R-1600 R-1601 R-1602 SERVICE MANUAL

R-1600
R-1601
R-1602
SERVICE MANUAL
S4910R1600X//
OVER THE RANGE
MICROWAVE OVEN
MODELS
TURNTABLE
SENSOR DEFROST
BREAK FAST
POPCORN
1 Baked potatoes
2 Fresh vegetables
3 Frozen vegetables
4 Rice
5 Ground meat
6 Fish/Seafood
7 Chicken breasts
8 Turkey breast
9 Roast pork
0 Meat loaf
DINNER
2
7
4
9
3
8
CUSTOM
HELP
MINUTE
PLUS
1 Dinner plate
2 Pasta/casserole
3 Frozen entree
4 Frozen snack
5 Pizza, slice
LUNCH
1
6
HELP
OFF COOK
1 Coffee/tea
2 Roll/muffin, fresh
3 Roll/muffin, frozen
4 Hot cereal
5 Scrambled eggs
COMPU
DEFROST
MEMORY
COOK
5
0
POWER
LEVEL
TIMER
CLOCK
STOP
CLEAR
START
TOUCH ON
TURNTABLE
ON/OFF
WORK
LIGHT
NIGHT
LIGHT
FAN
HI/LO
R-1600
R-1601
R-1602
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..)
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 .......................................................................................................................................................... 7
TROUBLESHOOTING GUIDE ............................................................................................................................ 11
TEST PROCEDURE ............................................................................................................................................ 12
TOUCH CONTROL PANEL ASSEMBLY ............................................................................................................ 21
COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE ................................................................ 26
PICTORIAL DIAGRAM ........................................................................................................................................ 34
POWER UNIT CIRCUIT ...................................................................................................................................... 35
LSI UNIT CIRCUIT ............................................................................................................................................... 36
INDICATOR CIRCUIT .......................................................................................................................................... 37
PRINTED WIRING BOARD ................................................................................................................................. 38
PARTS LIST ........................................................................................................................................................ 39
PACKING AND ACCESSORIES ......................................................................................................................... 44
SHARP CORPORATION
This document has been published to be used for after
sales service only.
The contents are subject to change without notice.
R-1600
R-1601
R-1602
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.
R-1600
R-1601
R-1602
WARNING TO SERVICE PERSONNEL
Microwave ovens contain circuitry capable of producing very high voltage and current, contact with
following parts may result in a severe, possibly
fatal, electrical shock.
(Example)
High Voltage Capacitor, High Voltage Power Transformer, Magnetron, High Voltage Rectifier Assembly, High Voltage Harness etc..
Read the Service Manual carefully and follow all
instructions.
Don't Touch !
Danger High Voltage
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.
Before Servicing
1. Disconnect the power supply cord
remove outer case.
2. Open the door and block it open.
3. Discharge high voltage capacitor.
, and then
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.
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.
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.
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-1600
R-1601
R-1602
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-1600
R-1601
R-1602
SERVICE MANUAL
PRODUCT DESCRIPTION
OVER THE RANGE
MICROWAVE OVEN
R-1600 / R-1601 / R-1602
GENERAL INFORMATION
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-1600, R-1601,
R-1602.
It is recommended that service personnel carefully study the entire
text of this 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
OPERATION
TROUBLESHOOTING GUIDE AND
TEST PROCEDURE
TOUCH CONTROL PANEL
COMPONENT REPLACEMENT
AND ADJUSTMENT PROCEDURE
WIRING DIAGRAM
PARTS LIST
R-1600
R-1601
R-1602
PRODUCT SPECIFICATION
ITEM
DESCRIPTION
Power Requirements
120 Volts / 14 Amperes
60 Hertz
Single phase, 3 wire grounded
Power Output
1.6 Cubic Feet
1000 watts (IEC-705 TEST PROCEDURE)
Operating frequency of 2450MHz
Width 29-15/16"
Height 16-3/8"
Depth 15- 1/16" (Not including the door handle)
Width 21"
Height 8-7/8"
Depth 14-7/16"
Hood lamp
Hood fan
2 bulbs, 20W x 2, Incandescent light bulbs
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
Case Dimensions
Cooking Cavity Dimensions
CUSTOM HELP pad, BREAKFAST pad, LUNCH pad, DINNER pad
POPCORN pad, COMPU DEFROST pad, MEMORY COOK pad
Number selection pads, POWER LEVEL pad, TIMER / CLOCK pad
MINUTE PLUS pad, TURNTABLE ON / OFF pad, START / TOUCH ON pad
WORK LIGHT pad, NIGHT LIGHT pad, FAN HI / LO pad, STOP/CLEAR 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.
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.
4
R-1600
R-1601
R-1602
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
OVEN DIAGRAM
9
9
1
8
3
5
7
14
2
6
4
12
13
10
11
1.
2.
3.
4.
5.
Oven door with see-through window.
Door hinges.
Stirrer cover.
Turntable motor shaft.
Oven lamp.
It will light when oven is operating or door is open.
6. Door latches.
The oven will not operate unless the door is securely closed.
7. Auto-Touch control panel.
5
8. Time display: Digital display, 99 minutes 99 seconds.
9. Ventilation openings.
10. Light Cover.
11. Grease filters.
12. Removable turntable.
The turntable will rotate clockwise or counterclockwise.
Only remove for cleaning.
13. Removable turntable support.
14. Power supply cord
R-1600
R-1601
R-1602
CONTROL PANEL
DEFROST TURNTABLE OFF COOK HELP
BREAKFAST
1 Coffee/tea
2 Rolls/muffins, fresh
3 Rolls/muffins, frozen
4 Hot cereal
5 Scrambled eggs
LUNCH
1 Dinner plate
2 Pasta/casserole
3 Frozen entrees
4 Frozen snacks
5 Pizza, slice
DINNER
1 Baked potatoes
2 Fresh vegetables
3 Frozen vegetables
4 Rice
5 Ground meat
6 Fish/seafood
7 Chicken breasts
8 Turkey breast
9 Roast pork
0 Meat loaf
1
6
2
7
3
8
CUSTOM
HELP
MINUTE
PLUS
4
9
POPCORN
COMPU
DEFROST
MEMORY
COOK
5
0
POWER
LEVEL
TIMER
CLOCK
STOP
CLEAR
START
TOUCH ON
TURNTABLE
ON/OFF
WORK
LIGHT
NIGHT
LIGHT
FAN
HI/LO
6
R-1600
R-1601
R-1602
OPERATION
DESCRIPTION OF OPERATING SEQUENCE
of the secondary interlock switch and primary interlock
relay (RY2) and is mechanically associated with the door
so that it will function in the following sequence.
(1) When the door opens from a closed position, the
primary interlock relay and secondary interlock switch
open their contacts, and then the monitor switch
contacts close.
(2) When the door is closed from the open position, the
monitor switch contacts first open, and then the
contacts of the secondary interlock switch and door
sensing switch close.
If the secondary interlock switch and primary interlock relay
(RY2) fail with their contacts closed when the door is
opened, the closing of the monitor switch contacts will form
a short circuit through the monitor fuse, secondary interlock
switch and primary interlock relay (RY2), causing the monitor fuse to blow.
The following is a description of component functions during
oven operation.
OFF CONDITION
Closing the door activates the door sensing switch and
secondary interlock switch. (In this condition, the monitor
switch contacts are opened.)
When oven is plugged in, 120 volts A.C. is supplied to the
control unit. (Figure O-1).
1. The display will show "SHARP SIMPLY THE BEST
PRESS CLEAR AND PRESS CLOCK".
To set any program or set the clock, you must first touch
the STOP/CLEAR pad. The display will clear, and " : "
will appear .
COOKING CONDITION
Program desired cooking time touching the NUMBER pads.
When the START pad is touched, the following operations
occur:
POWER LEVEL P-0 TO P-90 COOKING
When Variable Cooking Power is programmed, the 120
volts A.C. is supplied to the power transformer intermittently
through the contacts of relay (RY2) which is operated by the
control unit within an interval second time base. Microwave
power operation is as follows:
1. The contacts of relays are closed and components
connected to the relays are turned on as follows.
(For details, refer to Figure O-2)
RELAY
RY1
RY2
RY3
RY4
CONNECTED COMPONENTS
Oven lamp / Fan motor / Stirrer motor
Power transformer
Turntable motor
Hood fan motor
VARI-MODE
ON TIME
Power 10(P-HI)
32 sec.
(100% power)
Power 9(P-90)
30 sec.
(approx. 90% power)
Power 8(P-80)
26 sec.
(approx. 80% power)
Power 7(P-70)
24 sec.
(approx. 70% power)
Power 6(P-60)
22 sec.
(approx. 60% power)
Power 5(P-50)
18 sec.
(approx. 50% power)
Power 4(P-40)
16 sec.
(approx. 40% power)
Power 3(P-30)
12 sec.
(approx. 30% power)
Power 2(P-20)
8 sec.
(approx. 20% power)
Power 1(P-10)
6 sec.
(approx. 10% power)
Power 0(P-0)
0 sec.
(0% power)
2. 120 volts A.C. is supplied to the primary winding of the
power transformer and is converted to about 3.3 volts
A.C. output on the filament winding, and approximately
2000 volts A.C. on the high voltage winding.
3. The filament winding voltage heats the magnetron
filament and the H.V. winding voltage is sent to a voltage
doubler circuit.
4. The microwave energy produced by the magnetron is
channelled through the waveguide into the cavity feedbox, and then into the cavity where the food is placed to
be cooked.
5. Upon completion of the cooking time, the power
transformer, oven lamp, etc. are turned off, and the
generation of microwave energy is stopped. The oven
will revert to the OFF condition.
6. When the door is opened during a cook cycle, monitor
switch, door sensing switch, secondary interlock switch
and primary interlock relay are activated with the following
results. The circuits to the stirrer motor, the cooling fan
motor, the turntable motor, and the high voltage
components are de-energized, and the digital read-out
displays the time still remaining in the cook cycle when
the door was opened.
7. The monitor switch is electrically monitoring the operation
OFF TIME
0 sec.
2 sec.
6 sec.
8 sec.
10 sec.
14 sec.
16 sec.
20 sec.
24 sec.
26 sec.
32 sec.
Note: The ON/OFF time ratio does not correspond with
the percentage of microwave power, because
approx. 2 seconds are needed for heating of the
magnetron filament.
7
R-1600
R-1601
R-1602
BREAKFIRST, LUNCH, DINNER
3. RE-CIRCULATION (INSIDE VENTING)
The air handing is the same as VERTICAL VENTING
except that the final air discharge is directed horizontally
through the upper front of the oven into the kitchen. IN
this case, the accessory charcoal filter RK-230 must be
provided to filter the air before it leaves the oven.
BREAKFIRST, LUNCH, DINNER will automatically compute the microwave power and cooking time. Set the desired
program by touching one of the BREAKFIRST, LUNCH,
DINNER pads, and number pad to select menu. Enter the
weight or quantity by touching the Number pads. When the
START pad is touched, the following operations occur:
1. The COOK indicator will light.
2. The cooking time will appear on the display and start
counting down to zero. The cooking time is adjusted
automatically according to the weight of the food.
3. The shut-off relays (RY1, RY2 and RY3) are energized,
turning on the oven lamp, turntable motor, cooling fan
motor and convection motor. The power supply voltage
is applied to the heating element.
4. Now, the oven is in the microwave cooking mode.
_: AIR FLOW
HOOD FAN MOTOR
HOOD
INTAKE
DUCT
COMPU DEFROST COOKING
The COMPU DEFROST key is a special function key to
defrost meats and poultry faster and better. COMPU DEFROST automatically defrosts roast beef, etc.. Touch the
COMPU COOK pad and number pad to select menu and
enter the food weight by touching the number pads. When
the START pad is touched, the oven will cook according to
the special cooking sequence.
VENTILATION METHODS HOT AIR EXHAUST
1. VERTICAL VENTING
For this venting method, hot air rising from the
conventional range below is drawn in by the hood fan
motor through the grease filters at the right and left sides
of the base cover, up through the right and left sides of
the oven cavity, then discharged vertically at rear center
top of the oven, into the customer's vent system.
_: AIR FLOW
TO DUCT
TO DUCT
HOOD EXHAUST
LOUVER
HOOD FAN MOTOR
HOOD
INTAKE
DUCT
GREASE
FILTER
2. HORIZONTAL VENTING
The air handing is the same as VERTICAL VENTING
except that the final air discharge is directed horizontally
out from the top rear of the oven into the customer's vent
system.
_: AIR FLOW
HOOD FAN MOTOR
TO DUCT
HOOD
INTAKE
DUCT
GREASE
FILTER
8
CHARCOAL
FILTER
R-1600
R-1601
R-1602
MAGNETRON
TEMPERATURE FUSE
CONTROL UNIT
COM.
N.O.
RY4
HOOD FAN
THERMAL
CUT OUT
RY5
High
B3
N.C.
GRN
B1
Low
E2
HOOD
CAPACITOR
A3
B9
A7
N.O.
TTM
HOOD
LAMP
HL
A5
HL
FAN
MOTOR
A1
TURNTABLE
MOTOR
HOOD
MOTOR
RY1
FM
DOOR
SENSING
SWITCH
RY2
HIGH VOLTAGE
CAPACITOR
0.94µF
COM.
