Frigidaire FMV145 Wiring Diagram

FMV145 2/6/01 3:11 PM Page 1
MICROWAVE OVEN HOODS To Service Turntable Motor
1. Disconnect power and remove bottom plate
WARNING
NEVER TOUCH OR SERVICE THE
2. Remove bottom plate and disconnect the
HIGH VOLTAGE CIRCUIT WITHOUT
DISCHARGING CAPACITOR BY
3. Remove turntable motor screws(2) and pull
SHORTING ACROSS ITS TERMINALS.
TO AVOID POSSIBLE ELECTRICAL
SHOCK.
OVEN THERMAL CUTOUT
(FLAME SENSOR)
The Oven Thermal Cutout is located on the top
side of the Oven Cavity beside Exhaust duct
with a temperature rating of 248°F.(120°C.) The
cutout is tightly held to the top of the oven cavity
by a spring clip.
NOTE :
If cutout cannot be removed from clip
oven will have to be removed from
installation and outer case removed.
ANTENNA
The antenna is motor driven and located on the
upper side of the cavity. The oven uses a top
KEY PANEL TEST
feed wave guide. The antenna blade is located in
the wave guide and the motor is located on the
If necessary the key panel pads can be verified
wave guide.
by a continuity test. For ease of handling the key
panel should be removed and placed on a flat
To Service Antenna Blade
surface.
1. Disconnect power and open the door.
RIBBON
2. Remove the clip and turn the antenna cover
PAD
left.
ADD 30SEC
3. Remove antenna cover and the antenna will
come with it. BEVERAGE
POWER LEVEL
DEFROST
AM/PM
SURFACE LIGHT
CLOCK
TURNTABLE
REMINDER
TIMER COOK
DELAY START
REHEAT
POPCORN
HELP
To Service Antenna Motor
1. Disconnect power and remove grille screws(2).
2. Remove grille and the bracket duct upper
screws(1).
3. Remove the bracket duct upper and disconnect
the antenna motor wire.
4. Remove antenna motor screws(2) and pull the
antenna motor .
316137215 TECHNICAL DATA SHEET
•
SMART BOARD
SMART BOARD is used to serve as an electrical
screws(3). interface between the control and the oven.
SMART BOARD is located on the back of the
turntable motor wire. control panel assembly.
The SMART BOARD contains the power relay,
the turntable motor out. LVT, vent blower and surface light relays, and
other components to perform the proper
switching cir-cuits. Several disconnect plugs are
also located on the SMART BOARD:
• CON 1 - 16 Pin Ribbon Connector
CON 2 - 07 Pin Vent Blower Connector
•
CON 3 - 06 Pin Primary L.V.T & Main Relay
•
CON 4 - Door Sensing
•
Many diagnostic circuit tests can be made at the
disconnect plugs. (Refer to diagnosis flow chart
and simplified schematic in mini-manuals.)
VARISTOR REPLACEMENT
1. Clip old varistor wires at Green varistor body
(leaving two short leads).
2. Replacement varistor has push-on terminals
connected.(WB27x5230)
3. Plug new varistor on the cut leads. Check for
tightness.
CONTROL PERFORMANCE TEST
Set Clock-Touch clock pad, enter time of day,
•
AM/PM touch start pad.
Alternately touch each function pad and enter
•
time or temperature, selection for the function
CONN. PAD CONN.
- also change power levels.
4-11 CLEAR 3-12
Touch Clear-Off after each function test to
•
6-11 VENT FAN 8-12
clear that funtion.
3-14 TIMER 4-13
• Repeat procedure for each function to
4-15 START 3-11
exercise each pad.
9-13 1 9-16
Control and display should respond to each
•
7-12 2 8-16
entry.
7-13 3 7-16
Display should revert to Time-Of-Day after
•
5-12 4 6-16
each Clear-Off.
5-13 5 5-16
Refer results to Diagnosis Flow Chart.
5-15 6 4-16
6-13 7 9-15
CAPACITOR AND DIODE
9-14 8 8-15
The high voltage capacitor and diode can be
5-11 9 7-15
serviced through Control Panel after removing
4-12 0 6-15
grille.
MAGNETRON, MAGNETRON FAN,
VENT
TRANSFORMER
Oven must be removed from wall.
