GE SpaceMakerXL JMV1420 How to use

gGE Consumer Service Training

1
IMPORTANT SAFETY NOTICE
This information is intended for use by individuals possessing adequate backgrounds of electri-
cal, 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.
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.
MICROWAVE 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 ALLOWABLE LEAKAGE
IS 5MW/CM2. 4MW/CM2IS USED TO AL-
LOW FOR MEASUREMENT AND METER
ACCURACY.
Inform the manufacturer of any oven found to have
emission in excess of 5MW/CM
2
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.
DISCONNECT POWER BEFORE SERVICING

2
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

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JVM1630 JVM1650 JVM1660
JVM1430 JVM1440
JVM1420
1.4 cu. ft. and 1.6 cu. ft. Keypanels
JVM1630/JVM1631 JVM1650/JVM1651 JVM1660
JVM1420 JVM1430 JVM1440/JVM1640
(same keypad)

4
1.4 cu. ft. and 1.6 cu. ft. Keypanels
JVM1460
JVM1450
KEYPANEL 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
JVM1460JVM1450

5
FEATURE COMPARISON JVM1460 VS. JVM1660
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6
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, APPOINTMENT SCHEDULER . The JVM1660 is
rated at 1000 watts vs 950 watts for the JVM1460.
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
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 recom-
mended 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 addi-
tional loads of up to 50 pounds or a total weight of 122
pounds. This product cannot be installed to cabinet arrange-
ments such as an island or peninsula. It must be mounted to
both a top cabinet and wall.
SURFACE 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
CUT OUT
MOUNTEDTO WALL PLATE USING FOUR
HINGES ONWALL PLATETOTHE FOUR
SLOTS ON MICROWAVE
ALIGMENT
PIN
JVM1660 JVM1460
APPOINTMENT
SCHEDULER and
CALENDAR

7
SURFACE 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 ship-
ping.
CAVITY 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 "START" (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).

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DELAY START
The DELAY 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 DELAY START./
function to work. To Use Delay Start:
1. Touch DELAY 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 Re-
minder:
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: To remove setting, touch REMINDER pad, then
0.
START/PAUSE
In addition to starting many functions. START/PAUSE
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 dis-
played to the extreme right.
TIMER
ON/OFF

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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 TURN-
TABLE 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.
SURFACE LIGHT
The surface lights have been moved to the outside of the
bottom of the oven and now are a tubular bulb. Press SUR-
FACE 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.
You can review the auto nite light settings by pressing AUTO
NITE LIGHT. To erase the settings and turn off the feature
press AUTO NITE LIGHT, then 0.
NOTE:
JVM1600s’
have TWO
shelves.