OL
STIRRER
MOTOR
RY3
OVEN LAMP
120 V AC. GND
60 Hz
WHT
POWER
TRANSFORMER
E1
SSR
BLK
B5
MONITOR
SWITCH
B7
PRIMARY
INTERLOCK
RELAY
FUSE
20A
STM
MAGNETRON
CAVITY
THERMAL CUT-OUT
SCHEMATIC
NOTE: CONDITION OF OVEN
1. DOOR CLOSED
2. CLOCK APPEARS ON DISPLAY
HIGH VOLTAGE
RECTIFIER
SECONDARY
INTERLOCK
SWITCH
Figure O-1. Oven Schematic-Off Condition
SCHEMATIC
NOTE: CONDITION OF OVEN
1. DOOR CLOSED
2. COOKING TIME PROGRAMMED
3. VARIABLE COOKING CONTROL "HIGH"
4. "START" PAD TOUCHED
CAVITY
THERMAL CUT-OUT
MAGNETRON
TEMPERATURE FUSE
CONTROL UNIT
COM.
N.O.
RY4
RY5
B3
E1
N.C.
GRN
B1
Low
E2
HOOD
CAPACITOR
A1
A3
B9
A5
N.O.
TTM
HOOD
LAMP
HL
A7
HL
FAN
MOTOR
HOOD
MOTOR
RY1
FM
DOOR
SENSING
SWITCH
RY2
HIGH VOLTAGE
CAPACITOR
0.94µF
COM.
OL
STIRRER
MOTOR
RY3
OVEN LAMP
120 V AC. GND
60 Hz
WHT
POWER
TRANSFORMER
STM
SECONDARY
INTERLOCK
SWITCH
Figure O-2. Oven Schematic-Cooking Condition
9
HIGH VOLTAGE
RECTIFIER
MAGNETRON
High
TURNTABLE
MOTOR
HOOD FAN
THERMAL
CUT OUT
SSR
BLK
B5
MONITOR
SWITCH
B7
PRIMARY
INTERLOCK
RELAY
FUSE
20A
R-1600
R-1601
R-1602
DESCRIPTION AND FUNCTION OF COMPONENTS
DOOR OPEN MECHANISM
CAUTION: BEFORE REPLACING A BLOWN MONITOR
FUSE TEST THE DOOR SENSING SWITCH,
PRIMARY INTERLOCK RELAY (RY2), SECONDARY INTERLOCK SWITCH AND MONITOR SWITCH FOR PROPER OPERATION.
(REFER TO CHAPTER "TEST PROCEDURE").
NOTE: MONITOR FUSE AND SWITCH ARE REPLACED
AS AN ASSEMBLY
The door is opened by pulling the door handle, refer to the
Figure D-1.
Latch
Hook
Latch
Heads
Door
Sensing
Switch
TEMPERATURE FUSE (MG)
The temperature fuse located near the waveguide is
designed to prevent damage to the magnetron if an over
heated condition develops in the tube due to cooling fan
failure, obstructed air guide, dirty or blocked air intake, etc.
Under normal operation, the temperature fuse remains
closed. However, the temperature fuse will open at 302˚F
(150˚C) causing the oven to shut down.
Monitor
Fuse
Door
Monitor
Switch
Secondary
Interlock
Switch
Figure D-1. Door Open Mechanism
THERMAL CUT-OUT (HOOD )
This thermal cut-out located on the right base plate. It is
designed to automatically turn on the hood fan motor
whenever the hot air rising from the conventional range
below causes the temperature at the thermal cut-out to rise
to 140˚F (60˚C) or higher, thus removing this hot air from
around microwave oven. When the temperature around the
thermal cut-out drops to 113˚F (45˚C) or lower, the thermal
cut-out shuts off the hood fan motor.
DOOR SENSING AND SECONDARY INTERLOCK
SWITCHES
The secondary interlock switch is mounted in the lower
position of the latch hook and the door sensing switch in the
primary interlock system is mounted in the upper position of
the latch hook. They are activated by the latch heads on the
door. When the door is opened, the switches interrupt the
circuit to all components. A cook cycle cannot take place
until the door is firmly closed thereby activating both interlock switches. The primary interlock system consists of the
door sensing switch and primary interlock relay located on
the control circuit board.
THERMAL CUT-OUT (CAVITY )
This thermal cut-out is located on the top of the oven cavity.
It is designed to prevent damage to the oven unit if the food
in the oven catches fire due to overheating produced by
improper setting of cooking time or failure of control unit.
Under normal operation, the thermal cut-out remains closed.
However, the thermal cut-out will open at 293˚F (145˚C)
causing the oven to shut down.
MONITOR SWITCH
The monitor switch is activated (the contacts opened) by the
latch head on the door while the door is closed. The switch
is intended to render the oven inoperative by means of
blowing the monitor fuse when the contacts of the primary
interlock relay (RY2) and secondary interlock switch fail to
open when the door is opened.
TURNTABLE MOTOR
The turntable motor rotates the turntable located on the
bottom of the oven cavity, so that the foods on the turntable
cook evenly during cooking. Turntable will turn in either
direction. The turntable motor can be turned off by touching
TURNTABLE ON/OFF pad.
Functions:
1. When the door is opened, the monitor switch contact
close (to the ON condition) due to their being normally
closed. At this time the primary interlock relay (RY2) and
secondary interlock switch are in the OFF condition
(contacts open) due to their being normally open contact
switches. And the contacts of relay (RY1) are in the ON
condition (contacts close).
2. As the door goes to a closed position, the monitor switch
contacts are first opened and then the door sensing
switch and the secondary interlock switch contacts close.
(On opening the door, each of these switches operate
inversely.)
3. If the door is opened, and the primary interlock relay
(RY2) and secondary interlock switch contacts fail to
open, the monitor fuse blows simultaneously with closing
of the monitor switch contacts.
COOLING FAN MOTOR
The cooling fan motor drives a blade which draws external
cool air. This cool air is directed through the air vanes
surrounding the magnetron and cools the magnetron. This air
is channelled through the oven cavity to remove steam and
vapors given off from the heating foods. It is then exhausted
through the exhausting air vents at the oven cavity.
HOOD FAN MOTOR
The hood fan motor is a two-speed, single-phase, double
pole induction type, requiring a hood fan capacitor. It is
located outside the upper rear part of the oven cavity, is to
remove, from around the oven, hot air rising from the
conventional electric or gas range over which it is installed.
10
R-1600
R-1601
R-1602
HOOD LAMP
This air is then expelled either vertically or horizontally
through the customer supplied duct system, or discharged
back into the kitchen.
The hood lamps are mounted at the hood lamp angle on the
base cover. The hood lamps can be turned off and on by
touching the WORK LIGHT pad or the NIGHT LIGHT pad.
And also the brightness can be varied to high or low by
touching the WORK LIGHT pad or the NIGHT LIGHT pad.
STIRRER MOTOR
The stirrer motor drives the stirrer fan to stir the microwave
radiation from the waveguide.
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.
11
12
MICROWAVE
COOKING
CONDITION
IDLE
CONDITION
POSSIBLE CASE AND
DEFECTIVE PARTS
OFF
CONDITION
E
Home fuse blows when power cord is plugged into wall receptacle.
Monitor fuse blows when power cord is plugged into wall receptacle.
Display does not illuminate when power cord is first plugged into wall
receptacle.
Display does not operate properly when STOP/CLEAR key is touched.
(The time of day should appear on the display with beep sound during
normal condition.)
Oven lamp does not light with door is opened.
Hood fan motor operates when power cord is first plugged into wall
receptacle.
Temperature of oven base seems more than 140˚F (60˚C) because of
operation of the range below. But hood fan motor does not turn on
automatically. (Normally, food fan motor should be operating at low
speed.)
Hood lights do not turn on when WORK LIGHT pad or NIGHT LIGHT pad
is pressed.
Hood fan motor does not rotate at all with touched FAN HI/LO pad.
Speed of the hood fan motor does not change when the FAN HI/LO pad is
touched for this function.
Oven lamp does not light in cook cycle. (But it does light when door is
opened.)
Fan motor does not operate. (Oven lamp and turntable motor operate.)
Turntable motor does not operate (Oven lamp lights and fan motor
operate.)
Oven does not go into cook cycle when START pad is touched
Oven seems to be operating but little or no heat is produced in oven 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).
Variable cooking does not operate properly except Cooking Power 10 (PHI) mode.
Function of COMPU DEFROST does not operate properly.
Stirrer motor does not operate. (Other parts operate.)
Oven goes into COMPU DEFROST but food is not defrosted well.
D
C
B
A
PROBLEM
M
L
K
J
I
H
CONDITION
TEST PROCEDURE
R-1600
R-1601
R-1602
CK = Check / RE = Replace
CK LOW VOLTAGE
CK NO POWER AT OUTLET
CK OPENED OR SHORTED WIRING
RE SHORTED IN POWER CORD
CK HOOD MOTOR CAPACITOR
RE HOOD LAMP OR SOCKET
CK TURNTABLE OFF CONDITION
RE STIRRER MOTOR
RE TURNTABLE MOTOR
RE FAN MOTOR
RE OVEN LAMP OR SOCKET
P FOIL PATERN ON P.W.B.
O COMPU DEFROST
N RELAY (RY-5)
N RELAY (RY-4)
N RELAY (RY-3)
N RELAY (RY-2)
N RELAY (RY-1)
KEY UNIT
CONTROL UNIT
HOOD FAN MOTOR
HOOD HERMAL CUT-OUT
MONITOR FUSE
MONITOR SWITCH
G PRIMARY INTERLOCK SYSTEM
F SECONDARY INTERLOCK SWITCH
TEMPERATURE FUSE OR THERMAL CUT-OUT
HIGH VOLTAGE CAPACITOR
H.V. RECTIFIER
POWER TRANSFORMER
MAGNETRON
R-1600
R-1601
R-1602
TEST PROCEDURES
PROCEDURE
LETTER
A
COMPONENT TEST
MAGNETRON ASSEMBLY TEST
1.
2.
3.
4.
5.
6.
7.
8.
9.
Disconnect the power supply cord, and then remove outer case.
Open the door and block it open.
Discharge high voltage capacitor.
To test for an open filament, isolate the magnetron from the high voltage circuit. A continuity check
across the magnetron filament leads should indicate less than 1 ohm.
To test for a shorted magnetron, connect the ohmmeter leads between the magnetron filament leads
and chassis ground. This test should indicate an infinite resistance. If there is little or no resistance
the magnetron is grounded and must be replaced.
Reconnect all leads removed from components during testing.
Reinstall the outer case (cabinet).
Reconnect the power supply cord after the outer case is installed.
Run the oven and check all functions.
MICROWAVE OUTPUT POWER
The following test procedure should be carried out with the microwave oven in a fully assembled
condition (outer case fitted).
HIGH VOLTAGES ARE PRESENT DURING THE COOK CYCLE, SO EXTREME CAUTION SHOULD
BE OBSERVED.
Power output of the magnetron can be measured by performing a water temperature rise test. This test
should only be used if above tests do not indicate a faulty magnetron and there is no defect in the following
components or wiring: silicon rectifier, high voltage capacitor and power transformer. This test will require
a 16 ounce (453cc) measuring cup and an accurate mercury thermometer or thermocouple type
temperature tester. For accurate results, the following procedure must be followed carefully:
1. Fill the measuring cup with 16 oz. (453cc) of tap water and measure the temperature of the water with
a thermometer or thermocouple temperature tester. Stir the thermometer or thermocouple through
the water until the temperature stabilizes. Record the temperature 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 temperature is recorded.
4. Subtract the cold water temperature from the hot water temperature. The normal result should be 29.2
to 54.2˚F(16.2 to 30.1˚C) rise in temperature. If the water temperatures are accurately measured and
tested for the required time period the test results will indicate if the magnetron tube has low power
output (low rise in water temperature) which would extend cooking time or high power output (high
rise in water temperature) which would reduce cooking time. Because cooking time can be adjusted
to compensate for power output, the magnetron tube assembly should be replaced only if the water
temperature rise test indicates a power output well beyond the normal limits. The test is only accurate
if the power supply line voltage is 120 volts and the oven cavity is clean.
B
POWER TRANSFORMER TEST
1.
2.
3.
4.
5.
6.
7.
8.
Disconnect the power supply cord, and then remove outer case.
Open the door and block it open.
Discharge high voltage capacitor.
Disconnect the primary input terminals and measure the resistance of the transformer with an
ohmmeter. Check for continuity of the coils with an ohmmeter. On the R x 1 scale, the resistance of
the primary coil should be less than 1 ohm and the resistance of the high voltage coil should be
approximately 83.2 ohms; the resistance of the filament coil should be less than 1 ohm.
Reconnect all leads removed from components during testing.
Reinstall the outer case (cabinet).
Reconnect the power supply cord after the outer case is installed.
Run the oven and check all functions.
