GE JMV1442, JMV1425, JMV1430, JMV1451, JMV1460 Technical Service Manual
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GE Consumer Service Training
IMPORT ANT SAFETY NOTICE
This information is intended for use by individuals possessing adequate backgrounds of electrical, electronic and mechanical experience. Any attempt to repair a major appliance may result
in personal injury and property damage. The manufacturer or seller cannot be responsible for
the interpretation of this information, nor can it assume any liability in connection with its use.
DISCONNECT POWER BEFORE SERVICING
IMPORTANT - RECONNECT ALL GROUNDING DEVICES
All parts of this appliance capable of conducting electrical current are grounded. If grounding wires, screws, straps,
clips, nuts or washers used to complete a path to ground are removed for service, they must be returned to their
original position and properly fastened.
PRECAUTIONS TO BE OBSERVED
BEFORE AND DURING SERVICING TO
AVOID POSSIBLE EXPOSURE TO
EXCESSIVE MICROWAVE ENERGY
A. A microwave emission check should be per formed prior to servicing if the oven is operative.
B. Do not operate or allow the oven to be operated
with the door open.
C. If the oven operates with the door open:
I ) Instruct the user not to operate the oven and
2) contact the manufacturer and the Center for
Devices and Radiological Health immediately .
D. 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
E. 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.
F. Any defective or misadjusted components in the
interlock, monitor , door seal, and microwave
generation and transmission systems shall be
repaired, replaced or adjusted by procedure
described in this manual before the oven is
released to the owner.
G. A microwave leakage check to verify compli ance with the federal performance standard
should be performed on each oven prior to
release to the owner .
MICROW AVE LEAKAGE TEST
I . Place 275 ml. water in 600 ml. beaker
(WB64X5010).
2. Place beaker in center of oven shelf.
3. Set meter to 2450 MHz scale.
4. Turn oven "ON" for 5 minute test.
5. Hold probe perpendicular to surface being tested
and scan surfaces at rate of one inch/second. Test
following areas:
• Entire perimeter of door and control panel
• Viewing surface of door window
• Exhaust vents
6. Maximum leakage 4MW/CM2.
7. Record date on service invoice and microwave
leakage report.
NOTE: MAXIMUM ALLOW ABLE LEAKAGE
IS 5MW/CM2. 4MW/CM2 IS USED TO ALLOW FOR MEASUREMENT AND METER
ACCURACY.
Inform the manufacturer of any oven found to have
emission in excess of 5MW/CM2 Make repairs to bring
the unit into compliance at no cost to owner and try to
determine cause. Instruct owner not to use oven until
it has been brought into compliance.
1
Table of Contents
SAFETY INFORMATION............................................................................................................................ 1
CONTENTS ................................................................................................................................................ 2
KEYPADS ................................................................................................................................................... 3
KEYPADS/KEYPAD TEST PROCEDURE .................................................................................................. 4
MODEL FEATURE COMPARISON............................................................................................................ 5
SPECIFICATIONS, INSTALLATION, VENTING........................................................................................ 6
LIGHTS, FILTERS, HELP, CLOCK............................................................................................................. 7
DELAY START, TIMER ON/OFF, REMINDER/ START/PAUSE, CHILD LOCKOUT ................................ 8
TURNTABLE, VENT FAN, SURFACE LIGHT, SOUND LEVEL, AUTO NITE LIGHT............................... 9
CUSTOM COOK, ADD 30 SECONDS, TEMP COOK.............................................................................. 10
POPCORN, REHEAT, BEVERAGE, MESSAGE ..................................................................................... 11
COOK, SENSOR COOKING .................................................................................................................... 13
SINGLE FOOD, OPERATING SEQUENCE .............................................................................................. 14
GRILLE REMOVAL, CONTROL PANEL, SMART BOARD ..................................................................... 15
KEYPANEL, TRANSFORMER, INTERLOCK SWITCHES, MONITOR SWITCH ..................................... 16
FUSE, PRIMARY INTERLOCK TEST ....................................................................................................... 17
MONITOR TEST, ADJUST INTERLOCKS, DOOR ADJUSTMENT ........................................................ 18
DOOR ASSEMBLY..................................................................................................................................... 19
ANTENNA, TURNTABLE, HV CAPACITOR ............................................................................................. 20
RECTIFIER/DIODE, THERMAL CUTOUTS ............................................................................................... 21
HOOD, BOTTOM THERMAL CUTOUTS ................................................................................................... 22
GAS SENSOR TEST, SENSOR TEST....................................................................................................... 23
SENSOR DETECTION TEST, PROBE, BLOWER......................................................................................24
RUN CAPACITOR, POWER TRANSFORMER, MAGNETRON FAN....................................................... 25
POWER PERFORMANCE TEST ............................................................................................................... 27
TROUBLESHOOTING GUIDE ................................................................................................................... 28
SCHEMATIC/WIRING DIAGRAMS ............................................................................................................ 29
PARTS PAGES........................................................................................................................................... 33
2
1.4 cu. ft. and 1.6 cu. ft. Keypanels
JVM1630
JVM1650 JVM1660
JVM1630/JVM1631 JVM1650/JVM1651
JVM1660
JVM1420
JVM1420
JVM1430
JVM1430
3
JVM1440/JVM1640
JVM1440
(same keypad)
1.4 cu. ft. and 1.6 cu. ft. Keypanels
JVM1460JVM1450
JVM1450
JVM1460
KEYP ANEL TEST
If necessary the key panel pads can be verified by a continutity test. For ease of handling the key
panel should be removed and placed on a flat surface.
