SERVICE MANUAL
KB-3300JS
KB-3300JK
KB-3300JW
S74R243KB330J
FREE STANDING RANGE
WITH MICROWAVE DRAWER
MODELS
KB-3300JS pictured
KB-3300JS
KB-3300JK
KB-3300JW
In the interest of user-safety the unit should be restored to its original condition and only parts identical to those specified
should be used.
WARNING TO SERVICE PERSONNEL:
This service manual is intended for use by persons having electrical and mechanical training and a level of
knowledge of these subjects generally considered acceptable in the appliance repair trade. Sharp Electronics
Corporation cannot be responsible, nor assume any liability, for injury or damage of any kind arising from the
use of this manual.
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, High Voltage Rectifier and Heat sink etc., and Magnetron, 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 .....................................................................................................3
FOREWORD AND WARNING ................................................................................................................................5
PRODUCT SPECIFICATIONS ............................................................................................................................... 6
POWER CONNECTION .........................................................................................................................................8
ANTI-TIP DEVICE ............................................................................................................................................... 10
CONTROL LAYOUT ............................................................................................................................................ 11
SCHEMATICS ..................................................................................................................................................... 12
TEST PROCEDURES .......................................................................................................................................... 17
TOUCH CONTROL PANEL ASSEMBLY ............................................................................................................. 28
OVEN/MICROWAVE DRAWER DISASSEMBLY ................................................................................................. 38
WIRING DIAGRAMS ........................................................................................................................................... 47
PRINTED WIRING BOARDS ............................................................................................................................... 53
PARTS LIST ........................................................................................................................................................ 58
PACKING AND ACCESSORIES ......................................................................................................................... 69
SHARP ELECTRONICS CORPORATION
This document has been published to be used for after sales service only. The contents are subject to change without notice.
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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.
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WARNING TO SERVICE PERSONNEL
Range units 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, Heating Elements, etc..
Read the Service Manual carefully and follow all instructions.
Before Servicing
1. Disconnect the power supply cord
remove cabinet.
2. Open the drawer and keep it open.
3. Discharge high voltage capacitor.
, and then
WARNING: RISK OF ELECTRIC SHOCK.
DISCHARGE THE HIGH-VOLTAGE
CAPACITOR BEFORESERVICING.
When the testing is completed,
1. Disconnect the power supply cord, and then remove
covers.
2. Open the drawer and keep it open.
3. Discharge high voltage capacitor.
4. Reconnect the leads to the primary of the power
transformer.
5. Reinstall the covers.
6. Reconnect the power supply cord.
7. Run the unit and check all functions.
After repairing
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.
1. Reconnect all leads removed from components during
testing.
2. Reinstall the covers.
3. Reconnect the power supply cord.
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
neccessary covers.
2. Open the drawer and keep 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.
1
Microwave ovens should not be operated empty. To test for
the presence of microwave energy within a cavity, place a
cup of cold water on the oven tray, close the drawer 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 re-examine
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 a microwave leakage test should be carried out.
KB-3300JS
KB-3300JK
KB-3300JW
SAFE SERVICING PRACTICES
To avoid personal injury and/or property damage, it is important that Safe Servicing
Practices be observed. The following are some limited examples of safe practices:
1. DO NOT attempt a product repair if you have any doubts as to your ability to
complete it in a safe and satisfactory manner.
2. Before servicing or moving an appliance:
•
Remove the power cord from the electrical outlet, trip the circuit breaker to the
OFF position, or remove the fuse.
3. Never interfere with the proper operation of any safety device.
4. USE ONLY REPLACEMENT PARTS CATALOGED FOR THIS APPLIANCE.
SUBSTITUTIONS MAY DEFEAT COMPLIANCE WITH SAFETY
STANDARDS SET FOR HOME APPLIANCES.
5. GROUNDING : The standard color coding for safety ground wires is GREEN , or
GREEN with YELLOW STRIPES . Ground leads are not to be used as current
carrying conductors. It is EXTREMELY important that the service technician
reestablish all safety grounds prior to completion of service. Failure to do so will
create a hazard.
6. Prior to returning the product to service, ensure that:
•
•
•
•
•
All electrical connections are correct and secure
All electrical leads are properly dressed and secured away from sharp edges,
high-temperature components, and moving parts
All non-insulated electrical terminals, connectors, heaters, etc. are adequately
spaced away from all metal parts and panels
All safety grounds (both internal and external) are correctly and securely
connected
All panels are properly and securely reassembled
ATTENTION!!!
This service manual is intended for use by persons having electrical and mechanical training
and a level of knowledge of these subjects generally considered acceptable in the appliance
repair trade. Sharp Electronics Corporation cannot be responsible, nor assume any liability,
for injury or damage of any kind arising from the use of this manual.
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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 switch shall prevent microwave radiation emission in excess of the requirement as above
mentioned. Secondary interlock relay and door sensing 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 load of 275±15 ml (9.8 oz) of tap water initially at 20±5O C (68OF) 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.
3) Set the cooking control on Full Power Cooking Mode.
4) Close the drawer 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-drawer leakage test (microwave measurement):
1) Grasp the probe of the survey instrument and hold it perpendicular to the gap between the drawer 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 drawer 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 drawer, pull the drawer 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 primary interlock switch/secondary interlock relay does turn the oven OFF before any door movement.
NOTE: After servicing, record data on service invoice and microwave leakage report.
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NOTES
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SERVICE MANUAL
PRODUCT DESCRIPTION
FREE STANDING RANGE
WITH MICROWAVE DRAWER
POWER CONNECTION
ANTI-TIP DEVICE
KB-3300JS
KB-3300JK / KB-3300JW
FOREWORD
SCHEMATICS
This Manual has been prepared to provide Sharp Electronics Corp.
Service Personnel and Service Information for the SHARP FREE
STANDING RANGE WITH MICROWAVE DRAWER, KB-3300JS,
KB-3300JK, and KB-3300JW.
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
5
TEST PROCEDURE
TOUCH CONTROL PANEL
COMPONENT REPLACEMENT
AND ADJUSTMENT PROCEDURE
WIRING DIAGRAM
PARTS LIST
KB-3300JS
KB-3300JK
KB-3300JW
OVEN SPECIFICATION
ITEM
DESCRIPTION
Power Requirements
120 /208 - 120/240Volts / 46/50 Amperes
60 Hertz
Single phase, 3 wire grounded
Thermal Oven Heating Elemants
Top - 3000W Bottom - 2000W
Case Dimensions
Width 29-7/8"
Height 37-5/16"
Depth 27-5/16
Cooking Cavity Dimensions
Width 22-5/8"
Height 15-13/16"
Depth 18"
3.8 Cubic Feet
Cook Top Heating Elements
Two 6" - 1200W
One 8" - 2000W
One 6"/9" - 1200/2400W
Control Complement
Touch Control System
Clock ( 1:00 - 12:59 )
Timer (0 - 99 min. 99 seconds)
Bake pad, Broil pad, Self Clean pad, Timed Cook pad, Number selection pads,
Delay Start pad, Stop/Clear pad, Oven Light pad, Control Lock pad, Setup/Custom
Help
Oven Cavity Light
40W x 1
Safety Standard
UL Listed
Weight
Approx. 260 lbs.
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MICROWAVE DRAWER SPECIFICATION
ITEM
DESCRIPTION
Power Output
1000 watts (IEC TEST PROCEDURE)
Operating frequency of 2450MHz
Cooking Cavity Dimensions
Width 17-11/32
Height 5-7/16"
Depth 17-1/8"
1.0 Cubic Feet
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
START/MINUTE PLUS pad, Defrost pad, Number selection pad, Power Level
pad, Timer/Clock pad,Stop/Clear pad, Sensor Reheat, Sensor Popcorn, Sensor
Cook, Reheat and Micro Warm.
Oven Cavity Light
Yes
Safety Standard
UL Listed
FCC Authorized
DHHS Rules, CFR, Title 21, Chapter 1, Subchapter J
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POWER CONNECTION
208/240 VOLT CONNECTION INSTRUCTIONS
ACCESS TO TERMINAL BLOCK
The range can be set for 208V or 240V. The voltage setting for your
range is pre-set at 240V from the factory. Follow these steps to
change the voltage setting.
Loosen screw on rear access cover and pull down as illustrated in
Figure 6 to access terminal block wiring connection. To close, return
to original location and secure screw.
strain-relief clamp
1 Locate the voltage switch on the lower back side of the
range.
2 Remove the screw and rotate the switch plate 180 as indicated
in the Figure 3.
3 Reinsert the switch plate and replace screw as indicated
in Figure 4. The voltage setting is indicated by the visible
marking.
screw
208V
240V
screw
180
Figure 6
Figure 7
POWER CORD CONNECTIONS
4-WIRE CONNECTION INSTRUCTIONS-FIGURE 8
Figure 3
Before wiring the range, review the suggested power source location.
If connecting to a 4-wire electrical system for a new branchcircuit or mobile home use a 4-wire connection.
Figure 4
3 & 4-WIRE ELECTRICAL WALL RECEPTACLE TYPES &
RECOMMENDED MOUNTING ORIENTATION ON WALL
Figure 5A illustrates 4-wire receptacle required for new and
remodeled installations.
Figure 5B illustrates 3-wire receptacle that is allowed for existing
installations.
1 Follow the power supply kit manufacturer s Installation
Instructions supplied with the strain relief clamp and install.
See Figure 7.
2 Insert the end connectors for line 1, line 2 and neutral and
tighten securely to the terminal block.
IMPORTANT DO NOT LOOSEN the factory installed nut
connections which secure the range wiring to the terminal
block. Electrical failure or loss of electrical connection may
occur if these 3 nuts are loosened or removed.
3 You must disconnect the ground strap. Remove the factory
installed ground screw and plate to release the copper ground
strap from the frame of the range. Cut and discard the copper
ground strap and plate. KEEP the ground screw.
4-wire wall receptacle (14-50R)
3-wire wall receptacle (10-50R)
Figure 5A
Figure 5B
4 Connect the green ground wire lead with the eyelet to the frame
of the range with the ground screw using the same hole in the
frame where the ground screw was originally installed. See
Figure 8.
5 Make sure all screws are tightened securely and replace the
rear access cover. See Figure 6.
3-WIRE CONNECTION INSTRUCTIONS
For existing installations ONLY, refer to Figure 9.
1 Follow the power supply kit manufacturer s Installation
Instructions supplied with the strain relief clamp and install.
See Figure 7.
2 Insert the end connectors for line 1, line 2 and neutral and
tighten securely to the terminal block. See Figure 7.
IMPORTANT DO NOT LOOSEN the factory installed nut
connections which secure the range wiring to the terminal
block. Electrical failure or loss of electrical connection may
occur if these 3 nuts are loosened or removed.
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3 Make sure all connections are tightened securely and replace
the rear access cover. See Figure 7.
connections. Tighten all 3 or 4-wire leads to the terminal block.
Follow wire locations shown in Figure 10.
IMPORTANT DO NOT LOOSEN the factory installed nut
connections which secure the range wiring to the terminal
block. Electrical failure or loss of electrical connection may
occur if these 3 nuts are loosened or removed.
GROUNDING INSTRUCTIONS- ONLY 3-WIRE CONNECTIONS:
A ground strap is installed on this range which connects the center
terminal of the neutral terminal block to the range chassis. The
ground strap is connected to the range by the center, lowest screw
See Figure 9. The ground strap must not be removed unless National
State or Local Codes do not permit use of a ground strap.
Note: For 3-wire permanent connection skip steps 3 and 4 and
continue with step 5.
3 Disconnect the ground strap. Remove the factory installed
ground screw and plate to release the factory installed copper
ground strap from frame of the range. Cut and discard the
copper strap from the terminal block. KEEP the ground screw,
ground plate and go to step 4.
Note: If the ground strap is removed for any reason, a separate
ground wire must be connected to the separate ground screw
attached to the range chassis and to an adequate ground source
3 & 4-WIRE PERMANENT WIRE CONNECTIONS
3–wire permanent connection – follow steps 1, 2 and 5 below.
4–wire permanent connection – follow all steps below.
Before wiring the range, review the suggested power source location
drawings in Figure 2. If connecting to a 4-wire electrical system:
4 Connect the green ground wire lead to the frame of the range
using the ground screw and plate as shown in Figure 11. Be sure
to install using the same hole in the frame where the ground
screw was originally installed.
1 Follow the manufacturer s Installation Instructions supplied
with the strain relief clamp and install.
5 Make sure all connections are tightened securely and replace
the rear access cover. See Figure 7.
2 Strip insulation away from the ends of the permanent wiring
for line 1, line 2 and neutral; also strip ground wire on 4-wire
Note: Non-terminated field wire compression connections must
be set at approximately 90 in./lbs.
4-WIRE CONNECTION
FOR 3 & 4-WIRE PERMANENT CONNECTIONS
terminal block
Connect
line 2
here.
terminal
block
neutral
A user supplied strainrelief clamp must be
installed at this location.
It requires 1 3/8-inches
(3.5 cm) diameter cord
kit hole.
c
k
gr e
en
Connect green insulated
copper ground wire with
ground screw here.
line 2
line 1
Connect neutral (white
or center) here.
red
bla
ite
wh
Connect line
1 here.
Cut ground strap.
Discard ground strap &
ground plate.
Note: Install strain-relief
clamp. Center or white
wire must always be
attached to the center
terminal on block.
ground strap
ground plate
ground
screw
Figure 10
Figure 8
3-WIRE CONNECTION
4-WIRE PERMANENT CONNECTION ONLY
ground
plate
proper ground for
4-wire permanent
connection
terminal block
Connect line
1 here.
Ground strap
Note: Install strain-relief
clamp. Center or white
wire must always be
attached to the center
terminal on block.
ground
screw
Connect
line 2
here.
ground
wire lead
Connect neutral (white
or center) here.
A user supplied strain-relief
clamp must be installed at
this location. It requires
1 3/8-inches (3.5 cm)
diameter cord kit hole.
Figure 11
Figure 9
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2 DRILL PILOT HOLES AND FASTEN BRACKET
ANTI-TIP DEVICE
NORMAL INSTALLATION STEPS
ANTI-TIP BRACKET INSTALLATION INSTRUCTIONS
IMPORTANT SAFETY WARNING
To reduce the risk of tipping of the range, the range must be secured
to the floor by properly installed Anti-Tip bracket and screws packed
with the range. Failure to install the Anti-Tip bracket will allow the
range to tip over if excessive weight is placed on an open door or if
a child climbs upon it. Serious injury might result from spilled hot
liquids or from the range itself.
If range is ever moved to a different location, the Anti-Tip bracket
must also be moved and installed with the range. Instructions are
provided for installation in wood or cement fastened to either the floor
or wall. When installed to the wall, make sure that screws completely
penetrate dry wall and are secured in wood or metal. When fastening
to the floor or wall, be sure that screws do not penetrate electrical
wiring or plumbing.
Drill a 1/8-inch pilot hole where screws are to be located. If bracket
is to be mounted to the wall, drill pilot hole at an approximate 20
degree downward angle. If bracket is to be mounted to masonry or
ceramic floors, drill a 5/32-inch pilot hole 1 3/4-inches deep. The
screws provided may be used in wood or concrete material. Use a
5/16 -inch nut-driver or flat head screwdriver to secure the bracket
in place.
FASTEN BRACKET
Max 1 1/4"
Leveling Leg
Wall Mount
Wall Plate
Floor Mount
Anti-Tip Bracket
Figure 16
FASTEN BRACKET
1 LOCATE THE BRACKET - USING THE TEMPLATE
(WALL OR FLOOR MOUNTING)
(FLOOR MOUNTING ONLY)
More Than
1 1/4"
Leveling Leg
The bracket may be located on either the left or right side of the
range. Use the information below to locate the bracket if template
is not available.
Wall
Floor Mount
Anti-Tip Bracket
Figure 17
3 LEVEL AND POSITION RANGE
Level range by adjusting the (4) leveling legs with a wrench. Note:
A minimum clearance of 1/8-inch is required between the bottom
of the range and the leveling leg to allow room for the bracket. Use
a level to check your adjustments. Plug range into properly prepared
electrical receptacle or if hard wired, check that it was completed
properly. Check door condition for evenness and stability. Slide
range back into position.
