Amana A1200S Assembly instructions

Models and manufacturing
numbers in this manual are
located below and on page 4.
A1200S P4020008302
A1225S P1185701M
FS10EVP P4020003901
FS10EVP.000
FS10EVP.A
FS10EVP.B
FS10EVP.C
FS10EVP.D
FS10EVP.E
FS10EVP.F
FS11 P1302104M
FS11EVP P1186001M
FS14EVP P4020004901
FS14EVP.000
FS14EVP.A
FS14EVP.B
FS14EVP.C
FS14EVP.D
FS14EVP.E
FS14EVP.F
FS16EVP P1185901M
FS17 P1302105M
FS17EVP P1185902M
FS20 P1302106M
FS20EVP P1185903M
FSP10 P4020004102
FSP10.A
FSP10.B
FSP10.C
FSP10.D
FSP10.E
FSP10SS P4020004103
FSP11 P1185802M
FSP11 P1302102M
FSP11LW P1302103M
FSP11LW P1185805M
FSP11SS P1185803M
VEND10 P4020004101
VEND10.000
VEND10.A
VEND10.B
VEND10.C
VEND10.F
VEND10.G
VEND10.H
VEND10.J
VEND10.K
VEND10.L
VEND11 P1185801M
VEND11B P1185804M
VEND11 P1302101M
RE220002
Revison 6
March 1999
This manual is to be used by qualified appliance
technicians only. Amana does not assume any
responsibility for property damage or personal
injury for improper service procedures done by
an unqualified person.
Commercial
Microwave
Oven
Service
This manual replaces RE220002 Rev. 5.

RE220002 Rev. 6 2
WARNING
!
Precautions to be observed before and during
servicing to avoid possible exposure to excessive
microwave energy.
(A) Do not operate or allow 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:
• Interlock operation
• Proper door closing
• Sealandsealingsurfaces(arcing,wear,andother
damage)
• Damage to or loosening of hinges and latches
• 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 oven is released to
the consumer.
(E) Check microwave leakage to verify compliance
with the Federal Performance Standard should be
performed on each oven prior to release to the
consumer.
WIRING
Good service practice is to never route wiring over termi-
nalsand/orsharpedges.Thisappliestoanywiringwithout
regard to the circuit voltage. Wire insulation material and
thickness is designed and regulated for electrical spacing
purposeonly,butcannotalwaysberelieduponbecauseof
possible cuts and/or abrasions, which can occur during
servicing.
WARNING
!
To avoid risk of electrical shock, injury, or death, make
sure these grounding instructions are followed.
Grounding Instructions
WARNING
!
Do not remove grounding prong when installing
grounded appliance in a home or business that does
not have three wire grounding receptacle, under no
condition is grounding prong to be cut off or removed.
It is the personal responsibility of the consumer to
contact a qualified electrician and have properly
grounded three prong wall receptacle installed in
accordance with appropriate electrical codes
Shouldatwoprongadapterplugberequiredtemporarilyit
is the personal responsibility of the consumer to have it
replacedwithproperlygroundedthreeprongreceptacleor
the two prong adapter properly grounded by a qualified
electricianinaccordancewithappropriateelectricalcodes.
Servicing of Grounded Products
Thestandardacceptedcolorcodingforgroundingwiresis
GREEN or GREEN WITH YELLOW STRIPE. These
ground leads are NOT to be used as current carrying
conductors. It is extremely important that the technician
replace any and all grounds prior to completion of the
servicecall.Undernoconditionshouldgroundwirebeleft
off causing a potential hazard to technicians and con-
sumer.
Important Product Information

3 RE220002 Rev. 6
Table of Contents
IMPORTANT PRODUCT INFORMATION........................................................................................................ 2
MODEL AND MANUFACTURING NUMBERS.................................................................................................4
IMPORTANT SAFETY INFORMATION ........................................................................................................... 6
IMPORTANT PRODUCT GROUNDING AND OUTLET INFORMATION ................................................... 7
SPECIFICATIONS............................................................................................................................................ 9
CAUTIONS AND WARNINGS to be Observed During Disassembly and Troubleshooting ............................. 10
GENERAL INFORMATION AND OPERATING INSTRUCTIONS....................................................................11
TEST PROCEDURES...................................................................................................................................... 13
DISASSEMBLY PROCEDURES ......................................................................................................................21
SERVICE INFORMATION................................................................................................................................ 28
PROCEDURE FOR MEASURING MICROWAVE ENERGY LEAKAGE ..........................................................29
TROUBLESHOOTING ..................................................................................................................................... 30
VEND-10, 11 PROGRAMMING INSTRUCTIONS ...........................................................................................41
FS-10, 11, 14, 16 PROGRAMMING INSTRUCTIONS .....................................................................................45
FSP-10, 11 PROGRAMMING INSTRUCTIONS ..............................................................................................48
A1200S, A1225S PROGRAMMING INSTRUCTIONS .................................................................................... 50
SCROLLING MESSAGE PROCEDURE ..........................................................................................................55
WIRING SCHEMATIC/DIAGRAM .................................................................................................................... 56
REPLACE MANUAL C-SM033 WITH THIS MANUAL, RE220002.
REV. 1—ADDED MODEL FSP10SS, P4020004103 TO MANUAL. THIS MODEL IS SIMILAR TO MODEL
FSP10,P4020004102.
REV. 2—ADDED MODEL FSP11SS, P1185803M TO MANUAL. THIS MODEL IS SIMILAR TO MODEL
FSP11, P1185802M.
REV. 3—ADDED MODEL VEND11B, P1185804M, P1302101M; FSP11SS, P1302102M; FSP11LW, P1302103M;
FSP11EVP, P1302104M; FS17EVP, P1302105M; AND FS20EVP, P1302106M TO MANUAL.
REV.4—ADDED MODELS FS17EVP, P1185902M; AND FS20EVP, P1185903M TO THIS MANUAL.
REV. 5—CORRECTED MODEL INDENTIFICATION FS17EVP TO FS17; FS20EVP TO FS20; FSP11EVP TO
FSP11; FS11SS TO FS11; AND VEND11B TO VEND 11 ALONG WITH ASSOCIATED TEXT. ADDED
FSP11LW, P1185805M.
REV. 6—CORRECTED MODELS ASSIGNED TO WIRING DIAGRAM, AND ADDED NEW CONTROLLER
TESTING PROCEDURE.