RIBBON
PAD CONN PAD CONN
BEEPER VOLUME 9-12 DEFROST 4-15
ADD 30 SEC. 4-11 AM/PM 9-13
POWER LEVEL 3-14 TIMER 4-13
SURFACE LIGHT 7-12 VENT FAN 8-12
CLOCK 7-13 1 9-16
POPCORN 7-11 2 8-16
AUTO NITE LIGHT 6-12 3 7-16
DELAY START 6-13 4 6-16
TURNTABLE 5-12 5 5-16
REMINDER 5-13 6 4-16
TIME COOK 5-15 7 9-15
START 3-11 8 8-15
REHEAT 8-11 9 7-15
VEGETABLE 9-10 0 6-15
BEVERAGE 6-11 BEVERAGE 9-11
POTATOES 6-10
JVM1660 ONLY
TEMPCOOK/ROST 3-15 CUSTOM 1 8-10
GROUND MEAT 3-10 CUSTOM 2 7-10
CHICKEN PIECES 4-10 MESSAGE 8-13
FISH FILLETS 5-10 APPOINTMENT 3-13
SCHEDULER
JVM 1650 ONLY
SNACKS 7-14 COOK 8-14
RIBBON
PAD CONN PAD CONN
SOUND LEVEL 9-12 DEFROST 4-15
ADD 30 SEC. 4-11 AM/PM 9-13
POWER LEVEL 3-14 TIMER 4-13
SURFACE LIGHT 7-12 VENT FAN 8-12
CLOCK 7-13 1 9-16
POPCORN 7-11 2 8-16
AUTO NITE LIGHT 6-12 3 7-16
DELAY START 6-13 4 6-16
TURNTABLE 5-12 5 5-16
REMINDER 5-13 6 4-16
TIME COOK 5-15 7 9-15
START 3-11 8 8-15
REHEAT 8-11 9 7-15
JVM1460 ONLY
TEMPCOOK/ROST 3-15 CUSTOM 1 8-10
GROUND MEAT 3-10 CUSTOM 2 7-10
CHICKEN PIECES 4-10 MESSAGE 8-13
FISH FILLETS 5-10 BEVERAGE 9-11
VEGETABLE 9-10 POTATOES 6-10
JVM 1450 ONLY
BEVERAGE 6-11 COOK 8-14
SNACKS 7-14
4
FEATURE COMPARISON JVM1460 VS. JVM1660
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5
OVER THE RANGE 1.4 CU. FT.(JVM1460), AND
1.6 CU. FT. (JVM1660) SPACEMAKER
A complete new redesign 1.4 and 1.6 cu. ft. Spacemaker is
being introduced in the model line.
The most significant change is in the control and the
enlarged cavity size. It now has a scrolling message on the
control and the cavity has been increased to 1.4 and
1.6cu.ft. The JVM1660 has 1.6 cu. ft., the JVM1460 is 1.4
cu. ft., another feature has been added for the
JVM1660,
rated at 1000 watts vs 950 watts for the JVM1460.
APPOINTMENT SCHEDULER
. The JVM1660 is
The new models are:
1.4 cu. ft. 1.6 cu.ft.
