptacle Box

Grounding Pin

3-Pronged Receptacle

CONTROL PANEL

SENSOR DEFROST TURNTABLE COOK

OFF

HELP

S e n s o r C o o k i n g

Popcorn

Fresh

vegetables

Ground

meat

Sensor

reheat

Frozen
entrees



Rice Poultry

Baked

potatoes

Frozen

snacks



Custom 

Help

Frozen

vegetables

Fish/

seafood

More from your Microwave

Breakfast

Bar

Super

Defrost

Lunch on

the Run

Compu
Defrost

One Dish

Dinners

Beverage

Center

12345
67890

Turntable

On/Off

Kitchen Timer

Clock

Work

Light

Memory

Cook

Night

Light

Stop

Clear

5

Power

Level

Fan

Hi/Lo

Minute

Plus

START

Touch On

Auto

Fan

R-1610
R-1611
R-1612

OPERATION

DESCRIPTION OF OPERATING SEQUENCE

SENSOR COOKING CONDITION

Using the Sensor Cooking function, the foods are cooked or
defrosted without figuring time, power level or quantity.
When the oven senses enough steam from the food, it
relays the information to its microprocessor which will calcu­late the remaining cooking time and power level needed for
best results.
When the food is cooked, water vapor is developed. The
sensor “senses” the vapor and its resistance increases
gradually. When the resistance reaches the value set ac­cording to the menu, supplementary cooking is started.
The time of supplementary cooking is determined by experi­ment with each food category and inputted into the LSI.
An example of how sensor works (Baked potato):

1. Potatoes at room temperature. Vapor is emitted very
slowly.

MICROWAVE

any vapor from the oven cavity and sensor.

NOTE: During this first stage, do not open the door or touch

STOP/CLEAR pad.

4. When the sensor detects the vapor emitted from the
food, the display switches over to the remaining cooking
time and the timer counts down to zero.
At this time, the door may be opened to stir food, turn it
or season, etc.

5. When the timer reaches zero, an audible signal sounds.
The shut-off relay and cook relay are de-energized and
the power transformer, oven lamp, etc. are turned off.

6. Opening the door or touching the STOP/CLEAR pad, the
time of day will reappear on the display and the oven will
revert to an OFF condition.

2. Heat potatoes. Moisture and humidity is emitted rapidly.
You can smell the aroma as it cooks.

AH SENSOR

MICROWAVE

3. Sensor detects moisture and humidity and calculates
cooking time and variable power.

Cooking Sequence.

1. Touch one of the Sensor Cooking pads. And then touch
START/TOUCH ON pad.

NOTE: The oven should not be operated on Sensor Cooking

immediately after plugging in the unit. Wait two
minutes before cooking on Sensor Cooking.

2. The coil of shut-off relays (RY1 and RY3) are energized,
the oven lamp, turntable motor and cooling fan motor are
turned on, but the power transformer is not turned on.

3. After about 32 seconds, the cook relay (RY2) is energized.
The power transformer is turned on, microwave energy
is produced and first stage is started.
The 32 seconds is the cooling time required to remove

6

CAVITY 
THERMAL CUT-OUT

MAGNETRON 
TEMPERATURE FUSE

R-1610
R-1611
R-1612

SCHEMATIC

NOTE: CONDITION OF OVEN

1. DOOR CLOSED

2. CLOCK APPEARS ON DISPLAY

FUSE 
20A

120 V AC.
60 Hz

BLKWHT

GRN

GND

HOOD FAN
THERMAL
CUT OUT

B7

B5

B3
B1

HOOD
MOTOR

CAVITY 
THERMAL CUT-OUT

CONTROL UNIT

RY4

RY5

High

N.C.

Low

HOOD
CAPACITOR

A1 A3 B9 A7 A5 N.O.

HOOD
LAMP

SSR

RY3 RY1

TTM

HL HL

TURNTABLE

MOTOR

FAN

MOTOR

SECONDARY
INTERLOCK
SWITCH

Figure O-1. Oven Schematic-Off Condition

MAGNETRON 
TEMPERATURE FUSE

COM. N.O.

OVEN LAMP

FM

COM.

OL

PRIMARY

INTERLOCK 

RELAY

RY2

STM

STIRRER

MOTOR

F1
F2

F3

E1

E2

AH SENSOR

POWER
TRANSFORMER

DOOR
SENSING
SWITCH

HIGH VOLTAGE
CAPACITOR

0.94µF

HIGH VOLTAGE

MONITOR

SWITCH

RECTIFIER

SCHEMATIC

NOTE: CONDITION OF OVEN

1. DOOR CLOSED

2. COOKING TIME PROGRAMMED

3. VARIABLE COOKING CONTROL "HIGH"

4. "START" PAD TOUCHED

MAGNETRON

FUSE 
20A

120 V AC.
60 Hz

BLKWHT

GRN

GND

HOOD FAN
THERMAL
CUT OUT

CONTROL UNIT

B7

B5

B3
B1

HOOD
MOTOR

RY4

RY5

High

N.C.

Low

HOOD
CAPACITOR

A1 A3 B9 A7 A5 N.O.

HOOD
LAMP

SSR

HL HL

Figure O-2. Oven Schematic-Cooking Condition

RY3 RY1

TTM

TURNTABLE

MOTOR

FAN

MOTOR

SECONDARY
INTERLOCK
SWITCH

COM. N.O.

OVEN LAMP

FM

COM.

OL

PRIMARY

INTERLOCK 

RELAY

RY2

STM

STIRRER

MOTOR

F1
F2

F3

E1

E2

AH SENSOR

DOOR
SENSING
SWITCH

MONITOR

SWITCH

POWER
TRANSFORMER

HIGH VOLTAGE
CAPACITOR

0.94µF

HIGH VOLTAGE
RECTIFIER

MAGNETRON

7

R-1610
R-1611
R-1612

TROUBLESHOOTING GUIDE

Never touch any part in the circuit with your hand or an uninsulated tool while the power supply is connected.

When troubleshooting the microwave oven, it is helpful to follow the Sequence of Operation in performing the checks. Many
of the possible causes of trouble will require that a specific test be performed. These tests are given a procedure letter which
will be found in the "Test Procedure "section.

IMPORTANT: If the oven becomes inoperative because of a blown monitor fuse, check the monitor switch, relay (RY1)

primary interlock relay (RY2), door sensing switch and secondary interlock switch before replacing the
monitor fuse. If monitor fuse is replaced, the monitor switch must also be replaced. Use part FFS-BA016/
KiT 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 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 the leads to the primary of the power transformer.

5. Reinstall the outer case (cabinet).

6. Reconnect the power supply cord after the outer case is installed.

7. Run the oven and check all functions.

TEST PROCEDURE

CONDITION

SENSOR
COOKING
CONDITION

POSSIBLE CAUSE

DEFECTIVE PARTS

PROBLEM

The oven stops and "ERROR" is displayed or does not end during Sensor Cooking
condition. (Oven does not shut off after a cup of water is boiling by Sensor Cooking.)