RE220002 Rev. 6 4
MODEL M/N
A1200S P4020008302
A1225S P1185701M
FS10EVP P4020003901
FS10EVP.000
FS10EVP.A
FS10EVP.B
FS10EVP.C
FS10EVP.D
FS10EVP.E
FS10EVP.F
FS11 P1302104M
FS11EVP P1186001M
MODEL M/N
FS14EVP P4020004901
FS14EVP.000
FS14EVP.A
FS14EVP.B
FS14EVP.C
FS14EVP.D
FS14EVP.E
FS14EVP.F
FS16EVP P1185901M
FS17 P1302105M
FS17EVP P1185902M
FS20 P1302106M
FS20EVP P1185903M
FSP10 P4020004102
FSP10.A
FSP10.B
FSP10.C
FSP10.D
FSP10.E
FSP10SS P4020004103
FSP11 P1185802M
FSP11LW P1185805M
FSP11LW P1302103M
FSP11SS P1185803M
Models and Manufacturing Numbers
NOTE: For easier identification, the MODEL numbers are in alpha numerical order.
MODEL M/N
VEND10 P4020004101
VEND10.000
VEND10.A
VEND10.B
VEND10.C
VEND10.F
VEND10.G
VEND10.H
VEND10.J
VEND10.K
VEND10.L
VEND11 P1185801M
VEND11B P1185804M
VEND11 P1302101M

5 RE220002 Rev. 6
Important Information
Pride and workmanship go into every product to provide our customers with quality products. It is possible,
however, that during its lifetime a product may require service. Products should be serviced only by a qualified
service technician who is familiar with the safety procedures required in the repair and who is equipped with the
proper tools,parts,testinginstrumentsandtheappropriateservicemanual. REVIEWALLSERVICEINFORMATION
IN THE APPROPRIATE SERVICE MANUAL BEFORE BEGINNING REPAIRS.
Important Notices for Consumers and Servicers
!
WARNING
To avoid risk of serious injury or death, repairs should not be attempted by an unauthorized personal, dangerous
conditions (such as exposure to electrical shock) may result.
CAUTION
!
Amana will not be responsible for any injury or property damage from improper service procedures. If performing
service on your own product, assume responsibility for any personal injury or property damage which may result.
Tolocateanauthorizedservicer, please consult your telephone bookorthedealerfromwhom you purchased this
product. For further assistance, contact 1 [phone] first, if no answer contact the following number.
CONSUMER AFFAIRS DEPT. OR 1 [phone]
AMANA CALL
AMANA, IOWA 52204
If outside the United States contact:
AMANA
ATTN: CONSUMER AFFAIRS DEPT
2800 220th Trail
AMANA, IOWA 52204, USA
Telephone: [phone]
Facsimile: [phone]
TELEX: 4330076 AMANA
CABLE: "AMANA", AMANA, IOWA, USA
Recognize Safety Symbols, Words, and Labels
DANGER
!
DANGER—Immediate hazards which WILL result in severe personal injury or death.
WARNING
!
WARNING—Hazards or unsafe practices which COULD result in severe personal injury or death.
CAUTION
!
CAUTION—Hazards or unsafe practices which COULD result in minor personal injury or product or property
damage.

RE220002 Rev. 6 6
CAUTION
!
Do not become exposed to radiation from the
microwave generator or other parts conducting
microwaveenergy.
Basic design of this microwave oven makes it an
inherently safe device to both use and service. However,
there are some precautions which should be followed
when servicing microwave oven to maintain this safety.
These are as follows:
1. Always operate unit from an adequately grounded
outlet. Do not operate on a two-wire extension cord.
2. Before servicing unit (if unit is operable) perform
microwave leakage test.
3. Oven should never be operated if door does not fit
properly against seal, hinge/hinge bearings are
damaged or broken; choke is damaged, (pieces
missing, etc.); or any other visible damage can be
noted. Check choke area to ensure that this area is
clean and free of all foreign matter. If any above
problems occur take the following steps:
• Tell the user not to operate the oven.
• Contact Amana immediately.
4. If oven operates with door open and produces
microwave energy, take the following steps:
• Tell the user not to operate the oven.
• Contact Amana immediately.
5. Always have oven disconnected when outer case is
removed except when making "live" tests called for in
the service manual. Do not reach into equipment
area while unit is energized. Make all connections for
the test and check them for tightness before plugging
cord into outlet.
6. Always ground capacitors on magnetron filter box
and H.V. capacitor with an insulated-handle
screwdriver before working in high voltage area of
equipment compartment. Some types of failures will
leave a charge in capacitors and the discharge could
cause a reflex action which could make you injure
yourself.
7. In the area of the transformer, capacitor, diode, and
magnetron there is HIGH VOLTAGE. When unit is
operating, keep area clean and free of anything
which could possibly cause an arc or ground, etc.
8. DO NOT for any reason defeat interlock switches,
there is no valid reason for this action at any time; nor
Important Safety Information will it be condoned by Amana.
9. Microwave oven should never be operated with:
• Any components removed and/or bypassed
• Any of the safety interlocks are found to be defective
• Any of the seal surfaces are defective, missing, or
damaged
10.To ensure that unit does not emit excessive
microwave leakage and to meet Department of
Health and Human Services guidelines check oven
for microwave leakage using Narda Model 8100,
8200, Holaday HI1500, HI1501, or Simpson 380M
leakage monitor as outlined in instructions. Maximum
leakage level allowed is 4mw/cm2 .
11.If servicer encounters an emission reading over 4mw/
cm2, servicer is to cease repair and contact Amana
Service Department immediately for further direction.
Amana will contact the proper Government Agency
upon verification of test results.
12.Install or locate this equipment ONLY in accordance
with the installation instructions in this manual.
13.Some products such as whole eggs and sealed
containers – for example, closed glass jars – may
explode and SHOULD NOT be HEATED in this
equipment.
14.Use this equipment ONLY for its intended use as
described in this manual. Do not use corrosive
chemicals or vapors in this equipment. This type of
equipment is specifically designed to heat or cook. It
is not designed for industrial or laboratory use.
15.As with any equipment, CLOSE SUPERVISION is
necessary when used by CHILDREN.
16.DO NOT operate this equipment if it has a damaged
cord or plug, if it is not working properly, or if it has
been damaged or dropped.
17.This equipment, including power cord, must be
serviced ONLY by qualified service personnel.
Special tools are required to service equipment.
Contact nearest authorized service facility for
examination, repair, or adjustment.
18.DO NOT cover or block any openings on the
equipment.
19.DO NOT store this equipment outdoors. DO NOT
use this product near water – for example, near a
kitchen sink, in a wet basement, or near a swimming
pool, and the like.
20.DO NOT immerse cord or plug in water.
21.Keep cord AWAY from HEATED surfaces.
22.DO NOT let cord hang over edge of table or counter.