Visually check that rear leveling leg is inserted into and fully secured
by the Anti-Tip bracket by looking underneath the range with a
flashlight and carefully attempt to tilt it forward.
Figure 15
Mark the floor or wall where left or right side of the range will be
located. If rear of range is against the wall or no further than 1 1/4 inches from wall when installed, you may use the wall or floor mount
method. If molding is installed and does not allow the bracket to fit
push against the wall, remove molding or mount bracket to the floor.
For wall mount, locate the bracket by placing the back edge of the
template against the rear wall and the side edge of template on the
mark made referencing the side of the range. Place bracket on top
of template and mark location of the screw holes in wall. If rear of
range is further than 1 1/4-inches from the wall when installed, attach
bracket to the floor. For floor mount, locate the bracket by placing
back edge of the template where the rear of the range will be located.
Mark the location of the screw holes, shown in template.
1 5/8"
Range Slide
Figure 18
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CONTROL LAYOUT
H OT S U R F A C E I N DI C A T OR L I G H T S
C ONT R OL
K NOB S
C ONT R OL
K NOB S
C ONT R OL PANE L
OFF
LO
OFF
HI
LO
OFF
HI
LO
OFF
SMALL
HI
LARGE
HI
HI
MED
Cooktop
MED
MED
Cooktop
MED
OV E N
MED
K EYSHEET
KB-3300JS
11
MIC R OWAV E
LO
LO
KB-3300JS
KB-3300JK
KB-3300JW
Schematic-Off Condition
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㪙㪣㪢
㪙㪣㪢
㪙㪣㪢
㪟㪈
㪚㪦㪥㪫㪩㪦㪣
㪮㪟㪫
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㪰㪣㪮
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㪉
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㪈㪸
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㪮㪟㪫
㧹 㪩㪜㪛
㧹 㪩㪜㪛
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㧹
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㪤㪞
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㪚㪬㪫㪄㪦㪬㪫㩷㪦㪩㪞
㧾㨅㧤
㪮㪟㪫
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㪤㪦㪫㪦㪩
㪙㪩㪥
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㨪㨪
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㪙㪩㪥
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㪩㪜㪛 㧲㧞
㧾㨅㧝
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㪩㪜㪛
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㪟㪜㪘㪫㪜㪩
㪙㪣㪢
㪞㪩㪥
㪦㪩㪞
㪩㪜㪛
㧺㧻㧚
㪫㪦㪧㩷㪟㪜㪘㪫㪜㪩
㪰㪣㪮
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㪩㪜㪛
㪚㪘㪧㪘㪚㪠㪫㪦㪩
㪈㪅㪇㪇㱘㪝
㪘㪚㩷㪉㪊㪇㪇㪭
㪩㪜㪛
㪙㪣㪬
$
㪤㪘㪞㪥㪜㪫㪩㪦㪥
㧮
㪩㪜㪚㪫㪠㪝㪠㪜㪩
㪩㪜㪛
㪦㪭㪜㪥㩷㪫㪜㪤㪧㪅㩷
㪝㪬㪪㪜㩷㩿㪫㪟㪜㪩㪤㪘㪣㩷㪦㪭㪜㪥㪀
12
㧾㨅㧠
㪙㪣㪢
㧭 㧭㧝 㧭㧞
㪥㪅㪚㪅
㧯㧻㧹㧚
㪮㪟㪫
㪙㪣㪬
㧯㧻㧹㧚 㪙㪣㪢
㪙㪩㪥 㧺㧻㧚
㧱㧝
㪙㪣㪢
㪩㪜㪛
㧭
㪩㪜㪛
㪧㪦㪮㪜㪩㩷㪫㪩㪘㪥㪪㪝㪦㪩㪤㪜㪩
㧾㨅㧟
㨪
㪥㪅㪦㪅
㪭㪦㪣㪫㪘㪞㪜㩷㪪㪮㪠㪫㪚㪟
㪙㪩㪥
㪤㪦㪥㪠㪫㪦㪩㩷㪪㪮㪠㪫㪚㪟
㪦㪩㪞
㪙㪣㪢
㪩㪜㪛
㪩㪜㪛
㪙㪣㪢
㪙㪣㪢
㨪㨪
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㧺㧻㧚
㧱 㧱㧢 㧱㧡
㪦㪩㪞
㪙㪩㪥
㨪㨪
㪩㪜㪛
4;$
㪦㪭㪜㪥㩷㪣㪘㪤㪧
㪩㪜㪛
㧱
㪙㪣㪢
㧻㧸
.
4'.#;
㪙㪣㪢
㪙㪣㪢 㪙㪣㪢
㨪
㪙㪣㪬
㪙㪣㪬
㧯㧻㧹㧚
㪦㪩㪞 㪙㪣㪢
㪦㪩㪞
㪪㪫㪠㪩㪩㪜㪩㩷㪤㪦㪫㪦㪩
㧿㧹
4;#
㧻㧸
㪦㪩㪞
㧯㧡
㧾㨅㧡
㧺㧻
㪝㪘㪥㩷㪤㪦㪫㪦㪩
㪮㪟㪫
㪙㪣㪬
㪙㪣㪬
㧲㧝
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㪚㪬㪫㪄㪦㪬㪫㩷 㪦㪩㪞
㪞㪩㪰
㨪
㪛㪦㪦㪩
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㪣㪠㪥㪜㩷㪙㪰㪧㪘㪪㪪㩷㪚㪘㪧㪘㪚㪠㪫㪦㪩
㪇㪅㪇㪇㪊㪊㱘㪝㩷㪉㪌㪇㪭
㪫㪟㪜㪩㪤㪠㪪㪫㪦㪩
㪮㪟㪫
㪤㪠㪚㪩㪦㪮㪘㪭㪜㩷㪛㪩㪘㪮㪜㪩
㪣㪠㪥㪜㩷㪙㪰㪧㪘㪪㪪㩷㪚㪘㪧㪘㪚㪠㪫㪦㪩
㪇㪅㪇㪇㪊㪊㱘㪝㩷㪉㪌㪇㪭
㪙㪣㪢
㪛㪦㪦㪩㩷㪣㪦㪚㪢㩷 㧹
㪰㪣㪮
㪤㪦㪫㪦㪩
㧹 㪙㪩㪥
㪪㪮㪠㪫㪚㪟
㪚㪦㪥㪫㪩㪦㪣㩷㪬㪥㪠㪫
㪥㪦㪠㪪㪜㩷㪪㪬㪧㪩㪜㪪㪪㪠㪦㪥㩷㪚㪦㪠㪣
㧹 㪙㪣㪢
㪛㪦㪦㪩㩷
㪪㪮㪠㪫㪚㪟
㨪㨪 㨪 㨪㨪 㨪㨪
㪣㪠㪥㪜㩷㪚㪩㪦㪪㪪㩷㪚㪘㪧㪘㪚㪠㪫㪦㪩㩷㪈㪅㪇㱘㪝㩷㪉㪎㪌㪭
KB-3300JS
KB-3300JK
KB-3300JW
On condition (Bake & Microwave)
㪣㪉
㪣㪈
㪩㪜㪛
㧾㨅㧠
㪩㪜㪛
㪙㪦㪫㪫㪦㪤
㪟㪜㪘㪫㪜㪩
㪩㪜㪛
㪧㪩㪦㪫㪜㪚㪫㪦㪩
㪮㪟㪫
㪮㪟㪫
㪥
㪟㪦㪫㩷㪪㪬㪩㪝㪘㪚㪜
㪣㪠㪞㪟㪫
㪪㪮㪠㪫㪚㪟㪜㪪
㪮㪟㪫
㪮㪟㪫
㧾㨅㧞 㪧㪩㪠㪤㪘㪩㪰㩷㪠㪥㪫㪜㪩㪣㪦㪚㪢㩷㪩㪜㪣㪘㪰
㪪㪜㪚㪦㪥㪛㪘㪩㪰㩷㪠㪥㪫㪜㪩㪣㪦㪚㪢㩷㪪㪮㪠㪫㪚㪟
㪮㪟㪫
㪙㪣㪬
㪤㪘㪞㪥㪜㪫㪩㪦㪥
㪩㪜㪛
㧺㧻㧚
㪙㪣㪢
㪙㪣㪢 㪙㪣㪢
㪩㪜㪛
㪩㪜㪚㪫㪠㪝㪠㪜㪩
㧾㨅㧝
㪦㪩㪞
㪩㪜㪛
㪧㪦㪮㪜㪩㩷㪫㪩㪘㪥㪪㪝㪦㪩㪤㪜㪩
㪥㪅㪚㪅
㪥㪅㪦㪅
㪙㪩㪥
㪙㪩㪥
㪙㪣㪢
㪙㪩㪥
㪞㪩㪰
㪤㪦㪥㪠㪫㪦㪩㩷㪪㪮㪠㪫㪚㪟
㧾㨅㧡
㧲㧝
㧯㧻㧹㧚
㪙㪩㪥
㪞㪩㪰
㧸
㪚㪘㪧㪘㪚㪠㪫㪦㪩
㪈㪅㪇㪇 㱘㪝
㪘㪚㩷㪉㪊㪇㪇㪭
㪙㪣㪢
㪙㪣㪬
㪙㪣㪬
㪮㪟㪫
㪦㪩㪞
㪉㪹
㪮㪟㪫
㪙㪣㪢
㪉㪹
㪈㪹
㪮㪟㪫
㧯㧻㧹㧚
㪙㪣㪢
4;#
㪈㪹
㪙㪩㪥
㧺㧻
㪙㪣㪢
㪙㪣㪢
㪙㪣㪢
㪙㪣㪬
㨪
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㪉㪹
㨪㨪
㪦㪩㪞 㪙㪣㪢
㧿㧹
㪦㪩㪞
㪪㪫㪠㪩㪩㪜㪩㩷㪤㪦㪫㪦㪩
㪈㪹
㧯㧝
㪩㪜㪛
㪩㪜㪛
㨪
㪮㪟㪫
㪙㪣㪬
㪩㪩
㪰㪣㪮
㨪
㧲㧹
㪣㪝
㪣㪩
㪙㪣㪢
㪙㪣㪬
㨪
㪝㪘㪥㩷㪤㪦㪫㪦㪩
㪙㪣㪬
㪉㪹
㪙㪣㪬
㪈㪹
㪙㪣㪢
㪩㪝
㪙㪣㪢
㪟㪦㪫㩷㪪㪬㪩㪝㪘㪚㪜㩷㪣㪠㪞㪟㪫
㪚㪦㪥㪫㪩㪦㪣㩷㪬㪥㪠㪫
㪩㪜㪛 㧲㧞
㪩㪜㪛
㪧㪩㪦㪫㪜㪚㪫㪦㪩
㧲㧟
㪙㪩㪥
㪮㪟㪫
㪝㪬㪪㪜
㪉㪇㪘
㪣㪉
㪟㪉
㪉㪸
$
㧮
㨪
㨪
㪈㪸
㪙㪩㪥
㪣㪠㪥㪜㩷㪙㪰㪧㪘㪪㪪㩷㪚㪘㪧㪘㪚㪠㪫㪦㪩
㪇㪅㪇㪇㪊㪊 㱘㪝㩷㪉㪌㪇㪭
㪣㪜㪝㪫㩷㪩㪜㪘㪩
㪪㪬㪩㪝㪘㪚㪜
㪜㪣㪜㪤㪜㪥㪫
㪉
㪥㪦㪠㪪㪜㩷㪪㪬㪧㪩㪜㪪㪪㪠㪦㪥㩷㪚㪦㪠㪣
㪚㪦㪥㪫㪩㪦㪣
㪈
㪩㪜㪛
㧸
㪞㪩㪥
㪩㪜㪛
㪟㪬㪤㪠㪛㪠㪫㪰㩷
㩷㩷㪪㪜㪥㪪㪦㪩
㪩㪜㪛
㪤㪞
㪫㪟㪜㪩㪤㪘㪣
㪚㪬㪫㪄㪦㪬㪫㩷㪦㪩㪞
㧹㧟
㪩㪜㪛
㪩㪜㪛
㪧㪩㪦㪫㪜㪚㪫㪦㪩
㪛㪦㪦㪩
㪪㪜㪥㪪㪠㪥㪞
㪪㪮㪠㪫㪚㪟
㧹㧝 㪮㪟㪫
㪮㪟㪫
㪣㪜㪝㪫㩷㪝㪩㪦㪥㪫
㪪㪬㪩㪝㪘㪚㪜
㪜㪣㪜㪤㪜㪥㪫
㪦㪭㪜㪥
㪫㪟㪜㪩㪤㪘㪣
㪚㪬㪫㪄㪦㪬㪫㩷 㪦㪩㪞
㪣㪉
㪣㪠㪥㪜㩷㪙㪰㪧㪘㪪㪪㩷㪚㪘㪧㪘㪚㪠㪫㪦㪩
㪇㪅㪇㪇㪊㪊 㱘㪝㩷㪉㪌㪇㪭
㪉㪸
㪧
㪟㪈
㪮㪟㪫
㪈㪸
㪙㪣㪢
㪰㪣㪮
㪣㪈
㪉
㪣㪠㪥㪜㩷㪚㪩㪦㪪㪪㩷㪚㪘㪧㪘㪚㪠㪫㪦㪩㩷㪈㪅㪇
㱘㪝㩷㪉㪎㪌㪭
㪈
㪚㪦㪥㪫㪩㪦㪣
㪙㪣㪢
㪮㪟㪫
㪩㪜㪛
㪟㪉
㪩㪜㪪㪠㪪㪫㪦㪩㩷㪋㪎㪇㩷㫂㱅㩷㪈㪆㪉㪮
㪙㪣㪢
㪟㪈
㧻㧸
㪠㪥㪛㪠㪚㪘㪫㪦㪩㩷㪣㪠㪞㪟㪫
㪧
㪰㪣㪮㪁㪉 㪰㪣㪮
㪭㪦㪣㪫㪘㪞㪜㩷㪪㪮㪠㪫㪚㪟
㪙㪣㪬
㪙㪣㪬
㪣㪈
㪙㪣㪢
㪦㪩㪞
㪙㪣㪢
㪰㪣㪮
㧭 㧭㧝 㧭㧞
㧭
㪙㪣㪢
㪙㪣㪬
㪙㪣㪢
㪮㪟㪫
㪩㪜㪛
㪩㪜㪛
㪚㪦㪦㪢㩷㪫㪦㪧
㪥
㪦㪭㪜㪥㩷㪫㪜㪤㪧㪅㩷
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㪩㪜㪛
㪫㪦㪧㩷㪟㪜㪘㪫㪜㪩
.
4'.#;
㪩㪜㪛
㪦㪩㪞
㧯㧻㧹㧚
㧱㧝
㧺㧻㧚
㨪
㪞㪩㪥
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4;$
㪙㪣㪢
㪦㪩㪞
㪙㪩㪥
㪩㪜㪛
㪙㪩㪥 㧺㧻㧚
㨪㨪
㧱㧢 㧱㧡
㧻㧸
㪩㪜㪛
㪦㪩㪞
㧱
㪮㪟㪫
㪮㪟㪫
㧸㧹
㪦㪭㪜㪥㩷㪣㪘㪤㪧
㧲㧹
㧾㨅㧟
㧾㨅㧣
㧾㨅㧤
㪛㪦㪦㪩㩷㪣㪦㪚㪢㩷
㪤㪦㪫㪦㪩
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㪋㪸
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㪤㪠㪚㪩㪦㪮㪘㪭㪜㩷㪛㪩㪘㪮㪜㪩
On condition (Broil & Microwave)
㪣㪉
㪣㪈
㪩㪜㪛
㧾㨅㧠
㪫㪦㪧㩷㪟㪜㪘㪫㪜㪩
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㪤㪠㪚㪩㪦㪮㪘㪭㪜㩷㪛㪩㪘㪮㪜㪩
13
㪙㪣㪬
㪰㪣㪮
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㧺㧻㧚
㪙㪣㪬
㪤㪘㪞㪥㪜㪫㪩㪦㪥
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㪥㪅㪦㪅
㪙㪩㪥
㪙㪩㪥
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㪈㪅㪇㪇 㱘㪝
㪘㪚㩷㪉㪊㪇㪇㪭
㪩㪩
㪙㪣㪢
㪙㪣㪬
㪮㪟㪫
4;#
㪉㪹
㪙㪣㪢
㪮㪟㪫
㧯㧻㧹㧚
㪙㪣㪢
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㪙㪣㪬
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㪩㪜㪛 㧲㧞
㪩㪜㪛
㧲㧟
㪣㪉
㪙㪩㪥
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㪟㪉
㪉㪸
㪧㪩㪦㪫㪜㪚㪫㪦㪩
$
㧮
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㪈
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㪇㪅㪇㪇㪊㪊 㱘㪝㩷㪉㪌㪇㪭
㪩㪜㪛
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㱘㪝㩷㪉㪎㪌㪭
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㪙㪣㪢
㪟㪈
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㪙㪣㪢 㪙㪣㪢
㪧
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㪙㪣㪬
㪙㪣㪬
㪣㪈
㪙㪣㪢
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㧭 㧭㧝 㧭㧞
㧭
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.