Oven stops at 32 seconds after starting.

AND

LQCK

CONTROL UNIT

AH SENSOR

SHORTED OR OPENED WIRING

NOTE: For additional troubleshooting procedures, please refer back to the R-1600/1601/1602 base model Service

Manual.

8

TEST PROCEDURES

R-1610
R-1611
R-1612

PROCEDURE

LETTER

M 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

5. Reconnect all leads removed

6. Re-install the outer case

7. Reconnect the power supply cord

8. Run the oven and check all

COMPONENT TEST

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.

from components during testing.
(cabinet).
after the outer case is installed.
functions.

G 8

5
0

Compu
Defrost

Memory

Cook

One Dish

Dinners

G 7

4
9

Night
Light

Stop

Clear

Lunch on

the Run

G 6 G 5 G 4 G 3 G 2 G 1

3
8

Kitchen

Timer



Clock

Work

Light



Custom

Help

2
7

Turntable

On / Off

Power

Level

Breakfast

Bar

1
6

START

Touch On

Fan

Hi / Lo
Super

Defrost

Frozen
snacks

Fish/

seafood

Poultry

Fresh

vegetables

Frozen

vegetables

Frozen
entrees

Ground

meat

Rice

Sensor

reheat

Baked

potatoes

Beverage

Popcorn

center

Auto

Fan

Minute

Plus

Q AH SENSOR TEST

Checking the initial sensor cooking condition
WARNING : The oven should be fully assembled before following procedure.

(1)The oven should be plugged in at least two minutes before sensor cooking.
(2)Room temperature should not exceed 95˚F (35˚C).
(3)The unit should not be installed in any area where heat and steam are generated. The unit should

not be installed, for example, next to a conventional surface unit. Refer to the “INSTALLATION
INSTRUCTIONS” of the operation manual.

(4)Exhaust vents are provided on the back of the unit for proper cooling and air flow in the cavity. To

permit adequate ventilation, be sure to install so as not to block these vents. There should be some
space for air circulation.

(5)Be sure the exterior of the cooking container and the interior of the oven are dry. Wipe off any moisture

with a dry cloth or paper towel.

(6)The Sensor works with food at normal storage temperature. For example, chicken pieces would be

at refrigerator temperature and canned soup at room temperature.

(7)Avoid using aerosol sprays or cleaning solvents near the oven while using Sensor settings. The

sensor will detect the vapour given of by the spray and turn off before food is properly cooked.

(8)If the sensor has not detected the vapour of the food, ERROR will appear and the oven will shut off.

Water load cooking test
WARNING : The oven should be fully assembled before following procedure.

Make sure the oven has been plugged in at least two minutes before checking sensor cook operation.
The cabinet should be installed and screws tightened.
(1)Fill approximately 200 milliliters (7.2 oz) of tap water in a 1000 milliliter measuring cup.
(2)Place the container on the center of tray in the oven cavity.
(3)Close the door.
(4)Touch Sensor reheat pad once and touch the Start pad, Now, the oven is in the sensor cooking

condition and “SENSOR REHEAT” and "COOK" will appear in the display.

(5)The oven will operate for the first 16 seconds, without generating microwave energy.

G14 G13 G12 G11 G10 G 9

9

R-1610
R-1611
R-1612

TEST PROCEDURES

PROCEDURE

LETTER

COMPONENT TEST

NOTE: ERROR will appear if the door is opened or STOP/CLEAR pad is touched during first stage of

sensor cooking.

(6)After approximately 32 seconds, microwave energy is produced, and the display should start to count

down the remaining cooking time and oven should turn off after water is boiling (bubbling).

If the oven does not turn off, replace the AH sensor or check the control unit, refer to explanation below.

TESTING METHOD FOR AH SENSOR AND/OR CONTROL UNIT

To determine if the sensor is defective, the simplest method is to replace it with a new replacement
sensor.
(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)Remove the AH sensor.
(5)Install the new AH sensor.
(6)Reconnect all leads removed from components during replacing.
(7)Re-install the outer case (cabinet).
(8)Reconnect the power supply cord after the outer case is installed.
(9)Reconnect the oven to the power supply cord and check the sensor cook operation proceed as

follows:
9-1. Fill approximately 200 milliliters (7.2 oz) of tap water in a 1000 milliliter measuring cup.
9-2. Place the container on the center of tray in the oven cavity.
9-3. Close the door.
9-4. Touch Sensor reheat pad once and touch the Start pad.
9-5. The control panel is in automatic Sensor operation.
9-6. The display will start to count down the remaining cooking time, and the oven will turn off

automatically after the water is boiling (bubbling).
If new sensor dose not operate properly, the problem is with the control unit, and refer to explanation
below.

CHECKING CONTROL UNIT

(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 sensor connector that is mounted to control panel.
(5)Then connect the dummy resistor circuit (see fig.) to the sensor connector of control panel.
(6)Disconnect the leads to the primary of the power transformer.
(7)Ensure that these leads remain isolated from other components and oven chassis by using insulation

tape.
(8)After that procedure, re-connect the supply.
(9)Check the sensor cook operation proceed as follows:

9-1. Touch Sensor reheat pad once and touch the Start pad.

9-2. The control panel is in the sensor cooking operation.

9-3. After approximately 32 seconds, push plunger 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 “ X X . X X “ which is the 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.
(11) Open the door and block it open.
(12) Discharge high voltage capacitor.
(13) Disconnect the dummy resistor circuit from the sensor connector of control panel.
(14) Carry out necessary repair.
(15) Reconnect all leads removed from components during testing and repairing.
(16) Re-install the outer case (cabinet).
(17) Reconnect the power supply cord after the outer case installed. Run the oven and check all function.

10

TEST PROCEDURES

R-1610
R-1611
R-1612

PROCEDURE

LETTER

COMPONENT TEST

(18) Carry out “Water load cooking test” again and ensure that the oven works properly.

R1, R2 : 22Ω ± 1% 1/2W

Plunger

NC
NO

COM

F-1
F-2

F-3

To connector (F)
on Control Unit.

CONNECTOR

R3 : 4.3kΩ ± 5% 1/4W
R4 : 1MΩ ± 5% 1/4W

1
2
3

R1

R2

R3 R4

COM

NO

NC

Sensor Dummy Resistor Circuit

TOUCH CONTROL PANEL ASSEMBLY

OUTLINE OF TOUCH CONTROL PANEL

The touch control section consists of the following units
as shown in the touch control panel circuit.

(1) Key Unit
(2) Control Unit (The Control unit consists of LSI Unit and

Power U nit)

The principal functions of these units and the signals com­municated among them are explained below.