13
R-1600
R-1601
R-1602
TEST PROCEDURES
PROCEDURE
LETTER
COMPONENT TEST
(HIGH VOLTAGES ARE PRESENT AT THE HIGH VOLTAGE TERMINAL, SO DO NOT ATTEMPT TO
MEASURE THE FILAMENT AND HIGH VOLTAGE.)
C
HIGH VOLTAGE RECTIFIER TEST
1.
2.
3.
4.
Disconnect the power supply cord, and then remove outer case.
Open the door and block it open.
Discharge high voltage capacitor.
Isolate the rectifier from the circuit. Using the highest ohm scale of the meter, read the resistance
across the terminals and observe, reverse the leads to the rectifier terminals and observe meter
reading. If a short is indicated in both directions, or if an infinite resistance is read in both directions,
the rectifier is probably defective and should be replaced.
5. Reconnect all leads removed from 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.
NOTE: Be sure to use an ohmmeter that will supply a forward bias voltage of more than 6.3 volts.
D
HIGH VOLTAGE CAPACITOR TEST
1.
2.
3.
4.
5.
6.
7.
8.
E
Disconnect the power supply cord, and then remove outer case.
Open the door and block it open.
Discharge high voltage capacitor.
If the capacitor is open, no high voltage will be available to the magnetron. Disconnect input leads
and check for short or open between the terminals using an ohmmeter.
Checking with a high ohm scale, if the high voltage capacitor is normal, the meter will indicate
continuity for a short time and should indicate an open circuit once the capacitor is charged. If the
above is not the case, check the capacitor with an ohmmeter to see if it is shorted between either of
the terminals and case. If it is shorted, replace the capacitor.
Reconnect all leads removed from components during testing.
Reinstall the outer case (cabinet).
Reconnect the power supply cord after the outer case is installed.
Run the oven and check all functions.
CAVITY THERMAL CUT-OUT TEST
1.
2.
3.
4.
5.
6.
7.
8.
Disconnect the power supply cord, and then remove outer case.
Open the door and block it open.
Discharge high voltage capacitor.
A continuity check across the thermal cut-out terminals should indicate a closed circuit unless the
temperature of the thermal cut-out reaches approximately 293˚F(145˚C).
An open thermal cut-out indicates overheating of the oven, exchange the oven thermal cut-out and
check inside of oven cavity and for improper setting of cooking time or operation of control unit. Check
for restricted air flow through the vent holes of the oven cavity, especially the cooling fan and air guide.
Reconnect all leads removed from components during testing.
Reinstall the outer case (cabinet).
Reconnect the power supply cord after the outer case is installed.
Run the oven and check all functions.
MAGNETRON TEMPERATURE FUSE TEST
1.
2.
3.
4.
Disconnect the power supply cord, and then remove outer case.
Open the door and block it open.
Discharge high voltage capacitor.
A continuity check across the temperature fuse terminals should indicate a closed circuit. If the
temperature of the magnetron reaches approximately 302˚F(150˚C), the temperature fuse opens. An
open temperature fuse indicates overheating of the magnetron. Check for restricted air flow to the
magnetron, especially the cooling fan air guide.
5. Reconnect all leads removed from components during testing.
14
R-1600
R-1601
R-1602
TEST PROCEDURES
PROCEDURE
LETTER
COMPONENT TEST
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.
CAUTION: IF THE THERMAL CUT-OUT OR TEMPERATURE FUSE INDICATES AN OPEN CIRCUIT
AT ROOM TEMPERATURE, REPLACE THERMAL CUT-OUT OR TEMPERATURE FUSE.
F
SECONDARY INTERLOCK SWITCH TEST
1.
2.
3.
4.
5.
6.
7.
8.
G
Disconnect the power supply cord, and then remove outer case.
Open the door and block it open.
Discharge high voltage capacitor.
Isolate the switch and connect the ohmmeter to the common (COM.) and normally open (NO) terminal
of the switch. The meter should indicate an open circuit with the door open and a closed circuit with
the door closed. If improper operation is indicated, replace the secondary interlock switch.
Reconnect all leads removed from components during testing.
Reinstall the outer case (cabinet).
Reconnect the power supply cord after the outer case is installed.
Run the oven and check all functions.
PRIMARY INTERLOCK SYSTEM TEST
DOOR SENSING SWITCH
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. Isolate the switch and connect the ohmmeter to the common (COM.) and normally open (NO) terminal
of the switch. The meter should indicate an open circuit with the door open and a closed circuit with
the door closed. If improper operation is indicated, replace the door sensing switch.
5. Reconnect all leads removed from 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.
NOTE: If the door sensing switch contacts fail in the open position and the door is closed, the cooling
fan motor, stirrer motor and oven light will be activated by RY1.
PRIMARY INTERLOCK RELAY (RY2)
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 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. 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.
H
MONITOR SWITCH TEST
1.
2.
3.
4.
Disconnect the power supply cord, and then remove outer case.
Open the door and block it open.
Discharge high voltage capacitor.
Before performing this test, make sure that the secondary interlock switch and the primary interlock
relay are operating properly, according to the above Switch Test Procedure. Disconnect the wire lead
from the monitor switch (COM) terminal. Check the monitor switch operation by using the ohmmeter
as follows. When the door is open, the meter should indicate a closed circuit. When the monitor switch
actuator is pushed by a screw driver through the lower latch hole on the front plate of the oven cavity
15
R-1600
R-1601
R-1602
TEST PROCEDURES
PROCEDURE
LETTER
COMPONENT TEST
5.
6.
7.
8.
with the door opened (in this condition the plunger of the monitor switch is pushed in), the meter should
indicate an open circuit. If improper operation is indicated, the switch may be defective. After testing
the monitor switch, reconnect the wire lead to the monitor switch (COM) terminal and check the
continuity of the monitor circuit.
Reconnect all leads removed from components during testing.
Reinstall the outer case (cabinet).
Black
Reconnect the power supply cord after
White /White
the outer case is installed.
Run the oven and check all functions.
Screw Driver
Secondary
Interlock
Switch
I
Monitor
Switch
Ohmmeter
BLOWN MONITOR FUSE TEST
1.
2.
3.
4.
Disconnect the power supply cord, and then remove outer case.
Open the door and block it open.
Discharge high voltage capacitor.
If the monitor fuse is blown when the door is opened, check the primary interlock relay, secondary
interlock switch and monitor switch according to the "TEST PROCEDURE" for those switches before
replacing the blown monitor fuse.
CAUTION: BEFORE REPLACING A BLOWN MONITOR FUSE, TEST THE PRIMARY INTERLOCK
RELAY, 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-BA016/KiT, even if
the monitor switch operates normally. The monitor fuse and monitor switch assembly is comprised
of a 20 ampere fuse and switch.
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.
J
HOOD THERMAL CUT-OUT TEST
1.
2.
3.
4.
5.
6.
7.
8.
K
Disconnect the power supply cord, and then remove outer case.
Open the door and block it open.
Discharge high voltage capacitor.
A continuity check across the thermal cut-out terminals should indicate an open circuit unless the
temperature of the thermal cut-out reaches approximately 140˚F(60˚C) or more. At that temperature,
the contacts will close. The thermal cut-out opens automatically at approximately 113˚F(45˚C).
Reconnect all leads removed from components during testing.
Reinstall the outer case (cabinet).
Reconnect the power supply cord after the outer case is installed.
Run the oven and check all functions.
HOOD FAN MOTOR TEST
1.
2.
3.
4.
Disconnect the power supply cord, and then remove outer case.
Open the door and block it open.
Discharge high voltage capacitor.
If the motor does not turn, touch the FAN HI / LO pad once (set hood fan motor power "HIGH") and
check voltage between pins "1" and "2" (Blue and Black wires) of the 6 pin connector. If 120 Volts
appear and the hood capacitor is good, replace the hood fan assembly. If 120 Volts does not appear,
check the motor circuit. The resistance values of motor terminals are as follows:
16
R-1600
R-1601
R-1602
TEST PROCEDURES
PROCEDURE
LETTER
COMPONENT TEST
YLW
4
1
HOOD FAN
CAPACITOR
32 Ω
5
Resistance between;
BLU
45 Ω
20 Ω
BLU (1)
BLK (2)
BLU (1)
BLK (2)
WHT (3)
AND
AND
AND
AND
AND
YLW (4) =
YLW (4) =
BLK (2) =
WHT (3) =
RED (5) =
BLU BLK WHT
1
2
3
2
BLK
RED
3
0Ω (Shorted)
32Ω
32Ω
20Ω
45Ω
6-PIN CONNECTOR
OF HOOD FAN MOTOR
WHT
5.
6.
7.
8.
L
Reconnect all leads removed from components during testing.
Reinstall the outer case (cabinet).
Reconnect the power supply cord after the outer case is installed.
Run the oven and check all functions.
4
5
YLW RED
TOUCH CONTROL PANEL ASSEMBLY TEST
The touch control panel consists of circuits including semiconductors such as LSI, ICs, etc. Therefore,
unlike conventional microwave ovens, proper maintenance cannot be performed with only a voltmeter
and ohmmeter.
In this service manual, the touch control panel assembly is divided into two units, Control Unit and Key
Unit, and also the Control Unit is divided into two units, LSI Unit and Power Unit, and troubleshooting by
unit replacement is described according to the symptoms indicated.
Before testing,
1) Disconnect the power supply cord, and then remove outer case. Refer to procedure of "HOOD
EXHAUST LOUVER REMOVAL", "REMOVAL OF OVEN FROM WALL" and "OUTER CASE
REMOVAL".
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, re-connect the power supply cord.
1. Key Unit.
NOTE ;
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) Check key unit ribbon connection before replacement.
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.
The following symptoms indicate a defective key unit.
a) When touching the pads, a certain pad produces no signal at all.
b) When touching a number pad, two figures or more are displayed.
c) When touching the pads, sometimes a pad produces no signal.
If the key unit is defective.
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) Replace the key unit.
5) Reconnect all leads removed from components during testing.
17
R-1600
R-1601
R-1602
TEST PROCEDURES
PROCEDURE
LETTER
COMPONENT TEST
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.
2. Control Unit.
The following symptoms indicate a defective control unit. Before replacing the control unit, perform
the Key unit test (Procedure M) to determine if control unit is faulty.
2-1 In connection with pads.
a) When touching the pads, a 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 indicators do not light up.
g) The figure of all digits flicker.
2-3 Other possible problems caused by defective control unit.
a) Buzzer does not sound or continues to sound.
b) Clock does not operate properly.
c) Cooking is not possible.
When 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 all leads removed from components during testing.
5) Re-install the outer case (cabinet).
6) Reconnect the power supply cord after the outer case is installed.
7) Run the oven and check all functions.
KEY UNIT TEST
1.
2.
3.
4.
5.
6.
7.
8.
Disconnect the power supply cord, and then remove outer case.
Open the door and block it open.
Discharge high voltage capacitor.
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.
G8
G7
G6
G5
G4
G3
G2
G1
Reconnect all leads removed from
components during testing.
5
4
3
2
1
Re-install the outer case (cabinet).
0
9
8
7
6
Reconnect the power supply cord
CLOCK TURNTABLE
START
COMPU
NIGHT
MINUTE
after the outer case is installed.
DEFROST
LIGHT
ON / OFF TOUCH ON
PLUS
TIMER
Run the oven and check all functions.
STOP
MEMORY
WORK
POWER
FAN
POPCORN
G14 G13 G12 G11 G10 G 9
M
18
COOK
DINNER
CLEAR
LIGHT
LEVEL
LUNCH
CUSTOM
HELP
BREAKFAST
HI / LO
R-1600
R-1601
R-1602
TEST PROCEDURES
PROCEDURE
LETTER
N
COMPONENT TEST
RELAY TEST
1.
2.
3.
4.
5.
Disconnect the power supply cord, and then remove outer case.
Open the door and block it open.
Discharge high voltage capacitor.
Disconnect the leads to the primary of the power transformer.
Ensure that these leads remain isolated from other components and oven chassis by using insulation
tape.
6. After that procedure, re-connect the power supply cord.
7. Remove the outer case and check voltage between Pin No. 7 of the 4 pin connector (A) and the
common terminal of the relay RY1 on the control unit with an A.C. voltmeter.
The meter should indicate 120 volts, if not check oven circuit.
RY1 and RY2 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 .................... Defective relay.
DC. voltage not indicated .............. Check diode which is connected to the relay coil. If diode is good,
control unit is defective.
RELAY SYMBOL
OPERATIONAL VOLTAGE
RY1
RY2(COOK)
RY3
RY4
RY5
CONNECTED COMPONENTS
Approx. 24.0V D.C.
Approx. 24.0V D.C.
Approx. 24.0V D.C.
Approx. 24.0V D.C.
Approx. 24.0V D.C.
Oven lamp / Fan motor / Stirrer motor
Power transformer
Turntable motor
Hood motor
Hood motor (HIGH /LOW selection)
8. Disconnect the power supply cord, and then remove outer case.
9. Open the door and block it open.
10.Discharge high voltage capacitor.
11.Reconnect all leads removed from components during testing.
12.Re-install the outer case (cabinet).
13.Reconnect the power supply cord after the outer case is installed.
14.Run the oven and check all functions.
O
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 twice 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
0.5lbs
1ST STAGE
LEVEL
TIME
70%
30sec.