Important Product Grounding and Outlet Information
7 RE220002 Rev. 6
Typical grounding
type wall receptacle
Typical type wall receptacle
Typical power supply
cord with 3-prong
grounding plug
Typical power supply
cord with 3-prong
grounding plug
Temporary grounding adapter
(NOT used in Canada)
NOTE: 120 Volt, 15 A. Cord and Receptacle shown.
Typical instructions also apply to 120 V, 20 AMP, and
208/240 V cords and receptacles.
Proper grounding and polarization of 120 V wall outlets.
For the safety of our customers and the service
technician ALL appliances having a three (3) prong
power cord MUST be connected to a properly polarized
AND grounded wall outlet.
This information was written for those who do not
understand grounding and polarization of a wall outlet.
A 120 Volt wall outlet must always be wired as shown in
Figure 1.
Explanations
Polarization—This means that the larger slot must be
neutral and the small slot must be hot (live).
Mispolarized—The outlet is miswired so that the larger
slot is hot (live) and the smaller slot is neutral.
Grounded—This means the round hole connection is
connected to earth ground through a connection to the
main power panel.
Ungrounded—The round hole connection is not
complete to earth ground and/or the main power panel.
FIGURE 1

Important Product Grounding and Outlet Information
RE220002 Rev. 6 8
Test Procedures (2 Methods)
Method 1
Purchase and use a ground monitor (Figure 2, Page 8)
available under Amana Part Number R0193001 or it can
be purchased locally. The lamps inside the monitor
indicates a correctly or incorrectly wired outlet by
instructions imprinted on the monitor body.
Method 2
Voltmeter - (Use scale over 125 Volts A.C.)
Test A - "H" to "N" must indicate line voltage.
Test B - "H" to "G" must indicate line voltage.
Test C - "N" to "G" must indicate zero (0) volts.
If "N" to "G" indicates line voltage the outlet is
mispolarized.
If "H" to "G" indicates zero (0) volts the outlet is not
grounded.
FIGURE 2
WARNING
!
Wiring changes or grounding of wall outlet are to be
made only by a qualified electrician.
In the event a grounding adaptor (not used in Canada)
has been TEMPORARILY installed the test procedures
described in Methods 1 and 2 above should be used
(Figure 3).
FIGURE 3
NOTE: The green wire or tab should be connected to a
proper ground by a qualified electrician.
General Test Information
Most testing in the manual is conducted with an
ohmmeter using a multiplier scale of X10k (k-thousand
ohms). When using this scale, it is important that your
fingers do not touch the metal parts of the test probes.
To do so will give a false indicate of the ohm reading.

Specifications
9 RE220002 Rev. 6
Models A1200S A1225S FS10EVP
FSP10
FSP11
FS11
FS11EVP FS14EVP FS16EVP FS17 FS17EVP FS20 FS20EVP VEND10 VEND11
Power Source
Voltage AC 120 120 120 120 208/240 208/240 208/230 208/230 120 120
Amperage
(Single Unit) 20 20 20 20 20 20 20 20 20 20
Frequency 60 Hz 60 Hz 60 Hz 60 Hz 60 Hz 60 Hz 60 Hz 60 Hz 60 Hz 60 Hz
Single Phase
(3 Wire Earthed) Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
Power Output
Standard Test 1100 W 1100 W 1100 W 1100 W 1400 W 1500 W 1600 W 1900 W 1100 W 1100 W
IEC 705 Test 1200 W 1200 W 1200 W 1200 W 1500 W 1600 W 1700 W 2000 W 1200 W 1200 W
Operating Frequency 2450 MHz 2450 MHz 2450 MHz 2450 MHz 2450 MHz 2450 MHz 2450 MHz 2450 MHz 2450 MHz 2450 MHz
Power Consumption
Standby Condition 0000000000
Idle Condition 200 W 200 W 200 W 200 W 300 W 300 W 300 W 300 W 200 W 200 W
Cook Condition 2100 W 2100 W 2100 W 2100 W 2800 W 2800 W 2800 W 2800 W 2100 W 2100 W
Dimemsions
CabinetWidth 20.5”
52.1cm 20.5” 52.1cm 20.5” 52.1cm 20.5” 52.1cm 20.5” 52.1cm 20.5” 52.1cm 20.5” 52.1cm 20.5” 52.1cm 20.5” 52.1cm 20.5” 52.1cm
Height 14.9”
37.8cm 14.9” 37.8cm 14.9” 37.8cm 14.9” 37.8cm 14.9” 37.8cm 14.9” 37.8cm 14.9” 37.8cm 14.9” 37.8cm 14.9” 37.8cm 14.9” 37.8cm
Depth 21”
53.34cm 21” 53.34cm 21” 53.34cm 21” 53.34cm 21” 53.34cm 21” 53.34cm 21” 53.34cm 21” 53.34cm 21” 53.34cm 21” 53.34cm
Cooking Cabinet
Capacity .75 cu ft
.02 cu m .75 cu ft .02 cu m .75 cu ft .02 cu m .75 cu ft .02 cu m .75 cu ft .02 cu m .75 cu ft .02 cu m .75 cu ft .02 cu m .75 cu ft .02 cu m .75 cu ft .02 cu m .75 cu ft .02 cu m
Width 12.8”
32.5cm 12.8” 32.5cm 12.8” 32.5cm 12.8” 32.5cm 12.8” 32.5cm 12.8” 32.5cm 12.8” 32.5cm 12.8” 32.5cm 12.8” 32.5cm 12.8” 32.5cm
Height 7.8”
19.8cm 7.8” 19.8cm 7.8” 19.8cm 7.8” 19.8cm 7.8” 19.8cm 7.8” 19.8cm 7.8” 19.8cm 7.8” 19.8cm 7.8” 19.8cm 7.8” 19.8cm
Depth 13”
33cm 13” 33cm 13” 33cm 13” 33cm 13” 33cm 13” 33cm 13” 33cm 13” 33cm 13” 33cm 13” 33cm
Power Cord
NEMA 5-20R 5-20R 5-20R 5-20R 6-20R 6-20R 6-20R 6-20R 5-20R 5-20R
Adjust tap connector to either 208 or 230/240 volt source on the following models:
FS14EVP
FS16EVP
FS17
FS17EVP
FS20
FS20EVP