Key Unit

The key unit is composed of a matrix, signals generated in
the LSI are sent to the key unit through P10-P17.
When a key pad is touched, a signal is completed through
the key unit and passed back to the LSI through P41, P42,
AN8, AN9, AN10 and AN11 to perform the function that was
requested.

Control Unit

Control unit consists of LSI, power source circuit, synchroniz­ing signal circuit, ACL circuit, buzzer circuit, relay circuit,
absolute humidity sensor, indicator circuit and back light circuit.

1) LSI

This LSI controls the key strobe signal, relay driving
signal for oven function and indicator signal.

2) Power Source Circuit
This circuit generates voltages necessary for the control
unit from the AC line voltage.
In addition, the synchronizing signal is available in order
to compose a basic standard time in the clock circuit.

Symbol Voltage Application
VC -5.1V LSI(IC1)

3) Synchronizing Signal Circuit

The power source synchronizing signal is available in
order to compose a basic standard time in the clock
circuit. It incorporates a very small error because it works
on commercial frequency.

4) ACL Circuit

A circuit to generate a signals which resetting the LSI to
the initial state when power is applied.

5) Buzzer Circuit

The buzzer is responds to signals from the LSI to emit
audible sounds (key touch sound and completion sound).

6) Door Sensing Switch

A switch to inform the LSI if the door is open or closed.

7) Relay Circuit

To drive the magnetron, fan motor, stirrer motor, turnta­ble motor, hood motor, and light the oven lamp and hood
lamp.

8) Indicator Circuit

This circuit consists of 40 segments and 16 common
electrodes using a Light Crystal Display.
The Light Crystal Display (LCD) is drived by LCD driver
IC3.

9) Back Light Circuit

A circuit to drive the back light (Light emitting diodes LD1­LD10).

10) Absolute Humidity Sensor Circuit

This circuit detects moisture of the cooking food to allow
its automatic cooking.

11

R-1610
R-1611
R-1612

DESCRIPTION OF LSI

LSI(IZA958DR)

The I/O signal of the LSI(IZA958DR) is detailed in the following table.

Pin No. Signal I/O Description

NOTE: For additional informations of LSI, please refer back to the R-1600/1601/

1602 base model Service Manual.

1 AN10 IN Signal coming from touch key.

When either G10 line on key matrix is touched, a corresponding signal out of P10-P17 will
be input into AN10. When no key is touched, the signal is held at "H" level.

9 P15 OUT

10 P16 OUT

11 P17 OUT

29 P32 OUT Terminal not used.
30-34 P33-P37 OUT Used for initial balancing of the bridge circuit (absokute humidity sensor).

91 AN0 IN Used for initial balancing of the bridge circuit (absokute humidity sensor). This input is an

92 AN1 IN

99 AN8 IN

Key strobe signal.

Signal applied to touch-key section. A pulse signal is input to AN9, AN10, AN11, P41 and
P42 terminal while one of G3 line keys on key matrix is touched.

Key strobe signal.

Signal applied to touch-key section. A pulse signal is input to AN8, AN9, AN10, AN11, P41
and P42 terminal while one of G2 line keys on key matrix is touched.

Key strobe signal.

Signal applied to touch-key section. A pulse signal is input to AN9, AN10, AN11, P41 and
P42 terminal while one of G1 line keys on key matrix is touched.

analog input terminal from the AH sensor circuit, and connected to the A/D converter built
into the LSI.

AH sensor input.

This input is an analog input terminal from the AH sensor circuit, and connected to the A/
D converter built into the LSI.

Input terminal to judge the model.

The signal out of P16 will be input into AN8 through G2 line on key matrix. The LSI will judge
the model by this signal.

12

ABSOLUTE HUMIDITY SENSOR CIRCUIT

R-1610
R-1611
R-1612

(1)Structure of Absolute Humidity Sensor

The absolute humidity sensor includes two thermistors
as shown in the illustration. One thermistor is housed in
the closed vessel filled with dry air while another in the
open vessel. Each sensor is provided with the protective
cover made of metal mesh to be protected from the
external airflow.

ventilation opening for sensing

Sensing part
(Open vessel)

Thermistors

Sensing part
(Closed vessel)

(2)Operational Principle of Absolute Humidity Sensor

The figure below shows the basic structure of an absolute
humidity sensor. A bridge circuit is formed by two
thermistors and two resistors (R1 and R2).
The output of the bridge circuit is to be amplified by the
operational amplifier.
Each thermistor is supplied with a current to keep it
heated at about 150˚C (302˚F), the resultant heat is
dissipated in the air and if the two thermistors are placed
in different humidity conditions they show different
degrees of heat conductivity leading to a potential
difference between them causing an output voltage from
the bridge circuit, the intensity of which is increased as
the absolute humidity of the air increases. Since the
output is very minute, it is amplified by the operational
amplifier.

Absolute humidity vs,

R1

R2

Operational
amplifier

+



S : Thermistor
open vessel

C : Thermistor
closed vessel

Output
voltage

Output voltage

C

S

R3

output voltage characteristic

Absolute humidity (g/m )



2

balance the bridge circuit is deviated to increase the
voltage available at AN1 terminal of the LSI.
Then the LSI observes that voltage at AN1 terminal and
compares it with its initial value, and when the comparison
rate reaches the preset value (fixed for each menu to be
cooked), the LSI causes the unit to stop sensor cooking;
thereafter, the unit goes in the next operation
automatically.
When the LSI starts to detect the initial voltage at AN1
terminal 16 seconds after the unit has been put in the
Sensor Cooking mode, if it is not possible to balance, of
the bridge circuit due to disconnection of the absolute
humidity sensor, ERROR will appear on the display and
the cooking is stopped.

1) Absolute humidity sensor circuit

C. Thermistor in 
closed vessel
S. Thermistor in
open vessel

F-1

C

F-3

3.57k

S

F-2

VA : -15V

R96

R91

3.32k

R90

C90

R92

1.8k


R98

R99
R100

R101
R102

0.1

R97

47k

uF

620k

300k
150k

75k

37.4k

C93

+

IC2

R93

360k

VA : -15V

0.01uF

C91

0.015uF

R94

10k

VC : -5V

R95

47k

0.01uF

C92

D90

SW1

30

P33

SW2

31

P34

SW3

32

P35

SW4

33

P36

SW5

34

P37

91

AN0

LSI
(IC1)

92

AN1

(3)Detector Circuit of Absolute Humidity Sensor Circuit

This detector circuit is used to detect the output voltage of
the absolute humidity circuit to allow the LSI to control
sensor cooking of the unit. When the unit is set in the
sensor cooking mode, 16 seconds clearing cycle occurs
than the detector circuit starts to function and the LSI
observes the initial voltage available at its AN1 terminal.
With this voltage given, the switches SW1 to SW5 in the
LSI are turned on in such a way as to change the
resistance values in parallel with R98 ~ R102 of IC2.
Changing the resistance values results in that there is the
same potential at both F-3 terminal of the absolute humidity
sensor and AN0 terminal of the LSI. The voltage of AN1
terminal will indicate about -2.5V. This initial balancing is
set up about 16 seconds after the unit is put in the Sensor
Cooking mode. As the sensor cooking proceeds, the food
is heated to generate moisture by which the resistance

13

R-1610
R-1611
R-1612

COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE

WARNING AGAINST HIGH VOLTAGE:

Microwave ovens contain circuitry capable of producing very high voltage and current, contact with following parts may
result in severe, possibly fatal, electric shock.
(Example)
High Voltage Capacitor, Power Transformer, Magnetron, High Voltage Rectifier Assembly, High Voltage Harness etc..