2ND STAGE
LEVEL
TIME
50%
30sec.
3RD STAGE
LEVEL TIME
40%
30sec.
4TH STAGE
LEVEL
TIME
30%
30sec.
(5) If improper operation is indicated, the control unit is probably defective and should be checked.
P
FOIL PATTERN ON THE PRINTED WIRING BOARD TEST
To protect the electronic circuits, this model is provided with a fine foil pattern added to the primary on
the PWB, this foil pattern acts as a fuse.
1. Foil pattern check and repairs.
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) Follow the troubleshooting guide given below for repair.
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TEST PROCEDURES
PROCEDURE
LETTER
COMPONENT TEST
STEPS
1
2
OCCURRENCE
CAUSE OR CORRECTION
Only pattern at "a" is broken.
Pattern at "a" and "b" are broken.
RY3
(J1)
1
c
7
b
a d
P
5) Make a visual inspection of the varistor.
Check for burned damage and examine
the transformer with a tester for the
presence of layer short-circuit (check
the primary coil resistance which is
approximately 780Ω ± 10%). If any
abnormal condition is detected, replace
the defective parts.
*Insert jumper wire J1 and solder.
*Insert the coil RCILF2003YAZZ between "c" and "d".
3
T1
VRS1
CN - A
6) Reconnect all leads removed from components during testing.
7) Re-install the outer case (cabinet).
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 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, re-connect the power supply cord.
7) Follow the troubleshooting guide given below for repair.
STEPS
1
2
8)
9)
10)
11)
12)
13)
14)
OCCURRENCE
CAUSE OR CORRECTION
The rated AC voltage is not present between
Pin No. 7 of the 4-pin connector (A) and the
common terminal of the relay RY1.
The rated AC voltage is present at primary
side of low voltage transformer.
Check supply voltage and oven power cord.
Low voltage transformer or secondary circuit defective.
Check and repair.
Disconnect the power supply cord, and then remove outer case.
Open the door and block it open.
Discharge high voltage capacitor.
Reconnect all leads removed from components during testing.
Re-install the outer case (cabinet).
Reconnect the power supply cord after the outer case is installed.
Run the oven and check all functions.
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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.
7) Relay Circuit
To drive the magnetron, fan motor, stirrer motor, turntable motor, hood motor, and light the oven lamp and hood
lamp.
(1) Key Unit
(2) Control Unit (The Control unit consists of LSI Unit and
Power U nit)
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.
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, P11, P12, P13,
P14 and 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.
9) Back Light Circuit
A circuit to drive the back light (Light emitting diodes LD1LD10).
Control Unit
Control unit consists of LSI, power source circuit, synchronizing signal circuit, ACL circuit, buzzer circuit, relay circuit
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.
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DESCRIPTION OF LSI
LSI(IZA958DR)
The I/O signal of the LSI(IZA958DR) is detailed in the following table.
Pin No.
Signal
I/O
1
AN10
IN
Signal coming from touch key.
When either G10 line on key matrix is touched, a corresponding signal out of P10, P11, P12,
P13, P14 and P17 will be input into AN10. When no key is touched, the signal is held at "H" level.
2
AN11
IN
3
AVSS
IN
Signal similar to AN10.
When either G9 line on key matrix is touched, a corresponding signal will be input into AN11.
Connected to VC.
4
P10
OUT
5
P11
OUT
6
P12
OUT
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 G6 line keys on key matrix is touched.
7
P13
OUT
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 G5 line keys on key matrix is touched.
8
P14
OUT
P15-P16
OUT
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 G4 line keys on key matrix is touched.
Terminal not used.
11
P17
OUT
12
13
X1
X2
IN
OUT
14
VSS
IN
15
OSC2
OUT
16
OSC1
IN
17
TEST
IN
18
RES
IN
19
P20
OUT
9-10
Description
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 G8 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 G7 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 G1 line keys on key matrix is touched.
Connected to GND.
Terminal not used.
Power source voltage:-5V.
VC voltage of power source circuit input.
Internal clock oscillation frequency control output.
Output to control oscillation input of OSC2.
Internal clock oscillation frequency input setting.
The internal clock frequency is set by inserting the ceramic filter oscillation circuit with respect
to OSC1 terminal.
Connected to VC.
Auto clear terminal.
Signal is input to reset the LSI to the initial state when power is applied. Temporarily set to
"L" level the moment power is applied, at this time the LSI is reset. Thereafter set at "H" level.
Signal to sound buzzer (2.0kHz).
A: key touch sound.
B: Completion sound.
0.1 sec
A
2.0 sec
B
20-22
23
P21-P23
OUT
Terminal not used.
P24
OUT
Oven lamp and Fan motor driving signal.
To turn on and off the shut off relay(RY1). The square waveform voltage is delivered to the
RY1 driving circuit and RY2 control circuit.
16.7 msec.
H : GND
L : -5V
During cooking
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Pin No.
24
Signal
P25
I/O
OUT
Description
Magnetron high-voltage circuit driving signal.
To turn on and off the cook
relay(RY2). In P-HI operation, the
signals holds "L" level during microwave cooking and "H" level
while not cooking. In other cooking
modes (P-90,P-80,P-70,P-60,P50,P-40,P-30,P-20,P-10,P-0) the
signal turns to "H" level and "L"
level in repetition according to the
power level.
25
26
27
P26
P27
P30
OUT
OUT
OUT
VARI-MODE
P-HI (100% power)
P-90 (approx. 90% power)
P-80 (approx. 80% power)
P-70 (approx. 70% power)
P-60 (approx. 60% power)
P-50 (approx. 50% power)
P-40 (approx. 40% power)
P-30 (approx. 30% power)
P-20 (approx. 20% power)
P-10 (approx. 10% power)
P-0 (0% power)
Hood motor driving signal.
To turn on and off relay(RY4). "L" level: During
Hood motor ON. "H" level: During Hood motor
OFF.
OFF TIME
0 sec.
2 sec.
6 sec.
8 sec.
10 sec.
14 sec.
16 sec.
20 sec.
24 sec.
26 sec.
32 sec.
H : GND
OFF
L
ON
Hood motor high / low driving signal.
To turn on and off relay(RY5). "L" level: During
Hood motor high. "H" level: During Hood motor
low.
Hood lamp driving signal.
To turn on and off solid state relay(SSR1). " 1 "
level: During Hood lamp ON (WORK LIGHT level).
" 2 " level: During Hood lamp ON (NIGHT LIGHT
level). "H" level: During Hood lamp OFF.
ON TIME
32 sec.
30 sec.
26 sec.
24 sec.
22 sec.
18 sec.
16 sec.
12 sec.
8 sec.
6 sec.
0 sec.
H : GND
OFF
L
ON
AC
CURRENT
WORK
LIGHT
H
1
L
NIGHT
LIGHT
H
2
L
28
29-34
35
P31
OUT
Turntable motor driving signal.
To turn on and off relay(RY3). "L" level: During
Turntable ON. "H" level: During Turntable OFF or
during the oven is off condition.
Terminal not used.
Connected to GND.
H : GND
OFF
L
ON
P32-P37
CVCC
OUT
IN
VSS
IN
37-38
V3-V2
IN
39-40
V1-V0
IN
Power source voltage input terminal.
Standard voltage for LCD. Connected to GND.
VCC
IN
COM4-COM1
SEG1-SEG20
Power source voltage: GND (0V).
The power source voltage to drive the LSI is input to VCC terminal.
Terminal not used.
Terminal not used.
Data output terminal to LCD driver IC3.
Terminal not used.
Terminal not used.
36
41
42-45
46-65
66-79
80-85
86
Power source voltage:-5V.
The power source voltage to the LSI is input to VSS terminal. Connected to VC.
Terminal not used.
P40
OUT
OUT
OUT
OUT
OUT
87
P41
IN
Signal similar to AN10.
When either G13 line on key matrix is touched, acorresponding signal will be input into P41.
88
P42
IN
89
IRQ0
IN
Signal similar to AN10.
When either G12 line on key matrix is touched, acorresponding signal will be input into P42.
Signal synchronized with commercial power source frequency.
P74-P91
SEG35-SEG40
This is the basic timing for time processing of LSI.
H : GND
L : -5V
16.7 msec.
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Pin No.
Signal
I/O
AVCC
IN
AN0-AN1
IN
A/D converter power source voltage.
The power source voltage to drive the A/D converter in the LSI. Connected to GND.
Terminal not used.
AN2
IN
To input signal which communicates the door open/close information to LSI.
AN3
IN
Door closed; "H" level signal(0V).
Door opened; "L" level signal(-5V).
Terminal not used.
AN4-AN7
IN
Terminal to change cooking input according to the Model.
By using the A/D converter contained in the LSI, DC voltage in accordance with the Model
in operation is applied to set up its cooking constant.
99
AN8
IN
Input terminal to judge the model.
The signal out of P17 will be input into AN8 through G1 line on key matrix. The LSI will judge
the model by this signal.
100
AN9
IN
Signal similar to AN10.
90
91-92
93
94
95-98
Description
When either G11 line on key matrix is touched, a corresponding signal will be input into AN9.
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SERVICING
1. Precautions for Handling Electronic Components
This unit uses CMOS LSI in the integral part of the
circuits. When handling these parts, the following
precautions should be strictly followed. CMOS LSI have
extremely high impedance at its input and output
terminals. For this reason, it is easily influenced by the
surrounding high voltage power source, static electricity
charge in clothes, etc. and sometimes it is not fully
protected by the built-in protection circuit.
In order to protect CMOS LSI.
1) When storing and transporting, thoroughly wrap them in
aluminium foil. Also wrap all PW boards containing them
in aluminium foil.
2) When soldering, ground the technician as shown in the
figure and use grounded soldering iron and work table.
4) Re-install the outer case (cabinet).
5) Re-connect the power supply cord after the outer
case is installed.
6) Run the oven and check all functions.
A. On some models, the power supply cord between the
touch control panel and the oven itself is so short that the
two can’t be separated. For those models, check and
repair all the controls (sensor-related ones included) of
the touch control panel while keeping it connected to the
oven.
B. On some models, the power supply cord between the
touch control panel and the oven proper is long enough
that they may be separated from each other. For those
models, it is possible to check and repair the controls of
the touch control panel while keeping it apart from the
oven proper; in this case you must short both ends of the
door sensing switch (on PWB) of the touch control panel
with a jumper, which activates an operational state that
is equivalent to the oven door being closed. As for the
sensor-related controls of the touch control panel,
checking them is possible if dummy resistor(s) with
resistance equal to that of the controls are used.
(2) Servicing the touch control panel with power supply
from an external power source:
Disconnect the touch control panel completely from the
oven proper, and short both ends of the door sensing
switch (on PWB) of the touch control panel, which
activates an operational state that is equivalent to the
oven door being closed. Connect an external power
source to the power input terminal of the touch control
panel, then it is possible to check and repair the controls
of the touch control panel it is also possible to check the
sensor-related controls of the touch control panel by
using the dummy resistor(s).
approx. 1M ohm
2. Shapes of Electronic Components
E
C
B
Transistor
2SB1238
Transistor
KRC243M
E
CB
3. Servicing of Touch Control Panel
We describe the procedures to permit servicing of the
touch control panel of the microwave oven and the
precautions you must take when doing so. To perform
the servicing, power to the touch control panel is available
either from the power line of the oven itself or from an
external power source.
(1) Servicing the touch control panel with power supply
of the oven:
CAUTION:
THE HIGH VOLTAGE TRANSFORMER OF THE
MICROWAVE OVEN IS STILL LIVE DURING
SERVICING AND PRESENTS A HAZARD.
Therefore, before checking the performance of the touch
control panel,
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, re-connect the power supply
cord.
After checking the performance of the touch control
panel,
1) Disconnect the power supply cord.
2) Open the door and block it open.
3) Re-connect the leads to the primary of the power
transformer.
4. Servicing Tools
Tools required to service the touch control panel
assembly.
1) Soldering iron: 30W
(It is recommended to use a soldering iron with a grounding
terminal.)
2) Oscilloscope: Single beam, frequency range: DC-10MHz
type or more advanced model.
3) Others: Hand tools
5. Other Precautions
1) Before turning on the power source of the control unit,
remove the aluminium foil applied for preventing static
electricity.
2) Connect the connectors of the key unit to 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.
25
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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:
Avoid possible exposure to microwave energy. Please follow the instructions below before
operating the oven.
1. Disconnect the power supply cord.
2. Visually check the door and cavity face plate for damage
(dents, cracks, signs of arcing etc.).
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.
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.
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.
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.
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:
THE FOLLOWING ADJUSTMENTS OR COMPONENT REPLACEMENT CAN BE PERFORMED
WITHOUT REMOVING THE OVEN FROM THE WALL
1. Hood lamps, sockets and grease filter.
2. Oven lamp, base cover and hood lamp glass assembly.
3. Turntable motor.
4. Hood exhaust louver.
5. Control panel assembly or components
6. Stirrer cover and stirrer fan.
HOOD EXHAUST LOUVER REMOVAL
Push
Hood exhaust
louver
1. Disconnect the power supply cord.
2. Open the door and block it open.
3. Remove the one (1) screw holding the hood exhaust
louver to the oven cavity with the outer case cabinet.