CAUTIONS and WARNINGS to be Observed During
Disassembly and Troubleshooting
RE220002 Rev. 6 10
When parts must be replaced, remove the power cord
from the outlet.
WARNING
!
When the fuse is blown due to the operation of the
monitor switch, replacement of complete interlock
switch must be performed.
1. This is mandatory. Refer to page 29 for the
necessary adjustments for this switch assembly.
2. When replacing the fuse, confirm that it has the
appropriate rating for these models.
CAUTION
!
Avoid inserting nails, wire, etc. through and holes in
the unit during operation.
Never insert a wire, nail, or any other metal object
through the lamp holes on the cavity or any other holes
or gaps because such object may work as an antenna
and cause microwave leakage.
Confirm After Repair
1. After repair or replacement of parts, make sure that
the screws of the oven, etc. are neither loose nor
missing.
2. Make sure that all electrical connections are tight
before inserting the plug into the wall outlet.
3. Check for microwave leakage. (Refer to procedure
for measuring microwave leakage.)
Unlike many other appliances, the microwave oven is
high-voltage, high-current equipment. Though it is free
from danger in ordinary use, extreme care should be
taken during repair.
CAUTION
!
Servicemen should remove their watches whenever
working close to or replacing the magnetron.
Checking the ground
Do not operate on a 2-wire extension cord. The
microwave oven is designed to be used when grounded,
it is imperative, therefore, to make sure it is grounded
properly before beginning repair work.
WARNING
!
After the oven is turned off, an electric charge may
remain in the high voltage capacitor. When replacing
or checking parts, remove the power plug from the
outlet and short the terminal of the high voltage
capacitor (terminal of lead wire from diode) to chassis
ground with an insulated handle screwdriver and
discharge.
DANGER
!
There is high voltage present, with high current
capabilities in the circuits of the high voltage winding
and filament winding of the high voltage transformer. It
is extremely dangerous to work on or near these
circuits with the oven energized. Do not measure the
voltage in the high voltage circuit including filament
voltage of the magnetron.
WARNING
!
Never touch any circuit with your hand nor with an
insulated tool during operation.

11 RE220002 Rev.6
General Information and Operating Instructions
Service Access
Componentservicing is doneby lowering the backpanel,
removingthecontrol panel assembly,and component
module panel. Refer to the disassembly section for
specificcomponents replacement and adjustment
procedures.
WARNING
!
Allcomponent mounting panelsmust be groundedto
theovenchassisbeforeperforming any
troubleshooting.
Serial Plate Location
Filter
Some models
Some models
Installation Instructions
1. Unpacktheovencarefully and examine itfor shipping
damage. Ifdamage is evident,notify thelocal carrier
immediately and file a damage claim. Menumaster
assumes no liability for damage incurred in transit.
2. Iftheoven has been stored in an extremely cold area,
waitseveralhoursbeforeplugging the oven into an
outlet.
3. Removeallmaterialfromtheoveninterior.
4. Place the oven in the chosen location. Make sure
there is at least one inch of clearance on the top and
side and the air intake (filter) is not close to a high
temperature source. Example: A deep fat fryer.
5. The FS14EVP, FS16EVP, FS17, FS17EVP, FS20,
FS20EVP oven must be adjusted to the proper supply
voltage. Thisovenis manufactured preset for 240
volts. If the supply voltage is less than 220 volts,
removethe small cover onthe back oftheoven and
movethevoltage adjusting connectortothe 208 volt
tap connector. Incorrect tap setting can cause
componentdamage.
6. Plug the FS10 EVP, FSP10, FSP11, FSP11SS and
VEND10oven intoa standard 120 volt outlet. Plugthe
FS14 EVP, FS16EVP, FS17, FS17EVP, FS20,
FS20EVP into a 208 or 240 volt outlet. Be sure the
electrical outlet is rated for at least 20 amperes and
themicrowave oven isthe only appliance onthe
circuit.
Important Electrical Grounding Instructions
Thisappliance must begrounded. In the eventof an
electrical short circuit, grounding reduces the risk of
electric shock by providing an escape wire for the electric
current. Thisappliance is equippedwith a cordhaving a
groundingwire with agrounding plug. The plug mustbe
plugged into an outlet that is properly installed and
grounded.
WARNING
!
Improper use of the grounding plug can result in a risk
of electric shock.
Consulta qualified electrician orserviceman if the
groundinginstructions are not completelyunderstood, or if
doubt exists as to whether the appliance is properly
grounded.
If it is necessary to use an extension cord, use only a
three-wireextensioncord that has a three-bladegrounding
plug, and a three-slot receptacle that will accept the plug
on the appliance. The marked rating of the extension
cord shall be equal to or greater than the electrical rating
oftheappliance.
7. Verify correctoperation by performingsystem
diagnosis test.