WARNING:

1. Disconnect the power supply 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
operating 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.

Avoid possible exposure to microwave energy. Please follow the instructions below before
operating the oven.

WARNING FOR WIRING

To prevent an electric shock, take the following pre­cautions.

1. Before wiring,

1) Disconnect the power supply cord.

2) Open the door block it open.

3) Discharge the high voltage capacitor and wait for 60
seconds.

2. Don’t let the wire leads touch to the followiong parts;

1) High voltage parts:
Magnetron, High voltage transformer, High voltage
capacitor and High voltage rectifier assembly.

2) Hot parts:
Oven lamp, Magnetron, High voltage transformer
and Oven cavity.

4. The door is bent or warped.

5. There are defective parts in the door interlock system.

6. There are defective parts in the microwave generating
and transmission assembly.

7. There is visible damage to the oven.

Do not operate the oven:

1. Without the RF gasket (Magnetron).

2. If the wave guide or oven cavity are not intact.

3. If the door is not closed.

4. If the outer case (cabinet) is not fitted.

3) Sharp edge:

Bottom plate, Oven cavity, Waveguide flange,
Chassis support and other metallic plate.

4) Movable parts (to prevent a fault)

Fan blade, Fan motor, Switch, Switch lever, Open
button.

3. Do not catch the wire leads in the outer case cabinet.

4. Insert the positive lock connector until its pin is locked
and make sure that the wire leads do not come off even
if the wire leads are pulled.

5. To prevent an error function, connect the wire leads
correctly, referring to the Pictorial Diagram.

Please refer to ‘OVEN PARTS, CABINET PARTS, CONTROL PANAL PARTS, DOOR PARTS’, when carrying out any of
the following removal procedures:

HOOD FAN MOTOR, HOOD DUCT, OVEN LAMP SOCKET AND AH. SENSOR REMOVAL

1. Disconnect the power supply cord and remove the oven
from wall and remove outer case. (Refer to procedure of
"Removal of Oven from Wall" and "Outer case Removal"
of the base model Service Manual)

2. Open the door and block it open.

3. Discharge high voltage capacitor.

4.

Disconnect the 6-pin connector of the hood fan motor
from the main wire harness located at the right edge of the
hood duct and release the snap band from the hood duct.

5. Remove the hood fan motor from the hood duct by lifting
it up.

6. Now, the hood fan motor is free.

7. Disconnect the connector CN-F from the control unit.

8. Remove one (1) screw holding the hood duct to the oven
cavity front plate.

9. Release the 6-pin connector and the 3-pin connector of
the main harness A from the hood duct.

10.Disconnect the wire leads from the fan motor and chassis
support, and release the wire leads from holes of the
hood duct.

11.Remove the two (2) unit mounting screws from the
chassis support (right side) and the hood duct (left side).

12.Remove the one (1) screw holding the chassis support.

13.Remove the chassis support.

14

R-1610
R-1611
R-1612

14.Remove the hood duct from the oven cavity by lifting it up.

15.Screw the oven lamp off from the lamp socket.

16.Remove the lamp socket from the lamp angle.

17.Pull the wire leads from the oven lamp socket by pushing
the terminal hole of the oven lamp socket with a small flat
type screw driver.

18.Now, the oven lamp socket is free.

19.Release the harness of the AH sensor assembly from
three (3) wire holders of the hood duct.

20.Remove two (2) screws holding the AH sensor assembly
to the hood duct.

21.Now, the AH sensor assembly is free.

15

R-1610
R-1611
R-1612

1

A

Power Supply

cord 120V 60Hz

BLK

GRN

WHT

1

2

B

3

BLK

WHT

GRN

C

HOOD FAN MOTOR

BLK

YLW

YLW

WHT

345

WHT

2

BLK

BLU
1

BLU

RED

6

D

RED

ORG

Blue 

2

RED

WHT

OVEN LAMP & SOCKET

Marking

STIRRER MOTOR

CAVITY

THERMAL

BLK RED

RED

WHT

CUT-OUT

3

REDRED

MAGNETRON

TEMPERATURE 

FUSE

45

HIGH

VOLTAGE

RECTIFIER

HIGH VOLTAGE

CAPACITOR

HIGH VOLTAGE

WIRE A

RED

POWER 

TRANSFORMER

W
W

MAGNETRON

HIGH VOLTAGE COMPONENTS

FAN

WHT

MOTOR

WHT

RED

6

RED

RED

A

HOOD FAN

THERMAL

CUT-OUT

ORG

T

H

T

H

WHT

GRY

ORG

ORG

B

HOOD LAMPS

& SOCKETS

Blue Marking

WHT

ORG

WHT

BLK

C

D

E

F

G

AH SENSOR

BLK

RED

CN-F

123

WHT

H

GRN

GRN

RED

GRN

CN-E

2

1

to Chassis Support

WHT

BLU

RED

N.O.

WHT

GRN

COM.

DOOR SENSING SWITCH

ORG

CN-B

8

9

IC3

IC1

CONTROL UNIT

G

WHT

R

RED

CN-FCN-C

14

CN-G

1

TURNTABLE

MOTOR

Y

E

WHT

WHT

GRY

GRY

WHT

ORG

34567

BLK

BLK

RED

WHT

CN-A

2

1

BLK

FUSE & HOLDER

BLK

WHT

7

YLW

345

6

RED

2

1

RED

ORG

RED

WHT

N.C.

BLK

BLK

COM.

RED

MONITOR

SWITCH

ORG

ORG

N.O.

COM.

SECONDARY

INTERLOCK

SWITCH

F

G

RY1

N.O.

RY1

COM.

RY2

N.O.

RY2

COM.

to Right Base Plate

H

Figure S-1. Pictorial Diagram

RELAY

RY4

9

RY1

RY2

RY5

RY3

N.O.

1

C100

CN-A

N.O.

CN-B

1

7

COM.

COM.