4. Pull the hood exhaust louver from the oven cavity by
pushing the right and left tabs of the hood exhaust louver
Tab (left )
Push
Tab (right)
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to remove.
5. Remove the louver covers A, B, and C from the hood
exhaust louver ( for R-1600 only)
6. Now, the hood exhaust louver is free.
REMOVAL OF OVEN FROM WALL (Two persons recommended to remove the oven)
1. Disconnect the power supply cord, and uncoil the power
supply cord.
2. Remove the turntable tray and support from the oven cavity.
3. Remove the one (1) screw holding the exhaust damper
assembly to the rear stay, and remove the exhaust
damper assembly by sliding it backward.
4. Remove the two (2) screws holding the oven (outer case
cabinet) to the top cabinet.
5. Remove the hood exhaust louver referring to "HOOD
EXHAUST LOUVER REMOVAL".
6. While supporting the front of the oven, unfasten the two
(2) unit mounting screws holding the oven to the unit
mounting plate.
7. Remove the oven by sliding it into the arms of the unit
mounting plate and pull the power cord out of the wall
cabinet.
8. The oven is now free and can be placed on the work
surface selected for servicing the oven.
9. Installation is the reverse of this procedure.
OUTER CASE REMOVAL
free it from retaining clips on the cavity face plate.
7. Disconnect the three (3) pin connector of the power
supply cord from the wiring harness and remove the
power supply cord together with the outer case.
8. Discharge high voltage capacitor.
CAUTION: 1. DISCONNECT OVEN FROM POWER
SUPPLY BEFORE REMOVING OUTER
CASE.
2. DISCHARGE THE HIGH VOLTAGE
CAPACITOR BEFORE TOUCHING ANY
OVEN COMPONENTS OR WIRING.
Remove the oven from the wall and proceed as follows;
1. Disconnect the power supply cord.
2. Open the door and block it open.
3. Remove one (1) screw holding the hood exhaust louver
to the oven, and pull it forward to remove by pushing the
right and left tabs of the hood exhaust louver. (Refer to
procedure of "HOOD EXHAUST LOUVER REMOVAL".)
4. Remove four (4) screws holding the rear stay to the hood
fan motor or the oven, and remove it.
5. Remove the four (4) screws from the rear of the outer
case cabinet.
6. Slide the outer case cabinet back about 1 inch (3 cm) to
POWER TRANSFORMER REMOVAL
Re-install
1. Install by sliding the transformer on the right base plate
with its primary terminals toward the outer case.
2. Secure the transformer with two (2) screws to right base
plate.
3. Re-connect wire leads (primary and high voltage) to the
transformer and filament leads of transformer to
magnetron and high voltage capacitor. Refer to
"PICTORIAL DIAGRAM".
4. Re-install the hood duct holding the fan motor to the oven
cavity front flange with one (1) screw.
5. Re-connect the wire leads to the chassis support and the
fan motor, referring to "PICTORIAL DIAGRAM".
6. Re-install the outer case and check that oven is operating
properly.
CAUTION: MAKE SURE THE WIRE LEADS NEVER
TOUCH THE FAN BLADE.
1. Disconnect the power supply cord, remove the oven
from wall, and remove outer case. (Refer to procedure of
"Removal of Oven from Wall" and "Outer Case Removal".)
And proceed as follows.
2. Open the door and block it open.
3. Discharge high voltage capacitor.
4. Remove one (1) screw holding the hood duct to the oven
cavity front flange.
5. Disconnect the stop switch harness from the chassis
support and disconnect the wire leads from the fan motor.
6. Lift up the fan motor side of the hood duct.
7. Disconnect filament leads of transformer from the
magnetron and capacitor.
8. Disconnect high voltage leads of capacitor from the
transformer.
9. Disconnect wire leads from transformer.
10.Remove two (2) screws holding the transformer to right
base plate.
HOOD FAN MOTOR, HOOD DUCT AND OVEN LAMP SOCKET 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")
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.
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7. Remove one (1) screw holding the hood duct to the oven
cavity front plate.
8. Release the 6-pin connector and the 3-pin connector of
the main harness A from the hood duct.
9. Disconnect the wire leads from the fan motor and chassis
support, and release the wire leads from holes of the
hood duct.
10.Remove the two (2) unit mounting screws from the
chassis support (right side) and the hood duct (left side).
11.Remove the one (1) screw holding the chassis support.
12.Remove the chassis support.
13.Remove the hood duct from the oven cavity by lifting it up
14.Screw the oven lamp off from the lamp socket.
15.Remove the lamp socket from the lamp angle.
16.Pull the wire leads from the oven lamp socket by pushing
the terminal hole of the oven lamp socket with the small
flat type screw driver.
17.Now, the oven lamp socket and the hood duct are free.
Oven lamp
socket
Terminal
Wire lead
Terminal hole
Flate type small
screw driver
MAGNETRON REMOVAL
1. Disconnect the power supply cord , remove the oven
from wall and remove outer case (Refer to procedure of
"Removal of Oven from Wall" and "Outer case Removal".)
2. Open the door and block it open.
3. Discharge high voltage capacitor.
4. Disconnect the wire leads from the fan motor and the
chassis support, and release them from the holes of
hood duct.
5. Remove the one (1) screw holding the hood duct to the
oven cavity front plate, and lift up the fan motor side of the
hood duct.
6. Remove the one (1) screw holding the capacitor holder to
the hood intake duct.
7. Disconnect the high voltage wire leads of the high
voltage rectifier assembly from the magnetron.
8. Disconnect the filament lead of the transformer from the
magnetron.
9. Remove the power transformer from the right base plate,
referring to "POWER TRANSFORMER REMOVAL".
10.Carefully remove four (4) mounting screws holding the
magnetron to waveguide. When removing the screws
hold the magnetron to prevent it from falling.
11.Remove the magnetron from the unit with care so the
magnetron tube should not be hit by any metal object
around the tube.
12.Remove the one (1) screw holding the magnetron air
guide to the magnetron.
13.Remove the magnetron air guide
CAUTION: WHEN REPLACING THE MAGNETRON, BE
SURE THE R.F. GASKET IS IN PLACE AND
MOUNTING SCREWS ARE TIGHTENED SECURELY.
HIGH VOLTAGE RECTIFIER AND HIGH VOLTAGE CAPACITOR REMOVAL
voltage capacitor.
8. Disconnect high voltage wire from capacitor.
9. Remove one (1) screw holding capacitor holder and high
voltage rectifier to the hood intake duct.
10.Disconnect the high voltage rectifier assembly from the
high voltage capacitor.
11.Now, the high voltage rectifier assembly is free.
12.Remove capacitor from the holder.
13.Now, the high voltage capacitor is free.
CAUTION: WHEN REPLACING THE HIGH VOLTAGE
RECTIFIER ASSEMBLY, THE GROUND SIDE
TERMINAL MUST BE SECURED FIRMLY
WITH A GROUNDING SCREW.
1. Disconnect the power supply cord , remove the oven
from wall and remove outer case (Refer to procedure of
"Removal of Oven from Wall" and "Outer case Removal".)
2. Open the door and block it open.
3. Discharge high voltage capacitor.
4. Disconnect the wire leads from the fan motor and the
chassis support, and release them from the holes of
hood duct.
5. Remove the one (1) screw holding the hood duct to the
oven cavity front flange, and lift up the fan motor side of
the hood duct.
6. Disconnect the high voltage wire leads with high voltage
rectifier from the magnetron.
7. Disconnect filament lead of the transformer from high
HOOD FAN THERMAL CUT-OUT 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")
2. Open the door and block it open.
3. Discharge high voltage capacitor.
4. Disconnect the wire leads from the hood fan thermal
cut-out.
5. Remove one (1) screw holding the thermal cut-out to the
right base plate.
6. Remove the hood fan thermal cut-out from the right base
plate.
7. Now, the hood fan thermal cut-out is free.
28
R-1600
R-1601
R-1602
THERMAL CUT-OUT (CAVITY) 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")
2. Open the door and block it open.
3. Discharge high voltage capacitor.
4. Remove two (2) unit mounting screws.
5. Remove the hood duct. (Refer to the procedure of "
HOOD FAN MOTOR, HOOD DUCT AND OVEN LAMP
SOCKET REMOVAL".
6. Straighten the tab holding the thermal cut-out to the top
plate of the oven cavity.
7 . Release the thermal cut-out (cavity) from the one slit of
the oven cavity top plate.
8. Disconnect the wire leads from the thermal cut-out
(cavity).
9. Now, the thermal cut-out (cavity) is free.
NOTE: When the tab is broken or turned off, use the another
tab which is fixed near the slit when the new thermal
cut-out is replaced.
Top of Oven Cavity
Tab
Thermal
Cut-Out
Waveguide
Slit
Thermal
Cut-Out
(Cavity)
Thermal
Cut-Out
Tab
TEMPERATURE FUSE (MAGNETRON) 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")
2. Open the door and block it open.
3. Discharge high voltage capacitor.
4. Remove the hood fan motor and the hood duct from the
oven cavity, referring to the procedure of " HOOD FAN
MOTOR, HOOD DUCT AND OVEN LAMP SOCKET
REMOVAL".
5. Disconnect the wire leads from the temperature fuse
(Magnetron).
6. Remove the one (1) screw holding the temperature fuse
(Magnetron) to the oven cavity.
7. Now, the temperature fuse (Magnetron) is free.
COOLING FAN MOTOR REMOVAL
1. Disconnect the power supply cord, remove the oven
from wall and remove outer case (Refer to procedure of
"Removal of Oven from Wall" and "Outer case Removal".)
2. Open the door and block it open.
3. Discharge high voltage capacitor.
4. Disconnect the wire leads from the fan motor and the
chassis support.
5. Remove one (1) screw holding the hood duct to oven
cavity.
6. Release the wire leads from the hole of the hood duct.
7. Lift up the fan motor side of the hood duct.
8. Remove the two (2) screws holding the fan motor to the
hood duct.
9. Remove the fan blade from the fan motor shaft according
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 any pieces do not 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 coil of the fan motor
because the coil may be cut or injured.
* Do not disfigure the bracket by touching with the
pliers.
11.Remove the fan blade from the shaft of the fan motor by
pulling and rotating the fan blade with your hand.
12. Now, the fan blade will be free.
CAUTION:
* Do not reuse the removed fan blade because the
hole (for shaft) may be larger than normal.
13.Now, the fan motor is free.
Coil
Groove joint pliers
Stator
Gap
Bracket
Rotor
Rear View
Shaft
Axis
Stator
These are the positions
that should be pinched
with pliers
Rotor
Side View
INSTALLATION
1. Install the fan blade to the fan motor shaft according to
the following procedure.
29
R-1600
R-1601
R-1602
2. Hold the center of the bracket which supports the shaft
of the fan motor on the flat table.
3. Apply the screw lock tight into the hole (for shaft) of the
fan blade.
4. Install the fan blade to the shaft of fan motor by pushing
the fan blade with a small, light weight, ball peen hammer
or rubber mallet.
5. Install the fan motor to the hood duct with the two (2) screws.
CAUTION:
* Do not hit the fan blade strongly when installing
because the bracket may be disfigured.
* Make sure that the fan blade rotates smooth after
installation.
* Make sure that the axis of the shaft is not slanted.
6. Install the hood duct to the oven cavity with the one (1)
screw.
7. Re-install the wire leads to the hole of the hood duct.
8. Connect the wire leads to the fan motor and chassis
support, referring to the pictorial diagram.
9. Refer to procedure of "OUTER CASE REMOVAL". And
reverse their procedure. And re-install the outer case.
Shaft
Table
Center of
bracket
TURNTABLE MOTOR REMOVAL
1. Disconnect the power supply cord.
2. Open the door and block it open.
3. Remove the three (3) screws holding the base cover to
the oven cavity
4. Remove the base cover from the oven cavity by pulling
down and moving to the left slightly.
5. Disconnect the wire leads from the turntable motor.
6. Remove one (1) screw holding turntable motor to the
oven cavity.
7. Now the turntable motor is free.
STIRRER MOTOR REMOVAL
5. Disconnect the wire leads from the stirrer motor.
6. Remove the two (2) screws holding the stirrer motor to
the waveguide of the oven cavity.
7. Remove the stirrer motor from the waveguide.
8. Now, the stirrer motor is free.
9. When installing the stirrer motor, the shaft of stirrer
motor must be inserted to the stirrer fan shaft. Refer to
the procedure of "STIRRER COVER AND STIRRER
FAN INSTALLATION".
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")
2. Open the door and block it open.
3. Discharge high voltage capacitor.
4. Remove the hood fan motor and the hood duct from the
oven cavity, referring to the procedure of " HOOD FAN
MOTOR, HOOD DUCT AND OVEN LAMP SOCKET
REMOVAL".
STIRRER COVER AND STIRRER FAN INSTALLATION
1. Put the stirrer fan on the stirrer cover to match the stirrer
fan shaft to the center of the stirrer support.
2. Insert the shaft of stirrer fan to the shaft of stirrer motor.
3. Insert the cutout of stirrer cover to the tabs on the ceiling.
4. Install the stirrer cover to the oven cavity, and secure it
by one canoe clip.