JVM1460 JVM1660
JVM1450 JVM1650/51
JVM1440 JVM1640/42
JVM1430 JVM1630/31
JVM1420/25
APPOINTMENT
SCHEDULER and
CALENDAR
JVM1660
JVM1460
WEIGHT
The microwave oven weighs 72 pounds.
INSTALLATION
The Spacemaker is supported by a special bracket assembly
(mounting system) supplied with the oven. The bracket
assembly must be mounted to the wall with toggle bolts
through the wall, and a lag screw into a wall stud. The unit
is mounted to four tabs on lower mounting plate. Four bolts
are run down through the kitchen cabinet bottom and into the
oven case to pull the oven up against the bottom of the
kitchen cabinet.
NOTE: For easier removal and personal safety it is recommended that two people remove this product.
CAUTION!
The mounting surface must be capable of supporting the
cabinet load, in addition to the72 pound product, plus additional loads of up to 50 pounds or a total weight of 122
pounds. This product cannot be installed to cabinet arrangements such as an island or peninsula. It must be mounted to
both a top cabinet and wall.
SURF ACE LIGHTS
Two 40-watt screw base incandescent tubular bulbs
(WB36X10003 - 40T61/2/2) are located on the bottom
outside of the grease filters. The bulbs are user replaceable
by removing one screw and lowering access cover. The
bulbs could be difficult to remove when replaced for the first
time, a silicone glue is used to secure them during shipping.
MOUNTING SCREWS
ALIGMENT
PIN
CUT OUT
MOUNTED TO WALL PLATE USING FOUR
HINGES ON WALL PLATE TO THE FOUR
SLOTS ON MICROWAVE
6
SURF ACE LIGHTS
Two 40-watt screw base incandescent tubular bulbs
(WB36X10003 - 40T61/2/2) are located on the bottom
outside of the grease filters. The bulbs are user replaceable
by removing one screw and lowering access cover. The
bulbs could be difficult to remove when replaced for the first
time, a silicone glue is used to secure them during shipping.
CA VITY LIGHT
A special 40-watt screw base incandescent bulb
(WB02X4235) is located in the top of the oven cavity at the
front. It is user replaceable by removing the top grill (2
screws). The bulb is then accessible by removing a metal
cover (2 screws).
GREASE FILTERS
Grease filters should be cleaned once a month. Soak the
filter in a solution of hot water and detergent. Use of
ammonia products will darken the metal. Rinse, shake and
remove moisture before replacing. To remove: grasp the
"finger hold" and slide to the rear. Pull filter downward to
release. To replace: slide filter into the frame slot on the
back of the opening, then lift up until it locks in place.
COOKING COMPLETE REMINDER
After the completion of all defrost and cook cycles (except
Temp. Cook/Hold) the control will scroll "FOOD IS READY"
and beep once every minute and rescroll message until
door is opened or clear/off pad is touched.
HELP
HELP pad displays feature information and helpful hints.
Press HELP, then select a feature pad.
POWER UP
At power up or after a power interruption the display lights
all segments and function indicator words for 15 seconds,
and then "PLEASE PRESS CLOCK" scrolls.
CLOCK
To set the clock, touch CLOCK and enter the time-of-day.
Then enter AM/PM. Press "ST ART" (or CLOCK) to start the
clock. NOTE: The display can be turned off by pressing and
holding the 0 number pad for 3 seconds.
SCROLL SPEED
The scroll speed of the display can be changed. Press and
hold the AM/PM pad about 3 seconds to bring up the
display . Select 1-5 for slow to fast scroll speed.
CLEAR/OFF
When this pad is touched, it shuts off the oven and erases
all settings (except for the time of day).
7
DELA Y ST ART
The DELA Y START function provides a 24-hour delay
start for any program or sequence of programs. Since it
is a 24-hour timer, the start time can be delayed up to a
maximum of 23 HOURS and 59 MINUTES. NOTE: The
time-of-day clock must be set for the DELA Y START ./
function to work. To Use Delay Start:
1. Touch DELA Y START pad.
2. Enter the time of day you want the oven to start. Be
sure the microwave oven shows the correct time of day.
3. Enter desired cooking program.
4. Touch START pad. The oven will automatically start
at the desired time.