3

1

T1

CN-C

PRIMARY

CN-E

INTERLOCK

RY2:

2
1

1

2

3

16

45

6

R-1610
R-1611
R-1612

1

A

B

AC

C

MOTOR RUN
CAPACITOR

D

TURNTABLE
MOTOR

HOOD LAMP

E

OVEN LAMP
FAN MOTOR

COM
LOW

HOOD MOTOR
HIGH

HOOD

F

THEMO

COM
MICRO

COM

G

A 7

A 1

A 3

A 5

B 9
NO

COM

B 1
B 3

B 5

B 7
NO

COM

NOTE

2

VRS1

10G471K

d

ab

(J1)

c

RY3

A

R110

47 1/2w

C110

0.033µ/250v

RY1

RY5

RY4

A

RY2

: IF NOT SPECIFIED 1SS270A
: IF NOT SPECIFIED 1/4W ± 5%

1

C100
7µ/230v

SSR1

T1

D4

83

5

D23D21

R20 1k 1/2w

D25D24D22

3

R4 27

D1-4
11ES1

D3

D2

D5

D1

+
–

C1 0.1µ/50v

45

Q2
2SB1238

C10

D6

R5 4.7k

C 2

C2 1000µ/35v

ZD1

R1

2.4k

Q1
2SB1238

R2 680 1/2w

HZ16-1

C3 0.1µ/50v

+
–

C4 10µ/35v

R3
510 1/2w

C 3

C 1
C 9
C 4

SP1
PKM22EPT

C11

C 5

R6 3.3k

C12

Q3
KRC243M

+

C5
10µ/35v

–

C13

C 6

C 8

C 7
C14
C15

E 2 E 1

DOOR SENSING
SWITCH

6

LED

GND

VC

VA
VR
INT

TURNTABLE
MOTOR

BUZZER

HOOD LAMP

HOOD MOTOR
HIGH / LOW

OVEN LAMP
FAN MOTOR
TURNTABLE
MOTOR

HOOD MOTOR
COM

MICRO
N.C.

DOOR
SENSING
SWITCH

A

B

C

D

E

F

G

H

1

Figure S-2. Power Unit Circuit

2

3

17

45

H

6

R-1610
R-1611
R-1612

1

A

GND

B

C

(J17) 4.7K

(J16)

(J15) 4.7K

(J14)

D

(J13) 4.7K

(J12)

(J10)

(J11) 4.7K

/25v

0.01µ

15k

C14

R11

CPU UNIT

E

Q10

2SA1037AK

UDZ4.3B

1k

ZD10

R10

/25v

0.01µ
C13

F

Q11

DTA143EKA

/50v

0.1µ
C12

15k
R12

2

See Figure S-4.