Shaft
Stirrer Fan
Stirrer Cover
Canoe Clip
OVEN LAMP REMOVAL
1. Disconnect the power supply cord.
2. Remove one (1) screw holding the hood exhaust louver
to oven cavity front flange.
3. Remove the hood exhaust louver from the oven by
pushing the right and left tabs of the hood exhaust louver.
(Refer to procedure of "HOOD EXHAUST LOUVER
4.
5.
6.
7.
30
REMOVAL")
Lift the oven lamp cover up.
Now, the oven lamp and the socket are found.
Screw the oven lamp off from the lamp socket.
Now, the oven lamp is free.
R-1600
R-1601
R-1602
CONTROL PANEL ASSEMBLY, CONTROL UNIT AND KEY UNIT REMOVAL
fixing plate.
16.Release the one (1) tab holding the LCD to the LCD
holder.
17.Release the four (4) tabs holding the LSI unit to the LCD
holder.
18.Remove the LCD holder and the LED sheet.
19.Now, the control unit is free.
20.Remove the one (1) screw holding the key fixing plate to
the control panel.
21.Release the six (6) tabs holding the key fixing plate to the
control panel.
22.Remove the key fixing plate from the control panel.
23.Tear the key unit from the key fixing plate.
24.Now, the key unit is free
1. Disconnect the power supply cord.
2. Open the door and block it open.
3. Remove one (1) screw holding the hood exhaust louver
to oven cavity front flange.
4. Remove the hood exhaust louver from the oven by
pushing the right and left tabs of the hood exhaust louver.
(Refer to procedure of "HOOD EXHAUST LOUVER
REMOVAL")
5. Remove one (1) screw holding the control panel to the
oven cavity front face plate.
6. Release the control panel from the oven cavity front face
plate by lifting it up.
7. Disconnect the wire leads from the relays RY1 and RY2.
8. Disconnect the connectors CN-A, CN-B and CN-E from
the control unit.
9. Remove the control panel assembly from the oven.
10.Now, the control panel assembly is free.
11.Disconnect the connector CN-G from the control unit.
12.Release the two (2) tabs of LCD holder from the two (2)
holes of the key fixing plate.
13.Release the four (4) tabs holding the LCD holder to the
tcontrol panel.
14.Remove two (2) screws holding the power unit to the key
fixing plate.
15.Release the two (2) tabs holding the power unit to the key
NOTES FOR KEY UNIT REPLACEMENT
1. Do not reuse the torn key unit because the performance
of the adhesive becomes weak.
2. Before attaching a new key unit, wipe off remaining
adhesive on the key fixing plate surfaces completely with
a soft cloth soaked in alcohol.
3. When attaching the key unit to the key fixing plate, adjust
the upper edge and right edge of the key unit to the
correct position of key fixing plate.
4. Stick the key unit firmly to the key fixing plate by rubbing
with soft cloth not to scratch.
POSITIVE LOCK® CONNECTOR (NO-CASE TYPE) REMOVAL
Terminal
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")
2. Open the door and block it open.
3. Discharge high voltage capacitor.
4. Push the lever of positive lock® connector.
5. Pull down on the positive lock ® connector.
Positive lock®
connector
4
Push
Lever
CAUTION: WHEN CONNECTING THE POSITIVE LOCK®
CONNECTORS TO THE TERMINALS, INSTALL THE POSITIVE LOCK® SO THAT THE
LEVER FACES YOU.
5
Pull down
Positive lock® connector
DOOR SENSING SWITCH, SECONDARY INTERLOCK SWITCH AND MONITOR SWITCH 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")
2. Open the door and block it open.
3. Discharge high voltage capacitor.
4. Remove the control panel assembly, referring to the
procedure of "CONTROL PANEL ASSEMBLY ,
CONTROL UNIT AND KEY UNIT REMOVAL".
5. Remove the two (2) screws holding the latch hook to the
oven cavity front flange.
6. Remove the latch hook from the oven cavity front flange.
7. Disconnect the wire leads of each switch.
8. Remove each switch from the latch hook by pushing the
one (1) stopper tub holding each switch.
9. Now, each switch is free.
Re-install
1. Re-install each switch in its place. The secondary interlock
switch is in the lower position, door sensing switch is in
the upper position and the monitor switch is in the middle
position.
2. Re-connect wire leads to each switch. Refer to pictorial
diagram.
3. Secure the latch hook (with two (2) mounting screws) to
oven cavity front 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".
31
R-1600
R-1601
R-1602
DOOR SENSING SWITCH, SECONDARY INTERLOCK SWITCH AND MONITOR SWITCH ADJUSTMENT
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")
2. Open the door and block it open.
3. Discharge high voltage capacitor.
4. Remove the control panel assembly, referring to the
procedure of "CONTROL PANEL ASSEMBLY ,
CONTROL UNIT AND KEY UNIT REMOVAL".
If the door sensing switch, secondary interlock switch and
monitor switch do not operate properly due to a
misadjustment, the following adjustment should be made.
5. Loosen the two (2) screws holding latch hook to the oven
cavity front flange.
6. With door closed, adjust latch hook by moving it back and
forth, and up and down. In and out play of the door
allowed by the upper and lower position of the latch hook
should be less than 0.5mm. The vertical position of the
latch hook should be adjusted so that the door sensing
switch and secondary interlock switch are activated with
the door closed. The horizontal position of the latch hook
should be adjusted so that the monitor switch is activated
with the door closed.
7. Secure the screws with washers firmly.
8. Check all of the switches operation. If any switch has not
activated with the door closed, loosen screw and adjust
the latch hook position.
2.
3.
4.
5.
the latched position. First check upper position of latch
hook, pushing and pulling upper portion of door toward
the oven face. Then check lower portion of the latch
hook, pushing and pulling lower portion of the door
toward the oven face. Both results (play in the door)
should be less than 0.5mm.
The door sensing switch and secondary interlock switch
interrupt the circuit before the door can be opened.
Monitor switch contacts close when door is opened.
The contact of door sensing switch and secondary
interlock switch open within 1.2mm gap between right
side of cavity face plate and door when door is open.
Re-install outer case and check for microwave leakage
around door with an approved microwave survey meter.
(Refer to Microwave Measurement Procedure.)
Latch
Hook
Latch
Heads
Door
Sensing
Switch
Monitor
Fuse
Door
Monitor
Switch
Secondary
Interlock
Switch
After adjustment, check the following.
1. In and out play of door remains less than 0.5mm when in
Figure C-1. Latch Switch Adjustments
DOOR REPLACEMENT
4. Make sure upper and lower oven hinges are inserted into
the upper an lower door hinge pins.
5. Make sure the door is parallel with oven face lines (left
and upper side lines) and door latch heads pass through
latch holes correctly.
6. Re-install the door stopper to the door assembly.
7. Re-install the hood exhaust louver to the oven cavity
front face plate.
Note: After any service to the door;
(A) Make sure that door sensing switch and secondary
interlock switch are operating properly. (Refer to
chapter "Test Procedures".)
(B) An approved microwave survey meter should be
used to assure compliance with proper microwave
radiation emission limitation standards.
DOOR ASSEMBLY 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")
2. Open the door and block it open.
3. Discharge high voltage capacitor.
4. Remove the hood exhaust louver from the oven cavity by
pushing the right and left tabs of the hood exhaust louver.
(Refer to the procedure of "HOOD EXHAUST LOUVER
REMOVAL".)
5. Insert a putty knife (thickness of about 0.5mm) into the
gap A between the door stopper and the choke cover
as shown in Figure C-3 to free engaging parts.
6. Lift up the door stopper.
7. Now, the door stopper is free from the door assembly.
8. Lift up the door assembly to release the upper and lower
door hinge pins from the upper and lower oven hinges.
9. Now, the door assembly is free.
After any servicing, make sure of the following :
1. Door latch heads smoothly catch latch hook through
latch holes and that latch head goes through center of
latch hole.
2. Deviation of door alignment from horizontal line of cavity
face plate is to be less than 1.0mm.
3. Door is positioned with its face pressed toward cavity
face plate.
4. Re-install outer case and check for microwave leakage
around door with an approved microwave survey meter.
(Refer to Microwave Measurement Procedure.)
Note: When the individual parts are replaced, refer to
"Door Disassembly".
DOOR ASSEMBLY RE-INSTALL
1. On re-installing door, insert the lower oven hinge to lower
door hinge pin.
2. Insert the upper oven hinge to the upper door hinge pin.
3. Shut the door (close the contacts of interlock switches).
32
R-1600
R-1601
R-1602
Note: The door on a microwave oven is designed to
act as an electronic seal preventing the leakage
of microwave energy from oven cavity during
cook cycle. This function does not require that
door be air-tight, moisture (condensation)-tight
or light-tight. Therefore, occasional appearance
of moisture, light or sensing of gentle warm air
movement around oven door is not abnormal
and do not of themselves indicate a leakage of
microwave energy from oven cavity.
Tab
Hood Exhaust Louver
Upper Door
Hige Pin
RE-INSTALL
Tab
Upper
Oven
Hige
Door assembly
Lower
Oven Hige
Lower Door
Hige Pin
Latch
Heads
Door Stopper
RE-INSTALL
Figure C-2. Door Replacement and adjustment
DOOR DISASSEMBLY
LATCH SPRING, LATCH HEAD AND DOOR PANEL
13.Release the latch spring from the tab of the latch head
and tab of the door frame.
14.Release the latch head from the door frame.
15.Now, the latch spring, latch head and door frame are
free.
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")
2. Open the door and block it open.
3. Discharge high voltage capacitor.
4. Remove the hood exhaust louver from the oven cavity by
pushing the right and left tabs of the hood exhaust louver.
(Refer to the procedure of "HOOD EXHAUST LOUVER
REMOVAL".)
5. Remove door assembly, refer to "Door Replacement".
Replacement of door components are as follows:
6. Place door assembly on a soft cloth with latches facing
up.
Note: As the engaging part of choke cover and door frame
are provided at 15 places, do not force any particular
part.
A
Door Stopper
Choke Cover
Putty Knife
CHOKE COVER
7. Insert a putty knife (thickness of about 0.5mm) into the
gap A between the choke cover and door stopper and
between the choke cover and the door frame as shown
Figure C-3 to free engaging parts.
8. Pry the choke cover by inserting a putty knife in order
shown in Figure C-3.
9. Now choke cover is free from door panel and door frame.
Door Frame
Figure C-3. Door Disassembly
DOOR GLASS
16.Remove the glass stopper from the door frame by
releasing the tab of door frame.
17.At first, slide the door glass toward the glass stopper
side, and then slide it up. And release it from the right and
lower long tabs of the door frame.
18.Release the door glass from the upper long tab of the
door frame.
19.Release the door glass from the long tabs of the door
frame.
20.Now, the door glass is free.
DOOR FRAME
10.Remove six (6) screws holding the door panel and the
door handle to the door frame assembly.
11.Release the door frame assembly from the door panel.
NOTE: It is easier to release the engaging parts of the upper
or lower door hinge pin side at first.
12.Now, door frame assembly is free.
33
1
2
3
34
CN-C
N.O.
RY3
N.O.
COM.
RY1
7
CN-A
T1
1
1
4
RY2
COM.
RY2
N.O.
RY1
COM.
RY1
N.O.
C100
BLK
ORG
5
ORG
ORG
RED
BLK
RED
ORG
RED
1 RED
YLW
BLK
WHT
CN-A
2
5
4
3
6
7
1 WHT
2
5
4
3
6
RED
8
7
N.C.
BLK
RED
WHT
N.O.
COM.
WHT
WHT
BLK
GRY
GRY
WHT
WHT
FUSE & HOLDER
SECONDARY
INTERLOCK
SWITCH
COM.
MONITOR
SWITCH
BLK
GRN
G
R
Y
WHT
WHT
BLU
TURNTABLE
MOTOR
WHT
ORG
WHT
RED
MAGNETRON
TEMPERATURE
FUSE
RED
OVEN LAMP & SOCKET
WHT
RED
ORG
Blue Marking
HOOD LAMPS
& SOCKETS
6
ORG
ORG
GRY
WHT
W W
H H
T T
MAGNETRON
R
E
D
ORG
RED
RED
HIGH
VOLTAGE
RECTIFIER
HOOD FAN
THERMAL
CUT-OUT
POWER
TRANSFORMER
HIGH VOLTAGE
WIRE A
HIGH VOLTAGE
CAPACITOR
HIGH VOLTAGE COMPONENTS
WHT
RED
STIRRER MOTOR
Blue
Marking
Power Supply
cord 120V 60Hz
5
BLK
FAN
MOTOR
RED
WHT
RED
CAVITY
THERMAL
CUT-OUT
WHT
BLK
1 BLU
4
to Right Base Plate
3
CN-F
COM.
RED
DOOR SENSING SWITCH
N.O.
BLU
3
Figure S-1. Pictorial Diagram
RY2
RY2: PRIMARY
INTERLOCK
RELAY
RY4
CN-B COM.