4'.#;
㪩㪜㪛
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㪣㪈
KB-3300JS
KB-3300JK
KB-3300JW
COOK TOP SCHEMATIC (DETAIL)
㪣㪉
㪣㪉
㪰㪣㪮
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14
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KB-3300JS
KB-3300JK
KB-3300JW
KB-3300JS
KB-3300JK
KB-3300JW
RANGE SCHEMATIC (DETAIL)
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16
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TEST PROCEDURES
PROCEDURE
LETTER
A
KB-3300JS
KB-3300JK
KB-3300JW
COMPONENT TEST
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 three units, Control Unit and
Keyboard 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 disassemble as per "OVEN/MICROWAVE DRAWER
DISASSEMBLY" page 38.
2) Open the drawer 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.
1. Keyboard Unit.
NOTE ;
1) Check Keyboard glass unit connection before replacement.
2) Reconnect all leads removed from components during testing.
3) Re-install the covers.
4) Reconnect the power supply cord after the covers are installed.
5) Run the oven and check all functions.
The following symptoms indicate a defective keyboard 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 Keyboard unit is defective.
1) Disconnect the power supply cord, and then remove covers.
2) Open the drawer and block it open.
3) Discharge high voltage capacitor.
4) Replace the Keyboard glass unit.
5) Reconnect all leads removed from components during testing.
6) Re-install the covers.
7) Reconnect the power supply cord after the covers are 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 Keyboard glass unit test (Procedure B) to determine if control unit is faulty.
2-1 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.
2-2 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.
3. Power Unit or Touch Control Transformer
a) Fan motor, stirrer motor, oven lamp or electrical parts do not turn on or do not turn off.
b) Digital display on the control unit does not show anything.
When testing is completed,
1) Disconnect the power supply cord, and then disassemble as per "OVEN/MICROWAVE DRAWER
DISASSEMBLY" page 38.
2) Open the drawer and block it open.
3) Discharge high voltage capacitor.
17
KB-3300JS
KB-3300JK
KB-3300JW
TEST PROCEDURES
PROCEDURE
LETTER
COMPONENT TEST
4)
5)
6)
7)
B
Reconnect all leads removed from components during testing.
Re-install the covers.
Reconnect the power supply cord after the covers are installed.
Run the oven and check all functions.
KEYBOARD GLASS UNIT TEST
1. Disconnect the power supply cord, and then reconnect power supply cord. Display should show the
word; “WAIT” in either one or both displays.
2. Immediately press the following keys within 20 seconds (Use flat part of thumb or finger):
“Power Level” then “Timer Clock” then “Start / Auto Minutes” then “Stop Clear”.
Test mode should start scrolling through each digit.
3. After each digit is confirmed, press every key on Keyboard Glass unit (within 50 seconds).
4. After every key is pressed, open Microwave Drawer and verify the following display:
FFFE
OVEN display
KEYFFFF
MICROWAVE display
If any other code is displayed, one or more Key Units are bad and the Keyboard Glass unit will need
to be replaced.
5. Remove the old keyboard glass unit (see page 38) and install the new keyboard glass unit (as the
normal keyboard unit).
6. Reconnect the wire harness to the keyboard glass unit.
7. Repeat steps 1 - 4 to confirm Keyboard Glass Unit is working properly.
8. Re-install the covers (confirm cooktop wires are tucked under microwave cavity lip as shown on
p.38).
9. Reconnect the power supply cord after the covers are installed.
10.Run the oven and check all functions.
C
RELAY TEST
1. Disconnect the power supply cord, and then disassemble as per "OVEN/MICROWAVE DRAWER
DISASSEMBLY" page 38.
2. Open the drawer 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. Remove the covers and check voltage between Pin Nos. 1 and 3 of the 2 pin connector (CN-B) on the
power unit with an A.C. voltmeter.
The meter should indicate 116 or 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
RY1
RY2
RY3
RY4
RY5
RY6
RY7
RY8
RY-B
TEST POINT
OPERATIONAL VOLTAGE
H6
H4
H7
H8
H9
H10
H11
H15
H14
Approx. 18V D.C.
Approx. 18V D.C.
Approx. 18V D.C.
Approx. 18V D.C.
Approx. 24V D.C.
Approx. 24V D.C.
Approx. 24V D.C.
Approx. 24V D.C.
Approx. 24V D.C.
18
CONNECTED COMPONENTS
Oven lamp / Stirrer motor
Power transformer
Oven common relay
Top heater
Fan motor (Microwave)
Fan motor (Oven)
Oven lamp (Oven)
Door lock motor
Bottom heater
KB-3300JS
KB-3300JK
KB-3300JW
TEST PROCEDURES
PROCEDURE
LETTER
COMPONENT TEST
8.Disconnect the power supply cord, and then remove covers.
9.Open the drawer and block it open.
10.Discharge high voltage capacitor.
11.Reconnect all leads removed from components during testing.
12.Re-install the covers.
13.Reconnect the power supply cord after the covers are installed.
14.Run the oven and check all function.
D
DEFROST TEST
WARNING : The oven should be fully assembled before following procedure.
(1) Place one cup of water in the center of the tray in the oven cavity.
(2) Close the drawer, touch the Defrost pad. Then select Steaks/Chops by touching the number pad 2.
And touch the number pad 5. (Now, weight 0.5lb is set.) And then touch the start pad.
(3) The oven is in Defrost cooking condition.
(4) The oven will operate as follows
WEIGHT
0.5lb
1ST STAGE
LEVEL
TIME
60%
20sec.
2ND STAGE
LEVEL
TIME
40%
20sec.
3RD. STAGE
LEVEL TIME
30%
45sec.
(5) If improper operation is indicated, the control unit is probably defective and should be checked.
E
PROCEDURES TO BE TAKEN WHEN THE FUSE ON THE PRINTED WIRING BOARD (PWB) IS
OPEN.
To protect the electronic circuits, this model is provided with a fuse added to the primary on the PWB.
1. Fuse check and repairs.
1) Disconnect the power supply cord.
2) Remove the covers.
3)
4)
5)
6)
7)
8)
9)
10)
11)
Open the drawer and block it open.
Discharge high voltage capacitor.
If the Fuse is blown, replace power unit.
Make a visual inspection of the varistor. Check for burned damage. If the varistor has been burned,
replace the power unit.
Examine the touch control transformer with a tester for the presence of layer short-circuit (check
the primary coil resistance which is approximately 60Ω ± 10%). If any abnormal condition is
detected, replace the touch control transformer.
Reconnect all leads removed from components during testing.
Re-install the covers.
Reconnect the power supply cord after the covers are installed.
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.
2) Remove the covers.
3)
4)
5)
6)
Open the drawer 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.
7) After that procedure, re-connect the power supply cord.
8) Follow the troubleshooting guide given below for repair.
STEPS
OCCURRENCE
CAUSE OR CORRECTION
1
The rated AC voltage is not present between Check supply voltage and oven power cord.
Pin Nos. 1and 3 of the 2-pin connecter (CN-B).
2
The rated AC voltage is present at primary
side of touch control transformer.
19
Touch control transformer or secondary circuit defective.
Check and replace touch control transformer or power
unit .
KB-3300JS
KB-3300JK
KB-3300JW
TEST PROCEDURES
PROCEDURE
LETTER
COMPONENT TEST
9)
10)
11)
12)
13)
14)
15)
F
Disconnect the power supply cord, and then remove the covers.
Open the drawer and block it open.
Discharge high voltage capacitor.
Reconnect all leads removed from components during testing.
Re-install the covers.
Reconnect the power supply cord after the covers are installed.
Run the oven and check all functions.
AH SENSOR TEST
Checking the initial sensor cooking condition
WARNING : The oven should be fully assembled before following procedure.
(1) The oven should be plugged in at least two minutes before sensor cooking.
ο
ο
(2) Room temperature should not exceed 95 F (35 C).
(3) The unit should not be installed in any area where heat and steam are generated. The unit should not be
installed, for example, next to a conventional surface unit. Refer to the “INSTALLATION INSTRUCTIONS”
of the operation manual.
(4) Exhaust vents are provided on the back of the unit for proper cooling and air flow in the cavity. To permit
adequate ventilation, be sure to install so as not to block these vents. There should be some space for
air circulation.
(5) Be sure the exterior of the cooking container and the interior of the oven are dry. Wipe off any moisture
with a dry cloth or paper towel.
(6) The Sensor works with food at normal storage temperature. For example, chicken pieces would be at
refrigerator temperature and canned soup at room temperature.
(7) Avoid using aerosol sprays or cleaning solvents near the oven while using Sensor settings. The sensor
will detect the vapor given of by the spray and turn off before food is properly cooked.
(8) If the sensor has not detected the vapor of the food, ERROR will appear and the oven will shut off.
Water load cooking test
WARNING : The oven should be fully assembled before following procedure.
Make sure the oven has been plugged in at least two minutes before checking sensor cook operation. The
cabinet should be installed and screws tightened.
(1) Fill approximately 200 milliliters (7.2 oz) of tap water in a 1000 milliliter measuring cup.
(2) Place the container on the center of tray in the oven cavity.
(3) Close the drawer.
(4) Touch the TIMER/CLOCK pad once, the POWER LEVEL pad twice and the START pad once. And touch
the number pads 1 once and the number pad 4 once. Now, the oven is in the sensor cooking condition,
and "AH20" and "ON" will appear in the display.
(5) The oven will operate for the first 16 seconds, without generating microwave energy.
NOTE: ERROR will appear if the door is opened or STOP/CLEAR pad is touched during first stage of sensor
cooking.
(6) After approximately 16 seconds, microwave energy is produced.
If ERROR is displayed or the oven does not turn off, replace the AH sensor or check the control unit, refer to
explanation below. If the oven stops after 5 minutes and no ERROR code is displayed, then the AH sensor
is normal. Check other parts except the AH sensor.
TESTING METHOD FOR AH SENSOR AND/OR CONTROL UNIT
To determine if the sensor is defective, the simplest method is to replace it with a new replacement sensor.
(1) Disconnect the power supply cord, and then disassemble as per "OVEN/MICROWAVE DRAWER
DISASSEMBLY" page 38.
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
Open the drawer and block it open.
Discharge high voltage capacitor.
Remove the AH sensor.
Install the new AH sensor.
Reconnect all leads removed from components during testing.
Re-install the covers.
Reconnect the power supply cord after the covers are installed.
Reconnect the oven to the power supply and check the sensor cook operation as follows:
9-1. Fill approximately 200 milliliters (7.2 oz) of tap water in a 1000 milliliter measuring cup.
20
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LETTER
COMPONENT TEST
9-2. Place the container on the center of tray in the oven cavity.
9-3. Close the door.
9-4. Touch the TIMER/CLOCK pad once, the POWER LEVEL pad twice and the START pad once. And
touch the number pads 1 once and the number pad 4 once.
9-5. The control panel is in automatic Sensor operation.
9-6. The oven turns off automatically, and the time for detecting moisture will be displayed.
If new sensor does not operate properly, the problem is with the control unit, and refer to explanation below.
CHECKING CONTROL UNIT
(1) Disconnect the power supply cord, and then disassemble as per "OVEN/MICROWAVE DRAWER
DISASSEMBLY" page 38.
(2) Open the drawer and block it open.
(3) Discharge high voltage capacitor.
(4) Disconnect the sensor connector that is mounted to control panel.
(5) Then connect the dummy resistor circuit (see fig.) to the sensor connector of control panel.
(6) Disconnect the leads to the primary of the power transformer.
(7) Ensure that these leads remain isolated from other components and oven chassis by using insulation tape.
(8) After that procedure, re-connect the power supply cord.
(9) Check the sensor cook operation proceed as follows:
9-1. Close the door. Touch the TIMER/CLOCK pad once, the POWER LEVEL pad twice and the START
pad once. And touch the number pads 1 once and the number pad 4 once.
9-2. The control panel is in the sensor cooking operation.
9-3. After approximately 25 seconds, push plunger of select switch for more than 3 seconds. This
condition is same as judgement by AH sensor.
9-4. After approximately 3 seconds, the display shows “ X X . X X “ which is the time for detecting moisture.
If the above is not the case, the control unit is probably defective.
If the above is proper, the AH sensor is probably defective.
(10) Disconnect the power supply cord, and then remove covers.
(11) Open the drawer and block it open.
(12) Discharge high voltage capacitor.
(13) Disconnect the dummy resistor circuit from the sensor connector of control panel.
(14) Carry out necessary repair.
(15) Reconnect all leads removed from components during testing and repairing.
(16) Re-install the covers.
(17) Reconnect the power supply cord after the outer case is installed. Run the oven and check all functions.
(18) Carry out "Water load cooking test" again and ensure that the oven works properly.
R1, R2 : 22Ω ± 1% 1/2W
R3 : 4.3kΩ ± 5% 1/4W
R4 : 1MΩ ± 5% 1/4W
Plunger
NC
NO
F-1
F-2
To connector (F)
on Control Unit.
1
2
3
COM
COM
NO
R1
F-3
R2
CONNECTOR
R3
R4
Sensor Dummy Resistor Circuit
21
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TEST PROCEDURES
PROCEDURE
LETTER
G
COMPONENT TEST
SURFACE ELEMENT CONTROL SYSTEMS
Di al Posit ion
Contacts
Two types of surface elements control systems are
covered in this manual.
1.
Standard infinite switch.
2.
Dual infinite switch.
OFF
LO-MED
HI
L1 - P
O
X
X
L1 - H 1
O
X
X
L2 - H 2
O
X- C
X
O
- open
X
- closed
Standard infinite switch:
The surface elements and standard infinite switches provide an infinite choice of heat settings for cooking. Controls are safety type and must be pushed in before turning. All surface controls are marked on the control panel
for their respective heating element. Power is supplied
to the surface elements through the infinite switch contacts L1-H1 and L2-H2. During actual surface element
operation, if the control is set to the high position contacts L2-H2 are lock closed providing continuous power
to the element. In all other setting contacts L2-H2 will
cycle to maintain the correct heat setting. Contacts L1P provide power to the surface element indicator light.
Element does not heat:
Checking the system with a Voltmeter, if the element
does not heat up.
Troubleshooting:
1.
Remove the back of the control panel to
expose the switch terminals.
There are four ways a surface control system with a
standard infinite switch can fail.
2.
With a Voltmeter set for AC on a scale higher
than 240 Volts measure the voltage drop
between terminals L1 and L2. If the meter
reads zero the wiring between the main
terminal block on the range and the switch is
open. If the meter reads line to line voltage
(around 240 VAC) go to step 3.
3.
With the switch turned to the high position
measure the voltage drop between terminals
H1 and H2. If the meter reads zero the switch
is defective. If the meter reads line to line
voltage the switch is good. If the range has
standard elements go to step 4. If the range
has a glass smooth go to step 5.
4.
Remove the element and measure the
voltage drop between terminals of the terminal
block. If the meter reads zero the terminal
block or the wiring between the switch and the
terminal block is open. If the meter reads line
to line voltage the element is defective.
1.
The element does not heat.
2.
The switch does not cycle the element off and
on when set to a position other than high.
3.
The element operates correctly, but the
indicator light does not glow.
4.
Indicator light glows with all infinite switches
in the off position.
NOTE: If the indicator light glows very dimly
with all the switches in the off position. This
problem is caused by a capacitive feed over in
the wiring and can be corrected by connecting
a 100,000 Ohm 1/4 watt resistor in parallel with
the light.