General Information and Operating Instructions
RE220002 Rev.6 12
Operation of FS10EVP, FS11EVP, FSP10,
FSP10SS, FSP11, FSP11SS, FS14EVP,
FS16EVP and VEND10.C, .F, .G, .H, .J, .K, .L,
VEND10, VEND11, A1200S, A1225S
Thesemodels can beoperated two ways:
A. Preprogrammed operation.
1. Openovendoor, placefoodon shelf and closedoor.
2. Push one of the buttons 1-0. The display will
indicate the number of the button in use, the
percentageofpower, and the totalprogrammed
time. The time will count down in the display.
NOTE: If"two stage cooking" has beenpreprogrammed,
it is normal for the % power indicator light to shift
fromdefrost to anotherpower level during the
heating cycle.
3. When the time expires, an audible tone will sound.
Openovendoorand remove food. If no buttonsare
pushed after the last heating cycle, the oven will
shut down in 60 seconds.
If the door is not completely latched and a button is
pushed, an audible tone will sound, the colon may flash,
but no number will appear in the display.
Tochangeprogrammed items or powerlevels,see
programminginstructions.
If a button is programmed for zero time, on early models
nothing will happen when that button is pushed. On
newermodels an audibletone may soundbut no numbers
will appear in the display.
B. Change time operation.
NOTE: On early models, this feature may be deactivated
as part of the programming instructions.
1. Openovendoor,place food onshelfand close door.
2. Push the change time button.
3. Use button 1 to 0 to enter the desire time.
Example: Time desired is 2:40. Push button 2,
then, 4, then, 0. The display will show 2:40.
4. Pushthedesired power levelbutton. Theheating
cycle will begin, the oven will count down to zero
andan audible tonewill sound.
Use of the "change time" feature will not disturb the times
orpowerlevels preset onbutton1-0.
Operation of VEND10.A, .B
1. Openovendoor,place food onshelfand close door.
2. Push one of button 1-7. The display will indicate the
number of the button in use, "cook" or "defrost", and
the total programmed time. The time will count down
in the display.
NOTE: If"two stage cooking"has beenpreprogrammed,
it is normal for the % power indicator light to shift
from defrost to cook during the heating cycle.
3. When the time expires, an audible tone will sound.
Openovendoorand remove food. If no buttonsare
pushed after the last heating cycle, the oven will shut
down in 60 seconds.
If the door is not completely latched and a button is
pushed, an audible tone will sound, the colon may flash,
but no number will appear in the display.
To change programmedtimesor power levels, see
programminginstructions.
If a button is programmed for zero time, on early models
nothing will happen when that button is pushed. On
newermodels an audibletone may soundbut no number
will appear in the display.
Preventive Maintenance
NOTE: Do not use scouring pads, powders or other
abrasivematerials on anyof theoven surfaces.
Regularly
1. Wipe up all spillage as it occurs.
2. Do not allow food particles or grease to collect on the
plasticstirrer cover andlight cover oron the innerdoor
andoven cavity front surfaces. Abuild-up of foodor
grease in these areas can result in damage to the
surfaces as well as in loss of cooking power.
Daily
1. Wipetheplasticstirrer cover andoven light coverwith
acloth or sponge dampened ina mild detergent
solution.
2. Wipe all surfaces in the oven cavity with the
dampened cloth or sponge and then dry with a clean
cloth.
3. Wipetheinnerdoorsurface and ovencavityfront with
amild detergent solution,making sureto remove all
food particles.
Weekly
1. Remove the air intake filter and wash it in hot water to
remove grease and dust that collects and obstructs
theairflow.
2. Check the door assembly for hinge and latch
tightness.
Semi-Annually
1. Performradio frequency (r.f.)leakage test. Test
anytime r.f. leakage is suspected or maintenance is
performed on door assembly, interlock system, or
magnetron.
2. Verify correctoperation by performing System
Diagnosis.
Servicer Perspective
Allreferences to components areas viewed fromtherear
oftheoven.

13 RE220002 Rev. 6
High voltages are present during the cook cycle.
Extreme caution should be observed at all times.
Before touching any oven components or wiring, always unplug the oven from its power source and discharge the
capacitor by shorting across the capacitor terminals with an insulated handle screwdriver.
DANGER
!
Test Procedures
High Voltage Component Test Chart
COMPONENT TEST SET-UP NORMAL READING (Approximate)
CAPACITOR DISCHARGE THE CAPACITOR BETWEEN TERMINALS: Analo
g
meter
Remove wires from capacitor terminals
and connect ohmmeter, set on hi
g
hest
resistance scale to terminals.
should momentarily deflect toward zero
then return a resistance
g
reater than 5 me
g
ohms. If no deflection occurs, or if
continuous deflection occurs, replace
capacitor.
Also check between each terminal and
the capacitor case. TERMINAL TO CASE: Infinite resistance.
DIODE DISCHARGE THE CAPACITOR Isolate the
diode by disconnectin
g
the wirin
g
. On
type I diodes remove both wires. On type II
diodes disconnect one wire to diode.
Infinite resistance should be measured in
one direction and 50,000 to 200,000 ohms
in the opposite direction:
TYPE I It is not necessary to remove the mountin
g
screw.
Connect ohmmeter, set on hi
g
hest
resistance scale, to diode terminals.
NOTE: Ohmmeter must be an analo
g
meter
and contain a battery of 6 volts minimum.
TYPE II
Reverse meter leads for second testin
g
.
On type I diodes, test from each terminal
to
g
round.
EACH TERMINAL TO GROUND:
(Type I only) Infinite resistance.
MAGNETRON DISCHARGE THE CAPACITOR BETWEEN TERMINALS :
Less than 1 ohm.
Remove wires from ma
g
netron and
connect ohmmeter to its terminals. EACH TERMINAL TO GROUND: Infinite resistance.
Also check between each terminal
and
g
round. NOTE: This test is not conclusive. If the oven does not heat and all other
components test
g
ood replace the
ma
g
netron and retest.
POWER TRANSFORMER DISCHARGE THE CAPACITOR
To check primary windin
g
, remove wires
from terminals (marked 1 & 2 FS-10 EVP,
VEND-10, or COM & 208 OR 240
FS-14 EVP). Connect ohmmeter between
primary terminals.
PRIMARY: Less than 1 ohm
Check from each primary terminal to
g
round. EACH TERMINAL TO GROUND:
Infinite resistance
Also check hi
g
h volta
g
e windin
g
, remove
wire from either secondary terminal marked
HI or LO terminal and oven chassis
g
round.
HI TO GROUND:
40 to 80 ohms DEPENDING ON
LO TO GROUND: TRANSFORMER
40 to 80 ohms MANUFACTOR
To check filament windin
g
s, remove
filament leads 3 & 4 and measure
resistance across leads.
Also check between each terminal
and
g
round.
FILAMENT:
Less than 1 ohm
FILAMENT TO GROUND:
Infinite resistance.