1
9
2
CN-C
ORG
GRN
GRN
3 BLK
2
CN-E
1
1 CN-G 14
IC3
CN-B
9
1 RED
2 GRN
CN-E
E
CONTROL UNIT
H
WHT 2 WHT
GRN 1 GRN
A
IC1
G
to Chassis Support
D
BLK
B
RED 5 RED
YLW 4 YLW
WHT 3 WHT
BLK 2 BLK
C
HOOD FAN MOTOR
1
RY5
6
R-1600
R-1601
R-1602
6
A
B
C
D
E
F
F
G
H
R-1600
R-1601
R-1602
2
1
4
3
6
5
A
A
B
B
Q2
2SB1238
R4 27
D1-4
11ES1
1
5
D4
D3
D2
d
a
b
+
–
+
–
R3
510 1/2w
(J1)
R2 560 1w
c
A3
OVEN LAMP
FAN MOTOR
SP1
PKM22EPT
D23
B9
NO
Q3
KRC243M
RY5
+
–
COM
B7
MICRO
NO
RY4
G
COM
C1
VA
C9
VR
C4
INT
C11
TURNTABLE
MOTOR
C5
BUZZER
C12
HOOD LAMP
C13
HOOD MOTOR
HIGH / LOW
C6
A
RY2
VC
C5
10µ/35v
D22
B5
C3
D
COM
E2
E1
OVEN LAMP
FAN MOTOR
TURNTABLE
MOTOR
C8
HOOD MOTOR
COM
C7
MICRO
C14
N.C.
C15
DOOR
SENSING
SWITCH
D24
F
HOOD
THEMO
C
E
SSR1
RY1
COM
COM
LOW
B1
HOOD MOTOR
HIGH
B3
GND
R6 3.3k
R20 1k 1/2w
C110
0.033µ/250v
C2
D21
HOOD LAMP
RY3
A5
A
E
C100
7µ/230v
D25
TURNTABLE
MOTOR
A1
R110
47 1/2w
D
MOTOR RUN
CAPACITOR
LED
C4 10µ/35v
8
C3 0.1µ/50v
C
3
C10
R5 4.7k
C2 1000µ/35v
VRS1
10G471K
AC
D6
D1
C1 0.1µ/50v
T1
A7
D5
F
G
NOTE
: IF NOT SPECIFIED 1SS270A
: IF NOT SPECIFIED 1/4W ± 5%
DOOR SENSING
SWITCH
H
H
Figure S-2. Power Unit Circuit
1
2
4
3
35
5
6
3
36
C-15
4
C-14
NOTE
LD10
LD1
LD9
LD8
LD3
C17 0.1µ/50v
Q22
DTA143EKA
Q21
DTA123JKA
Q20
DTA143EKA
Q30
DTA143EKA
Q24
DTA143EKA
Q25
DTA143EKA
C12
0.1µ
/50v
: IF NOT SPECIFIED, 1/10W ± 5%
D41 1SS355
D20 1SS355
LD2
–
+
H
I
Q11
DTA143EKA
F
C20 0.1µ/50v
Q23
DTA143EKA
G
R41 15k
5
1
BREAKFAST
CLOCK
TIMER
WORK
LIGHT
CUSTOM
HELP
NIGHT
LIGHT
STOP
CLEAR
LUNCH
COMPU
DEFROST
MEMORY
COOK
KEY UNIT
DINNER
POWER
LEVEL
8
6
1
G4
FG H I
FAN
HI / LO
START
TURNTABLE
ON / OFF TOUCH ON
7
3
9
2
G5
4
G6
G7
0
5
100
IC1
IZA958DR
50
30
G3
G2
CF1
CST4.00MGW
31
SEG5
SEG4
SEG3
SEG2
SEG1
COM1
COM2
COM3
COM4
VCC
V0
V1
V2
V3
VSS
CVCC
P37
P36
P35
P34
51
POPCORN
MINUTE
PLUS
G1
5
6
C63 330p/50v
C65 330p/50v
R75 270k
Figure S-3. LSI Unit Circuit
R73 15k
R72 15k
R71 15k
R70 15k
R69 15k
R67
15k
G8
80
SEG36
SEG37
SEG38
SEG39
SEG40
P40
P41
P42
IRQ0
AVCC
AN0
AN1
AN2
AN3
AN4
AN5
AN6
AN7
AN8
AN9
81
See Figure S-4.
GND
4
R68 15k
Q10
2SA1037AK
CPU UNIT
3
NC
HOOD MOTOR
C-8
COM
DOOR
C-7
C-6
OVEN LAMP
FAN MOTOR
MICRO
C-5
BUZZER
HOOD MOTOR
C-13
H/L
C-1
C-12
HOOD LAMP
VA
C-9
C-11
TURNTABLE
MOTOR
C-10
C-3
VR
LED
VC
C-2
C10 47µ/16v
LD7 LD6 LD5 LD4
C-4
R12
15k
R10
1k
ZD10
UDZ4.3B
GND
C13
0.01µ
/25v
(J10)
R77 270k
C14
0.01µ
/25v
R11
15k
C92
4.7k
R40 4.7k
R79 270k
2
R78 270k
(J11) 4.7K
C40
0.01µ/25v
(J12)
(J13) 4.7K
R74 270k
(J14)
(J15) 4.7K
C64 330p/50v
(J16)
(J17) 4.7K
C62 330p/50v
1
R76 270k
H
R66
15k
G
R65
15k
F
R64
15k
E
R63
15k
C
C110
4.7k
C93 4.7k
C60 330p/50v
B
SEG35
P91
P90
P87
P86
P85
P84
P83
P82
P81
P80
P77
P76
P75
P74
SEG20
SEG19
SEG18
SEG17
SEG16
SEG15
SEG14
SEG13
SEG12
SEG11
SEG10
SEG9
SEG8
SEG7
SEG6
D
2
AN10
AN11
AVSS
P10
P11
P12
P13
P14
P15
P16
P17
X1
X2
VSS
OSC2
OSC1
TEST
RES
P20
P21
P22
P23
P24
P25
P26
P27
P30
P31
P32
P33
1
R80
1M
A
R60
15k
INT
R-1600
R-1601
R-1602
6
A
B
C
D
E
F
G
H
G14 G13 G12 G11 G10 G 9
C61 330p/50v
2
3
37
4
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
: IF NOT SPECIFIED, 1/10W ± 5%
H
G
NOTE
IC1 P74
IC1 P75
25
C123 0.1µ/50v
C122 0.1µ/50v
C121 0.1µ/50v
C120 0.1µ/50v
50
51
VDD
NC
NC
RESET
TEST
VREF
R03
R02
R01
R00
P13
P12
P11
P10
P03
P02
P01
P00
K03
K02
K01
K00
NC
NC
NC
26
C126 0.1µ/50v
OSC4
OSC3
VD1
OSC2
OSC1
VSS
BZ
COM0
COM1
COM2
COM3
COM4
COM5
COM6
COM7
SEG0
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
IC3
IZA951DR
75
76
LIQUID CRYSTAL DISPLAY
4
Figure S-4. Indicator Circuit
100
SEG10
SEG11
SEG12
SEG13
SEG14
SEG15
SEG16
SEG17
SEG18
SEG19
SEG20
SEG21
SEG22
SEG23
SEG24
SEG25
SEG26
SEG27
SEG28
SEG29
SEG30
SEG31
SEG32
SEG33
SEG34
1
DEFROST TURNTABLE OFF COOK HELP
IC1 P76
IC1 P77
IC1 P80
IC1 P81
IC1 P82
IC1 P83
IC1 P84
IC1 P85
G
IC1 P86
IC1 P87
IC1 P90
IC1 P91
GND
R133
510k
R132
33k
C125
0.1µ/50v
1
R134 15k
R129 4.7 k
VC
A
C127
0.1µ/50v
F
3
C128
0.1µ/50v
D
C124 0.1µ/50v
R131 4.7 k
E
2
C129
0.1µ/50v
1
VC1
VC2
VC3
VC4
VC5
CF
CE
CD
CC
CB
CA
COM8
COM9
COM10
COM11
COM12
COM13
COM14
COM15
COM16
SEG39
SEG38
SEG37
SEG36
SEG35
B
COM16
COM15
COM14
COM13
COM12
COM11
COM10
COM9
SEG40
SEG39
SEG38
SEG37
SEG36
SEG35
SEG34
SEG33
SEG32
SEG31
SEG30
SEG29
SEG28
SEG27
SEG26
SEG25
SEG24
SEG23
SEG22
SEG21
SEG20
SEG19
SEG18
SEG17
SEG16
SEG15
SEG14
SEG13
SEG12
SEG11
SEG10
SEG9
SEG8
SEG7
SEG6
SEG5
SEG4
SEG3
SEG2
SEG1
COM1
COM2
COM3
COM4
COM5
COM6
COM7
COM8
R-1600
R-1601
R-1602
5
5
6
A
B
C
C
6
D
E
F
H
R130 4.7 k
R128 4.7 k
R-1600
R-1601
R-1602
2
1
4
3
6
5
A
A
DIP
CN - B
B
LOT NO.
1
B
9
BFB
SSR1
C
R20
R110
C
C110
RY4
RY5
1
D25
MICRO
4
D24
B
Q3
D
Q5
SP1
15
E
2
5
CN - E
D23
D22
RY2
D
1
D21
AC
R6
RY1
CN - C
2
R3
1
E
RY3
C3
5
(J1)
E
1
7
3
P
R4
C4
E
B
Q2
Q1
R5
S
3
VRS1
F
F
B
8
T1
R1
R2
D3
1
CN - A
D2
D4
D1
G
C2
G
C1
D5
D6
C100
H
H
Figure S-5. Printed Wiring Board
1
2
4
3
38
5
6
R-1600
R-1601
R-1602
PARTS LIST
Note: The parts marked “∆” may cause undue microwave exposure.
The parts marked “*” are used in voltage more than 250V.
REF. NO.
"§" MARK: PARTS DELIVERY SECTION
PART NO.
§
DESCRIPTION
1- 1
1- 2
1- 3
1- 4
1- 5
1- 6
1- 7
1- 8
1- 9
1-10
1-11
1-12
1-13
1-14
1-15
1-16
1-17
FH-DZB012MRY0
RC-QZA234WRE0
QFS-TA013WRE0
RMOTDA211WRE0
RMOTDA214WRE0
RTHM-B005MRE0
RTRN-B062MRE0
RV-MZA281WRE0
QFSHDB003MRE0
QSW-MA110WRE0
FFS-BA016/KIT
FACCDB011MRE0
QSOCLB006MRE0
FMOTEA366WRK0
RMOTEA346WRE0
RLMPTA068WRE0
RTHM-A070WRE0
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
High voltage rectifier assembly
High voltage capacitor
Temperature fuse 150˚C (Magnetron)
Turntable motor
Stirrer motor
Thermal cut-out N.O. 60˚C (Hood Fan)
Power transformer
Magnetron
Fuse holder
Secondary interlock and door sensing switches
Monitor switch with fuse assembly
Power supply cord
Oven lamp socket
Hood fan motor
Fan motor
Oven lamp
Thermal cut-out 145˚C (Cavity)
2- 1
2- 2
2- 2
2- 2
2- 3
2- 4
2- 5
2- 5
2- 5
2- 6
2- 7
2- 7
2- 7
2-7-1
2-7-1
2-7-1
2-7-2
2- 8
2- 8
2- 8
LSTY-B021MRP0
PDIF-B018MRF0
PDIF-B019MRF0
PDIF-B020MRF0
GDAI-B055MRP0
PCUSUB040MRP0
GCABUB084MRP0
GCABUB090MRP0
GCABUB086MRP0
TMAPCB052MRR0
FANGKB009MRY0
FANGKB010MRY0
FANGKB011MRY0
LANGQB016MRP0
LANGQB020MRP0
LANGQB027MRP0
PGLSPB004MRE0
PCOVPB064MRT0
PCOVPB066MRT0
PCOVPB067MRT0
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
Rear stay
Hood exhaust louver [R-1600]
Hood exhaust louver [R-1601]
Hood exhaust louver [R-1602]
Right base plate
Base cover cushion
Outer case cabinet [R-1600]
Outer case cabinet [R-1601]
Outer case cabinet [R-1602]
Schematic diagram
Hood lamp glass assembly [R-1600]
Hood lamp glass assembly [R-1601]
Hood lamp glass assembly [R-1602]
Hood lamp glass angle [R-1600]
Hood lamp glass angle [R-1601]
Hood lamp glass angle [R-1602]
Hood lamp glass
Base cover [R-1600]
Base cover [R-1601]
Base cover [R-1602]
3- 1
3- 1A
3- 1B
3- 1C
3- 1D
C1
C2
C3
C4-5
C100
C110
D1-4
D5-6
D21-25
Q2
Q3
R2
R3
R4
R5
R6
R20
R110
RY1-2
RY3-4
CPWBFB033MRU0
QCNCMA447DRE0
QCNCMA448DRE0
QCNCMA275DRE0
FW-VZA253DRE0
RC-KZA087DRE0
VCEAB31VW108M
RC-KZA087DRE0
VCEAB31VW106M
RC-QZB014MRE0
RC-QZB019MRE0
VHD11ES1///-1
VHD1SS270A/-1
VHD1SS270A/-1
VS2SB1238//-3
VSKRC243M//-3
VRS-B13AA561J
VRD-B12HF511J
VRD-B12EF270J
VRD-B12EF472J
VRD-B12EF332J
VRD-B12HF102J
VRS-A12HA470J
RRLY-A113DRE0
RRLY-B004MRE0
M
M
M
J
M
J
J
J
J
M
M
J
J
J
J
J
J
J
J
J
J
J
J
M
M
Control unit
4-pin connector CN-A
5-pin connector CN-B
2-pin connector CN-E
Lead wire harness CN-C
Capacitor
0.1 uF
50V
Capacitor
1000 uF
35V
Capacitor
0.1 uF
50V
Capacitor
10 uF
35V
Capacitor
7 uF
230V
Capacitor
0.033 uF
250V
Diode (11ES1)
Diode (1SS270A)
Diode (1SS270A)
Transistor (2SB1238)
Transistor (KRC243M)
Resistor
560 ohm
1W
Resistor
510 ohm
1/2W
Resistor
27 ohm
1/4W
Resistor
4.7k ohm
1/4W
Resistor
3.3k ohm
1/4W
Resistor
1k ohm
1/2W
Resistor
47 ohm
1/2W
Relay (DU24D1-1PR(M))
Relay (FTR-F3AA024E)
Q'TY CODE
ELECTRIC PARTS
*
*
*
∆*
1
1
1
1
1
1
1
1
1
2
1
1
3
1
1
3
1
AK
AP
AG
AL
AQ
AG
BF
BC
AD
AE
AF
AP
AE
BE
AR
AE
AG
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
AF
AT
AT
AT
AM
AA
BA
BC
BC
AB
AN
AM
AM
AG
AG
AG
AH
AY
AY
AY
1
1
1
1
1
1
1
1
2
1
1
4
2
5
1
1
1
1
1
1
1
1
1
2
2
BL
AA
AA
AB
AU
AB
AF
AB
AB
AK
AC
AB
AA
AA
AA
AB
AA
AB
AB
AA
AA
AA
AH
AG
AG
CABINET PARTS
CONTROL PANEL PARTS
39
R-1600
R-1601
R-1602
REF. NO.