Continuity tests can be performed on the infinite switch
contacts. All tests should be performed with power to
the range disconnected, and wiring removed from the
switch. Set an ohmmeter on R X 1K scale and check
the contacts in the following chart and switch terminal
diagram.
NOTE: Always inspect the terminal block for
burnt spots that can cause poor connection.
5.
22
Raise the top and locate the two terminals on
the element that the wires from H1 and H2 are
on. Measure the voltage drop between the two
terminals. If the meter reads zero the wires
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TEST PROCEDURES
PROCEDURE
LETTER
COMPONENT TEST
between the switch and the element are open.
If the meter reads line to line voltage the
element is defective.
Element does not cycle:
If the element does not cycle when the switch is set in a
position other than high the switch is defective.
Indicator light does not glow:
If indicator light does not glow when the switch is turned
on, remove the back panel of the backguard, turn the
switch on, and measure the voltage drop between terminals P and L2. If the meter reads zero the switch is
defective. If the meter reads line to line voltage (around
240 VAC) the light or the wiring to the light is defective.
Indicator light glows full brilliance with all top
element switches off:
If indicator light glows full brilliance with all top element
switches off, one or more of the switches are defective.
Disconnect electrical power from the range, and remove
the back panel of the backguard. Disconnect the wire
from the P terminal on all switches but one switch. Reconnect power. If the indicator light glows with the switch
in the off position, the switch is defective. If the indicator
light does not glow, the switch is good. Check each
switch by disconnecting the wires from all the other P
terminals but the switch you are testing.
S2
S1
providing power to both elements. When the knob is
turned counterclockwise, less than 180 degrees, contacts P2 to 4 and P1 to 2 close providing power to the
inner element. During actual surface element operation, if the control is set to the high position contacts P1
to 2 are locked closed providing continuous power to
the element. In all other settings contacts P1 to 2 will
cycle to maintain the correct heat setting. Contact 4 to
L2 provides power to the surface element indicator light.
See Cook Surface Schematic, Fig. 1
Dual infinite switch:
The dual infinite switch is used to control the expandable and bridge elements on electric smooth top ranges.
The dual infinite switches provide an infinite choice of
heat settings for cooking, and two selection of element
sizes. Controls are safety type and must be pushed in
before turning. All surface controls are marked on the
control panel for their respective heating element.
When the knob is turned clockwise, less than 180 degrees, contacts P2 to 4, P2 to 4A, and P1 to 2 closes
SMALL
ELEMENT
LARGE
ELEMENT
Troubleshooting:
There are six ways a surface control system with a dual
infinite switch can fail.
1.
Both elements do not heat.
2.
The outer element does not heat.
3.
The inner element does not heat.
4.
The switch does not cycle the element off and
on when set to a position other than high.
5.
The element operates correctly, but the
indicator light does not glow.
6.
Indicator light glows with all the infinite switches
in the off position.
NOTE: If the indicator light glows very dimly
with all the switches in the off position. This
problem is caused by a capacitive feed over in
the wiring and can be corrected by connecting
a 100,000 Ohm 1/4 watt resistor in parallel with
the light.
23
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TEST PROCEDURES
PROCEDURE
LETTER
Both elements do not heat:
COMPONENT TEST
2.
With the switch turned clockwise to the high
position measure the voltage drop between
terminals 4 and 2. If the meter reads zero
the switch is defective. If the meter reads line
to line voltage, go to step 3.
Remove the back panel of the backguard to
expose the switch terminals.
3.
With a Voltmeter set for AC and a scale higher
than 240 Volts measure the voltage drop
between terminals P1 and P2. If the meter
reads zero the wiring between the main
terminal block on the range and the switch is
open. If the meter reads line to line voltage
(around 240 VAC) go to step 3.
Raise the top and locate the two terminals on
the element where the wires from terminals 4
and 2 are connected. Measure the voltage drop
between these two terminals. If the meter reads
zero the wires between the switch and the
element are open. If the meter reads line to
line voltage the element is defective.
Elements do not cycle:
Checking the system with a Voltmeter, if the elements
do not heat up:
1.
2.
3.
4.
With the switch turned clockwise to the HI
position, measure the voltage drop between
terminals 4 and 2. If the meter reads zero the
switch is defective. If the meter reads line to
line voltage measure the voltage drop between
terminals 4A and 2. If the meter reads line to
line voltage the switch is good. Go to step 4.
Raise the top and locate the two terminals on
the element with the wires from terminals 4
and 2 are connected. Measure the voltage drop
between these two terminals. If the meter reads
zero the wires between the switch and the
element are open. If the meter reads line to
line voltage the element is defective.
Outer element doesn’t heat, but inner element does:
Checking the system with a Voltmeter, if the outer element does not heat, but the inner element does:
1.
Remove the back panel of the backguard to
expose the switch terminals.
2.
With the switch turned clockwise to the high
position measure the voltage drop between
terminals 4A and 2. If the meter reads zero
the switch is defective. If the meter reads line
to line voltage, go to step 3.
3.
Raise the top and locate the two terminals on
the element where the wires from terminals 4A
and 2 are connected. Measure the voltage drop
between these two terminals. If the meter reads
zero the wires between the switch and the
element are open. If the meter reads line to
line voltage the element is defective.
If the elements do not cycle when the switch is set in a
position other than high the switch is defective.
Indicator light does not glow:
If indicator light does not glow when the switch is turned
on, remove the back panel of the backguard, turn the
switch on, and measure the voltage drop between terminals 4 and L2. If the meter reads zero the switch is
defective. If the meter reads line to line voltage (around
240VAC) the light or the wiring to the light is defective.
Indicator light glows full brilliance with all top element switches off:
If indicator light glows full brilliance with all top element
switches off, one or more of switches are defective. Disconnect electrical power from the range, and remove the
back panel of the backguard. Disconnect the wire from
terminal 4 on the switches from all but one switch. Reconnect power. If the indicator light glows with the switch
in the off position the switch is defective. If the indicator
light does not glow the switch is good. Check each dual
infinite switch by disconnecting the wires from all the
other 4 terminals but the switch you are testing.
Inner element doesn’t heat, but outer element does:
S2
S1
Checking the system with a Voltmeter, if the inner element does not heat, but the outer element does:
1.
See Cook Surface Schematic, Fig. 1
Remove the back panel of the backguard to
expose the switch terminals.
24
TEST PROCEDURES
PROCEDURE
LETTER
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COMPONENT TEST
Refer to the disassembly instructions found on Page 16.
H
MAGNETRON ASSEMBLY TEST
1.
2.
3.
4.
5.
6.
7.
8.
9.
Disconnect the power supply cord.
Open the drawer and keep it open.
To discharge high voltage capacitor, wait for 60 seconds.
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.
Reassemble the unit.
Reconnect the power supply cord.
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.
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: inverter unit. 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.
ο
4. Subtract the cold water temperature from the hot water temperature. The normal result should be 60.8
ο
ο
ο
to 86 F(16 to 30 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.
I
OVEN THERMAL CUT-OUT TEST
1.
2.
3.
4.
Disconnect the power supply cord.
Open the drawer and keep it open.
To discharge high voltage capacitor, wait for 60 seconds.
A continuity check across the thermal cut-out terminals should indicate a closed circuit unless the
ο
ο
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.
5. Reconnect all leads removed from components during testing.
6. Reassemble the unit.
7. Reconnect the power supply cord.
8. Run the unit and check all functions.
CAUTION: IF THE THERMAL CUT-OUT INDICATES AN OPEN CIRCUIT AT ROOM TEMPERATURE,
REPLACE THERMAL CUT-OUT.
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TEST PROCEDURES
PROCEDURE
LETTER
J
COMPONENT TEST
SECONDARY INTERLOCK SWITCH TEST
1.
2.
3.
4.
Disconnect the power supply cord.
Open the drawer and keep it open.
To discharge high voltage capacitor, wait for 60 seconds.
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 drawer open and a closed circuit with
the drawer closed. If improper operation is indicated, replace the secondary interlock switch.
5. Reconnect all leads removed from components during testing.
6. Reassemble the unit.
7. Reconnect the power supply cord.
8. Run the oven and check all functions.
K
STOP SWITCH TEST
STOP SWITCH
1. Disconnect the power supply cord.
2. Open the drawer and keep it open.
3. To discharge high voltage capacitor, wait for 60 seconds.
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 drawer open and a closed circuit with
the drawer closed. If improper operation is indicated, replace the stop switch.
5. Reconnect all leads removed from components during testing.
6. Reassemble the unit.
7. Reconnect the power supply cord.
8. Run the oven and check all functions.
NOTE: If the stop 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.
L
MONITOR SWITCH TEST
1.
2.
3.
4.
Disconnect the power supply cord.
Open the drawer and keep it open.
To discharge high voltage capacitor, wait for 60 seconds.
Before performing this test, make sure that the secondary interlock switch, 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 drawer 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 with the drawer 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 and both the monitor switch, plus fuse will need
to be replaced. After testing the monitor switch, reconnect the wire lead to the monitor switch (COM)
terminal and check the continuity of the monitor circuit.
5. Reconnect all leads removed from components during testing.
6. Reassemble the unit.
7. Reconnect the power supply cord.
8. Run the oven and check all functions.
MONITOR
SWITCH
(BLK)
Screw Driver
(RED)
Ohmmeter
(BRN,GRY)
(BRN,BLK)
SECONDARY
INTERLOCK
SWITCH
26
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TEST PROCEDURES
PROCEDURE
LETTER
M
COMPONENT TEST
BLOWN MONITOR FUSE TEST
1.
2.
3.
4.
Disconnect the power supply cord.
Open the drawer and block it open.
To discharge high voltage capacitor, wait for 60 seconds.
If the monitor fuse is blown when the drawer is opened, check the primary interlock switch, 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 SECONDARY INTERLOCK
SWITCH, STOP 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-BA018/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. Reassemble the unit.
7. Reconnect the power supply cord.
8. Run the oven and check all functions.
N
POWER TRANSFORMER TEST
1.
2.
3.
4.
Disconnect the power supply cord.
Open the drawer 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 90 ohms; the resistance of the filament coil should be less than 1 ohm.
5. Reconnect all leads removed from components during testing.
6. Reassemble the unit.
7. Reconnect the power supply cord.
8. Run the oven and check all functions.
(HIGH VOLTAGES ARE PRESENT AT THE HIGH VOLTAGE TERMINAL, SO DO NOT ATTEMPT TO
MEASURE THE FILAMENT AND HIGH VOLTAGE.)
O
FAILURE CODES
The following failure codes will be displayed on the Control Panel.
EE 6
(displayed when oven starts) -
Oven Thermistor is open.
Check thermistor or control unit.
EE 7
(displayed when oven starts) -
Oven Thermistor is shorted.
Check thermistor or control unit.
EE L
(displayed after 1 minute of cooking or self cleaning) -
Lower door lock error.
Check lock motor, lock switch (RY 8) or control unit.
SPECAIL FAILURE NOTE:
During the Microwave Drawer operation, if it goes dead, check each Thermal Cut-out first.
This is due to the whole control unit being powered by Line L1 (refer to Schematic on page 13).
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TOUCH CONTROL PANEL ASSEMBLY
OUTLINE OF TOUCH CONTROL PANEL
10) Indicator Circuit
A circuit to drive the Liquid Crystal Displays (LCD1,
LCD2).
The touch control section consists of the following units.
(1) Keyboard unit
(2) Control Unit
(3) Power unit
11) Power Source Circuit
This circuit generates voltages necessary in 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.
The principal functions of these units and the signals communicated among them are explained below.
Keyboard unit
The keyboard unit is composed of a matrix, signals generated in the LSI are sent to the keyboard unit . When a key pad
is touched, a signal is completed through the keyboard unit
and passed back to the LSI to perform the function that was
requested.
Symbol
Voltage
VC
+5V
Application
LSI(IC1)
12) Relay Circuit
A circuit to drive the magnetron, fan motor, stirrer motor,
door lock motor, bottom heater, top heater and light the
oven lamp.
Control Unit and Power Unit
Control unit consists of LSI, IC, reset circuit, indicator circuit,
power source circuit, relay circuit, buzzer circuit, synchronizing signal circuit, keyboard unit circuit, humidity sensor
circuit and back light circuit.
13) Buzzer Circuit
The buzzer is responsive to signals from the LSI to emit
audible sounds (key touch sound and completion sound).
2) IC2
This is the IC to drive the Liquid Crystal Display (LCD1).
14) Synchronizing Signal Circuit
The power source synchronizing signal is available in
order to compose a basic standard time in the clock
circuit.
It accompanies a very small error because it works on
commercial frequency.
3) IC3
This is the IC to drive the Liquid Crystal Display (LCD2).
15) Door Sensing Switch (Microwave drawer)
A switch to “tell” the LSI if the drawer is open or closed.
4) IC4
This is the IC to judge the selected key.
16) Door Switch (Oven)
A switch to “tell” the LSI if the oven door is open or closed.
5) IC5
This is the IC to amplify the signal from the humidity
sensor.
17) Door Lock Monitor Switch (Oven)
A switch to “tell” the LSI if the oven door is locked or not.
1) IC1 (LSI)
This is a microcomputer, responsible for controlling the
entire control unit.
18) Back Light Circuit
A circuit to drive the back light (Light emitting diodes
LD1- LD6).
6) IC6
This is memory IC.
19) Humidity Sensor Circuit
This circuit detects moisture of the cooking food to allow
its automatic cooking.
7) IC7
This is the IC to drive the relays.
8) IC8
This is the IC to drive the relays.
20) Temperature Measurement Circuit : (OVEN THERMISTOR)
The temperature in the oven cavity is sensed by the
thermistor. The variation of resistance according to
sensed temperature is detected by the temperature
measurement circuit and the result applied to LSI. The
LSI uses this information to control the relay and display
units.
9) Reset Circuit
This circuit generates a signal which resets the LSI (IC1)
to the initial state when power is supplied.
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DESCRIPTION OF LSI (IC-1)
The I/O signal of the LSIis detailed in the following table.
Pin No.
Signal
I/O
Description
1
AN5
IN
Temperature measurement input: OVEN THERMISTOR.
By inputting DC voltage corresponding to the temperature detected by the thermistor, this
input is converted into temperature by the A/D converter built into the LSI.
2
AN4
IN
Turminal not used.
3
AN3
OUT
Door lock motor driving signal.
To turn on and off shut-off relay(RY8).
“H”level during door lock motor driving
“L” level otherwise
ON
During
door lock
motor driving
H: +5V
OFF
L: GND
4
AN2
IN
Input signal which communicates the oven door locked information to LSI.
Door unlocked; “H” level signal(+5V).
Door locked; “L” level signal(0V).
5
AN1
IN
Input signal which communicates the oven door unlocked information to LSI.
Door locked; “H” level signal(+5V).
Door unlocked; “L” level signal(0V).
6
AN0
IN
Turminal not used.
7
CNVSS
IN
Power source voltage: 0V (GND).
VC voltage of power source circuit input. Connected GND.
8
RESET
IN
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.
9
P62
OUT
10
P61
11
VSS
IN
Power source voltage: 0V (GND).
VS voltage of power source circuit input. Connected GND.
12
XIN
IN
Internal clock oscillation frequency setting input.
The internal clock frequency is set by inserting the ceramic filter oscillation circuit with
respect to Xout terminal.
13
XOUT
OUT
14
VCC
IN
15
P60
OUT
Turminal not used.
16 -19
P37- P34
OUT
Turminal not used.
20
RXD2
IN
Input terminal to check the data of display.
Data signal from IC-3 is input to RXD2 to check the flow of the data.
21
TXD2
IN
Output terminal to send IC-2 the data.
The data of display is output to IC-2.
22
SCLK
OUT
Clock timing signaI output terminal.
Clock timing signal is sent to IC-2 and IC-3.
23
P30
OUT
Signal to reset LSI.
Signal is output to reset IC-2, IC-3 and IC-4.
24 - 27
COM3 - COM0
OUT
Turminal not used.
28
VL3
IN
29 - 34
P27- P22
OUT
Turminal not used.
35
P21
OUT
Turminal not used.
36
P20
OUT
Turminal not used.
Memory (EEPROM) clock out.
IN/OUT Memory (EEPROM) data input/output.
Internal clock oscillation frequency control output.
Output to control oscillation input of Xin.
Power source voltage: +5V.
VC voltage of power source circuit input.