RE220002 Rev. 6 14
Test Procedures High voltages are present during the cook cycle.
Extreme caution should be observed at all times.
Before touching any oven components or wiring, always unplug the oven from its power source and discharge the
capacitor by shorting across the capacitor terminals with an insulated handle screwdriver.
DANGER
!
First Isolation Test (FS14, FS16)
Power output of approximately 700 watts indicates one
high voltage section is functioning normally and one
high voltage section is defective. The following
procedures will isolate the defective high voltage
section.
1. Disconnect and isolate the common wire from the
primary of the left power transformer,
2. Perform power output check.
A. If the output power is normal (550 - 750 watts),
go on to step 3.
B. If low or no power is indicated, the problem is in
the right high voltage section. Perform high
voltage component tests on components of right
high voltage section.
3. Reconnect wire to left transformer.
4. Disconnect and isolate the common wire from the
primary of the right power transformer.
5. Perform power output check.
If low or no power is indicated, the problem is in the
left high voltage section. Perform high voltage
component tests on components of left high voltage
section.
Second Isolation Test
Perform the isolation test when little or no heat is
produced by the oven, but all other operations appear
normal. This test isolates the problem to either the high
voltage section or the line voltage section of the oven.
1. Connect a meter capable of measuring 250volts AC
across the primary of one power transformer.
2. Put the oven into a cook cycle and observe the
voltage reading. Measure the voltage across the
primary of the second power transformer.
Procedure A: If the primary voltages are normal,
(1line voltage AC) proceed to the high voltage tests in
this section.
Procedure B: If low or no voltage is indicated, the
problem is in the line voltage portion of the oven.
Interlock switch module tests
The interlock switch module is activated by the door and
door latch assembly. All interlock, monitor and door
sensing functions are performed by this module.
1. Unplug the oven power cord, remove the control panel
assembly, and remove the interlock switch module.
2. Disconnect wire leads from the terminals to be tested
and reinstall the interlock switch module.
3. With an ohmmeter, check continuity between terminals
using the test chart below.
4. If improper indications are given, check the door and
latch for proper activation of switches. If door
activation checks OK, replace Interlock Switch
Module.
X Indicates
Contacts
Cl d
Primary
Interlock Secondary Interlock Interlock Monitor Door Logic (Sense)
Terminals 8 - 3 6 - 7 1 - 6 4 - 5
Function
Door Open X
Door Closed X X X
WARNING
!
For continued protection against radiation hazard,
replace only with manufactures parts catalog numbered
switch.
Interlock Switch Module

15 RE220002 Rev. 6
High voltages are present during the cook cycle.
Extreme caution should be observed at all times.
Before touching any oven components or wiring, always unplug the oven from its power source and discharge the
capacitor by shorting across the capacitor terminals with an insulated handle screwdriver.
DANGER
!
Test Procedures
1. Unplug the oven power cord and remove the control
panel.
2. Disconnect ribbon cable from circuit board by
applying even pressure to both sides of ribbon cable
and pull outward from ribbon cable connector.
3. Touch ohmmeter test leads to ribbon cable test
points indicated on appropriate test chart.
Resistance should be more than 1 Meg ohms
between ribbon cable test points until a touch panel
pad is depressed. With a touch panel pad
depressed, the resistance between connecting test
points should be less than 100 ohms.
4. If improper indications are given, replace defective
touch panel assembly.
5. Inspect ribbon cable silver circuit; if any silver circuit
is missing from the connector end of the ribbon
cable, evenly trim 1/16" off end of ribbon cable as
shown to assure good electrical connection with
circuit board connector.
6. Apply even pressure to both sides of ribbon cable
while inserting cable into ribbon cable connector.
Touch Panel Test
The touch panel operation can be tested with an
ohmmeter on the R x 1 scale.
CAUTION
!
Over-flexing the ribbon cable will damage the silver
circuit. Pointed test leads cannot be used on ribbon
cable silver circuit or silver circuit will be damaged.
Scratching of the ribbon cable will damage the silver
circuit. Static discharge can damage the controller.
Avoid touching any part of the circuitry on the back of
the controller. Do not bend ribbon cable forward.
* These Buttons are not present on VEND-10. VEND10.C has all the
buttonsshownexcept80%,50%,and30%withthe100%buttonused
as the START button.