0.01µ/25v
C93

0.01µ/25v
C92

R95

47k

R94

10k

0.015µ/25v
C91

7

4

8

IC2

+

5

6

D90 MA152WA

IC2

BA4558

0.1µ/50v
C90

R96 3.57kDR91 3.32kD

I

H

R93

R92

C17 0.1µ/50v

360kF

1.8kF

R90 330 1w

80 51

R97

3

50

SEG6
SEG7
SEG8
SEG9

SEG10
SEG11
SEG12
SEG13
SEG14
SEG15
SEG16
SEG17
SEG18
SEG19

SEG20
P74
P75
P76
P77
P80
P81
P82
P83
P84
P85
P86
P87
P90
P91

SEG35

81

47k

SEG4

SEG3

SEG36 SEG5

SEG37

SEG38

R98 620kF
R99 300kF
R100 150kF
R101 75kF
R102 37.5kF

G

Q23

SEG2

SEG1

COM1

COM2

COM3

P40

P41

P42

SEG39

SEG40

EDCBA

DTA143EKA

COM4

IRQ0

VCC

IC1

AVCC

V 0

AN0

R40 4.7k

EDC

V 1

V 2

V 3

P37

VSS

CVCC

IZA958DR

AN1

AN2

AN3

AN4

AN5

AN6

0.01µ/25v
C40

R41 15k

C20 0.1µ/50v

Baked

potatoes

Frozen

vegetables

Super

Defrost

Bar

Breakfast

Help



Custom

the Run

Lunch on

Dinners

One Dish

6

A

B

C

KEY UNIT

45

15k

B

A

31

P36

P35

P34

P33
P32
P31
P30
P27
P26
P25
P24
P23
P22
P21
P20
RES

TEST
OSC1
OSC2

VSS
X 2
X 1

P17

P16

P15

P14

P13

P12

P11

P10

AVSS
AN11
AN10

AN7

AN8

AN9

100



1M

GHI
F

R80

CF1 CST4.00MGW

301

R60

15k
R61 

15k
R62

15k
R63

15k
R64

15k
R65

15k
R66

15k
R67

G 6 G 5 G 4 G 3 G 2 G 1

G 7

G 8

center

Beverage

Frozen

entrees

Frozen

snacks

1

2

3

4

5

Fan

Auto

meat

Ground

Fish/

seafood

6

7

8

9

0

Plus

Minute

Poultry Rice

START

Touch On

On / Off

Turntable

Timer

Kitchen

Light

Night

Compu

Defrost

Clock

Popcorn

reheat

Sensor

Fresh

vegetables

Fan

Hi / Lo

Level

Power

Light

Work

Stop

Clear

Cook

Memory

G14 G13 G12 G11 G10 G 9

4.7k
C110

C60 330p/50v
C61 330p/50v
C62 330p/50v
C63 330p/50v
C64 330p/50v
C65 330p/50v

R74 270k
R75 270k
R76 270k
R77 270k
R78 270k
R79 270k

R68 15k

R69 15k

R70 15k

R71 15k

R72 15k

D

R73 15k

E

Figure S-3. LSI Unit Circuit

F-2 F-3

F

AH SENSOR

F-1

F

C10 47µ/16v

–

C-4

C-2

+

C-3

G

H

INT

GND

1

VC

LD2 LD3

LD1

C-10

LED

Q25

DTA143EKA

Q24

DTA143EKA

LD4LD5LD6LD7

LD8

LD9LD10

C-9

C-11

TURNTABLE

MOTOR

VR

2

C-1

C-12

VA

HOOD LAMP

HOOD MOTOR

Q20 

DTA143EKA

OVEN LAMP

DTA143EKA

C-6

FAN MOTOR

C-13

H / L

Q30 

C-5

BUZZER

3

18

C-7

MICRO

Q22

Q21

DTA123JKA

D20 1SS355

DTA143EKA

D41 1SS355

: IF NOT SPECIFIED, 1/10W ± 5%

C-8

C-15

HOOD MOTOR

COM

DOOR

C-14

NC

NOTE

45

G

H

6

R-1610

6

45

1

2

3

6

45

1

2

3

A

B

C

D

E

F

G

H

A

B

C

D

E

F

G

H

R-1611
R-1612

DEFROSTSENSOR TURNTABLE OFF COOK HELP

COM9

SEG40

SEG39

SEG38

SEG37

COM11

COM10

33k
R132

SEG36

C126 0.1µ/50v

COM16

COM15

510k
R133

COM14

COM13

COM12

SEG35

SEG34

SEG33

SEG32

SEG31

SEG30

SEG29

SEG28

SEG27

SEG26

SEG25

SEG24

SEG23

SEG22

SEG21

SEG20

SEG19

SEG18

100

SEG10

SEG11

SEG12

SEG13

SEG14

SEG15

SEG16

SEG17

SEG18

SEG19

SEG20

SEG21

VREF

SEG22

IC3

P13

P12

P11

R03

R02

R01

R00

SEG9
SEG8
SEG7
SEG6
SEG5
SEG4
SEG3
SEG2
SEG1
SEG0
COM7
COM6
COM5
COM4
COM3
COM2
COM1
COM0

B Z

VSS

OSC1
OSC2

VD1

OSC3
OSC4

25 1

N C

N C

VDD

TEST

RESET

26

0.1µ/50v
C125

LIQUID CRYSTAL DISPLAY

SEG16

SEG24

SEG15

SEG25

SEG14

SEG26

SEG13

SEG27

SEG12

SEG28

SEG11

SEG29

SEG9

SEG10

SEG30

SEG31

SEG17

SEG23

IZA951DR

P10

P03

P02

P01

P00

K03

K02

K01

K00

SEG8

SEG32

N C

SEG7

SEG33

N C

SEG6

SEG34

N C

SEG5

76

50

SEG4

SEG3

C A
C B
C C
C D
C E
C F

VC5
VC4
VC3
VC2
VC1

SEG1

SEG2

7551

SEG35
SEG36
SEG37
SEG38
SEG39
COM16
COM15
COM14
COM13
COM12
COM11
COM10
COM9
COM8

COM1

COM2

COM3

C120 0.1µ/50v

COM4

COM5

COM6

COM7

C121 0.1µ/50v

COM8

C122 0.1µ/50v

C123 0.1µ/50v

0.1µ/50v
C129

0.1µ/50v
C127

0.1µ/50v
C128

Figure S-4. Indicator Circuit

V C


C124 0.1µ/50v

R134 15k

GND

IC1 P91

IC1 P90

R131 4.7 k

R130 4.7 k

R129 4.7 k

R128 4.7 k

R127 4.7 k

R126 4.7 k

R125 4.7 k

R124 4.7 k

R123 4.7 k

R122 4.7 k

R121 4.7 k

R120 4.7 k

IC1 P87

IC1 P86

IC1 P85

IC1 P84

IC1 P83

IC1 P82

IC1 P81

IC1 P80

IC1 P77

IC1 P76

IC1 P75

IC1 P74

19

: IF NOT SPECIFIED, 1/10W ± 5%

NOTE

R-1610
R-1611
R-1612

PARTS LIST

Note: The parts marked “∆” may cause undue microwave exposure.

The parts marked “*” are used in voltage more than 250V. "§" MARK: PARTS DELIVERY SECTION

REF. NO. PART NO. § DESCRIPTION Q'TY CODE

ELECTRIC PARTS

1- 1 FH-DZB012MRY0 M High voltage rectifier assembly 1 AK

*

1- 2 RC-QZA234WRE0 M High voltage capacitor 1 AP

*

1- 3 QFS-TA013WRE0 M Temperature fuse 150˚C (Magnetron) 1 AG
1- 4 RMOTDA211WRE0 M Turntable motor 1 AL
1- 5 RMOTDA214WRE0 M Stirrer motor 1 AQ
1- 6 RTHM-B005MRE0 M Thermal cut-out N.O. 60˚C (Hood Fan) 1 AG
1- 7 RTRN-B062MRE0 M Power transformer 1 BF

*

∆

1- 8 RV-MZA281WRE0 M Magnetron 1 BC

*

1- 9 QFSHDB003MRE0 M Fuse holder 1 AD
1-10 QSW-MA110WRE0 M Secondary interlock and door sensing switches 2 AE
1-11 FFS-BA016/KIT M Monitor switch with fuse assembly 1 AF
1-12 FACCDB011MRE0 M Power supply cord 1 AP
1-13 QSOCLB006MRE0 M Oven lamp socket 3 AE
1-14 FMOTEA366WRK0 M Hood fan motor 1 BE
1-15 RMOTEA346WRE0 M Fan motor 1 AR
1-16 RLMPTA068WRE0 M Oven lamp 3 AE
1-17 RTHM-A070WRE0 M Thermal cut-out 145˚C (Cavity) 1 AG
1-18 FDTCTA201WRK0 M AH sensor 1

CABINET PARTS

2- 1 LSTY-B021MRP0 M Rear stay 1 AF
2- 2 PDIF-B018MRF0 M Hood exhaust louver [R-1610] 1 AT
2- 2 PDIF-B019MRF0 M Hood exhaust louver [R-1611] 1 AT
2- 2 PDIF-B020MRF0 M Hood exhaust louver [R-1612] 1 AT
2- 3 GDAI-B055MRP0 M Right base plate 1 AM
2- 4 PCUSUB040MRP0 M Base cover cushion 1 AA
2- 5 GCABUB084MRP0 M Outer case cabinet [R-1610] 1 BA
2- 5 GCABUB090MRP0 M Outer case cabinet [R-1611] 1 BC
2- 5 GCABUB086MRP0 M Outer case cabinet [R-1612] 1 BC
2- 6 TMAPCB052MRR0 M Schematic diagram 1 AB
2- 7 FANGKB009MRY0 M Hood lamp glass assembly [R-1610] 1 AN
2- 7 FANGKB010MRY0 M Hood lamp glass assembly [R-1611] 1 AM
2- 7 FANGKB011MRY0 M Hood lamp glass assembly [R-1612] 1 AM
2-7-1 LANGQB016MRP0 M Hood lamp glass angle [R-1610] 1 AG
2-7-1 LANGQB020MRP0 M Hood lamp glass angle [R-1611] 1 AG
2-7-1 LANGQB027MRP0 M Hood lamp glass angle [R-1612] 1 AG
2-7-2 PGLSPB004MRE0 M Hood lamp glass 1 AH
2- 8 PCOVPB064MRT0 M Base cover [R-1610] 1 AY
2- 8 PCOVPB066MRT0 M Base cover [R-1611] 1 AY
2- 8 PCOVPB067MRT0 M Base cover [R-1612] 1 AY