5. The delay start time will be displayed plus "DS".
TIMER ON/OFF
The TIMER ON/OFF operates as a minute timer and
can be used at any time, even when the oven is
operating. To Use Timer On/Off
1. Press TIMER ON/OFF.
2. Enter time you want to count down.
3. Press TIMER ON/OFF to start.
NOTE: When time is up, the oven will signal. To turn
the timer signal offpress TIMER ON-OFF. The timer
indicator will be lit while TIMER ON-OFF is operating.
REMINDER
The Reminder feature, like an alarm clock, will signal
(fast beeps) when a desired time of day is reached.
Unlike earlier models this feature can be used at any
time, even when the unit is operating. To Use Reminder:
1. Touch REMINDER pad.
2. Enter the desired time of day (23 hours and 59
minutes maximum) that you want the oven to signal.
Clock must show correct TOD.
3. Select AM/PM.
4. Touch REMINDER pad.
5. When set time is reached oven will signal with fast
beeps and a scrolling message to touch REMINDER
pad.
NOTE: T o remove setting, touch REMINDER pad, then
0.
TIMER
ON/OFF
START/PAUSE
In addition to starting many functions. START/P AUSE
allows you to stop cooking without opening the door or
clearing the display .
CHILD LOCK-OUT
This feature is to lock the control panel to prevent the
microwave from being accidentally started. To lock or
unlock the control press and hold the CLEAR/OFF pad
for 3 seconds.
When the control panel is locked, an "L" will be displayed to the extreme right.
8
TURNTABLE
The turntable should be left on for the best cooking results,
however when a large dish must be used the turntable can be
turned off and the rack used. Illustrations shown are the
correct ways to use the rack and turntable. Press TURNT ABLE to turn the turntable off or on.
NOTE: it is normal for the turntable at times to become hot to
the touch.
VENT FAN
The vent fan removes steam and other vapors from surface
cooking. Press VENT FAN once for high speed, twice for low
speed, and a third time to turn the fan off.
NOTE:
JVM1600s’
have TWO
shelves.
SURF ACE LIGHT
The surface lights have been moved to the outside of the
bottom of the oven and now are a tubular bulb. Press SURFACE LIGHT once for bright light, twice for the night light and
three times to turn the light off.
BEEPER VOLUME
The beeper sound level can be adjusted up, down, or off.
Touch BEEPER VOLUME and choose 0-3 for mute to loud.
AUTO NITE LIGHT
This feature will allow the night light to be turned on and off at
any time. To Use Auto Nite Light:
1. Press AUTO NITE LIGHT.
2. Enter the time you want the light to turn on and select AM/
PM.
3. Press AUTO NITE LIGHT again and enter the time you
want the light to turn off and select AM/PM.
4. Press AUTO NITE LIGHT.
NOTE: NITE will stay lit to remind you that the feature is set.
Y ou can review the auto nite light settings by pressing AUT O
NITE LIGHT. To erase the settings and turn off the feature
press AUTO NITE LIGHT, then 0.
9
TIME COOKING FUNCTIONS
or
CUSTOM COOK I & ll (TIME COOK I & ll)
The Custom Cook function can be programmed for one or
two time cook cycles in the same program. The two cycle
feature is useful if a power level change is desired during the
cooking operation. Each function can be set for a maximum
of 99 minutes and 99 seconds. Custom Cook I & 2 can be
programmed in any sequence but it will always execute
Custom Cook I first.
EXPRESS COOK
This "instant on" feature will provide 1-6 minutes of cooking
at power level 10 as soon as it is selected.
ADD 30 SECONDS
The ADD 30 SECONDS feature provides "instant on" at high
power ( 10) for 30 seconds or can be used to add 30 seconds to any timed function.
DEFROSTING
DEFROST AUTO/TIME
When auto defrosting press this pad once then select food
weight. For time defrost press this pad twice then select time.
TEMPERA TURE COOKING FUNCTIONS
TEMP COOK/ROAST
There are three ways to use this feature for cooking by
temperature.
1. Set the temperature needed.
2. Temperature is automatically selected for cooking roasts
medium or well. Roast Medium - Press TEMP COOK/
ROAST twice. Roast Well - Press TEMP COOK/ROAST
three times.
3. Set for simmer; press TEMP COOK/ROAST 4 times.
NOTE: The turntable will not turn when the probe is in
use.
When setting to the temperature needed, after the temperature is reached the microwave will signal. Food will be held at
this temperature for 60 minutes and the oven will beep when
the hold time is complete.
When using the automatic roast feature (medium or well) the
microwave will signal when its time to turn the roast over. The
oven continues to cook after the signal whether or not the
roast is turned.