1~9
9
10
10~16
16
REMOVING OVEN FROM WALL
(2 PEOPLE REQUIRED)
Oven is hooked on metal tabs at bottom of wall
mounting plate and fastened to cabinet by (3)
top cabinet bolts.
•
CAUTION :
Oven weights 62 lbs. Requires 2
people for removal.
1. Disconnect Power Cord, Top vented models -
disconnect duct and remove damper assembly.
2. Remove (3) top cabinet bolts.
3. Pull unit forward slowly providing adequate
support to prevent dropping unit during
removal of last top cabinet bolt.
OPEN DOOR
IS OVEN LIGHT "ON" ?
Y
• CLOSE DOOR
• RUN CONTROL PERFORM-
ANCE TEST (SEE TEST)
• DOES IT PASS?
Y
LARGE WATER LOAD
& NEON IN OVEN
Y
• PROGRAM TIME COOK 30 MIN
• DOES OVEN START
WITHOUT TOUCHED "START"?
• ONLY LIGHT LIGHT FAN
& &
FAN ON MW PWR "ON"
• NO MW PWR
REPL • SMART BOARD
SMART BOARD OR
KEY PANEL
BLOWER AND POWER
TOUCH "OFF" PADS
TURN "OFF"?
Y
NORMAL
VENT FAN OR LIGHT
"ON" ONLY WHEN PAD
TOUCHED
REPLACE
SMART BOARD
Y N
DISPLAY LIT
N
CHECK
• LIGHT
• DOOR S/W AND MAIN RELAY
• WIRING
• CANNOT SET CLOCK
CHECK
• NO OR ONLY SOME PADS WORK
• 120V SUPPLY
• DISPLAY NOT WHATA ENTERED
• 20A FUSE
N
• ERRATIC DISPLAY
• (IF BLOWN CHECK VARISTOR)
• NO BEEP • MAGN TCO & OVEN CUTOUT.
• CONTROL XFMR VOLTS
• DISPLAY GOES BLANK, FF, RESET
ALL OK?
• CANNOT CLEAR DISPLAY
• TOUCH START
• XFMR PLUGS
• VERIFY XFMR VOLTS
OPEN LIGHT &
OK?
N N
BLOWER "ON" • SMART BOARD
AND STAYS"ON"? Y N
Y
• SMART BOARD REPL
N
MW PWR "ON"?
OR XFMR
(NEON LIGHT)
• KEY PANEL
Y
N
• CHANGE TO PWR 5
• NEON CYCLE?
PERFORM KEY PANEL TEST
Y
• CLEAR OFF &
PROGRAM 30 SEC
START & TIME OUT
• DOES IT TURN "OFF"?
• WITH OVEN RUNNING
N CHECK NEON CYCLE
CHECK POWER NO OVEN LIGHT
N
CONTROL REPLAY &
TURNED ON NO BLOWER
REPLACE
SMART
BOARD
WITH START PAD TOUCHED
SMART BOARD OR
CHECK LIGHT/BLOWER
HV SECT
5-12 VDC PLUG
OVEN LIGHT &
Y
BLOWER STILL ON
CHK WINDINGS
AT PLUG
• OPEN & CLOSE DOOR
• LIGHT & BLOWER
STILL ON
SMART
BOARD
TOUCH FAN & LIGHT PADS
Y VENT FAN & LIGHT "ON"
AND STAYS "ON"?
N
N
KEY PANEL ONLY FAN
NO FAN
OR OR &
SMART BOARD LIGHT WORKS
NO LIGHT
CHEK
• 120V SUPPLY
CHECK SMART BOARD 16PIN PLUG
• IF 20A FUSE BLOWN, CHECK
• VENT FAN AT 8-12
VARISTOR.
• SURFACE LIGHT AT 7-12
• MAGN TCO ALL OK?
Y
Y N • XFMR
• PLUGS OR
• SMART
• PLUGS • SMART BOARD
• WIRING OR BOARD
• LAMPS • KEY PANEL
• FAN OR
• SMART
BOARD
Y N
REPAIR
OR
CAUTION
OBSERVE
PRECAUTIONS
FOR HANDLING
ELECTROSTATIC
SENSITIVE
DEVICES
LIGHT & BLOWER ON
ONLY WHEN START
PAD TOUCHED
REPLACE
SMART
BOARD
N
INTERLOCKS
DOOR SWITCH
CONTROL XFMR
KEY PANEL
OR
SMMART BOARD
N
REPAIR