Connected VC (+5V).
29
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Pin No.
Signal
I/O
37
P17
OUT
Description
Bottom heater relay driving signal.
To turn on and off relay(RYB).
“H” level: During bottom heater relay ON.
“L” level: During bottom heater relay OFF.
38
P16
OUT
Turminal not used.
40
P14
OUT
Door lock motor driving signal.
To turn on and off relay(RY8).
“H” level: During door lock motor ON.
“L” level: During door lock motor OFF.
41
42
43
44
45
46
47
P13
P12
P11
P10
P07
P06
P05
OUT
OUT
OUT
OUT
OUT
OUT
OUT
Oven lamp (Oven) driving signal.
To turn on and off relay(RY7).
“H” level: During oven lamp ON.
“L” level: During oven lamp OFF.
Fan motor (Oven) driving signal.
To turn on and off relay(RY6).
“H” level: During fan motor ON.
“L” level: During fan motor OFF.
Fan motor (Drawer) driving signal.
To turn on and off relay(RY5).
“H” level: During fan motor ON.
“L” level: During fan motor OFF.
Top heater driving signal.
To turn on and off relay(RY4).
“H” level: During top heater ON.
“L” level: During top heater OFF.
Oven common relay driving signal.
To turn on and off relay(RY3).
“H” level: During oven common relay ON.
“L” level: During oven common relay OFF.
Oven lamp and stirrer motor driving signal.
To turn on and off relay(RY1).
“H” level: During oven lamp and stirrer motor ON.
“L” level: During oven lamp and stirrer motor OFF.
Magnetron high-voltage circuit driving signal.
To turn on and off the cook relay(RY2). In 100%
power operation, the signals holds “H” level during
microwave cooking and “L” level while not cooking. In other cooking modes (90%, 80%, 70%,
60%, 50%, 40%, 30%, 20%, 10%, 0%) the signal
turns to “H” level and “L” level in repetition according to the power level.
ON
H: +5V
ON
H: +5V
ON
H: +5V
ON
H: +5V
ON
H: +5V
ON
H: +5V
ON
H: +5V
ON
H: +5V
OFF
Microwave cooking mode
VARI MODE
56
RXD1
IN
Signal coming from key unit.
30
Other cooking mode
100% power
32 sec.
0 sec.
60sec.
0ec.
90% power
30 sec.
2 sec.
54sec.
6sec.
80% power
26 sec.
6 sec.
48sec.
12sec.
70% power
24 sec.
8 sec.
42sec.
18sec.
60% power
22 sec.
10 sec.
36sec.
24sec.
50% power
18 sec.
14 sec.
30sec.
30sec.
40% power
16 sec.
16 sec.
24sec.
36sec.
30% power
12 sec.
20 sec.
18sec.
42sec.
20% power
8 sec.
24 sec.
12sec.
48sec.
10% power
6 sec.
26 sec.
4sec.
56sec.
0% power
0 sec.
32 sec.
0sec.
60sec.
Common relays driving signal. (Square Waveform : 60Hz)
To turn on and off the shut-off relays (RY1 and
RY3). The square waveform voltage is delivered
to the relays (RY1 and RY3) driving circuit.
Signal coming from key unit.
L: GND
ON TIME OFF TIME ON TIME OFF TIME
OUT
IN
L: GND
OFF
P57
TXD1
L: GND
OFF
53
55
L: GND
OFF
Used for initial balancing of the bridge circuit (absolute humidity sensor).
Signal coming from key unit.
L: GND
OFF
OUT
IN
L: GND
OFF
P04-P00
P56
L: GND
OFF
48-52
54
L: GND
OFF
16.7 msec.
H: +5V
L: GND
During cooking
KB-3300JS
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Pin No.
Signal
I/O
57
P53
IN
58
P52
OUT
Description
To input signal which communicates the oven door open/close information to LSI.
Door open "H" level signal (+5V). Door close "L" level signal (GND).
Signal to sound buzzer.
A: Key touch sound.
B: Completion sound.
C: When the oven stops so that the food can be
checked in Automatic cooking mode.
0.1 sec
A
2.0 sec
B
1.0 sec
1.0 sec
H: +5V
C
L: GND
59
P51
IN
Input signal which communicates the drawer door open/ close information to LSI.
Door opened; “H” level signal(+5V).
Door closed; “L” level signal(0V).
60
INT0
IN
Signal to synchronize LSI with commercial power source frequency.
This is the basic timing for all real time processing of LSI.
H : +5V
L : GND
16.7 msec.
61
AVSS
IN
A/D converter power source voltage.
The power source voltage to drive the A/D converter in the LSI.
62
VREF
IN
Reference voltage input terminal.
A reference voltage applied to the A/D converter in the LSI. Connected to +5V.
63
AN7
IN
AH sensor input.
This input is an analog input terminal from the AH sensor circuit, and connected to the A/
D converter built into the LSI.
64
AN6
IN
Used for initial balancing of the bridge circuit (absolute humidity sensor). This input is an
analog input terminal from the AH sensor circuit, and connected to the A/D converter built
into the LSI.
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HUMIDITY SENSOR CIRCUIT
(1) Structure of Humidity Sensor
The humidity sensor includes two thermistors as shown
in the illustration. One thermistor is housed in the closed
vessel filled with dry air while another in the open vessel.
Each sensor is provided with the protective cover made
of metal mesh to be protected from the external airflow.
potential at both F-3 terminal of the absolute humidity
sensor and AN6 terminal of the LSI. The voltage of AN7
terminal will indicate about +2.5V. This initial balancing is
set up about 16 seconds after the unit is put in the Sensor
Cooking mode. As the sensor cooking proceeds, the
food is heated to generate moisture by which the
resistance balance of the bridge circuit is deviated to
increase the voltage available at AN6 terminal of the LSI.
Then the LSI observes that voltage at AN7 terminal and
compares it with its initial value, and when the comparison
rate reaches the preset value (fixed for each menu to be
cooked), the LSI causes the unit to stop sensor cooking;
thereafter, the unit goes in the next operation automatically.
When the LSI starts to detect the initial voltage at AN7
terminal 16 seconds after the unit has been put in the
Sensor Cooking mode, if it is not possible to balance the
bridge circuit due to disconnection of the absolute humidity
sensor, ERROR will appear on the display and the
cooking is stopped.
ventilation opening for sensing
Thermistors
Sensing part
(Open vessel)
Sensing part
(Closed vessel)
1) Humidity sensor circuit
(2) Operational Principle of Humidity Sensor
The figure below shows the basic structure of an absolute
humidity sensor. A bridge circuit is formed by two
thermistors and two resistors (R1 and R2).
The output of the bridge circuit is to be amplified by the
operational amplifier.
Each thermistor is supplied with a current to keep it
ο
ο
heated at about 150 C (302 F), the resultant heat is
dissipated in the air and if the two thermistors are placed
in different humidity conditions they show different degrees
of heat conductivity leading to a potential difference
between them causing an output voltage from the bridge
circuit, the intensity of which is increased as the absolute
humidity of the air increases. Since the output is varied
every minute, it is amplified by the operational amplifier.
VC : +5V
R40
430
VA : +15V
23
R4
R43 1.8K
C
R2
Operational
amplifier
Output
voltage
+
S : Thermistor
open vessel
C : Thermistor
closed vessel
Absolute humidity (g/m 2 )
(3) Detector Circuit of Humidity Sensor Circuit
This detector circuit is used to detect the output voltage
of the absolute humidity circuit to allow the LSI to control
sensor cooking of the unit. When the unit is set in the
sensor cooking mode, 16 seconds clearing cycle occurs
than the detector circuit starts to function and the LSI
observes the initial voltage available at its AN6 terminal.
With this voltage given, the switches SW1 to SW5 in the
LSI are turned on in such a way as to change the
resistance values in parallel with R45 ~ R49. Changing
the resistance values results in that there is the same
32
AN7
R52 47K
LSI
(IC1)
R44 360K
95
R49 37.4K
Output voltage
R1
R50 10K
85
R48 75K
S
86
1
R45 620K
R46 300K
Absolute humidity vs,
output voltage characteristic
8
+
IC3
4
2
R51 47K
R47 150K
R3
86
3
C42 0.1 F
K
.57
C
S
K
F1
D41
.32
13
F3
R4
F2
D40
C. Thermistor in
closed vessel
S. Thermistor in
open vessel
96
97
98
99
AN6
SW1
P00
SW2
P01
SW3
P02
SW4
P03
SW5
P04
KB-3300JS
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IC-7
IC-8
OVEN TEMPERATURE/SELF CLEANING CONTROL CIRCUIT
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OVEN DOOR LOCK MOTOR CONTROL CIRCUIT
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OVEN DOOR LOCK MOTOR DETECTION CIRCUIT
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TOUCH CONTROL PANEL SERVICING
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).
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.
approx. 1M ohm
2. 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) 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.
3. 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: DC10MHz type or more advanced model.
3) Others: Hand tools
4. 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.
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PRECAUTIONS FOR USING LEAD-FREE SOLDER
1. Employing lead-free solder
The "Main PWB" of this model employs lead-free solder. This is indicated by the "LF" symbol printed on the PWB and
in the service manual. The suffix letter indicates the alloy type of the solder.
Example:
Indicates lead-free solder of tin, silver and copper.
2. Using lead-free wire solder
When repairing a PWB with the "LF" symbol, only lead-free solder should be used. (Using normal tin/lead alloy solder
may result in cold soldered joints and damage to printed patterns.)
As the melting point of lead-free solder is approximately 40oC higher than tin/lead alloy solder, it is recommend that a
dedicated bit is used, and that the iron temperature is adjusted accordingly.
3. Soldering
As the melting point of lead-free solder (Sn-Ag-Cu) is higher and has poorer wettability, (flow), to prevent damage to the
land of the PWB, extreme care should be taken not to leave the bit in contact with the PWB for an extended period of
time. Remove the bit as soon as a good flow is achieved. The high content of tin in lead free solder will cause premature
corrosion of the bit. To reduce wear on the bit, reduce the temperature or turn off the iron when it is not required.
Leaving different types of solder on the bit will cause contamination of the different alloys, which will alter their
characteristics, making good soldering more difficult. It will be necessary to clean and replace bits more often when using
lead-free solder. To reduce bit wear, care should be taken to clean the bit thoroughly after each use.
37
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OVEN / MICROWAVE DRAWER DISASSEMBLY
WARNING: Follow all safety precautions beginning on Page 2 before proceeding!
Fig. 1
1. Before removing Control Panel, take measures to protect the
Cook Top surface and keep Microwave Drawer open
to prevent scratches.
Control Knobs
Retainers
2. Remove all Control Knobs (Fig 1).
Glass Key Deco
GND Deco Screw
3. Unscrew all Retainers (Fig 1).
4. Unscrew Glass Key Deco screw (1) (Fig 1).
Lens
5. Carefully lift Glass Key Deco and unhook
Indicator Lamps
Indicator Lamp from Lens (Fig 1).
6. Remove all screws from Control Panel Mold (Fig 2).
7. Slide Control Panel Mold to left (to unlock) and lift (Fig 2).
Fig. 2
Control Panel Mold
8. Remove Gasket from Key Fixing Angle (Fig 3).
Gasket
9. Lift Key Fixing Mold and carefully unhook all Molex’s,
ground wire and C/P wiring (Fig 3).
Fig. 3
Key Fixing Angle
NOTE: When reassembling, it is very important
that all Cook Top wires are tucked under the
Microwave cavity lip and secured with the RED
WIRE STRAP. The 240v harness can create
noise that can interfere with C/P function
(example: intermittent or no keyboard operation).
38
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Fig. 4
10. Remove screws from Control Panel Frame (Fig 4).
Control Panel Frame
11. Slide Cook Top forward to unlock from
shoulder screws, then remove or reposition (Fig. 5).
Fig. 5
12. Remove all screws on back panel and covers then
remove side panels (Fig. 6).
Fig. 6
Back Panel
13. Unhook wires from Select Switch assembly by carefully
lifting back cover and leaning to gain access (Fig. 6).
Select Switch
Side Panels
39
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14. Remove screws from Microwave top Air Duct and take off (Fig. 7).
15. Remove all screws from Microwave Back Plate (Fig. 7).
16. Lift Back Plate and remove carefully not to damage any wires (Fig. 7).
Air Duct
Back Plate
NOTE: The Microwave Back Plate cannot be completely removed due to wiring. If you need to remove, you will have
to unhook all wiring routed through it.
At this point, you will have access to all parts of the Microwave and Oven.
MICROWAVE DRAWER ASSEMBLY REMOVAL TO ACCESS OVEN COMPONENTS
OVEN COMPONENT REMOVAL
1. After dissaembly as stated on Pages 38 - 39, remove Microwave Drawer assembly by removing (2) screws (right & left)
from front of Microwave Baseplate (Fig. R-1).
2. Unhook wires from Range Oven to Microwave Drawer, remove Drawer assembly from Oven.
You now have access to Range Oven components.
screw
Fig. R-1
40
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STOP SWITCH, SECONDARY INTERLOCK SWITCH AND MONITOR SWITCH REMOVAL
1. Disconnect the power supply cord.
2. Open the drawer and keep it open.
3. To discharge the high voltage capacitor, wait for 60
seconds.
4. Remove the Cook Top.
5. Remove the Cook Top Stay (right or left).
6. Remove the screw holding the latch hook to the oven
flange.
7. Remove the latch hook from the oven flange.
8. Disconnect the wire leads of each switch.
9. Remove each switch from the latch hook by pushing the
one (1) stopper tab holding each switch.
10.Now, each switch is free.
Re-install
1. Re-install each switch in its place. The secondary interlock
switch is in the lower position and the monitor switch is in
the top position, located on the left side of the unit. The
door sensing switch by itself on the right side of the unit.
2. Re-connect wire leads to each switch. Refer to pictorial
diagram.
3. Secure the latch hooks with mounting screws to oven
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".
Latch Hook Right
Latch Hook Left
STOP SWITCH, SECONDARY INTERLOCK SWITCH AND MONITOR SWITCH ADJUSTMENT
1. Disconnect the power supply cord.
2. Open the drawer and keep it open.
3. To discharge the high voltage capacitor, wait for 60
seconds.
4. Remove the Cook Top.
5. Remove the Cook Top Stay (right or left). 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.
6. Loosen the screw holding latch hook to the oven cavity
flange.
7. With drawer 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 secondary
interlock switch is activated with the drawer closed. The
horizontal position of the latch hook should be adjusted
so that the monitor switch and drawer sensing switch are
activated with the drawer closed.
8. Secure the screws with washers firmly.
9. Check all of the switches operation. If any switch has not
activated fully, you will need to adjust the slide rail
attached to the Microwave cavity.
10.This is done by following the steps to remove the
"DRAWER/SLIDE RAIL REMOVAL" on page 42. After
you have removed the slide rails, loosen the "2" screws
holding the slide rail to the Microwave cavity and tilt the
front end up and the rear end down, then tighten the
screws (Fig. S-1).
11.Check and assure that the cap nuts on the Drawer
Support Angles are centered when passing through the
cavity face plate.
After adjustment, check the following.
1. In and out play of door remains less than 0.5mm when in
the latched position. First check upper position of latch
hook, pushing and pulling upper portion of drawer 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.
2. The secondary interlock switch switch interrupt the circuit
before the door can be opened.
3. Monitor switch contacts close when door is opened.
4. Door sensing switch contacts open when door is opened.
5. Reassemble the unit and check for microwave leakage
around door with an approved microwave survey meter.
(Refer to Microwave Measurement Procedure.
Fig. S-1
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DRAWER/SLIDE RAIL REMOVAL
DRAWER ASSEMBLY AND CHOKE REMOVAL
NOTE:
1. Disconnect the power supply cord.
2. Open the drawer and keep it open.
3. To discharge the high voltage capacitor, wait for 60
seconds.
4. Remove the both right and left Cook Top Stays.
5. Remove (2) Drawer Support Covers from Choke Cover
as shown in (Fig. D-1).
6. Insert a putty knife (thickness of about 0.5mm) into the
gap between the choke cover and the door frame.
7. Carefully slide choke cover away from drawer as far as
possible.
8. Remove (6) screws from all (3) drawer Support Angles
as shown in (Fig. D-2).
9. Unhook Drawer Support Angles from drawer, then
remove.
