Component Testing Procedures - Maytag MGR6775ADB Service Manual

Testing Procedures
To avoid risk of electrical shock, personal injury or death; disconnect power and gas to oven before servicing,
unless testing requires power and/or gas.
Component Testing
Illustration
Oven light housing
Door plunger switch
Autolatch assembly
with switch
5 K btu
270° valve
9.2 K btu
16 K btu
12 K btu (Model
MGR6875AD*)
Spark 270° switch
Spark ignition
electrode
5 K btu Top surface burner
9.2 K btu
16 K btu
12 K btu (Model
MGR6875AD*)
Spark module 4 + 0
L
A B
N B1
A1
Temperature sensor
Bake burner
Broil burner
Ignitor
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Component
Disconnect connector and test
resistance of terminals .........................
Measure voltage at oven light: .............
Remove switch from unit and measure
the following points:
C NO ................................................
Disconnect wires and test for
continuity per wiring diagram.
Refer to Parts Manual for correct
autolatch switch associated with the
correct manufacturing number.
Verify gas is supplied.
Adjust set screw for simmer control.
Test for voltage at terminals.................
Disconnect wiring and check for
continuity in LITE position ....................
Test for resistance of spark lead..........
Test ignitor to chassis ..........................
Verify gas is supplied ...........................
Verify burner cap is positioned
correctly.
Test for voltage at terminals L and N ...
Check polarity and ground ...................
Measure resistances............................
Verify gas is supplied.
Orifice adjusted for Natural or LP.........
Check for obstructions or
contamination in ports..........................
Verify gas is supplied.
Orifice adjusted for Natural or LP.........
Check for obstructions or
contamination in ports..........................
Test for voltage at terminals.................
Test for the amount of amperage in the
circuit ...................................................
(Ignitor may glow but not have
sufficient amperage to open valve).
WARNING
Test Procedure
16023415
Results
Verify bulb is properly installed.
Indicates continuity with bulb installed.
120 VAC, refer to wiring diagram for
terminal identification. If no voltage is
present at light, check wiring/switches.
Plunger in continuity, Plunger out infinite.
See wiring diagram for schematic layout.
Access assembly by removing left side
panel.
120 VAC
Continuity in LITE position.
Continuity
No continuity from ignitor to chassis.
Check for obstructions in burner ports.
120 VAC
See wiring diagram
Approximately 1100 Ω at room
temperature 75°F.
Set for Natural Gas from the factory
Adjust as necessary.
Replace if punctured or torn.
Set for Natural Gas from the factory
Adjust as necessary.
Replace if punctured or torn.
120 VAC
3.2 − 3.6 Amps If not replace.
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