The simmer feature heats food to 180' F. and will hold at that
temperature up to 12 hours or until you remove it and press
CLEAR/OFF.
10
CONVENIENCE FEATURES (TIME COOKING)
POPCORN
The popcorn feature is a pre-timed function that allows
cooking prepackaged popcorn in bags of 1.75, to
3.5 ounce bags.
To Use Popcorn:
REHEAT GUIDE
I - Pasta 2: 10 per serving
2 - Meats, casseroles, pizza 1:25 per serving
3 - Fruits and Vegetables 1: 15 per serving
4 - Beverages. 8-10 ounces 1:35 per serving
5 - Sauces and gravies 1: 15 per serving
6 - Plate of leftovers 3:45.
2-3 foods, 4 ounces each,
HOW TO ADJUST THE POPCORN PROGRAM
TO PROVIDE A SHORTER OR LONGER
COOKING TIME
If popcorn is undercooked you can make an adjustment
by adding time.
- Touch the POPCORN pad and then touch #9, this will
add 20 seconds more cooking time.
If popcorn is overcooked you can make an adjustment by
subtracting time.
- Touch the POPCORN pad and then touch # 1, this will
subtract 20 seconds of cooking time.
REHEAT
This feature reheats 1 -3 servings of precooked food.
To Use Reheat:
1. Press REHEA T
2. The oven signals when steam is sensed and the time
remaining begins counting down
To reduce time by 10%
--Press 1 after feature pad.
To add 10% to cooking time
--Press 9 after feature pad.
Turntable on & turntable off & no turntable
BEV - I minute 50 seconds per serving
Turntable on & turntable off
I - BAKERY 20 sec/item (1-4)
2 - SANDWICH 55 sec/sand (1-2)
3 - PIZZA 60 sec/slice (1-4)
4 - TOPPING 20 sec/serv (1-4)
5 - SOUPS 24 sec/oz. (8-40 oz)
6 - CHEESE 9 sec/oz. (4-16 oz)
(less time) (more time)
BEVERAGE
This feature is used to reheat a beverage the size of a
cup, one serving. The serving size can be changed to 2 or
3 serving size by touching that number right after
touching the beverage pad.
Note: beverages heated with this feature may be very
hot, remove container with care.
MESSAGE
The message pad allows you to record a short spoken
message.
1. Press MESSAGE.
2. Speak toward the control panel in a clear, normal voice.
3. Press MESSAGE again to save the message, immediately
or allow the time to count down to save it automatically .
To cancel a message during recording, press 0
To erase a recorded message, press 0 during playback.
11
COOK
The oven sets the cooking time and power level for a specific
food category . To Use Cook:
1. Touch COOK.
2. Select food type , see guide.
3. Enter weight in ounces.
4. Touch START.
NOTE: To display the food type and remaining cooking
time, touch the COOK pad.
SENSOR COOKING FEA TURES
(JVM MODELS ONLY)
Note: Don't use metal shelf with Sensor
Cooking.
SENSOR COOKING CONDITION
Using the sensor assisted cooking codes, the foods are
cooked without calculating time, power level or quantity .
When the oven senses enough steam from the food, it relays
the information to the microprocessor which will calculate the
remaining cooking time and power level needed for best
results. When the food is cooked, water vapor is developed.
The sensor "senses" the vapor and its resistance increases
gradually . When the resistance reaches the value set according to the menu, supplementary cooking is started.
The time of supplementary cooking is determined by experiment with each food category and entered into the microprocessor . An example of how the sensor works: (POTATOES)
1. Potatoes at room temperature. V apor is emitted very
slowly.
2. Heated potatoes. Moisture and humidity are emitted
rapidly.
3. The sensor detects the moisture and humidity and calculates cooking time and variable power.
SENSOR COOKING PREFERENCE CONTROL
When using the sensor assisted cooking codes, except for
CANNED VEG and FROZEN VEG, it is possible to adjust the
oven cooking time by 10%.
T o Use Sensor Cooking Preference Control:
- By immediately touching the number I pad after touching a
sensor assisted pad the oven will turn off 10% sooner.
- By pressing the number 9 pad after touching a sensor
assisted pad the oven will cook 10% longer.
BEVERAGE
This instant on pad reheats beverages by sensing the
steam with the sensor system.
NOTE: Maximum heating time is 4: 00, preference
control not available on beverage pad.
12
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