10.Now, the door assembly is free and the Choke Cover can
now be removed.
Fig. D-1
To remove only the
Microwave Drawer, follow steps
1, 2, 5, 8, 9 & 10
as instructed under
"DRAWER ASSEMBLY AND
CHOKE REMOVAL".
Fig. D-2
DRAWER SUPPORT ANGLE REMOVAL
1. Remove Drawer Assembly and Choke Cover as stated
in "DRAWER ASSEMBLY AND CHOKE REMOVAL".
2. Remove (2) screws from right or left Latch Angle
Assembly, then remove Angle assembly (Fig. D-4).
3. Separate Slide Rails by moving inside lever of Slide
Rails. The Slide Rail will now separate by pulling straight
forward and out (Fig. D-3).
4. At this point, you can replace either Latch Angle Assy or
Latch Angles.
To reassemble, just reverse the above order.
After reassembly, do the following.
(A) Make sure that drawer sensing switch, secondary
interlock switch and monitor 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.
Fig. D-3
After any servicing, make sure of the following :
1. Drawer 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. Drawer is positioned with its face pressed toward cavity
face plate.
4. Reassemble the unit and check for microwave leakage
around drawer with an approved microwave survey
meter. (Refer to Microwave Measurement Procedure.)
Fig. D-4
Note: The drawer 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 drawer is not abnormal
and do not of themselves indicate a leakage of
microwave energy from oven cavity.
42
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OVEN DOOR REMOVAL
OVEN DOOR ASSEMBLY REMOVAL
1. Disconnect the power supply cord.
2. Open the door to the fully opened position (Fig. O-1).
3. Pull the lock located on both hinge supports up and engage in the hook
of the hinge levers. You may have to apply a little downward pressure
on the door to pull the locks fully over the hooks (Fig. O-2).
4. Grab the door by the sides, pull the bottom of the door up and toward you
to disengage the hinge supports. Keep pulling the bottom of the door
toward you while rotating the top of the door toward the range to
completely disengage the hinge levers (Fig. O-3).
5. Proceed in reverse to reinstall the door.
6. Make sure the hinge supports are fully engaged before unlocking the
hinge levers.
Fig. O-1
Fig. O-2
OVEN DOOR RECEPTACLE HINGE AND HINGECOVER
REPLACEMENT
1.
2.
3.
4.
5
Disconnect the power supply cord.
Refer to the disassembly instructions found on Pages 38 - 40.
Remove (2) screws from Hinge Cover (Fig. O-4)
Remove Hinge Receptacle.
Proceed in reverse to reinstall the Hinge Receptacle and Hinge Cover.
Fig. O-3
Fig. O-4
Recepticle Hinge
Recepticle Hinge
Hinge Cover
43
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OVEN BAKE ELEMENT REMOVAL
1.
2.
3.
4.
5.
6.
Disconnect the power supply cord.
Refer to the disassembly instructions found on Pages 38 - 40.
Disconnect the wires by removing (2) nuts from element (Fig. O-5)
Remove the (2) screws holding the element from inside the oven (Fig. O-6).
Pull the Element into the oven.
Proceed in reverse to reinstall the Bake Element.
Fig. O-5
Fig. O-6
OVEN BROIL ELEMENT REMOVAL
1.
2.
3.
4.
5.
6.
Disconnect the power supply cord.
Refer to the disassembly instructions found on Pages 38 - 40.
Disconnect the wires by removing (2) nuts from element (Fig. O-7)
Remove the (2) screws holding the element from inside the oven (Fig. O-8).
Pull the Element into the oven.
Proceed in reverse to reinstall the Broil Element.
Fig. O-8
Fig. O-7
THERMISTOR REMOVAL
1.
2.
3.
4.
5.
6.
7.
Disconnect the power supply cord.
Refer to the disassembly instructions found on Pages 38 - 40.
Unhook rear Molex wiring from Thermistor (Fig. O-9)
Remove tape from Thermistor rear hole.
Remove the (2) screws holding the Thermistor from inside the oven (Fig. O-10).
Pull the Thermistor into the oven.
Proceed in reverse to reinstall the Thermistor.
Fig. O-10
Fig. O-9
44
KB-3300JS
KB-3300JK
KB-3300JW
BLOWER MOTOR REMOVAL
1.
2.
3.
4.
5.
6.
7.
Disconnect the power supply cord.
Refer to the disassembly instructions found on Pages 38 - 40.
Unhook all wiring from Blower Motor (Fig. O-11)
Remove tape from Thermistor rear hole.
Remove the (2) screws holding the Blower Motor to the Rear Plate.
The Blower Motor is now free.
Proceed in reverse to reinstall the Blower Motor.
Fig. O-11
LOCK MOTOR REMOVAL
1.
2.
3.
4.
5.
6.
7.
Disconnect the power supply cord.
Refer to the disassembly instructions found on Pages 38 - 40.
Unhook all wiring from Lock Motor (Fig. O-12).
Remove the (2) screws holding the Lock Motor to the Rear Plate.
Pull Lock Motor from Lock Motor Shaft.
The Lock Motor is now free.
Proceed in reverse to reinstall the Thermistor.
Fig. O-12
45
KB-3300JS
KB-3300JK
KB-3300JW
COOK TOP RADIANT HEATERS/HOT SURFACE INDICATOR REMOVAL
1. Disconnect the power supply cord.
2. Refer to the disassembly instructions found on Pages 38 - 40.
3. After Cook Top Assembly is free, turn upside down (glass side down) on a protective surface to prevent
scratching (Fig. O-13).
4. Remove the (10) screws from Bottom Plate and place to the side.
5. Remove Heater Protect Cover (Fig. O-14).
6. Remove necessary spring strap from Radiant Element.
7. Unhook Radiant Element or Hot Surface Indicator wiring.
8. The Radiant Elements are now free.
9. Proceed in reverse to reinstall the Radiant Elements and/or Hot Surface Indicator.
Fig. O-13
Fig. O-14
46
47
WHT
BLK
WHT
H1(RR)
H1(LF)
H1(LR)
WHT w/BRN STRIPE or BRN
H2(LF)
WHT
WHT
4a(RF)
WHT w/YLW STRIPE or YLW
RED
4 (RF)
H2(RR)
WHT
L2
WHT w/BRN STRIPE or BRN
BLK
L1
2 (RF)
H2(LR)
VLR-12V
1
2
3
4
5
6
7
8
9
10
11
12
(TO COOKTOP HARNESS)
L1
(RR)
ORG
L2
(RR)
RED
L1
(LR)
H1
(RR)
BLK
WHT
w/YLW
STRIPE
P
(RR)
RED
or
YLW
L2
(LR)
BLK
WHT
H2
(RR)
YLW
P
BLK
P2
(RF)
RED
P1
(RF)
YLW
L2
RED
PILOT LIGHT LEFT
YLW
GRN
YLW
S2
(RF)
S1
(RF)
INFINITE SWITCHES (LEFT SIDE)
P
(LR)
H2
(LR)
YLW
RED
RED
H1
BRN
WHT
w/BRN
STRIPE
or
L2
(LR)
WHT
YLW
P
PILOT LIGHT RIGHT
INFINITE SWITCHES (RIGHT SIDE)
(LF)
P
YLW
GRN
WHT
RED
P1
(RF)
L1
(LF)
ORG
BLK
RED
RED
1
2
3
4
5
6
JST VLR-06V
4
(RF)
L1
L1
L2
L2
L2
BLK
BLK
RED
RED
RED
L2
(LF)
BLK
L1
BLK
or
WHT
w/BRN
STRIPE
RED
POWER CORD
WHT
4a
(RF)
BRN
H1
(LF)
WHT
2
(RF)
H2
(LF)
KB-3300JS
KB-3300JK
KB-3300JW
CONTROL PANEL WIRING DIAGRAM
VLP-12V
L1
L2
4 (RF)
4a(RF)
H1(RR)
H1(LF)
H1(LR)
H2(RF)
H2(RR)
H2(LF)
H2(LR)
BLK
W HT
RED
WHT
WH T
BLK
WH T
BRN
YLW
W HT
BRN
1
2
3
4
5
6
7
8
9
10
11
12
(TO CONTROL HARNESS)
WHT
L2
BLU
YLW
LF
BLK
SURFACE LAMPS
RF
BRN
LR
RR
48
2b
BLU
BRN
2a
YLW
YLW
BLK
BLU
WHT
P1
P1B
RED
YLW
2a
2b
1 ZONE
LEFT FRONT
(LF)
SMALL
1b
BLU
YLW
1b
2 ZONE
RIGHT FRONT
(RF)
LARGE
BLK
YLW
WHT
P1A
WHT
YLW
BLK
BLU
2b
BLU
BLK
2b
YLW
90
2a
BRN
2a
1 ZONE
LEFT REAR
(LR)
LARGE
1b
YLW
BLK
P1
1 ZONE
RIGHT REAR
(RR)
SMALL
WHT
YLW
BRN
YLW
P1
1b
KB-3300JS
KB-3300JK
KB-3300JW
COOK TOP WIRING DIAGRAM
2
WHT
STOP SW
(COM.)
WHT
EX
GRN
1
GR N
(N.O.)
EX
EX
ORG
OVEN THERMAL
CUT-OUT
RED
ORG
WHT
BLU
GRY
BR N
(N.O.)
2ND. SW
EX
BLK
BR N
(COM.)
(COM.)
(N.C.)
EX
BLK
RED
MONITOR SW
ORG
EX
BRN
EX
1
GRY
ORG
TO CPU
BLU
BLU
2
3
(JST VHR-7N)
CN-C
4
EX
RED
5
6
EX
ORG
(JST XMR-02V)
BLK
1
GRN
EX
7
EX
BR N
OVEN LAMP
YLW
(SOURSE)
BLK
BLK
RED
3
6
5
4
(JST VHR-7N)
CN-E
2
7
1
2
3
EX
EX
RY-3
BRN
(N.O.)
BLK
(COM.)
EX
EX
ORG
RY-4
EX
RED
EX
(N.O.)
ORG
BLK
(N.O.)
(COM.)
ORG
RY-1
(COM.)
CN-B
(JST VHR-3N)
RED
NOISE FILTER
BLK
BRN
(LOAD)
GRN
RED
BL U
ORG
RY-2
EX
(COM.)
BL K
BL K
EX
U L TAP E
(N.O.)
RED
RED
1
2
TO OVEN HARNESS
(JST VLP-06V)
(L1) (N) (L2)
3
1
BLK
FAN
MOTOR
4
2
5
3
(JST VLP-8V)
TO OVEN HARNESS
BRN
BLK
WHT
YLW
RED
WHT
6
4
BLK
7
5
8
6
BRN
ORG
WHT
RED
BLK
RED
49
1
BRN
2
(JST VLP-02V)
BL K
RED
WHT
(N.O.)
BOTTOM HEATER RELAY
RED
RED
STIRRER
MOTOR
RED
BRN
(COM)
(N.O.)
L2 RELAY
ORG
ORG
(N.C.)
(COM)
RED
UL TAPE
EX
(BACK)
RED
ORG
EX
(FRONT)
BL K
MG THERMAL
CUT-OUT
ORG
EX
HVT
(CENTER)
WHT
MICROWAVE DRAWER WIRING DIAGRAM
KB-3300JS
KB-3300JK
KB-3300JW
(JST XAP-15V-1)
TO PWB
WHT
GRY
GRY
GRY
GRY
GRY
GRY
GRY
GRY
GRY
GRY
GRY
GRY
GRY
GRY
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
(JST XMP-02V)
UL TAPE
(JST XMP-07V)
TO OVEN HARNESS
6
7
6 LOCK MOTOR SW (N.O.)
7 LOCK MOTOR SW (COM)
STOP SW (N.O.)
DOOR SW (COM)
DOOR SW (N.O.)
TO CPU
(JST XAP-12V-1)
THERMISTOR
THERMISTOR
1 2 3 4 5 6 7
(JST XMP-07V)
TO OVEN HARNESS
ORG
ORG
TO DRAWER HARNESS
RE D
LOCK MOTOR SW (N.O.)
LOCK MOTOR SW (COM)
BR N
LOCK MOTOR SW (N.C.)
BLK
RED
8
9
10
11
12
YLW
STOP SW (COM)
(JST XMP-02V)
WHT
GRN
1 2
TO CPU
(JST XAP-12V-1)
(JST XAP-15V-1)
TO CPU
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
1 2 3 4 5 6 7 8 9 10 11 12
TO DRAWER HARNESS
WHT
1
2
3
4
5
GRN
BL K
RED
THERMISTOR
THERMISTOR
DOOR SW (COM)
DOOR SW (N.O.)
LOCK MOTOR SW (N.C.)
RE D
1
2
3
4
5
BRN
1 STOP SW (COM)
2 STOP SW (N.O.)
YLW
ORG
ORG
50
WHT
GRY
GRY
GRY
GRY
GRY
GRY
GRY
GRY
GRY
GRY
GRY
GRY
GRY
GRY
KB-3300JS
KB-3300JK
KB-3300JW
MICROWAVE DRAWER WIRING DIAGRAM
TERMINAL
RED
(RIGHT)
(L2)
BLK
NO.07
NO.08
SHRINK TUBE
(VERSAFIT V2)
1
BLK
BLK
BLK
BLK
1 2 3 4 5 6
RED
RED
RED
RED
(JST VLP-6V)
INFINITE SWITCH HARNESS
BLK
BL K
BL K
RED
RED
RED
51
(LEFT)
(L1)
UL TAPE
RANGE POWER SUPPLY WIRING DIAGRAM
KB-3300JS
KB-3300JK
KB-3300JW
B LK
(COM.)
(N.O.)
RED
OVEN
LAMP
EX
ORG
(JST VLR-02V)
1
EX
WH T
WH T
2
RE D
RE D
LOCK
MOTOR
B RN
RED
WHT
RED
TOP HEATER
RED
RED
BOTTOM
HEATER
WH T
1
EX
(N.O.)
RED
2
LOCK MOTOR
SWITCH
(N.C.)
B RN
UL TAPE
(MOLEX 5559-02P)
THERMISTOR
ORG
O RG
TO DRAWER
HARNESS
(COM)
YLW
RED
RED
(CENTER) (RIGHT)
(L2)
( N)
WH T
WH T
EX
EX
3
2
1
UL TAPE
YLW
VOLTAGE
SWITCH
EX
WHT
WHT
CROSS FLOW
FAN MOTOR
RED
TERMINAL
(LEFT)
(L1)
B LK
BLK
EX
BLK
OVEN THERMAL
CUT-OUT
(N.C.)
BLK
(N.O.)
W HT
(COM) BRN
(L1) (N) (L2)
(JST VLR-06V)
TO DRAWER HARNESS
UL TAPE
1
2
3
4
5
6
BLK
WHT
RED
WHT
BLK
BRN
DOOR SW
1
UL TAPE
2
3
VOLTAGE SW (N.O.)
5
6
L2
2
3
4
BOTTOM HEATER
8
5
6
7
8
(JST VLR-8V)
(JST VLR-8V)
TO DRAWER HARNESS
1
2
(JST XMR-07V)
3
TO CPU
LOCK MOTOR SW (COM)
7
OVEN LAMP
7
TO DRAWER HARNESS
LOCK MOTOR SW (N.C.)
LOCK MOTOR SW (N.O.)
6
THERMAL CUTOUT
4
6
DOOR SW
4
CROSS FLOW FAN MOTOR
TOP HEATER
3
5
3
L1
D OOR S W
2
2
5
THERMISTOR
THERMISTOR
1
LOCK MOTOR
OVEN THERMAL CUTOUT
1
(JST VLR-06V)
TO DRAWER HARNESS
VOLTAGE SW (COM)
VOLTAGE SW (N.C.)
4
L1
N
1
B RN
B LK
YLW
RED
BLK
RED
ORG
WH T
52
4
5
6
7
(JST XMR-07V)
TO CPU
ORG
ORG
BLK
RED
B RN
RED
YLW
KB-3300JS
KB-3300JK
KB-3300JW
RANGE WIRING DIAGRAM
KB-3300JS
KB-3300JK
KB-3300JW
2
1
4
3
6
5
A
A
Transformer
CN-A
RTRNPA006WRZZ
D1 -- D4
A-1
1N4002L x4
CN-H
C2
+
2200uF/35V
C1
0.1uF/50V
H-1
A-2
B
B
H-2
A-6
VRS1
H-3
A-4
10G471K
60Hz
B-1
R1
CN-B
C
1.5K 1/4W
120V
2.5A
FUSE
B-3
C
ZD1
RY2
HZ20-1
Q1
KTC1027
D5
POWER
TRANSFORMER
H-4
DU18D1-1P(M)-R-S
RY1
H-5
D6
OL,SM
(DRAWER COM.)