RE220002 Rev. 6 16
Test Procedures High voltages are present during the cook cycle.
Extreme caution should be observed at all times.
Before touching any oven components or wiring, always unplug the oven from its power source and discharge the
capacitor by shorting across the capacitor terminals with an insulated handle screwdriver.
DANGER
!
Low Voltage (Controller) Transformer Test
An operational test can be performed to verify proper
operation of the low voltage transformer.
1. Disconnect power to the oven and remove the
control panel assembly.
2. With a voltmeter set to appropriate VAC scale,
perform the following test set-ups, measure and
record the voltage indicated on the meter.
WARNING
!
Do not touch any oven components or wiring during
ovenoperation.
TEST SET-UPS TEST POINTS NORMAL VOLTAGE (Approximate)
Attach meter leads to wire harness
test points A - B, apply power to
oven and open oven door. A & B
120 VAC on all models except
FS14.EVP.00, FS14EVP.A,
and FS14EVP.B which
is 208 - 230 VAC.
Disconnect power and remove L.V.
transformer connector attached to
the control circuit board and attach
meter leads into harness side of
connector at test points shown in
chart. Apply power to oven and
open oven door.
2 (Blue) - 4 (Brown
1 (Black) - 6 (Orange)
5 (Yellow) - 6 (Orange) 2.6 VAC 23 VAC 46 VAC
FS14EVP,
FS16EVP
A1200S, A1225S, FSP10,
FSP-11, VEND10, VEND11
Procedure A: If the proper AC voltages were measured
as shown on the test chart, the low voltage transformer
operation is normal.
Procedure B: If abnormal reading was measured at test
points 2-4, 1-6, 5-6, as indicated on the test chart but
normal voltage was measured at test points A-B, replace
low voltage transformer. If no voltage was measured at
test points A-B, check wire connections and circuit
diagnosis for other possible causes.

17 RE220002 Rev. 6
High voltages are present during the cook cycle.
Extreme caution should be observed at all times.
Before touching any oven components or wiring, always unplug the oven from its power source and discharge the
capacitor by shorting across the capacitor terminals with an insulated handle screwdriver.
DANGER
!
Test Procedures
Drive and Holding Relay Test
Drive relay is on .000 and .A models only
1. Disconnect power to oven, and remove but do not
disconnect the control panel assembly. Lower the
back panel to the service position.
2. Perform test set-ups as indicated on the Test Chart
below.
NOTE: Test "Drive" or "Holding" relays one at a time.
Do not disconnect both relays at the same
time.
NOTE: If necessary, remove the component module
panel assembly to connect test leads. Replace
the module assembly prior to performing all
tests except the first two resistance checks.
TEST SET-UP TEST POINTS NORMAL READINGS
(Approximate) CORRECTIVE ACTION
1.
2.
Disconnect power.
Remove harness leads from
relay terminals 1 & 6
1 to 6 250 to 350 ohm Replace the relay and retest
1.
2.
Reconnect harness leads to
terminals 1 & 6.
Remove harness leads from
terminals 2 & 3, and insulate
to prevent electrical short.
2 to 3 Infinite ohms Replace relay and retest
1.
2.
Reconnect power.
Program oven for 15 seconds
and put oven into a COOK
cycle.
1 to 6 22 Volts DC Replace the controller and
retest
1. DRIVE RELAY
Program oven for 15 seconds
and put oven into a COOK
cycle.
2 to 3 Less than 1 ohm
during cook and for 60
seconds after cook
cycle, then infinite
ohms.
Replace the relay and retest.
1. HOLDING RELAY
Plug in oven 2 to 3 Less than 1 ohm for
60 seconds, then
inifinte ohms. Replace the relay and retest
Drive/HoldingRelay

RE220002 Rev. 6 18
Test Procedures High voltages are present during the cook cycle.
Extreme caution should be observed at all times.
Before touching any oven components or wiring, always unplug the oven from its power source and discharge the
capacitor by shorting across the capacitor terminals with an insulated handle screwdriver.
DANGER
!
Holding Relay Test Models
VEND-10 .F, .G, .H, .J, VEND-10, and VEND-11
1. Disconnect power to oven, and remove but do not
disconnect the control panel assembly. Lower the
back panel to the service position.
2. Perform test set-ups as indicated on the Test Chart
below.
NOTE: If necessary, remove the component module
panel assembly to connect test leads. Replace
the module assembly prior to performing all tests
except the first two resistance checks.
TEST SET-UP TERMINAL
TEST
POINT
NORMAL
READING CORRECTIVE ACTION
Disconnect power.
Remove harness
leads from relay
terminals 5 & 6.
5 to 6 250 to 350
ohms Replace the relay and
retest.
Reconnect harness
leads to terminals 5
& 6. Remove
harness leads from
terminals 1 &3, and
insulate to prevent
electrical short.
1 to 3 Infinite
ohms Replace relay and retest.
Reconnect power.
Program oven for
15 seconds and put
oven into a COOK
cycle.
5 to 6 22 Volts
DC Replace the controller and
retest
HoldingRelay
Triac Module Test
1. Unplug the oven power cord, lower the back panel
and discharge the capacitor(s). On FS14, remove
the left magnetron inlet duct.
2. COMPLETELY REMOVE THE HIGH VOLTAGE
LEAD that connects the capacitor to the transformer
high voltage terminal (marked "HI" or "LO"). On the
FS14EVP also remove the lead between the second
capacitor and high voltage transformer terminal
(marked "HI" or "LO").
WARNING
!
High voltages are present at the high voltage
secondary terminals during a cook cycle.
3. With a voltmeter capable of measuring 250 VAC,
attach the meter leads to triac terminal MT1 (WHT)
and MT2 (RED). NOTE: Triac harness leads
remain connected.
WARNING
!
Do not touch any oven components or wiring during
oven operation. Attach meter leads with alligator
clips when making operational tests.
4. Perform the following test; measure and record the
voltage indicated on the meter.
Test Set Up
Set the VEND10 oven to operate on defrost for
one minute. Set the FS10 or FS14 oven to
operate at 50% power level for one minute.
Normal Output Voltage
On VEND10 and FS10 ovens voltage alternates
from 120 VAC to less than 5 VAC. On FS14
ovens alternates from 208/240 volts to less than
5 VAC. FS10 and FS14 alternates approximately
every 6 seconds, VEND10 alternation will vary.
Corrective Action — If abnormal output voltage is
measured.
If controller tests check okay, replace the triac
module and retest.
MT2
MT1 GATE
Triac
This triac is used in
models with P130210_M
series
Disconnect wires to triac.
Measure resistance from:
MT1 to MT2
MT1 to Gate
MT2 to Gate
All terminals to ground
Caution - Do not operate oven with
wire to terminal MT2 removed.
Infinite
Approximately 40 Ωor more
Infinite
Infinite