CONTROL PANEL PARTS

3- 1 CPWBFB037MRU0 M Control unit 1
3- 1A QCNCMA447DRE0 M 4-pin connector CN-A 1 AA
3- 1B QCNCMA448DRE0 M 5-pin connector CN-B 1 AA
3- 1C QCNCMA275DRE0 J 2-pin connector CN-E 1 AB
3- 1D FW-VZA253DRE0 M Lead wire harness CN-C 1 AU
C1 RC-KZA087DRE0 J Capacitor 0.1 uF 50V 1 AB
C2 VCEAB31VW108M J Capacitor 1000 uF 35V 1 AF
C3 RC-KZA087DRE0 J Capacitor 0.1 uF 50V 1 AB
C4-5 VCEAB31VW106M J Capacitor 10 uF 35V 2 AB
C100 RC-QZB014MRE0 M Capacitor 7 uF 230V 1 AK
C110 RC-QZB019MRE0 M Capacitor 0.033 uF 250V 1 AC
D1-4 VHD11ES1///-1 J Diode (11ES1) 4 AB
D5-6 VHD1SS270A/-1 J Diode (1SS270A) 2 AA
D21-25 VHD1SS270A/-1 J Diode (1SS270A) 5 AA
Q1-2 VS2SB1238//-3 J Transistor (2SB1238) 2 AA
Q3 VSKRC243M//-3 J Transistor (KRC243M) 1 AB
R1 VRD-B12EF242J J Resistor 2.4k ohm 1/4W 1 AA
R2 VRD-B12HF681J J Resistor 680 ohm 1/2W 1 AA
R3 VRD-B12HF511J J Resistor 510 ohm 1/2W 1 AB
R4 VRD-B12EF270J J Resistor 27 ohm 1/4W 1 AB
R5 VRD-B12EF472J J Resistor 4.7k ohm 1/4W 1 AA
R6 VRD-B12EF332J J Resistor 3.3k ohm 1/4W 1 AA
R20 VRD-B12HF102J J Resistor 1k ohm 1/2W 1 AA
R110 VRS-A12HA470J J Resistor 47 ohm 1/2W 1 AH

20

REF. NO. PART NO. § DESCRIPTION Q'TY CODE

RY1-2 RRLY-A113DRE0 M Relay (DU24D1-1PR(M)) 2 AG
RY3-4 RRLY-B004MRE0 M Relay (FTR-F3AA024E) 2 AG
RY5 RRLY-A112DRE0 M Relay (VE24HSE-K) 1 AH
SSR1 RTR--A001DRE0 M Solid state relay 1 AG
SP1 RALM-A014DRE0 J Buzzer (PKM22EPT) 1 AG
T1 RTRNPB017MRE0 M Transformer 1 BE
VRS1 RH-VZA032DRE0 J Varistor (10G471K) 1 AE
ZD1 VHEHZ161///-1 J Zener diode (HZ-161) 1 AA
3- 2 FPNLCB263MRK0 M Control panel sub. assembly [R-1610] 1
3- 2 FPNLCB264MRK0 M Control panel sub, assembly [R-1611] 1
3- 2 FPNLCB265MRK0 M Control panel sub, assembly [R-1612] 1
3- 2-1 FUNTKB213MRE0 M Key unit [R-1610] 1
3- 2-1 FUNTKB214MRE0 M Key unit [R-1611] 1
3- 2-1 FUNTKB215MRE0 M Key unit [R-1612] 1
3- 2-2 GMADIB033MRF0 M Display window [R-1611] 1 AK
3- 2-2 GMADIB033MRF0 M Display window [R-1612] 1 AK
3- 2-2 GMADIB034MRR0 M Display window [R-1610] 1 AK
3- 2-3 XEPSD30P10XS0 M Screw; 3mm x 10mm 1 AB
3- 3 LHLD-B011MRF0 M LCD holder 1 AD
3- 4 PSHEPB027MRE0 M LED sheet 1 AF
3- 5 XEPSD30P10XS0 M Screw; 3mm x 10mm 2 AB

OVEN PARTS

4- 1 FFTA-B003MRK0 M Exhaust damper assembly 1 AH
4- 2 FROLPB025MRK0 M Turntable support assembly 1 AN
4- 3 NTNT-A090WRE0 M Turntable tray 1 AN
4- 4 LANGKB010MRP0 M Capacitor holder 1 BB
4- 5 FCOVPB016MRK0 M Stirrer cover assembly 1 AN
4- 6 FFAN-B010MRK0 M Stirrer fan assembly 1 AH
4- 7 ************* M Oven cavity (Not replaceable part) 1 --

∆

4- 8 PPACGB014MRF0 M Turntable motor packing 1 AA
4- 9 PHOK-B017MRF0 M Latch hook 1 AG

∆

4-10 LANGTB036MRP0 M Unit mounting plate 1 AP
4-11 NFANPB001MRE0 M Fan blade 1 AC
4-12 LBSHC0037WRE0 M Cord bushing 1 AB
4-13 PCOVPB065MRP0 M Oven lamp cover 1 AD
4-14 PDUC-B095MRP0 M Hood intake duct R 1 AM
4-15 PCUSUB039MRP0 M Hood intake duct cushion 1 AA
4-16 PFILWB005MRP0 M Lamp filter 1 AB
4-17 LANGTB046MRP0 M Chassis support left 1 AD
4-18 LANGTB040MRP0 M Chassis support right 1 AE
4-19 PDUC-B094MRF0 M Hood duct 1 AL
4-20 LHLD-B012MRF0 M Rack holder 4 AF
4-21 LSTPPB031MRF0 M Door stopper 1 AC
4-22 PCOVPB076MRF0 M Louver cover A [R-1610] 1 AG
4-23 PCOVPB077MRF0 M Louver cover B [R-1610] 1 AG
4-24 PCOVPB078MRF0 M Louver cover C [R-1610] 1 AG
4-25 PDUC-B098MRP0 M Magnetron air guide 1 AC

DOOR PARTS

∆

5- 1 FDORFB060MRT0 M Door panel assembly 1 AX

∆

5- 2 FCOV-B146MRK0 M Door frame assembly [R-1610] 1 BD

∆

5- 2 FCOV-B145MRK0 M Door frame assembly [R-1611] 1 BD

∆

5- 2 FCOV-B147MRK0 M Door frame assembly [R-1612] 1 BC

∆

5-2-1 PGLSPB012MRE0 M Front door glass [R-1610] 1 AQ

∆

5-2-1 PGLSPB014MRR0 M Front door glass [R-1611] 1 AQ

∆

5-2-1 PGLSPB013MRR0 M Front door glass [R-1612] 1 AQ
5-2-2 LSTPPB030MRF0 M Latch head 1 AC
5-2-3 LSTPPB032MRF0 M Glass stopper 1 AC
5-2-4 MSPRTA046WRE0 M Latch spring 1 AB

∆

5-2-5 GWAKPB105MRR0 M Door frame [R-1610] 1 AZ

∆

5-2-5 GWAKPB104MRR0 M Door frame [R-1611] 1 AZ

∆

5-2-5 GWAKPB106MRR0 M Door frame [R-1612] 1 AV

∆

5- 3 FCOVHB005MRK0 M Choke cover assembly 1 AH
5- 4 PSHEPB024MRE0 M Sealer film 1 AF
5- 5 FHNDPB002MRK0 M Door handle assembly [R-1610] 1 AL
5- 5 FHNDPB001MRK0 M Door handle assembly [R-1611] 1 AL
5- 5 FHNDPB003MRK0 M Door handle assembly [R-1612] 1 AL
5- 6 XCPSD40P08000 M Screw : 4mm x 8mm 4 AA
5- 7 XCPSD40P12000 M Screw : 4mm x 12mm 2 AA