RY5
SSR1
SP1
T1
VRS1
3- 2
3- 2
3- 2
3- 2-1
3- 2-1
3- 2-1
3- 2-2
3- 2-2
3- 2-2
3- 2-3
3- 3
3- 4
3- 5
PART NO.
RRLY-A112DRE0
RTR--A001DRE0
RALM-A014DRE0
RTRNPB017MRE0
RH-VZA032DRE0
FPNLCB256MRK0
FPNLCB257MRK0
FPNLCB258MRK0
FUNTKB206MRE0
FUNTKB207MRE0
FUNTKB208MRE0
GMADIB033MRF0
GMADIB033MRF0
GMADIB034MRR0
XEPSD30P10XS0
LHLD-B011MRF0
PSHEPB027MRE0
XEPSD30P10XS0
§
M
M
J
M
J
M
M
M
M
M
M
M
M
M
M
M
M
M
DESCRIPTION
Relay (VE24HSE-K)
Solid state relay
Buzzer (PKM22EPT)
Transformer
Varistor (10G471K)
Control panel sub. assembly [R-1601]
Control panel sub, assembly [R-1600]
Control panel sub, assembly [R-1602]
Key unit [R-1601]
Key unit [R-1600]
Key unit [R-1602]
Display window [R-1601]
Display window [R-1602]
Display window [R-1600]
Screw; 3mm x 10mm
LCD holder
LED sheet
Screw; 3mm x 10mm
Q'TY CODE
1
AH
1
AG
1
AG
1
BG
1
AE
1
AZ
1
AZ
1
AZ
1
AX
1
AX
1
AR
1
AK
1
AK
1
AK
1
AB
1
AD
1
AF
2
AB
OVEN PARTS
∆
∆
4- 1
4- 2
4- 3
4- 4
4- 5
4- 6
4- 7
4- 8
4- 9
4-10
4-11
4-12
4-13
4-14
4-15
4-16
4-17
4-18
4-19
4-20
4-21
4-22
4-23
4-24
4-25
FFTA-B003MRK0
FROLPB025MRK0
NTNT-A090WRE0
LANGKB010MRP0
FCOVPB016MRK0
FFAN-B010MRK0
*************
PPACGB014MRF0
PHOK-B017MRF0
LANGTB036MRP0
NFANPB001MRE0
LBSHC0037WRE0
PCOVPB065MRP0
PDUC-B095MRP0
PCUSUB039MRP0
PFILWB005MRP0
LANGTB046MRP0
LANGTB040MRP0
PDUC-B094MRF0
LHLD-B012MRF0
LSTPPB031MRF0
PCOVPB076MRF0
PCOVPB077MRF0
PCOVPB078MRF0
PDUC-B098MRP0
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
Exhaust damper assembly
Turntable support assembly
Turntable tray
Capacitor holder
Stirrer cover assembly
Stirrer fan assembly
Oven cavity (Not replaceable part)
Turntable motor packing
Latch hook
Unit mounting plate
Fan blade
Cord bushing
Oven lamp cover
Hood intake duct R
Hood intake duct cushion
Lamp filter
Chassis support left
Chassis support right
Hood duct
Rack holder
Door stopper
Louver cover A [R-1600]
Louver cover B [R-1600]
Louver cover C [R-1600]
Magnetron air guide
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
4
1
1
1
1
1
AH
AN
AN
BB
AN
AH
-AA
AG
AP
AC
AB
AD
AM
AA
AB
AD
AE
AL
AF
AC
AG
AG
AG
AC
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
4
2
AX
BD
BD
BC
AQ
AQ
AQ
AC
AC
AB
AZ
AZ
AV
AH
AF
AL
AL
AL
AA
AA
1
1
4
AM
AC
AC
DOOR PARTS
∆
∆
∆
∆
∆
∆
∆
∆
∆
∆
∆
5- 1
5- 2
5- 2
5- 2
5-2-1
5-2-1
5-2-1
5-2-2
5-2-3
5-2-4
5-2-5
5-2-5
5-2-5
5- 3
5- 4
5- 5
5- 5
5- 5
5- 6
5- 7
FDORFB060MRT0
FCOV-B146MRK0
FCOV-B145MRK0
FCOV-B147MRK0
PGLSPB012MRE0
PGLSPB014MRR0
PGLSPB013MRR0
LSTPPB030MRF0
LSTPPB032MRF0
MSPRTA046WRE0
GWAKPB105MRR0
GWAKPB104MRR0
GWAKPB106MRR0
FCOVHB005MRK0
PSHEPB024MRE0
FHNDPB002MRK0
FHNDPB001MRK0
FHNDPB003MRK0
XCPSD40P08000
XCPSD40P12000
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
Door panel assembly
Door frame assembly [R-1600]
Door frame assembly [R-1601]
Door frame assembly [R-1602]
Front door glass [R-1600]
Front door glass [R-1601]
Front door glass [R-1602]
Latch head
Glass stopper
Latch spring
Door frame [R-1600]
Door frame [R-1601]
Door frame [R-1602]
Choke cover assembly
Sealer film
Door handle assembly [R-1600]
Door handle assembly [R-1601]
Door handle assembly [R-1602]
Screw : 4mm x 8mm
Screw : 4mm x 12mm
6- 1
6-1-1
6-1-2
CFZK-B131MRK0
LBSHC0040MRE0
LX-BZ0195WRE0
M
M
M
Installation material assembly
Grommet
Toggle screw
MISCELLANEOUS
40
R-1600
R-1601
R-1602
*
REF. NO.
6-1-3
6-1-4
6-1-5
6-1-6
6-1-7
6- 2
6- 3
6- 4
6- 5
6- 6
6- 7
6- 8
6- 9
6-10
6-11
6-12
6-13
6-14
6-15
6-16
PART NO.
LX-MZB001MRE0
XBRSD50P60000
XOTSD40P12000
XTSSD50P35000
XWHSD50-16300
TINSEB177MRR0
TINSEB210MRR0
TINSKB047MRR0
TINSKB048MRR0
QW-QZB023MRE0
FW-VZB145MRE0
TCAUAA025WRR0
TCAUAB037MRR0
TCAUAB005MRR0
FW-VZB149MRE0
PFIL-B004MRE0
PFIL-B002MRE0
PCLICB003MRE0
UAMI-B009MRM0
TLAB-B038MRR0
§
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
DESCRIPTION
Q'TY CODE
1
AB
2
AC
1
AA
6
AA
2
AA
1
AB
1
AD
1
AC
1
AB
1
AD
1
AU
2
AA
1
AA
1
AB
1
AM
1
AH
2
AF
1
AA
1
AR
1
AA
Cord holder
Screw : 5mm x 60mm
Screw : 4mm x 12mm
Screw : 5mm x 35mm
Washer
Installation instruction
Operation manual
Top template
Wall template
High voltage wire A
Main harness
A
Caution label
Monitor caution label
DHHS caution label
Stop switch harness
Charcoal filter
Grease filter
Canoe clip
Rack
Menu label
SCREWS,NUTS AND WASHERS
7- 1
7- 2
7- 2
7- 2
7- 3
7- 4
7- 5
7- 6
7- 7
7- 8
7- 9
7-10
7-11
XCPSD40P08000
XOTSF40P12000
XOTSE40P12000
XOTSD40P12000
XOTSD40P12000
XBTSD40P08000
LX-CZA038WRE0
LX-CZ0052WRE0
LX-BZ0081YBE0
XCPSD30P08000
LX-BZB012MRE0
XCBSD30P08000
LX-BZA041WRE0
M
M
M
M
M
M
M
M
M
M
M
M
M
Screw : 4mm x
Screw : 4mm x
Screw : 4mm x
Screw : 4mm x
Screw : 4mm x
Screw : 4mm x
Special screw
Special screw
Screw : 4mm x
Screw : 4mm x
Unit mounting
Screw : 3mm x
Special screw
8mm
12mm [R-1600]
12mm [R-1601]
12mm [R-1602]
12mm
8mm
2
4
4
4
13
2
4
2
5
2
2
1
1
8mm
8mm
screw
8mm
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.
41
AA
AB
AA
AA
AA
AA
AA
AA
AA
AA
AD
AA
AA
R-1600
R-1601
R-1602
2
1
4
3
6
5
7-3
4-1
OVEN AND CABINET PARTS
A
A
7-3
1-14
4-13
2-1
7-5
4-19
7-3
4-10
2-5
B
B
7-3
4-12
4-11
7-4
1-12
2-6
7-5
1-15
C
7-1
1-16
C
1-13
1-17
4-17
7-8
1-5
7-3
1-3
6-10
D
D
7-9
4-7
4-18
4-24
4-20 x2
4-23
7-7
6-16
E
4-22
4-25
6-9
4-20 x2
7-6
1-10
1-9
1-8
2-2
4-6
1-11
4-9
7-9
4-14
1-2
F
6-8
4-16
7-7
6-8
4-8
4-5
1-4
6-13
7-10
4-3
6-14
E
7-3
6-12
1-10
4-4
F
7-11
1-7
7-8
1-1
1-6
4-15
2-3
2-8
G
G
7-3
2-4
4-2
7-3
1-13
7-3
6-13
2-7-2
H
1-16
H
2-7
7-2
2-7-1
7-2
1
2
4
3
42
5
6
R-1600
R-1601
R-1602
2
1
4
3
6
5
CONTROL PANEL PARTS
3-2
3-1
3-3
3-2-2
3-4
A
A
7-3
3-5
B
B
3-2-3
3-2-1
4-21
DOOR PARTS
5-4
C
C
5-6
5-3
5-1
5-2
5-6
D
5-2-5
D
5-2-1
5-7
5-2-3
E
E
MISCELLANEOUS
6-6
5-2-2
5-2-4
5-5
F
6-7
F
G
G
6-1
6-1-1
6-1-4
6-15
6-1-5
6-1-2
6-1-6
H
6-11
H
6-1-7
6-1-3
1
2
4
3
43
5
6
R-1600
R-1601
R-1602
DOOR PROTECTOR
SPADP0221MRE0
TOP PAD
SPADBB026MRE0
PACKING AND ACCESSORIES
WRAP COVER
SSAKH0103MRE0
4-3 TURNTABLE TRAY
6-15
RACK
RACK HOLDER
SPADFB047MRE0
6-1
INSTALL MATERIAL ASSEMBLY
SPADFA020WRE0
DOOR PAD
6-3 OPERATION MANUAL
6-5 WALL TEMPLATE
6-2 INSTALLATION INSTRUCTION
6-4 TOP TEMPLATE
BOTTOM PAD
SPADBB025MRE0
6-13 GREASE FILTER (x 2)
ACCESSORY HOLDER
SPADFB045MRE0
Non-replaceable items
PACKING CASE
SPAKCB233MRR10 [R-1600]
SPAKCB233MRR9 [R-1601]
SPAKCB233MRR11 [R-1602]
44
R-1600
R-1601
R-1602
45
R-1600
R-1601
R-1602
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.
'99 SHARP CORP. (4S2.530E) Printed in U.S.A
46