19 RE220002 Rev. 6
High voltages are present during the cook cycle.
Extreme caution should be observed at all times.
Before touching any oven components or wiring, always unplug the oven from its power source and discharge the
capacitor by shorting across the capacitor terminals with an insulated handle screwdriver.
DANGER
!
Test Procedures
Controller Triac Drive Test
NOTE: This test is provided for reference only. The
controller self diagnosis test is normally all that
is required to verify normal controller operation.
1. Unplug the oven power cord, lower the back panel
and discharge the capacitor(s) . On some models,
remove the left magnetron inlet duct.
2. Connect voltmeter to triac module terminals marked
GRN and BLU.
3. Apply power to the oven and put the oven into a
cook cycle on full (100%) power setting. The meter
should indicate 1 to 6 volts AC during the cook cycle
and zero volts after completion of the cook cycle.
Ifabnormalreadingsweremeasured,replacethecontrol-
ler and retest.
Cook Relay Test
Models VEND -10.000, .A, .B, .C
1. Unplug the oven power cord and remove the control
panel assembly.
2. Disconnect wiring from cook relay terminals.
3. Connect ohmmeter across cook relay terminals A
and B.
4. Meter should indicate approximately 900 ohms.
Procedure A: If meter indicates approximately 900
ohms, go on to Step 5.
Procedure B: If improper indications are given,
replace the cook relay and retest.
5. Connect ohmmeter across relay terminals 11 and
12 as shown below.
6. Press and hold test button on cook relay.
Meter should indicate continuity, (0 ohms). If not,
the cook relay is defective.
7. Release test button.
Meter should indicate infinity. If not, the cook relay is
defective.
8. Connect ohmmeter across relay terminals 13 and 14.
9. Repeat steps 6 and 7.
Cook Relay
Stirrer Motor Test
1. Unplug the oven power cord, lower the back panel,
and discharge the capacitor(s). On some models,
remove the left magnetron inlet duct.
2. Connect a meter capable of measuring 120 volts AC
across the input leads to the stirrer motor.
3. Apply power to oven and open oven door.
Meter should indicate approximately 120 volts AC.
Procedure A: If meter indicates 120 volts AC but motor
does not operate, replace the motor. (Check the stirrer
blade to be sure it is not binding on stirrer cover.)
Procedure B: If meter indicates zero volts, check oven
wiring continuity and system diagnosis.
Blower Motor Test
1. Unplug the oven power cord, lower the back panel,
discharge the capacitor(s).
2. Check the blower wheel to be sure it is not binding or
frozen.
3. Connect a ohmmeter capable of measuring 120 volts
AC across the input leads to the blower motor.
4. Apply power to oven and open oven door.
Meter should indicate approximately 120 volts AC.
Procedure A: If meter indicates 120 volts AC but motor
does not operate, replace the motor.
Procedure B: If meter indicates zero volts, check oven
wiring continuity and system diagnosis.

RE220002 Rev. 6 20
Test Procedures High voltages are present during the cook cycle.
Extreme caution should be observed at all times.
Before touching any oven components or wiring, always unplug the oven from its power source and discharge the
capacitor by shorting across the capacitor terminals with an insulated handle screwdriver.
DANGER
!
Auto Transformer Test
FS-14EVP and FS-16EVP only
1. Unplug oven power cord and remove but do not
disconnect the control panel assembly.
2. With alligator clips, connect a meter capable of
measuring 250 volts AC across the 0 volt and 240 volt
terminals of the auto transformer.
3. Apply power to the oven and open the oven door. A
normal indication should be 220 to 256 volts AC.
Unplug the oven. If voltages are low or high, check
that the voltage adjusting connector is set for the
proper source voltage.
4. Connector meter across the 0 volt and 120 volt
terminals.
5. Apply power to the oven, open the oven door and note
the voltage.
6. Disconnect power to the oven. Connect meter across
the 120 volt and 240 volt terminals.
7. Apply power to the oven, open the oven door, note the
voltage and unplug the oven.
Voltages in steps 5 (terminals 0 and 120 volts) and 7
(terminals 120 and 240 volts) should be within 15 volts of
the same and should be approximately half of the input
voltage measured in step 3. If the voltages in steps 5 and
7 differ by more than 15 volts or are not approximately half
the voltage measured in step 3, replace the auto
transformer and retest.
Thermal Protector Test
Unless an overheating condition exists, a continuity
check across the thermal protector contacts should
indicate a closed circuit (< 1 ohm).
1. Magnetron thermal protector
A. Early production units contained resettable
magnetron thermal protectors.
B. Units produced with the following revision levels
do not reset:
FS10EVP.D
FS14EVP.D
FSP10.C
VEND10.F
2. Cavity thermal protectors will not reset.
D
E
F
C
G
A
BK1 Pin 1
K2
Pin 1
DISPLAY
Ribbon
conector
Connector
New Controller
208–230 VAC units
FS20 P1302106M
FS 17 P1302105M
120 VAC units
FS11 P1302104M
FSP11 P1302102M
FSP11LW P1302103M
VEND11 P1302101M
Pin Description
A—Line voltage to auto transformer
B—Line voltage to K1 connector
C—Line out from controller to high voltage transformers
D—To triac MT1 pin
E—To triac MT2 pin
F—Gate voltage (.8 VAC) to triac
G—Line in to controller relay contact to H.V.
transformer
K1 Connector
Pin 1 to Pin 3—Line voltage to controller
Pin 6 and Pin 7—Voltage to logic switch
Pin 9—Ground