R-1610
R-1611
R-1612

21

R-1610
R-1611
R-1612

REF. NO. PART NO. § DESCRIPTION Q'TY CODE

MISCELLANEOUS

6- 1 CFZK-B131MRK0 M Installation material assembly 1 AM
6-1-1 LBSHC0040MRE0 M Grommet 1 AC
6-1-2 LX-BZ0195WRE0 M Toggle screw 4 AC
6-1-3 LX-MZB001MRE0 M Cord holder 1 AB
6-1-4 XBRSD50P60000 M Screw : 5mm x 60mm 2 AC
6-1-5 XOTSD40P12000 M Screw : 4mm x 12mm 1 AA
6-1-6 XTSSD50P35000 M Screw : 5mm x 35mm 6 AA
6-1-7 XWHSD50-16300 M Washer 2 AA
6- 2 TINSEB177MRR0 M Installation instruction 1 AB
6- 3 TINSEB210MRR0 M Operation manual 1 AD
6- 4 TINSKB047MRR0 M Top template 1 AC
6- 5 TINSKB048MRR0 M Wall template 1 AB
6- 6 QW-QZB023MRE0 M High voltage wire A 1 AD

*

6- 7 FW-VZB145MRE0 M Main harness A 1 AU
6- 8 TCAUAA025WRR0 M Caution label 2 AA
6- 9 TCAUAB037MRR0 M Monitor caution label 1 AA
6-10 TCAUAB005MRR0 M DHHS caution label 1 AB
6-11 FW-VZB149MRE0 M Stop switch harness 1 AM
6-12 PFIL-B004MRE0 M Chacoal filter 1 AH
6-13 PFIL-B002MRE0 M Grease filter 2 AF
6-14 PCLICB003MRE0 M Canoe clip 1 AA
6-15 UAMI-B009MRM0 M Rack 1 AR
6-16 TLAB-B039MRR0 M Menu label 1
6-17 QW-VZB009MRE0 M Sensor ground wire 1

SCREWS,NUTS AND WASHERS

7- 1 XCPSD40P08000 M Screw : 4mm x 8mm 2 AA
7- 2 XOTSF40P12000 M Screw : 4mm x 12mm [R-1610] 4 AB
7- 2 XOTSE40P12000 M Screw : 4mm x 12mm [R-1611] 4 AA
7- 2 XOTSD40P12000 M Screw : 4mm x 12mm [R-1612] 4 AA
7- 3 XOTSD40P12000 M Screw : 4mm x 12mm 13 AA
7- 4 XBTSD40P08000 M Screw : 4mm x 8mm 2 AA
7- 5 LX-CZA038WRE0 M Special screw 4 AA
7- 6 LX-CZ0052WRE0 M Special screw 2 AA
7- 7 LX-BZ0081YBE0 M Screw : 4mm x 8mm 5 AA
7- 8 XCPSD30P08000 M Screw : 3mm x 8mm 2 AA
7- 9 LX-BZB012MRE0 M Unit mounting screw 2 AD
7-10 XCBSD30P08000 M Screw : 3mm x 8mm 3 AA
7-11 LX-BZA041WRE0 M Special screw 1 AA

HOW TO ORDER REPLACEMENT PARTS

To have your order filled promptly and correctly, please furnish the following information.

1. MODEL NUMBER 2. REF. NO. 3. PART NO. 4. DESCRIPTION

Order Parts from the authorized SHARP parts Distributor for your area.
Defective parts requiring return should be returned as indicated in the Service Policy.

22

R-1610
R-1611
R-1612

1

A

B

C

6-17

2

7-10

4-13

1-18

4-11

7-3

3

OVEN AND CABINET PARTS

1-14

4-19

7-3

7-4

1-15

7-1

1-17

4-17

1-16

1-5

45

7-3

4-1

2-1

7-3

7-5

7-3

4-10

2-5

4-12

1-12

2-6

1-13

7-8

1-3

6-10

6

A

B

7-5

C

D

E

2-2

4-6

F

6-14

G

H

1

7-9

4-7

4-24

x2

4-23

6-12

4-20

6-16

4-22

7-9

4-5

4-3

4-2

1-16

2

x2

4-20

4-16

4-8

6-13

1-13

2-7-2

2-7

3

7-2

1-4

7-10

4-25

7-7

7-7

4-9

1-10

1-9

1-10

4-4

7-11

6-9

7-6

1-8

6-8

6-8

1-7

1-6

7-8

2-3

1-1

2-8

2-4

7-3

6-13

7-2

2-7-1

45

1-11

7-3

1-2

D

4-18

7-3

E

4-14

F

4-15

G

H

6

23

R-1610
R-1611
R-1612

1

3-2-2

A

7-3

B

DOOR PARTS

C

5-2

2

3-2

3-4

3-2-1

3

3-3

3-2-3

5-6

5-1

45

CONTROL PANEL PARTS

3-1

3-5

4-21

5-4

5-3

5-6

6

A

B

C

D

E

F

G

5-2-5

6-1-1

5-5

5-2-1

6-1-4

6-1-5

6-1

5-2-4

5-2-2

5-2-3

5-7

MISCELLANEOUS

6-6

6-7

6-15

D

E

F

G

6-1-2

H

6-1-3

1

6-1-6

6-1-7

2

6-11

3

24

45

H

6

PACKING AND ACCESSORIES

4-3

DOOR PROTECTOR

SPADP0221MRE0

TURNTABLE TRAY

R-1610
R-1611
R-1612

TOP PAD
SPADBB026MRE0

6-15

RACK

RACK HOLDER

SPADFB047MRE0

6-1

INSTALL MATERIAL ASSEMBLY

6-3

OPERATION MANUAL

6-5

WALL TEMPLATE

INSTALLATION INSTRUCTION

6-2

6-4

TOP TEMPLATE

6-13

GREASE FILTER (x 2)



ACCESSORY HOLDER

SPADFB045MRE0

Non-replaceable items

WRAP COVER
SSAKH0103MRE0

DOOR PAD
SPADFA020WRE0

BOTTOM PAD
SPADBB025MRE0

PACKING CASE

SPAKCB233MRR12 [R-1610]
SPAKCB233MRR13 [R-1611]
SPAKCB233MRR14 [R-1612]

25

R-1610
R-1611
R-1612

COPYRIGHT © 1999 BY SHARP CORPORATION

ALL RIGHTS RESERVED.

No part of this publication may be repro­duced, stored in retrieval systems, or trans­mitted in any form or by any means, elec­tronic, mechanical, photocopying, record­ing, or otherwise, without prior written per­mission of the publisher.

26

'99 SHARP CORP. (5S2.530E) Printed in U.S.A