R2
H-6
DU18D1-1P(M)-R
150
1W
RY3
D7
D
(OVEN COM.)
D
R3
H-7
DU18D1-1P(M)-R
D8
RY4
TOP H.
150
1W
R4
H-8
DU18D1-1P(M)-R
D9
RY5
150
1W
E
C-1
FM
(DRAWER)
E
H-9
D10
RY6
C-3
H-10
RY7
D11
FM
( OVEN)
OL
(OVEN)
C-5
H-11
RY8
H-15
D12
DOOR
LOCK
MOTOR
(OVEN)
F
<NOTE>
C-7
F
H-12
: IF NOT SPECIFIED, 1SS270A
CN-C
RY5 -- 8
H-14
H-13
FTR-F3AA024E
D16
G
G
D15
BOTTOM
HEATER
RELAY.
E-1
E-2
E-3
E-4
E-5
E-6
E-7
CN-E
HEATER
COMMON.
H
H
Figure S-2. Power Unit Circuit
1
2
4
3
53
5
6
K-8
K-9
K10
K11
K12
TOP.H(RY4)
D.FM(RY5)
O.FM(RY6)
O.OL(RY7)
O.LM(RY8)
K14
K15
HEATER
COMMON
DOOR (RY8)
LOCK
MOTOR
K13
K-7
O.COM(RY3)
BOTTOM
HEATER
RELAY
K-6
K-5
M-3
M-2
M-1
K-4
M-6
M-7
M-5
M-4
F-1
F-2
F-3
D.COM(RY1)
COM
DRAWER
DOOR
SW.
(CLOSE)
(RY2)
MICRO
OVEN
DOOR
SW.
AH SENSOR
K-3
CN-M
CN-F
D19
C40
9
10
11
12
13
14
15
16
9
10
11
12
13
14
15
16
ZD2
R40
C3
IC-7
COM
O-7
O-6
O-5
O-4
O-3
O-2
O-1
IC-8
+
D20
R43
7
R58
10K
10K
R56
GND
I-7
I-6
I-5
I-4
I-3
I-2
I-1
3
2
1
8
7
6
5
4
GND 8
I-7
7
I-6
6
I-5
5
4
I-4
I-3
3
2
I-2
1
I-1
4
8
+
AN3
P15
P16
P17
P20
P21
P06
P07
P10
P11
P12
P13
P14
1
R8
+
360KF
R44
10uF/35V
C20
P57
P51
P05
P53
I
47K
R51
10K
R50
C
O
+
47K
R52
C60
0.01u/50V
O
C5
Q22
KRC101S
10uF/35V
KID65004AF
KID65004AF
+
3
IC-5
2
KIA358
1.8KF
C21
Q23
KRA102S
COM
O-7
O-6
O-5
O-4
O-3
O-2
O-1
10uF/35V
KRC101S
Q20
-
+
Q21
KRA224S
6
5
3.32KD
R41
HZU16B1
430
1W
C41
INT
3.57KD
2K
C42
R42
C4
R57
R55
K-2
4.7K
GND
C52
C51
4.7K
C43
P00
300K
P01
R46
<NOTE>
OVEN
THERMISTOR
4.7K
P03
P02
P01
P00
P57
P56
TXD1
RXD1
P53
P52
P51
INT0
AVSS
VREF
AN7
AN6
5
LD4
4.7K
R12
LD5
Q6
KTC3875
LD6
HZU3.6B2
ZD4
60
55
50
IC-1
4.7K
R67
4.7K
R66
C63
C62
DOOR
LOCK
MOTOR
SWITCH
47K
R35
C13
47K
R36
R14
P24
P25
P26
P27
VL3
COM0
COM1
25 COM2
COM3
P30
SCLK2
TXD2
20 RXD2
P34
P35
P36
30
4.7K
CF4
16MHz
C73
Q7
KTC1027
VS
(0V)
4.7K
R15
VC(+5V)
4.7K
R20
R19 4.7K
R71
10K
100
10K
R22
SEG3
SEG2 50
SEG1
SEG0
P57
SCLK1
TXD1 55
RXD1
P53
P52
P51
60
INT0
AVSS
VREF
AN7
AN6
CN-G
R70
1
2
3
4
5
6
7
8
9
10
11
C72
MOSI
MISO
SCK
/RST
VDD
VSS
XT2
XT1
RX
TX
WS
IC-4
C74
LCD1
RLCDSA136DRZZ
IC-2
R24
4.7K
C70
33
32
31
30
29
28
27
26
25
24
23
Y3B
Y2B
Y1B
Y0B
VDD
VSS
VDD
X7
X6
X5
X4
C71
1K
1K
R78
1K
1K
R76
R79
R77
1K
R87
1K
R86
1K
R85
1K
R84
1K
R83
1K
R82
1K
R81
1K
R80
<CONTROL UNIT>
<KEY BOARD UNIT>
WH-A
4.7K
R23
C14
SEG20
SEG21
30 SEG22
SEG23
VL3
COM0
COM1
25 COM2
COM3
P30
P31
P32
20 P33
P34
P35
P36
LCD2
RLCDSA137DRZZ
10K
R30
SEG3
SEG2 50
SEG1
SEG0
P57
SCLK1
TXD1 55
RXD1
P53
P52
P51
60
INT0
AVSS
VREF
AN7
AN6
IC-3
4.7K
R31
CN-Z(IC-3)
CN-Y(IC-2)
CN-X(IC-1)
4.7K
R32
1
2
3
4
5
6
7
8
9
VCC
BUSY
SCLK
TXD
RXD
RESET
VPP
CE
VSS
CF3
VCC
P30 (23Pin)
P31 (22Pin)
P32 (21Pin)
P33 (20Pin)
RESET (8Pin)
CNVSS (7Pn)i
AN1 (5Pin)
VSS
4MHz
C15
SEG20
SEG21
30 SEG22
SEG23
VL3
COM0
COM1
25 COM2
COM3
P30
P31
P32
20 P33
P34
P35
P36
5
Figure S-3. Control Unit Circuit
: KDS160(CHIP)
: 0.1u/50V(CHIP)
LD3
4
: 1/10W J%(CHIP)
IF NOT SPECIFIED
KRC101S
Q24
1
RESET R34
Q5
KRA117S
LD2
R13
1W
390
10uF/35V
C7
R45
620K
C6
150KF
P02
R47
D40
37.4KF
P04
D41
C45
SP
75KF
P03
R48
R68
R69
R49
3.3K
1.5K
C8
C44
C
0.01u/50V
I
4.7K
+
M-8
Q2
KTC1027
R7
AN5
M12
4.7K
LD1
G-3
KIA78L05BP
AN2
10K
10uF/35V
R60
M11
R61
1.5KF
4.7K
Q4
G-1
Q3
KIA78L05BP
R64
LOCK
C10
R17
4.7K
R65
45
D22
D21
4.7K
R6
M-9
40
10K
R11
AN1
10K
UNLOCK
C11
R37 P62
R16
R5
4.7K
30
R21
4.7K
M10
R18
C30
4MHz
CF1
G-5
5
200 1W x2
G-4
35
4.7K
R38
P61
IC-6
VCC
TEST
SCL
SDA
8
7
6
5
1
2
3
4
R25
P04
P05
P06
P07
P10
P11
P12
P13
P14
P15
P16
P17
P20
P21
P22
P23
AT24C16N
4.7K
C12
P56
G-2
R92
RXD1
4.7K
R90
TXD1
R93
4.7K
AN5
AN4
AN3
AN2
5
AN1
AN0
CNVSS
RESET
P62
10
P61
VSS
XIN
XOUT
VCC
15
P60
P37
A0
A1
A2
VSS
4.7K
44 /SS
43 SYNC
42 VREF
41 DRDY
40 LED
39 VSS
38 VDD
37 Y5B
36 Y5A
35 Y4B
34 Y4A
12
13
14
15
16
17
18
19
20
21
22
R91
10
R72
CN-K
R73
C76
G-6
SEG4
SEG5
SEG6
45 SEG7
SEG8
SEG9
SEG10
SEG11
40 SEG12
SEG13
SEG14
SEG15
SEG16
35 SEG17
SEG18
SEG19
15
AN5
AN4
AN3
AN2
AN1
AN0
CNVSS
RESET
P62
P61
VSS
XIN
XOUT
VCC
P60
P37
SMP
Y3A
Y2A
Y1A
Y0A
VDD
VSS
X0
X1
X2
X3
CF2
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
S11
S12
S13
S14
S15
S16
S17
S18
S19
S20
S21
S22
S23
R26
SEG0
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
SEG13
SEG14
SEG15
SEG16
SEG17
SEG18
SEG19
SEG20
SEG21
SEG22
4MHz
K-1
4.7K
C1
C2
C3
C4
R75
5
COM0
COM1
COM2
COM3
R74
4
C77
54
220K x 4
3
C78
3
4700PF x 4
2
C75
R27
4.7K
10
C5
C4
S24
COM1
COM0
SEG23
R29
4.7K
R28
2
R33
1
4.7K
S23
S22
S21
S20
S19
S18
S17
S16
S15
S14
S13
S12
S11
S10
S9
S8
S7
S6
S5
S4
S3
S2
S1
S0
H
SEG4
SEG5
SEG6
45 SEG7
SEG8
SEG9
SEG10
SEG11
40 SEG12
SEG13
SEG14
SEG15
SEG16
35 SEG17
SEG18
SEG19
F
15
E
4.7K
1
AN5
AN4
AN3
AN2
AN1
AN0
CNVSS
RESET
P62
P61
VSS
XIN
XOUT
VCC
P60
P37
D
SEG0
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
SEG13
SEG14
SEG15
SEG16
SEG17
SEG18
SEG19
SEG20
SEG21
SEG22
SEG23
G
C3
C2
C1
C0
C
COM0
COM1
COM2
B
COM3
A
VR
KB-3300JS
KB-3300JK
KB-3300JW
6
A
B
C
6
D
E
F
G
H
KB-3300JS
KB-3300JK
KB-3300JW
2
1
4
3
5
6
B
B
1
6
CNJ
CNE
ZZRD448AFBWPQ
7
1
D16
D17
D15
A
S047081
A
1
C
C2
D14
RY10
2
C
6
D18
5
1
D2
D1
D3
C1
D4
D
CNH
D7
RY3
R3
DIP
FUSE 2.5A
D
VRS1
15
RY9
ZD1
D13
R1
FA844
CND
RY11
CNA
1
CNB
3
E
1
D8
D10
1
R4
R2
C
CNC
E
E
D11
Q1 D12
7
B
RY7 RY8
RY4
RY1
D9
D5
RY6 RY5
F
3
F
RY2
D6
G
G
H
H
Figure S-4. Printed Wiring Board of Power Unit
1
2
4
3
55
5
6
R8
2
B C E
C3
CNK
15
1
CNL
9
LD10
1
CNF
3
4
CF1
1
8
9 CNX
2
1
CNM
14
5
9
1
CNN
CNY 8
2
LCD1
CF2
6
5
3
4
D
3
4
56
R40
Figure S-5. Printed Wiring Board of Control Unit
C90
F
R100
6
CF3
SP
3
S047071
B
Q2
C21
1
2 CNZ 8
E
R5
R6
1
C0
C6
2
C3
S0
Q4
H
Q3
G
I C O
C
I C O
A
C8
C5
LCD2
S24
C4
C5
1
2
Q7
E C B
WHA
1
1
6
FA843
KB-3300JS
KB-3300JK
KB-3300JW
5
5
6
A
B
C1
S23
C
D
E
F
G
H
6
S1
C4
1
2
Self
Clean
E
Oven
Light
Delay
Start
3
57
8
0
(On)
7
Control
Lock
Cooktop
warm
5
4
START
Minute
Plus
Sensor
Popcorn
MicroWarm
Stop
Clear
Poer
Level
Timer
Clock
Setup
Custom
Help
9
6
Sensor
Cook
Reheat
Sensor
Reheat
Defrost
3
4
F
4
Figure S-5. Printed Wiring Board of Keyboard Unit
3Minut Plus
Timer
CLEAR
STOP
C
Timed
Cook
START
3
B
Convection)
2
(Control Lock)
D
1
2
Speed Cook
S03C183
1
Broil
Bake
FA842
KB-3300JS
KB-3300JK
KB-3300JW
5
5
6
A
A
B
C
D
E
F
G
G
H
H
6
KB-3300JS
KB-3300JK
KB-3300JW
CONTROL PANEL PARTS LIST
∆” may cause undue microwave exposure.
Note: The parts marked “∆
The parts marked “*” are used in voltage more than 250V.
REF. NO.
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
1-13
1-14
1-15
1-15
1-16
1-16
1-16
1-17
1-17
1-18
1-18
1-19
1-19
1-20
1-20
1-21
1-21
1-22
PART NO.
§
HPNLCB200MRF0
DPWBFB126MRU0
LHLD-B027MRF0
XEPSD30P08XS0
LANGQB064MRP0
QSWTEB002MRE0
QSWTEB003MRE0
QSWTEB004MRE0
FW-VZB240MRE0
XBTSD40P06000
XCTSD40P08000
RLMP-B005MRE0
XOTWW40P10000
XCTSF50P12000
PSEL-B001MRE0
FUNTKB429MRK0
FUNTKB433MRK0
HDECQB001MRR0
HDECQB056MRR0
HDECQB057MRR0
LRTNPB001MRF0
LRTNPB002MRF0
FKNBKB005MRK0
FKNBKB006MRK0
GWAKPB202MRF0
GWAKPB207MRF0
HDEC-B007MRF0
HDEC-B010MRF0
HDEC-B008MRF0
HDEC-B011MRF0
PLNS-B003MRE0
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
M
M
M
M
M
M
"§" MARK: PARTS DELIVERY SECTION
DESCRIPTION
Control panel mold
Control unit
PWB holder
Screw : 3mm x 8mm
Key fixing angle
Double control
2000W control
1200W control
C/P harness
Screw : 8mm x 6mm
Screw : 8mm x 8mm
Indicator lamp
Screw
Optional oversized screw
Gasket, dark gray
Glass key unit [KB3300JS] [KB3300JK]
Glass key unit [KB3300JW]
Glass key deco [KB3300JS]
Glass key deco [KB3300JK]
Glass key deco [KB3300JW]
Retainer [KB3300JS] [KB3300JK]
Retainer [KB3300JW]
Control knob [KB3300JS] [KB3300JK]
Control knob [KB3300JW]
C/P frame [KB3300JS] [KB3300JK]
C/P frame [KB3300JW]
C/P support R [KB3300JS] [KB3300JK]
C/P support R [KB3300JW]
C/P support L [KB3300JS] [KB3300JK]
C/P support L [KB3300JW]
Lens
58
Q'TY CODE
1
1
1
6
1
1
1
2
1
8
4
2
6
6
1
1
1
1
1
1
4
4
4
4
1
1
1
1
1
1
2
AS
BY
AN
AA
AN
AW
AR
AR
BA
AA
AA
AF
AA
AA
AN
BP
BP
AK
AK
AK
AD
AD
AD
AD
AR
AR
AF
AF
AF
AF
AA
KB-3300JS
KB-3300JK
KB-3300JW
2
1
4
3
6
5
CONTROL PANEL
A
A
1-18
1-17
1-12
1-13
1-18
1-16
1-17
1-22
1-10
B
B
1-13
1-1
1-22
1-12
1-15
C
C
1-14
1-11
1-11
1-4
1-4
D
D
1-11
1-4
1-11
1-5
E
E
1-3
1-8
1-7
1-2
1-6
1-8
F
F
1-13
1-13
1-4
1-21
1-13
1-19
1-9
G
G
1-20
Actual wire harness may be different from illustration.
CONTROL PANEL HARNESS
H
1
2
H
4
3
59
5
6
KB-3300JS
KB-3300JK
KB-3300JW
COOK TOP PARTS LIST
∆” may cause undue microwave exposure.
Note: The parts marked “∆
The parts marked “*” are used in voltage more than 250V.
REF. NO.
*
*
2- 1
2- 2
2- 3
2- 4
2- 5
2- 6
2- 6
2- 7
2- 8
2- 9
2-10
2-11
2-12
2-13
2-14
2-14
2-15
2-15
PART NO.
§
FW-VZB232MRE0
RLMP-B001MRE0
RHET-B001MRE0
RHET-B002MRE0
RHET-B003MRE0
FANG-B001MRY0
FANG-B007MRY0
PFPF-B006MRE0
PCOVPB122MRP0
MLEVPB018MRE0
MLEVPB020MRE0
MLEVPB021MRE0
XOTSE40P12000
LX-CZB027MRE0
HDEC-B014MRF0
HDEC-B016MRF0
HDEC-B015MRF0
HDEC-B017MRF0
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
"§" MARK: PARTS DELIVERY SECTION
DESCRIPTION
Cook top harness
Surface indicator
Radiant heater (2000 w)
Radiant heater (1200 w)
Radiant heater (Dual)
Cook top glass assy [KB3300JS] [KB3300JK]
Cook top glass assy [KB3300JW]
Heat protect
Heat protect cover
6" spring strap
8" spring strap
9" spring strap
Screw
Shoulder screw
Right end cap [KB3300JS] [KB3300JK]
Right end cap [KB3300JW]
Left end cap [KB3300JS] [KB3300JK]
Left end cap [KB3300JW]
60
Q'TY CODE
1
1
1
2
1
1
1
1
1
2
1
1
6
4
1
1
1
1
BD
AU
BA
BA
BA
CA
CA
AH
BD
AH
AH
AH
AA
AA
AK
AK
AK
AK
KB-3300JS
KB-3300JK
KB-3300JW
2
1
A
4
3
COOK TOP
6
5
2-14
A
2-6
2-15
B
B
2-2
2-4
2-3
2-5
C
C
2-9
2-10
2-11
2-4
2-9
D
D
2-7
E
E
2-13
F
F
2-12
2-8
2-13
G
G
COOK TOP HARNESS
2-12
2-1
H
H
Actual wire harness may be different from illustration.
1
2
4
3
61
5
6
KB-3300JS
KB-3300JK
KB-3300JW
MICROWAVE DRAWER PARTS LIST
∆” may cause undue microwave exposure.
Note: The parts marked “∆
The parts marked “*” are used in voltage more than 250V.
REF. NO.
∆
*
3- 1
3- 2
3- 3
3- 4
3- 5
3- 6
3- 7
3- 8
3- 9
3-10
3-11
3-12
3-13
3-14
3-15
3-16
3-17
3-18
3-19
3-20
3-21
3-22
3-23
3-24
3-25
3-26
3-27
3-28
3-29
3-30
3-31
3-32
3-33
3-33
3-33
3-34
3-35
3-36
3-37
3-38
3-39
3-40
3-41
3-42
3-43
3-44
3-45
3-46
3-47
3-48
3-49
3-50
3-51
3-52
3-53
3-54
3-55
3-56
3-57
3-58
3-58
3-58
3-59
3-60
3-61
3-62
3-63
PART NO.
§
RTRN-B083MRE0
RV-MZA288WRE0
FDTCTA234WRKZ
FFS-BA018/KIT
RTRNPA006WRZZ
TCAUAB050MRR0
LHLD-B028MRF0
DPWBFB127MRU0
LANGTB073MRP0
LX-CZ0052WRE0
GCABDB001MRP0
PDUC-B141MRP0
PDUC-B142MRP0
PDUC-B147MRP0
PDUC-B148MRP0
FCOVPB002MRY0
PCLICB003MRE0
MSLIFB001/KIT
LANGTB074MRP0
LANGTB075MRP0
GCOVHB051MRF0
PSKR-B018MRP0
PFILWB005MRP0
LANGTB076MRP0
FC-QZB048MRK0
LBNDKB007MRP0
LX-BZA041WRE0
XOTSE40P12000
LANGTB086MRP0
LANGQA581WRPZ
XOTSE40P16000
XOTSD40P12RV0
DDORFB091MRK0A
DDORFB094MRK0
DDORFB095MRK0
PSHEPB184MRE0
FFAN-B008MRK0
FANGTB010MRK0
FANGTB011MRK0
LANGTB093MRP0
LANGTB094MRP0
RRLYDA012DRZZ
LX-NZB006MRE0
XHTSD40P08RV0
TCAUKB001MRR0
FMOTEA494WRKZ
LANGTB077MRP0
RTHM-A135WRZZ
FW-VZB245MRK0
PHOK-A079WRF0
QSW-MA085WRE0
PHOK-A080WRF0
MLEVPA214WRF0
QSW-MA---WRE0
QSW-MA085WRE0
QSOCLB010MRE0
FW-VZB246MRE0
FPWBFA380WRKZ
RLMPTA071WRE0
JHNDPB052MRM0
JHNDPB054MRM0
JHNDPB055MRM0
FGLSPB002MRY0
GCOVHB050MRF0
LX-CZB027MRE0
RMOTDA261WRZZ
TCAUHB009MRR0
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
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
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
"§" MARK: PARTS DELIVERY SECTION
DESCRIPTION
Transformer
Magnetron
Sensor assy
Monitor switch (V-16G-2C25) with fuse (20A) assembly
Touch control transformer
Monitor caution label
Power supply unit holder
Power supply
Oven lamp angle
Screw/washer
Back plate
Mag duct
Sensor duct
Exhaust duct A
Exhaust duct B
Stir cover assy
Canoe clip
Slide rail
Door support angle A
Door support angle B
Door support cover
Magnetron air guide
Lamp filter
Partition angle
HVC assy
HVC band
Screw
Screw
Partition angle L
Noise unit angle
Screw
Power unit assy screw
Door assy [KB3300JS]
Door assy [KB3300JK]
Door assy [KB3300JW]
Sealer film
Stirrer fan assy
Latch angle assy R
Latch angle assy L
Cooktop stay L
Cooktop stay R
Heater relay A
Cap nut
Screw
Stirrer cover cleaning label
Fan motor
Fan motor angle
Oven thermo
Harness assy
Latch hook R
Switch
Latch hook L
Switch lever L
Monitor switch - must replace by assy. (3-4)
Switch
Lamp socket
CPU harness
Noise filter unit
Oven lamp
Door handle [KB3300JS]
Door handle [KB3300JK]
Door handle [KB3300JW]
Oven tray assy
Choke cover
Shoulder screw
Stirrer motor
User caution label
62
Q'TY CODE
1
1
1
1
1
2
1
2
1
6
1
1
1
1
1
1
3
3
2
1
2
1
1
1
1
1
6
64
1
1
4
4
1
1
1
1
1
1
1
1
1
2
6
4
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
4
1
BE
BK
AP
AF
AP
AD
AH
BD
AF
AA
BB
AE
AK
AK
AF
AM
AB
AU
AK
AK
AB
AC
AB
AK
AP
AB
AA
AA
AK
AD
AA
AA
BD
BD
BD
AQ
AK
AH
AH
AY
AY
AH
AA
AA
AA
AZ
AG
AD
BE
AH
AE
AF
AK
AE
AE
AG
AX
AM
AF
AS
AS
AS
BK
AM
AA
AH
AA
KB-3300JS
KB-3300JK
KB-3300JW
2
1
4
3
MICROWAVE DRAWER
6
5
MICROWAVE DRAWER HARNESSES
A
3-47
3-55
A
3-14
3-28
Actual wire harness may be different from illustration.
3-11
3-28
3-61
B
B
3-28
3-27
3-28
3-45
3-39
3-28
3-15
3-3
3-25
3-28
3-28
3-12
3-22
3-62
3-10
3-42
3-30
3-28
3-28
3-29
3-28
C
3-48
3-1
3-7
3-28
3-28
3-13
3-26
3-56
C
3-54
3-28
3-4
3-44
3-28
3-57
3-9
3-24
3-27
3-28
3-2
3-46
3-49
3-28
3-18
3-63
3-6
3-40
3-36
3-61
3-32
3-8
3-28
3-10
3-28
3-52
3-19
3-5
3-41
3-10
3-51
D
3-28
3-23
3-50
3-42
3-53
3-32
D
3-18
3-6
3-35
3-43
3-28
3-42
3-37
3-38
3-16
3-28
3-18
3-28
3-10
3-17
3-20
3-42
3-32
3-21
E
3-41
E
3-41
3-19
3-60
3-21
3-33
3-34
F
F
3-28
G
G
3-31
3-28
3-58
H
H
3-31
3-59
1
2
4
3
63
5
6
KB-3300JS
KB-3300JK
KB-3300JW
OVEN PARTS LIST
∆” may cause undue microwave exposure.
Note: The parts marked “∆
The parts marked “*” are used in voltage more than 250V.
REF. NO.
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
4-26
4-27
4-28
4-29
4-30
4-31
4-32
4-33
4-34
4-35
4-36
4-37
4-38
4-39
4-40
4-41
4-42
4-43
4-44
4-45
4-46
4-47
4-47
4-48
4-48
PART NO.
§
PCUSGB050MRP0
PCUSGB051MRP0
TINSEB401MRR0
PCOVPB136MRP0
GLEGPB006MRE0
PFPF-B007MRE0
PFPF-B009MRE0
FHNG-B052MRE0
PCOVPB131MRE0
PPIPFB003MRE0
MROD-B008MRE0
LBSHZB001MRE0
MSPRTB024MRE0
LANGTB079MRP0
PCOVPB127MRE0
QSOCLB012MRE0
LANG-B018MRE0
LBNDKB011MRE0
FMOTEB051MRE0
QSW-PB002MRE0
FH-HZB001MRE0
RLMPTB001MRE0
LANGQB065MRP0
PCOVPB130MRP0
FSW-MB039MRK0
LANGKA760WRP0
XOTSE40P12000
TCAUAB048MRR0
GCABDB003MRP0
QCNCYB001MRE0
FANG-B003MRE0
LANGQB066MRP0
LX-BZA041WRE0
TCAUAB057MRR0
LX-CZB029MRE0
LBNDKB012MRP0
RHET-B006MRE0
RHET-B007MRE0
XOTWW40P10000
FW-VZB247MRE0
LANGTB092MRP0
DW-VZB180MRK0
QFS-TA038WRE0
LX-NZB007MRE0
LX-CZB028MRE0
PCOVWB001MRE0
GCABUB135MRP0
GCABUB138MRP0
GCABUB136MRP0
GCABUB139MRP0
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
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
"§" MARK: PARTS DELIVERY SECTION
DESCRIPTION
Thermal cushion
Cross flow motor cushion
Tech sheet
Heat cover
Leveling screw
Heat protect R
Heat protect Top
Receptacle hinge
Hinge cover
Vent tube
Latch rod
Bushing
Bushing spring
Oven spring
Oven light cover
Oven light housing
Oven light receptacle
Light cover retainer
Blower motor
Light switch
Thermister
Oven lamp
Power cord angle
Power cover
Select switch assy
Switch lever
Screw
DHHS caution label
Rear plate
Terminal block kit
Latch motor assy
Ground plate
Screw
Anti-tip label
Terminal screws
Element support hanger
Top heater (3000 W)
Bottom heater (2600 W)
Screw
Power supply harness
Motor blower angle
Harness assy
Oven thermo
Terminal block nut
Door hinge screw
Insulation tube
Side cabinet R [KB3300JS] [KB3300JK]
Side cabinet R [KB3300JW]
Side cabinet L [KB3300JS] [KB3300JK]
Side cabinet L [KB3300JW]
64
Q'TY CODE
1
1
1
1
4
1
1
2
2
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
37
1
1
1
1
1
4
1
2
2
1
1
8
1
1
1
1
6
4
1
1
1
1
1
AG
AG
AK
AK
AE
AW
AW
AK
AD
AR
AM
AG
AA
AE
AK
AE
AH
AB
BF
AF
AT
AE
AE
AG
AS
AG
AA
AB
BE
AK
AZ
AD
AA
AA
AA
AD
AX
AW
AA
BB
AH
BE
AK
AA
AA
AC
BD
BD
BD
BD
KB-3300JS
KB-3300JK
KB-3300JW
2
1
4
3
6
5
OVEN UNIT HARNESSES
4-42
4-40
A
A
Actual wire harness may be different from illustration.
OVEN UNIT
B
B
4-34
4-28
4-3
4-27
C
C
4-47
4-27
4-26
4-24
4-10
4-39
4-2
4-27
4-31
4-1
4-27
4-17
D
4-19
D
4-27
4-25
4-33
4-23
4-35
4-41
4-4
4-39
4-27
4-27
4-30
4-43
4-44
4-39
4-11
4-13
4-27
4-12
4-14
4-21
4-39
4-46
E
4-39
E
4-20
4-48
4-29
4-6
4-16
4-8
4-22
4-9
4-15
F
F
4-7
4-45
4-39
4-18
4-8
4-9
4-37
4-45
4-39
4-5
4-36
G
G
4-38
H
H
1
2
4
3
65
5
6
KB-3300JS
KB-3300JK
KB-3300JW
OVEN DOOR PARTS LIST
∆” may cause undue microwave exposure.
Note: The parts marked “∆
The parts marked “*” are used in voltage more than 250V.
REF. NO.
55555555-
1
1
1
2
3
3
3
4
PART NO.
§
DDORFB092MRK0
DDORFB096MRK0
DDORFB097MRK0
PPACGB021MRE0
JHNDPB053MRF0
JHNDPB056MRF0
JHNDPB057MRF0
XOTWW40P12000
M
M
M
M
M
M
M
M
DESCRIPTION
Door assy [KB3300JS]
Door assy [KB3300JK]
Door assy [KB3300JW]
Oven door seal gasket
Door handle [KB3300JS]
Door handle [KB3300JK]
Door handle [KB3300JW]
Screw
66
"§" MARK: PARTS DELIVERY SECTION
Q'TY CODE
1
1
1
1
1
1
1
6
BY
BY
BY
AW
BB
BB
BB
AA
KB-3300JS
KB-3300JK
KB-3300JW
1
2
4
3
6
5
OVEN DOOR
A
A
5-2
B
B
C
C
5-1
D
D
E
E
5-4
F
F
5-4
5-3
G
G
5-5
H
H
1
2
4
3
67
5
6
KB-3300JS
KB-3300JK
KB-3300JW
PACKING PARTS LIST
∆” may cause undue microwave exposure.
Note: The parts marked “∆
The parts marked “*” are used in voltage more than 250V.
REF. NO.
66666666666-
1
2
3
4
5
6
7
8
9
9
9
PART NO.
§
UAMI-B013MRM0
PSLD-B001MRE0
PSRAHB001MRE0
TINSEB389MRK0
TINSEB390MRR0
FAMI-B007MRK0
FANGKB024MRK0A
TINSEB392MRR0
FANG-B004MRT0
FANG-B005MRT0A
FANG-B006MRT0A
M
M
M
M
M
M
M
M
M
M
M
DESCRIPTION
Rack
Broiler pan insert
Broiler pan
Operation manual
Installation sheet
Extended rack assy
Anti-tip kit
Anti-tip template
Back splash [KB3300JS]
Back splash [KB3300JK]
Back splash [KB3300JW]
68
"§" MARK: PARTS DELIVERY SECTION
Q'TY CODE
2
1
1
1
1
1
1
1
1
1
1
AV
AW
AW
AM
AG
BM
AV
AD
BQ
BQ
BQ
KB-3300JS
KB-3300JK
KB-3300JW
PACKING
PACKING CASE
WOOD TOP FRAME
6-9 BACK SPLASH
SUPPORT CORNERS
BACK SPLASH HOLDER
WOOD BOTTOM FRAME
6-3 BOILER INSERT
6-2 BOILER PAN
6-8 ANTI-TIP TEMPLATE
6-4
OPERATION MANUAL
6-5 INSTALLION MANUAL
6-7 ANTI-TIP KIT
6-6
6-1
Non-replaceable items
*
Not included in early models.
69
EXTENDED RACK ASSY *
OVEN RACK x 2
KB-3300JS
KB-3300JK
KB-3300JW
COPYRIGHT © 2004 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.
2004 SHARP CORP. (4R2.00E) Printed in U.S.A
70